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Linus Torvalds [Thu, 10 Mar 2016 18:36:07 +0000 (10:36 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
"Three bug fixes:
- The fix for the page table corruption (CVE-2016-2143)
- The diagnose statistics introduced a regression for the dasd diag
driver
- Boot crash on systems without the set-program-parameters facility"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/mm: four page table levels vs. fork
s390/cpumf: Fix lpp detection
s390/dasd: fix diag 0x250 inline assembly
Martin Schwidefsky [Mon, 15 Feb 2016 13:46:49 +0000 (14:46 +0100)]
s390/mm: four page table levels vs. fork
The fork of a process with four page table levels is broken since
git commit
6252d702c5311ce9 "[S390] dynamic page tables."
All new mm contexts are created with three page table levels and
an asce limit of 4TB. If the parent has four levels dup_mmap will
add vmas to the new context which are outside of the asce limit.
The subsequent call to copy_page_range will walk the three level
page table structure of the new process with non-zero pgd and pud
indexes. This leads to memory clobbers as the pgd_index *and* the
pud_index is added to the mm->pgd pointer without a pgd_deref
in between.
The init_new_context() function is selecting the number of page
table levels for a new context. The function is used by mm_init()
which in turn is called by dup_mm() and mm_alloc(). These two are
used by fork() and exec(). The init_new_context() function can
distinguish the two cases by looking at mm->context.asce_limit,
for fork() the mm struct has been copied and the number of page
table levels may not change. For exec() the mm_alloc() function
set the new mm structure to zero, in this case a three-level page
table is created as the temporary stack space is located at
STACK_TOP_MAX = 4TB.
This fixes CVE-2016-2143.
Reported-by: Marcin Kościelnicki <koriakin@0x04.net>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Linus Torvalds [Thu, 10 Mar 2016 04:24:23 +0000 (20:24 -0800)]
Merge tag 'spi-fix-v4.5-rc7' of git://git./linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A few driver specific fixes for the Rockchip and i.MX SPI controllers,
especially for the i.MX they're annoying bugs if you run into them"
* tag 'spi-fix-v4.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: imx: fix spi resource leak with dma transfer
spi: imx: allow only WML aligned transfers to use DMA
spi: rockchip: add missing spi_master_put
spi: rockchip: disable runtime pm when in err case
Mark Brown [Thu, 10 Mar 2016 03:42:24 +0000 (10:42 +0700)]
Merge remote-tracking branch 'spi/fix/rockchip' into spi-linus
Mark Brown [Thu, 10 Mar 2016 03:42:22 +0000 (10:42 +0700)]
Merge remote-tracking branch 'spi/fix/imx' into spi-linus
Linus Torvalds [Thu, 10 Mar 2016 03:33:05 +0000 (19:33 -0800)]
Merge tag 'ext4_for_linus_stable' of git://git./linux/kernel/git/tytso/ext4
Pull ext4 fix from Ted Ts'o:
"This fixes a regression which crept in v4.5-rc5"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: iterate over buffer heads correctly in move_extent_per_page()
Linus Torvalds [Thu, 10 Mar 2016 03:12:37 +0000 (19:12 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"A few imx fixes I missed from a couple of weeks ago, they still aren't
that big and fix some regression and a fail to boot problem.
Other than that, a couple of regression fixes for radeon/amdgpu, one
regression fix for vmwgfx and one regression fix for tda998x"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
Revert "drm/radeon/pm: adjust display configuration after powerstate"
drm/amdgpu/dp: add back special handling for NUTMEG
drm/radeon/dp: add back special handling for NUTMEG
drm/i2c: tda998x: Choose between atomic or non atomic dpms helper
drm/vmwgfx: Add back ->detect() and ->fill_modes()
drm/radeon: Fix error handling in radeon_flip_work_func.
drm/amdgpu: Fix error handling in amdgpu_flip_work_func.
drm/imx: Add missing DRM_FORMAT_RGB565 to ipu_plane_formats
drm/imx: notify DRM core about CRTC vblank state
gpu: ipu-v3: Reset IPU before activating IRQ
gpu: ipu-v3: Do not bail out on missing optional port nodes
Linus Torvalds [Thu, 10 Mar 2016 03:01:58 +0000 (19:01 -0800)]
Merge tag 'trace-fixes-v4.5-rc7' of git://git./linux/kernel/git/rostedt/linux-trace
Pull tracing fix from Steven Rostedt:
"I previously sent a fix that prevents all trace events from being
called if the current cpu is offline.
But I forgot that in 3.18, we added lockdep checks to test RCU usage
even when the event is disabled. Although there cannot be any bug
when a cpu is going offline, we now get false warnings triggered by
the added checks of the event being disabled.
I removed the check from the tracepoint code itself, and added it to
the condition section (which is "1" for 'no condition'). This way the
online cpu check will get checked in all the right locations"
* tag 'trace-fixes-v4.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Fix check for cpu online when event is disabled
Eryu Guan [Sun, 21 Feb 2016 23:38:44 +0000 (18:38 -0500)]
ext4: iterate over buffer heads correctly in move_extent_per_page()
In commit
bcff24887d00 ("ext4: don't read blocks from disk after extents
being swapped") bh is not updated correctly in the for loop and wrong
data has been written to disk. generic/324 catches this on sub-page
block size ext4.
Fixes:
bcff24887d00 ("ext4: don't read blocks from disk after extentsbeing swapped")
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Linus Torvalds [Thu, 10 Mar 2016 02:27:52 +0000 (18:27 -0800)]
Merge branch 'akpm' (patches from Andrew)
Merge fixes from Andrew Morton:
"13 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
dma-mapping: avoid oops when parameter cpu_addr is null
mm/hugetlb: use EOPNOTSUPP in hugetlb sysctl handlers
memremap: check pfn validity before passing to pfn_to_page()
mm, thp: fix migration of PTE-mapped transparent huge pages
dax: check return value of dax_radix_entry()
ocfs2: fix return value from ocfs2_page_mkwrite()
arm64: kasan: clear stale stack poison
sched/kasan: remove stale KASAN poison after hotplug
kasan: add functions to clear stack poison
mm: fix mixed zone detection in devm_memremap_pages
list: kill list_force_poison()
mm: __delete_from_page_cache show Bad page if mapped
mm/hugetlb: hugetlb_no_page: rate-limit warning message
Zhen Lei [Wed, 9 Mar 2016 22:08:38 +0000 (14:08 -0800)]
dma-mapping: avoid oops when parameter cpu_addr is null
To keep consistent with kfree, which tolerate ptr is NULL. We do this
because sometimes we may use goto statement, so that success and failure
case can share parts of the code. But unfortunately, dma_free_coherent
called with parameter cpu_addr is null will cause oops, such as showed
below:
Unable to handle kernel paging request at virtual address
ffffffc020d3b2b8
pgd =
ffffffc083a61000
[
ffffffc020d3b2b8] *pgd=
0000000000000000, *pud=
0000000000000000
CPU: 4 PID: 1489 Comm: malloc_dma_1 Tainted: G O 4.1.12 #1
Hardware name: ARM64 (DT)
PC is at __dma_free_coherent.isra.10+0x74/0xc8
LR is at __dma_free+0x9c/0xb0
Process malloc_dma_1 (pid: 1489, stack limit = 0xffffffc0837fc020)
[...]
Call trace:
__dma_free_coherent.isra.10+0x74/0xc8
__dma_free+0x9c/0xb0
malloc_dma+0x104/0x158 [dma_alloc_coherent_mtmalloc]
kthread+0xec/0xfc
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jan Stancek [Wed, 9 Mar 2016 22:08:35 +0000 (14:08 -0800)]
mm/hugetlb: use EOPNOTSUPP in hugetlb sysctl handlers
Replace ENOTSUPP with EOPNOTSUPP. If hugepages are not supported, this
value is propagated to userspace. EOPNOTSUPP is part of uapi and is
widely supported by libc libraries.
It gives nicer message to user, rather than:
# cat /proc/sys/vm/nr_hugepages
cat: /proc/sys/vm/nr_hugepages: Unknown error 524
And also LTP's proc01 test was failing because this ret code (524)
was unexpected:
proc01 1 TFAIL : proc01.c:396: read failed: /proc/sys/vm/nr_hugepages: errno=???(524): Unknown error 524
proc01 2 TFAIL : proc01.c:396: read failed: /proc/sys/vm/nr_hugepages_mempolicy: errno=???(524): Unknown error 524
proc01 3 TFAIL : proc01.c:396: read failed: /proc/sys/vm/nr_overcommit_hugepages: errno=???(524): Unknown error 524
Signed-off-by: Jan Stancek <jstancek@redhat.com>
Acked-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ard Biesheuvel [Wed, 9 Mar 2016 22:08:32 +0000 (14:08 -0800)]
memremap: check pfn validity before passing to pfn_to_page()
In memremap's helper function try_ram_remap(), we dereference a struct
page pointer that was derived from a PFN that is known to be covered by
a 'System RAM' iomem region, and is thus assumed to be a 'valid' PFN,
i.e., a PFN that has a struct page associated with it and is covered by
the kernel direct mapping.
However, the assumption that there is a 1:1 relation between the System
RAM iomem region and the kernel direct mapping is not universally valid
on all architectures, and on ARM and arm64, 'System RAM' may include
regions for which pfn_valid() returns false.
Generally speaking, both __va() and pfn_to_page() should only ever be
called on PFNs/physical addresses for which pfn_valid() returns true, so
add that check to try_ram_remap().
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Kirill A. Shutemov [Wed, 9 Mar 2016 22:08:30 +0000 (14:08 -0800)]
mm, thp: fix migration of PTE-mapped transparent huge pages
We don't have native support of THP migration, so we have to split huge
page into small pages in order to migrate it to different node. This
includes PTE-mapped huge pages.
I made mistake in refcounting patchset: we don't actually split
PTE-mapped huge page in queue_pages_pte_range(), if we step on head
page.
The result is that the head page is queued for migration, but none of
tail pages: putting head page on queue takes pin on the page and any
subsequent attempts of split_huge_pages() would fail and we skip queuing
tail pages.
unmap_and_move_huge_page() will eventually split the huge pages, but
only one of 512 pages would get migrated.
Let's fix the situation.
Fixes:
248db92da13f2507 ("migrate_pages: try to split pages on queuing")
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ross Zwisler [Wed, 9 Mar 2016 22:08:27 +0000 (14:08 -0800)]
dax: check return value of dax_radix_entry()
dax_pfn_mkwrite() previously wasn't checking the return value of the
call to dax_radix_entry(), which was a mistake.
Instead, capture this return value and return the appropriate VM_FAULT_
value.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Matthew Wilcox <willy@linux.intel.com>
Cc: Dave Chinner <david@fromorbit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jan Kara [Wed, 9 Mar 2016 22:08:24 +0000 (14:08 -0800)]
ocfs2: fix return value from ocfs2_page_mkwrite()
ocfs2_page_mkwrite() could mistakenly return error code instead of
mkwrite status value. Fix it.
Signed-off-by: Jan Kara <jack@suse.cz>
Cc: Mark Fasheh <mfasheh@suse.de>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark Rutland [Wed, 9 Mar 2016 22:08:21 +0000 (14:08 -0800)]
arm64: kasan: clear stale stack poison
Functions which the compiler has instrumented for KASAN place poison on
the stack shadow upon entry and remove this poison prior to returning.
In the case of cpuidle, CPUs exit the kernel a number of levels deep in
C code. Any instrumented functions on this critical path will leave
portions of the stack shadow poisoned.
If CPUs lose context and return to the kernel via a cold path, we
restore a prior context saved in __cpu_suspend_enter are forgotten, and
we never remove the poison they placed in the stack shadow area by
functions calls between this and the actual exit of the kernel.
Thus, (depending on stackframe layout) subsequent calls to instrumented
functions may hit this stale poison, resulting in (spurious) KASAN
splats to the console.
To avoid this, clear any stale poison from the idle thread for a CPU
prior to bringing a CPU online.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Reviewed-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark Rutland [Wed, 9 Mar 2016 22:08:18 +0000 (14:08 -0800)]
sched/kasan: remove stale KASAN poison after hotplug
Functions which the compiler has instrumented for KASAN place poison on
the stack shadow upon entry and remove this poision prior to returning.
In the case of CPU hotplug, CPUs exit the kernel a number of levels deep
in C code. Any instrumented functions on this critical path will leave
portions of the stack shadow poisoned.
When a CPU is subsequently brought back into the kernel via a different
path, depending on stackframe, layout calls to instrumented functions
may hit this stale poison, resulting in (spurious) KASAN splats to the
console.
To avoid this, clear any stale poison from the idle thread for a CPU
prior to bringing a CPU online.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Reviewed-by: Ingo Molnar <mingo@kernel.org>
Cc: Alexander Potapenko <glider@google.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mark Rutland [Wed, 9 Mar 2016 22:08:15 +0000 (14:08 -0800)]
kasan: add functions to clear stack poison
Functions which the compiler has instrumented for ASAN place poison on
the stack shadow upon entry and remove this poison prior to returning.
In some cases (e.g. hotplug and idle), CPUs may exit the kernel a
number of levels deep in C code. If there are any instrumented
functions on this critical path, these will leave portions of the idle
thread stack shadow poisoned.
If a CPU returns to the kernel via a different path (e.g. a cold
entry), then depending on stack frame layout subsequent calls to
instrumented functions may use regions of the stack with stale poison,
resulting in (spurious) KASAN splats to the console.
Contemporary GCCs always add stack shadow poisoning when ASAN is
enabled, even when asked to not instrument a function [1], so we can't
simply annotate functions on the critical path to avoid poisoning.
Instead, this series explicitly removes any stale poison before it can
be hit. In the common hotplug case we clear the entire stack shadow in
common code, before a CPU is brought online.
On architectures which perform a cold return as part of cpu idle may
retain an architecture-specific amount of stack contents. To retain the
poison for this retained context, the arch code must call the core KASAN
code, passing a "watermark" stack pointer value beyond which shadow will
be cleared. Architectures which don't perform a cold return as part of
idle do not need any additional code.
This patch (of 3):
Functions which the compiler has instrumented for KASAN place poison on
the stack shadow upon entry and remove this poision prior to returning.
In some cases (e.g. hotplug and idle), CPUs may exit the kernel a number
of levels deep in C code. If there are any instrumented functions on this
critical path, these will leave portions of the stack shadow poisoned.
If a CPU returns to the kernel via a different path (e.g. a cold entry),
then depending on stack frame layout subsequent calls to instrumented
functions may use regions of the stack with stale poison, resulting in
(spurious) KASAN splats to the console.
To avoid this, we must clear stale poison from the stack prior to
instrumented functions being called. This patch adds functions to the
KASAN core for removing poison from (portions of) a task's stack. These
will be used by subsequent patches to avoid problems with hotplug and
idle.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dan Williams [Wed, 9 Mar 2016 22:08:13 +0000 (14:08 -0800)]
mm: fix mixed zone detection in devm_memremap_pages
The check for whether we overlap "System RAM" needs to be done at
section granularity. For example a system with the following mapping:
100000000-
37bffffff : System RAM
37c000000-
837ffffff : Persistent Memory
...is unable to use devm_memremap_pages() as it would result in two
zones colliding within a given section.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Toshi Kani <toshi.kani@hpe.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dan Williams [Wed, 9 Mar 2016 22:08:10 +0000 (14:08 -0800)]
list: kill list_force_poison()
Given we have uninitialized list_heads being passed to list_add() it
will always be the case that those uninitialized values randomly trigger
the poison value. Especially since a list_add() operation will seed the
stack with the poison value for later stack allocations to trip over.
For example, see these two false positive reports:
list_add attempted on force-poisoned entry
WARNING: at lib/list_debug.c:34
[..]
NIP [
c00000000043c390] __list_add+0xb0/0x150
LR [
c00000000043c38c] __list_add+0xac/0x150
Call Trace:
__list_add+0xac/0x150 (unreliable)
__down+0x4c/0xf8
down+0x68/0x70
xfs_buf_lock+0x4c/0x150 [xfs]
list_add attempted on force-poisoned entry(
0000000000000500),
new->next ==
d0000000059ecdb0, new->prev ==
0000000000000500
WARNING: at lib/list_debug.c:33
[..]
NIP [
c00000000042db78] __list_add+0xa8/0x140
LR [
c00000000042db74] __list_add+0xa4/0x140
Call Trace:
__list_add+0xa4/0x140 (unreliable)
rwsem_down_read_failed+0x6c/0x1a0
down_read+0x58/0x60
xfs_log_commit_cil+0x7c/0x600 [xfs]
Fixes: commit
5c2c2587b132 ("mm, dax, pmem: introduce {get|put}_dev_pagemap() for dax-gup")
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Reported-by: Eryu Guan <eguan@redhat.com>
Tested-by: Eryu Guan <eguan@redhat.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hugh Dickins [Wed, 9 Mar 2016 22:08:07 +0000 (14:08 -0800)]
mm: __delete_from_page_cache show Bad page if mapped
Commit
e1534ae95004 ("mm: differentiate page_mapped() from
page_mapcount() for compound pages") changed the famous
BUG_ON(page_mapped(page)) in __delete_from_page_cache() to
VM_BUG_ON_PAGE(page_mapped(page)): which gives us more info when
CONFIG_DEBUG_VM=y, but nothing at all when not.
Although it has not usually been very helpul, being hit long after the
error in question, we do need to know if it actually happens on users'
systems; but reinstating a crash there is likely to be opposed :)
In the non-debug case, pr_alert("BUG: Bad page cache") plus dump_page(),
dump_stack(), add_taint() - I don't really believe LOCKDEP_NOW_UNRELIABLE,
but that seems to be the standard procedure now. Move that, or the
VM_BUG_ON_PAGE(), up before the deletion from tree: so that the
unNULLified page->mapping gives a little more information.
If the inode is being evicted (rather than truncated), it won't have any
vmas left, so it's safe(ish) to assume that the raised mapcount is
erroneous, and we can discount it from page_count to avoid leaking the
page (I'm less worried by leaking the occasional 4kB, than losing a
potential 2MB page with each 4kB page leaked).
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Geoffrey Thomas [Wed, 9 Mar 2016 22:08:04 +0000 (14:08 -0800)]
mm/hugetlb: hugetlb_no_page: rate-limit warning message
The warning message "killed due to inadequate hugepage pool" simply
indicates that SIGBUS was sent, not that the process was forcibly killed.
If the process has a signal handler installed does not fix the problem,
this message can rapidly spam the kernel log.
On my amd64 dev machine that does not have hugepages configured, I can
reproduce the repeated warnings easily by setting vm.nr_hugepages=2 (i.e.,
4 megabytes of huge pages) and running something that sets a signal
handler and forks, like
#include <sys/mman.h>
#include <signal.h>
#include <stdlib.h>
#include <unistd.h>
sig_atomic_t counter = 10;
void handler(int signal)
{
if (counter-- == 0)
exit(0);
}
int main(void)
{
int status;
char *addr = mmap(NULL, 4 *
1048576, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB, -1, 0);
if (addr == MAP_FAILED) {perror("mmap"); return 1;}
*addr = 'x';
switch (fork()) {
case -1:
perror("fork"); return 1;
case 0:
signal(SIGBUS, handler);
*addr = 'x';
break;
default:
*addr = 'x';
wait(&status);
if (WIFSIGNALED(status)) {
psignal(WTERMSIG(status), "child");
}
break;
}
}
Signed-off-by: Geoffrey Thomas <geofft@ldpreload.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Wed, 9 Mar 2016 21:28:27 +0000 (13:28 -0800)]
Merge tag 'pci-v4.5-fixes-5' of git://git./linux/kernel/git/helgaas/pci
Pull PCI fix from Bjorn Helgaas:
"Here's another fix for v4.5. It fixes an ARM regression in v4.0 that
causes many boxes to crash on boot, including cns3xxx, dove,
footbridge, iopl13xx, ip32x, iop33x, ixp4xx, ks8695, mv78xx0, orion5x,
pxa, sa1100, etc.
The change is in code that's only built for ARM and ARM64.
Summary:
Enumeration:
Allow generic PCI domains without bridge "parent" pointer (Krzysztof Hałasa)"
* tag 'pci-v4.5-fixes-5' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: Allow a NULL "parent" pointer in pci_bus_assign_domain_nr()
Steven Rostedt (Red Hat) [Wed, 9 Mar 2016 16:58:41 +0000 (11:58 -0500)]
tracing: Fix check for cpu online when event is disabled
Commit
f37755490fe9b ("tracepoints: Do not trace when cpu is offline") added
a check to make sure that tracepoints only get called when the cpu is
online, as it uses rcu_read_lock_sched() for protection.
Commit
3a630178fd5f3 ("tracing: generate RCU warnings even when tracepoints
are disabled") added lockdep checks (including rcu checks) for events that
are not enabled to catch possible RCU issues that would only be triggered if
a trace event was enabled. Commit
f37755490fe9b only stopped the warnings
when the trace event was enabled but did not prevent warnings if the trace
event was called when disabled.
To fix this, the cpu online check is moved to where the condition is added
to the trace event. This will place the cpu online check in all places that
it may be used now and in the future.
Cc: stable@vger.kernel.org # v3.18+
Fixes:
f37755490fe9b ("tracepoints: Do not trace when cpu is offline")
Fixes:
3a630178fd5f3 ("tracing: generate RCU warnings even when tracepoints are disabled")
Reported-by: Sudeep Holla <sudeep.holla@arm.com>
Tested-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Dave Airlie [Wed, 9 Mar 2016 04:21:12 +0000 (14:21 +1000)]
Merge tag 'imx-drm-fixes-2016-02-19' of git://git.pengutronix.de/git/pza/linux into drm-fixes
ipu-v3 probe and imx-drm crtc and plane fixes
- Fix ipu probe if optional port nodes are not present in the device tree
- Reset the ipu before initializing interrupts, not thereafter
- Notify DRM core about the state of vblank interrupts
- Add missing RGB565 format to the list of plate formats
* tag 'imx-drm-fixes-2016-02-19' of git://git.pengutronix.de/git/pza/linux:
drm/imx: Add missing DRM_FORMAT_RGB565 to ipu_plane_formats
drm/imx: notify DRM core about CRTC vblank state
gpu: ipu-v3: Reset IPU before activating IRQ
gpu: ipu-v3: Do not bail out on missing optional port nodes
Dave Airlie [Wed, 9 Mar 2016 04:19:14 +0000 (14:19 +1000)]
Merge branch 'drm-fixes-4.5' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
radeon and amdgpu fixes for 4.5. Three regression fixes and
some fixups for the error handling in the vblank regression fixes
from earlier.
* 'drm-fixes-4.5' of git://people.freedesktop.org/~agd5f/linux:
Revert "drm/radeon/pm: adjust display configuration after powerstate"
drm/amdgpu/dp: add back special handling for NUTMEG
drm/radeon/dp: add back special handling for NUTMEG
drm/radeon: Fix error handling in radeon_flip_work_func.
drm/amdgpu: Fix error handling in amdgpu_flip_work_func.
Alex Deucher [Tue, 8 Mar 2016 16:31:00 +0000 (11:31 -0500)]
Revert "drm/radeon/pm: adjust display configuration after powerstate"
This reverts commit
39d4275058baf53e89203407bf3841ff2c74fa32.
This caused a regression on some older hardware.
bug:
https://bugzilla.kernel.org/show_bug.cgi?id=113891
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Linus Torvalds [Tue, 8 Mar 2016 17:41:20 +0000 (09:41 -0800)]
Merge tag 'sound-4.5' of git://git./linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"It's always an ambivalent feeling to send a large pull request at the
late stage like this, especially when most of patches came from me.
Anyway, this is a collection of lots of small fixes that slipped from
the previous pull request.
All fixes are about ASoC, and the majority of changes are corrections
of the wrong access types in ALSA ctl enum items. They are mostly
harmless on 32bit architectures, but actually buggy on 64bit. So we
addressed all these now in a shot. The rest are various small ASoC
driver fixes.
Among them, only two changes have been done to ASoC core, and both of
them are trivial. The rest are all device-specific. So overall, they
should be safe to apply"
* tag 'sound-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (33 commits)
ASoC: wm_adsp: Fix enum ctl accesses in a wrong type
ASoC: wm9081: Fix enum ctl accesses in a wrong type
ASoC: wm8996: Fix enum ctl accesses in a wrong type
ASoC: wm8994: Fix enum ctl accesses in a wrong type
ASoC: wm8985: Fix enum ctl accesses in a wrong type
ASoC: wm8983: Fix enum ctl accesses in a wrong type
ASoC: wm8958: Fix enum ctl accesses in a wrong type
ASoC: wm8904: Fix enum ctl accesses in a wrong type
ASoC: wm8753: Fix enum ctl accesses in a wrong type
ASoC: wl1273: Fix enum ctl accesses in a wrong type
ASoC: tlv320dac33: Fix enum ctl accesses in a wrong type
ASoC: max98095: Fix enum ctl accesses in a wrong type
ASoC: max98088: Fix enum ctl accesses in a wrong type
ASoC: ab8500: Fix enum ctl accesses in a wrong type
ASoC: da732x: Fix enum ctl accesses in a wrong type
ASoC: cs42l51: Fix enum ctl accesses in a wrong type
ASoC: intel: mfld: Fix enum ctl accesses in a wrong type
ASoC: omap: rx51: Fix enum ctl accesses in a wrong type
ASoC: omap: n810: Fix enum ctl accesses in a wrong type
ASoC: pxa: tosa: Fix enum ctl accesses in a wrong type
...
Linus Torvalds [Tue, 8 Mar 2016 17:29:00 +0000 (09:29 -0800)]
Merge tag 'edac_fix_for_4.5' of git://git./linux/kernel/git/bp/bp
Pull EDAC fix from Borislav Petkov:
"Last minute fix for sb_edac which fixes DIMM detection on certain Xeon
Phi configurations:
A single fix to the Xeon Phi section of sb_edac. The issue was
introduced during this merge window"
* tag 'edac_fix_for_4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
EDAC, sb_edac: Fix logic when computing DIMM sizes on Xeon Phi
Alex Deucher [Fri, 4 Mar 2016 00:34:28 +0000 (19:34 -0500)]
drm/amdgpu/dp: add back special handling for NUTMEG
When I fixed the dp rate selection in:
3b73b168cffd9c392584d3f665021fa2190f8612
drm/amdgpu: fix dp link rate selection (v2)
I accidently dropped the special handling for NUTMEG
DP bridge chips. They require a fixed link rate.
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Alex Deucher [Fri, 4 Mar 2016 00:26:24 +0000 (19:26 -0500)]
drm/radeon/dp: add back special handling for NUTMEG
When I fixed the dp rate selection in:
092c96a8ab9d1bd60ada2ed385cc364ce084180e
drm/radeon: fix dp link rate selection (v2)
I accidently dropped the special handling for NUTMEG
DP bridge chips. They require a fixed link rate.
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Ken Wang <Qingqing.Wang@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Tested-by: Ken Moffat <zarniwhoop@ntlworld.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Christian Borntraeger [Mon, 29 Feb 2016 14:59:18 +0000 (15:59 +0100)]
s390/cpumf: Fix lpp detection
we have to check bit 40 of the facility list before issuing LPP
and not bit 48. Otherwise a guest running on a system with
"The decimal-floating-point zoned-conversion facility" and without
the "The set-program-parameters facility" might crash on an lpp
instruction.
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: stable@vger.kernel.org # v4.4+
Fixes:
e22cf8ca6f75 ("s390/cpumf: rework program parameter setting to detect guest samples")
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Jyri Sarha [Sat, 16 Jan 2016 20:17:54 +0000 (22:17 +0200)]
drm/i2c: tda998x: Choose between atomic or non atomic dpms helper
Choose between atomic or non atomic connector dpms helper. If tda998x
is connected to a drm driver that does not support atomic modeset
calling drm_atomic_helper_connector_dpms() causes a crash when the
connectors atomic state is not initialized. The patch implements a
driver specific connector dpms helper that calls
drm_atomic_helper_connector_dpms() if driver supports DRIVER_ATOMIC
and otherwise it calls the legacy drm_helper_connector_dpms().
Fixes commit
9736e988d328 ("drm/i2c: tda998x: Add support for atomic
modesetting").
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Thierry Reding [Mon, 7 Mar 2016 17:06:01 +0000 (18:06 +0100)]
drm/vmwgfx: Add back ->detect() and ->fill_modes()
This partially reverts commit
d56f57ac969c ("drm/gma500: Move to private
save/restore hooks") which removed these lines by mistake.
Reported-by: Sebastian Herbszt <herbszt@gmx.de>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Tested-by: Thomas Hellstrom <thellstrom@vmware.com>
Tested-by: Sebastian Herbszt <herbszt@gmx.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Linus Torvalds [Mon, 7 Mar 2016 23:41:10 +0000 (15:41 -0800)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Fix ordering of WEXT netlink messages so we don't see a newlink
after a dellink, from Johannes Berg.
2) Out of bounds access in minstrel_ht_set_best_prob_rage, from
Konstantin Khlebnikov.
3) Paging buffer memory leak in iwlwifi, from Matti Gottlieb.
4) Wrong units used to set initial TCP rto from cached metrics, also
from Konstantin Khlebnikov.
5) Fix stale IP options data in the SKB control block from leaking
through layers of encapsulation, from Bernie Harris.
6) Zero padding len miscalculated in bnxt_en, from Michael Chan.
7) Only CHECKSUM_PARTIAL packets should be passed down through GSO, fix
from Hannes Frederic Sowa.
8) Fix suspend/resume with JME networking devices, from Diego Violat
and Guo-Fu Tseng.
9) Checksums not validated properly in bridge multicast support due to
the placement of the SKB header pointers at the time of the check,
fix from Álvaro Fernández Rojas.
10) Fix hang/tiemout with r8169 if a stats fetch is done while the
device is runtime suspended. From Chun-Hao Lin.
11) The forwarding database netlink dump facilities don't track the
state of the dump properly, resulting in skipped/missed entries.
From Minoura Makoto.
12) Fix regression from a recent 3c59x bug fix, from Neil Horman.
13) Fix list corruption in bna driver, from Ivan Vecera.
14) Big endian machines crash on vlan add in bnx2x, fix from Michal
Schmidt.
15) Ethtool RSS configuration not propagated properly in mlx5 driver,
from Tariq Toukan.
16) Fix regression in PHY probing in stmmac driver, from Gabriel
Fernandez.
17) Fix SKB tailroom calculation in igmp/mld code, from Benjamin
Poirier.
18) A past change to skip empty routing headers in ipv6 extention header
parsing accidently caused fragment headers to not be matched any
longer. Fix from Florian Westphal.
19) eTSEC-106 erratum needs to be applied to more gianfar chips, from
Atsushi Nemoto.
20) Fix netdev reference after free via workqueues in usb networking
drivers, from Oliver Neukum and Bjørn Mork.
21) mdio->irq is now an array rather than a pointer to dynamic memory,
but several drivers were still trying to free it :-/ Fixes from
Colin Ian King.
22) act_ipt iptables action forgets to set the family field, thus LOG
netfilter targets don't work with it. Fix from Phil Sutter.
23) SKB leak in ibmveth when skb_linearize() fails, from Thomas Falcon.
24) pskb_may_pull() cannot be called with interrupts disabled, fix code
that tries to do this in vmxnet3 driver, from Neil Horman.
25) be2net driver leaks iomap'd memory on removal, fix from Douglas
Miller.
26) Forgotton RTNL mutex unlock in ppp_create_interface() error paths,
from Guillaume Nault.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (97 commits)
ppp: release rtnl mutex when interface creation fails
cdc_ncm: do not call usbnet_link_change from cdc_ncm_bind
tcp: fix tcpi_segs_in after connection establishment
net: hns: fix the bug about loopback
jme: Fix device PM wakeup API usage
jme: Do not enable NIC WoL functions on S0
udp6: fix UDP/IPv6 encap resubmit path
be2net: Don't leak iomapped memory on removal.
vmxnet3: avoid calling pskb_may_pull with interrupts disabled
net: ethernet: Add missing MFD_SYSCON dependency on HAS_IOMEM
ibmveth: check return of skb_linearize in ibmveth_start_xmit
cdc_ncm: toggle altsetting to force reset before setup
usbnet: cleanup after bind() in probe()
mlxsw: pci: Correctly determine if descriptor queue is full
mlxsw: spectrum: Always decrement bridge's ref count
tipc: fix nullptr crash during subscription cancel
net: eth: altera: do not free array priv->mdio->irq
net/ethoc: do not free array priv->mdio->irq
net: sched: fix act_ipt for LOG target
asix: do not free array priv->mdio->irq
...
Linus Torvalds [Mon, 7 Mar 2016 23:23:25 +0000 (15:23 -0800)]
Merge branch 'overlayfs-linus' of git://git./linux/kernel/git/mszeredi/vfs
Pull overlayfs fixes from Miklos Szeredi:
"Overlayfs bug fixes. All marked as -stable material"
* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: copy new uid/gid into overlayfs runtime inode
ovl: ignore lower entries when checking purity of non-directory entries
ovl: fix getcwd() failure after unsuccessful rmdir
ovl: fix working on distributed fs as lower layer
Linus Torvalds [Mon, 7 Mar 2016 21:15:09 +0000 (13:15 -0800)]
Revert "drm/radeon: call hpd_irq_event on resume"
This reverts commit
dbb17a21c131eca94eb31136eee9a7fe5aff00d9.
It turns out that commit can cause problems for systems with multiple
GPUs, and causes X to hang on at least a HP Pavilion dv7 with hybrid
graphics.
This got noticed originally in 4.4.4, where this patch had already
gotten back-ported, but 4.5-rc7 was verified to have the same problem.
Alexander Deucher says:
"It looks like you have a muxed system so I suspect what's happening is
that one of the display is being reported as connected for both the
IGP and the dGPU and then the desktop environment gets confused or
there some sort problem in the detect functions since the mux is not
switched to the dGPU. I don't see an easy fix unless Dave has any
ideas. I'd say just revert for now"
Reported-by: Jörg-Volker Peetz <jvpeetz@web.de>
Acked-by: Alexander Deucher <Alexander.Deucher@amd.com>
Cc: Dave Airlie <airlied@gmail.com>
Cc: stable@kernel.org # wherever dbb17a21c131 got back-ported
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Guillaume Nault [Mon, 7 Mar 2016 18:36:44 +0000 (19:36 +0100)]
ppp: release rtnl mutex when interface creation fails
Add missing rtnl_unlock() in the error path of ppp_create_interface().
Fixes:
58a89ecaca53 ("ppp: fix lockdep splat in ppp_dev_uninit()")
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Bjørn Mork [Mon, 7 Mar 2016 20:15:36 +0000 (21:15 +0100)]
cdc_ncm: do not call usbnet_link_change from cdc_ncm_bind
usbnet_link_change will call schedule_work and should be
avoided if bind is failing. Otherwise we will end up with
scheduled work referring to a netdev which has gone away.
Instead of making the call conditional, we can just defer
it to usbnet_probe, using the driver_info flag made for
this purpose.
Fixes:
8a34b0ae8778 ("usbnet: cdc_ncm: apply usbnet_link_change")
Reported-by: Andrey Konovalov <andreyknvl@gmail.com>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Sun, 6 Mar 2016 17:29:21 +0000 (09:29 -0800)]
tcp: fix tcpi_segs_in after connection establishment
If final packet (ACK) of 3WHS is lost, it appears we do not properly
account the following incoming segment into tcpi_segs_in
While we are at it, starts segs_in with one, to count the SYN packet.
We do not yet count number of SYN we received for a request sock, we
might add this someday.
packetdrill script showing proper behavior after fix :
// Tests tcpi_segs_in when 3rd packet (ACK) of 3WHS is lost
0.000 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
+0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
+0 bind(3, ..., ...) = 0
+0 listen(3, 1) = 0
+0 < S 0:0(0) win 32792 <mss 1000,sackOK,nop,nop>
+0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK>
+.020 < P. 1:1001(1000) ack 1 win 32792
+0 accept(3, ..., ...) = 4
+.000 %{ assert tcpi_segs_in == 2, 'tcpi_segs_in=%d' % tcpi_segs_in }%
Fixes:
2efd055c53c06 ("tcp: add tcpi_segs_in and tcpi_segs_out to tcp_info")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
yankejian [Sat, 5 Mar 2016 06:10:42 +0000 (14:10 +0800)]
net: hns: fix the bug about loopback
It will always be passed if the soc is tested the loopback cases. This
patch will fix this bug.
Signed-off-by: Kejian Yan <yankejian@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Guo-Fu Tseng [Sat, 5 Mar 2016 00:11:56 +0000 (08:11 +0800)]
jme: Fix device PM wakeup API usage
According to Documentation/power/devices.txt
The driver should not use device_set_wakeup_enable() which is the policy
for user to decide.
Using device_init_wakeup() to initialize dev->power.should_wakeup and
dev->power.can_wakeup on driver initialization.
And use device_may_wakeup() on suspend to decide if WoL function should
be enabled on NIC.
Reported-by: Diego Viola <diego.viola@gmail.com>
Signed-off-by: Guo-Fu Tseng <cooldavid@cooldavid.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Guo-Fu Tseng [Sat, 5 Mar 2016 00:11:55 +0000 (08:11 +0800)]
jme: Do not enable NIC WoL functions on S0
Otherwise it might be back on resume right after going to suspend in
some hardware.
Reported-by: Diego Viola <diego.viola@gmail.com>
Signed-off-by: Guo-Fu Tseng <cooldavid@cooldavid.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Krzysztof =?utf-8?Q?Ha=C5=82asa?= [Tue, 1 Mar 2016 06:07:18 +0000 (07:07 +0100)]
PCI: Allow a NULL "parent" pointer in pci_bus_assign_domain_nr()
pci_create_root_bus() passes a "parent" pointer to
pci_bus_assign_domain_nr(). When CONFIG_PCI_DOMAINS_GENERIC is defined,
pci_bus_assign_domain_nr() dereferences that pointer. Many callers of
pci_create_root_bus() supply a NULL "parent" pointer, which leads to a NULL
pointer dereference error.
7c674700098c ("PCI: Move domain assignment from arm64 to generic code")
moved the "parent" dereference from arm64 to generic code. Only arm64 used
that code (because only arm64 defined CONFIG_PCI_DOMAINS_GENERIC), and it
always supplied a valid "parent" pointer. Other arches supplied NULL
"parent" pointers but didn't defined CONFIG_PCI_DOMAINS_GENERIC, so they
used a no-op version of pci_bus_assign_domain_nr().
8c7d14746abc ("ARM/PCI: Move to generic PCI domains") defined
CONFIG_PCI_DOMAINS_GENERIC on ARM, and many ARM platforms use
pci_common_init(), which supplies a NULL "parent" pointer.
These platforms (cns3xxx, dove, footbridge, iop13xx, etc.) crash
with a NULL pointer dereference like this while probing PCI:
Unable to handle kernel NULL pointer dereference at virtual address
000000a4
PC is at pci_bus_assign_domain_nr+0x10/0x84
LR is at pci_create_root_bus+0x48/0x2e4
Kernel panic - not syncing: Attempted to kill init!
[bhelgaas: changelog, add "Reported:" and "Fixes:" tags]
Reported: http://forum.doozan.com/read.php?2,17868,22070,quote=1
Fixes:
8c7d14746abc ("ARM/PCI: Move to generic PCI domains")
Fixes:
7c674700098c ("PCI: Move domain assignment from arm64 to generic code")
Signed-off-by: Krzysztof Hałasa <khalasa@piap.pl>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
CC: stable@vger.kernel.org # v4.0+
Bill Sommerfeld [Fri, 4 Mar 2016 22:47:21 +0000 (14:47 -0800)]
udp6: fix UDP/IPv6 encap resubmit path
IPv4 interprets a negative return value from a protocol handler as a
request to redispatch to a new protocol. In contrast, IPv6 interprets a
negative value as an error, and interprets a positive value as a request
for redispatch.
UDP for IPv6 was unaware of this difference. Change __udp6_lib_rcv() to
return a positive value for redispatch. Note that the socket's
encap_rcv hook still needs to return a negative value to request
dispatch, and in the case of IPv6 packets, adjust IP6CB(skb)->nhoff to
identify the byte containing the next protocol.
Signed-off-by: Bill Sommerfeld <wsommerfeld@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Douglas Miller [Fri, 4 Mar 2016 21:36:56 +0000 (15:36 -0600)]
be2net: Don't leak iomapped memory on removal.
The adapter->pcicfg resource is either mapped via pci_iomap() or
derived from adapter->db. During be_remove() this resource was ignored
and so could remain mapped after remove.
Add a flag to track whether adapter->pcicfg was mapped or not, then
use that flag in be_unmap_pci_bars() to unmap if required.
Fixes:
25848c901 ("use PCI MMIO read instead of config read for errors")
Signed-off-by: Douglas Miller <dougmill@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Neil Horman [Fri, 4 Mar 2016 18:40:48 +0000 (13:40 -0500)]
vmxnet3: avoid calling pskb_may_pull with interrupts disabled
vmxnet3 has a function vmxnet3_parse_and_copy_hdr which, among other operations,
uses pskb_may_pull to linearize the header portion of an skb. That operation
eventually uses local_bh_disable/enable to ensure that it doesn't race with the
drivers bottom half handler. Unfortunately, vmxnet3 preforms this
parse_and_copy operation with a spinlock held and interrupts disabled. This
causes us to run afoul of the WARN_ON_ONCE(irqs_disabled()) warning in
local_bh_enable, resulting in this:
WARNING: at kernel/softirq.c:159 local_bh_enable+0x59/0x90() (Not tainted)
Hardware name: VMware Virtual Platform
Modules linked in: ipv6 ppdev parport_pc parport microcode e1000 vmware_balloon
vmxnet3 i2c_piix4 sg ext4 jbd2 mbcache sd_mod crc_t10dif sr_mod cdrom mptspi
mptscsih mptbase scsi_transport_spi pata_acpi ata_generic ata_piix vmwgfx ttm
drm_kms_helper drm i2c_core dm_mirror dm_region_hash dm_log dm_mod [last
unloaded: mperf]
Pid: 6229, comm: sshd Not tainted 2.6.32-616.el6.i686 #1
Call Trace:
[<
c04624d9>] ? warn_slowpath_common+0x89/0xe0
[<
c0469e99>] ? local_bh_enable+0x59/0x90
[<
c046254b>] ? warn_slowpath_null+0x1b/0x20
[<
c0469e99>] ? local_bh_enable+0x59/0x90
[<
c07bb936>] ? skb_copy_bits+0x126/0x210
[<
f8d1d9fe>] ? ext4_ext_find_extent+0x24e/0x2d0 [ext4]
[<
c07bc49e>] ? __pskb_pull_tail+0x6e/0x2b0
[<
f95a6164>] ? vmxnet3_xmit_frame+0xba4/0xef0 [vmxnet3]
[<
c05d15a6>] ? selinux_ip_postroute+0x56/0x320
[<
c0615988>] ? cfq_add_rq_rb+0x98/0x110
[<
c0852df8>] ? packet_rcv+0x48/0x350
[<
c07c5839>] ? dev_queue_xmit_nit+0xc9/0x140
...
Fix it by splitting vmxnet3_parse_and_copy_hdr into two functions:
vmxnet3_parse_hdr, which sets up the internal/on stack ctx datastructure, and
pulls the skb (both of which can be done without holding the spinlock with irqs
disabled
and
vmxnet3_copy_header, which just copies the skb to the tx ring under the lock
safely.
tested and shown to correct the described problem. Applies cleanly to the head
of the net tree
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Shrikrishna Khare <skhare@vmware.com>
CC: "VMware, Inc." <pv-drivers@vmware.com>
CC: "David S. Miller" <davem@davemloft.net>
Acked-by: Shrikrishna Khare <skhare@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 7 Mar 2016 19:58:11 +0000 (14:58 -0500)]
Merge tag 'wireless-drivers-for-davem-2016-03-04' of git://git./linux/kernel/git/kvalo/wireless-drivers
Kalle Valo says:
====================
wireless-drivers fixes for 4.5
iwlwifi
* free firmware paging memory when the module is unloaded or device removed
* fix pending frames counter to fix an issue when removing stations
ssb
* fix a build problem related to ssb_fill_sprom_with_fallback()
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Krzysztof Kozlowski [Fri, 4 Mar 2016 01:04:52 +0000 (10:04 +0900)]
net: ethernet: Add missing MFD_SYSCON dependency on HAS_IOMEM
The MFD_SYSCON depends on HAS_IOMEM so when selecting it avoid unmet
direct dependencies.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Thomas Falcon [Thu, 3 Mar 2016 21:22:36 +0000 (15:22 -0600)]
ibmveth: check return of skb_linearize in ibmveth_start_xmit
If skb_linearize fails, the driver should drop the packet
instead of trying to copy it into the bounce buffer.
Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Bjørn Mork [Thu, 3 Mar 2016 21:20:53 +0000 (22:20 +0100)]
cdc_ncm: toggle altsetting to force reset before setup
Some devices will silently fail setup unless they are reset first.
This is necessary even if the data interface is already in
altsetting 0, which it will be when the device is probed for the
first time. Briefly toggling the altsetting forces a function
reset regardless of the initial state.
This fixes a setup problem observed on a number of Huawei devices,
appearing to operate in NTB-32 mode even if we explicitly set them
to NTB-16 mode.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Hubert Chrzaniuk [Mon, 7 Mar 2016 14:30:45 +0000 (15:30 +0100)]
EDAC, sb_edac: Fix logic when computing DIMM sizes on Xeon Phi
Correct a typo introduced by
d0cdf9003140 ("EDAC, sb_edac: Add Knights Landing (Xeon Phi gen 2) support")
As a result under some configurations DIMMs were not correctly
recognized. Problem affects only Xeon Phi architecture.
Signed-off-by: Hubert Chrzaniuk <hubert.chrzaniuk@intel.com>
Acked-by: Aristeu Rozanski <aris@redhat.com>
Cc: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: lukasz.anaczkowski@intel.com
Link: http://lkml.kernel.org/r/1457361045-26221-1-git-send-email-hubert.chrzaniuk@intel.com
Signed-off-by: Borislav Petkov <bp@suse.de>
Oliver Neukum [Mon, 7 Mar 2016 10:31:10 +0000 (11:31 +0100)]
usbnet: cleanup after bind() in probe()
In case bind() works, but a later error forces bailing
in probe() in error cases work and a timer may be scheduled.
They must be killed. This fixes an error case related to
the double free reported in
http://www.spinics.net/lists/netdev/msg367669.html
and needs to go on top of Linus' fix to cdc-ncm.
Signed-off-by: Oliver Neukum <ONeukum@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 7 Mar 2016 16:39:16 +0000 (11:39 -0500)]
Merge branch 'mlxsw-fixes'
Jiri Pirko says:
====================
mlxsw: couple of fixes
Couple of fixes from Ido.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Mon, 7 Mar 2016 14:15:30 +0000 (15:15 +0100)]
mlxsw: pci: Correctly determine if descriptor queue is full
The descriptor queues for sending (SDQs) and receiving (RDQs) packets
are managed by two counters - producer and consumer - which are both
16-bit in size. A queue is considered full when the difference between
the two equals the queue's maximum number of descriptors.
However, if the producer counter overflows, then it's possible for the
full queue check to fail, as it doesn't take the overflow into account.
In such a case, descriptors already passed to the device - but for which
a completion has yet to be posted - will be overwritten, thereby causing
undefined behavior. The above can be achieved under heavy load (~30
netperf instances).
Fix that by casting the subtraction result to u16, preventing it from
being treated as a signed integer.
Fixes:
eda6500a987a ("mlxsw: Add PCI bus implementation")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Mon, 7 Mar 2016 14:15:29 +0000 (15:15 +0100)]
mlxsw: spectrum: Always decrement bridge's ref count
Since we only support one VLAN filtering bridge we need to associate a
reference count with it, so that when the last port netdev leaves it, we
would know that a different bridge can be offloaded to hardware.
When a LAG device is memeber in a bridge and port netdevs are leaving
the LAG, we should always decrement the bridge's reference count, as it's
incremented for any port in the LAG.
Fixes:
4dc236c31733 ("mlxsw: spectrum: Handle port leaving LAG while bridged")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Takashi Iwai [Mon, 7 Mar 2016 10:06:46 +0000 (11:06 +0100)]
Merge tag 'asoc-fix-v4.5-rc6' of git://git./linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v4.5
This is far too big a set of fixes for this late in the release cycle
but the overwhelming bulk is essentially the same simple fix from
Takashi for a cut'n'pasted 64 bit cleanliness issue in the userspace
interface where drivers were accessing things using the wrong element in
a union which worked OK on 32 bit platforms as the correct element
happened to be aligned the same way but with 64 bit platforms ABIs are
different and the two members of the union are laid out in different
places. They aren't all tagged to stable since some of these chips have
vanishingly little chance of being used in 64 bit systems.
The other changes are:
- A fix for Qualcomm devices to work on big endian systems. The
original change is actually correct but triggered a bug in regmap
which is too invasive to fix for this cycle and can be worked around
by just letting regmap pick the default.
- A fix for the Samsung I2S driver locking which wasn't using IRQ safe
spinlocks when it needed to.
- A fix for the new Intel Sky Lake driver forgetting that C pointer
arithmetic takes the type of the pointer into consideration.
- A revert of a change to the FSL SSI driver that broke some systems.
- A fix for the cleanup path of the wm9713 driver.
- A fix for some incorrect register definitions in the ADAU17x1 driver
that caused misclocking in some configurations.
- A fix for the tracepoints for jack detection to avoid using an
internal field of the core jack structure which is no longer present
in all configurations.
- A fix for another of the new Intel drivers which tried to write to a
string literal.
Parthasarathy Bhuvaragan [Thu, 3 Mar 2016 16:54:54 +0000 (17:54 +0100)]
tipc: fix nullptr crash during subscription cancel
commit
4d5cfcba2f6e ('tipc: fix connection abort during subscription
cancel'), removes the check for a valid subscription before calling
tipc_nametbl_subscribe().
This will lead to a nullptr exception when we process a
subscription cancel request. For a cancel request, a null
subscription is passed to tipc_nametbl_subscribe() resulting
in exception.
In this commit, we call tipc_nametbl_subscribe() only for
a valid subscription.
Fixes:
4d5cfcba2f6e ('tipc: fix connection abort during subscription cancel')
Reported-by: Anders Widell <anders.widell@ericsson.com>
Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Colin Ian King [Thu, 3 Mar 2016 13:47:18 +0000 (13:47 +0000)]
net: eth: altera: do not free array priv->mdio->irq
priv->mdio->irq used to be allocated and required freeing, but it
is now a fixed sized array and should no longer be free'd.
Issue detected using static analysis with CoverityScan
Fixes:
e7f4dc3536a400 ("mdio: Move allocation of interrupts into core")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Colin Ian King [Thu, 3 Mar 2016 13:43:34 +0000 (13:43 +0000)]
net/ethoc: do not free array priv->mdio->irq
priv->mdio->irq used to be allocated and required freeing, but it
is now a fixed sized array and should no longer be free'd.
Issue detected using static analysis with CoverityScan
Fixes:
e7f4dc3536a400 ("mdio: Move allocation of interrupts into core")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Tobias Klauser <tklauser@distanz.ch>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Phil Sutter [Thu, 3 Mar 2016 13:34:14 +0000 (14:34 +0100)]
net: sched: fix act_ipt for LOG target
Before calling the destroy() or target() callbacks, the family parameter
field has to be initialized. Otherwise at least the LOG target will
refuse to work and upon removal oops the kernel.
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Phil Sutter <phil@nwl.cc>
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Colin Ian King [Thu, 3 Mar 2016 13:27:56 +0000 (13:27 +0000)]
asix: do not free array priv->mdio->irq
Used to be allocated and required freeing, but now
priv->mdio->irq is now a fixed sized array and should no longer be
free'd.
Issue detected using static analysis with CoverityScan
Fixes:
e7f4dc3536a400 ("mdio: Move allocation of interrupts into core")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Atsushi Nemoto [Thu, 3 Mar 2016 00:07:51 +0000 (09:07 +0900)]
gianfar: Enable eTSEC-106 erratum w/a for MPC8548E Rev2
Enable workaround for MPC8548E erratum eTSEC 106,
"Excess delays when transmitting TOE=1 large frames".
(see commit
53fad77375ce "gianfar: Enable eTSEC-20 erratum w/a
for P2020 Rev1")
This erratum was fixed in Rev 3.1.x.
Signed-off-by: Atsushi Nemoto <nemoto@toshiba-tops.co.jp>
Acked-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sun, 6 Mar 2016 22:48:03 +0000 (14:48 -0800)]
Linux 4.5-rc7
Linus Torvalds [Sun, 6 Mar 2016 22:14:54 +0000 (14:14 -0800)]
Merge tag 'armsoc-fixes' of git://git./linux/kernel/git/arm/arm-soc
Pull ARM SoC fix from Olof Johansson:
"Tiny fixes branch this week, in fact only one patch.
Turns out the USB support for a Renesas board was developed on a
pre-release board that ended up being changed before shipping. To
avoid breakage on those boards, and avoid confusion, it's a reasonable
idea to patch now instead of later. There are no known users of the
pre-release variant any more"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: dts: porter: remove enable prop from HS-USB device node
Linus Torvalds [Sun, 6 Mar 2016 21:51:27 +0000 (13:51 -0800)]
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
"Just two ARM fixes this time: one to fix the hyp-stub for older ARM
CPUs, and another to fix the set_memory_xx() permission functions to
deal with zero sizes correctly"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8544/1: set_memory_xx fixes
ARM: 8534/1: virt: fix hyp-stub build for pre-ARMv7 CPUs
Linus Torvalds [Sun, 6 Mar 2016 19:31:13 +0000 (11:31 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client
Pull ceph fix from Sage Weil:
"This is a final commit we missed to align the protocol compatibility
with the feature bits.
It decodes a few extra fields in two different messages and reports
EIO when they are used (not yet supported)"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
ceph: initial CEPH_FEATURE_FS_FILE_LAYOUT_V2 support
Linus Torvalds [Sun, 6 Mar 2016 19:24:05 +0000 (11:24 -0800)]
Merge tag 'upstream-4.5-rc7' of git://git.infradead.org/linux-ubifs
Pull UBI fix from Richard Weinberger:
"This contains a single bug fix for UBI"
* tag 'upstream-4.5-rc7' of git://git.infradead.org/linux-ubifs:
ubi: Fix out of bounds write in volume update code
Linus Torvalds [Sun, 6 Mar 2016 19:19:28 +0000 (11:19 -0800)]
Merge branch 'for-linus-4.5-rc7' of git://git./linux/kernel/git/rw/uml
Pull UML fixes from Richard Weinberger:
"This contains three bug/build fixes"
* 'for-linus-4.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
um: use %lx format specifiers for unsigned longs
um: Export pm_power_off
Revert "um: Fix get_signal() usage"
Linus Torvalds [Sun, 6 Mar 2016 19:14:16 +0000 (11:14 -0800)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
"Another round of fixes for 4.5:
- Fix the use of an undocumented syntactial variant of the .type
pseudo op which is not supported by the LLVM assembler.
- Fix invalid initialization on S-cache-less systems.
- Fix possible information leak from the kernel stack for SIGFPE.
- Fix handling of copy_{from,to}_user() return value in KVM
- Fix the last instance of irq_to_gpio() which now was causing build
errors"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: traps: Fix SIGFPE information leak from `do_ov' and `do_trap_or_bp'
MIPS: kvm: Fix ioctl error handling.
MIPS: scache: Fix scache init with invalid line size.
MIPS: Avoid variant of .type unsupported by LLVM Assembler
MIPS: jz4740: Fix surviving instance of irq_to_gpio()
Linus Torvalds [Sun, 6 Mar 2016 19:08:06 +0000 (11:08 -0800)]
Merge tag 'powerpc-4.5-5' of git://git./linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- cxl: Fix PSL timebase synchronization detection from Frederic Barrat
- Fix oops when destroying hw_breakpoint event from Ravi Bangoria
- Avoid lbarx on e5500 from Scott Wood
* tag 'powerpc-4.5-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/fsl-book3e: Avoid lbarx on e5500
powerpc/hw_breakpoint: Fix oops when destroying hw_breakpoint event
cxl: Fix PSL timebase synchronization detection
Linus Torvalds [Sun, 6 Mar 2016 19:03:34 +0000 (11:03 -0800)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux
Pull i2c fix from Wolfram Sang:
"One I2C bugfix ensuring correct memory allocation in a driver"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: brcmstb: allocate correct amount of memory for regmap
Linus Torvalds [Sun, 6 Mar 2016 18:50:00 +0000 (10:50 -0800)]
Merge tag 'usb-4.5-rc7' of git://git./linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are some USB driver ids for 4.5-rc7, and the removal of a driver
we merged in 4.5-rc1 but it turns out it's not needed as the hardware
is the same as a driver we already have in the tree.
This was only figured out after doing a lot of cleanup on it, gotta
love vendor-provided drivers... The new device ids for the devices
for this driver will be added later on when testing is completed, but
for now, we will remove the driver to keep people from accidentally
cleaning it up.
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-4.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: qcserial: add Sierra Wireless EM74xx device ID
Revert "USB: serial: add Moxa UPORT 11x0 driver"
USB: serial: option: add support for Quectel UC20
USB: serial: option: add support for Telit LE922 PID 0x1045
USB: cp210x: Add ID for Parrot NMEA GPS Flight Recorder
USB: qcserial: add Dell Wireless 5809e Gobi 4G HSPA+ (rev3)
usb: chipidea: otg: change workqueue ci_otg as freezable
Colin Ian King [Sat, 23 Jan 2016 19:17:59 +0000 (19:17 +0000)]
um: use %lx format specifiers for unsigned longs
static analysis from cppcheck detected %x being used for
unsigned longs:
[arch/x86/um/os-Linux/task_size.c:112]: (warning) %x in format
string (no. 1) requires 'unsigned int' but the argument type
is 'unsigned long'.
Use %lx instead of %x
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Richard Weinberger [Mon, 25 Jan 2016 22:24:21 +0000 (23:24 +0100)]
um: Export pm_power_off
...modules are using this symbol.
Export it like all other archs to.
Signed-off-by: Richard Weinberger <richard@nod.at>
Richard Weinberger [Mon, 25 Jan 2016 22:33:30 +0000 (23:33 +0100)]
Revert "um: Fix get_signal() usage"
Commit
db2f24dc240856fb1d78005307f1523b7b3c121b
was plain wrong. I did not realize the we are
allowed to loop here.
In fact we have to loop and must not return to userspace
before all SIGSEGVs have been delivered.
Other archs do this directly in their entry code, UML
does it here.
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
Richard Weinberger [Sun, 21 Feb 2016 09:53:03 +0000 (10:53 +0100)]
ubi: Fix out of bounds write in volume update code
ubi_start_leb_change() allocates too few bytes.
ubi_more_leb_change_data() will write up to req->upd_bytes +
ubi->min_io_size bytes.
Cc: stable@vger.kernel.org
Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Linus Torvalds [Sat, 5 Mar 2016 20:35:48 +0000 (12:35 -0800)]
Merge tag 'sound-4.5-rc7' of git://git./linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"It's our tradition to get a high volume of fixes late at rc7: this
time, X32 ABI breakage was found and this resulted in a high number
LOCs. The necessary changes to ALSA core codes were fairly
straightforward, and more importantly, they are specific to X32, thus
should be safe to apply.
Other than that, rather a collection of small fixes:
- Removal of the code that blocks too long at closing the OSS
sequencer client (which was spotted by syzkaller, unsurprisingly)
- Fixes races at HD-audio HDMI i915 audio binding
- a few HDSP/HDPM zero-division fixes
- Quirks for HD-audio and USB-audio as usual"
* tag 'sound-4.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - hdmi defer to register acomp eld notifier
ALSA: hda - hdmi add wmb barrier for audio component
ALSA: hda - Fix mic issues on Acer Aspire E1-472
ALSA: seq: oss: Don't drain at closing a client
ALSA: usb-audio: Add a quirk for Plantronics DA45
ALSA: hdsp: Fix wrong boolean ctl value accesses
ALSA: hdspm: Fix zero-division
ALSA: hdspm: Fix wrong boolean ctl value accesses
ALSA: timer: Fix ioctls for X32 ABI
ALSA: timer: Fix broken compat timer user status ioctl
ALSA: rawmidi: Fix ioctls X32 ABI
ALSA: rawmidi: Use comapt_put_timespec()
ALSA: pcm: Fix ioctls for X32 ABI
ALSA: ctl: Fix ioctls for X32 ABI
Linus Torvalds [Sat, 5 Mar 2016 20:34:29 +0000 (12:34 -0800)]
Merge tag 'dmaengine-fix-4.5-rc7' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine fix from Vinod Koul:
"One minor fix on pxa driver to fix the cyclic dma tranfers"
* tag 'dmaengine-fix-4.5-rc7' of git://git.infradead.org/users/vkoul/slave-dma:
dmaengine: pxa_dma: fix cyclic transfers
Linus Torvalds [Sat, 5 Mar 2016 20:32:34 +0000 (12:32 -0800)]
Merge tag 'media/v4.5-4' of git://git./linux/kernel/git/mchehab/linux-media
Pull media fixes from Mauro Carvalho Chehab:
- some last time changes before we stablize the new entity function
integer numbers at uAPI
- probe: fix erroneous return value on i2c/adp1653 driver
- fix tx 5v detect regression on adv7604 driver
- fix missing unlock on error in vpfe_prepare_pipeline() on
davinci_vpfe driver
* tag 'media/v4.5-4' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
[media] media: Sanitise the reserved fields of the G_TOPOLOGY IOCTL arguments
[media] media.h: postpone connectors entities
[media] media.h: use hex values for range offsets, move connectors base up.
[media] adv7604: fix tx 5v detect regression
[media] media.h: get rid of MEDIA_ENT_F_CONN_TEST
[media] [for,v4.5] media.h: increase the spacing between function ranges
[media] media: i2c/adp1653: probe: fix erroneous return value
[media] media: davinci_vpfe: fix missing unlock on error in vpfe_prepare_pipeline()
Mario Kleiner [Tue, 1 Mar 2016 20:31:17 +0000 (21:31 +0100)]
drm/radeon: Fix error handling in radeon_flip_work_func.
This is a port of the patch "drm/amdgpu: Fix error handling in amdgpu_flip_work_func."
to fix the following problem for radeon as well which was
reported against amdgpu:
The patch
e1d09dc0ccc6: "drm/amdgpu: Don't hang in
amdgpu_flip_work_func on disabled crtc." from Feb 19, 2016, leads to
the following static checker warning, as reported by Dan Carpenter in
https://lists.freedesktop.org/archives/dri-devel/2016-February/101987.html
drivers/gpu/drm/amd/amdgpu/amdgpu_display.c:127 amdgpu_flip_work_func() warn: should this be 'repcnt == -1'
drivers/gpu/drm/amd/amdgpu/amdgpu_display.c:136 amdgpu_flip_work_func() error: double unlock 'spin_lock:&crtc->dev->event_lock'
drivers/gpu/drm/amd/amdgpu/amdgpu_display.c:136 amdgpu_flip_work_func() error: double unlock 'irqsave:flags'
This patch fixes both reported problems:
Change post-decrement of repcnt to pre-decrement, so
it can't underflow anymore, but still performs up to
three repetitions - three is the maximum one could
expect in practice.
Move the spin_unlock_irqrestore to where it actually
belongs.
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Cc: <stable@vger.kernel.org> # 4.4+
Cc: Michel Dänzer <michel.daenzer@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Mario Kleiner [Tue, 1 Mar 2016 20:31:16 +0000 (21:31 +0100)]
drm/amdgpu: Fix error handling in amdgpu_flip_work_func.
The patch
e1d09dc0ccc6: "drm/amdgpu: Don't hang in
amdgpu_flip_work_func on disabled crtc." from Feb 19, 2016, leads to
the following static checker warning, as reported by Dan Carpenter in
https://lists.freedesktop.org/archives/dri-devel/2016-February/101987.html
drivers/gpu/drm/amd/amdgpu/amdgpu_display.c:127 amdgpu_flip_work_func() warn: should this be 'repcnt == -1'
drivers/gpu/drm/amd/amdgpu/amdgpu_display.c:136 amdgpu_flip_work_func() error: double unlock 'spin_lock:&crtc->dev->event_lock'
drivers/gpu/drm/amd/amdgpu/amdgpu_display.c:136 amdgpu_flip_work_func() error: double unlock 'irqsave:flags'
This patch fixes both reported problems:
Change post-decrement of repcnt to pre-decrement, so
it can't underflow anymore, but still performs up to
three repetitions - three is the maximum one could
expect in practice.
Move the spin_unlock_irqrestore to where it actually
belongs.
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Cc: <stable@vger.kernel.org> # 4.4+
Cc: Michel Dänzer <michel.daenzer@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Mark Brown [Sat, 5 Mar 2016 12:27:13 +0000 (21:27 +0900)]
Merge remote-tracking branches 'asoc/fix/wm8985', 'asoc/fix/wm8994', 'asoc/fix/wm8996', 'asoc/fix/wm9081' and 'asoc/fix/wm9713' into asoc-linus
Mark Brown [Sat, 5 Mar 2016 12:26:58 +0000 (21:26 +0900)]
Merge remote-tracking branches 'asoc/fix/samsung', 'asoc/fix/tlv320dac33', 'asoc/fix/wl1273', 'asoc/fix/wm8753', 'asoc/fix/wm8904', 'asoc/fix/wm8958' and 'asoc/fix/wm8983' into asoc-linus
Mark Brown [Sat, 5 Mar 2016 12:26:45 +0000 (21:26 +0900)]
Merge remote-tracking branches 'asoc/fix/jack', 'asoc/fix/max98088', 'asoc/fix/max98095', 'asoc/fix/omap', 'asoc/fix/pxa' and 'asoc/fix/qcom-be' into asoc-linus
Mark Brown [Sat, 5 Mar 2016 12:26:33 +0000 (21:26 +0900)]
Merge remote-tracking branches 'asoc/fix/ab8500', 'asoc/fix/adau17x1', 'asoc/fix/adsp', 'asoc/fix/cs42l51', 'asoc/fix/da732x' and 'asoc/fix/fsl-ssi' into asoc-linus
Mark Brown [Sat, 5 Mar 2016 12:26:30 +0000 (21:26 +0900)]
Merge remote-tracking branch 'asoc/fix/intel' into asoc-linus
Mark Brown [Sat, 5 Mar 2016 12:26:28 +0000 (21:26 +0900)]
Merge remote-tracking branch 'asoc/fix/dapm' into asoc-linus
Linus Torvalds [Sat, 5 Mar 2016 02:47:18 +0000 (18:47 -0800)]
Merge branch 'libnvdimm-fixes' of git://git./linux/kernel/git/nvdimm/nvdimm
Pull libnvcimm fix from Dan Williams:
"One straggling fix for NVDIMM support.
The KVM/QEMU enabling for NVDIMMs has recently reached the point where
it is able to accept some ACPI _DSM requests from a guest VM. However
they immediately found that the 4.5-rc kernel is unusable because the
kernel's 'nfit' driver fails to load upon seeing a valid "not
supported" response from the virtual BIOS for an address range scrub
command.
It is not mandatory that a platform implement address range scrubbing,
so this fix from Vishal properly treats the 'not supported' response
as 'skip scrubbing and continue loading the driver'"
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
nfit: Continue init even if ARS commands are unimplemented
Linus Torvalds [Sat, 5 Mar 2016 02:41:40 +0000 (18:41 -0800)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Two fairly simple fixes.
One is a regression with ipr firmware loading caused by one of the
trivial patches in the last merge window which failed to strip the \n
from the file name string, so now the firmware loader no longer works
leading to a lot of unhappy ipr users; fix by stripping the \n.
The second is a memory leak within SCSI: the BLK_PREP_INVALID state
was introduced a recent fix but we forgot to account for it correctly
when freeing state, resulting in memory leakage. Add the correct
state freeing in scsi_prep_return()"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
ipr: Fix regression when loading firmware
SCSI: Free resources when we return BLKPREP_INVALID
Linus Torvalds [Sat, 5 Mar 2016 02:31:36 +0000 (18:31 -0800)]
Merge branch 'for-4.5-fixes' of git://git./linux/kernel/git/tj/libata
Pull libata fixes from Tejun Heo:
"Assorted fixes for libata drivers.
- Turns out HDIO_GET_32BIT ioctl was subtly broken all along.
- Recent update to ahci external port handling was incorrectly
marking hotpluggable ports as external making userland handle
devices connected to those ports incorrectly.
- ahci_xgene needs its own irq handler to work around a hardware
erratum. libahci updated to allow irq handler override.
- Misc driver specific updates"
* 'for-4.5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
ata: ahci: don't mark HotPlugCapable Ports as external/removable
ahci: Workaround for ThunderX Errata#22536
libata: Align ata_device's id on a cacheline
Adding Intel Lewisburg device IDs for SATA
pata-rb532-cf: get rid of the irq_to_gpio() call
libata: fix HDIO_GET_32BIT ioctl
ahci_xgene: Implement the workaround to fix the missing of the edge interrupt for the HOST_IRQ_STAT.
ata: Remove the AHCI_HFLAG_EDGE_IRQ support from libahci.
libahci: Implement the capability to override the generic ahci interrupt handler.
Linus Torvalds [Sat, 5 Mar 2016 02:17:17 +0000 (18:17 -0800)]
Merge branch 'for-linus2' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"Round 2 of this. I cut back to the bare necessities, the patch is
still larger than it usually would be at this time, due to the number
of NVMe fixes in there. This pull request contains:
- The 4 core fixes from Ming, that fix both problems with exceeding
the virtual boundary limit in case of merging, and the gap checking
for cloned bio's.
- NVMe fixes from Keith and Christoph:
- Regression on larger user commands, causing problems with
reading log pages (for instance). This touches both NVMe,
and the block core since that is now generally utilized also
for these types of commands.
- Hot removal fixes.
- User exploitable issue with passthrough IO commands, if !length
is given, causing us to fault on writing to the zero
page.
- Fix for a hang under error conditions
- And finally, the current series regression for umount with cgroup
writeback, where the final flush would happen async and hence open
up window after umount where the device wasn't consistent. fsck
right after umount would show this. From Tejun"
* 'for-linus2' of git://git.kernel.dk/linux-block:
block: support large requests in blk_rq_map_user_iov
block: fix blk_rq_get_max_sectors for driver private requests
nvme: fix max_segments integer truncation
nvme: set queue limits for the admin queue
writeback: flush inode cgroup wb switches instead of pinning super_block
NVMe: Fix 0-length integrity payload
NVMe: Don't allow unsupported flags
NVMe: Move error handling to failed reset handler
NVMe: Simplify device reset failure
NVMe: Fix namespace removal deadlock
NVMe: Use IDA for namespace disk naming
NVMe: Don't unmap controller registers on reset
block: merge: get the 1st and last bvec via helpers
block: get the 1st and last bvec via helpers
block: check virt boundary in bio_will_gap()
block: bio: introduce helpers to get the 1st and last bvec
Linus Torvalds [Sat, 5 Mar 2016 02:06:49 +0000 (18:06 -0800)]
Merge tag 'for-linus' of git://git./linux/kernel/git/dledford/rdma
Pull rdma fixes from Doug Ledford:
"Additional 4.5-rc6 fixes.
I have four patches today. I had previously thought I had submitted
two of them last week, but they were accidentally skipped :-(.
- One fix to an error path in the core
- One fix for RoCE in the core
- Two related fixes for the core/mlx5"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
IB/core: Use GRH when the path hop-limit > 0
IB/{core, mlx5}: Fix input len in vendor part of create_qp/srq
IB/mlx5: Avoid using user-index for SRQs
IB/core: Fix missed clean call in registration path
Linus Torvalds [Sat, 5 Mar 2016 01:56:48 +0000 (17:56 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"This contains one i915 patch twice, as I merged it locally for
testing, and then pulled some stuff in on top, and then Jani sent to
me, I didn't think it was worth redoing all the merges of what I had
tested.
Summary:
- amdgpu/radeon fixes for some more power management and VM races.
- Two i915 fixes, one for the a recent regression, one another power
management fix for skylake.
- Two tegra dma mask fixes for a regression.
- One ast fix for a typo I made transcribing the userspace driver,
that I'd like to get into stable so I don't forget about it"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
gpu: host1x: Set DMA ops on device creation
gpu: host1x: Set DMA mask
drm/amdgpu: return from atombios_dp_get_dpcd only when error
drm/amdgpu/cz: remove commented out call to enable vce pg
drm/amdgpu/powerplay/cz: enable/disable vce dpm independent of vce pg
drm/amdgpu/cz: enable/disable vce dpm even if vce pg is disabled
drm/amdgpu/gfx8: specify which engine to wait before vm flush
drm/amdgpu: apply gfx_v8 fixes to gfx_v7 as well
drm/amd/powerplay: send event to notify powerplay all modules are initialized.
drm/amd/powerplay: export AMD_PP_EVENT_COMPLETE_INIT task to amdgpu.
drm/radeon/pm: update current crtc info after setting the powerstate
drm/amdgpu/pm: update current crtc info after setting the powerstate
drm/i915: Balance assert_rpm_wakelock_held() for !IS_ENABLED(CONFIG_PM)
drm/i915/skl: Fix power domain suspend sequence
drm/ast: Fix incorrect register check for DRAM width
drm/i915: Balance assert_rpm_wakelock_held() for !IS_ENABLED(CONFIG_PM)
Linus Torvalds [Sat, 5 Mar 2016 01:51:16 +0000 (17:51 -0800)]
Merge tag 'pm+acpi-4.5-rc7' of git://git./linux/kernel/git/rafael/linux-pm
Pull power management and ACPI fixes from Rafael Wysocki:
"Two build fixes for cpufreq drivers (including one for breakage
introduced recently) and a fix for a graph tracer crash when used over
suspend-to-RAM on x86.
Specifics:
- Prevent the graph tracer from crashing when used over suspend-to-
RAM on x86 by pausing it before invoking do_suspend_lowlevel() and
un-pausing it when that function has returned (Todd Brandt).
- Fix build issues in the qoriq and mediatek cpufreq drivers related
to broken dependencies on THERMAL (Arnd Bergmann)"
* tag 'pm+acpi-4.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM / sleep / x86: Fix crash on graph trace through x86 suspend
cpufreq: mediatek: allow building as a module
cpufreq: qoriq: allow building as module with THERMAL=m
Linus Torvalds [Sat, 5 Mar 2016 01:43:40 +0000 (17:43 -0800)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux
Pull arm64 fix from Will Deacon:
"Arm64 fix for -rc7. Without it, our struct page array can overflow
the vmemmap region on systems with a large PHYS_OFFSET.
Nothing else on the radar at the moment, so hopefully that's it for
4.5 from us.
Summary: Ensure struct page array fits within vmemmap area"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: vmemmap: use virtual projection of linear region
Linus Torvalds [Sat, 5 Mar 2016 01:36:46 +0000 (17:36 -0800)]
Merge tag 'for-linus-
20160304' of git://git.infradead.org/linux-mtd
Pull jffs2 fixes from David Woodhouse:
"This contains two important JFFS2 fixes marked for stable:
- a lock ordering problem between the page lock and the internal
f->sem mutex, which was causing occasional deadlocks in garbage
collection
- a scan failure causing moved directories to sometimes end up
appearing to have hard links.
There are also a couple of trivial MAINTAINERS file updates"
* tag 'for-linus-
20160304' of git://git.infradead.org/linux-mtd:
MAINTAINERS: add maintainer entry for FREESCALE GPMI NAND driver
Fix directory hardlinks from deleted directories
jffs2: Fix page lock / f->sem deadlock
Revert "jffs2: Fix lock acquisition order bug in jffs2_write_begin"
MAINTAINERS: update Han's email
Linus Torvalds [Sat, 5 Mar 2016 01:31:32 +0000 (17:31 -0800)]
Merge branch 'for-linus-4.5' of git://git./linux/kernel/git/mason/linux-btrfs
Pull btrfs fix from Chris Mason:
"Filipe nailed down a problem where tree log replay would do some work
that orphan code wasn't expecting to be done yet, leading to BUG_ON"
* 'for-linus-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: fix loading of orphan roots leading to BUG_ON
Linus Torvalds [Sat, 5 Mar 2016 00:57:04 +0000 (16:57 -0800)]
Merge tag 'trace-fixes-v4.5-rc6' of git://git./linux/kernel/git/rostedt/linux-trace
Pull tracing fix from Steven Rostedt:
"A feature was added in 4.3 that allowed users to filter trace points
on a tasks "comm" field. But this prevented filtering on a comm field
that is within a trace event (like sched_migrate_task).
When trying to filter on when a program migrated, this change
prevented the filtering of the sched_migrate_task.
To fix this, the event fields are examined first, and then the extra
fields like "comm" and "cpu" are examined. Also, instead of testing
to assign the comm filter function based on the field's name, the
generic comm field is given a new filter type (FILTER_COMM). When
this field is used to filter the type is checked. The same is done
for the cpu filter field.
Two new special filter types are added: "COMM" and "CPU". This allows
users to still filter the tasks comm for events that have "comm" as
one of their fields, in cases that users would like to filter
sched_migrate_task on the comm of the task that called the event, and
not the comm of the task that is being migrated"
* tag 'trace-fixes-v4.5-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Do not have 'comm' filter override event 'comm' field