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Chris Mason [Wed, 30 May 2012 15:55:38 +0000 (11:55 -0400)]
Merge branch 'for-chris' of git://git./linux/kernel/git/josef/btrfs-next into HEAD
Stefan Behrens [Wed, 23 May 2012 15:57:49 +0000 (17:57 +0200)]
Btrfs: fix false positive in check-integrity on unmount
During unmount, it could happen that the integrity checker printed a
warning message "attempt to free ... on umount which is not yet iodone"
which turned out to be a false positive.
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Stefan Behrens [Tue, 24 Apr 2012 16:10:16 +0000 (18:10 +0200)]
Btrfs: fix runtime warning in check-integrity check data mode
If a file_extent_item was located at the very end of a leaf and there was
not enough space to hold a full item, but there was enough space to hold
one of type BTRFS_FILE_EXTENT_INLINE or PREALLOC, and it was only such a
short item, a warning was printed anyway. This check is now fixed.
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Stefan Behrens [Fri, 3 Feb 2012 10:20:04 +0000 (11:20 +0100)]
Btrfs: set ioprio of scrub readahead to idle
Reduce ioprio class of scrub readahead threads to idle priority.
This setting is fixed. This priority has shown the best performance
during all measurements.
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Josef Bacik [Tue, 29 May 2012 20:59:49 +0000 (16:59 -0400)]
Btrfs: fix return code in drop_objectid_items
So dpkg fsync()'s the file and the directory containing the file whenever it
writes to a file which is really slow in btrfs. This is partly because
fsync()'ing a directory _always_ committed the transaction instead of just
going to the tree log. This is because drop_objectid_items() would return 1
since it does a btrfs_search_slot() which returns 1. In tree-log jargon
this means that we have to commit the transaction to be safe. So just check
if ret is greater than 0 and set it to 0 if it does. With this patch we now
use the tree-log instead of committing the entire transaction, which is
twice as fast on my box. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Josef Bacik [Tue, 29 May 2012 20:57:49 +0000 (16:57 -0400)]
Btrfs: check to see if the inode is in the log before fsyncing
We have this check down in the actual logging code, but this is after we
start a transaction and all that good stuff. So move the helper
inode_in_log() out so we can call it in fsync() and avoid starting a
transaction altogether and just exit if we've already fsync()'ed this file
recently. You would notice this issue if you fsync()'ed a file over and
over again until the transaction committed. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Tsutomu Itoh [Tue, 29 May 2012 09:10:13 +0000 (18:10 +0900)]
Btrfs: return value of btrfs_read_buffer is checked correctly
btrfs_read_buffer() has the possibility of returning the error.
Therefore, I add the code in which the return value of btrfs_read_buffer()
is checked.
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Stefan Behrens [Fri, 25 May 2012 14:06:10 +0000 (16:06 +0200)]
Btrfs: read device stats on mount, write modified ones during commit
The device statistics are written into the device tree with each
transaction commit. Only modified statistics are written.
When a filesystem is mounted, the device statistics for each involved
device are read from the device tree and used to initialize the
counters.
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Stefan Behrens [Fri, 25 May 2012 14:06:09 +0000 (16:06 +0200)]
Btrfs: add ioctl to get and reset the device stats
An ioctl interface is added to get the device statistic counters.
A second ioctl is added to atomically get and reset these counters.
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Stefan Behrens [Fri, 25 May 2012 14:06:08 +0000 (16:06 +0200)]
Btrfs: add device counters for detected IO and checksum errors
The goal is to detect when drives start to get an increased error rate,
when drives should be replaced soon. Therefore statistic counters are
added that count IO errors (read, write and flush). Additionally, the
software detected errors like checksum errors and corrupted blocks are
counted.
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Asias He [Fri, 25 May 2012 03:10:21 +0000 (11:10 +0800)]
btrfs: Drop unused function btrfs_abort_devices()
1) This function is not used anywhere.
2) Using the blk_abort_queue() to abort the queue seems not correct.
blk_abort_queue() is used for timeout handling (block/blk-timeout.c).
Cc: Chris Mason <chris.mason@oracle.com>
Cc: linux-btrfs@vger.kernel.org
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Asias He <asias@redhat.com>
Miao Xie [Thu, 24 May 2012 10:58:27 +0000 (18:58 +0800)]
Btrfs: fix the same inode id problem when doing auto defragment
Two files in the different subvolumes may have the same inode id, so
The rb-tree which is used to manage the defragment object must take it
into account. This patch fix this problem.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Josef Bacik [Wed, 23 May 2012 20:10:14 +0000 (16:10 -0400)]
Btrfs: fall back to non-inline if we don't have enough space
If cow_file_range_inline fails with ENOSPC we abort the transaction which
isn't very nice. This really shouldn't be happening anyways but there's no
sense in making it a horrible error when we can easily just go allocate
normal data space for this stuff. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Josef Bacik [Wed, 23 May 2012 18:26:42 +0000 (14:26 -0400)]
Btrfs: fix how we deal with the orphan block rsv
Ceph was hitting this race where we would remove an inode from the per-root
orphan list before we would release the space we had reserved for the inode.
We actually don't need a list or anything, we just need to make sure the
root doesn't try to free up the orphan reserve until after the inodes have
released their reservations. So use an atomic counter instead of a list on
the root and only decrement the counter after we've released our
reservation. I've tested this as well as several others and we no longer
see the warnings that you would see while running ceph. Thanks,
Btrfs: fix how we deal with the orphan block rsv
Ceph was hitting this race where we would remove an inode from the per-root
orphan list before we would release the space we had reserved for the inode.
We actually don't need a list or anything, we just need to make sure the
root doesn't try to free up the orphan reserve until after the inodes have
released their reservations. So use an atomic counter instead of a list on
the root and only decrement the counter after we've released our
reservation. I've tested this as well as several others and we no longer
see the warnings that you would see while running ceph. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Josef Bacik [Wed, 23 May 2012 18:13:11 +0000 (14:13 -0400)]
Btrfs: convert the inode bit field to use the actual bit operations
Miao pointed this out while I was working on an orphan problem that messing
with a bitfield where different ranges are protected by different locks
doesn't work out right. Turns out we've been doing this forever where we
have different parts of the bit field protected by either no lock at all or
different locks which could cause all sorts of weird problems including the
issue I was hitting. So instead make a runtime_flags thing that we use the
normal bit operations on that are all atomic so we can keep having our
no/different locking for the different flags and then make force_compress
it's own thing so it can be treated normally. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Josef Bacik [Mon, 14 May 2012 14:06:40 +0000 (10:06 -0400)]
Btrfs: merge contigous regions when loading free space cache
When we write out the free space cache we will write out everything that is
in our in memory tree, and then we will just walk the pinned extents tree
and write anything we see there. The problem with this is that during
normal operations the pinned extents will be merged back into the free space
tree normally, and then we can allocate space from the merged areas and
commit them to the tree log. If we crash and replay the tree log we will
crash again because the tree log will try to free up space from what looks
like 2 seperate but contiguous entries, since one entry is from the original
free space cache and the other was a pinned extent that was merged back. To
fix this we just need to walk the free space tree after we load it and merge
contiguous entries back together. This will keep the tree log stuff from
breaking and it will make the allocator behave more nicely. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Liu Bo [Fri, 11 May 2012 10:11:26 +0000 (18:11 +0800)]
Btrfs: do not do balance in readonly mode
In normal cases, we would not be allowed to do balance in RO mode.
However, when we're using a seeding device and adding another device to sprout,
things will change:
$ mkfs.btrfs /dev/sdb7
$ btrfstune -S 1 /dev/sdb7
$ mount /dev/sdb7 /mnt/btrfs -o ro
$ btrfs fi bal /mnt/btrfs -----------------------> fail.
$ btrfs dev add /dev/sdb8 /mnt/btrfs
$ btrfs fi bal /mnt/btrfs -----------------------> works!
It should not be designed as an exception, and we'd better add another check for
mnt flags.
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Reviewed-by: Josef Bacik <josef@redhat.com>
Liu Bo [Thu, 10 May 2012 10:10:39 +0000 (18:10 +0800)]
Btrfs: use fastpath in extent state ops as much as possible
Fully utilize our extent state's new helper functions to use
fastpath as much as possible.
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Reviewed-by: Josef Bacik <josef@redhat.com>
Liu Bo [Thu, 10 May 2012 10:10:38 +0000 (18:10 +0800)]
Btrfs: fix wrong error returned by adding a device
Reproduce:
$ mkfs.btrfs /dev/sdb7
$ mount /dev/sdb7 /mnt/btrfs -o ro
$ btrfs dev add /dev/sdb8 /mnt/btrfs
ERROR: error adding the device '/dev/sdb8' - Invalid argument
Since we mount with readonly options, and /dev/sdb7 is not a seeding one,
a readonly notification is preferred.
Signed-off-by: Liu Bo <liubo2009@cn.fujitsu.com>
Reviewed-by: Josef Bacik <josef@redhat.com>
Josef Bacik [Wed, 2 May 2012 18:00:54 +0000 (14:00 -0400)]
Btrfs: finish ordered extents in their own thread
We noticed that the ordered extent completion doesn't really rely on having
a page and that it could be done independantly of ending the writeback on a
page. This patch makes us not do the threaded endio stuff for normal
buffered writes and direct writes so we can end page writeback as soon as
possible (in irq context) and only start threads to do the ordered work when
it is actually done. Compression needs to be reworked some to take
advantage of this as well, but atm it has to do a find_get_page in its endio
handler so it must be done in its own thread. This makes direct writes
quite a bit faster. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Josef Bacik [Wed, 2 May 2012 17:52:09 +0000 (13:52 -0400)]
Btrfs: do not check delalloc when updating disk_i_size
We are checking delalloc to see if it is ok to update the i_size. There are
2 cases it stops us from updating
1) If there is delalloc between our current disk_i_size and this ordered
extent
2) If there is delalloc between our current ordered extent and the next
ordered extent
These tests are racy however since we can set delalloc for these ranges at
any time. Also for the first case if we notice there is delalloc between
disk_i_size and our ordered extent we will not update disk_i_size and assume
that when that delalloc bit gets written out it will update everything
properly. However if we crash before that we will have file extents outside
of our i_size, which is not good, so this test is dangerous as well as racy.
Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Jim Meyering [Wed, 25 Apr 2012 19:24:17 +0000 (21:24 +0200)]
Btrfs: avoid buffer overrun in mount option handling
There is an off-by-one error: allocating room for a maximal result
string but without room for a trailing NUL. That, can lead to
returning a transformed string that is not NUL-terminated, and
then to a caller reading beyond end of the malloc'd buffer.
Rewrite to s/kzalloc/kmalloc/, remove unwarranted use of strncpy
(the result is guaranteed to fit), remove dead strlen at end, and
change a few variable names and comments.
Reviewed-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Jim Meyering <meyering@redhat.com>
Jim Meyering [Thu, 26 Apr 2012 16:36:56 +0000 (18:36 +0200)]
Btrfs: NUL-terminate path buffer in DEV_INFO ioctl result
A device with name of length BTRFS_DEVICE_PATH_NAME_MAX or longer
would not be NUL-terminated in the DEV_INFO ioctl result buffer.
Signed-off-by: Jim Meyering <meyering@redhat.com>
Jim Meyering [Thu, 26 Apr 2012 16:35:12 +0000 (18:35 +0200)]
Btrfs: avoid buffer overrun in btrfs_printk
The buffer read-overrun would be triggered by a printk format
starting with <N>, where N is a single digit. NUL-terminate
after strncpy. Use memcpy, not strncpy, since we know the
string we're copying fits in the destination buffer and
contains no NUL byte.
Signed-off-by: Jim Meyering <meyering@redhat.com>
Daniel J Blueman [Wed, 25 Apr 2012 16:37:14 +0000 (00:37 +0800)]
Fix minor type issues
Address some minor type issues identified by sparse checker.
Signed-off-by: Daniel J Blueman <daniel@quora.org>
Sergei Trofimovich [Tue, 24 Apr 2012 19:59:16 +0000 (22:59 +0300)]
btrfs: allow changing 'thread_pool' size at remount time
Changing 'mount -oremount,thread_pool=2 /' didn't make any effect:
maximum amount of worker threads is specified in 2 places:
- in 'strict btrfs_fs_info::thread_pool_size'
- in each worker struct: 'struct btrfs_workers::max_workers'
'mount -oremount' updated only 'btrfs_fs_info::thread_pool_size'.
Fix it by pushing new maximum value to all created worker structures
as well.
Cc: Josef Bacik <josef@redhat.com>
Cc: Chris Mason <chris.mason@oracle.com>
Reviewed-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
Josef Bacik [Mon, 23 Apr 2012 19:09:39 +0000 (15:09 -0400)]
Btrfs: do not do filemap_write_and_wait_range in fsync
We already do the btrfs_wait_ordered_range which will do this for us, so
just remove this call so we don't call it twice. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Josef Bacik [Mon, 23 Apr 2012 18:41:09 +0000 (14:41 -0400)]
Btrfs: remove useless waiting and extra filemap work
In btrfs_wait_ordered_range we have been calling filemap_fdata_write() twice
because compression does strange things and then waiting. Then we look up
ordered extents and if we find any we will always schedule_timeout(); once
and then loop back around and do it all again. We will even check to see if
there is delalloc pages on this range and loop again. So this patch gets
rid of the multipe fdata_write() calls and just does
filemap_write_and_wait(). In the case of compression we will still find the
ordered extents and start those individually if we need to so that is ok,
but in the normal buffered case we avoid all this weird overhead.
Then in the case of the schedule_timeout(1), we don't need it. All callers
either 1) don't care, they just want to make sure what they just wrote maeks
it to disk or 2) are doing the lock()->lookup ordered->unlock->flush thing
in which case it will lock and check for ordered extents _anyway_ so get
back to them as quickly as possible. The delaloc check is simply not
needed, this only catches the case where we write to the file again since
doing the filemap_write_and_wait() and if the caller truly cares about that
it will take care of everything itself. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Josef Bacik [Mon, 23 Apr 2012 18:00:51 +0000 (14:00 -0400)]
Btrfs: fix compile warnings in extent_io.c
These warnings are bogus since we will always have at least one page in an
eb, but to make the compiler happy just set ret = 0 in these two cases.
Thanks,
Btrfs: fix compile warnings in extent_io.c
These warnings are bogus since we will always have at least one page in an
eb, but to make the compiler happy just set ret = 0 in these two cases.
Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Josef Bacik [Mon, 23 Apr 2012 17:55:30 +0000 (13:55 -0400)]
Btrfs: cache no acl on new inodes
When running compilebench I noticed we were spending some time looking up
acls on new inodes, which shouldn't be happening since there were no acls.
This is because when we init acls on the inode after creating them we don't
cache the fact there are no acls if there aren't any. Doing this adds a
little bit of a bump to my compilebench runs. Thanks,
Btrfs: cache no acl on new inodes
Signed-off-by: Josef Bacik <josef@redhat.com>
Josef Bacik [Thu, 5 Apr 2012 19:03:02 +0000 (15:03 -0400)]
Btrfs: use i_version instead of our own sequence
We've been keeping around the inode sequence number in hopes that somebody
would use it, but nobody uses it and people actually use i_version which
serves the same purpose, so use i_version where we used the incore inode's
sequence number and that way the sequence is updated properly across the
board, and not just in file write. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Linus Torvalds [Sun, 20 May 2012 22:29:13 +0000 (15:29 -0700)]
Linux 3.4
Linus Torvalds [Sat, 19 May 2012 22:30:15 +0000 (15:30 -0700)]
Merge tag 'parisc-fixes' of git://git./linux/kernel/git/jejb/parisc-2.6
Pull PA-RISC fixes from James Bottomley:
"This is a set of three bug fixes that gets parisc running again on
systems with PA1.1 processors.
Two fix regressions introduced in 2.6.39 and one fixes a prefetch bug
that only affects PA7300LC processors. We also have another pending
fix to do with the sectional arrangement of vmlinux.lds, but there's a
query on it during testing on one particular system type, so I'll hold
off sending it in for now."
* tag 'parisc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6:
[PARISC] fix panic on prefetch(NULL) on PA7300LC
[PARISC] fix crash in flush_icache_page_asm on PA1.1
[PARISC] fix PA1.1 oops on boot
Linus Torvalds [Sat, 19 May 2012 22:28:22 +0000 (15:28 -0700)]
Merge branch 'x86/ld-fix' of git://git./linux/kernel/git/tip/tip
Pull x86 linker bug workarounds from Peter Anvin.
GNU ld-2.22.52.0.[12] (*) has an unfortunate bug where it incorrectly
turns certain relocation entries absolute. Section-relative symbols
that are part of otherwise empty sections are silently changed them to
absolute. We rely on section-relative symbols staying section-relative,
and actually have several sections in the linker script solely for this
purpose.
See for example
http://sourceware.org/bugzilla/show_bug.cgi?id=14052
We could just black-list the buggy linker, but it appears that it got
shipped in at least F17, and possibly other distros too, so it's sadly
not some rare unusual case.
This backports the workaround from the x86/trampoline branch, and as
Peter says: "This is not a minimal fix, not at all, but it is a tested
code base."
* 'x86/ld-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, relocs: When printing an error, say relative or absolute
x86, relocs: Workaround for binutils 2.22.52.0.1 section bug
x86, realmode: 16-bit real-mode code support for relocs tool
(*) That's a manly release numbering system. Stupid, sure. But manly.
Linus Torvalds [Sat, 19 May 2012 17:12:17 +0000 (10:12 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block layer fixes from Jens Axboe:
"A few small, but important fixes. Most of them are marked for stable
as well
- Fix failure to release a semaphore on error path in mtip32xx.
- Fix crashable condition in bio_get_nr_vecs().
- Don't mark end-of-disk buffers as mapped, limit it to i_size.
- Fix for build problem with CONFIG_BLOCK=n on arm at least.
- Fix for a buffer overlow on UUID partition printing.
- Trivial removal of unused variables in dac960."
* 'for-linus' of git://git.kernel.dk/linux-block:
block: fix buffer overflow when printing partition UUIDs
Fix blkdev.h build errors when BLOCK=n
bio allocation failure due to bio_get_nr_vecs()
block: don't mark buffers beyond end of disk as mapped
mtip32xx: release the semaphore on an error path
dac960: Remove unused variables from DAC960_CreateProcEntries()
Linus Torvalds [Sat, 19 May 2012 17:10:59 +0000 (10:10 -0700)]
Merge git://git./linux/kernel/git/davem/net
Pull one more networking bug-fix from David Miller:
"One last straggler.
Eric Dumazet's pktgen unload oops fix was not entirely complete, but
all the cases should be handled properly now.... fingers crossed."
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
pktgen: fix module unload for good
Hugh Dickins [Fri, 18 May 2012 18:28:34 +0000 (11:28 -0700)]
memcg,thp: fix res_counter:96 regression
Occasionally, testing memcg's move_charge_at_immigrate on rc7 shows
a flurry of hundreds of warnings at kernel/res_counter.c:96, where
res_counter_uncharge_locked() does WARN_ON(counter->usage < val).
The first trace of each flurry implicates __mem_cgroup_cancel_charge()
of mc.precharge, and an audit of mc.precharge handling points to
mem_cgroup_move_charge_pte_range()'s THP handling in commit
12724850e806
("memcg: avoid THP split in task migration").
Checking !mc.precharge is good everywhere else, when a single page is to
be charged; but here the "mc.precharge -= HPAGE_PMD_NR" likely to
follow, is liable to result in underflow (a lot can change since the
precharge was estimated).
Simply check against HPAGE_PMD_NR: there's probably a better
alternative, trying precharge for more, splitting if unsuccessful; but
this one-liner is safer for now - no kernel/res_counter.c:96 warnings
seen in 26 hours.
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
H. Peter Anvin [Fri, 18 May 2012 16:52:01 +0000 (09:52 -0700)]
x86, relocs: When printing an error, say relative or absolute
When the relocs tool throws an error, let the error message say if it
is an absolute or relative symbol. This should make it a lot more
clear what action the programmer needs to take and should help us find
the reason if additional symbol bugs show up.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: <stable@vger.kernel.org>
H. Peter Anvin [Fri, 18 May 2012 07:24:09 +0000 (00:24 -0700)]
x86, relocs: Workaround for binutils 2.22.52.0.1 section bug
GNU ld 2.22.52.0.1 has a bug that it blindly changes symbols from
section-relative to absolute if they are in a section of zero length.
This turns the symbols __init_begin and __init_end into absolute
symbols. Let the relocs program know that those should be treated as
relative symbols.
Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: H.J. Lu <hjl.tools@gmail.com>
Cc: <stable@vger.kernel.org>
Cc: Jarkko Sakkinen <jarkko.sakkinen@intel.com>
H. Peter Anvin [Tue, 8 May 2012 18:22:24 +0000 (21:22 +0300)]
x86, realmode: 16-bit real-mode code support for relocs tool
A new option is added to the relocs tool called '--realmode'.
This option causes the generation of 16-bit segment relocations
and 32-bit linear relocations for the real-mode code. When
the real-mode code is moved to the low-memory during kernel
initialization, these relocation entries can be used to
relocate the code properly.
In the assembly code 16-bit segment relocations must be relative
to the 'real_mode_seg' absolute symbol. Linear relocations must be
relative to a symbol prefixed with 'pa_'.
16-bit segment relocation is used to load cs:ip in 16-bit code.
Linear relocations are used in the 32-bit code for relocatable
data references. They are declared in the linker script of the
real-mode code.
The relocs tool is moved to arch/x86/tools/relocs.c, and added new
target archscripts that can be used to build scripts needed building
an architecture. be compiled before building the arch/x86 tree.
[ hpa: accelerating this because it detects invalid absolute
relocations, a serious bug in binutils 2.22.52.0.x which currently
produces bad kernels. ]
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/r/1336501366-28617-2-git-send-email-jarkko.sakkinen@intel.com
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: <stable@vger.kernel.org>
Linus Torvalds [Sat, 19 May 2012 01:22:45 +0000 (18:22 -0700)]
Merge tag 'dm-3.4-fixes-2' of git://git./linux/kernel/git/agk/linux-dm
Pull a dm fix from Alasdair G Kergon:
"A fix to the thin provisioning userspace interface."
* tag 'dm-3.4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm:
dm thin: fix table output when pool target disables discard passdown internally
Mike Snitzer [Sat, 19 May 2012 00:01:01 +0000 (01:01 +0100)]
dm thin: fix table output when pool target disables discard passdown internally
When the thin pool target clears the discard_passdown parameter
internally, it incorrectly changes the table line reported to userspace.
This breaks dumb string comparisons on these table lines in generic
userspace device-mapper library code and leads to tables being reloaded
repeatedly when nothing is actually meant to be changing.
This patch corrects this by no longer changing the table line when
discard passdown was disabled.
We can still tell when discard passdown is overridden by looking for the
message "Discard unsupported by data device (sdX): Disabling discard passdown."
This automatic detection is also moved from the 'load' to the 'resume'
so that it is re-evaluated should the properties of underlying devices
change.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Linus Torvalds [Fri, 18 May 2012 23:19:59 +0000 (16:19 -0700)]
Merge tag 'md-3.4-fixes' of git://neil.brown.name/md
Pull one more md bugfix from NeilBrown:
"Fix bug in recent fix to RAID10.
Without this patch, recovery will crash"
* tag 'md-3.4-fixes' of git://neil.brown.name/md:
md/raid10: fix transcription error in calc_sectors conversion.
Linus Torvalds [Fri, 18 May 2012 23:16:42 +0000 (16:16 -0700)]
Merge branch 'stable' of git://git./linux/kernel/git/cmetcalf/linux-tile
Pull tile tree bugfix from Chris Metcalf:
"This fixes a security vulnerability (and correctness bug) in tilegx"
* 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
tilegx: enable SYSCALL_WRAPPERS support
NeilBrown [Fri, 18 May 2012 23:01:13 +0000 (09:01 +1000)]
md/raid10: fix transcription error in calc_sectors conversion.
The old code was
sector_div(stride, fc);
the new code was
sector_dir(size, conf->near_copies);
'size' is right (the stride various wasn't really needed), but
'fc' means 'far_copies', and that is an important difference.
Signed-off-by: NeilBrown <neilb@suse.de>
Linus Torvalds [Fri, 18 May 2012 22:56:25 +0000 (15:56 -0700)]
Merge branch 'akpm' (Andrew's patch-bomb)
Merge misc fixes from Andrew Morton.
* emailed from Andrew Morton <akpm@linux-foundation.org>: (4 patches)
frv: delete incorrect task prototypes causing compile fail
slub: missing test for partial pages flush work in flush_all()
fs, proc: fix ABBA deadlock in case of execution attempt of map_files/ entries
drivers/rtc/rtc-pl031.c: configure correct wday for 2000-01-01
Linus Torvalds [Fri, 18 May 2012 18:32:15 +0000 (11:32 -0700)]
proc: move fd symlink i_mode calculations into tid_fd_revalidate()
Instead of doing the i_mode calculations at proc_fd_instantiate() time,
move them into tid_fd_revalidate(), which is where the other inode state
(notably uid/gid information) is updated too.
Otherwise we'll end up with stale i_mode information if an fd is re-used
while the dentry still hangs around. Not that anything really *cares*
(symlink permissions don't really matter), but Tetsuo Handa noticed that
the owner read/write bits don't always match the state of the
readability of the file descriptor, and we _used_ to get this right a
long time ago in a galaxy far, far away.
Besides, aside from fixing an ugly detail (that has apparently been this
way since commit
61a28784028e: "proc: Remove the hard coded inode
numbers" in 2006), this removes more lines of code than it adds. And it
just makes sense to update i_mode in the same place we update i_uid/gid.
Al Viro correctly points out that we could just do the inode fill in the
inode iops ->getattr() function instead. However, that does require
somewhat slightly more invasive changes, and adds yet *another* lookup
of the file descriptor. We need to do the revalidate() for other
reasons anyway, and have the file descriptor handy, so we might as well
fill in the information at this point.
Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Eric Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Eric Dumazet [Thu, 17 May 2012 23:52:26 +0000 (23:52 +0000)]
pktgen: fix module unload for good
commit
c57b5468406 (pktgen: fix crash at module unload) did a very poor
job with list primitives.
1) list_splice() arguments were in the wrong order
2) list_splice(list, head) has undefined behavior if head is not
initialized.
3) We should use the list_splice_init() variant to clear pktgen_threads
list.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Chris Metcalf [Fri, 18 May 2012 17:33:24 +0000 (13:33 -0400)]
tilegx: enable SYSCALL_WRAPPERS support
Some discussion with the glibc mailing lists revealed that this was
necessary for 64-bit platforms with MIPS-like sign-extension rules
for 32-bit values. The original symptom was that passing (uid_t)-1 to
setreuid() was failing in programs linked -pthread because of the "setxid"
mechanism for passing setxid-type function arguments to the syscall code.
SYSCALL_WRAPPERS handles ensuring that all syscall arguments end up with
proper sign-extension and is thus the appropriate fix for this problem.
On other platforms (s390, powerpc, sparc64, and mips) this was fixed
in 2.6.28.6. The general issue is tracked as CVE-2009-0029.
Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Linus Torvalds [Fri, 18 May 2012 16:42:20 +0000 (09:42 -0700)]
Merge tag 'linus-mce-fix' of git://git./linux/kernel/git/ras/ras
Pull a machine check recovery fix from Tony Luck.
I really don't like how the MCE code does some of the things it does,
but this does seem to be an improvement.
* tag 'linus-mce-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
x86/mce: Only restart instruction after machine check recovery if it is safe
Paul Gortmaker [Fri, 18 May 2012 00:03:26 +0000 (17:03 -0700)]
frv: delete incorrect task prototypes causing compile fail
Commit
41101809a865 ("fork: Provide weak arch_release_[task_struct|
thread_info] functions") in -tip highlights a problem in the frv arch,
where it has needles prototypes for alloc_task_struct_node and
free_task_struct. This now shows up as:
kernel/fork.c:120:66: error: static declaration of 'alloc_task_struct_node' follows non-static declaration
kernel/fork.c:127:51: error: static declaration of 'free_task_struct' follows non-static declaration
since that commit turned them into real functions. Since arch/frv does
does not define define __HAVE_ARCH_TASK_STRUCT_ALLOCATOR (i.e. it just
uses the generic ones) it shouldn't list these at all.
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
majianpeng [Fri, 18 May 2012 00:03:26 +0000 (17:03 -0700)]
slub: missing test for partial pages flush work in flush_all()
I found some kernel messages such as:
SLUB raid5-md127: kmem_cache_destroy called for cache that still has objects.
Pid: 6143, comm: mdadm Tainted: G O 3.4.0-rc6+ #75
Call Trace:
kmem_cache_destroy+0x328/0x400
free_conf+0x2d/0xf0 [raid456]
stop+0x41/0x60 [raid456]
md_stop+0x1a/0x60 [md_mod]
do_md_stop+0x74/0x470 [md_mod]
md_ioctl+0xff/0x11f0 [md_mod]
blkdev_ioctl+0xd8/0x7a0
block_ioctl+0x3b/0x40
do_vfs_ioctl+0x96/0x560
sys_ioctl+0x91/0xa0
system_call_fastpath+0x16/0x1b
Then using kmemleak I found these messages:
unreferenced object 0xffff8800b6db7380 (size 112):
comm "mdadm", pid 5783, jiffies
4294810749 (age 90.589s)
hex dump (first 32 bytes):
01 01 db b6 ad 4e ad de ff ff ff ff ff ff ff ff .....N..........
ff ff ff ff ff ff ff ff 98 40 4a 82 ff ff ff ff .........@J.....
backtrace:
kmemleak_alloc+0x21/0x50
kmem_cache_alloc+0xeb/0x1b0
kmem_cache_open+0x2f1/0x430
kmem_cache_create+0x158/0x320
setup_conf+0x649/0x770 [raid456]
run+0x68b/0x840 [raid456]
md_run+0x529/0x940 [md_mod]
do_md_run+0x18/0xc0 [md_mod]
md_ioctl+0xba8/0x11f0 [md_mod]
blkdev_ioctl+0xd8/0x7a0
block_ioctl+0x3b/0x40
do_vfs_ioctl+0x96/0x560
sys_ioctl+0x91/0xa0
system_call_fastpath+0x16/0x1b
This bug was introduced by commit
a8364d5555b ("slub: only IPI CPUs that
have per cpu obj to flush"), which did not include checks for per cpu
partial pages being present on a cpu.
Signed-off-by: majianpeng <majianpeng@gmail.com>
Cc: Gilad Ben-Yossef <gilad@benyossef.com>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Tested-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cyrill Gorcunov [Fri, 18 May 2012 00:03:25 +0000 (17:03 -0700)]
fs, proc: fix ABBA deadlock in case of execution attempt of map_files/ entries
map_files/ entries are never supposed to be executed, still curious
minds might try to run them, which leads to the following deadlock
======================================================
[ INFO: possible circular locking dependency detected ]
3.4.0-rc4-24406-g841e6a6 #121 Not tainted
-------------------------------------------------------
bash/1556 is trying to acquire lock:
(&sb->s_type->i_mutex_key#8){+.+.+.}, at: do_lookup+0x267/0x2b1
but task is already holding lock:
(&sig->cred_guard_mutex){+.+.+.}, at: prepare_bprm_creds+0x2d/0x69
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&sig->cred_guard_mutex){+.+.+.}:
validate_chain+0x444/0x4f4
__lock_acquire+0x387/0x3f8
lock_acquire+0x12b/0x158
__mutex_lock_common+0x56/0x3a9
mutex_lock_killable_nested+0x40/0x45
lock_trace+0x24/0x59
proc_map_files_lookup+0x5a/0x165
__lookup_hash+0x52/0x73
do_lookup+0x276/0x2b1
walk_component+0x3d/0x114
do_last+0xfc/0x540
path_openat+0xd3/0x306
do_filp_open+0x3d/0x89
do_sys_open+0x74/0x106
sys_open+0x21/0x23
tracesys+0xdd/0xe2
-> #0 (&sb->s_type->i_mutex_key#8){+.+.+.}:
check_prev_add+0x6a/0x1ef
validate_chain+0x444/0x4f4
__lock_acquire+0x387/0x3f8
lock_acquire+0x12b/0x158
__mutex_lock_common+0x56/0x3a9
mutex_lock_nested+0x40/0x45
do_lookup+0x267/0x2b1
walk_component+0x3d/0x114
link_path_walk+0x1f9/0x48f
path_openat+0xb6/0x306
do_filp_open+0x3d/0x89
open_exec+0x25/0xa0
do_execve_common+0xea/0x2f9
do_execve+0x43/0x45
sys_execve+0x43/0x5a
stub_execve+0x6c/0xc0
This is because prepare_bprm_creds grabs task->signal->cred_guard_mutex
and when do_lookup happens we try to grab task->signal->cred_guard_mutex
again in lock_trace.
Fix it using plain ptrace_may_access() helper in proc_map_files_lookup()
and in proc_map_files_readdir() instead of lock_trace(), the caller must
be CAP_SYS_ADMIN granted anyway.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Reported-by: Sasha Levin <levinsasha928@gmail.com>
Cc: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Pavel Emelyanov <xemul@openvz.org>
Cc: Dave Jones <davej@redhat.com>
Cc: Vasiliy Kulikov <segoon@openwall.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rajkumar Kasirajan [Fri, 18 May 2012 00:03:24 +0000 (17:03 -0700)]
drivers/rtc/rtc-pl031.c: configure correct wday for 2000-01-01
The reset date of the ST Micro version of PL031 is 2000-01-01. The
correct weekday for 2000-01-01 is saturday, but pl031 is initialized to
sunday. This may lead to alarm malfunction, so configure the correct
wday if RTC_DR indicates reset.
Signed-off-by: Rajkumar Kasirajan <rajkumar.kasirajan@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Mattias Wallin <mattias.wallin@stericsson.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Thu, 17 May 2012 23:52:29 +0000 (16:52 -0700)]
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King:
"Small set of fixes again."
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: 7419/1: vfp: fix VFP flushing regression on sigreturn path
ARM: 7418/1: LPAE: fix access flag setup in mem_type_table
ARM: prevent VM_GROWSDOWN mmaps extending below FIRST_USER_ADDRESS
ARM: 7417/1: vfp: ensure preemption is disabled when enabling VFP access
Linus Torvalds [Thu, 17 May 2012 23:30:26 +0000 (16:30 -0700)]
Merge git://git./linux/kernel/git/davem/net
Pull two networking fixes from David S. Miller:
1) Thanks to Willy Tarreau and Eric Dumazet, we've unlocked a bug that's
been present in do_tcp_sendpages() since that function was written in
2002.
When we block to wait for memory we have to unconditionally try and
push out pending TCP data, otherwise we can block for an unreasonably
long amount of time.
2) Fix deadlock in e1000, fixes kernel bugzilla 43132
From Tushar Dave.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
e1000: Prevent reset task killing itself.
tcp: do_tcp_sendpages() must try to push data out on oom conditions
Rafael J. Wysocki [Thu, 17 May 2012 22:39:35 +0000 (00:39 +0200)]
ACPI / PCI / PM: Fix device PM regression related to D3hot/D3cold
Commit
1cc0c998fdf2 ("ACPI: Fix D3hot v D3cold confusion") introduced a
bug in __acpi_bus_set_power() and changed the behavior of
acpi_pci_set_power_state() in such a way that it generally doesn't work
as expected if PCI_D3hot is passed to it as the second argument.
First off, if ACPI_STATE_D3 (equal to ACPI_STATE_D3_COLD) is passed to
__acpi_bus_set_power() and the explicit_set flag is set for the D3cold
state, the function will try to execute AML method called "_PS4", which
doesn't exist.
Fix this by adding a check to ensure that the name of the AML method
to execute for transitions to ACPI_STATE_D3_COLD is correct in
__acpi_bus_set_power(). Also make sure that the explicit_set flag
for ACPI_STATE_D3_COLD will be set if _PS3 is present and modify
acpi_power_transition() to avoid accessing power resources for
ACPI_STATE_D3_COLD, because they don't exist.
Second, if PCI_D3hot is passed to acpi_pci_set_power_state() as the
target state, the function will request a transition to
ACPI_STATE_D3_HOT instead of ACPI_STATE_D3. However,
ACPI_STATE_D3_HOT is now only marked as supported if the _PR3 AML
method is defined for the given device, which is rare. This causes
problems to happen on systems where devices were successfully put
into ACPI D3 by pci_set_power_state(PCI_D3hot) which doesn't work
now. In particular, some unused graphics adapters are not turned
off as a result.
To fix this issue restore the old behavior of
acpi_pci_set_power_state(), which is to request a transition to
ACPI_STATE_D3 (equal to ACPI_STATE_D3_COLD) if either PCI_D3hot or
PCI_D3cold is passed to it as the argument.
This approach is not ideal, because generally power should not
be removed from devices if PCI_D3hot is the target power state,
but since this behavior is relied on, we have no choice but to
restore it at the moment and spend more time on designing a
better solution in the future.
References: https://bugzilla.kernel.org/show_bug.cgi?id=43228
Reported-by: rocko <rockorequin@hotmail.com>
Reported-by: Cristian RodrÃguez <crrodriguez@opensuse.org>
Reported-and-tested-by: Peter <lekensteyn@gmail.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Tushar Dave [Thu, 17 May 2012 01:04:50 +0000 (01:04 +0000)]
e1000: Prevent reset task killing itself.
Killing reset task while adapter is resetting causes deadlock.
Only kill reset task if adapter is not resetting.
Ref bug #43132 on bugzilla.kernel.org
CC: stable@vger.kernel.org
Signed-off-by: Tushar Dave <tushar.n.dave@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Willy Tarreau [Thu, 17 May 2012 11:14:14 +0000 (11:14 +0000)]
tcp: do_tcp_sendpages() must try to push data out on oom conditions
Since recent changes on TCP splicing (starting with commits
2f533844
"tcp: allow splice() to build full TSO packets" and
35f9c09f "tcp:
tcp_sendpages() should call tcp_push() once"), I started seeing
massive stalls when forwarding traffic between two sockets using
splice() when pipe buffers were larger than socket buffers.
Latest changes (net: netdev_alloc_skb() use build_skb()) made the
problem even more apparent.
The reason seems to be that if do_tcp_sendpages() fails on out of memory
condition without being able to send at least one byte, tcp_push() is not
called and the buffers cannot be flushed.
After applying the attached patch, I cannot reproduce the stalls at all
and the data rate it perfectly stable and steady under any condition
which previously caused the problem to be permanent.
The issue seems to have been there since before the kernel migrated to
git, which makes me think that the stalls I occasionally experienced
with tux during stress-tests years ago were probably related to the
same issue.
This issue was first encountered on 3.0.31 and 3.2.17, so please backport
to -stable.
Signed-off-by: Willy Tarreau <w@1wt.eu>
Acked-by: Eric Dumazet <edumazet@google.com>
Cc: <stable@vger.kernel.org>
Linus Torvalds [Thu, 17 May 2012 20:25:17 +0000 (13:25 -0700)]
Merge branch '3.4-urgent' of git://git./linux/kernel/git/nab/target-pending
Pull two more target-core updates from Nicholas Bellinger:
"The first patch addresses a SPC-2 reservations RELEASE bug in a
special (iscsi specific) multi-ISID setup case that was allowing the
same initiator to be able to incorrect release it's own reservation on
a different SCSI path with enforce_pr_isid=1 operation. This bug was
caught by Bernhard Kohl.
The second patch is to address a bug with FILEIO backends where the
incorrect number of blocks for READ_CAPACITY was being reported after
an underlying device-mapper block_device size change. This patch uses
now i_size_read() in fd_get_blocks() for FILEIO backends with an
underlying block_device, instead of trying to determine this value at
setup time during fd_create_virtdevice(). (hch CC'ed)
Both are CC'ed to stable."
* '3.4-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
target: Fix bug in handling of FILEIO + block_device resize ops
target: Fix SPC-2 RELEASE bug for multi-session iSCSI client setups
Nicholas Bellinger [Wed, 16 May 2012 23:05:26 +0000 (16:05 -0700)]
target: Fix bug in handling of FILEIO + block_device resize ops
This patch fixes a bug in the handling of FILEIO w/ underlying block_device
resize operations where the original fd_dev->fd_dev_size was incorrectly being
used in fd_get_blocks() for READ_CAPACITY response payloads.
This patch avoids using fd_dev->fd_dev_size for FILEIO devices with
an underlying block_device, and instead changes fd_get_blocks() to
get the sector count directly from i_size_read() as recommended by hch.
Reported-by: Christoph Hellwig <hch@lst.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Linus Torvalds [Thu, 17 May 2012 16:57:13 +0000 (09:57 -0700)]
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Pull slave-dmaengine fixes fromVinod Koul:
"fixes of cylic dma usages in slave dma drivers"
* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
dmaengine: fix cyclic dma usage
dmaengine: pl330: dont complete descriptor for cyclic dma
Linus Torvalds [Thu, 17 May 2012 16:55:58 +0000 (09:55 -0700)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost
Pull last minute virtio fixes from Michael S. Tsirkin:
"Here are a couple of last minute virtio fixes for 3.4. Hope it's not
too late yes - I might have tried too hard to make sure the fix is
well tested.
Fixes are by Amit and myself. One fixes module removal and one
suspend of a VM, the last one the handling of out of memory condition.
They are thus very low risk as most people never hit these paths, but
do fix very annoying problems for people that do use the feature.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
virtio_net: invoke softirqs after __napi_schedule
virtio: balloon: let host know of updated balloon size before module removal
virtio: console: tell host of open ports after resume from s3/s4
Linus Torvalds [Thu, 17 May 2012 16:46:07 +0000 (09:46 -0700)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc
Pull ARM: SoC fixes from Olof Johansson:
"I will stop trying to predict when we're done with fixes for a
release.
Here's another small batch of three patches for arm-soc:
- A fix for a boot time WARN_ON() due to irq domain conversion on
PRIMA2
- Fix for a regression in Tegra SMP spinup code due to swapped
register offsets
- Fixed config dependency for mv_cesa crypto driver to avoid build
breakage"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: PRIMA2: fix irq domain size and IRQ mask of internal interrupt controller
crypto: mv_cesa requires on CRYPTO_HASH to build
ARM: tegra: Fix flow controller accesses
Linus Torvalds [Thu, 17 May 2012 16:44:35 +0000 (09:44 -0700)]
Merge tag 'md-3.4-fixes' of git://neil.brown.name/md
Pull two md fixes from NeilBrown:
"One fixes a bug in the new raid10 resize code so is relevant to 3.4
only.
The other fixes a bug in the use of md by dm-raid, so is relevant to
any kernel with dm-raid support"
* tag 'md-3.4-fixes' of git://neil.brown.name/md:
MD: Add del_timer_sync to mddev_suspend (fix nasty panic)
md/raid10: set dev_sectors properly when resizing devices in array.
Linus Torvalds [Thu, 17 May 2012 16:35:17 +0000 (09:35 -0700)]
Merge branches 'perf-urgent-for-linus', 'x86-urgent-for-linus' and 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull perf, x86 and scheduler updates from Ingo Molnar.
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
tracing: Do not enable function event with enable
perf stat: handle ENXIO error for perf_event_open
perf: Turn off compiler warnings for flex and bison generated files
perf stat: Fix case where guest/host monitoring is not supported by kernel
perf build-id: Fix filename size calculation
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, kvm: KVM paravirt kernels don't check for CPUID being unavailable
x86: Fix section annotation of acpi_map_cpu2node()
x86/microcode: Ensure that module is only loaded on supported Intel CPUs
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched: Fix KVM and ia64 boot crash due to sched_groups circular linked list assumption
Will Deacon [Tue, 15 May 2012 14:51:54 +0000 (15:51 +0100)]
ARM: 7419/1: vfp: fix VFP flushing regression on sigreturn path
Commit
ff9a184c ("ARM: 7400/1: vfp: clear fpscr length and stride bits
on entry to sig handler") flushes the VFP state prior to entering a
signal handler so that a VFP operation inside the handler will trap and
force a restore of ABI-compliant registers. Reflushing and disabling VFP
on the sigreturn path is predicated on the saved thread state indicating
that VFP was used by the handler -- however for SMP platforms this is
only set on context-switch, making the check unreliable and causing VFP
register corruption in userspace since the register values are not
necessarily those restored from the sigframe.
This patch unconditionally flushes the VFP state after a signal handler.
Since we already perform the flush before the handler and the flushing
itself happens lazily, the redundant flush when VFP is not used by the
handler is essentially a nop.
Reported-by: Jon Medhurst <tixy@linaro.org>
Signed-off-by: Jon Medhurst <tixy@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Vitaly Andrianov [Tue, 15 May 2012 14:01:16 +0000 (15:01 +0100)]
ARM: 7418/1: LPAE: fix access flag setup in mem_type_table
A zero value for prot_sect in the memory types table implies that
section mappings should never be created for the memory type in question.
This is checked for in alloc_init_section().
With LPAE, we set a bit to mask access flag faults for kernel mappings.
This breaks the aforementioned (!prot_sect) check in alloc_init_section().
This patch fixes this bug by first checking for a non-zero
prot_sect before setting the PMD_SECT_AF flag.
Signed-off-by: Vitaly Andrianov <vitalya@ti.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Michael S. Tsirkin [Wed, 16 May 2012 07:57:12 +0000 (10:57 +0300)]
virtio_net: invoke softirqs after __napi_schedule
__napi_schedule might raise softirq but nothing
causes do_softirq to trigger, so it does not in fact
run. As a result,
the error message "NOHZ: local_softirq_pending 08"
sometimes occurs during boot of a KVM guest when the network service is
started and we are oom:
...
Bringing up loopback interface: [ OK ]
Bringing up interface eth0:
Determining IP information for eth0...NOHZ: local_softirq_pending 08
done.
[ OK ]
...
Further, receive queue processing might get delayed
indefinitely until some interrupt triggers:
virtio_net expected napi to be run immediately.
One way to cause do_softirq to be executed is by
invoking local_bh_enable(). As __napi_schedule is
normally called from bh or irq context, this
seems to make sense: disable bh before __napi_schedule
and enable afterwards.
In fact it's a very complicated way of calling do_softirq(),
and works since this function is only used when we are not
in interrupt context. It's not hot at all, in any ideal scenario.
Reported-by: Ulrich Obergfell <uobergfe@redhat.com>
Tested-by: Ulrich Obergfell <uobergfe@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Amit Shah [Thu, 26 Apr 2012 19:15:56 +0000 (00:45 +0530)]
virtio: balloon: let host know of updated balloon size before module removal
When the balloon module is removed, we deflate the balloon, reclaiming
all the pages that were given to the host. However, we don't update the
config values for the new balloon size, resulting in the host showing
outdated balloon values.
The size update is done after each leak and fill operation, only the
module removal case was left out.
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Amit Shah [Wed, 25 Apr 2012 09:10:39 +0000 (14:40 +0530)]
virtio: console: tell host of open ports after resume from s3/s4
If a port was open before going into one of the sleep states, the port
can continue normal operation after restore. However, the host has to
be told that the guest side of the connection is open to restore
pre-suspend state.
This wasn't noticed so far due to a bug in qemu that was fixed recently
(which marked the guest-side connection as always open).
CC: stable@vger.kernel.org # Only for 3.3
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Barry Song [Thu, 17 May 2012 03:28:55 +0000 (11:28 +0800)]
ARM: PRIMA2: fix irq domain size and IRQ mask of internal interrupt controller
the old codes will cause 3.4 kernel warning as irq domain size is wrong:
------------[ cut here ]------------
WARNING: at kernel/irq/irqdomain.c:74 irq_domain_legacy_revmap+0x24/0x48()
Modules linked in:
[<
c0013f50>] (unwind_backtrace+0x0/0xf8) from [<
c001e7d8>] (warn_slowpath_common+0x54/0x64)
[<
c001e7d8>] (warn_slowpath_common+0x54/0x64) from [<
c001e804>] (warn_slowpath_null+0x1c/0x24)
[<
c001e804>] (warn_slowpath_null+0x1c/0x24) from [<
c005c3c4>] (irq_domain_legacy_revmap+0x24/0x48)
[<
c005c3c4>] (irq_domain_legacy_revmap+0x24/0x48) from [<
c005c704>] (irq_create_mapping+0x20/0x120)
[<
c005c704>] (irq_create_mapping+0x20/0x120) from [<
c005c880>] (irq_create_of_mapping+0x7c/0xf0)
[<
c005c880>] (irq_create_of_mapping+0x7c/0xf0) from [<
c01a6c48>] (irq_of_parse_and_map+0x2c/0x34)
[<
c01a6c48>] (irq_of_parse_and_map+0x2c/0x34) from [<
c01a6c68>] (of_irq_to_resource+0x18/0x74)
[<
c01a6c68>] (of_irq_to_resource+0x18/0x74) from [<
c01a6ce8>] (of_irq_count+0x24/0x34)
[<
c01a6ce8>] (of_irq_count+0x24/0x34) from [<
c01a7220>] (of_device_alloc+0x58/0x158)
[<
c01a7220>] (of_device_alloc+0x58/0x158) from [<
c01a735c>] (of_platform_device_create_pdata+0x3c/0x80)
[<
c01a735c>] (of_platform_device_create_pdata+0x3c/0x80) from [<
c01a7468>] (of_platform_bus_create+0xc8/0x190)
[<
c01a7468>] (of_platform_bus_create+0xc8/0x190) from [<
c01a74cc>] (of_platform_bus_create+0x12c/0x190)
---[ end trace
1b75b31a2719ed32 ]---
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Jonathan Brassow [Wed, 16 May 2012 09:06:14 +0000 (04:06 -0500)]
MD: Add del_timer_sync to mddev_suspend (fix nasty panic)
Use del_timer_sync to remove timer before mddev_suspend finishes.
We don't want a timer going off after an mddev_suspend is called. This is
especially true with device-mapper, since it can call the destructor function
immediately following a suspend. This results in the removal (kfree) of the
structures upon which the timer depends - resulting in a very ugly panic.
Therefore, we add a del_timer_sync to mddev_suspend to prevent this.
Cc: stable@vger.kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 17 May 2012 00:08:45 +0000 (10:08 +1000)]
md/raid10: set dev_sectors properly when resizing devices in array.
raid10 stores dev_sectors in 'conf' separately from the one in
'mddev' because it can have a very significant effect on block
addressing and so need to be updated carefully.
However raid10_resize isn't updating it at all!
To update it correctly, we need to make sure it is a proper
multiple of the chunksize taking various details of the layout
in to account.
This calculation is currently done in setup_conf. So split it
out from there and call it from raid10_resize as well.
Then set conf->dev_sectors properly.
Signed-off-by: NeilBrown <neilb@suse.de>
Linus Torvalds [Wed, 16 May 2012 21:30:51 +0000 (14:30 -0700)]
Merge git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm powerpc fixes from Marcelo Tosatti:
"Urgent KVM PPC updates, quoting Alexander Graf:
There are a few bugs in 3.4 that really should be fixed before
people can be all happy and fuzzy about KVM on PowerPC. These fixes
are:
* fix POWER7 bare metal with PR=y
* fix deadlock on HV=y book3s_64 mode in low memory cases
* fix invalid MMU scope of PR=y mode on book3s_64, possibly eading
to memory corruption"
* git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: PPC: Book3S HV: Fix bug leading to deadlock in guest HPT updates
powerpc/kvm: Fix VSID usage in 64-bit "PR" KVM
KVM: PPC: Book3S: PR: Fix hsrr code
KVM: PPC: Fix PR KVM on POWER7 bare metal
KVM: PPC: Book3S: PR: Handle EMUL_ASSIST
Linus Torvalds [Wed, 16 May 2012 21:29:45 +0000 (14:29 -0700)]
Merge tag 'sound-3.4' of git://git./linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A few last-minute regression fixes for 3.4 final kernel. All trivial,
and Cc'ed to stable kernel."
* tag 'sound-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ASoC: wm8994: Fix AIF2ADC power down
ALSA: hda/idt - Fix power-map for speaker-pins with some HP laptops
ASoC: cs42l73: Sync digital mixer kcontrols to allow for 0dB
Linus Torvalds [Wed, 16 May 2012 21:26:05 +0000 (14:26 -0700)]
Merge tag 'rproc-for-linus' of git://git./linux/kernel/git/ohad/remoteproc
Pull remoteproc fix from Ohad Ben-Cohen:
"Fix a nasty off-by-one remoteproc bug which leaks memory when a remote
processor is shut down and, on certain circumstances, can indirectly
prevent it from being reloaded."
* tag 'rproc-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc:
remoteproc: fix off-by-one bug in __rproc_free_vrings
Linus Torvalds [Wed, 16 May 2012 21:22:38 +0000 (14:22 -0700)]
Merge git://git.samba.org/sfrench/cifs-2.6
Pull CIFS fix from Jeff Layton
* git://git.samba.org/sfrench/cifs-2.6:
cifs: fix misspelling of "forcedirectio"
Linus Torvalds [Wed, 16 May 2012 21:21:41 +0000 (14:21 -0700)]
Merge branch 'stable' of git://git./linux/kernel/git/cmetcalf/linux-tile
Pull two Tile arch fixes from Chris Metcalf:
"These are both bug-fixes, one to avoid some issues in how we invoke
the "pending userspace work" flags on return to userspace, and the
other to provide the same signal handler arguments for tilegx32 that
we do for tilegx64."
* 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
arch/tile: apply commit
74fca9da0 to the compat signal handling as well
arch/tile: fix up some issues in calling do_work_pending()
Linus Torvalds [Wed, 16 May 2012 20:14:52 +0000 (13:14 -0700)]
Merge git://git./linux/kernel/git/davem/net
Pull networking tree from David Miller:
1) ptp_pch driver build broke during this merge window due to missing
slab.h header, fix from Geery Uytterhoeven.
2) If ipset passes in a bogus hash table size we crash because the size
is not validated properly. Compounding this, gcc-4.7 can miscompile
ipset such that even when the user specifies legitimate parameters
the tool passes in an out-of-range size to the kernel.
Fix from Jozsef Kadlecsik.
3) Users have reported that the netdev watchdog can trigger with pch_gbe
devices, and it turns out this is happening because of races in the
TX path of the driver leading to the transmitter hanging. Fix from
Eric Dumazet, reported and tested by Andy Cress.
4) Novatel USB551L devices match the generic class entries for the cdc
ethernet USB driver, but they don't work because they have generic
descriptors and thus need FLAG_WWAN to function properly.
Add the necessary ID table entry to fix this, from Dan Williams.
5) A recursive locking fix in the USBNET driver added a new problem, in
that packet list traversal is now racy and we can thus access
unlinked SKBs and crash.
Avoid this situation by adding some extra state tracking, from Ming
Lei.
6) The rtlwifi conversion to asynchronous firmware loading is racy, fix
by reordering the probe procedure. From Larry Finger.
Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=43187
7) Fix regressions with bluetooth keyboards by notifying userland
properly when the security level changes, from Gustavo Padovan.
8) Bluetooth needs to make sure device connected events are emitted
before other kinds of events, otherwise userspace will think there is
no baseband link yet and therefore abort the sockets associated with
that connection.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
netfilter: ipset: fix hash size checking in kernel
ptp_pch: Add missing #include <linux/slab.h>
pch_gbe: fix transmit races
cdc_ether: add Novatel USB551L device IDs for FLAG_WWAN
usbnet: fix skb traversing races during unlink(v2)
Bluetooth: mgmt: Fix device_connected sending order
Bluetooth: notify userspace of security level change
rtlwifi: fix for race condition when firmware is cached
Chris Metcalf [Wed, 16 May 2012 18:54:20 +0000 (14:54 -0400)]
arch/tile: apply commit
74fca9da0 to the compat signal handling as well
This passes siginfo and mcontext to tilegx32 signal handlers that
don't have SA_SIGINFO set just as we have been doing for tilegx64.
Cc: stable@vger.kernel.org
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Chris Metcalf [Sat, 28 Apr 2012 22:51:43 +0000 (18:51 -0400)]
arch/tile: fix up some issues in calling do_work_pending()
First, we were at risk of handling thread-info flags, in particular
do_signal(), when returning from kernel space. This could happen
after a failed kernel_execve(), or when forking a kernel thread.
The fix is to test in do_work_pending() for user_mode() and return
immediately if so; we already had this test for one of the flags,
so I just hoisted it to the top of the function.
Second, if a ptraced process updated the callee-saved registers
in the ptregs struct and then processed another thread-info flag, we
would overwrite the modifications with the original callee-saved
registers. To fix this, we add a register to note if we've already
saved the registers once, and skip doing it on additional passes
through the loop. To avoid a performance hit from the couple of
extra instructions involved, I modified the GET_THREAD_INFO() macro
to be guaranteed to be one instruction, then bundled it with adjacent
instructions, yielding an overall net savings.
Reported-By: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Jozsef Kadlecsik [Mon, 14 May 2012 01:47:01 +0000 (01:47 +0000)]
netfilter: ipset: fix hash size checking in kernel
The hash size must fit both into u32 (jhash) and the max value of
size_t. The missing checking could lead to kernel crash, bug reported
by Seblu.
Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Geert Uytterhoeven [Wed, 16 May 2012 01:50:17 +0000 (01:50 +0000)]
ptp_pch: Add missing #include <linux/slab.h>
drivers/ptp/ptp_pch.c: In function 'pch_remove':
drivers/ptp/ptp_pch.c:576:2: error: implicit declaration of function 'kfree' [-Werror=implicit-function-declaration]
drivers/ptp/ptp_pch.c: In function 'pch_probe':
drivers/ptp/ptp_pch.c:587:2: error: implicit declaration of function 'kzalloc' [-Werror=implicit-function-declaration]
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jeff Layton [Wed, 16 May 2012 11:12:26 +0000 (07:12 -0400)]
cifs: fix misspelling of "forcedirectio"
...and add a "directio" synonym since that's what the manpage has
always advertised.
Acked-by: Sachin Prabhu <sprabhu@redhat.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Russell King [Wed, 16 May 2012 14:19:20 +0000 (15:19 +0100)]
ARM: prevent VM_GROWSDOWN mmaps extending below FIRST_USER_ADDRESS
Cc: <stable@vger.kernel.org>
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Arnd Bergmann [Wed, 16 May 2012 13:47:11 +0000 (15:47 +0200)]
Merge branch 'for-3.4/fixes-for-final' of git://git./linux/kernel/git/swarren/linux-tegra into fixes
* 'for-3.4/fixes-for-final' of git://git.kernel.org/pub/scm/linux/kernel/git/swarren/linux-tegra:
ARM: tegra: Fix flow controller accesses
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Arnd Bergmann [Wed, 16 May 2012 13:44:34 +0000 (15:44 +0200)]
Merge branch 'marvell_fixes_for_v3.4' of git://git.infradead.org/users/jcooper/linux into fixes
* 'marvell_fixes_for_v3.4' of git://git.infradead.org/users/jcooper/linux:
crypto: mv_cesa requires on CRYPTO_HASH to build
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Paul Mackerras [Wed, 9 May 2012 23:49:24 +0000 (23:49 +0000)]
KVM: PPC: Book3S HV: Fix bug leading to deadlock in guest HPT updates
When handling the H_BULK_REMOVE hypercall, we were forgetting to
invalidate and unlock the hashed page table entry (HPTE) in the case
where the page had been paged out. This fixes it by clearing the
first doubleword of the HPTE in that case.
This fixes a regression introduced in commit
a92bce95f0 ("KVM: PPC:
Book3S HV: Keep HPTE locked when invalidating"). The effect of the
regression is that the host kernel will sometimes hang when under
memory pressure.
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Alexander Graf <agraf@suse.de>
Benjamin Herrenschmidt [Fri, 23 Mar 2012 00:21:14 +0000 (11:21 +1100)]
powerpc/kvm: Fix VSID usage in 64-bit "PR" KVM
The code forgot to scramble the VSIDs the way we normally do
and was basically using the "proto VSID" directly with the MMU.
This means that in practice, KVM used random VSIDs that could
collide with segments used by other user space programs.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[agraf: simplify ppc32 case]
Signed-off-by: Alexander Graf <agraf@suse.de>
Alexander Graf [Thu, 10 May 2012 01:58:50 +0000 (03:58 +0200)]
KVM: PPC: Book3S: PR: Fix hsrr code
When jumping back into the kernel to code that knows that it would be
using HSRR registers instead of SRR registers, we need to make sure we
pass it all information on where to jump to in HSRR registers.
Unfortunately, we used r10 to store the information to distinguish between
the HSRR and SRR case. That register got clobbered in between though,
rendering the later comparison invalid.
Instead, let's use cr1 to store this information. That way we don't
need yet another register and everyone's happy.
This fixes PR KVM on POWER7 bare metal for me.
Signed-off-by: Alexander Graf <agraf@suse.de>
Alexander Graf [Fri, 27 Apr 2012 14:33:35 +0000 (16:33 +0200)]
KVM: PPC: Fix PR KVM on POWER7 bare metal
When running on a system that is HV capable, some interrupts use HSRR
SPRs instead of the normal SRR SPRs. These are also used in the Linux
handlers to jump back to code after an interrupt got processed.
Unfortunately, in our "jump back to the real host handler after we've
done the context switch" code, we were only setting the SRR SPRs,
rendering Linux to jump back to some invalid IP after it's processed
the interrupt.
This fixes random crashes on p7 opal mode with PR KVM for me.
Signed-off-by: Alexander Graf <agraf@suse.de>
Alexander Graf [Thu, 10 May 2012 01:54:58 +0000 (03:54 +0200)]
KVM: PPC: Book3S: PR: Handle EMUL_ASSIST
In addition to normal "priviledged instruction" traps, we can also receive
"emulation assist" traps on newer hardware that has the HV bit set.
Handle that one the same way as a privileged instruction, including the
instruction fetching. That way we don't execute old instructions that we
happen to still leave in that field when an emul assist trap comes.
This fixes -M mac99 / -M g3beige on p7 bare metal for me.
Signed-off-by: Alexander Graf <agraf@suse.de>
James Bottomley [Wed, 16 May 2012 10:10:27 +0000 (11:10 +0100)]
[PARISC] fix panic on prefetch(NULL) on PA7300LC
Due to an errata, the PA7300LC generates a TLB miss interruption even on the
prefetch instruction. This means that prefetch(NULL), which is supposed to be
a nop on linux actually generates a NULL deref fault. Fix this by testing the
address of prefetch against NULL before doing the prefetch.
Cc: stable@vger.kernel.org
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
John David Anglin [Wed, 16 May 2012 09:14:52 +0000 (10:14 +0100)]
[PARISC] fix crash in flush_icache_page_asm on PA1.1
As pointed out by serveral people, PA1.1 only has a type 26 instruction
meaning that the space register must be explicitly encoded. Not giving an
explicit space means that the compiler uses the type 24 version which is PA2.0
only resulting in an illegal instruction crash.
This regression was caused by
commit
f311847c2fcebd81912e2f0caf8a461dec28db41
Author: James Bottomley <James.Bottomley@HansenPartnership.com>
Date: Wed Dec 22 10:22:11 2010 -0600
parisc: flush pages through tmpalias space
Reported-by: Helge Deller <deller@gmx.de>
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: stable@vger.kernel.org #2.6.39+
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
James Bottomley [Tue, 15 May 2012 10:04:19 +0000 (11:04 +0100)]
[PARISC] fix PA1.1 oops on boot
All PA1.1 systems have been oopsing on boot since
commit
f311847c2fcebd81912e2f0caf8a461dec28db41
Author: James Bottomley <James.Bottomley@HansenPartnership.com>
Date: Wed Dec 22 10:22:11 2010 -0600
parisc: flush pages through tmpalias space
because a PA2.0 instruction was accidentally introduced into the PA1.1 TLB
insertion interruption path when it was consolidated with the do_alias macro.
Fix the do_alias macro only to use PA2.0 instructions if compiled for 64 bit.
Cc: stable@vger.kernel.org #2.6.39+
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
David S. Miller [Wed, 16 May 2012 05:03:54 +0000 (01:03 -0400)]
Merge branch 'for-davem' of git://git./linux/kernel/git/linville/wireless
John Linville says:
Here are three more fixes that some of my developers are desperate to
see included in 3.4...
Johan Hedberg went to some length justifyng the inclusion of these two
Bluetooth fixes:
"The device_connected fix should be quite self-explanatory, but it's
actually a wider issue than just for keyboards. All profiles that do
incoming connection authorization (e.g. headsets) will break without it
with specific hardware. The reason it wasn't caught earlier is that it
only occurs with specific Bluetooth adapters.
As for the security level patch, this fixes L2CAP socket based security
level elevation during a connection. The HID profile needs this (for
keyboards) and it is the only way to achieve the security level
elevation when using the management interface to talk to the kernel
(hence the management enabling patch being the one that exposes this"
The rtlwifi fix addresses a regression related to firmware loading,
as described in kernel.org bug 43187. It basically just moves a hunk
of code to a more appropriate place.
Signed-off-by: David S. Miller <davem@davemloft.net>
Srivatsa S. Bhat [Tue, 15 May 2012 19:02:37 +0000 (00:32 +0530)]
mn10300/CPU hotplug: Add missing call to notify_cpu_starting()
The scheduler depends on receiving the CPU_STARTING notification, without
which we end up into a lot of trouble. So add the missing call to
notify_cpu_starting() in the bringup code.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Srivatsa S. Bhat [Tue, 15 May 2012 19:02:17 +0000 (00:32 +0530)]
parisc/CPU hotplug: Add missing call to notify_cpu_starting()
The scheduler depends on receiving the CPU_STARTING notification, without
which we end up into a lot of trouble. So add the missing call to
notify_cpu_starting() in the bringup code.
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Acked-and-Tested-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-and-Tested-by: Tobias Ulmer <tobiasu@tmux.org>
Tested-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
John W. Linville [Tue, 15 May 2012 20:38:00 +0000 (16:38 -0400)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless into for-davem