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Josef Bacik [Thu, 6 Sep 2012 20:47:00 +0000 (16:47 -0400)]
Btrfs: wait on async pages when shrinking delalloc
Mitch reported a problem where you could get an ENOSPC error when untarring
a kernel git tree onto a 16gb file system with compress-force=zlib. This is
because compression is a huge pain, it will return from ->writepages()
without having actually created any ordered extents. To get around this we
check to see if the async submit counter is up, and if it is wait until it
drops to 0 before doing our normal ordered wait dance. With this patch I
can now untar a kernel git tree onto a 16gb file system without getting
ENOSPC errors. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Liu Bo [Thu, 6 Sep 2012 01:10:51 +0000 (19:10 -0600)]
Btrfs: use flag EXTENT_DEFRAG for snapshot-aware defrag
We're going to use this flag EXTENT_DEFRAG to indicate which range
belongs to defragment so that we can implement snapshow-aware defrag:
We set the EXTENT_DEFRAG flag when dirtying the extents that need
defragmented, so later on writeback thread can differentiate between
normal writeback and writeback started by defragmentation.
Original-Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Tsutomu Itoh [Thu, 6 Sep 2012 06:18:10 +0000 (00:18 -0600)]
Btrfs: check return value of ulist_alloc() properly
ulist_alloc() has the possibility of returning NULL.
So, it is necessary to check the return value.
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Tsutomu Itoh [Thu, 6 Sep 2012 09:08:59 +0000 (03:08 -0600)]
Btrfs: fix error handling in delete_block_group_cache()
btrfs_iget() never return NULL.
So, NULL check is unnecessary.
Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Miao Xie [Thu, 6 Sep 2012 10:04:57 +0000 (04:04 -0600)]
Btrfs: fix wrong size for the reservation when doing, file pre-allocation.
When we ran fsstress(a program in xfstests), the filesystem hung up when it
is full. It was because the space reserved in btrfs_fallocate() was wrong,
btrfs_fallocate() just used the size of the pre-allocation to reserve the
space, didn't took the block size aligning into account, so the size of
the reserved space was less than the allocated space, it caused the over
reserve problem and made the filesystem hung up when invoking cow_file_range().
Fix it.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Miao Xie [Thu, 6 Sep 2012 10:04:44 +0000 (04:04 -0600)]
Btrfs: output more information when aborting a unused transaction handle
Though we dump the stack information when aborting a unused transaction
handle, we don't know the correct place where we decide to abort the
transaction handle if one function has several place where the transaction
abort function is invoked and jumps to the same place after this call.
And beside that we also don't know the reason why we jump to abort
the current handle. So I modify the transaction abort function and make
it output the function name, line and error information.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Miao Xie [Thu, 6 Sep 2012 10:04:27 +0000 (04:04 -0600)]
Btrfs: fix unprotected ->log_batch
We forget to protect ->log_batch when syncing a file, this patch fix
this problem by atomic operation. And ->log_batch is used to check
if there are parallel sync operations or not, so it is unnecessary to
reset it to 0 after the sync operation of the current log tree complete.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Miao Xie [Thu, 6 Sep 2012 10:03:56 +0000 (04:03 -0600)]
Btrfs: fix wrong size for the reservation of the, snapshot creation
We should insert/update 6 items(root ref, root backref, dir item, dir index,
root item and parent inode) when creating a snapshot, not 5 items, fix it.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Miao Xie [Thu, 6 Sep 2012 10:03:32 +0000 (04:03 -0600)]
Btrfs: fix the snapshot that should not exist
The snapshot should be the image of the fs tree before it was created,
so the metadata of the snapshot should not exist in the its tree. But now, we
found the directory item and directory name index is in both the snapshot tree
and the fs tree. It introduces some problems and makes the users feel strange:
# mkfs.btrfs /dev/sda1
# mount /dev/sda1 /mnt
# mkdir /mnt/1
# cd /mnt/1
# btrfs subvolume snapshot /mnt snap0
# ls -a /mnt/1/snap0/1
. .. [no other file/dir]
# ll /mnt/1/snap0/
total 0
drwxr-xr-x 1 root root 10 Ju1 24 12:11 1
^^^
There is no file/dir in it, but it's size is 10
# cd /mnt/1/snap0/1/snap0
[Enter a unexisted directory successfully...]
There is nothing in the directory 1 in snap0, but btrfs told the length of
this directory is 10. Beside that, we can enter an unexisted directory, it is
very strange to the users.
# btrfs subvolume snapshot /mnt/1/snap0 /mnt/snap1
# ll /mnt/1/snap0/1/
total 0
[None]
# ll /mnt/snap1/1/
total 0
drwxr-xr-x 1 root root 0 Ju1 24 12:14 snap0
And the source of snap1 did have any directory in Directory 1, but snap1 have
a snap0, it is different between the source and the snapshot.
So I think we should insert directory item and directory name index and update
the parent inode as the last step of snapshot creation, and do not leave the
useless metadata in the file tree.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Miao Xie [Thu, 6 Sep 2012 10:02:28 +0000 (04:02 -0600)]
Btrfs: add a new "type" field into the block reservation structure
Sometimes we need choose the method of the reservation according to the type
of the block reservation, such as the reservation for the delayed inode update.
Now we identify the type just by comparing the address of the reservation
variants, it is very ugly if it is a temporary one because we need compare it
with all the common reservation variants. So we add a new "type" field to keep
the type the reservation variants.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Miao Xie [Thu, 6 Sep 2012 10:01:51 +0000 (04:01 -0600)]
Btrfs: use a slab for ordered extents allocation
The ordered extent allocation is in the fast path of the IO, so use a slab
to improve the speed of the allocation.
"Size of the struct is 280, so this will fall into the size-512 bucket,
giving 8 objects per page, while own slab will pack 14 objects into a page.
Another benefit I see is to check for leaked objects when the module is
removed (and the cache destroy takes place)."
-- David Sterba
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Miao Xie [Thu, 6 Sep 2012 10:01:21 +0000 (04:01 -0600)]
Btrfs: fix file extent discount problem in the, snapshot
If a snapshot is created while we are writing some data into the file,
the i_size of the corresponding file in the snapshot will be wrong, it will
be beyond the end of the last file extent. And btrfsck will report:
root 256 inode 257 errors 100
Steps to reproduce:
# mkfs.btrfs <partition>
# mount <partition> <mnt>
# cd <mnt>
# dd if=/dev/zero of=tmpfile bs=4M count=1024 &
# for ((i=0; i<4; i++))
> do
> btrfs sub snap . $i
> done
This because the algorithm of disk_i_size update is wrong. Though there are
some ordered extents behind the current one which we use to update disk_i_size,
it doesn't mean those extents will be dealt with in the same transaction. So
We shouldn't use the offset of those extents to update disk_i_size. Or we will
get the wrong i_size in the snapshot.
We fix this problem by recording the max real i_size. If we find there is a
ordered extent which is in front of the current one and doesn't complete, we
will record the end of the current one into that ordered extent. Surely, if
the current extent holds the end of other extent(it must be greater than
the current one because it is behind the current one), we will record the
number that the current extent holds. In this way, we can exclude the ordered
extents that may not be dealth with in the same transaction, and be easy to
know the real disk_i_size.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Miao Xie [Thu, 6 Sep 2012 10:00:57 +0000 (04:00 -0600)]
Btrfs: fix full backref problem when inserting shared block reference
If we create several snapshots at the same time, the following BUG_ON() will be
triggered.
kernel BUG at fs/btrfs/extent-tree.c:6047!
Steps to reproduce:
# mkfs.btrfs <partition>
# mount <partition> <mnt>
# cd <mnt>
# for ((i=0;i<2400;i++)); do touch long_name_to_make_tree_more_deep$i; done
# for ((i=0; i<4; i++))
> do
> mkdir $i
> for ((j=0; j<200; j++))
> do
> btrfs sub snap . $i/$j
> done &
> done
The reason is:
Before transaction commit, some operations changed the fs tree and new tree
blocks were allocated because of COW. We used the implicit non-shared back
reference for those newly allocated tree blocks because they were not shared by
two or more trees.
And then we created the first snapshot for the fs tree, according to the back
reference rules, we also used implicit back refs for the child tree blocks of
the root node of the fs tree, now those child nodes/leaves were shared by two
trees.
Then We didn't deal with the delayed references, and continued to change the fs
tree(created the second snapshot and inserted the dir item of the new snapshot
into the fs tree). According to the rules of the back reference, we added full
back refs for those tree blocks whose parents have be shared by two trees.
Now some newly allocated tree blocks had two types of the references.
As we know, the delayed reference system handles these delayed references from
back to front, and the full delayed reference is inserted after the implicit
ones. So when we dealt with the back references of those newly allocated tree
blocks, the full references was dealt with at first. And if the first reference
is a shared back reference and the tree block that the reference points to is
newly allocated, It would be considered as a tree block which is shared by two
or more trees when it is allocated and should be a full back reference not a
implicit one, the flag of its reference also should be set to FULL_BACKREF.
But in fact, it was a non-shared tree block with a implicit reference at
beginning, so it was not compulsory to set the flags to FULL_BACKREF. So BUG_ON
was triggered.
We have several methods to fix this bug:
1. deal with delayed references after the snapshot is created and before we
change the source tree of the snapshot. This is the easiest and safest way.
2. modify the sort method of the delayed reference tree, make the full delayed
references be inserted before the implicit ones. It is also very easy, but
I don't know if it will introduce some problems or not.
3. modify select_delayed_ref() and make it select the implicit delayed reference
at first. This way is not so good because it may wastes CPU time if we have
lots of delayed references.
4. set the flags to FULL_BACKREF, this method is a little complex comparing with
the 1st way.
I chose the 1st way to fix it.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Miao Xie [Thu, 6 Sep 2012 10:00:32 +0000 (04:00 -0600)]
Btrfs: fix error path in create_pending_snapshot()
This patch fixes the following problem:
- If we failed to deal with the delayed dir items, we should abort transaction,
just as its comment said. Fix it.
- If root reference or root back reference insertion failed, we should
abort transaction. Fix it.
- Fix the double free problem of pending->inherit.
- Do not restore the trans->rsv if we doesn't change it.
- make the error path more clearly.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Wei Yongjun [Sun, 2 Sep 2012 13:44:51 +0000 (07:44 -0600)]
Btrfs: fix possible memory leak in scrub_setup_recheck_block()
bbio has been malloced in btrfs_map_block() and should be
freed before leaving from the error handling cases.
spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Josef Bacik [Fri, 31 Aug 2012 00:06:49 +0000 (20:06 -0400)]
Btrfs: btrfs_drop_extent_cache should never fail
I noticed this when I was doing the fsync stuff, we allocate split extents if we
drop an extent range that is in the middle of an existing extent. This BUG()'s
if we fail to allocate memory, but the fact is this is just a cache, we will
just regenerate the cache if we need it, the important part is that we free the
range we are given. This can be done without allocations, so if we fail to
allocate splits just skip the splitting stage and free our em and look for more
extents to drop. This also makes btrfs_drop_extent_cache a void since nobody
was checking the return value anyway. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Sage Weil [Thu, 30 Aug 2012 22:26:17 +0000 (16:26 -0600)]
Btrfs: do not take cleanup_work_sem in btrfs_run_delayed_iputs()
Josef has suggested that this is not necessary. Removing it also avoids
this lockdep splat (after the new sb_internal locking stuff was added):
[ 604.090449] ======================================================
[ 604.114819] [ INFO: possible circular locking dependency detected ]
[ 604.139262]
3.6.0-rc2-ceph-00144-g463b030 #1 Not tainted
[ 604.162193] -------------------------------------------------------
[ 604.186139] btrfs-cleaner/6669 is trying to acquire lock:
[ 604.209555] (sb_internal#2){.+.+..}, at: [<
ffffffffa0042b84>] start_transaction+0x124/0x430 [btrfs]
[ 604.257100]
[ 604.257100] but task is already holding lock:
[ 604.300366] (&fs_info->cleanup_work_sem){.+.+..}, at: [<
ffffffffa0048002>] btrfs_run_delayed_iputs+0x72/0x130 [btrfs]
[ 604.352989]
[ 604.352989] which lock already depends on the new lock.
[ 604.352989]
[ 604.427104]
[ 604.427104] the existing dependency chain (in reverse order) is:
[ 604.478493]
[ 604.478493] -> #1 (&fs_info->cleanup_work_sem){.+.+..}:
[ 604.529313] [<
ffffffff810b2c82>] lock_acquire+0xa2/0x140
[ 604.559621] [<
ffffffff81632b69>] down_read+0x39/0x4e
[ 604.589382] [<
ffffffffa004db98>] btrfs_lookup_dentry+0x218/0x550 [btrfs]
[ 604.596161] btrfs: unlinked 1 orphans
[ 604.675002] [<
ffffffffa006aadd>] create_subvol+0x62d/0x690 [btrfs]
[ 604.708859] [<
ffffffffa006d666>] btrfs_mksubvol.isra.52+0x346/0x3a0 [btrfs]
[ 604.772466] [<
ffffffffa006d7f2>] btrfs_ioctl_snap_create_transid+0x132/0x190 [btrfs]
[ 604.842245] [<
ffffffffa006d8ae>] btrfs_ioctl_snap_create+0x5e/0x80 [btrfs]
[ 604.912852] [<
ffffffffa00708ae>] btrfs_ioctl+0x138e/0x1990 [btrfs]
[ 604.951888] [<
ffffffff8118e9b8>] do_vfs_ioctl+0x98/0x560
[ 604.989961] [<
ffffffff8118ef11>] sys_ioctl+0x91/0xa0
[ 605.026628] [<
ffffffff8163d569>] system_call_fastpath+0x16/0x1b
[ 605.064404]
[ 605.064404] -> #0 (sb_internal#2){.+.+..}:
[ 605.126832] [<
ffffffff810b25e8>] __lock_acquire+0x1ac8/0x1b90
[ 605.163671] [<
ffffffff810b2c82>] lock_acquire+0xa2/0x140
[ 605.200228] [<
ffffffff8117dac6>] __sb_start_write+0xc6/0x1b0
[ 605.236818] [<
ffffffffa0042b84>] start_transaction+0x124/0x430 [btrfs]
[ 605.274029] [<
ffffffffa00431a3>] btrfs_start_transaction+0x13/0x20 [btrfs]
[ 605.340520] [<
ffffffffa004ccfa>] btrfs_evict_inode+0x19a/0x330 [btrfs]
[ 605.378720] [<
ffffffff811972c8>] evict+0xb8/0x1c0
[ 605.416057] [<
ffffffff811974d5>] iput+0x105/0x210
[ 605.452373] [<
ffffffffa0048082>] btrfs_run_delayed_iputs+0xf2/0x130 [btrfs]
[ 605.521627] [<
ffffffffa003b5e1>] cleaner_kthread+0xa1/0x120 [btrfs]
[ 605.560520] [<
ffffffff810791ee>] kthread+0xae/0xc0
[ 605.598094] [<
ffffffff8163e744>] kernel_thread_helper+0x4/0x10
[ 605.636499]
[ 605.636499] other info that might help us debug this:
[ 605.636499]
[ 605.736504] Possible unsafe locking scenario:
[ 605.736504]
[ 605.801931] CPU0 CPU1
[ 605.835126] ---- ----
[ 605.867093] lock(&fs_info->cleanup_work_sem);
[ 605.898594] lock(sb_internal#2);
[ 605.931954] lock(&fs_info->cleanup_work_sem);
[ 605.965359] lock(sb_internal#2);
[ 605.994758]
[ 605.994758] *** DEADLOCK ***
[ 605.994758]
[ 606.075281] 2 locks held by btrfs-cleaner/6669:
[ 606.104528] #0: (&fs_info->cleaner_mutex){+.+...}, at: [<
ffffffffa003b5d5>] cleaner_kthread+0x95/0x120 [btrfs]
[ 606.165626] #1: (&fs_info->cleanup_work_sem){.+.+..}, at: [<
ffffffffa0048002>] btrfs_run_delayed_iputs+0x72/0x130 [btrfs]
[ 606.231297]
[ 606.231297] stack backtrace:
[ 606.287723] Pid: 6669, comm: btrfs-cleaner Not tainted
3.6.0-rc2-ceph-00144-g463b030 #1
[ 606.347823] Call Trace:
[ 606.376184] [<
ffffffff8162a77c>] print_circular_bug+0x1fb/0x20c
[ 606.409243] [<
ffffffff810b25e8>] __lock_acquire+0x1ac8/0x1b90
[ 606.441343] [<
ffffffffa0042b84>] ? start_transaction+0x124/0x430 [btrfs]
[ 606.474583] [<
ffffffff810b2c82>] lock_acquire+0xa2/0x140
[ 606.505934] [<
ffffffffa0042b84>] ? start_transaction+0x124/0x430 [btrfs]
[ 606.539429] [<
ffffffff8132babd>] ? do_raw_spin_unlock+0x5d/0xb0
[ 606.571719] [<
ffffffff8117dac6>] __sb_start_write+0xc6/0x1b0
[ 606.603498] [<
ffffffffa0042b84>] ? start_transaction+0x124/0x430 [btrfs]
[ 606.637405] [<
ffffffffa0042b84>] ? start_transaction+0x124/0x430 [btrfs]
[ 606.670165] [<
ffffffff81172e75>] ? kmem_cache_alloc+0xb5/0x160
[ 606.702144] [<
ffffffffa0042b84>] start_transaction+0x124/0x430 [btrfs]
[ 606.735562] [<
ffffffffa00256a6>] ? block_rsv_add_bytes+0x56/0x80 [btrfs]
[ 606.769861] [<
ffffffffa00431a3>] btrfs_start_transaction+0x13/0x20 [btrfs]
[ 606.804575] [<
ffffffffa004ccfa>] btrfs_evict_inode+0x19a/0x330 [btrfs]
[ 606.838756] [<
ffffffff81634c6b>] ? _raw_spin_unlock+0x2b/0x40
[ 606.872010] [<
ffffffff811972c8>] evict+0xb8/0x1c0
[ 606.903800] [<
ffffffff811974d5>] iput+0x105/0x210
[ 606.935416] [<
ffffffffa0048082>] btrfs_run_delayed_iputs+0xf2/0x130 [btrfs]
[ 606.970510] [<
ffffffffa003b5d5>] ? cleaner_kthread+0x95/0x120 [btrfs]
[ 607.005648] [<
ffffffffa003b5e1>] cleaner_kthread+0xa1/0x120 [btrfs]
[ 607.040724] [<
ffffffffa003b540>] ? btrfs_destroy_delayed_refs.isra.102+0x220/0x220 [btrfs]
[ 607.104740] [<
ffffffff810791ee>] kthread+0xae/0xc0
[ 607.137119] [<
ffffffff810b379d>] ? trace_hardirqs_on+0xd/0x10
[ 607.169797] [<
ffffffff8163e744>] kernel_thread_helper+0x4/0x10
[ 607.202472] [<
ffffffff81635430>] ? retint_restore_args+0x13/0x13
[ 607.235884] [<
ffffffff81079140>] ? flush_kthread_work+0x1a0/0x1a0
[ 607.268731] [<
ffffffff8163e740>] ? gs_change+0x13/0x13
Signed-off-by: Sage Weil <sage@inktank.com>
Sage Weil [Thu, 30 Aug 2012 22:26:16 +0000 (16:26 -0600)]
Btrfs: set journal_info in async trans commit worker
We expect current->journal_info to point to the trans handle we are
committing.
Signed-off-by: Sage Weil <sage@inktank.com>
Sage Weil [Thu, 30 Aug 2012 22:26:15 +0000 (16:26 -0600)]
Btrfs: pass lockdep rwsem metadata to async commit transaction
The freeze rwsem is taken by sb_start_intwrite() and dropped during the
commit_ or end_transaction(). In the async case, that happens in a worker
thread. Tell lockdep the calling thread is releasing ownership of the
rwsem and the async thread is picking it up.
XFS plays the same trick in fs/xfs/xfs_aops.c.
Signed-off-by: Sage Weil <sage@inktank.com>
Josef Bacik [Wed, 29 Aug 2012 18:27:18 +0000 (14:27 -0400)]
Btrfs: add hole punching
This patch adds hole punching via fallocate. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Josef Bacik [Wed, 29 Aug 2012 16:24:27 +0000 (12:24 -0400)]
Btrfs: remove unused hint byte argument for btrfs_drop_extents
I audited all users of btrfs_drop_extents and found that nobody actually uses
the hint_byte argument. I'm sure it was used for something at some point but
it's not used now, and the way the pinning works the disk bytenr would never be
immediately useful anyway so lets just remove it. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Liu Bo [Wed, 29 Aug 2012 07:07:56 +0000 (01:07 -0600)]
Btrfs: check if an inode has no checksum when logging it
This is based on Josef's "Btrfs: turbo charge fsync".
If an inode is a BTRFS_INODE_NODATASUM one, we don't need to look for csum
items any more.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Liu Bo [Wed, 29 Aug 2012 07:07:55 +0000 (01:07 -0600)]
Btrfs: fix a bug in checking whether a inode is already in log
This is based on Josef's "Btrfs: turbo charge fsync".
The current btrfs checks if an inode is in log by comparing
root's last_log_commit to inode's last_sub_trans[2].
But the problem is that this root->last_log_commit is shared among
inodes.
Say we have N inodes to be logged, after the first inode,
root's last_log_commit is updated and the N-1 remained files will
be skipped.
This fixes the bug by keeping a local copy of root's last_log_commit
inside each inode and this local copy will be maintained itself.
[1]: we regard each log transaction as a subset of btrfs's transaction,
i.e. sub_trans
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Miao Xie [Wed, 29 Aug 2012 04:13:02 +0000 (22:13 -0600)]
Btrfs: fix wrong orphan count of the fs/file tree
If we add a new orphan item, we should increase the atomic counter,
not decrease it. Fix it.
Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Liu Bo [Mon, 27 Aug 2012 16:52:20 +0000 (10:52 -0600)]
Btrfs: improve fsync by filtering extents that we want
This is based on Josef's "Btrfs: turbo charge fsync".
The above Josef's patch performs very good in random sync write test,
because we won't have too much extents to merge.
However, it does not performs good on the test:
dd if=/dev/zero of=foobar bs=4k count=12500 oflag=sync
The reason is when we do sequencial sync write, we need to merge the
current extent just with the previous one, so that we can get accumulated
extents to log:
A(4k) --> AA(8k) --> AAA(12k) --> AAAA(16k) ...
So we'll have to flush more and more checksum into log tree, which is the
bottleneck according to my tests.
But we can avoid this by telling fsync the real extents that are needed
to be logged.
With this, I did the above dd sync write test (size=50m),
w/o (orig) w/ (josef's) w/ (this)
SATA 104KB/s 109KB/s 121KB/s
ramdisk 1.5MB/s 1.5MB/s 10.7MB/s (613%)
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Josef Bacik [Mon, 27 Aug 2012 21:48:15 +0000 (17:48 -0400)]
Btrfs: do not needlessly restart the transaction for enospc
We will stop and restart a transaction every time we move to a different leaf
when truncating a file. This is for enospc reasons, but really we could
probably get away with doing this a little better by actually working until we
hit an ENOSPC. So add a ->failfast flag to the block_rsv and set it when we do
truncates which will fail as soon as the block rsv runs out of space, and then
at that point we can stop and restart the transaction and refill the block rsv
and carry on. This will make rm'ing of a file with lots of extents a bit
faster. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Liu Bo [Mon, 27 Aug 2012 16:52:19 +0000 (10:52 -0600)]
Btrfs: cleanup extents after we finish logging inode
This is based on Josef's "Btrfs: turbo charge fsync".
We should cleanup those extents after we've finished logging inode,
otherwise we may do redundant work on them.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Josef Bacik [Fri, 24 Aug 2012 18:48:11 +0000 (14:48 -0400)]
Btrfs: only warn if we hit an error when doing the tree logging
I hit this a couple times while working on my fsync patch (all my bugs, not
normal operation), but with my new stuff we could have new errors from cases
I have not encountered, so instead of BUG()'ing we should be WARN()'ing so
that we are notified there is a problem but the user doesn't lose their
data. We can easily commit the transaction in the case that the tree
logging fails and still be fine, so let's try and be as nice to the user as
possible. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Josef Bacik [Fri, 17 Aug 2012 17:14:17 +0000 (13:14 -0400)]
Btrfs: turbo charge fsync
At least for the vm workload. Currently on fsync we will
1) Truncate all items in the log tree for the given inode if they exist
and
2) Copy all items for a given inode into the log
The problem with this is that for things like VMs you can have lots of
extents from the fragmented writing behavior, and worst yet you may have
only modified a few extents, not the entire thing. This patch fixes this
problem by tracking which transid modified our extent, and then when we do
the tree logging we find all of the extents we've modified in our current
transaction, sort them and commit them. We also only truncate up to the
xattrs of the inode and copy that stuff in normally, and then just drop any
extents in the range we have that exist in the log already. Here are some
numbers of a 50 meg fio job that does random writes and fsync()s after every
write
Original Patched
SATA drive 82KB/s 140KB/s
Fusion drive 431KB/s 2532KB/s
So around 2-6 times faster depending on your hardware. There are a few
corner cases, for example if you truncate at all we have to do it the old
way since there is no way to be sure what is in the log is ok. This
probably could be done smarter, but if you write-fsync-truncate-write-fsync
you deserve what you get. All this work is in RAM of course so if your
inode gets evicted from cache and you read it in and fsync it we'll do it
the slow way if we are still in the same transaction that we last modified
the inode in.
The biggest cool part of this is that it requires no changes to the recovery
code, so if you fsync with this patch and crash and load an old kernel, it
will run the recovery and be a-ok. I have tested this pretty thoroughly
with an fsync tester and everything comes back fine, as well as xfstests.
Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Josef Bacik [Thu, 16 Aug 2012 20:32:06 +0000 (16:32 -0400)]
Btrfs: fix possible corruption when fsyncing written prealloced extents
While working on my fsync patch my fsync tester kept hitting mismatching
md5sums when I would randomly write to a prealloc'ed region, syncfs() and
then write to the prealloced region some more and then fsync() and then
immediately reboot. This is because the tree logging code will skip writing
csums for file extents who's generation is less than the current running
transaction. When we mark extents as written we haven't been updating their
generation so they were always being skipped. This wouldn't happen if you
were to preallocate and then write in the same transaction, but if you for
example prealloced a VM you could definitely run into this problem. This
patch makes my fsync tester happy again. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Josef Bacik [Tue, 14 Aug 2012 20:20:52 +0000 (16:20 -0400)]
Btrfs: do not allocate chunks as agressively
Swinging this pendulum back the other way. We've been allocating chunks up
to 2% of the disk no matter how much we actually have allocated. So instead
fix this calculation to only allocate chunks if we have more than 80% of the
space available allocated. Please test this as it will likely cause all
sorts of ENOSPC problems to pop up suddenly. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Josef Bacik [Mon, 13 Aug 2012 19:43:26 +0000 (15:43 -0400)]
Btrfs: update last trans if we don't update the inode
There is a completely impossible situation to hit where you can preallocate
a file, fsync it, write into the preallocated region, have the transaction
commit twice and then fsync and then immediately lose power and lose all of
the contents of the write. This patch fixes this just so I feel better
about the situation and because it is lightweight, we just update the
last_trans when we finish an ordered IO and we don't update the inode
itself. This way we are completely safe and I feel better. Thanks,
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Jan Schmidt [Mon, 13 Aug 2012 08:52:38 +0000 (02:52 -0600)]
Btrfs: fix gcc warnings for 32bit compiles
Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Chris Mason [Tue, 7 Aug 2012 20:25:13 +0000 (16:25 -0400)]
Btrfs: fix btrfs send for inline items and compression
The btrfs send code was assuming the offset of the file item into the
extent translated to bytes on disk. If we're compressed, this isn't
true, and so it was off into extents owned by other files.
It was also improperly handling inline extents. This solves a crash
where we may have gone past the end of the file extent item by not
testing early enough for an inline extent. It also solves problems
where we have a whole between the end of the inline item and the start
of the full extent.
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Alexander Block [Wed, 1 Aug 2012 12:48:59 +0000 (14:48 +0200)]
Btrfs: don't treat top/root directory inode as deleted/reused
We can't do the deleted/reused logic for top/root inodes as it would
create a stream that tries to delete and recreate the root dir.
Reported-by: Alex Lyakas <alex.bolshoy.btrfs@gmail.com>
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Wed, 1 Aug 2012 12:47:03 +0000 (14:47 +0200)]
Btrfs: ignore non-FS inodes for send/receive
We have to ignore inode/space cache objects in send/receive.
Reported-by: Alex Lyakas <alex.bolshoy.btrfs@gmail.com>
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Wed, 1 Aug 2012 12:42:14 +0000 (14:42 +0200)]
Btrfs: pass root instead of parent_root to iterate_inode_ref
We need to pass the root that we determined earlier to iterate_inode_ref.
Reported-by: Alex Lyakas <alex.bolshoy.btrfs@gmail.com>
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Wed, 1 Aug 2012 10:49:15 +0000 (12:49 +0200)]
Btrfs: use <= instead of < in is_extent_unchanged
Used the wrong compare operator here.
Reported-by: Alex Lyakas <alex.bolshoy.btrfs@gmail.com>
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Wed, 1 Aug 2012 10:46:05 +0000 (12:46 +0200)]
Btrfs: fix check for changed extent in is_extent_unchanged
The previous check was working fine, but this check should be
easier to read. Also, we could theoritically have some exotic
bugs with the previous checks.
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Wed, 1 Aug 2012 10:07:43 +0000 (12:07 +0200)]
Btrfs: free nce and nce_head on error in name_cache_insert
Both were leaked in case of error.
Reported-by: Alex Lyakas <alex.bolshoy.btrfs@gmail.com>
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Wed, 1 Aug 2012 10:03:09 +0000 (12:03 +0200)]
Btrfs: remove unused tmp_path from iterate_dir_item
A leftover from older code and unused now.
Reported-by: Alex Lyakas <alex.bolshoy.btrfs@gmail.com>
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Sat, 28 Jul 2012 14:33:49 +0000 (16:33 +0200)]
Btrfs: code cleanups for send/receive
Doing some code cleanups as suggested by Arne.
Changes do not change any logic.
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Sat, 28 Jul 2012 12:11:31 +0000 (14:11 +0200)]
Btrfs: add/fix comments/documentation for send/receive
As the subject already said, add/fix comments.
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Sat, 28 Jul 2012 14:09:35 +0000 (16:09 +0200)]
Btrfs: update send_progress at correct places
Updating send_progress in process_recorded_refs was not correct.
It got updated too early in the cur_inode_new_gen case.
Reported-by: Alex Lyakas <alex.bolshoy.btrfs@gmail.com>
Reported-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Sat, 28 Jul 2012 14:18:58 +0000 (16:18 +0200)]
Btrfs: make aux field of ulist 64 bit
Btrfs send/receive uses the aux field to store inode numbers. On
32 bit machines this may become a problem.
Also fix all users of ulist_add and ulist_add_merged.
Reported-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Sat, 28 Jul 2012 12:20:58 +0000 (14:20 +0200)]
Btrfs: fix use of radix_tree for name_cache in send/receive
We can't easily use the index of the radix tree for inums as the
radix tree uses 32bit indexes on 32bit kernels. For 32bit kernels,
we now use the lower 32bit of the inum as index and an additional
list to store multiple entries per radix tree entry.
Reported-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Sat, 28 Jul 2012 12:13:35 +0000 (14:13 +0200)]
Btrfs: fix memory leak for name_cache in send/receive
When everything is done, name_cache_free is called which however
forgot to call kfree on the cache entries.
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Sat, 28 Jul 2012 10:51:32 +0000 (12:51 +0200)]
Btrfs: don't break in the final loop of find_extent_clone
If we break, we may miss the clone from send_root which we prefer
over all other clones.
Commit is a result of Arne's review.
Reported-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Sat, 28 Jul 2012 14:32:45 +0000 (16:32 +0200)]
Btrfs: use normal return path for root == send_root case
Don't have a seperate return path for the mentioned case. Now
we do the same "take lowest inode/offset" logic for all found clones.
Commit is a result of Arne's review.
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Sat, 28 Jul 2012 10:44:34 +0000 (12:44 +0200)]
Btrfs: use kmalloc instead of stack for backref_ctx
Make sure to never get in trouble due to the backref_ctx
which was on the stack before.
Commit is a result of Arne's review.
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Sat, 28 Jul 2012 10:42:05 +0000 (12:42 +0200)]
Btrfs: rename backref_ctx::found_in_send_root to found_itself
The new name should be easier to understand/read.
Commit is a result of Arne's review.
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Sat, 28 Jul 2012 10:04:16 +0000 (12:04 +0200)]
Btrfs: remove unused use_list from send/receive code
use_list is a leftover and unused.
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Sat, 28 Jul 2012 09:46:29 +0000 (11:46 +0200)]
Btrfs: add correct parent to check_dirs when dir got moved
We only added the parent for the new position of a moved dir.
We also need to add the old parent of the moved dir.
Reported-by: Alex Lyakas <alex.bolshoy.btrfs@gmail.com>
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Sat, 28 Jul 2012 09:08:09 +0000 (11:08 +0200)]
Btrfs: remove unused code with #if 0
fs_path_remove is not used at the moment due to a previous patch.
Remove it for now (with #if 0) to avoid compile warnings.
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Sat, 28 Jul 2012 09:07:18 +0000 (11:07 +0200)]
Btrfs: add missing check for dir != tmp_dir to is_first_ref
We missed that check which resultet in all refs with the same name
being reported as first_ref.
Reported-by: Alex Lyakas <alex.bolshoy.btrfs@gmail.com>
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Sat, 28 Jul 2012 08:42:24 +0000 (10:42 +0200)]
Btrfs: fix cur_ino < parent_ino case for send/receive
When the current inodes inum is smaller then the inum of the
parent directory strange things were happending due to wrong
path resolution and other bugs. Fix this with a new approach
for the problem.
Reported-by: Alex Lyakas <alex.bolshoy.btrfs@gmail.com>
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Alexander Block [Thu, 26 Jul 2012 21:39:10 +0000 (23:39 +0200)]
Btrfs: add rdev to get_inode_info in send/receive
We need rdev in the next commit.
Signed-off-by: Alexander Block <ablock84@googlemail.com>
Linus Torvalds [Sun, 30 Sep 2012 23:47:46 +0000 (16:47 -0700)]
Linux 3.6
Miklos Szeredi [Mon, 17 Sep 2012 20:23:30 +0000 (22:23 +0200)]
vfs: dcache: fix deadlock in tree traversal
IBM reported a deadlock in select_parent(). This was found to be caused
by taking rename_lock when already locked when restarting the tree
traversal.
There are two cases when the traversal needs to be restarted:
1) concurrent d_move(); this can only happen when not already locked,
since taking rename_lock protects against concurrent d_move().
2) racing with final d_put() on child just at the moment of ascending
to parent; rename_lock doesn't protect against this rare race, so it
can happen when already locked.
Because of case 2, we need to be able to handle restarting the traversal
when rename_lock is already held. This patch fixes all three callers of
try_to_ascend().
IBM reported that the deadlock is gone with this patch.
[ I rewrote the patch to be smaller and just do the "goto again" if the
lock was already held, but credit goes to Miklos for the real work.
- Linus ]
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 29 Sep 2012 17:37:04 +0000 (10:37 -0700)]
Merge tag 'iommu-fixes-v3.6-rc7' of git://git./linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
"Two small patches:
* One patch to fix the function declarations for
!CONFIG_IOMMU_API. This is causing build errors
in linux-next and should be fixed for v3.6.
* Another patch to fix an IOMMU group related NULL pointer
dereference."
* tag 'iommu-fixes-v3.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/amd: Fix wrong assumption in iommu-group specific code
iommu: static inline iommu group stub functions
Linus Torvalds [Sat, 29 Sep 2012 17:31:52 +0000 (10:31 -0700)]
Merge git://git.infradead.org/users/willy/linux-nvme
Pull NVMe driver fixes from Matthew Wilcox:
"Now that actual hardware has been released (don't have any yet
myself), people are starting to want some of these fixes merged."
Willy doesn't have hardware? Guys...
* git://git.infradead.org/users/willy/linux-nvme:
NVMe: Cancel outstanding IOs on queue deletion
NVMe: Free admin queue memory on initialisation failure
NVMe: Use ida for nvme device instance
NVMe: Fix whitespace damage in nvme_init
NVMe: handle allocation failure in nvme_map_user_pages()
NVMe: Fix uninitialized iod compiler warning
NVMe: Do not set IO queue depth beyond device max
NVMe: Set block queue max sectors
NVMe: use namespace id for nvme_get_features
NVMe: replace nvme_ns with nvme_dev for user admin
NVMe: Fix nvme module init when nvme_major is set
NVMe: Set request queue logical block size
Linus Torvalds [Sat, 8 Sep 2012 19:57:30 +0000 (12:57 -0700)]
mtdchar: fix offset overflow detection
Sasha Levin has been running trinity in a KVM tools guest, and was able
to trigger the BUG_ON() at arch/x86/mm/pat.c:279 (verifying the range of
the memory type). The call trace showed that it was mtdchar_mmap() that
created an invalid remap_pfn_range().
The problem is that mtdchar_mmap() does various really odd and subtle
things with the vma page offset etc, and uses the wrong types (and the
wrong overflow) detection for it.
For example, the page offset may well be 32-bit on a 32-bit
architecture, but after shifting it up by PAGE_SHIFT, we need to use a
potentially 64-bit resource_size_t to correctly hold the full value.
Also, we need to check that the vma length plus offset doesn't overflow
before we check that it is smaller than the length of the mtdmap region.
This fixes things up and tries to make the code a bit easier to read.
Reported-and-tested-by: Sasha Levin <levinsasha928@gmail.com>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Acked-by: Artem Bityutskiy <dedekind1@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 28 Sep 2012 17:09:33 +0000 (10:09 -0700)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David S Miller:
1) Netfilter xt_limit module can use uninitialized rules, from Jan
Engelhardt.
2) Wei Yongjun has found several more spots where error pointers were
treated as NULL/non-NULL and vice versa.
3) bnx2x was converted to pci_io{,un}map() but one remaining plain
iounmap() got missed. From Neil Horman.
4) Due to a fence-post type error in initialization of inetpeer entries
(which is where we store the ICMP rate limiting information), we can
erroneously drop ICMPs if the inetpeer was created right around when
jiffies wraps.
Fix from Nicolas Dichtel.
5) smsc75xx resume fix from Steve Glendinnig.
6) LAN87xx smsc chips need an explicit hardware init, from Marek Vasut.
7) qlcnic uses msleep() with locks held, fix from Narendra K.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
netdev: octeon: fix return value check in octeon_mgmt_init_phy()
inetpeer: fix token initialization
qlcnic: Fix scheduling while atomic bug
bnx2: Clean up remaining iounmap
net: phy: smsc: Implement PHY config_init for LAN87xx
smsc75xx: fix resume after device reset
netdev: pasemi: fix return value check in pasemi_mac_phy_init()
team: fix return value check
l2tp: fix return value check
netfilter: xt_limit: have r->cost != 0 case work
Linus Torvalds [Fri, 28 Sep 2012 17:02:53 +0000 (10:02 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro:
"A couple of fixes; one for automount/lazy umount race, another a
classic "we don't protect the refcount transition to zero with the
lock that protects looking for object in hash" kind of crap in lockd."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
close the race in nlmsvc_free_block()
do_add_mount()/umount -l races
Linus Torvalds [Fri, 28 Sep 2012 17:00:52 +0000 (10:00 -0700)]
Merge branch 'for-linus-3.6-rc-final' of git://git./linux/kernel/git/rw/uml
Pull UML fixes from Richard Weinberger.
* 'for-linus-3.6-rc-final' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
um: Preinclude include/linux/kern_levels.h
um: Fix IPC on um
um: kill thread->forking
um: let signal_delivered() do SIGTRAP on singlestepping into handler
um: don't leak floating point state and segment registers on execve()
um: take cleaning singlestep to start_thread()
Linus Torvalds [Fri, 28 Sep 2012 17:00:01 +0000 (10:00 -0700)]
Merge tag 'dm-3.6-fixes' of git://git./linux/kernel/git/agk/linux-dm
Pull dm fixes from Alasdair G Kergon:
"A few fixes for problems discovered during the 3.6 cycle.
Of particular note, are fixes to the thin target's discard support,
which I hope is finally working correctly; and fixes for multipath
ioctls and device limits when there are no paths."
* tag 'dm-3.6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm:
dm verity: fix overflow check
dm thin: fix discard support for data devices
dm thin: tidy discard support
dm: retain table limits when swapping to new table with no devices
dm table: clear add_random unless all devices have it set
dm: handle requests beyond end of device instead of using BUG_ON
dm mpath: only retry ioctl when no paths if queue_if_no_path set
dm thin: do not set discard_zeroes_data
Andrea Arcangeli [Fri, 28 Sep 2012 12:35:31 +0000 (14:35 +0200)]
thp: avoid VM_BUG_ON page_count(page) false positives in __collapse_huge_page_copy
Speculative cache pagecache lookups can elevate the refcount from
under us, so avoid the false positive. If the refcount is < 2 we'll be
notified by a VM_BUG_ON in put_page_testzero as there are two
put_page(src_page) in a row before returning from this function.
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Petr Holasek <pholasek@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Joerg Roedel [Fri, 28 Sep 2012 14:14:44 +0000 (16:14 +0200)]
iommu/amd: Fix wrong assumption in iommu-group specific code
The new IOMMU groups code in the AMD IOMMU driver makes the
assumption that there is a pci_dev struct available for all
device-ids listed in the IVRS ACPI table. Unfortunatly this
assumption is not true and so this code causes a NULL
pointer dereference at boot on some systems.
Fix it by making sure the given pointer is never NULL when
passed to the group specific code. The real fix is larger
and will be queued for v3.7.
Reported-by: Florian Dazinger <florian@dazinger.net>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Wei Yongjun [Thu, 27 Sep 2012 19:04:21 +0000 (19:04 +0000)]
netdev: octeon: fix return value check in octeon_mgmt_init_phy()
In case of error, the function of_phy_connect() returns NULL
pointer not ERR_PTR(). The IS_ERR() test in the return value
check should be replaced with NULL test.
dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 27 Sep 2012 23:51:14 +0000 (16:51 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"The three nouveau fixes quiten unneeded dmesg spam that people are
seeing and pondering,
The udl fix stops it from trying to driver monitors that are too big,
where we get a black screen.
And a vmware memory alloc problem."
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/nvc0/fifo: ignore bits in PFIFO_INTR that aren't set in PFIFO_INTR_EN
drm/udl: limit modes to the sku pixel limits.
vmwgfx: corruption in vmw_event_fence_action_create()
drm/nvc0/ltcg: mask off intr 0x10
drm/nouveau: silence a debug message triggered by newer userspace
Linus Torvalds [Thu, 27 Sep 2012 23:49:15 +0000 (16:49 -0700)]
Merge tag 'usb-3.6-rc7' of git://git./linux/kernel/git/gregkh/usb
Pull USB fixes from Greg Kroah-Hartman:
"Here are two USB bugfixes for your 3.6-rc7 tree.
The OHCI fix has been reported a number of times and is a regression
from 3.5, and the patch that causes the regression was on the way to
the -stable trees before I was reminded (again) that this fix needed
to get to your tree soon.
The host controller bugfix was reported in older kernels as being
pretty easy to trigger, and has been tested by Red Hat and their
customers.
Both have been in the usb-next branch in the -next tree for a while
now, I just cherry-picked them out to get to you in time for the 3.6
release.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
* tag 'usb-3.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: Fix race condition when removing host controllers
USB: ohci-at91: fix null pointer in ohci_hcd_at91_overcurrent_irq
Daniel Mack [Thu, 27 Sep 2012 08:26:01 +0000 (10:26 +0200)]
ALSA: snd-usb: fix next_packet_size calls for pause case
Also fix the calls to next_packet_size() for the pause case. This was
missed in
245baf983 ("ALSA: snd-usb: fix calls to next_packet_size").
Signed-off-by: Daniel Mack <zonque@gmail.com>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Reported-and-tested-by: Christian Tefzer <ctrefzer@gmx.de>
Cc: stable@kernel.org
[ Taking directly because Takashi is on vacation - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Thu, 27 Sep 2012 23:42:35 +0000 (16:42 -0700)]
Merge tag 'asoc-3.6' of git://git./linux/kernel/git/broonie/sound
Pull ASoC update from Mark Brown:
"One small and obvious driver-specific fix.
Takashi is on vacation now so he asked me to send directly, it's a
pretty bad bug with low regression risk."
* tag 'asoc-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound:
ASoC: wm2000: Correct register size
Nicolas Dichtel [Thu, 27 Sep 2012 04:11:00 +0000 (04:11 +0000)]
inetpeer: fix token initialization
When jiffies wraps around (for example, 5 minutes after the boot, see
INITIAL_JIFFIES) and peer has just been created, now - peer->rate_last can be
< XRLIM_BURST_FACTOR * timeout, so token is not set to the maximum value, thus
some icmp packets can be unexpectedly dropped.
Fix this case by initializing last_rate to 60 seconds in the past.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Narendra K [Tue, 25 Sep 2012 07:53:19 +0000 (07:53 +0000)]
qlcnic: Fix scheduling while atomic bug
In the device close path, 'qlcnic_fw_destroy_ctx' and
'qlcnic_poll_rsp' call msleep. But 'qlcnic_fw_destroy_ctx' and
'qlcnic_poll_rsp' are called with 'adapter->tx_clean_lock' spin lock
held resulting in scheduling while atomic bug causing the following
trace.
I observed that the commit
012dc19a45b2b9cc2ebd14aaa401cf782c2abba4
from John Fastabend addresses a similar issue in ixgbevf driver.
Adopting the same approach used in the commit, this patch uses mdelay
to address the issue.
[79884.999115] BUG: scheduling while atomic: ip/30846/0x00000002
[79885.005562] INFO: lockdep is turned off.
[79885.009958] Modules linked in: qlcnic fuse nf_conntrack_netbios_ns nf_conntrack_broadcast ipt_MASQUERADE bnep bluetooth rfkill ip6table_mangle ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables iptable_nat nf_nat iptable_mangle ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack iptable_filter ip_tables dcdbas coretemp kvm_intel kvm iTCO_wdt ixgbe iTCO_vendor_support crc32c_intel ghash_clmulni_intel nfsd microcode sb_edac pcspkr edac_core dca bnx2x shpchp auth_rpcgss nfs_acl lpc_ich mfd_core mdio lockd libcrc32c wmi acpi_pad acpi_power_meter sunrpc uinput sd_mod sr_mod cdrom crc_t10dif ahci libahci libata megaraid_sas usb_storage dm_mirror dm_region_hash dm_log dm_mod [last unloaded: qlcnic]
[79885.083608] Pid: 30846, comm: ip Tainted: G W O 3.6.0-rc7+ #1
[79885.090805] Call Trace:
[79885.093569] [<
ffffffff816764d8>] __schedule_bug+0x68/0x76
[79885.099699] [<
ffffffff8168358e>] __schedule+0x99e/0xa00
[79885.105634] [<
ffffffff81683929>] schedule+0x29/0x70
[79885.111186] [<
ffffffff81680def>] schedule_timeout+0x16f/0x350
[79885.117724] [<
ffffffff811afb7a>] ? init_object+0x4a/0x90
[79885.123770] [<
ffffffff8107c190>] ? __internal_add_timer+0x140/0x140
[79885.130873] [<
ffffffff81680fee>] schedule_timeout_uninterruptible+0x1e/0x20
[79885.138773] [<
ffffffff8107e830>] msleep+0x20/0x30
[79885.144159] [<
ffffffffa04c7fbf>] qlcnic_issue_cmd+0xef/0x290 [qlcnic]
[79885.151478] [<
ffffffffa04c8265>] qlcnic_fw_cmd_destroy_rx_ctx+0x55/0x90 [qlcnic]
[79885.159868] [<
ffffffffa04c92fd>] qlcnic_fw_destroy_ctx+0x2d/0xa0 [qlcnic]
[79885.167576] [<
ffffffffa04bf2ed>] __qlcnic_down+0x11d/0x180 [qlcnic]
[79885.174708] [<
ffffffffa04bf6f8>] qlcnic_close+0x18/0x20 [qlcnic]
[79885.181547] [<
ffffffff8153b4c5>] __dev_close_many+0x95/0xe0
[79885.187899] [<
ffffffff8153b548>] __dev_close+0x38/0x50
[79885.193761] [<
ffffffff81545101>] __dev_change_flags+0xa1/0x180
[79885.200419] [<
ffffffff81545298>] dev_change_flags+0x28/0x70
[79885.206779] [<
ffffffff815531b8>] do_setlink+0x378/0xa00
[79885.212731] [<
ffffffff81354fe1>] ? nla_parse+0x31/0xe0
[79885.218612] [<
ffffffff815558ee>] rtnl_newlink+0x37e/0x560
[79885.224768] [<
ffffffff812cfa19>] ? selinux_capable+0x39/0x50
[79885.231217] [<
ffffffff812cbf98>] ? security_capable+0x18/0x20
[79885.237765] [<
ffffffff81555114>] rtnetlink_rcv_msg+0x114/0x2f0
[79885.244412] [<
ffffffff81551f87>] ? rtnl_lock+0x17/0x20
[79885.250280] [<
ffffffff81551f87>] ? rtnl_lock+0x17/0x20
[79885.256148] [<
ffffffff81555000>] ? __rtnl_unlock+0x20/0x20
[79885.262413] [<
ffffffff81570fc1>] netlink_rcv_skb+0xa1/0xb0
[79885.268661] [<
ffffffff81551fb5>] rtnetlink_rcv+0x25/0x40
[79885.274727] [<
ffffffff815708bd>] netlink_unicast+0x19d/0x220
[79885.281146] [<
ffffffff81570c45>] netlink_sendmsg+0x305/0x3f0
[79885.287595] [<
ffffffff8152b188>] ? sock_update_classid+0x148/0x2e0
[79885.294650] [<
ffffffff81525c2c>] sock_sendmsg+0xbc/0xf0
[79885.300600] [<
ffffffff8152600c>] __sys_sendmsg+0x3ac/0x3c0
[79885.306853] [<
ffffffff8109be23>] ? up_read+0x23/0x40
[79885.312510] [<
ffffffff816896cc>] ? do_page_fault+0x2bc/0x570
[79885.318968] [<
ffffffff81191854>] ? sys_brk+0x44/0x150
[79885.324715] [<
ffffffff811c458c>] ? fget_light+0x24c/0x520
[79885.330875] [<
ffffffff815286f9>] sys_sendmsg+0x49/0x90
[79885.336707] [<
ffffffff8168e429>] system_call_fastpath+0x16/0x1b
Signed-off-by: Narendra K <narendra_k@dell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Neil Horman [Wed, 26 Sep 2012 07:22:02 +0000 (07:22 +0000)]
bnx2: Clean up remaining iounmap
commit
c0357e975afdbbedab5c662d19bef865f02adc17 modified bnx2 to switch from
using ioremap/iounmap to pci_iomap/pci_iounmap. They missed a spot in the error
path of bnx2_init_one though. This patch just cleans that up.
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Michael Chan <mcan@broadcom.com>
CC: "David S. Miller" <davem@davemloft.net>
Acked-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 27 Sep 2012 22:47:24 +0000 (15:47 -0700)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc
Pull one more arm-soc bugfix from Olof Johansson:
"Here's a bugfix for orion5x. Without this, PCI doesn't initialize
properly because of too small coherent pool to cover the allocations
needed.
A similar fix has already been done on kirkwood."
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: Orion5x: Fix too small coherent pool.
Linus Torvalds [Thu, 27 Sep 2012 22:46:04 +0000 (15:46 -0700)]
Merge branch 'fixes-for-3.6' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping
Pull ARM dma-mapping fix from Marek Szyprowski:
"This patch fixes a potential memory leak in the ARM dma-mapping code."
* 'fixes-for-3.6' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping:
ARM: dma-mapping: Fix potential memory leak in atomic_pool_init()
Linus Torvalds [Thu, 27 Sep 2012 22:45:20 +0000 (15:45 -0700)]
Merge tag 'gpio-fixes-v3.6' of git://git./linux/kernel/git/linusw/linux-gpio
Pull GPIO fix from Linus Walleij:
"A late GPIO fix: Roland Stigge found a problem in the LPC32xx driver
where a callback ignores one of its arguments. It needs to go into
stable too so sending this upstream immediately."
* tag 'gpio-fixes-v3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio-lpc32xx: Fix value handling of gpio_direction_output()
Linus Torvalds [Thu, 27 Sep 2012 22:44:31 +0000 (15:44 -0700)]
Merge tag 'md-3.6-fixes' of git://neil.brown.name/md
Pull two md bugfixes from NeilBrown:
"One (missing spinlock init) was only introduced recently. The other
has been present as long as raid10 has been supported, so is tagged
for -stable."
* tag 'md-3.6-fixes' of git://neil.brown.name/md:
md/raid10: fix "enough" function for detecting if array is failed.
md/raid5: add missing spin_lock_init.
Linus Torvalds [Thu, 27 Sep 2012 22:43:36 +0000 (15:43 -0700)]
Merge git://git./linux/kernel/git/mchehab/linux-edac
Pull EDAC fixes from Mauro Carvalho Chehab:
"Three edac fixes at the memory enumeration logic:
- i3200_edac: Fixes a regression at the memory rank size, when the
memorias are dual-rank;
- i5000_edac: Fix a longstanding bug when calculating the memory
size: before Kernel 3.6, the memory size were right only
with one specific configuration;
- sb_edac: Fixes a bug since the initial release of the driver:
with 16GB DIMMs, there's an overflow at the memory size,
causing the number of pages per dimm (an unsigned value)
to have the highest bit equal to 1, effectively mangling
the memory size.
The third bug can potentially affect the error decoding logic as well."
* git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac:
sb_edac: Avoid overflow errors at memory size calculation
i5000: Fix the memory size calculation with 2R memories
i3200_edac: Fix memory rank size
J. Bruce Fields [Tue, 18 Sep 2012 20:35:51 +0000 (16:35 -0400)]
trivial select_parent documentation fix
"Search list for X" sounds like you're trying to find X on a list.
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Marek Vasut [Tue, 25 Sep 2012 10:17:42 +0000 (10:17 +0000)]
net: phy: smsc: Implement PHY config_init for LAN87xx
The LAN8710/LAN8720 chips do have broken the "FlexPWR" smart power-saving
capability. Enabling it leads to the PHY not being able to detect Link when
cold-started without cable connected. Thus, make sure this is disabled.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Christian Hohnstaedt <chohnstaedt@innominate.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Fabio Estevam <fabio.estevam@freescale.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Acked-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: David S. Miller <davem@davemloft.net>
Steve Glendinning [Mon, 24 Sep 2012 04:42:59 +0000 (04:42 +0000)]
smsc75xx: fix resume after device reset
On some systems this device fails to properly resume after suspend,
this patch fixes it by running the usbnet_resume handler.
I suspect this also fixes this bug:
http://code.google.com/p/chromium-os/issues/detail?id=31871
Signed-off-by: Steve Glendinning <steve.glendinning@shawell.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Geert Uytterhoeven [Thu, 16 Aug 2012 18:15:05 +0000 (20:15 +0200)]
um: Preinclude include/linux/kern_levels.h
The userspace part of UML uses the asm-offsets.h generator mechanism to
create definitions for UM_KERN_<LEVEL> that match the in-kernel
KERN_<LEVEL> constant definitions.
As of commit
04d2c8c83d0e3ac5f78aeede51babb3236200112 ("printk: convert
the format for KERN_<LEVEL> to a 2 byte pattern"), KERN_<LEVEL> is no
longer expanded to the literal '"<LEVEL>"', but to '"\001" "LEVEL"', i.e.
it contains two parts.
However, the combo of DEFINE_STR() in
arch/x86/um/shared/sysdep/kernel-offsets.h and sed-y in Kbuild doesn't
support string literals consisting of multiple parts. Hence for all
UM_KERN_<LEVEL> definitions, only the SOH character is retained in the actual
definition, while the remainder ends up in the comment. E.g. in
include/generated/asm-offsets.h we get
#define UM_KERN_INFO "\001" /* "6" KERN_INFO */
instead of
#define UM_KERN_INFO "\001" "6" /* KERN_INFO */
This causes spurious '^A' output in some kernel messages:
Calibrating delay loop... 4640.76 BogoMIPS (lpj=
23203840)
pid_max: default: 32768 minimum: 301
Mount-cache hash table entries: 256
^AChecking that host ptys support output SIGIO...Yes
^AChecking that host ptys support SIGIO on close...No, enabling workaround
^AUsing 2.6 host AIO
NET: Registered protocol family 16
bio: create slab <bio-0> at 0
Switching to clocksource itimer
To fix this:
- Move the mapping from UM_KERN_<LEVEL> to KERN_<LEVEL> from
arch/um/include/shared/common-offsets.h to
arch/um/include/shared/user.h, which is preincluded for all userspace
parts,
- Preinclude include/linux/kern_levels.h for all userspace parts, to
obtain the in-kernel KERN_<LEVEL> constant definitions. This doesn't
violate the kernel/userspace separation, as include/linux/kern_levels.h
is self-contained and doesn't expose any other kernel internals.
- Remove the now unused STR() and DEFINE_STR() macros.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
Richard Weinberger [Thu, 27 Sep 2012 18:10:57 +0000 (20:10 +0200)]
um: Fix IPC on um
commit
c1d7e01d (ipc: use Kconfig options for __ARCH_WANT_[COMPAT_]IPC_PARSE_VERSION)
forgot UML and broke IPC on it.
Also UML has to select ARCH_WANT_IPC_PARSE_VERSION usin Kconfig.
Reported-and-tested-by: <Toralf Förster toralf.foerster@gmx.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
Wei Yongjun [Wed, 26 Sep 2012 19:51:58 +0000 (19:51 +0000)]
netdev: pasemi: fix return value check in pasemi_mac_phy_init()
In case of error, the function of_phy_connect() returns NULL
pointer not ERR_PTR(). The IS_ERR() test in the return value
check should be replaced with NULL test.
dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Yongjun [Mon, 24 Sep 2012 18:29:35 +0000 (18:29 +0000)]
team: fix return value check
In case of error, the function genlmsg_put() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check should
be replaced with NULL test.
dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Wei Yongjun [Mon, 24 Sep 2012 18:29:01 +0000 (18:29 +0000)]
l2tp: fix return value check
In case of error, the function genlmsg_put() returns NULL pointer
not ERR_PTR(). The IS_ERR() test in the return value check should
be replaced with NULL test.
dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 27 Sep 2012 17:16:14 +0000 (13:16 -0400)]
Merge branch 'master' of git://1984.lsi.us.es/nf
Pablo Neira Ayuso says:
====================
If time allows, I'd appreciate if you can take the following fix
for the xt_limit match.
As Jan indicates, random things may occur while using the xt_limit
match due to use of uninitialized memory.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Alan Stern [Wed, 26 Sep 2012 17:09:53 +0000 (13:09 -0400)]
USB: Fix race condition when removing host controllers
This patch (as1607) fixes a race that can occur if a USB host
controller is removed while a process is reading the
/sys/kernel/debug/usb/devices file.
The usb_device_read() routine uses the bus->root_hub pointer to
determine whether or not the root hub is registered. The is not a
valid test, because the pointer is set before the root hub gets
registered and remains set even after the root hub is unregistered and
deallocated. As a result, usb_device_read() or usb_device_dump() can
access freed memory, causing an oops.
The patch changes the test to use the hcd->rh_registered flag, which
does get set and cleared at the appropriate times. It also makes sure
to hold the usb_bus_list_lock mutex while setting the flag, so that
usb_device_read() will become aware of new root hubs as soon as they
are registered.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Don Zickus <dzickus@redhat.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Joachim Eastwood [Sun, 23 Sep 2012 20:56:00 +0000 (22:56 +0200)]
USB: ohci-at91: fix null pointer in ohci_hcd_at91_overcurrent_irq
Fixes the following NULL pointer dereference:
[ 7.740000] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[ 7.810000] Unable to handle kernel NULL pointer dereference at virtual address
00000028
[ 7.810000] pgd =
c3a38000
[ 7.810000] [
00000028] *pgd=
23a8c831, *pte=
00000000, *ppte=
00000000
[ 7.810000] Internal error: Oops: 17 [#1] PREEMPT ARM
[ 7.810000] Modules linked in: ohci_hcd(+) regmap_i2c snd_pcm usbcore snd_page_alloc at91_cf snd_timer pcmcia_rsrc snd soundcore gpio_keys regmap_spi pcmcia_core usb_common nls_base
[ 7.810000] CPU: 0 Not tainted (3.6.0-rc6-mpa+ #264)
[ 7.810000] PC is at __gpio_to_irq+0x18/0x40
[ 7.810000] LR is at ohci_hcd_at91_overcurrent_irq+0x24/0xb4 [ohci_hcd]
[ 7.810000] pc : [<
c01392d4>] lr : [<
bf08f694>] psr:
40000093
[ 7.810000] sp :
c3a11c40 ip :
c3a11c50 fp :
c3a11c4c
[ 7.810000] r10:
00000000 r9 :
c02dcd6e r8 :
fefff400
[ 7.810000] r7 :
00000000 r6 :
c02cc928 r5 :
00000030 r4 :
c02dd168
[ 7.810000] r3 :
c02e7350 r2 :
ffffffea r1 :
c02cc928 r0 :
00000000
[ 7.810000] Flags: nZcv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user
[ 7.810000] Control:
c000717f Table:
23a38000 DAC:
00000015
[ 7.810000] Process modprobe (pid: 285, stack limit = 0xc3a10270)
[ 7.810000] Stack: (0xc3a11c40 to 0xc3a12000)
[ 7.810000] 1c40:
c3a11c6c c3a11c50 bf08f694 c01392cc c3a11c84 c2c38b00 c3806900 00000030
[ 7.810000] 1c60:
c3a11ca4 c3a11c70 c0051264 bf08f680 c3a11cac c3a11c80 c003e764 c3806900
[ 7.810000] 1c80:
c2c38b00 c02cb05c c02cb000 fefff400 c3806930 c3a11cf4 c3a11cbc c3a11ca8
[ 7.810000] 1ca0:
c005142c c005123c c3806900 c3805a00 c3a11cd4 c3a11cc0 c0053f24 c00513e4
[ 7.810000] 1cc0:
c3a11cf4 00000030 c3a11cec c3a11cd8 c005120c c0053e88 00000000 00000000
[ 7.810000] 1ce0:
c3a11d1c c3a11cf0 c00124d0 c00511e0 01400000 00000001 00000012 00000000
[ 7.810000] 1d00:
ffffffff c3a11d94 00000030 00000000 c3a11d34 c3a11d20 c005120c c0012438
[ 7.810000] 1d20:
c001dac4 00000012 c3a11d4c c3a11d38 c0009b08 c00511e0 c00523fc 60000013
[ 7.810000] 1d40:
c3a11d5c c3a11d50 c0008510 c0009ab4 c3a11ddc c3a11d60 c0008eb4 c00084f0
[ 7.810000] 1d60:
00000000 00000030 00000000 00000080 60000013 bf08f670 c3806900 c2c38b00
[ 7.810000] 1d80:
00000030 c3806930 00000000 c3a11ddc c3a11d88 c3a11da8 c0054190 c00523fc
[ 7.810000] 1da0:
60000013 ffffffff c3a11dec c3a11db8 00000000 c2c38b00 bf08f670 c3806900
[ 7.810000] 1dc0:
00000000 00000080 c02cc928 00000030 c3a11e0c c3a11de0 c0052764 c00520d8
[ 7.810000] 1de0:
c3a11dfc 00000000 00000000 00000002 bf090f61 00000004 c02cc930 c02cc928
[ 7.810000] 1e00:
c3a11e4c c3a11e10 bf090978 c005269c bf090f61 c02cc928 bf093000 c02dd170
[ 7.810000] 1e20:
c3a11e3c c02cc930 c02cc930 bf0911d0 bf0911d0 bf093000 c3a10000 00000000
[ 7.810000] 1e40:
c3a11e5c c3a11e50 c0155b7c bf090808 c3a11e7c c3a11e60 c0154690 c0155b6c
[ 7.810000] 1e60:
c02cc930 c02cc964 bf0911d0 c3a11ea0 c3a11e9c c3a11e80 c015484c c01545e8
[ 7.810000] 1e80:
00000000 00000000 c01547e4 bf0911d0 c3a11ec4 c3a11ea0 c0152e58 c01547f4
[ 7.810000] 1ea0:
c381b88c c384ab10 c2c10540 bf0911d0 00000000 c02d7518 c3a11ed4 c3a11ec8
[ 7.810000] 1ec0:
c01544c0 c0152e0c c3a11efc c3a11ed8 c01536cc c01544b0 bf091075 c3a11ee8
[ 7.810000] 1ee0:
bf049af0 bf09120c bf0911d0 00000000 c3a11f1c c3a11f00 c0154e9c c0153628
[ 7.810000] 1f00:
bf049af0 bf09120c 000ae190 00000000 c3a11f2c c3a11f20 c0155f58 c0154e04
[ 7.810000] 1f20:
c3a11f44 c3a11f30 bf093054 c0155f1c 00000000 00006a4f c3a11f7c c3a11f48
[ 7.810000] 1f40:
c0008638 bf093010 bf09120c 000ae190 00000000 c00093c4 00006a4f bf09120c
[ 7.810000] 1f60:
000ae190 00000000 c00093c4 00000000 c3a11fa4 c3a11f80 c004fdc4 c000859c
[ 7.810000] 1f80:
c3a11fa4 000ae190 00006a4f 00016eb8 000ad018 00000080 00000000 c3a11fa8
[ 7.810000] 1fa0:
c0009260 c004fd58 00006a4f 00016eb8 000ae190 00006a4f 000ae100 00000000
[ 7.810000] 1fc0:
00006a4f 00016eb8 000ad018 00000080 000adba0 000ad208 00000000 000ad3d8
[ 7.810000] 1fe0:
beaf7ae8 beaf7ad8 000172b8 b6e4e940 20000010 000ae190 00000000 00000000
[ 7.810000] Backtrace:
[ 7.810000] [<
c01392bc>] (__gpio_to_irq+0x0/0x40) from [<
bf08f694>] (ohci_hcd_at91_overcurrent_irq+0x24/0xb4 [ohci_hcd])
[ 7.810000] [<
bf08f670>] (ohci_hcd_at91_overcurrent_irq+0x0/0xb4 [ohci_hcd]) from [<
c0051264>] (handle_irq_event_percpu+0x38/0x1a8)
[ 7.810000] r6:
00000030 r5:
c3806900 r4:
c2c38b00
[ 7.810000] [<
c005122c>] (handle_irq_event_percpu+0x0/0x1a8) from [<
c005142c>] (handle_irq_event+0x58/0x7c)
[ 7.810000] [<
c00513d4>] (handle_irq_event+0x0/0x7c) from [<
c0053f24>] (handle_simple_irq+0xac/0xd8)
[ 7.810000] r5:
c3805a00 r4:
c3806900
[ 7.810000] [<
c0053e78>] (handle_simple_irq+0x0/0xd8) from [<
c005120c>] (generic_handle_irq+0x3c/0x48)
[ 7.810000] r4:
00000030
[ 7.810000] [<
c00511d0>] (generic_handle_irq+0x0/0x48) from [<
c00124d0>] (gpio_irq_handler+0xa8/0xfc)
[ 7.810000] r4:
00000000
[ 7.810000] [<
c0012428>] (gpio_irq_handler+0x0/0xfc) from [<
c005120c>] (generic_handle_irq+0x3c/0x48)
[ 7.810000] [<
c00511d0>] (generic_handle_irq+0x0/0x48) from [<
c0009b08>] (handle_IRQ+0x64/0x88)
[ 7.810000] r4:
00000012
[ 7.810000] [<
c0009aa4>] (handle_IRQ+0x0/0x88) from [<
c0008510>] (at91_aic_handle_irq+0x30/0x38)
[ 7.810000] r5:
60000013 r4:
c00523fc
[ 7.810000] [<
c00084e0>] (at91_aic_handle_irq+0x0/0x38) from [<
c0008eb4>] (__irq_svc+0x34/0x60)
[ 7.810000] Exception stack(0xc3a11d60 to 0xc3a11da8)
[ 7.810000] 1d60:
00000000 00000030 00000000 00000080 60000013 bf08f670 c3806900 c2c38b00
[ 7.810000] 1d80:
00000030 c3806930 00000000 c3a11ddc c3a11d88 c3a11da8 c0054190 c00523fc
[ 7.810000] 1da0:
60000013 ffffffff
[ 7.810000] [<
c00520c8>] (__setup_irq+0x0/0x458) from [<
c0052764>] (request_threaded_irq+0xd8/0x134)
[ 7.810000] [<
c005268c>] (request_threaded_irq+0x0/0x134) from [<
bf090978>] (ohci_hcd_at91_drv_probe+0x180/0x41c [ohci_hcd])
[ 7.810000] [<
bf0907f8>] (ohci_hcd_at91_drv_probe+0x0/0x41c [ohci_hcd]) from [<
c0155b7c>] (platform_drv_probe+0x20/0x24)
[ 7.810000] [<
c0155b5c>] (platform_drv_probe+0x0/0x24) from [<
c0154690>] (driver_probe_device+0xb8/0x20c)
[ 7.810000] [<
c01545d8>] (driver_probe_device+0x0/0x20c) from [<
c015484c>] (__driver_attach+0x68/0x88)
[ 7.810000] r7:
c3a11ea0 r6:
bf0911d0 r5:
c02cc964 r4:
c02cc930
[ 7.810000] [<
c01547e4>] (__driver_attach+0x0/0x88) from [<
c0152e58>] (bus_for_each_dev+0x5c/0x9c)
[ 7.810000] r6:
bf0911d0 r5:
c01547e4 r4:
00000000
[ 7.810000] [<
c0152dfc>] (bus_for_each_dev+0x0/0x9c) from [<
c01544c0>] (driver_attach+0x20/0x28)
[ 7.810000] r7:
c02d7518 r6:
00000000 r5:
bf0911d0 r4:
c2c10540
[ 7.810000] [<
c01544a0>] (driver_attach+0x0/0x28) from [<
c01536cc>] (bus_add_driver+0xb4/0x22c)
[ 7.810000] [<
c0153618>] (bus_add_driver+0x0/0x22c) from [<
c0154e9c>] (driver_register+0xa8/0x144)
[ 7.810000] r7:
00000000 r6:
bf0911d0 r5:
bf09120c r4:
bf049af0
[ 7.810000] [<
c0154df4>] (driver_register+0x0/0x144) from [<
c0155f58>] (platform_driver_register+0x4c/0x60)
[ 7.810000] r7:
00000000 r6:
000ae190 r5:
bf09120c r4:
bf049af0
[ 7.810000] [<
c0155f0c>] (platform_driver_register+0x0/0x60) from [<
bf093054>] (ohci_hcd_mod_init+0x54/0x8c [ohci_hcd])
[ 7.810000] [<
bf093000>] (ohci_hcd_mod_init+0x0/0x8c [ohci_hcd]) from [<
c0008638>] (do_one_initcall+0xac/0x174)
[ 7.810000] r4:
00006a4f
[ 7.810000] [<
c000858c>] (do_one_initcall+0x0/0x174) from [<
c004fdc4>] (sys_init_module+0x7c/0x1a0)
[ 7.810000] [<
c004fd48>] (sys_init_module+0x0/0x1a0) from [<
c0009260>] (ret_fast_syscall+0x0/0x2c)
[ 7.810000] r7:
00000080 r6:
000ad018 r5:
00016eb8 r4:
00006a4f
[ 7.810000] Code:
e24cb004 e59f3028 e1a02000 e7930180 (
e5903028)
[ 7.810000] ---[ end trace
85aa37ed128143b5 ]---
[ 7.810000] Kernel panic - not syncing: Fatal exception in interrupt
Commit
6fffb77c (USB: ohci-at91: fix PIO handling in relation with number of
ports) started setting unused pins to EINVAL. But this exposed a bug in the
ohci_hcd_at91_overcurrent_irq function where the gpio was used without being
checked to see if it is valid.
This patches fixed the issue by adding the gpio valid check.
Signed-off-by: Joachim Eastwood <joachim.eastwood@jotron.com>
Cc: stable <stable@vger.kernel.org> # [3.4+] whereever 6fffb77c went
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Al Viro [Thu, 20 Sep 2012 13:28:25 +0000 (09:28 -0400)]
um: kill thread->forking
we only use that to tell copy_thread() done by syscall from that
done by kernel_thread(). However, it's easier to do simply by
checking PF_KTHREAD in thread flags.
Merge sys_clone() guts for 32bit and 64bit, while we are at it...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Thu, 6 Sep 2012 17:39:47 +0000 (13:39 -0400)]
um: let signal_delivered() do SIGTRAP on singlestepping into handler
... rather than duplicating that in sigframe setup code (and doing that
inconsistently, at that)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Thu, 6 Sep 2012 03:20:33 +0000 (23:20 -0400)]
um: don't leak floating point state and segment registers on execve()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Mon, 3 Sep 2012 07:24:18 +0000 (03:24 -0400)]
um: take cleaning singlestep to start_thread()
... assuming it's needed to be done at all
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Dave Airlie [Thu, 27 Sep 2012 07:58:53 +0000 (17:58 +1000)]
Merge branch 'drm-nouveau-fixes' of git://anongit.freedesktop.org/git/nouveau/linux-2.6 into drm-fixes
Another spurious dmesg quitening.
* 'drm-nouveau-fixes' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
drm/nvc0/fifo: ignore bits in PFIFO_INTR that aren't set in PFIFO_INTR_EN
NeilBrown [Thu, 27 Sep 2012 02:35:21 +0000 (12:35 +1000)]
md/raid10: fix "enough" function for detecting if array is failed.
The 'enough' function is written to work with 'near' arrays only
in that is implicitly assumes that the offset from one 'group' of
devices to the next is the same as the number of copies.
In reality it is the number of 'near' copies.
So change it to make this number explicit.
This bug makes it possible to run arrays without enough drives
present, which is dangerous.
It is appropriate for an -stable kernel, but will almost certainly
need to be modified for some of them.
Cc: stable@vger.kernel.org
Reported-by: Jakub Husák <jakub@gooseman.cz>
Signed-off-by: NeilBrown <neilb@suse.de>
Andrew Lunn [Mon, 24 Sep 2012 05:54:33 +0000 (07:54 +0200)]
ARM: Orion5x: Fix too small coherent pool.
Some Orion5x devices allocate their coherent buffers from atomic
context. Increase size of atomic coherent pool to make sure such the
allocations won't fail during boot.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Olof Johansson <olof@lixom.net>
Ben Skeggs [Wed, 26 Sep 2012 23:13:43 +0000 (09:13 +1000)]
drm/nvc0/fifo: ignore bits in PFIFO_INTR that aren't set in PFIFO_INTR_EN
PFIFO_INTR = 0x40000000 appears to be a normal case on nvc0/nve0 PFIFO,
the binary driver appears to completely ignore it in its PFIFO interrupt
handler and even masks off the bit (as we do) in PFIFO_INTR_EN at init
time.
The bits still light up in the hardware sometimes though, so lets just
ignore any bits we haven't explicitely requested.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>