| Commit message (Collapse) | Author | Age |
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All other warnings use "cmd(0x%08x)" and this is the only one with
"cmd(%d)". (below comes from my userspace debug program, but not
automount daemon)
[ 1139.905676] autofs4:pid:1640:check_dev_ioctl_version: ioctl control interface version mismatch: kernel(1.0), user(0.0), cmd(-1072131215)
Link: http://lkml.kernel.org/r/20160812024851.12352.75458.stgit@pluto.themaw.net
Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Signed-off-by: Ian Kent <ikent@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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No functional changes, based on the following justification.
1. Make the code more consistent using the ioctl vector _ioctls[],
rather than assigning NULL only for this ioctl command.
2. Remove goto done; for better maintainability in the long run.
3. The existing code is based on the fact that validate_dev_ioctl()
sets ioctl version for any command, but AUTOFS_DEV_IOCTL_VERSION_CMD
should explicitly set it regardless of the default behavior.
Link: http://lkml.kernel.org/r/20160812024846.12352.9885.stgit@pluto.themaw.net
Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Signed-off-by: Ian Kent <ikent@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The count of miscellaneous device ioctls in fs/autofs4/autofs_i.h is wrong.
The number of ioctls is the difference between AUTOFS_DEV_IOCTL_VERSION_CMD
and AUTOFS_DEV_IOCTL_ISMOUNTPOINT_CMD (14) not the difference between
AUTOFS_IOC_COUNT and 11 (21).
[kusumi.tomohiro@gmail.com: fix typo that made the count macro negative]
Link: http://lkml.kernel.org/r/20160831033420.9910.16809.stgit@pluto.themaw.net
Link: http://lkml.kernel.org/r/20160812024841.12352.11975.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This isn't a return value, so change the message to indicate the status is
the result of may_umount().
(or locate pr_debug() after put_user() with the same message)
Link: http://lkml.kernel.org/r/20160812024836.12352.74628.stgit@pluto.themaw.net
Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Signed-off-by: Ian Kent <ikent@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Returning -ENOTTY here fails to free dynamically allocated param.
Link: http://lkml.kernel.org/r/20160812024815.12352.69153.stgit@pluto.themaw.net
Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Signed-off-by: Ian Kent <ikent@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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These two were left from commit aa55ddf340c9 ("autofs4: remove unused
ioctls") which removed unused ioctls.
Link: http://lkml.kernel.org/r/20160812024810.12352.96377.stgit@pluto.themaw.net
Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Signed-off-by: Ian Kent <ikent@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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kfree dentry data allocated by autofs4_new_ino() with autofs4_free_ino()
instead of raw kfree. (since we have the interface to free autofs_info*)
This patch was modified to remove the need to set the dentry info field to
NULL dew to a change in the previous patch.
Link: http://lkml.kernel.org/r/20160812024805.12352.43650.stgit@pluto.themaw.net
Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The inode allocation failure case in autofs4_dir_symlink() frees the
autofs dentry info of the dentry without setting ->d_fsdata to NULL.
That could lead to a double free so just get rid of the free and leave it
to ->d_release().
Link: http://lkml.kernel.org/r/20160812024759.12352.10653.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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It's invalid if the given mode is neither dir nor link, so warn on else
case.
Link: http://lkml.kernel.org/r/20160812024754.12352.8536.stgit@pluto.themaw.net
Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Somewhere along the line the error handling gotos have become incorrect.
Link: http://lkml.kernel.org/r/20160812024749.12352.15100.stgit@pluto.themaw.net
Signed-off-by: Ian Kent <raven@themaw.net>
Cc: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This patch does what the below comment says. It could be and it's
considered better to do this first before various functions get called
during initialization.
/* Couldn't this be tested earlier? */
Link: http://lkml.kernel.org/r/20160812024744.12352.43075.stgit@pluto.themaw.net
Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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autofs4_kill_sb() doesn't need to be declared as extern, and no other
functions in .h are explicitly declared as extern.
Link: http://lkml.kernel.org/r/20160812024739.12352.99354.stgit@pluto.themaw.net
Signed-off-by: Tomohiro Kusumi <kusumi.tomohiro@gmail.com>
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The select(2) syscall performs a kmalloc(size, GFP_KERNEL) where size grows
with the number of fds passed. We had a customer report page allocation
failures of order-4 for this allocation. This is a costly order, so it might
easily fail, as the VM expects such allocation to have a lower-order fallback.
Such trivial fallback is vmalloc(), as the memory doesn't have to be physically
contiguous and the allocation is temporary for the duration of the syscall
only. There were some concerns, whether this would have negative impact on the
system by exposing vmalloc() to userspace. Although an excessive use of vmalloc
can cause some system wide performance issues - TLB flushes etc. - a large
order allocation is not for free either and an excessive reclaim/compaction can
have a similar effect. Also note that the size is effectively limited by
RLIMIT_NOFILE which defaults to 1024 on the systems I checked. That means the
bitmaps will fit well within single page and thus the vmalloc() fallback could
be only excercised for processes where root allows a higher limit.
Note that the poll(2) syscall seems to use a linked list of order-0 pages, so
it doesn't need this kind of fallback.
[eric.dumazet@gmail.com: fix failure path logic]
[akpm@linux-foundation.org: use proper type for size]
Link: http://lkml.kernel.org/r/20160927084536.5923-1-vbabka@suse.cz
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: David Laight <David.Laight@ACULAB.COM>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Jason Baron <jbaron@akamai.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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After much discussion, it seems that the fallocate feature flag
FALLOC_FL_ZERO_RANGE maps nicely to SCSI WRITE SAME; and the feature
FALLOC_FL_PUNCH_HOLE maps nicely to the devices that have been whitelisted
for zeroing SCSI UNMAP. Punch still requires that FALLOC_FL_KEEP_SIZE is
set. A length that goes past the end of the device will be clamped to the
device size if KEEP_SIZE is set; or will return -EINVAL if not. Both
start and length must be aligned to the device's logical block size.
Since the semantics of fallocate are fairly well established already, wire
up the two pieces. The other fallocate variants (collapse range, insert
range, and allocate blocks) are not supported.
Link: http://lkml.kernel.org/r/147518379992.22791.8849838163218235007.stgit@birch.djwong.org
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Mike Snitzer <snitzer@redhat.com> # tweaked header
Cc: Brian Foster <bfoster@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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In the dlm_migrate_request_handler(), when `ret' is -EEXIST, the mle
should be freed, otherwise the memory will be leaked.
Link: http://lkml.kernel.org/r/71604351584F6A4EBAE558C676F37CA4A3D3522A@H3CMLB12-EX.srv.huawei-3com.com
Signed-off-by: Guozhonghua <guozhonghua@h3c.com>
Reviewed-by: Mark Fasheh <mfasheh@versity.com>
Cc: Eric Ren <zren@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <joseph.qi@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Dan Williams:
"Aside from the recently added pmem sub-division support these have
been in -next for several releases with no reported issues. The sub-
division support was included in next-20161010 with no reported
issues. It passes all unit tests including new tests for all the new
functionality below.
Summary:
- PMEM sub-division support: Allow a single PMEM region to be divided
into multiple namespaces. Originally, ~2 years ago, it was thought
that partitions of a /dev/pmemX block device could handle
sub-allocations of persistent memory for different use cases. With
the decision to not support DAX mappings of raw block-devices, and
the genesis of device-dax, the need for having multiple
pmem-namespace per region has grown.
- Device-DAX unified inode: In support of dynamic-resizing of a
device-dax instance the kernel arranges for all mappings of a
device-dax node to share the same inode. This allows unmap /
truncate / invalidation events to affect all instances of the
device similar to the behavior of mmap on block devices.
- Hardware error scrubbing reworks: The original address-range-scrub
and badblocks tracking solution allowed clearing entries at the
individual namespace level, but it failed to clear the internal
list of media errors maintained at the bus level. The result was
that the next scrub or namespace disable/re-enable event would
restore the cleared badblocks, but now that is fixed. The v4.8
kernel introduced an auto-scrub-on-machine-check behavior to
repopulate the badblocks list. Now, in v4.9, the auto-scrub
behavior can be disabled and simply arrange for the error reported
in the machine-check to be added to the list.
- DIMM health-event notification support: ACPI 6.1 defines a
notification event code that can be send to ACPI NVDIMM devices. A
poll(2) capable file descriptor for these events can be obtained
from the nmemX/nfit/flags sysfs-attribute of a libnvdimm memory
device.
- Miscellaneous fixes: NVDIMM-N probe error, device-dax build error,
and a change to dedup the flush hint list to not flush the memory
controller more than necessary"
* tag 'libnvdimm-for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (39 commits)
/dev/dax: fix Kconfig dependency build breakage
dax: use correct dev_t value
dax: convert devm_create_dax_dev to PTR_ERR
libnvdimm, namespace: allow creation of multiple pmem-namespaces per region
libnvdimm, namespace: lift single pmem limit in scan_labels()
libnvdimm, namespace: filter out of range labels in scan_labels()
libnvdimm, namespace: enable allocation of multiple pmem namespaces
libnvdimm, namespace: update label implementation for multi-pmem
libnvdimm, namespace: expand pmem device naming scheme for multi-pmem
libnvdimm, region: update nd_region_available_dpa() for multi-pmem support
libnvdimm, namespace: sort namespaces by dpa at init
libnvdimm, namespace: allow multiple pmem-namespaces per region at scan time
tools/testing/nvdimm: support for sub-dividing a pmem region
libnvdimm, namespace: unify blk and pmem label scanning
libnvdimm, namespace: refactor uuid_show() into a namespace_to_uuid() helper
libnvdimm, label: convert label tracking to a linked list
libnvdimm, region: move region-mapping input-paramters to nd_mapping_desc
nvdimm: reduce duplicated wpq flushes
libnvdimm: clear the internal poison_list when clearing badblocks
pmem: reduce kmap_atomic sections to the memcpys only
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In support of enabling resize / truncate of device-dax instances, define
a pseudo-fs to provide a unified inode/address space for vm operations.
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs updates from Chris Mason:
"This is a big variety of fixes and cleanups.
Liu Bo continues to fixup fuzzer related problems, and some of Josef's
cleanups are prep for his bigger extent buffer changes (slated for
v4.10)"
* 'for-linus-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (39 commits)
Revert "btrfs: let btrfs_delete_unused_bgs() to clean relocated bgs"
Btrfs: remove unnecessary btrfs_mark_buffer_dirty in split_leaf
Btrfs: don't BUG() during drop snapshot
btrfs: fix btrfs_no_printk stub helper
Btrfs: memset to avoid stale content in btree leaf
btrfs: parent_start initialization cleanup
btrfs: Remove already completed TODO comment
btrfs: Do not reassign count in btrfs_run_delayed_refs
btrfs: fix a possible umount deadlock
Btrfs: fix memory leak in do_walk_down
btrfs: btrfs_debug should consume fs_info when DEBUG is not defined
btrfs: convert send's verbose_printk to btrfs_debug
btrfs: convert pr_* to btrfs_* where possible
btrfs: convert printk(KERN_* to use pr_* calls
btrfs: unsplit printed strings
btrfs: clean the old superblocks before freeing the device
Btrfs: kill BUG_ON in run_delayed_tree_ref
Btrfs: don't leak reloc root nodes on error
btrfs: squash lines for simple wrapper functions
Btrfs: improve check_node to avoid reading corrupted nodes
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This reverts commit 5d8eb6fe517583f9c6d5b94faf2254a0207a45c9.
When we remove devices, we free the device structures. Delaying
btfs_remove_chunk() ends up hitting a use-after-free on them.
Signed-off-by: Chris Mason <clm@fb.com>
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When we're not able to get enough space through splitting leaf,
we'd create a new sibling leaf instead, and it's possible that we return
a zero-nritem sibling leaf and mark it dirty before it's in a consistent
state. With CONFIG_BTRFS_FS_CHECK_INTEGRITY=y, the integrity check of
check_leaf will report panic due to this zero-nritem non-root leaf.
This removes the unnecessary btrfs_mark_buffer_dirty.
Reported-by: Filipe Manana <fdmanana@gmail.com>
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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Really there's lots of things that can go wrong here, kill all the
BUG_ON()'s and replace the logic ones with ASSERT()'s and return EIO
instead.
Signed-off-by: Josef Bacik <jbacik@fb.com>
[ switched to btrfs_err, errors go to common label ]
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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The addition of btrfs_no_printk() caused a build failure when
CONFIG_PRINTK is disabled:
fs/btrfs/send.c: In function 'send_rename':
fs/btrfs/ctree.h:3367:2: error: implicit declaration of function 'btrfs_no_printk' [-Werror=implicit-function-declaration]
This moves the helper outside of that #ifdef so it is always
defined, and changes the existing #ifdef to refer to that
helper as well for consistency.
Fixes: 47c57058ff2c ("btrfs: btrfs_debug should consume fs_info when DEBUG is not defined")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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This is an additional patch to
"Btrfs: memset to avoid stale content in btree node block".
This uses memset to initialize the unused space in a leaf to avoid
potential stale content, which may be incurred by pushing items
between sibling leaves.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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Code cleanup. parent_start is initialized multiple times when it is
not necessary to do so.
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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Fixes: 7cf5b97650f2 ("btrfs: qgroup: Cleanup old inaccurate facilities")
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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Code cleanup. count is already (unsgined long)-1. That is the reason
run_all was set. Do not reassign it (unsigned long)-1.
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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btrfs_show_devname() is using the device_list_mutex, sometimes
a call to blkdev_put() leads vfs calling into this func. So
call blkdev_put() outside of device_list_mutex, as of now.
[ 983.284212] ======================================================
[ 983.290401] [ INFO: possible circular locking dependency detected ]
[ 983.296677] 4.8.0-rc5-ceph-00023-g1b39cec2 #1 Not tainted
[ 983.302081] -------------------------------------------------------
[ 983.308357] umount/21720 is trying to acquire lock:
[ 983.313243] (&bdev->bd_mutex){+.+.+.}, at: [<ffffffff9128ec51>] blkdev_put+0x31/0x150
[ 983.321264]
[ 983.321264] but task is already holding lock:
[ 983.327101] (&fs_devs->device_list_mutex){+.+...}, at: [<ffffffffc033d6f6>] __btrfs_close_devices+0x46/0x200 [btrfs]
[ 983.337839]
[ 983.337839] which lock already depends on the new lock.
[ 983.337839]
[ 983.346024]
[ 983.346024] the existing dependency chain (in reverse order) is:
[ 983.353512]
-> #4 (&fs_devs->device_list_mutex){+.+...}:
[ 983.359096] [<ffffffff910dfd0c>] lock_acquire+0x1bc/0x1f0
[ 983.365143] [<ffffffff91823125>] mutex_lock_nested+0x65/0x350
[ 983.371521] [<ffffffffc02d8116>] btrfs_show_devname+0x36/0x1f0 [btrfs]
[ 983.378710] [<ffffffff9129523e>] show_vfsmnt+0x4e/0x150
[ 983.384593] [<ffffffff9126ffc7>] m_show+0x17/0x20
[ 983.389957] [<ffffffff91276405>] seq_read+0x2b5/0x3b0
[ 983.395669] [<ffffffff9124c808>] __vfs_read+0x28/0x100
[ 983.401464] [<ffffffff9124eb3b>] vfs_read+0xab/0x150
[ 983.407080] [<ffffffff9124ec32>] SyS_read+0x52/0xb0
[ 983.412609] [<ffffffff91825fc0>] entry_SYSCALL_64_fastpath+0x23/0xc1
[ 983.419617]
-> #3 (namespace_sem){++++++}:
[ 983.424024] [<ffffffff910dfd0c>] lock_acquire+0x1bc/0x1f0
[ 983.430074] [<ffffffff918239e9>] down_write+0x49/0x80
[ 983.435785] [<ffffffff91272457>] lock_mount+0x67/0x1c0
[ 983.441582] [<ffffffff91272ab2>] do_add_mount+0x32/0xf0
[ 983.447458] [<ffffffff9127363a>] finish_automount+0x5a/0xc0
[ 983.453682] [<ffffffff91259513>] follow_managed+0x1b3/0x2a0
[ 983.459912] [<ffffffff9125b750>] lookup_fast+0x300/0x350
[ 983.465875] [<ffffffff9125d6e7>] path_openat+0x3a7/0xaa0
[ 983.471846] [<ffffffff9125ef75>] do_filp_open+0x85/0xe0
[ 983.477731] [<ffffffff9124c41c>] do_sys_open+0x14c/0x1f0
[ 983.483702] [<ffffffff9124c4de>] SyS_open+0x1e/0x20
[ 983.489240] [<ffffffff91825fc0>] entry_SYSCALL_64_fastpath+0x23/0xc1
[ 983.496254]
-> #2 (&sb->s_type->i_mutex_key#3){+.+.+.}:
[ 983.501798] [<ffffffff910dfd0c>] lock_acquire+0x1bc/0x1f0
[ 983.507855] [<ffffffff918239e9>] down_write+0x49/0x80
[ 983.513558] [<ffffffff91366237>] start_creating+0x87/0x100
[ 983.519703] [<ffffffff91366647>] debugfs_create_dir+0x17/0x100
[ 983.526195] [<ffffffff911df153>] bdi_register+0x93/0x210
[ 983.532165] [<ffffffff911df313>] bdi_register_owner+0x43/0x70
[ 983.538570] [<ffffffff914080fb>] device_add_disk+0x1fb/0x450
[ 983.544888] [<ffffffff91580226>] loop_add+0x1e6/0x290
[ 983.550596] [<ffffffff91fec358>] loop_init+0x10b/0x14f
[ 983.556394] [<ffffffff91002207>] do_one_initcall+0xa7/0x180
[ 983.562618] [<ffffffff91f932e0>] kernel_init_freeable+0x1cc/0x266
[ 983.569370] [<ffffffff918174be>] kernel_init+0xe/0x100
[ 983.575166] [<ffffffff9182620f>] ret_from_fork+0x1f/0x40
[ 983.581131]
-> #1 (loop_index_mutex){+.+.+.}:
[ 983.585801] [<ffffffff910dfd0c>] lock_acquire+0x1bc/0x1f0
[ 983.591858] [<ffffffff91823125>] mutex_lock_nested+0x65/0x350
[ 983.598256] [<ffffffff9157ed3f>] lo_open+0x1f/0x60
[ 983.603704] [<ffffffff9128eec3>] __blkdev_get+0x123/0x400
[ 983.609757] [<ffffffff9128f4ea>] blkdev_get+0x34a/0x350
[ 983.615639] [<ffffffff9128f554>] blkdev_open+0x64/0x80
[ 983.621428] [<ffffffff9124aff6>] do_dentry_open+0x1c6/0x2d0
[ 983.627651] [<ffffffff9124c029>] vfs_open+0x69/0x80
[ 983.633181] [<ffffffff9125db74>] path_openat+0x834/0xaa0
[ 983.639152] [<ffffffff9125ef75>] do_filp_open+0x85/0xe0
[ 983.645035] [<ffffffff9124c41c>] do_sys_open+0x14c/0x1f0
[ 983.650999] [<ffffffff9124c4de>] SyS_open+0x1e/0x20
[ 983.656535] [<ffffffff91825fc0>] entry_SYSCALL_64_fastpath+0x23/0xc1
[ 983.663541]
-> #0 (&bdev->bd_mutex){+.+.+.}:
[ 983.668107] [<ffffffff910def43>] __lock_acquire+0x1003/0x17b0
[ 983.674510] [<ffffffff910dfd0c>] lock_acquire+0x1bc/0x1f0
[ 983.680561] [<ffffffff91823125>] mutex_lock_nested+0x65/0x350
[ 983.686967] [<ffffffff9128ec51>] blkdev_put+0x31/0x150
[ 983.692761] [<ffffffffc033481f>] btrfs_close_bdev+0x4f/0x60 [btrfs]
[ 983.699699] [<ffffffffc033d77b>] __btrfs_close_devices+0xcb/0x200 [btrfs]
[ 983.707178] [<ffffffffc033d8db>] btrfs_close_devices+0x2b/0xa0 [btrfs]
[ 983.714380] [<ffffffffc03081c5>] close_ctree+0x265/0x340 [btrfs]
[ 983.721061] [<ffffffffc02d7959>] btrfs_put_super+0x19/0x20 [btrfs]
[ 983.727908] [<ffffffff91250e2f>] generic_shutdown_super+0x6f/0x100
[ 983.734744] [<ffffffff91250f56>] kill_anon_super+0x16/0x30
[ 983.740888] [<ffffffffc02da97e>] btrfs_kill_super+0x1e/0x130 [btrfs]
[ 983.747909] [<ffffffff91250fe9>] deactivate_locked_super+0x49/0x80
[ 983.754745] [<ffffffff912515fd>] deactivate_super+0x5d/0x70
[ 983.760977] [<ffffffff91270a1c>] cleanup_mnt+0x5c/0x80
[ 983.766773] [<ffffffff91270a92>] __cleanup_mnt+0x12/0x20
[ 983.772738] [<ffffffff910aa2fe>] task_work_run+0x7e/0xc0
[ 983.778708] [<ffffffff91081b5a>] exit_to_usermode_loop+0x7e/0xb4
[ 983.785373] [<ffffffff910039eb>] syscall_return_slowpath+0xbb/0xd0
[ 983.792212] [<ffffffff9182605c>] entry_SYSCALL_64_fastpath+0xbf/0xc1
[ 983.799225]
[ 983.799225] other info that might help us debug this:
[ 983.799225]
[ 983.807291] Chain exists of:
&bdev->bd_mutex --> namespace_sem --> &fs_devs->device_list_mutex
[ 983.816521] Possible unsafe locking scenario:
[ 983.816521]
[ 983.822489] CPU0 CPU1
[ 983.827043] ---- ----
[ 983.831599] lock(&fs_devs->device_list_mutex);
[ 983.836289] lock(namespace_sem);
[ 983.842268] lock(&fs_devs->device_list_mutex);
[ 983.849478] lock(&bdev->bd_mutex);
[ 983.853127]
[ 983.853127] *** DEADLOCK ***
[ 983.853127]
[ 983.859113] 3 locks held by umount/21720:
[ 983.863145] #0: (&type->s_umount_key#35){++++..}, at: [<ffffffff912515f5>] deactivate_super+0x55/0x70
[ 983.872713] #1: (uuid_mutex){+.+.+.}, at: [<ffffffffc033d8d3>] btrfs_close_devices+0x23/0xa0 [btrfs]
[ 983.882206] #2: (&fs_devs->device_list_mutex){+.+...}, at: [<ffffffffc033d6f6>] __btrfs_close_devices+0x46/0x200 [btrfs]
[ 983.893422]
[ 983.893422] stack backtrace:
[ 983.897824] CPU: 6 PID: 21720 Comm: umount Not tainted 4.8.0-rc5-ceph-00023-g1b39cec2 #1
[ 983.905958] Hardware name: Supermicro SYS-5018R-WR/X10SRW-F, BIOS 1.0c 09/07/2015
[ 983.913492] 0000000000000000 ffff8c8a53c17a38 ffffffff91429521 ffffffff9260f4f0
[ 983.921018] ffffffff92642760 ffff8c8a53c17a88 ffffffff911b2b04 0000000000000050
[ 983.928542] ffffffff9237d620 ffff8c8a5294aee0 ffff8c8a5294aeb8 ffff8c8a5294aee0
[ 983.936072] Call Trace:
[ 983.938545] [<ffffffff91429521>] dump_stack+0x85/0xc4
[ 983.943715] [<ffffffff911b2b04>] print_circular_bug+0x1fb/0x20c
[ 983.949748] [<ffffffff910def43>] __lock_acquire+0x1003/0x17b0
[ 983.955613] [<ffffffff910dfd0c>] lock_acquire+0x1bc/0x1f0
[ 983.961123] [<ffffffff9128ec51>] ? blkdev_put+0x31/0x150
[ 983.966550] [<ffffffff91823125>] mutex_lock_nested+0x65/0x350
[ 983.972407] [<ffffffff9128ec51>] ? blkdev_put+0x31/0x150
[ 983.977832] [<ffffffff9128ec51>] blkdev_put+0x31/0x150
[ 983.983101] [<ffffffffc033481f>] btrfs_close_bdev+0x4f/0x60 [btrfs]
[ 983.989500] [<ffffffffc033d77b>] __btrfs_close_devices+0xcb/0x200 [btrfs]
[ 983.996415] [<ffffffffc033d8db>] btrfs_close_devices+0x2b/0xa0 [btrfs]
[ 984.003068] [<ffffffffc03081c5>] close_ctree+0x265/0x340 [btrfs]
[ 984.009189] [<ffffffff9126cc5e>] ? evict_inodes+0x15e/0x170
[ 984.014881] [<ffffffffc02d7959>] btrfs_put_super+0x19/0x20 [btrfs]
[ 984.021176] [<ffffffff91250e2f>] generic_shutdown_super+0x6f/0x100
[ 984.027476] [<ffffffff91250f56>] kill_anon_super+0x16/0x30
[ 984.033082] [<ffffffffc02da97e>] btrfs_kill_super+0x1e/0x130 [btrfs]
[ 984.039548] [<ffffffff91250fe9>] deactivate_locked_super+0x49/0x80
[ 984.045839] [<ffffffff912515fd>] deactivate_super+0x5d/0x70
[ 984.051525] [<ffffffff91270a1c>] cleanup_mnt+0x5c/0x80
[ 984.056774] [<ffffffff91270a92>] __cleanup_mnt+0x12/0x20
[ 984.062201] [<ffffffff910aa2fe>] task_work_run+0x7e/0xc0
[ 984.067625] [<ffffffff91081b5a>] exit_to_usermode_loop+0x7e/0xb4
[ 984.073747] [<ffffffff910039eb>] syscall_return_slowpath+0xbb/0xd0
[ 984.080038] [<ffffffff9182605c>] entry_SYSCALL_64_fastpath+0xbf/0xc1
Reported-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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The extent buffer 'next' needs to be free'd conditionally.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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We can hit unused variable warnings when btrfs_debug and friends are
just aliases for no_printk. This is due to the fs_info not getting
consumed by the function call, which can happen if convenenience
variables are used. This patch adds a new btrfs_no_printk static inline
that consumes the convenience variable and does nothing else. It
silences the unused variable warning and has no impact on the generated
code:
$ size fs/btrfs/extent_io.o*
text data bss dec hex filename
44072 152 32 44256 ace0 fs/btrfs/extent_io.o.btrfs_no_printk
44072 152 32 44256 ace0 fs/btrfs/extent_io.o.no_printk
Fixes: 27a0dd61a5 (Btrfs: make btrfs_debug match pr_debug handling related to DEBUG)
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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This was basically an open-coded, less flexible dynamic printk. We can
just use btrfs_debug instead.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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For many printks, we want to know which file system issued the message.
This patch converts most pr_* calls to use the btrfs_* versions instead.
In some cases, this means adding plumbing to allow call sites access to
an fs_info pointer.
fs/btrfs/check-integrity.c is left alone for another day.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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This patch converts printk(KERN_* style messages to use the pr_* versions.
One side effect is that anything that was KERN_DEBUG is now automatically
a dynamic debug message.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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CodingStyle chapter 2:
"[...] never break user-visible strings such as printk messages,
because that breaks the ability to grep for them."
This patch unsplits user-visible strings.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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btrfs_rm_device frees the block device but then re-opens it using
the saved device name. A race exists between the close and the
re-open that allows the block size to be changed. The result
is getting stuck forever in the reclaim loop in __getblk_slow.
This patch moves the superblock cleanup before closing the block
device, which is also consistent with other callers. We also don't
need a private copy of dev_name as the whole routine operates under
the uuid_mutex.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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In a corrupted btrfs image, we can come across this BUG_ON and
get an unreponsive system, but if we return errors instead,
its caller can handle everything gracefully by aborting the current
transaction.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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We don't track the reloc roots in any sort of normal way, so the only way the
root/commit_root nodes get free'd is if the relocation finishes successfully and
the reloc root is deleted. Fix this by free'ing them in free_reloc_roots.
Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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Remove unneeded variables and assignments.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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We need to check items in a node to make sure that we're reading
a valid one, otherwise we could get various crashes while processing
delayed_refs.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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Somehow we missed btrfs_print_tree when last time we
updated error handling for read_extent_block().
This keeps us from getting a NULL pointer panic when
btrfs_print_tree's read_extent_block() fails.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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Since we could get errors from the concurrent aborted transaction,
the check of this BUG_ON in start_transaction is not true any more.
Say, while flushing free space cache inode's dirty pages,
btrfs_finish_ordered_io
-> btrfs_join_transaction_nolock
(the transaction has been aborted.)
-> BUG_ON(type == TRANS_JOIN_NOLOCK);
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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During updating btree, we could push items between sibling
nodes/leaves, for leaves data sections starts reversely from
the end of the block while for nodes we only have key pairs
which are stored one by one from the start of the block.
So we could do try to push key pairs from one node to the next
node right in the tree, and after that, we update the node's
nritems to reflect the correct end while leaving the stale
content in the node. One may intentionally corrupt the fs
image and access the stale content by bumping the nritems and
causes various crashes.
This takes the in-memory @nritems as the correct one and
gets to memset the unused part of a btree node.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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When relocating tree blocks, we firstly get block information from
back references in the extent tree, we then search fs tree to try to
find all parents of a block.
However, if fs tree is corrupted, eg. if there're some missing
items, we could come across these WARN_ONs and BUG_ONs.
This makes us print some error messages and return gracefully
from balance.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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No reason to bug on in here, fs corruption could easily cause these things to
happen.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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Nobody uses this, it makes no sense to do partial reads of extent buffers.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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We have a lot of random ints in btrfs_fs_info that can be put into flags. This
is mostly equivalent with the exception of how we deal with quota going on or
off, now instead we set a flag when we are turning it on or off and deal with
that appropriately, rather than just having a pending state that the current
quota_enabled gets set to. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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dedupe and subpage size patchset
Extend btrfs_set_extent_delalloc() and extent_clear_unlock_delalloc()
parameters for both in-band dedupe and subpage sector size patchset.
This should reduce conflict of both patchset and the effort to rebase
them.
Cc: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Cc: David Sterba <dsterba@suse.cz>
Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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We can re-use the dynamic debugging descriptor to make use of the dynamic
debugging mechanism but still use our own printk interface.
Defining the DEBUG macro works as it did before. When it's defined,
all of the messages default to print. We can also enable all debug
messages at boot or module-load time using the 'dyndbg' and
'btrfs.dyndbg' options.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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Variable 'gen' in reada_for_search() is not used since commit 58dc4ce43251
("btrfs: remove unused parameter from readahead_tree_block"). This patch
simply removes this variable.
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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Variable 'blocksize' in reada_walk_down() is not used since commit
d3e46fea1b1e ("btrfs: sink blocksize parameter to readahead_tree_block").
This patch simply removes this variable.
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
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