- 24 Oct, 2016 5 commits
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Wang Xiaoguang authored
This issue was found when testing in-band dedupe enospc behaviour, sometimes run_one_delayed_ref() may fail for enospc reason, then __btrfs_run_delayed_refs（）will return, but forget to add num_heads_read back, which will trigger "WARN_ON(delayed_refs->num_heads_ready == 0)" in btrfs_select_ref_head(). Signed-off-by:
Wang Xiaoguang <wangxg.fnst@cn.fujitsu.com> Signed-off-by:
David Sterba <dsterba@suse.com>
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Dan Carpenter authored
We cast 0 to a u8 but then because of type promotion, it's immediately cast to int back to int before we do a bitwise negate. The cast doesn't matter in this case, the code works as intended. It causes a static checker warning though so let's remove it. Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by:
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Wang Xiaoguang authored
In btrfs_truncate_inode_items()->btrfs_async_run_delayed_refs(), we swap the arg2 and arg3 wrongly, fix this. This bug just impacts asynchronous delayed refs handle when we truncate inodes. In delayed_ref_async_start(), there is such codes: trans = btrfs_join_transaction(async->root); if (trans->transid > async->transid) goto end; ret = btrfs_run_delayed_refs(trans, async->root, async->count); From this codes, we can see that this just influence whether can we handle delayed refs or the number of delayed refs to handle, this may impact performance, but will not result in missing delayed refs, all delayed refs will be handled in btrfs_commit_transaction(). Signed-off-by:Holger Hoffstätte <holger@applied-asynchrony.com> Signed-off-by:
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Wang Xiaoguang authored
Indeed this just make the behavior similar to xfs when process has fatal signals pending, and it'll make fstests/generic/298 happy. Signed-off-by:
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Goldwyn Rodrigues authored
While free'ing qgroup->reserved resources, we much check if the page has not been invalidated by a truncate operation by checking if the page is still dirty before reducing the qgroup resources. Resources in such a case are free'd when the entire extent is released by delayed_ref. This fixes a double accounting while releasing resources in case of truncating a file, reproduced by the following testcase. SCRATCH_DEV=/dev/vdb SCRATCH_MNT=/mnt mkfs.btrfs -f $SCRATCH_DEV mount -t btrfs $SCRATCH_DEV $SCRATCH_MNT cd $SCRATCH_MNT btrfs quota enable $SCRATCH_MNT btrfs subvolume create a btrfs qgroup limit 500m a $SCRATCH_MNT sync for c in {1..15}; do dd if=/dev/zero bs=1M count=40 of=$SCRATCH_MNT/a/file; done sleep 10 sync sleep 5 touch $SCRATCH_MNT/a/newfile echo "Removing file" rm $SCRATCH_MNT/a/file Fixes: b9d0b389 ("btrfs: Add handler for invalidate page") Signed-off-by:Goldwyn Rodrigues <rgoldwyn@suse.com> Reviewed-by:
Qu Wenruo <quwenruo@cn.fujitsu.com> Signed-off-by:
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- 17 Oct, 2016 1 commit
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Liu Bo authored
While updating btree, we try to push items between sibling nodes/leaves in order to keep height as low as possible. But we don't memset the original places with zero when pushing items so that we could end up leaving stale content in nodes/leaves. One may read the above stale content by increasing btree blocks' @nritems. One case I've come across is that in fs tree, a leaf has two parent nodes, hence running balance ends up with processing this leaf with two parent nodes, but it can only reach the valid parent node through btrfs_search_slot, so it'd be like, do_relocation for P in all parent nodes of block A: if !P->eb: btrfs_search_slot(key); --> get path from P to A. if lowest: BUG_ON(A->bytenr != bytenr of A recorded in P); btrfs_cow_block(P, A); --> change A's bytenr in P. After btrfs_cow_block, P has the new bytenr of A, but with the same @key, we get the same path again, and get panic by BUG_ON. Note that this is only happening in a corrupted fs, for a regular fs in which we have correct @nritems so that we won't read stale content in any case. Reviewed-by:Josef Bacik <jbacik@fb.com> Signed-off-by:
Liu Bo <bo.li.liu@oracle.com> Signed-off-by:
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- 12 Oct, 2016 1 commit
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Chris Mason authored
Merge branch 'fst-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.9 Signed-off-by:
Chris Mason <clm@fb.com>
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- 10 Oct, 2016 1 commit
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Chris Mason authored
This reverts commit 5d8eb6fe. 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:
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- 03 Oct, 2016 7 commits
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David Sterba authored
The recommended way is to put all members on separate lines. Signed-off-by: -
David Sterba authored
We don't change the given extent ranges, mark them const to catch accidental changes. Signed-off-by: -
Omar Sandoval authored
The free space tree format conversion functions were broken on big-endian systems, but the sanity tests didn't catch it because all of the operations were aligned to multiple words. This was meant to catch any bugs in the extent buffer code's handling of high memory, but it ended up hiding the endianness bug. Expand the tests to do both sector-aligned and page-aligned operations. Tested-by:
Chandan Rajendra <chandan@linux.vnet.ibm.com> Signed-off-by:
Omar Sandoval <osandov@fb.com> Signed-off-by:
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Omar Sandoval authored
The in-memory bitmap code manipulates words and is therefore sensitive to endianness, while the extent buffer bitmap code addresses bytes and is byte-order agnostic. Because the byte addressing of the extent buffer bitmaps is equivalent to a little-endian in-memory bitmap, the extent buffer bitmap tests fail on big-endian systems. 34b3e6c9 ("Btrfs: self-tests: Fix extent buffer bitmap test fail on BE system") worked around another endianness bug in the tests but missed this one because ed9e4afd ("Btrfs: self-tests: Execute page straddling test only when nodesize < PAGE_SIZE") disables this part of the test on ppc64. That change lost the original meaning of the test, however. We really want to test that an equivalent series of operations using the in-memory bitmap API and the extent buffer bitmap API produces equivalent results. To fix this, don't use memcmp_extent_buffer() or write_extent_buffer(); do everything bit-by-bit. Reported-by:
Anatoly Pugachev <matorola@gmail.com> Tested-by:
Feifei Xu <xufeifei@linux.vnet.ibm.com> Tested-by:
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Omar Sandoval authored
There are two separate issues that can lead to corrupted free space trees. 1. The free space tree bitmaps had an endianness issue on big-endian systems which is fixed by an earlier patch in this series. 2. btrfs-progs before v4.7.3 modified filesystems without updating the free space tree. To catch both of these issues at once, we need to force the free space tree to be rebuilt. To do so, add a FREE_SPACE_TREE_VALID compat_ro bit. If the bit isn't set, we know that it was either produced by a broken big-endian kernel or may have been corrupted by btrfs-progs. This also provides us with a way to add rudimentary read-write support for the free space tree to btrfs-progs: it can just clear this bit and have the kernel rebuild the free space tree. Cc: stable@vger.kernel.org # 4.5+ Tested-by:
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Omar Sandoval authored
We moved the code for creating the free space tree the first time that it's enabled, but didn't move the clearing code along with it. This breaks my (undocumented) intention that `mount -o clear_cache,space_cache=v2` would clear the free space tree and then recreate it. Fixes: 511711af ("btrfs: don't run delayed references while we are creating the free space tree") Cc: stable@vger.kernel.org # 4.5+ Tested-by:
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Omar Sandoval authored
In convert_free_space_to_{bitmaps,extents}(), we buffer the free space bitmaps in memory and copy them directly to/from the extent buffers with {read,write}_extent_buffer(). The extent buffer bitmap helpers use byte granularity, which is equivalent to a little-endian bitmap. This means that on big-endian systems, the in-memory bitmaps will be written to disk byte-swapped. To fix this, use byte-granularity for the bitmaps in memory. Fixes: a5ed9182 ("Btrfs: implement the free space B-tree") Cc: stable@vger.kernel.org # 4.5+ Tested-by:
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- 26 Sep, 2016 25 commits
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Liu Bo authored
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:
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Josef Bacik authored
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:
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Arnd Bergmann authored
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:
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Liu Bo authored
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:
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Goldwyn Rodrigues authored
Code cleanup. parent_start is initialized multiple times when it is not necessary to do so. Signed-off-by:
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Goldwyn Rodrigues authored
Fixes: 7cf5b976 ("btrfs: qgroup: Cleanup old inaccurate facilities") Signed-off-by:
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Goldwyn Rodrigues authored
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:
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Anand Jain authored
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:
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Liu Bo authored
The extent buffer 'next' needs to be free'd conditionally. Signed-off-by:
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Jeff Mahoney authored
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: 27a0dd61 (Btrfs: make btrfs_debug match pr_debug handling related to DEBUG) Signed-off-by:
Jeff Mahoney <jeffm@suse.com> Signed-off-by:
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Jeff Mahoney authored
This was basically an open-coded, less flexible dynamic printk. We can just use btrfs_debug instead. Signed-off-by:
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Jeff Mahoney authored
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:
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Jeff Mahoney authored
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:
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Jeff Mahoney authored
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:
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Jeff Mahoney authored
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:
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Liu Bo authored
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:
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Josef Bacik authored
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:
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Masahiro Yamada authored
Remove unneeded variables and assignments. Signed-off-by:
Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by:
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Liu Bo authored
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:
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Liu Bo authored
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:
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Liu Bo authored
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 authored
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:
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Liu Bo authored
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:
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Josef Bacik authored
No reason to bug on in here, fs corruption could easily cause these things to happen. Signed-off-by:
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Josef Bacik authored
Nobody uses this, it makes no sense to do partial reads of extent buffers. Signed-off-by:
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