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Message-ID: <CABXGCsO9Z0qBqa=5c=YeDkm9g=azsBVz4=V0e9tG=eYBCPOcGQ@mail.gmail.com>
Date: Sat, 6 Feb 2016 15:07:48 +0500
From: Михаил Гаврилов
<mikhail.v.gavrilov@...il.com>
To: linux-kernel@...r.kernel.org
Subject: possible irq lock inversion dependency detected
Hi! I see this message in my dmesg log.
I don't know how this information is useful for developer.
But I want helps to do Linux kernel better.
[ 1401.201555] =========================================================
[ 1401.201557] [ INFO: possible irq lock inversion dependency detected ]
[ 1401.201559] 4.3.5-300.fc23.x86_64+debug #1 Not tainted
[ 1401.201560] ---------------------------------------------------------
[ 1401.201562] kswapd0/80 just changed the state of lock:
[ 1401.201563] (&delayed_node->mutex){+.+.-.}, at:
[<ffffffffa084dccd>] __btrfs_release_delayed_node+0x3d/0x1c0 [btrfs]
[ 1401.201585] but this lock took another, RECLAIM_FS-unsafe lock in the past:
[ 1401.201586] (&fs_info->commit_root_sem){+++++.}
and interrupts could create inverse lock ordering between them.
[ 1401.201590]
other info that might help us debug this:
[ 1401.201591] Chain exists of:
&delayed_node->mutex --> &found->groups_sem -->
&fs_info->commit_root_sem
[ 1401.201596] Possible interrupt unsafe locking scenario:
[ 1401.201597] CPU0 CPU1
[ 1401.201598] ---- ----
[ 1401.201599] lock(&fs_info->commit_root_sem);
[ 1401.201601] local_irq_disable();
[ 1401.201602] lock(&delayed_node->mutex);
[ 1401.201604] lock(&found->groups_sem);
[ 1401.201606] <Interrupt>
[ 1401.201607] lock(&delayed_node->mutex);
[ 1401.201609]
*** DEADLOCK ***
[ 1401.201611] 2 locks held by kswapd0/80:
[ 1401.201612] #0: (shrinker_rwsem){++++..}, at:
[<ffffffff811f533b>] shrink_slab.part.41+0x5b/0x540
[ 1401.201620] #1: (&type->s_umount_key#57){.+.+..}, at:
[<ffffffff8127130b>] trylock_super+0x1b/0x50
[ 1401.201627]
the shortest dependencies between 2nd lock and 1st lock:
[ 1401.201636] -> (&fs_info->commit_root_sem){+++++.} ops: 1323 {
[ 1401.201640] HARDIRQ-ON-W at:
[ 1401.201642] [<ffffffff81107432>]
__lock_acquire+0x912/0x1ba0
[ 1401.201646] [<ffffffff8110903e>]
lock_acquire+0xce/0x1c0
[ 1401.201648] [<ffffffff818643da>]
down_write+0x5a/0xc0
[ 1401.201652] [<ffffffffa07dd386>]
btrfs_prepare_extent_commit+0x36/0x120 [btrfs]
[ 1401.201661] [<ffffffffa07f633a>]
btrfs_commit_transaction+0x66a/0xbd0 [btrfs]
[ 1401.201671] [<ffffffffa07f0f48>]
transaction_kthread+0x208/0x270 [btrfs]
[ 1401.201680] [<ffffffff810d1351>]
kthread+0x101/0x120
[ 1401.201683] [<ffffffff818673af>]
ret_from_fork+0x3f/0x70
[ 1401.201686] HARDIRQ-ON-R at:
[ 1401.201687] [<ffffffff8110705c>]
__lock_acquire+0x53c/0x1ba0
[ 1401.201690] [<ffffffff8110903e>]
lock_acquire+0xce/0x1c0
[ 1401.201692] [<ffffffff81864331>]
down_read+0x51/0xa0
[ 1401.201695] [<ffffffffa07eab4a>]
caching_kthread+0xda/0x360 [btrfs]
[ 1401.201703] [<ffffffff810d1351>]
kthread+0x101/0x120
[ 1401.201705] [<ffffffff818673af>]
ret_from_fork+0x3f/0x70
[ 1401.201708] SOFTIRQ-ON-W at:
[ 1401.201709] [<ffffffff8110745e>]
__lock_acquire+0x93e/0x1ba0
[ 1401.201712] [<ffffffff8110903e>]
lock_acquire+0xce/0x1c0
[ 1401.201714] [<ffffffff818643da>]
down_write+0x5a/0xc0
[ 1401.201716] [<ffffffffa07dd386>]
btrfs_prepare_extent_commit+0x36/0x120 [btrfs]
[ 1401.201724] [<ffffffffa07f633a>]
btrfs_commit_transaction+0x66a/0xbd0 [btrfs]
[ 1401.201733] [<ffffffffa07f0f48>]
transaction_kthread+0x208/0x270 [btrfs]
[ 1401.201741] [<ffffffff810d1351>]
kthread+0x101/0x120
[ 1401.201743] [<ffffffff818673af>]
ret_from_fork+0x3f/0x70
[ 1401.201745] SOFTIRQ-ON-R at:
[ 1401.201747] [<ffffffff8110745e>]
__lock_acquire+0x93e/0x1ba0
[ 1401.201749] [<ffffffff8110903e>]
lock_acquire+0xce/0x1c0
[ 1401.201751] [<ffffffff81864331>]
down_read+0x51/0xa0
[ 1401.201754] [<ffffffffa07eab4a>]
caching_kthread+0xda/0x360 [btrfs]
[ 1401.201762] [<ffffffff810d1351>]
kthread+0x101/0x120
[ 1401.201764] [<ffffffff818673af>]
ret_from_fork+0x3f/0x70
[ 1401.201766] RECLAIM_FS-ON-W at:
[ 1401.201768] [<ffffffff811065e9>]
mark_held_locks+0x79/0xa0
[ 1401.201770] [<ffffffff8110999b>]
lockdep_trace_alloc+0x7b/0xd0
[ 1401.201773] [<ffffffff812474e6>]
kmem_cache_alloc_trace+0x36/0x320
[ 1401.201776] [<ffffffff810d1116>]
kthread_create_on_node+0x116/0x250
[ 1401.201778] [<ffffffffa07eb68b>]
start_caching+0xdb/0x180 [btrfs]
[ 1401.201786] [<ffffffffa07eb7cb>]
btrfs_return_ino+0x9b/0xe0 [btrfs]
[ 1401.201794] [<ffffffffa0802d21>]
btrfs_evict_inode+0x621/0x660 [btrfs]
[ 1401.201804] [<ffffffff8128c57f>]
evict+0xaf/0x180
[ 1401.201807] [<ffffffff8128c8d9>]
iput+0x229/0x2c0
[ 1401.201809] [<ffffffff81286608>]
__dentry_kill+0x178/0x1e0
[ 1401.201812] [<ffffffff812883a7>]
dput+0x2a7/0x3a0
[ 1401.201815] [<ffffffff81280c21>]
SyS_rename+0x311/0x3a0
[ 1401.201817] [<ffffffff81867032>]
entry_SYSCALL_64_fastpath+0x12/0x76
[ 1401.201820] INITIAL USE at:
[ 1401.201821] [<ffffffff811070cd>]
__lock_acquire+0x5ad/0x1ba0
[ 1401.201823] [<ffffffff8110903e>]
lock_acquire+0xce/0x1c0
[ 1401.201826] [<ffffffff818643da>]
down_write+0x5a/0xc0
[ 1401.201828] [<ffffffffa07dd386>]
btrfs_prepare_extent_commit+0x36/0x120 [btrfs]
[ 1401.201836] [<ffffffffa07f633a>]
btrfs_commit_transaction+0x66a/0xbd0 [btrfs]
[ 1401.201845] [<ffffffffa07f0f48>]
transaction_kthread+0x208/0x270 [btrfs]
[ 1401.201853] [<ffffffff810d1351>] kthread+0x101/0x120
[ 1401.201855] [<ffffffff818673af>]
ret_from_fork+0x3f/0x70
[ 1401.201857] }
[ 1401.201859] ... key at: [<ffffffffa08924a0>]
__key.49471+0x0/0xfffffffffffe3b60 [btrfs]
[ 1401.201868] ... acquired at:
[ 1401.201869] [<ffffffff8110903e>] lock_acquire+0xce/0x1c0
[ 1401.201871] [<ffffffff81864331>] down_read+0x51/0xa0
[ 1401.201874] [<ffffffffa07d743d>] caching_thread+0x10d/0x4c0 [btrfs]
[ 1401.201881] [<ffffffffa08294a0>]
btrfs_scrubparity_helper+0x190/0x530 [btrfs]
[ 1401.201892] [<ffffffffa082995e>] btrfs_cache_helper+0xe/0x10 [btrfs]
[ 1401.201902] [<ffffffff810c9e40>] process_one_work+0x230/0x6a0
[ 1401.201905] [<ffffffff810ca2fe>] worker_thread+0x4e/0x450
[ 1401.201907] [<ffffffff810d1351>] kthread+0x101/0x120
[ 1401.201909] [<ffffffff818673af>] ret_from_fork+0x3f/0x70
[ 1401.201913] -> (&caching_ctl->mutex){+.+...} ops: 1478 {
[ 1401.201917] HARDIRQ-ON-W at:
[ 1401.201918] [<ffffffff81107432>]
__lock_acquire+0x912/0x1ba0
[ 1401.201921] [<ffffffff8110903e>]
lock_acquire+0xce/0x1c0
[ 1401.201923] [<ffffffff81863286>]
mutex_lock_nested+0x86/0x400
[ 1401.201926] [<ffffffffa07d66cb>]
cache_block_group+0x1bb/0x3e0 [btrfs]
[ 1401.201933] [<ffffffffa07e2eb3>]
find_free_extent+0x8b3/0xfb0 [btrfs]
[ 1401.201941] [<ffffffffa07e3637>]
btrfs_reserve_extent+0x87/0x170 [btrfs]
[ 1401.201949] [<ffffffffa07e3826>]
btrfs_alloc_tree_block+0x106/0x4d0 [btrfs]
[ 1401.201956] [<ffffffffa07ca0d1>]
__btrfs_cow_block+0x141/0x590 [btrfs]
[ 1401.201963] [<ffffffffa07ca6b2>]
btrfs_cow_block+0x112/0x260 [btrfs]
[ 1401.201969] [<ffffffffa07ce3a9>]
btrfs_search_slot+0x1e9/0x9f0 [btrfs]
[ 1401.201976] [<ffffffffa07d04c1>]
btrfs_insert_empty_items+0x71/0xc0 [btrfs]
[ 1401.201983] [<ffffffffa07e75f2>]
insert_with_overflow+0x42/0x120 [btrfs]
[ 1401.201992] [<ffffffffa07e777d>]
btrfs_insert_xattr_item+0xad/0x1a0 [btrfs]
[ 1401.201999] [<ffffffffa08100bb>]
do_setxattr+0xdb/0x410 [btrfs]
[ 1401.202010] [<ffffffffa0810670>]
__btrfs_setxattr+0x80/0xf0 [btrfs]
[ 1401.202019] [<ffffffffa0810b1d>]
btrfs_setxattr+0x8d/0xe0 [btrfs]
[ 1401.202028] [<ffffffff812985fc>]
__vfs_setxattr_noperm+0xac/0x1a0
[ 1401.202030] [<ffffffff81298799>]
vfs_setxattr+0xa9/0xb0
[ 1401.202032] [<ffffffff812988d9>] setxattr+0x139/0x230
[ 1401.202034] [<ffffffff81298a7a>]
path_setxattr+0xaa/0xe0
[ 1401.202037] [<ffffffff81298c71>]
SyS_lsetxattr+0x11/0x20
[ 1401.202039] [<ffffffff81867032>]
entry_SYSCALL_64_fastpath+0x12/0x76
[ 1401.202041] SOFTIRQ-ON-W at:
[ 1401.202043] [<ffffffff8110745e>]
__lock_acquire+0x93e/0x1ba0
[ 1401.202045] [<ffffffff8110903e>]
lock_acquire+0xce/0x1c0
[ 1401.202047] [<ffffffff81863286>]
mutex_lock_nested+0x86/0x400
[ 1401.202050] [<ffffffffa07d66cb>]
cache_block_group+0x1bb/0x3e0 [btrfs]
[ 1401.202057] [<ffffffffa07e2eb3>]
find_free_extent+0x8b3/0xfb0 [btrfs]
[ 1401.202065] [<ffffffffa07e3637>]
btrfs_reserve_extent+0x87/0x170 [btrfs]
[ 1401.202072] [<ffffffffa07e3826>]
btrfs_alloc_tree_block+0x106/0x4d0 [btrfs]
[ 1401.202079] [<ffffffffa07ca0d1>]
__btrfs_cow_block+0x141/0x590 [btrfs]
[ 1401.202086] [<ffffffffa07ca6b2>]
btrfs_cow_block+0x112/0x260 [btrfs]
[ 1401.202092] [<ffffffffa07ce3a9>]
btrfs_search_slot+0x1e9/0x9f0 [btrfs]
[ 1401.202099] [<ffffffffa07d04c1>]
btrfs_insert_empty_items+0x71/0xc0 [btrfs]
[ 1401.202106] [<ffffffffa07e75f2>]
insert_with_overflow+0x42/0x120 [btrfs]
[ 1401.202114] [<ffffffffa07e777d>]
btrfs_insert_xattr_item+0xad/0x1a0 [btrfs]
[ 1401.202121] [<ffffffffa08100bb>]
do_setxattr+0xdb/0x410 [btrfs]
[ 1401.202130] [<ffffffffa0810670>]
__btrfs_setxattr+0x80/0xf0 [btrfs]
[ 1401.202139] [<ffffffffa0810b1d>]
btrfs_setxattr+0x8d/0xe0 [btrfs]
[ 1401.202148] [<ffffffff812985fc>]
__vfs_setxattr_noperm+0xac/0x1a0
[ 1401.202150] [<ffffffff81298799>]
vfs_setxattr+0xa9/0xb0
[ 1401.202152] [<ffffffff812988d9>] setxattr+0x139/0x230
[ 1401.202154] [<ffffffff81298a7a>]
path_setxattr+0xaa/0xe0
[ 1401.202156] [<ffffffff81298c71>]
SyS_lsetxattr+0x11/0x20
[ 1401.202158] [<ffffffff81867032>]
entry_SYSCALL_64_fastpath+0x12/0x76
[ 1401.202161] INITIAL USE at:
[ 1401.202162] [<ffffffff811070cd>]
__lock_acquire+0x5ad/0x1ba0
[ 1401.202165] [<ffffffff8110903e>]
lock_acquire+0xce/0x1c0
[ 1401.202167] [<ffffffff81863286>]
mutex_lock_nested+0x86/0x400
[ 1401.202170] [<ffffffffa07d66cb>]
cache_block_group+0x1bb/0x3e0 [btrfs]
[ 1401.202177] [<ffffffffa07e2eb3>]
find_free_extent+0x8b3/0xfb0 [btrfs]
[ 1401.202185] [<ffffffffa07e3637>]
btrfs_reserve_extent+0x87/0x170 [btrfs]
[ 1401.202192] [<ffffffffa07e3826>]
btrfs_alloc_tree_block+0x106/0x4d0 [btrfs]
[ 1401.202199] [<ffffffffa07ca0d1>]
__btrfs_cow_block+0x141/0x590 [btrfs]
[ 1401.202205] [<ffffffffa07ca6b2>]
btrfs_cow_block+0x112/0x260 [btrfs]
[ 1401.202212] [<ffffffffa07ce3a9>]
btrfs_search_slot+0x1e9/0x9f0 [btrfs]
[ 1401.202219] [<ffffffffa07d04c1>]
btrfs_insert_empty_items+0x71/0xc0 [btrfs]
[ 1401.202226] [<ffffffffa07e75f2>]
insert_with_overflow+0x42/0x120 [btrfs]
[ 1401.202233] [<ffffffffa07e777d>]
btrfs_insert_xattr_item+0xad/0x1a0 [btrfs]
[ 1401.202241] [<ffffffffa08100bb>]
do_setxattr+0xdb/0x410 [btrfs]
[ 1401.202250] [<ffffffffa0810670>]
__btrfs_setxattr+0x80/0xf0 [btrfs]
[ 1401.202258] [<ffffffffa0810b1d>]
btrfs_setxattr+0x8d/0xe0 [btrfs]
[ 1401.202267] [<ffffffff812985fc>]
__vfs_setxattr_noperm+0xac/0x1a0
[ 1401.202269] [<ffffffff81298799>]
vfs_setxattr+0xa9/0xb0
[ 1401.202271] [<ffffffff812988d9>] setxattr+0x139/0x230
[ 1401.202273] [<ffffffff81298a7a>]
path_setxattr+0xaa/0xe0
[ 1401.202275] [<ffffffff81298c71>]
SyS_lsetxattr+0x11/0x20
[ 1401.202277] [<ffffffff81867032>]
entry_SYSCALL_64_fastpath+0x12/0x76
[ 1401.202280] }
[ 1401.202281] ... key at: [<ffffffffa08923c8>]
__key.47663+0x0/0xfffffffffffe3c38 [btrfs]
[ 1401.202289] ... acquired at:
[ 1401.202290] [<ffffffff8110903e>] lock_acquire+0xce/0x1c0
[ 1401.202292] [<ffffffff81863286>] mutex_lock_nested+0x86/0x400
[ 1401.202294] [<ffffffffa07d66cb>] cache_block_group+0x1bb/0x3e0 [btrfs]
[ 1401.202301] [<ffffffffa07e2eb3>] find_free_extent+0x8b3/0xfb0 [btrfs]
[ 1401.202308] [<ffffffffa07e3637>] btrfs_reserve_extent+0x87/0x170 [btrfs]
[ 1401.202316] [<ffffffffa07e3826>]
btrfs_alloc_tree_block+0x106/0x4d0 [btrfs]
[ 1401.202323] [<ffffffffa07ca0d1>] __btrfs_cow_block+0x141/0x590 [btrfs]
[ 1401.202329] [<ffffffffa07ca6b2>] btrfs_cow_block+0x112/0x260 [btrfs]
[ 1401.202336] [<ffffffffa07ce3a9>] btrfs_search_slot+0x1e9/0x9f0 [btrfs]
[ 1401.202342] [<ffffffffa07d04c1>]
btrfs_insert_empty_items+0x71/0xc0 [btrfs]
[ 1401.202349] [<ffffffffa07e75f2>] insert_with_overflow+0x42/0x120 [btrfs]
[ 1401.202356] [<ffffffffa07e777d>]
btrfs_insert_xattr_item+0xad/0x1a0 [btrfs]
[ 1401.202364] [<ffffffffa08100bb>] do_setxattr+0xdb/0x410 [btrfs]
[ 1401.202373] [<ffffffffa0810670>] __btrfs_setxattr+0x80/0xf0 [btrfs]
[ 1401.202381] [<ffffffffa0810b1d>] btrfs_setxattr+0x8d/0xe0 [btrfs]
[ 1401.202389] [<ffffffff812985fc>] __vfs_setxattr_noperm+0xac/0x1a0
[ 1401.202391] [<ffffffff81298799>] vfs_setxattr+0xa9/0xb0
[ 1401.202393] [<ffffffff812988d9>] setxattr+0x139/0x230
[ 1401.202395] [<ffffffff81298a7a>] path_setxattr+0xaa/0xe0
[ 1401.202397] [<ffffffff81298c71>] SyS_lsetxattr+0x11/0x20
[ 1401.202399] [<ffffffff81867032>] entry_SYSCALL_64_fastpath+0x12/0x76
[ 1401.202402] -> (&found->groups_sem){++++..} ops: 237040 {
[ 1401.202406] HARDIRQ-ON-W at:
[ 1401.202407] [<ffffffff81107432>]
__lock_acquire+0x912/0x1ba0
[ 1401.202409] [<ffffffff8110903e>]
lock_acquire+0xce/0x1c0
[ 1401.202412] [<ffffffff818643da>] down_write+0x5a/0xc0
[ 1401.202414] [<ffffffffa07de096>]
__link_block_group+0x36/0x130 [btrfs]
[ 1401.202422] [<ffffffffa07df8b5>]
btrfs_read_block_groups+0x2c5/0x650 [btrfs]
[ 1401.202429] [<ffffffffa07f2cd2>]
open_ctree+0x1992/0x25c0 [btrfs]
[ 1401.202437] [<ffffffffa07c64c5>]
btrfs_mount+0x945/0xa60 [btrfs]
[ 1401.202444] [<ffffffff81271bc8>] mount_fs+0x38/0x170
[ 1401.202446] [<ffffffff81291c1b>]
vfs_kern_mount+0x6b/0x150
[ 1401.202449] [<ffffffff81294ac5>] do_mount+0x245/0xe60
[ 1401.202451] [<ffffffff81295a2f>] SyS_mount+0x9f/0x100
[ 1401.202454] [<ffffffff81867032>]
entry_SYSCALL_64_fastpath+0x12/0x76
[ 1401.202456] HARDIRQ-ON-R at:
[ 1401.202457] [<ffffffff8110705c>]
__lock_acquire+0x53c/0x1ba0
[ 1401.202460] [<ffffffff8110903e>]
lock_acquire+0xce/0x1c0
[ 1401.202462] [<ffffffff81864331>] down_read+0x51/0xa0
[ 1401.202464] [<ffffffffa07ee4c6>]
btrfs_calc_num_tolerated_disk_barrier_failures+0x166/0x250 [btrfs]
[ 1401.202473] [<ffffffffa07f2cea>]
open_ctree+0x19aa/0x25c0 [btrfs]
[ 1401.202481] [<ffffffffa07c64c5>]
btrfs_mount+0x945/0xa60 [btrfs]
[ 1401.202487] [<ffffffff81271bc8>] mount_fs+0x38/0x170
[ 1401.202489] [<ffffffff81291c1b>]
vfs_kern_mount+0x6b/0x150
[ 1401.202492] [<ffffffff81294ac5>] do_mount+0x245/0xe60
[ 1401.202494] [<ffffffff81295a2f>] SyS_mount+0x9f/0x100
[ 1401.202496] [<ffffffff81867032>]
entry_SYSCALL_64_fastpath+0x12/0x76
[ 1401.202499] SOFTIRQ-ON-W at:
[ 1401.202500] [<ffffffff8110745e>]
__lock_acquire+0x93e/0x1ba0
[ 1401.202502] [<ffffffff8110903e>]
lock_acquire+0xce/0x1c0
[ 1401.202504] [<ffffffff818643da>] down_write+0x5a/0xc0
[ 1401.202507] [<ffffffffa07de096>]
__link_block_group+0x36/0x130 [btrfs]
[ 1401.202514] [<ffffffffa07df8b5>]
btrfs_read_block_groups+0x2c5/0x650 [btrfs]
[ 1401.202521] [<ffffffffa07f2cd2>]
open_ctree+0x1992/0x25c0 [btrfs]
[ 1401.202529] [<ffffffffa07c64c5>]
btrfs_mount+0x945/0xa60 [btrfs]
[ 1401.202535] [<ffffffff81271bc8>] mount_fs+0x38/0x170
[ 1401.202537] [<ffffffff81291c1b>]
vfs_kern_mount+0x6b/0x150
[ 1401.202539] [<ffffffff81294ac5>] do_mount+0x245/0xe60
[ 1401.202541] [<ffffffff81295a2f>] SyS_mount+0x9f/0x100
[ 1401.202544] [<ffffffff81867032>]
entry_SYSCALL_64_fastpath+0x12/0x76
[ 1401.202546] SOFTIRQ-ON-R at:
[ 1401.202547] [<ffffffff8110745e>]
__lock_acquire+0x93e/0x1ba0
[ 1401.202549] [<ffffffff8110903e>]
lock_acquire+0xce/0x1c0
[ 1401.202552] [<ffffffff81864331>] down_read+0x51/0xa0
[ 1401.202554] [<ffffffffa07ee4c6>]
btrfs_calc_num_tolerated_disk_barrier_failures+0x166/0x250 [btrfs]
[ 1401.202562] [<ffffffffa07f2cea>]
open_ctree+0x19aa/0x25c0 [btrfs]
[ 1401.202569] [<ffffffffa07c64c5>]
btrfs_mount+0x945/0xa60 [btrfs]
[ 1401.202575] [<ffffffff81271bc8>] mount_fs+0x38/0x170
[ 1401.202577] [<ffffffff81291c1b>]
vfs_kern_mount+0x6b/0x150
[ 1401.202579] [<ffffffff81294ac5>] do_mount+0x245/0xe60
[ 1401.202582] [<ffffffff81295a2f>] SyS_mount+0x9f/0x100
[ 1401.202584] [<ffffffff81867032>]
entry_SYSCALL_64_fastpath+0x12/0x76
[ 1401.202586] INITIAL USE at:
[ 1401.202588] [<ffffffff811070cd>]
__lock_acquire+0x5ad/0x1ba0
[ 1401.202590] [<ffffffff8110903e>] lock_acquire+0xce/0x1c0
[ 1401.202592] [<ffffffff818643da>] down_write+0x5a/0xc0
[ 1401.202594] [<ffffffffa07de096>]
__link_block_group+0x36/0x130 [btrfs]
[ 1401.202602] [<ffffffffa07df8b5>]
btrfs_read_block_groups+0x2c5/0x650 [btrfs]
[ 1401.202609] [<ffffffffa07f2cd2>]
open_ctree+0x1992/0x25c0 [btrfs]
[ 1401.202617] [<ffffffffa07c64c5>]
btrfs_mount+0x945/0xa60 [btrfs]
[ 1401.202623] [<ffffffff81271bc8>] mount_fs+0x38/0x170
[ 1401.202626] [<ffffffff81291c1b>]
vfs_kern_mount+0x6b/0x150
[ 1401.202628] [<ffffffff81294ac5>] do_mount+0x245/0xe60
[ 1401.202630] [<ffffffff81295a2f>] SyS_mount+0x9f/0x100
[ 1401.202632] [<ffffffff81867032>]
entry_SYSCALL_64_fastpath+0x12/0x76
[ 1401.202635] }
[ 1401.202636] ... key at: [<ffffffffa08923b0>]
__key.48555+0x0/0xfffffffffffe3c50 [btrfs]
[ 1401.202642] ... acquired at:
[ 1401.202643] [<ffffffff8110903e>] lock_acquire+0xce/0x1c0
[ 1401.202645] [<ffffffff81864331>] down_read+0x51/0xa0
[ 1401.202647] [<ffffffffa07e2fa9>] find_free_extent+0x9a9/0xfb0 [btrfs]
[ 1401.202654] [<ffffffffa07e3637>] btrfs_reserve_extent+0x87/0x170 [btrfs]
[ 1401.202660] [<ffffffffa07e3826>]
btrfs_alloc_tree_block+0x106/0x4d0 [btrfs]
[ 1401.202667] [<ffffffffa07ca0d1>] __btrfs_cow_block+0x141/0x590 [btrfs]
[ 1401.202673] [<ffffffffa07ca6b2>] btrfs_cow_block+0x112/0x260 [btrfs]
[ 1401.202680] [<ffffffffa07ce3a9>] btrfs_search_slot+0x1e9/0x9f0 [btrfs]
[ 1401.202687] [<ffffffffa07ea85e>] btrfs_lookup_inode+0x3e/0xc0 [btrfs]
[ 1401.202695] [<ffffffffa084e709>]
__btrfs_update_delayed_inode+0x69/0x210 [btrfs]
[ 1401.202706] [<ffffffffa084fb71>]
btrfs_commit_inode_delayed_inode+0x121/0x130 [btrfs]
[ 1401.202716] [<ffffffffa0802ad0>] btrfs_evict_inode+0x3d0/0x660 [btrfs]
[ 1401.202725] [<ffffffff8128c57f>] evict+0xaf/0x180
[ 1401.202727] [<ffffffff8128c8d9>] iput+0x229/0x2c0
[ 1401.202729] [<ffffffff81286608>] __dentry_kill+0x178/0x1e0
[ 1401.202732] [<ffffffff812883a7>] dput+0x2a7/0x3a0
[ 1401.202734] [<ffffffff81280c21>] SyS_rename+0x311/0x3a0
[ 1401.202737] [<ffffffff81867032>] entry_SYSCALL_64_fastpath+0x12/0x76
[ 1401.202741] -> (&delayed_node->mutex){+.+.-.} ops: 1388847 {
[ 1401.202745] HARDIRQ-ON-W at:
[ 1401.202746] [<ffffffff81107432>]
__lock_acquire+0x912/0x1ba0
[ 1401.202749] [<ffffffff8110903e>] lock_acquire+0xce/0x1c0
[ 1401.202751] [<ffffffff81863286>]
mutex_lock_nested+0x86/0x400
[ 1401.202754] [<ffffffffa08508d9>]
btrfs_delayed_update_inode+0x49/0x600 [btrfs]
[ 1401.202764] [<ffffffffa07fc2af>]
btrfs_update_inode+0x8f/0x100 [btrfs]
[ 1401.202774] [<ffffffffa08106bc>]
__btrfs_setxattr+0xcc/0xf0 [btrfs]
[ 1401.202783] [<ffffffffa0810b1d>]
btrfs_setxattr+0x8d/0xe0 [btrfs]
[ 1401.202792] [<ffffffff812985fc>]
__vfs_setxattr_noperm+0xac/0x1a0
[ 1401.202794] [<ffffffff81298799>] vfs_setxattr+0xa9/0xb0
[ 1401.202796] [<ffffffff812988d9>] setxattr+0x139/0x230
[ 1401.202799] [<ffffffff81298a7a>] path_setxattr+0xaa/0xe0
[ 1401.202801] [<ffffffff81298c71>] SyS_lsetxattr+0x11/0x20
[ 1401.202803] [<ffffffff81867032>]
entry_SYSCALL_64_fastpath+0x12/0x76
[ 1401.202805] SOFTIRQ-ON-W at:
[ 1401.202807] [<ffffffff8110745e>]
__lock_acquire+0x93e/0x1ba0
[ 1401.202809] [<ffffffff8110903e>] lock_acquire+0xce/0x1c0
[ 1401.202811] [<ffffffff81863286>]
mutex_lock_nested+0x86/0x400
[ 1401.202814] [<ffffffffa08508d9>]
btrfs_delayed_update_inode+0x49/0x600 [btrfs]
[ 1401.202825] [<ffffffffa07fc2af>]
btrfs_update_inode+0x8f/0x100 [btrfs]
[ 1401.202834] [<ffffffffa08106bc>]
__btrfs_setxattr+0xcc/0xf0 [btrfs]
[ 1401.202843] [<ffffffffa0810b1d>]
btrfs_setxattr+0x8d/0xe0 [btrfs]
[ 1401.202851] [<ffffffff812985fc>]
__vfs_setxattr_noperm+0xac/0x1a0
[ 1401.202853] [<ffffffff81298799>] vfs_setxattr+0xa9/0xb0
[ 1401.202855] [<ffffffff812988d9>] setxattr+0x139/0x230
[ 1401.202857] [<ffffffff81298a7a>] path_setxattr+0xaa/0xe0
[ 1401.202860] [<ffffffff81298c71>] SyS_lsetxattr+0x11/0x20
[ 1401.202862] [<ffffffff81867032>]
entry_SYSCALL_64_fastpath+0x12/0x76
[ 1401.202864] IN-RECLAIM_FS-W at:
[ 1401.202866] [<ffffffff8110747f>]
__lock_acquire+0x95f/0x1ba0
[ 1401.202868] [<ffffffff8110903e>]
lock_acquire+0xce/0x1c0
[ 1401.202870] [<ffffffff81863286>]
mutex_lock_nested+0x86/0x400
[ 1401.202873] [<ffffffffa084dccd>]
__btrfs_release_delayed_node+0x3d/0x1c0 [btrfs]
[ 1401.202883] [<ffffffffa084fba4>]
btrfs_remove_delayed_node+0x24/0x30 [btrfs]
[ 1401.202893] [<ffffffffa08029ac>]
btrfs_evict_inode+0x2ac/0x660 [btrfs]
[ 1401.202902] [<ffffffff8128c57f>] evict+0xaf/0x180
[ 1401.202904] [<ffffffff8128c687>]
dispose_list+0x37/0x60
[ 1401.202907] [<ffffffff8128d93a>]
prune_icache_sb+0x5a/0x80
[ 1401.202909] [<ffffffff8127148c>]
super_cache_scan+0x14c/0x1a0
[ 1401.202911] [<ffffffff811f54f3>]
shrink_slab.part.41+0x213/0x540
[ 1401.202914] [<ffffffff811fa176>]
shrink_zone+0x2b6/0x2c0
[ 1401.202917] [<ffffffff811fb661>] kswapd+0x571/0xb10
[ 1401.202919] [<ffffffff810d1351>] kthread+0x101/0x120
[ 1401.202921] [<ffffffff818673af>]
ret_from_fork+0x3f/0x70
[ 1401.202924] INITIAL USE at:
[ 1401.202925] [<ffffffff811070cd>]
__lock_acquire+0x5ad/0x1ba0
[ 1401.202927] [<ffffffff8110903e>] lock_acquire+0xce/0x1c0
[ 1401.202930] [<ffffffff81863286>]
mutex_lock_nested+0x86/0x400
[ 1401.202932] [<ffffffffa08508d9>]
btrfs_delayed_update_inode+0x49/0x600 [btrfs]
[ 1401.202942] [<ffffffffa07fc2af>]
btrfs_update_inode+0x8f/0x100 [btrfs]
[ 1401.202951] [<ffffffffa08106bc>]
__btrfs_setxattr+0xcc/0xf0 [btrfs]
[ 1401.202961] [<ffffffffa0810b1d>]
btrfs_setxattr+0x8d/0xe0 [btrfs]
[ 1401.202969] [<ffffffff812985fc>]
__vfs_setxattr_noperm+0xac/0x1a0
[ 1401.202972] [<ffffffff81298799>] vfs_setxattr+0xa9/0xb0
[ 1401.202974] [<ffffffff812988d9>] setxattr+0x139/0x230
[ 1401.202976] [<ffffffff81298a7a>] path_setxattr+0xaa/0xe0
[ 1401.202978] [<ffffffff81298c71>] SyS_lsetxattr+0x11/0x20
[ 1401.202980] [<ffffffff81867032>]
entry_SYSCALL_64_fastpath+0x12/0x76
[ 1401.202983] }
[ 1401.202984] ... key at: [<ffffffffa08963b8>]
__key.46552+0x0/0xfffffffffffdfc48 [btrfs]
[ 1401.202991] ... acquired at:
[ 1401.202992] [<ffffffff8110546d>] check_usage_forwards+0x15d/0x170
[ 1401.202995] [<ffffffff8110628a>] mark_lock+0x33a/0x620
[ 1401.202997] [<ffffffff8110747f>] __lock_acquire+0x95f/0x1ba0
[ 1401.203000] [<ffffffff8110903e>] lock_acquire+0xce/0x1c0
[ 1401.203002] [<ffffffff81863286>] mutex_lock_nested+0x86/0x400
[ 1401.203004] [<ffffffffa084dccd>]
__btrfs_release_delayed_node+0x3d/0x1c0 [btrfs]
[ 1401.203014] [<ffffffffa084fba4>]
btrfs_remove_delayed_node+0x24/0x30 [btrfs]
[ 1401.203024] [<ffffffffa08029ac>] btrfs_evict_inode+0x2ac/0x660 [btrfs]
[ 1401.203033] [<ffffffff8128c57f>] evict+0xaf/0x180
[ 1401.203036] [<ffffffff8128c687>] dispose_list+0x37/0x60
[ 1401.203038] [<ffffffff8128d93a>] prune_icache_sb+0x5a/0x80
[ 1401.203040] [<ffffffff8127148c>] super_cache_scan+0x14c/0x1a0
[ 1401.203042] [<ffffffff811f54f3>] shrink_slab.part.41+0x213/0x540
[ 1401.203045] [<ffffffff811fa176>] shrink_zone+0x2b6/0x2c0
[ 1401.203047] [<ffffffff811fb661>] kswapd+0x571/0xb10
[ 1401.203050] [<ffffffff810d1351>] kthread+0x101/0x120
[ 1401.203052] [<ffffffff818673af>] ret_from_fork+0x3f/0x70
[ 1401.203055]
stack backtrace:
[ 1401.203059] CPU: 1 PID: 80 Comm: kswapd0 Not tainted
4.3.5-300.fc23.x86_64+debug #1
[ 1401.203060] Hardware name: Gigabyte Technology Co., Ltd.
Z87M-D3H/Z87M-D3H, BIOS F11 08/12/2014
[ 1401.203062] 0000000000000000 0000000020b8f59d ffff88009c51f760
ffffffff8141c3f9
[ 1401.203066] ffffffff82f54e80 ffff88009c51f7a0 ffffffff811dd2dc
ffff88009c518998
[ 1401.203069] ffff88009c518998 ffff88009c518000 ffffffff81c7e381
0000000000000000
[ 1401.203072] Call Trace:
[ 1401.203077] [<ffffffff8141c3f9>] dump_stack+0x4b/0x72
[ 1401.203080] [<ffffffff811dd2dc>] print_irq_inversion_bug.part.40+0x1a4/0x1b0
[ 1401.203083] [<ffffffff8110546d>] check_usage_forwards+0x15d/0x170
[ 1401.203085] [<ffffffff8110628a>] mark_lock+0x33a/0x620
[ 1401.203088] [<ffffffff81105310>] ?
print_shortest_lock_dependencies+0x1a0/0x1a0
[ 1401.203090] [<ffffffff8110747f>] __lock_acquire+0x95f/0x1ba0
[ 1401.203092] [<ffffffff811076f7>] ? __lock_acquire+0xbd7/0x1ba0
[ 1401.203096] [<ffffffff810e5e8c>] ? local_clock+0x1c/0x20
[ 1401.203099] [<ffffffff8110903e>] lock_acquire+0xce/0x1c0
[ 1401.203108] [<ffffffffa084dccd>] ?
__btrfs_release_delayed_node+0x3d/0x1c0 [btrfs]
[ 1401.203111] [<ffffffff81863286>] mutex_lock_nested+0x86/0x400
[ 1401.203120] [<ffffffffa084dccd>] ?
__btrfs_release_delayed_node+0x3d/0x1c0 [btrfs]
[ 1401.203123] [<ffffffff81025c09>] ? sched_clock+0x9/0x10
[ 1401.203132] [<ffffffffa084dccd>] ?
__btrfs_release_delayed_node+0x3d/0x1c0 [btrfs]
[ 1401.203135] [<ffffffff8112515d>] ? debug_lockdep_rcu_enabled+0x1d/0x20
[ 1401.203143] [<ffffffffa084dccd>]
__btrfs_release_delayed_node+0x3d/0x1c0 [btrfs]
[ 1401.203152] [<ffffffffa084fba4>] btrfs_remove_delayed_node+0x24/0x30 [btrfs]
[ 1401.203161] [<ffffffffa08029ac>] btrfs_evict_inode+0x2ac/0x660 [btrfs]
[ 1401.203164] [<ffffffff8128c57f>] evict+0xaf/0x180
[ 1401.203166] [<ffffffff8128c687>] dispose_list+0x37/0x60
[ 1401.203168] [<ffffffff8128d93a>] prune_icache_sb+0x5a/0x80
[ 1401.203170] [<ffffffff8127148c>] super_cache_scan+0x14c/0x1a0
[ 1401.203172] [<ffffffff811f54f3>] shrink_slab.part.41+0x213/0x540
[ 1401.203175] [<ffffffff8112515d>] ? debug_lockdep_rcu_enabled+0x1d/0x20
[ 1401.203178] [<ffffffff811fa176>] shrink_zone+0x2b6/0x2c0
[ 1401.203180] [<ffffffff811fb661>] kswapd+0x571/0xb10
[ 1401.203183] [<ffffffff811fb0f0>] ? mem_cgroup_shrink_node_zone+0x300/0x300
[ 1401.203185] [<ffffffff810d1351>] kthread+0x101/0x120
[ 1401.203188] [<ffffffff81106739>] ? trace_hardirqs_on_caller+0x129/0x1b0
[ 1401.203191] [<ffffffff810d1250>] ? kthread_create_on_node+0x250/0x250
[ 1401.203193] [<ffffffff818673af>] ret_from_fork+0x3f/0x70
[ 1401.203195] [<ffffffff810d1250>] ? kthread_create_on_node+0x250/0x250
[ 1410.976378] kworker/dying (151) used greatest stack depth: 9768 bytes left
--
Best Regards,
Mike Gavrilov.
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