> Hmm, this round of trinity triggered a different hang.
This hang is reproducible so far with the command below on a overlayfs/xfs,
$ trinity -g vfs --arch 64 --disable-fds=sockets --disable-fds=perf --disable-fds=epoll
--disable-fds=eventfd --disable-fds=pseudo --disable-fds=timerfd --disable-fds=memfd
--disable-fds=drm
>
> [ 2094.403119] INFO: task trinity-c0:3126 blocked for more than 120 seconds.
> [ 2094.410705] Not tainted 4.8.0-rc8-splice-fixw-proc+ #4
> [ 2094.417027] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
> this message.
> [ 2094.425770] trinity-c0 D ffff88044efc3d10 13472 3126 3124
> 0x00000084
> [ 2094.433659] ffff88044efc3d10 ffffffff00000000 ffff880400000000
> ffff880822b5e000
> [ 2094.441965] ffff88044c8b8000 ffff88044efc4000 ffff880443755670
> ffff880443755658
> [ 2094.450272] ffffffff00000000 ffff88044c8b8000 ffff88044efc3d28
> ffffffff817cdaaf
> [ 2094.458572] Call Trace:
> [ 2094.461312] [<ffffffff817cdaaf>] schedule+0x3f/0xa0
> [ 2094.466858] [<ffffffff817d2782>] rwsem_down_write_failed+0x242/0x4b0
> [ 2094.474049] [<ffffffff817d25ac>] ? rwsem_down_write_failed+0x6c/0x4b0
> [ 2094.481352] [<ffffffff810fd5f2>] ? __lock_acquire+0x472/0x1990
> [ 2094.487964] [<ffffffff813e27b7>] call_rwsem_down_write_failed+0x17/0x30
> [ 2094.495450] [<ffffffff817d1bff>] down_write+0x5f/0x80
> [ 2094.501190] [<ffffffff8127e301>] ? chown_common.isra.12+0x131/0x1e0
> [ 2094.508284] [<ffffffff8127e301>] chown_common.isra.12+0x131/0x1e0
> [ 2094.515177] [<ffffffff81284be1>] ? __sb_start_write+0xd1/0xf0
> [ 2094.521692] [<ffffffff810cc367>] ? preempt_count_add+0x47/0xc0
> [ 2094.528304] [<ffffffff812a665f>] ? mnt_clone_write+0x3f/0x70
> [ 2094.534723] [<ffffffff8127faef>] SyS_fchown+0x8f/0xa0
> [ 2094.540463] [<ffffffff81003c9c>] do_syscall_64+0x6c/0x1e0
> [ 2094.546588] [<ffffffff817d4a3f>] entry_SYSCALL64_slow_path+0x25/0x25
> [ 2094.553784] 2 locks held by trinity-c0/3126:
> [ 2094.558552] #0: (sb_writers#14){.+.+.+}, at: [<ffffffff81284be1>]
> __sb_start_write+0xd1/0xf0
> [ 2094.568240] #1: (&sb->s_type->i_mutex_key#17){++++++}, at:
> [<ffffffff8127e301>] chown_common.isra.12+0x131/0x1e0
> [ 2094.579864] INFO: task trinity-c1:3127 blocked for more than 120 seconds.
> [ 2094.587442] Not tainted 4.8.0-rc8-splice-fixw-proc+ #4
> [ 2094.593761] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
> this message.
> [ 2094.602503] trinity-c1 D ffff88045a1bbd10 13312 3127 3124
> 0x00000084
> [ 2094.610402] ffff88045a1bbd10 ffff880443769fe8 ffff880400000000
> ffff88046cefe000
> [ 2094.618710] ffff88044c8ba000 ffff88045a1bc000 ffff880443769fd0
> ffff88045a1bbd40
> [ 2094.627015] ffff880443769fe8 ffff88044376a158 ffff88045a1bbd28
> ffffffff817cdaaf
> [ 2094.635321] Call Trace:
> [ 2094.638053] [<ffffffff817cdaaf>] schedule+0x3f/0xa0
> [ 2094.643597] [<ffffffff817d24b7>] rwsem_down_read_failed+0x107/0x190
> [ 2094.650726] [<ffffffffa0322cca>] ? xfs_file_fsync+0xea/0x2e0 [xfs]
> [ 2094.657727] [<ffffffff813e2788>] call_rwsem_down_read_failed+0x18/0x30
> [ 2094.665119] [<ffffffff810f8b0b>] down_read_nested+0x5b/0x80
> [ 2094.671457] [<ffffffffa03335fa>] ? xfs_ilock+0xfa/0x260 [xfs]
> [ 2094.677987] [<ffffffffa03335fa>] xfs_ilock+0xfa/0x260 [xfs]
> [ 2094.684324] [<ffffffffa0322cca>] xfs_file_fsync+0xea/0x2e0 [xfs]
> [ 2094.691133] [<ffffffff812bdbbd>] vfs_fsync_range+0x3d/0xb0
> [ 2094.697354] [<ffffffff812bdc8d>] do_fsync+0x3d/0x70
> [ 2094.702896] [<ffffffff812bdf40>] SyS_fsync+0x10/0x20
> [ 2094.708528] [<ffffffff81003c9c>] do_syscall_64+0x6c/0x1e0
> [ 2094.714652] [<ffffffff817d4a3f>] entry_SYSCALL64_slow_path+0x25/0x25
> [ 2094.721844] 1 lock held by trinity-c1/3127:
> [ 2094.726515] #0: (&xfs_nondir_ilock_class){++++..}, at:
> [<ffffffffa03335fa>] xfs_ilock+0xfa/0x260 [xfs]
> [ 2094.737181] INFO: task trinity-c2:3128 blocked for more than 120 seconds.
> [ 2094.744751] Not tainted 4.8.0-rc8-splice-fixw-proc+ #4
> [ 2094.751068] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
> this message.
> [ 2094.759810] trinity-c2 D ffff8804574f3df8 13472 3128 3124
> 0x00000084
> [ 2094.767692] ffff8804574f3df8 0000000000000006 0000000000000000
> ffff8804569a4000
> [ 2094.776002] ffff88044c8bc000 ffff8804574f4000 ffff8804622eb338
> ffff88044c8bc000
> [ 2094.784307] 0000000000000246 00000000ffffffff ffff8804574f3e10
> ffffffff817cdaaf
> [ 2094.792605] Call Trace:
> [ 2094.795340] [<ffffffff817cdaaf>] schedule+0x3f/0xa0
> [ 2094.800886] [<ffffffff817cdf18>] schedule_preempt_disabled+0x18/0x30
> [ 2094.808078] [<ffffffff817cf4df>] mutex_lock_nested+0x19f/0x450
> [ 2094.814688] [<ffffffff812a5313>] ? __fdget_pos+0x43/0x50
> [ 2094.820715] [<ffffffff812a5313>] __fdget_pos+0x43/0x50
> [ 2094.826544] [<ffffffff81297f53>] SyS_getdents+0x83/0x140
> [ 2094.832573] [<ffffffff81297cd0>] ? fillonedir+0x100/0x100
> [ 2094.838699] [<ffffffff81003c9c>] do_syscall_64+0x6c/0x1e0
> [ 2094.844822] [<ffffffff817d4a3f>] entry_SYSCALL64_slow_path+0x25/0x25
> [ 2094.852013] 1 lock held by trinity-c2/3128:
> [ 2094.856682] #0: (&f->f_pos_lock){+.+.+.}, at: [<ffffffff812a5313>]
> __fdget_pos+0x43/0x50
> [ 2094.865969] INFO: task trinity-c3:3129 blocked for more than 120 seconds.
> [ 2094.873547] Not tainted 4.8.0-rc8-splice-fixw-proc+ #4
> [ 2094.879864] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
> this message.
> [ 2094.888606] trinity-c3 D ffff880455ce3e08 13440 3129 3124
> 0x00000084
> [ 2094.896495] ffff880455ce3e08 0000000000000006 0000000000000000
> ffff88045144e000
> [ 2094.904803] ffff88044c8be000 ffff880455ce4000 ffff8804622eb338
> ffff88044c8be000
> [ 2094.913111] 0000000000000246 00000000ffffffff ffff880455ce3e20
> ffffffff817cdaaf
> [ 2094.921418] Call Trace:
> [ 2094.924152] [<ffffffff817cdaaf>] schedule+0x3f/0xa0
> [ 2094.929695] [<ffffffff817cdf18>] schedule_preempt_disabled+0x18/0x30
> [ 2094.936885] [<ffffffff817cf4df>] mutex_lock_nested+0x19f/0x450
> [ 2094.943496] [<ffffffff812a5313>] ? __fdget_pos+0x43/0x50
> [ 2094.949526] [<ffffffff8117729f>] ? __audit_syscall_entry+0xaf/0x100
> [ 2094.956620] [<ffffffff812a5313>] __fdget_pos+0x43/0x50
> [ 2094.962454] [<ffffffff81298091>] SyS_getdents64+0x81/0x130
> [ 2094.968675] [<ffffffff81297a80>] ? iterate_dir+0x190/0x190
> [ 2094.974895] [<ffffffff81003c9c>] do_syscall_64+0x6c/0x1e0
> [ 2094.981019] [<ffffffff817d4a3f>] entry_SYSCALL64_slow_path+0x25/0x25
> [ 2094.988204] 1 lock held by trinity-c3/3129:
> [ 2094.992872] #0: (&f->f_pos_lock){+.+.+.}, at: [<ffffffff812a5313>]
> __fdget_pos+0x43/0x50
> [ 2095.002158] INFO: task trinity-c4:3130 blocked for more than 120 seconds.
> [ 2095.009734] Not tainted 4.8.0-rc8-splice-fixw-proc+ #4
> [ 2095.016052] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
> this message.
> [ 2095.024793] trinity-c4 D ffff880458997e28 13392 3130 3124
> 0x00000084
> [ 2095.032690] ffff880458997e28 0000000000000006 0000000000000000
> ffff88046ca18000
> [ 2095.040995] ffff880458998000 ffff880458998000 ffff8804622eb338
> ffff880458998000
> [ 2095.049342] 0000000000000246 00000000ffffffff ffff880458997e40
> ffffffff817cdaaf
> [ 2095.057650] Call Trace:
> [ 2095.060382] [<ffffffff817cdaaf>] schedule+0x3f/0xa0
> [ 2095.065926] [<ffffffff817cdf18>] schedule_preempt_disabled+0x18/0x30
> [ 2095.073118] [<ffffffff817cf4df>] mutex_lock_nested+0x19f/0x450
> [ 2095.079728] [<ffffffff812a5313>] ? __fdget_pos+0x43/0x50
> [ 2095.085757] [<ffffffff812a5313>] __fdget_pos+0x43/0x50
> [ 2095.091589] [<ffffffff812811dd>] SyS_lseek+0x1d/0xb0
> [ 2095.097229] [<ffffffff81003c9c>] do_syscall_64+0x6c/0x1e0
> [ 2095.103355] [<ffffffff817d4a3f>] entry_SYSCALL64_slow_path+0x25/0x25
> [ 2095.110547] 1 lock held by trinity-c4/3130:
> [ 2095.115216] #0: (&f->f_pos_lock){+.+.+.}, at: [<ffffffff812a5313>]
> __fdget_pos+0x43/0x50
> [ 2095.124507] INFO: task trinity-c5:3131 blocked for more than 120 seconds.
> [ 2095.132083] Not tainted 4.8.0-rc8-splice-fixw-proc+ #4
> [ 2095.138402] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
> this message.
> [ 2095.147135] trinity-c5 D ffff88045a12bae0 13472 3131 3124
> 0x00000084
> [ 2095.155034] ffff88045a12bae0 ffff880443769fe8 ffff880400000000
> ffff88046ca1a000
> [ 2095.163339] ffff88045899a000 ffff88045a12c000 ffff880443769fd0
> ffff88045a12bb10
> [ 2095.171645] ffff880443769fe8 0000000000000000 ffff88045a12baf8
> ffffffff817cdaaf
> [ 2095.179952] Call Trace:
> [ 2095.182684] [<ffffffff817cdaaf>] schedule+0x3f/0xa0
> [ 2095.188230] [<ffffffff817d24b7>] rwsem_down_read_failed+0x107/0x190
> [ 2095.195341] [<ffffffffa03337d4>] ? xfs_ilock_attr_map_shared+0x34/0x40
> [xfs]
> [ 2095.203310] [<ffffffff813e2788>] call_rwsem_down_read_failed+0x18/0x30
> [ 2095.210696] [<ffffffff810f8b0b>] down_read_nested+0x5b/0x80
> [ 2095.217029] [<ffffffffa03335fa>] ? xfs_ilock+0xfa/0x260 [xfs]
> [ 2095.223558] [<ffffffffa03335fa>] xfs_ilock+0xfa/0x260 [xfs]
> [ 2095.229894] [<ffffffffa03337d4>] xfs_ilock_attr_map_shared+0x34/0x40
> [xfs]
> [ 2095.237682] [<ffffffffa02ccfaf>] xfs_attr_get+0xdf/0x1b0 [xfs]
> [ 2095.244312] [<ffffffffa0341bfc>] xfs_xattr_get+0x4c/0x70 [xfs]
> [ 2095.250924] [<ffffffff812ad269>] generic_getxattr+0x59/0x70
> [ 2095.257244] [<ffffffff812acf9b>] vfs_getxattr+0x8b/0xb0
> [ 2095.263177] [<ffffffffa0435bd6>] ovl_xattr_get+0x46/0x60 [overlay]
> [ 2095.270176] [<ffffffffa04331aa>] ovl_other_xattr_get+0x1a/0x20 [overlay]
> [ 2095.277756] [<ffffffff812ad269>] generic_getxattr+0x59/0x70
> [ 2095.284079] [<ffffffff81345e9e>] cap_inode_need_killpriv+0x2e/0x40
> [ 2095.291078] [<ffffffff81349a33>] security_inode_need_killpriv+0x33/0x50
> [ 2095.298560] [<ffffffff812a2fb0>] dentry_needs_remove_privs+0x30/0x50
> [ 2095.305743] [<ffffffff8127ea21>] do_truncate+0x51/0xc0
> [ 2095.311581] [<ffffffff81284be1>] ? __sb_start_write+0xd1/0xf0
> [ 2095.318094] [<ffffffff81284be1>] ? __sb_start_write+0xd1/0xf0
> [ 2095.324609] [<ffffffff8127edde>] do_sys_ftruncate.constprop.15+0xfe/0x160
> [ 2095.332286] [<ffffffff8127ee7e>] SyS_ftruncate+0xe/0x10
> [ 2095.338225] [<ffffffff81003c9c>] do_syscall_64+0x6c/0x1e0
> [ 2095.344339] [<ffffffff817d4a3f>] entry_SYSCALL64_slow_path+0x25/0x25
> [ 2095.351531] 2 locks held by trinity-c5/3131:
> [ 2095.356297] #0: (sb_writers#14){.+.+.+}, at: [<ffffffff81284be1>]
> __sb_start_write+0xd1/0xf0
> [ 2095.365983] #1: (&xfs_nondir_ilock_class){++++..}, at:
> [<ffffffffa03335fa>] xfs_ilock+0xfa/0x260 [xfs]
> [ 2095.376647] INFO: task trinity-c6:3132 blocked for more than 120 seconds.
> [ 2095.384216] Not tainted 4.8.0-rc8-splice-fixw-proc+ #4
> [ 2095.390535] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
> this message.
> [ 2095.399275] trinity-c6 D ffff88044da5fd30 13312 3132 3124
> 0x00000084
> [ 2095.407177] ffff88044da5fd30 ffffffff00000000 ffff880400000000
> ffff880459858000
> [ 2095.415485] ffff88045899c000 ffff88044da60000 ffff880443755670
> ffff880443755658
> [ 2095.423789] ffffffff00000000 ffff88045899c000 ffff88044da5fd48
> ffffffff817cdaaf
> [ 2095.432094] Call Trace:
> [ 2095.434825] [<ffffffff817cdaaf>] schedule+0x3f/0xa0
> [ 2095.440372] [<ffffffff817d2782>] rwsem_down_write_failed+0x242/0x4b0
> [ 2095.447565] [<ffffffff817d25ac>] ? rwsem_down_write_failed+0x6c/0x4b0
> [ 2095.454854] [<ffffffff813e27b7>] call_rwsem_down_write_failed+0x17/0x30
> [ 2095.462337] [<ffffffff817d1bff>] down_write+0x5f/0x80
> [ 2095.468077] [<ffffffff8127e413>] ? chmod_common+0x63/0x150
> [ 2095.474300] [<ffffffff8127e413>] chmod_common+0x63/0x150
> [ 2095.480327] [<ffffffff8117729f>] ? __audit_syscall_entry+0xaf/0x100
> [ 2095.487421] [<ffffffff810035cc>] ? syscall_trace_enter+0x1dc/0x390
> [ 2095.494418] [<ffffffff8127f5f2>] SyS_fchmod+0x52/0x80
> [ 2095.500155] [<ffffffff81003c9c>] do_syscall_64+0x6c/0x1e0
> [ 2095.506270] [<ffffffff817d4a3f>] entry_SYSCALL64_slow_path+0x25/0x25
> [ 2095.513452] 2 locks held by trinity-c6/3132:
> [ 2095.518217] #0: (sb_writers#14){.+.+.+}, at: [<ffffffff81284be1>]
> __sb_start_write+0xd1/0xf0
> [ 2095.527895] #1: (&sb->s_type->i_mutex_key#17){++++++}, at:
> [<ffffffff8127e413>] chmod_common+0x63/0x150
> [ 2095.538648] INFO: task trinity-c7:3133 blocked for more than 120 seconds.
> [ 2095.546227] Not tainted 4.8.0-rc8-splice-fixw-proc+ #4
> [ 2095.552544] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
> this message.
> [ 2095.561288] trinity-c7 D ffff88044d393d10 13472 3133 3124
> 0x00000084
> [ 2095.569188] ffff88044d393d10 ffff880443769fe8 ffff880400000000
> ffff88086ce68000
> [ 2095.577491] ffff88045899e000 ffff88044d394000 ffff880443769fd0
> ffff88044d393d40
> [ 2095.585796] ffff880443769fe8 ffff88044376a158 ffff88044d393d28
> ffffffff817cdaaf
> [ 2095.594103] Call Trace:
> [ 2095.596836] [<ffffffff817cdaaf>] schedule+0x3f/0xa0
> [ 2095.602379] [<ffffffff817d24b7>] rwsem_down_read_failed+0x107/0x190
> [ 2095.609491] [<ffffffffa0322cca>] ? xfs_file_fsync+0xea/0x2e0 [xfs]
> [ 2095.616490] [<ffffffff813e2788>] call_rwsem_down_read_failed+0x18/0x30
> [ 2095.623877] [<ffffffff810f8b0b>] down_read_nested+0x5b/0x80
> [ 2095.630212] [<ffffffffa03335fa>] ? xfs_ilock+0xfa/0x260 [xfs]
> [ 2095.636740] [<ffffffffa03335fa>] xfs_ilock+0xfa/0x260 [xfs]
> [ 2095.643076] [<ffffffffa0322cca>] xfs_file_fsync+0xea/0x2e0 [xfs]
> [ 2095.649889] [<ffffffff812bdbbd>] vfs_fsync_range+0x3d/0xb0
> [ 2095.656109] [<ffffffff812bdc8d>] do_fsync+0x3d/0x70
> [ 2095.661653] [<ffffffff812bdf40>] SyS_fsync+0x10/0x20
> [ 2095.667291] [<ffffffff81003c9c>] do_syscall_64+0x6c/0x1e0
> [ 2095.673417] [<ffffffff817d4a3f>] entry_SYSCALL64_slow_path+0x25/0x25
> [ 2095.680610] 1 lock held by trinity-c7/3133:
> [ 2095.685281] #0: (&xfs_nondir_ilock_class){++++..}, at:
> [<ffffffffa03335fa>] xfs_ilock+0xfa/0x260 [xfs]
> [ 2095.695947] INFO: task trinity-c8:3135 blocked for more than 120 seconds.
> [ 2095.703530] Not tainted 4.8.0-rc8-splice-fixw-proc+ #4
> [ 2095.709848] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
> this message.
> [ 2095.718590] trinity-c8 D ffff88044d3b3d10 12912 3135 3124
> 0x00000084
> [ 2095.726470] ffff88044d3b3d10 ffff880443769fe8 ffff880400000000
> ffff88046ca30000
> [ 2095.734775] ffff88044d3a8000 ffff88044d3b4000 ffff880443769fd0
> ffff88044d3b3d40
> [ 2095.743083] ffff880443769fe8 ffff88044376a158 ffff88044d3b3d28
> ffffffff817cdaaf
> [ 2095.751387] Call Trace:
> [ 2095.754119] [<ffffffff817cdaaf>] schedule+0x3f/0xa0
> [ 2095.759662] [<ffffffff817d24b7>] rwsem_down_read_failed+0x107/0x190
> [ 2095.766772] [<ffffffffa0322cca>] ? xfs_file_fsync+0xea/0x2e0 [xfs]
> [ 2095.773763] [<ffffffff813e2788>] call_rwsem_down_read_failed+0x18/0x30
> [ 2095.781148] [<ffffffff810f8b0b>] down_read_nested+0x5b/0x80
> [ 2095.787482] [<ffffffffa03335fa>] ? xfs_ilock+0xfa/0x260 [xfs]
> [ 2095.794013] [<ffffffffa03335fa>] xfs_ilock+0xfa/0x260 [xfs]
> [ 2095.800347] [<ffffffffa0322cca>] xfs_file_fsync+0xea/0x2e0 [xfs]
> [ 2095.807155] [<ffffffff812bdbbd>] vfs_fsync_range+0x3d/0xb0
> [ 2095.813377] [<ffffffff812bdc8d>] do_fsync+0x3d/0x70
> [ 2095.818921] [<ffffffff812bdf63>] SyS_fdatasync+0x13/0x20
> [ 2095.824949] [<ffffffff81003c9c>] do_syscall_64+0x6c/0x1e0
> [ 2095.831074] [<ffffffff817d4a3f>] entry_SYSCALL64_slow_path+0x25/0x25
> [ 2095.838261] 1 lock held by trinity-c8/3135:
> [ 2095.842930] #0: (&xfs_nondir_ilock_class){++++..}, at:
> [<ffffffffa03335fa>] xfs_ilock+0xfa/0x260 [xfs]
> [ 2095.853588] INFO: task trinity-c9:3136 blocked for more than 120 seconds.
> [ 2095.861167] Not tainted 4.8.0-rc8-splice-fixw-proc+ #4
> [ 2095.867485] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables
> this message.
> [ 2095.876228] trinity-c9 D ffff88045b3679e0 13328 3136 3124
> 0x00000084
> [ 2095.884111] ffff88045b3679e0 ffff880443769fe8 ffff880400000000
> ffff88086ce56000
> [ 2095.892417] ffff88044d3aa000 ffff88045b368000 ffff880443769fd0
> ffff88045b367a10
> [ 2095.900721] ffff880443769fe8 ffff88044376a1e8 ffff88045b3679f8
> ffffffff817cdaaf
> [ 2095.909024] Call Trace:
> [ 2095.911761] [<ffffffff817cdaaf>] schedule+0x3f/0xa0
> [ 2095.917305] [<ffffffff817d24b7>] rwsem_down_read_failed+0x107/0x190
> [ 2095.924414] [<ffffffffa0333790>] ? xfs_ilock_data_map_shared+0x30/0x40
> [xfs]
> [ 2095.932383] [<ffffffff813e2788>] call_rwsem_down_read_failed+0x18/0x30
> [ 2095.939768] [<ffffffff810f8b0b>] down_read_nested+0x5b/0x80
> [ 2095.946104] [<ffffffffa03335fa>] ? xfs_ilock+0xfa/0x260 [xfs]
> [ 2095.952632] [<ffffffffa03335fa>] xfs_ilock+0xfa/0x260 [xfs]
> [ 2095.958968] [<ffffffffa0333790>] xfs_ilock_data_map_shared+0x30/0x40
> [xfs]
> [ 2095.966752] [<ffffffffa03128c6>] __xfs_get_blocks+0x96/0x9d0 [xfs]
> [ 2095.973753] [<ffffffff8126462e>] ?
> mem_cgroup_event_ratelimit.isra.39+0x3e/0xb0
> [ 2095.982012] [<ffffffff8126e8e5>] ? mem_cgroup_commit_charge+0x95/0x110
> [ 2095.989413] [<ffffffffa0313214>] xfs_get_blocks+0x14/0x20 [xfs]
> [ 2095.996122] [<ffffffff812cca44>] do_mpage_readpage+0x474/0x800
> [ 2096.002745] [<ffffffffa0313200>] ? __xfs_get_blocks+0x9d0/0x9d0 [xfs]
> [ 2096.010037] [<ffffffff81402fd7>] ? debug_smp_processor_id+0x17/0x20
> [ 2096.017136] [<ffffffff811f3565>] ? __lru_cache_add+0x75/0xb0
> [ 2096.023551] [<ffffffff811f45fe>] ? lru_cache_add+0xe/0x10
> [ 2096.029678] [<ffffffff812ccf0d>] mpage_readpages+0x13d/0x1b0
> [ 2096.036109] [<ffffffffa0313200>] ? __xfs_get_blocks+0x9d0/0x9d0 [xfs]
> [ 2096.043420] [<ffffffffa0313200>] ? __xfs_get_blocks+0x9d0/0x9d0 [xfs]
> [ 2096.050724] [<ffffffffa0311f14>] xfs_vm_readpages+0x54/0x170 [xfs]
> [ 2096.057724] [<ffffffff811f1a1d>] __do_page_cache_readahead+0x2ad/0x370
> [ 2096.065113] [<ffffffff811f18ec>] ? __do_page_cache_readahead+0x17c/0x370
> [ 2096.072693] [<ffffffff8117729f>] ? __audit_syscall_entry+0xaf/0x100
> [ 2096.079787] [<ffffffff811f2014>] force_page_cache_readahead+0x94/0xf0
> [ 2096.087077] [<ffffffff811f2168>] SyS_readahead+0xa8/0xc0
> [ 2096.093106] [<ffffffff81003c9c>] do_syscall_64+0x6c/0x1e0
> [ 2096.099234] [<ffffffff817d4a3f>] entry_SYSCALL64_slow_path+0x25/0x25
> [ 2096.106427] 1 lock held by trinity-c9/3136:
> [ 2096.111097] #0: (&xfs_nondir_ilock_class){++++..}, at:
> [<ffffffffa03335fa>] xfs_ilock+0xfa/0x260 [xfs]
>
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