xfstests: aio hang (323)
generic/323 134s ... [ 1589.413117][ T269] INFO: task aio-last-ref-he:4134 blocked for more than 120 seconds. [ 1589.446716][ T269] Not tainted 5.4.0-rc5 #2 [ 1589.467363][ T269] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1589.502932][ T269] aio-last-ref-he D 0 4134 3917 0x80004080 [ 1589.529400][ T269] Call Trace: [ 1589.543807][ T269] __schedule+0x286/0x810 [ 1589.562032][ T269] ? wait_for_completion+0x100/0x160 [ 1589.584351][ T269] schedule+0x44/0xd0 [ 1589.601114][ T269] schedule_timeout+0x275/0x3b0 [ 1589.621716][ T269] ? wait_for_completion+0x117/0x160 [ 1589.644215][ T269] ? lockdep_hardirqs_on+0xf6/0x190 [ 1589.666123][ T269] ? _raw_spin_unlock_irq+0x28/0x40 [ 1589.688144][ T269] ? trace_hardirqs_on+0x22/0xf0 [ 1589.709066][ T269] ? wait_for_completion+0x100/0x160 [ 1589.731382][ T269] wait_for_completion+0x11f/0x160 [ 1589.753110][ T269] ? wake_up_q+0x70/0x70 [ 1589.771585][ T269] exit_aio+0xe7/0xf0 [ 1589.788707][ T269] mmput+0x34/0x140 [ 1589.805422][ T269] do_exit+0x2bc/0xc30 [ 1589.822693][ T269] ? find_held_lock+0x31/0x90 [ 1589.842458][ T269] do_group_exit+0x4b/0xc0 [ 1589.861430][ T269] get_signal+0x167/0xc60 [ 1589.879768][ T269] ? _raw_spin_unlock_irq+0x28/0x40 [ 1589.901714][ T269] ? trace_hardirqs_on+0x22/0xf0 [ 1589.918982][ T269] do_signal+0x2f/0x270 [ 1589.927629][ T269] ? rcu_read_lock_sched_held+0x4a/0x80 [ 1589.938938][ T269] ? kfree+0x2bc/0x320 [ 1589.947186][ T269] ? lockdep_hardirqs_on+0xf6/0x190 [ 1589.957704][ T269] ? exit_to_usermode_loop+0x45/0xb0 [ 1589.968380][ T269] exit_to_usermode_loop+0x5d/0xb0 [ 1589.978700][ T269] do_syscall_64+0x13c/0x180 [ 1589.987971][ T269] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1589.999761][ T269] RIP: 0033:0x7f2cb83a11fd [ 1590.008638][ T269] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 8 [ 1590.047415][ T269] RSP: 002b:00007f2b93ffe808 EFLAGS: 00000246 ORIG_RAX: 00000000000000cf [ 1590.064194][ T269] RAX: 0000000000000000 RBX: 00007f2b93fff680 RCX: 00007f2cb83a11fd [ 1590.080089][ T269] RDX: 00007f2cb8481a5b RSI: 00007f2b93ffe8c0 RDI: 00007f2cb84a3000 [ 1590.096060][ T269] RBP: 00007f2cb84a3000 R08: 00007f2b93ffee80 R09: 0000000000000001 [ 1590.111997][ T269] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 1590.127923][ T269] R13: 000000000000000a R14: 00007f2b93fff700 R15: 0000000000000007 [ 1590.143873][ T269] [ 1590.143873][ T269] Showing all locks held in the system: [ 1590.159328][ T269] 1 lock held by khungtaskd/269: [ 1590.169310][ T269] #0: ffffffff82262800 (rcu_read_lock){....}, at: rcu_lock_acquire.constprop.0+0x0/0x30 [ 1590.188982][ T269] [ 1590.193932][ T269] =============================================