| TITLE: INFO: task hung in do_exit |
| |
| [ 246.752196] INFO: task syz-executor0:10244 blocked for more than 120 seconds. |
| [ 246.759582] Not tainted 4.15.0-rc8+ #269 |
| [ 246.764192] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. |
| [ 246.772168] syz-executor0 D23984 10244 4352 0x80000004 |
| [ 246.777823] Call Trace: |
| [ 246.780435] __schedule+0x8eb/0x2060 |
| [ 246.784180] ? __sched_text_start+0x8/0x8 |
| [ 246.788352] ? check_noncircular+0x20/0x20 |
| [ 246.792606] ? debug_check_no_locks_freed+0x3c0/0x3c0 |
| [ 246.797849] ? print_irqtrace_events+0x270/0x270 |
| [ 246.802631] schedule+0xf5/0x430 |
| [ 246.806033] ? lock_downgrade+0x980/0x980 |
| [ 246.810191] ? __schedule+0x2060/0x2060 |
| [ 246.814184] ? lock_release+0xa40/0xa40 |
| [ 246.818204] ? mark_held_locks+0xaf/0x100 |
| [ 246.822368] ? _raw_spin_unlock_irq+0x27/0x70 |
| [ 246.826872] ? rwsem_down_read_failed+0x3fc/0x6e0 |
| [ 246.831729] ? trace_hardirqs_on_caller+0x421/0x5c0 |
| [ 246.836776] ? rwsem_down_read_failed+0x3fc/0x6e0 |
| [ 246.841630] rwsem_down_read_failed+0x401/0x6e0 |
| [ 246.846320] ? rt_mutex_futex_unlock+0x110/0x110 |
| [ 246.851121] ? lock_acquire+0x1d5/0x580 |
| [ 246.855100] ? lock_acquire+0x1d5/0x580 |
| [ 246.859109] ? __might_sleep+0x95/0x190 |
| [ 246.863104] call_rwsem_down_read_failed+0x18/0x30 |
| [ 246.868040] ? call_rwsem_down_read_failed+0x18/0x30 |
| [ 246.873269] down_read+0xa4/0x150 |
| [ 246.876727] ? do_exit+0x4b0/0x1ad0 |
| [ 246.880365] ? __down_interruptible+0x6b0/0x6b0 |
| [ 246.885080] ? trace_hardirqs_on+0xd/0x10 |
| [ 246.889260] ? _raw_spin_unlock_irq+0x27/0x70 |
| [ 246.893783] ? sync_mm_rss+0x113/0x180 |
| [ 246.897704] do_exit+0x4b0/0x1ad0 |
| [ 246.901194] ? try_to_wake_up+0xf9/0x1600 |
| [ 246.905370] ? mm_update_next_owner+0x930/0x930 |
| [ 246.910069] ? debug_check_no_locks_freed+0x3c0/0x3c0 |
| [ 246.915297] ? print_irqtrace_events+0x270/0x270 |
| [ 246.920091] ? __rwsem_down_write_failed_common+0x100d/0x1530 |
| [ 246.926048] ? perf_trace_lock_acquire+0xe3/0x980 |
| [ 246.930926] ? perf_trace_lock+0x900/0x900 |
| [ 246.935185] ? check_noncircular+0x20/0x20 |
| [ 246.939451] ? __rwsem_down_write_failed_common+0x1015/0x1530 |
| [ 246.945382] ? rwsem_spin_on_owner+0x7e0/0x7e0 |
| [ 246.950044] ? find_held_lock+0x35/0x1d0 |
| [ 246.954141] ? get_signal+0x7ae/0x16c0 |
| [ 246.958055] ? lock_downgrade+0x980/0x980 |
| [ 246.962244] do_group_exit+0x149/0x400 |
| [ 246.966158] ? do_raw_spin_trylock+0x190/0x190 |
| [ 246.970774] ? SyS_exit+0x30/0x30 |
| [ 246.974255] ? _raw_spin_unlock_irq+0x27/0x70 |
| [ 246.978775] ? trace_hardirqs_on_caller+0x421/0x5c0 |
| [ 246.983826] get_signal+0x73f/0x16c0 |
| [ 246.987614] ? ptrace_notify+0x130/0x130 |
| [ 246.991714] ? exit_robust_list+0x240/0x240 |
| [ 246.996051] ? find_held_lock+0x35/0x1d0 |
| [ 247.000163] ? find_held_lock+0x35/0x1d0 |
| [ 247.004277] do_signal+0x90/0x1eb0 |
| [ 247.007844] ? vm_mmap_pgoff+0x198/0x280 |
| [ 247.011929] ? lock_downgrade+0x980/0x980 |
| [ 247.016107] ? lock_release+0xa40/0xa40 |
| [ 247.020106] ? setup_sigcontext+0x7d0/0x7d0 |
| [ 247.024476] ? rwsem_down_write_failed_killable+0xe/0x10 |
| [ 247.029957] ? call_rwsem_down_write_failed_killable+0x17/0x30 |
| [ 247.035972] ? down_read_killable+0x180/0x180 |
| [ 247.040614] ? security_mmap_file+0x143/0x180 |
| [ 247.045157] ? exit_to_usermode_loop+0x8c/0x310 |
| [ 247.049860] exit_to_usermode_loop+0x214/0x310 |
| [ 247.054577] ? trace_event_raw_event_sys_exit+0x260/0x260 |
| [ 247.060172] syscall_return_slowpath+0x490/0x550 |
| [ 247.064958] ? prepare_exit_to_usermode+0x340/0x340 |
| [ 247.069996] ? entry_SYSCALL_64_fastpath+0x73/0xa0 |
| [ 247.074960] ? trace_hardirqs_on_caller+0x421/0x5c0 |
| [ 247.080010] ? trace_hardirqs_on_thunk+0x1a/0x1c |
| [ 247.084836] entry_SYSCALL_64_fastpath+0x9e/0xa0 |
| [ 247.089613] RIP: 0033:0x452f3a |
| [ 247.092814] RSP: 002b:0000000000a2f728 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 |
| [ 247.100553] RAX: fffffffffffffffc RBX: 0000000000000003 RCX: 0000000000452f3a |
| [ 247.107852] RDX: 0000000000000003 RSI: 0000000000021000 RDI: 0000000000000000 |
| [ 247.115144] RBP: ffffffffffffffff R08: ffffffffffffffff R09: 0000000000000000 |
| [ 247.122428] R10: 0000000000020022 R11: 0000000000000246 R12: 0000000000000000 |
| [ 247.129725] R13: 0000000000021000 R14: 0000000000020022 R15: 0000000000000000 |
