[....] Starting enhanced syslogd: rsyslogd[ 13.301392] audit: type=1400 audit(1517078259.091:5): avc: denied { syslog } for pid=3524 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.975965] audit: type=1400 audit(1517078264.765:6): avc: denied { map } for pid=3666 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.37' (ECDSA) to the list of known hosts. executing program executing program executing program [ 25.248485] audit: type=1400 audit(1517078271.038:7): avc: denied { map } for pid=3680 comm="syzkaller318382" path="/root/syzkaller318382748" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 31.909735] WARNING: CPU: 1 PID: 5105 at kernel/events/core.c:331 event_function_local.constprop.102+0x494/0x560 [ 31.920846] Kernel panic - not syncing: panic_on_warn set ... [ 31.920846] [ 31.928181] CPU: 1 PID: 5105 Comm: syzkaller318382 Not tainted 4.15.0-rc8+ #8 [ 31.935452] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.944778] Call Trace: [ 31.947331] [ 31.949457] dump_stack+0x194/0x257 [ 31.953055] ? arch_local_irq_restore+0x53/0x53 [ 31.957695] ? vsnprintf+0x1ed/0x1900 [ 31.961467] panic+0x1e4/0x41c [ 31.964630] ? refcount_error_report+0x214/0x214 [ 31.969367] ? show_regs_print_info+0x18/0x18 [ 31.973856] ? __warn+0x1c1/0x200 [ 31.977290] ? event_function_local.constprop.102+0x494/0x560 [ 31.983144] __warn+0x1dc/0x200 [ 31.986396] ? event_function_local.constprop.102+0x494/0x560 [ 31.992253] report_bug+0x211/0x2d0 [ 31.995869] fixup_bug.part.11+0x37/0x80 [ 31.999901] do_error_trap+0x2d7/0x3e0 [ 32.003766] ? math_error+0x400/0x400 [ 32.007545] ? lock_acquire+0x1d5/0x580 [ 32.011491] ? lock_acquire+0x1d5/0x580 [ 32.015441] ? event_function_local.constprop.102+0x20e/0x560 [ 32.021307] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.026133] do_invalid_op+0x1b/0x20 [ 32.029819] invalid_op+0x22/0x40 [ 32.033244] RIP: 0010:event_function_local.constprop.102+0x494/0x560 [ 32.039701] RSP: 0018:ffff8801db307d00 EFLAGS: 00010006 [ 32.045033] RAX: ffff8801d902a180 RBX: ffff8801d60beac0 RCX: ffffffff81862a54 [ 32.052274] RDX: 0000000000010000 RSI: ffff8801db3079f0 RDI: ffff8801d60bebc8 [ 32.059520] RBP: ffff8801db307da0 R08: 1ffff1003b660edf R09: 000000000000000c [ 32.066764] R10: ffff8801db307bb8 R11: 0000000000000044 R12: ffff8801db330e00 [ 32.074004] R13: 1ffff1003b660fa3 R14: ffff8801d90841c0 R15: ffff8801d979ce40 [ 32.081259] ? event_function_local.constprop.102+0x494/0x560 [ 32.087119] ? __perf_event_disable+0xa80/0xa80 [ 32.091760] ? do_raw_spin_trylock+0x190/0x190 [ 32.096322] ? lapic_next_event+0x54/0x80 [ 32.100446] perf_pending_event+0x1e5/0x240 [ 32.104744] irq_work_run_list+0x184/0x240 [ 32.108949] ? irq_work_sync+0x1a0/0x1a0 [ 32.112985] irq_work_run+0x1d/0x50 [ 32.116587] smp_irq_work_interrupt+0x103/0x640 [ 32.121226] ? smp_x86_platform_ipi+0x560/0x560 [ 32.125866] ? _raw_spin_lock+0x32/0x40 [ 32.129817] ? task_prio+0x40/0x40 [ 32.133331] ? rcu_eqs_enter_common.constprop.69+0x21a/0x300 [ 32.139104] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.143923] irq_work_interrupt+0xa9/0xb0 [ 32.148038] [ 32.150247] RIP: 0010:_raw_spin_unlock_irqrestore+0x5e/0xba [ 32.155924] RSP: 0018:ffff8801d4727670 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff09 [ 32.163604] RAX: dffffc0000000000 RBX: 0000000000000282 RCX: 0000000000000000 [ 32.170847] RDX: 1ffffffff0d5918d RSI: 0000000000000001 RDI: 0000000000000282 [ 32.178087] RBP: ffff8801d4727680 R08: 0000000000000000 R09: 0000000000000000 [ 32.185326] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801d9084978 [ 32.192566] R13: ffff8801d9084978 R14: ffff8801d90841c0 R15: 0000000000000001 [ 32.199911] try_to_wake_up+0xf9/0x1600 [ 32.203858] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 32.208846] ? migrate_swap_stop+0x970/0x970 [ 32.213238] ? find_held_lock+0x35/0x1d0 [ 32.217275] ? futex_wake+0x566/0x680 [ 32.221046] ? lock_downgrade+0x980/0x980 [ 32.225165] ? lock_release+0xa40/0xa40 [ 32.229111] ? do_raw_spin_trylock+0x190/0x190 [ 32.233663] ? __unqueue_futex+0x290/0x290 [ 32.237874] wake_up_q+0x8a/0xe0 [ 32.241212] futex_wake+0x572/0x680 [ 32.244811] ? get_futex_key+0x1d50/0x1d50 [ 32.249018] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 32.254187] do_futex+0x11b0/0x22a0 [ 32.257785] ? wake_up_new_task+0x62b/0xc00 [ 32.262081] ? exit_robust_list+0x240/0x240 [ 32.266384] ? check_noncircular+0x20/0x20 [ 32.270590] ? put_pid+0x183/0x1f0 [ 32.274101] ? task_active_pid_ns+0xd0/0xd0 [ 32.278394] ? check_noncircular+0x20/0x20 [ 32.282599] ? _do_fork+0x2e4/0xfe0 [ 32.286198] ? find_held_lock+0x35/0x1d0 [ 32.290235] ? SyS_futex+0x2d3/0x390 [ 32.293920] ? lock_downgrade+0x980/0x980 [ 32.298056] ? pvclock_read_flags+0x160/0x160 [ 32.302524] ? __might_fault+0x110/0x1d0 [ 32.306554] ? lock_downgrade+0x980/0x980 [ 32.310677] ? ktime_get+0x15c/0x3a0 [ 32.314365] ? kvm_clock_get_cycles+0x25/0x30 [ 32.318829] ? ktime_get+0x26f/0x3a0 [ 32.322512] ? ktime_get_resolution_ns+0x300/0x300 [ 32.327414] ? __might_sleep+0x95/0x190 [ 32.331365] ? kasan_check_write+0x14/0x20 [ 32.335570] SyS_futex+0x260/0x390 [ 32.339088] ? do_futex+0x22a0/0x22a0 [ 32.342861] ? entry_SYSCALL_64_fastpath+0x5/0xa0 [ 32.347687] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 32.352680] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 32.357414] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 32.362143] RIP: 0033:0x446159 [ 32.365308] RSP: 002b:00007ffe873e8f78 EFLAGS: 00000202 ORIG_RAX: 00000000000000ca [ 32.372985] RAX: ffffffffffffffda RBX: 00007f9b83c81700 RCX: 0000000000446159 [ 32.380226] RDX: 0000000000446159 RSI: 0000000000000001 RDI: 00000000006debe4 [ 32.387465] RBP: 00007ffe873e8fa0 R08: 0000000000000000 R09: 0000000000000000 [ 32.394705] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000 [ 32.401943] R13: 00007ffe873e8eff R14: 00007f9b83c819c0 R15: 0000000000000004 [ 32.409196] [ 32.409198] ====================================================== [ 32.409200] WARNING: possible circular locking dependency detected [ 32.409201] 4.15.0-rc8+ #8 Not tainted [ 32.409203] ------------------------------------------------------ [ 32.409204] syzkaller318382/5105 is trying to acquire lock: [ 32.409205] ((console_sem).lock){-.-.}, at: [<000000003463de8d>] down_trylock+0x13/0x70 [ 32.409209] [ 32.409210] but task is already holding lock: [ 32.409211] (&ctx->lock){-.-.}, at: [<00000000c5b20a00>] event_function_local.constprop.102+0x20e/0x560 [ 32.409215] [ 32.409216] which lock already depends on the new lock. [ 32.409217] [ 32.409218] [ 32.409219] the existing dependency chain (in reverse order) is: [ 32.409220] [ 32.409221] -> #3 (&ctx->lock){-.-.}: [ 32.409225] _raw_spin_lock+0x2a/0x40 [ 32.409226] __perf_event_task_sched_out+0x9b6/0x14b0 [ 32.409227] __schedule+0xd5c/0x2060 [ 32.409228] schedule+0xf5/0x430 [ 32.409230] futex_wait_queue_me+0x3ed/0x7e0 [ 32.409231] futex_wait+0x34b/0x9a0 [ 32.409232] do_futex+0x11ec/0x22a0 [ 32.409233] SyS_futex+0x260/0x390 [ 32.409234] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 32.409235] [ 32.409236] -> #2 (&rq->lock){-.-.}: [ 32.409239] _raw_spin_lock+0x2a/0x40 [ 32.409241] task_fork_fair+0x7a/0x690 [ 32.409242] sched_fork+0x435/0xc00 [ 32.409243] copy_process.part.38+0x174b/0x4b20 [ 32.409244] _do_fork+0x1f7/0xfe0 [ 32.409245] kernel_thread+0x34/0x40 [ 32.409246] rest_init+0x22/0xf0 [ 32.409248] start_kernel+0x7f1/0x819 [ 32.409249] x86_64_start_reservations+0x2a/0x2c [ 32.409250] x86_64_start_kernel+0x77/0x7a [ 32.409251] secondary_startup_64+0xa5/0xb0 [ 32.409252] [ 32.409253] -> #1 (&p->pi_lock){-.-.}: [ 32.409257] _raw_spin_lock_irqsave+0x96/0xc0 [ 32.409258] try_to_wake_up+0xbc/0x1600 [ 32.409259] wake_up_process+0x10/0x20 [ 32.409260] __up.isra.0+0x1cc/0x2c0 [ 32.409261] up+0x13b/0x1d0 [ 32.409263] __up_console_sem+0xb2/0x1a0 [ 32.409264] console_unlock+0x538/0xd80 [ 32.409265] vprintk_emit+0x4ad/0x590 [ 32.409266] vprintk_default+0x28/0x30 [ 32.409267] vprintk_func+0x57/0xc0 [ 32.409268] printk+0xaa/0xca [ 32.409269] regdb_fw_cb+0x1d7/0x220 [ 32.409271] request_firmware_work_func+0x151/0x2c0 [ 32.409272] process_one_work+0xbbf/0x1b10 [ 32.409273] worker_thread+0x223/0x1990 [ 32.409274] kthread+0x33c/0x400 [ 32.409275] ret_from_fork+0x3a/0x50 [ 32.409276] [ 32.409277] -> #0 ((console_sem).lock){-.-.}: [ 32.409281] lock_acquire+0x1d5/0x580 [ 32.409282] _raw_spin_lock_irqsave+0x96/0xc0 [ 32.409283] down_trylock+0x13/0x70 [ 32.409285] __down_trylock_console_sem+0xa2/0x1e0 [ 32.409286] console_trylock+0x15/0x100 [ 32.409287] vprintk_emit+0x49b/0x590 [ 32.409288] vprintk_default+0x28/0x30 [ 32.409289] vprintk_func+0x57/0xc0 [ 32.409290] printk+0xaa/0xca [ 32.409291] __warn+0x9e/0x200 [ 32.409293] report_bug+0x211/0x2d0 [ 32.409294] fixup_bug.part.11+0x37/0x80 [ 32.409295] do_error_trap+0x2d7/0x3e0 [ 32.409296] do_invalid_op+0x1b/0x20 [ 32.409297] invalid_op+0x22/0x40 [ 32.409299] event_function_local.constprop.102+0x494/0x560 [ 32.409300] perf_pending_event+0x1e5/0x240 [ 32.409301] irq_work_run_list+0x184/0x240 [ 32.409302] irq_work_run+0x1d/0x50 [ 32.409304] smp_irq_work_interrupt+0x103/0x640 [ 32.409305] irq_work_interrupt+0xa9/0xb0 [ 32.409306] _raw_spin_unlock_irqrestore+0x5e/0xba [ 32.409308] try_to_wake_up+0xf9/0x1600 [ 32.409309] wake_up_q+0x8a/0xe0 [ 32.409310] futex_wake+0x572/0x680 [ 32.409311] do_futex+0x11b0/0x22a0 [ 32.409312] SyS_futex+0x260/0x390 [ 32.409313] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 32.409314] [ 32.409315] other info that might help us debug this: [ 32.409316] [ 32.409317] Chain exists of: [ 32.409318] (console_sem).lock --> &rq->lock --> &ctx->lock [ 32.409323] [ 32.409324] Possible unsafe locking scenario: [ 32.409324] [ 32.409326] CPU0 CPU1 [ 32.409327] ---- ---- [ 32.409327] lock(&ctx->lock); [ 32.409330] lock(&rq->lock); [ 32.409333] lock(&ctx->lock); [ 32.409335] lock((console_sem).lock); [ 32.409337] [ 32.409338] *** DEADLOCK *** [ 32.409339] [ 32.409340] 2 locks held by syzkaller318382/5105: [ 32.409341] #0: (&cpuctx_lock){-.-.}, at: [<0000000091388292>] event_function_local.constprop.102+0x1f7/0x560 [ 32.409346] #1: (&ctx->lock){-.-.}, at: [<00000000c5b20a00>] event_function_local.constprop.102+0x20e/0x560 [ 32.409350] [ 32.409351] stack backtrace: [ 32.409353] CPU: 1 PID: 5105 Comm: syzkaller318382 Not tainted 4.15.0-rc8+ #8 [ 32.409355] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.409356] Call Trace: [ 32.409357] [ 32.409358] dump_stack+0x194/0x257 [ 32.409359] ? arch_local_irq_restore+0x53/0x53 [ 32.409361] print_circular_bug.isra.37+0x2cd/0x2dc [ 32.409362] ? save_trace+0xe0/0x2b0 [ 32.409363] __lock_acquire+0x30a8/0x3e00 [ 32.409364] ? scnprintf+0x110/0x110 [ 32.409365] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 32.409367] ? __sprint_symbol+0x183/0x280 [ 32.409368] ? event_function_local.constprop.102+0x494/0x560 [ 32.409369] ? kallsyms_lookup+0x270/0x270 [ 32.409371] ? widen_string+0xa1/0x1e0 [ 32.409372] ? string+0x180/0x200 [ 32.409373] ? symbol_string+0x150/0x210 [ 32.409374] ? event_function_local.constprop.102+0x494/0x560 [ 32.409375] ? flags_string+0x300/0x300 [ 32.409377] ? check_noncircular+0x20/0x20 [ 32.409378] ? check_noncircular+0x20/0x20 [ 32.409379] ? put_dec_trunc8+0x13f/0x2d0 [ 32.409380] ? put_dec+0x2e/0xd0 [ 32.409381] lock_acquire+0x1d5/0x580 [ 32.409382] ? lock_acquire+0x1d5/0x580 [ 32.409383] ? down_trylock+0x13/0x70 [ 32.409385] ? find_held_lock+0x35/0x1d0 [ 32.409386] ? lock_release+0xa40/0xa40 [ 32.409387] ? vprintk_emit+0x379/0x590 [ 32.409388] ? lock_downgrade+0x980/0x980 [ 32.409389] ? kvm_sched_clock_read+0x25/0x40 [ 32.409390] ? sched_clock+0x31/0x40 [ 32.409396] ? sched_clock_cpu+0x1b/0x170 [ 32.409397] ? vprintk_emit+0x49b/0x590 [ 32.409398] _raw_spin_lock_irqsave+0x96/0xc0 [ 32.409399] ? down_trylock+0x13/0x70 [ 32.409400] down_trylock+0x13/0x70 [ 32.409401] ? vprintk_emit+0x49b/0x590 [ 32.409403] __down_trylock_console_sem+0xa2/0x1e0 [ 32.409404] console_trylock+0x15/0x100 [ 32.409405] vprintk_emit+0x49b/0x590 [ 32.409406] ? event_function_local.constprop.102+0x494/0x560 [ 32.409407] vprintk_default+0x28/0x30 [ 32.409408] vprintk_func+0x57/0xc0 [ 32.409409] printk+0xaa/0xca [ 32.409411] ? show_regs_print_info+0x18/0x18 [ 32.409412] ? event_function_local.constprop.102+0x494/0x560 [ 32.409414] ? event_function_local.constprop.102+0x494/0x560 [ 32.409415] __warn+0x9e/0x200 [ 32.409416] ? event_function_local.constprop.102+0x494/0x560 [ 32.409417] report_bug+0x211/0x2d0 [ 32.409419] fixup_bug.part.11+0x37/0x80 [ 32.409420] do_error_trap+0x2d7/0x3e0 [ 32.409421] ? math_error+0x400/0x400 [ 32.409422] ? lock_acquire+0x1d5/0x580 [ 32.409423] ? lock_acquire+0x1d5/0x580 [ 32.409425] ? event_function_local.constprop.102+0x20e/0x560 [ 32.409426] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.409427] do_invalid_op+0x1b/0x20 [ 32.409428] invalid_op+0x22/0x40 [ 32.409430] RIP: 0010:event_function_local.constprop.102+0x494/0x560 [ 32.409431] RSP: 0018:ffff8801db307d00 EFLAGS: 00010006 [ 32.409434] RAX: ffff8801d902a180 RBX: ffff8801d60beac0 RCX: ffffffff81862a54 [ 32.409436] RDX: 0000000000010000 RSI: ffff8801db3079f0 RDI: ffff8801d60bebc8 [ 32.409437] RBP: ffff8801db307da0 R08: 1ffff1003b660edf R09: 000000000000000c [ 32.409439] R10: ffff8801db307bb8 R11: 0000000000000044 R12: ffff8801db330e00 [ 32.409441] R13: 1ffff1003b660fa3 R14: ffff8801d90841c0 R15: ffff8801d979ce40 [ 32.409442] ? event_function_local.constprop.102+0x494/0x560 [ 32.409444] ? __perf_event_disable+0xa80/0xa80 [ 32.409445] ? do_raw_spin_trylock+0x190/0x190 [ 32.409446] ? lapic_next_event+0x54/0x80 [ 32.409447] perf_pending_event+0x1e5/0x240 [ 32.409449] irq_work_run_list+0x184/0x240 [ 32.409450] ? irq_work_sync+0x1a0/0x1a0 [ 32.409451] irq_work_run+0x1d/0x50 [ 32.409452] smp_irq_work_interrupt+0x103/0x640 [ 32.409454] ? smp_x86_platform_ipi+0x560/0x560 [ 32.409455] ? _raw_spin_lock+0x32/0x40 [ 32.409456] ? task_prio+0x40/0x40 [ 32.409457] ? rcu_eqs_enter_common.constprop.69+0x21a/0x300 [ 32.409459] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.409460] irq_work_interrupt+0xa9/0xb0 [ 32.409461] [ 32.409462] RIP: 0010:_raw_spin_unlock_irqrestore+0x5e/0xba [ 32.409464] RSP: 0018:ffff8801d4727670 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff09 [ 32.409467] RAX: dffffc0000000000 RBX: 0000000000000282 RCX: 0000000000000000 [ 32.409469] RDX: 1ffffffff0d5918d RSI: 0000000000000001 RDI: 0000000000000282 [ 32.409471] RBP: ffff8801d4727680 R08: 0000000000000000 R09: 0000000000000000 [ 32.409472] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801d9084978 [ 32.409474] R13: ffff8801d9084978 R14: ffff8801d90841c0 R15: 0000000000000001 [ 32.409475] try_to_wake_up+0xf9/0x1600 [ 32.409477] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 32.409478] ? migrate_swap_stop+0x970/0x970 [ 32.409479] ? find_held_lock+0x35/0x1d0 [ 32.409480] ? futex_wake+0x566/0x680 [ 32.409481] ? lock_downgrade+0x980/0x980 [ 32.409483] ? lock_release+0xa40/0xa40 [ 32.409484] ? do_raw_spin_trylock+0x190/0x190 [ 32.409485] ? __unqueue_futex+0x290/0x290 [ 32.409486] wake_up_q+0x8a/0xe0 [ 32.409487] futex_wake+0x572/0x680 [ 32.409488] ? get_futex_key+0x1d50/0x1d50 [ 32.409490] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 32.409491] do_futex+0x11b0/0x22a0 [ 32.409492] ? wake_up_new_task+0x62b/0xc00 [ 32.409493] ? exit_robust_list+0x240/0x240 [ 32.409494] ? check_noncircular+0x20/0x20 [ 32.409496] ? put_pid+0x183/0x1f0 [ 32.409497] ? task_active_pid_ns+0xd0/0xd0 [ 32.409498] ? check_noncircular+0x20/0x20 [ 32.409499] ? _do_fork+0x2e4/0xfe0 [ 32.409500] ? find_held_lock+0x35/0x1d0 [ 32.409501] ? SyS_futex+0x2d3/0x390 [ 32.409503] ? lock_downgrade+0x980/0x980 [ 32.409504] ? pvclock_read_flags+0x160/0x160 [ 32.409505] ? __might_fault+0x110/0x1d0 [ 32.409506] ? lock_downgrade+0x980/0x980 [ 32.409507] ? ktime_get+0x15c/0x3a0 [ 32.409509] ? kvm_clock_get_cycles+0x25/0x30 [ 32.409510] ? ktime_get+0x26f/0x3a0 [ 32.409511] ? ktime_get_resolution_ns+0x300/0x300 [ 32.409512] ? __might_sleep+0x95/0x190 [ 32.409513] ? kasan_check_write+0x14/0x20 [ 32.409514] SyS_futex [ 32.409517] Lost 13 message(s)! [ 33.480147] Shutting down cpus with NMI [ 34.518317] Dumping ftrace buffer: [ 34.521828] (ftrace buffer empty) [ 34.525505] Kernel Offset: disabled [ 34.529102] Rebooting in 86400 seconds..