[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 19.910920] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.813229] random: sshd: uninitialized urandom read (32 bytes read) [ 22.211483] random: sshd: uninitialized urandom read (32 bytes read) [ 23.003276] random: sshd: uninitialized urandom read (32 bytes read) [ 23.175294] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.49' (ECDSA) to the list of known hosts. [ 28.641574] random: sshd: uninitialized urandom read (32 bytes read) [ 28.747317] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 32.401341] ------------[ cut here ]------------ [ 32.407533] ODEBUG: free active (active state 0) object type: work_struct hint: smc_tx_work+0x0/0x350 [ 32.417033] WARNING: CPU: 0 PID: 5254 at lib/debugobjects.c:329 debug_print_object+0x16a/0x210 [ 32.425774] Kernel panic - not syncing: panic_on_warn set ... [ 32.425774] [ 32.433121] CPU: 0 PID: 5254 Comm: syz-executor351 Not tainted 4.17.0-rc6+ #64 [ 32.440455] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.449782] Call Trace: [ 32.452353] dump_stack+0x1b9/0x294 [ 32.455962] ? dump_stack_print_info.cold.2+0x52/0x52 [ 32.461140] ? debug_print_object+0x90/0x210 [ 32.465528] panic+0x22f/0x4de [ 32.468700] ? add_taint.cold.5+0x16/0x16 [ 32.472829] ? __warn.cold.8+0x148/0x1b3 [ 32.476878] ? __warn.cold.8+0x117/0x1b3 [ 32.480931] ? debug_print_object+0x16a/0x210 [ 32.485406] __warn.cold.8+0x163/0x1b3 [ 32.489277] ? debug_print_object+0x16a/0x210 [ 32.493759] report_bug+0x252/0x2d0 [ 32.497375] do_error_trap+0x1de/0x490 [ 32.501246] ? math_error+0x420/0x420 [ 32.505034] ? fork_usermode_blob+0x1a0/0x1a0 [ 32.509537] ? vprintk_default+0x28/0x30 [ 32.513579] ? vprintk_func+0x81/0xe7 [ 32.517359] ? printk+0x9e/0xba [ 32.520622] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.525444] do_invalid_op+0x1b/0x20 [ 32.529151] invalid_op+0x14/0x20 [ 32.532599] RIP: 0010:debug_print_object+0x16a/0x210 [ 32.537676] RSP: 0018:ffff8801c6f67158 EFLAGS: 00010082 [ 32.543024] RAX: 0000000000000059 RBX: 0000000000000003 RCX: ffffffff818435f8 [ 32.550274] RDX: 0000000000000000 RSI: ffffffff8160f2c1 RDI: 0000000000000001 [ 32.557535] RBP: ffff8801c6f67198 R08: ffff8801cb640580 R09: ffffed003b5c3eb2 [ 32.564786] R10: ffffed003b5c3eb2 R11: ffff8801dae1f597 R12: 0000000000000001 [ 32.572038] R13: ffffffff88d5f040 R14: ffffffff87fa2a00 R15: ffffffff814ccb10 [ 32.579297] ? fork_usermode_blob+0x1a0/0x1a0 [ 32.583774] ? irq_work_queue+0x28/0x130 [ 32.587817] ? vprintk_func+0x81/0xe7 [ 32.591614] ? debug_print_object+0x16a/0x210 [ 32.596094] debug_check_no_obj_freed+0x3a6/0x584 [ 32.600932] ? free_obj_work+0xb90/0xb90 [ 32.604989] ? debug_check_no_locks_freed+0x204/0x310 [ 32.610187] kmem_cache_free+0x216/0x2d0 [ 32.614234] __sk_destruct+0x6fe/0xa40 [ 32.618104] ? find_held_lock+0x36/0x1c0 [ 32.622159] ? sock_warn_obsolete_bsdism+0xb0/0xb0 [ 32.627072] ? lock_downgrade+0x8e0/0x8e0 [ 32.631198] ? refcount_sub_and_test+0x212/0x330 [ 32.635932] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 32.640666] ? lock_downgrade+0x8e0/0x8e0 [ 32.644793] ? __local_bh_enable_ip+0x161/0x230 [ 32.649443] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 32.654446] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 32.660146] ? refcount_sub_and_test+0x212/0x330 [ 32.664880] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 32.669616] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 32.674357] ? smc_rx_data_available+0x100/0x100 [ 32.679098] sk_destruct+0x78/0x90 [ 32.682619] __sk_free+0xcf/0x300 [ 32.686062] sk_free+0x42/0x50 [ 32.689235] smc_release+0x459/0x610 [ 32.692928] sock_release+0x96/0x1b0 [ 32.696637] ? sock_alloc_file+0x4e0/0x4e0 [ 32.700850] sock_close+0x16/0x20 [ 32.704287] __fput+0x34d/0x890 [ 32.707546] ? fput+0x1a0/0x1a0 [ 32.710805] ? _raw_spin_unlock_irq+0x27/0x70 [ 32.715280] ____fput+0x15/0x20 [ 32.718540] task_work_run+0x1e4/0x290 [ 32.722412] ? task_work_cancel+0x240/0x240 [ 32.726729] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 32.732248] ? switch_task_namespaces+0xa2/0xd0 [ 32.736901] do_exit+0x1aee/0x2730 [ 32.740428] ? mm_update_next_owner+0x980/0x980 [ 32.745085] ? kasan_check_read+0x11/0x20 [ 32.749225] ? do_raw_spin_unlock+0x9e/0x2e0 [ 32.753630] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 32.758204] ? _raw_spin_unlock+0x22/0x30 [ 32.762332] ? __queue_work+0x685/0x13f0 [ 32.766384] ? release_sock+0x1e2/0x2b0 [ 32.770338] ? trace_hardirqs_on+0xd/0x10 [ 32.774467] ? flush_rcu_work+0x90/0x90 [ 32.778424] ? graph_lock+0x170/0x170 [ 32.782216] ? graph_lock+0x170/0x170 [ 32.786008] ? detach_if_pending+0x6e0/0x6e0 [ 32.790409] ? find_held_lock+0x36/0x1c0 [ 32.794453] ? lock_downgrade+0x8e0/0x8e0 [ 32.798586] ? kasan_check_read+0x11/0x20 [ 32.802715] ? do_raw_spin_unlock+0x9e/0x2e0 [ 32.807108] ? __local_bh_enable_ip+0x161/0x230 [ 32.811755] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 32.816751] ? release_sock+0x1e2/0x2b0 [ 32.820702] ? trace_hardirqs_on+0xd/0x10 [ 32.824829] ? __local_bh_enable_ip+0x161/0x230 [ 32.829482] ? _raw_spin_unlock_bh+0x30/0x40 [ 32.833871] ? release_sock+0x1e2/0x2b0 [ 32.837828] ? __release_sock+0x3a0/0x3a0 [ 32.841962] ? __local_bh_enable_ip+0x161/0x230 [ 32.846618] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 32.851811] ? smc_setsockopt+0x1ed/0x6d0 [ 32.855949] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 32.861485] ? __sys_setsockopt+0x24f/0x390 [ 32.865787] do_group_exit+0x16f/0x430 [ 32.869654] ? mm_fault_error+0x380/0x380 [ 32.873783] ? __ia32_sys_exit+0x50/0x50 [ 32.877824] ? do_syscall_64+0x92/0x800 [ 32.881781] __x64_sys_exit_group+0x3e/0x50 [ 32.886104] do_syscall_64+0x1b1/0x800 [ 32.889989] ? syscall_return_slowpath+0x5c0/0x5c0 [ 32.894901] ? syscall_return_slowpath+0x30f/0x5c0 [ 32.899810] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 32.905155] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.909978] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 32.915143] RIP: 0033:0x4424f9 [ 32.918312] RSP: 002b:00007ffcbea55c78 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7 [ 32.926006] RAX: ffffffffffffffda RBX: 00000000000002c0 RCX: 00000000004424f9 [ 32.933268] RDX: 00000000004424f9 RSI: 0000000000000001 RDI: 0000000000000000 [ 32.940518] RBP: 00007ffcbea55db0 R08: 0000000300000000 R09: 00007ffcbea55cc0 [ 32.947765] R10: 0000000000000004 R11: 0000000000000202 R12: 0000000000000000 [ 32.955018] R13: 0000000000000000 R14: 0000000000001380 R15: 00007ffcbea55dd8 [ 32.962278] [ 32.962281] ====================================================== [ 32.962284] WARNING: possible circular locking dependency detected [ 32.962287] 4.17.0-rc6+ #64 Not tainted [ 32.962290] ------------------------------------------------------ [ 32.962293] syz-executor351/5254 is trying to acquire lock: [ 32.962294] (ptrval) ((console_sem).lock){-...}, at: down_trylock+0x13/0x70 [ 32.962303] [ 32.962305] but task is already holding lock: [ 32.962306] (ptrval) (&obj_hash[i].lock){-.-.}, at: debug_check_no_obj_freed+0x159/0x584 [ 32.962315] [ 32.962317] which lock already depends on the new lock. [ 32.962319] [ 32.962320] [ 32.962323] the existing dependency chain (in reverse order) is: [ 32.962324] [ 32.962325] -> #3 (&obj_hash[i].lock){-.-.}: [ 32.962333] _raw_spin_lock_irqsave+0x96/0xc0 [ 32.962335] __debug_object_init+0x11f/0x12c0 [ 32.962337] debug_object_init+0x16/0x20 [ 32.962340] hrtimer_init+0x8f/0x460 [ 32.962342] init_dl_task_timer+0x1b/0x50 [ 32.962344] __sched_fork+0x2ae/0xc20 [ 32.962346] init_idle+0x75/0x7a0 [ 32.962348] sched_init+0xbeb/0xd10 [ 32.962350] start_kernel+0x475/0x92d [ 32.962353] x86_64_start_reservations+0x29/0x2b [ 32.962355] x86_64_start_kernel+0x76/0x79 [ 32.962358] secondary_startup_64+0xa5/0xb0 [ 32.962359] [ 32.962360] -> #2 (&rq->lock){-.-.}: [ 32.962367] _raw_spin_lock+0x2a/0x40 [ 32.962369] task_fork_fair+0x8a/0x660 [ 32.962371] sched_fork+0x43e/0xb30 [ 32.962374] copy_process.part.38+0x1c18/0x6e90 [ 32.962376] _do_fork+0x291/0x12a0 [ 32.962378] kernel_thread+0x34/0x40 [ 32.962380] rest_init+0x22/0xe4 [ 32.962382] start_kernel+0x906/0x92d [ 32.962385] x86_64_start_reservations+0x29/0x2b [ 32.962387] x86_64_start_kernel+0x76/0x79 [ 32.962389] secondary_startup_64+0xa5/0xb0 [ 32.962390] [ 32.962392] -> #1 (&p->pi_lock){-.-.}: [ 32.962399] _raw_spin_lock_irqsave+0x96/0xc0 [ 32.962401] try_to_wake_up+0xca/0x1190 [ 32.962404] wake_up_process+0x10/0x20 [ 32.962406] __up.isra.1+0x1b8/0x290 [ 32.962408] up+0x12f/0x1b0 [ 32.962410] __up_console_sem+0xbe/0x1b0 [ 32.962412] console_unlock+0x7d6/0x1100 [ 32.962414] do_con_write+0x12b2/0x2280 [ 32.962416] con_write+0x25/0xc0 [ 32.962418] n_tty_write+0x6b9/0x1180 [ 32.962420] tty_write+0x3f1/0x880 [ 32.962423] __vfs_write+0x10b/0x960 [ 32.962425] vfs_write+0x1f8/0x560 [ 32.962427] ksys_write+0xf9/0x250 [ 32.962429] __x64_sys_write+0x73/0xb0 [ 32.962431] do_syscall_64+0x1b1/0x800 [ 32.962434] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 32.962435] [ 32.962436] -> #0 ((console_sem).lock){-...}: [ 32.962443] lock_acquire+0x1dc/0x520 [ 32.962446] _raw_spin_lock_irqsave+0x96/0xc0 [ 32.962448] down_trylock+0x13/0x70 [ 32.962451] __down_trylock_console_sem+0xae/0x200 [ 32.962453] console_trylock+0x15/0xa0 [ 32.962455] vprintk_emit+0x694/0xdd0 [ 32.962457] vprintk_default+0x28/0x30 [ 32.962459] vprintk_func+0x7a/0xe7 [ 32.962461] printk+0x9e/0xba [ 32.962463] __warn_printk+0x83/0xd0 [ 32.962466] debug_print_object+0x16a/0x210 [ 32.962468] debug_check_no_obj_freed+0x3a6/0x584 [ 32.962470] kmem_cache_free+0x216/0x2d0 [ 32.962473] __sk_destruct+0x6fe/0xa40 [ 32.962475] sk_destruct+0x78/0x90 [ 32.962477] __sk_free+0xcf/0x300 [ 32.962479] sk_free+0x42/0x50 [ 32.962481] smc_release+0x459/0x610 [ 32.962483] sock_release+0x96/0x1b0 [ 32.962485] sock_close+0x16/0x20 [ 32.962487] __fput+0x34d/0x890 [ 32.962489] ____fput+0x15/0x20 [ 32.962491] task_work_run+0x1e4/0x290 [ 32.962493] do_exit+0x1aee/0x2730 [ 32.962495] do_group_exit+0x16f/0x430 [ 32.962498] __x64_sys_exit_group+0x3e/0x50 [ 32.962500] do_syscall_64+0x1b1/0x800 [ 32.962503] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 32.962504] [ 32.962506] other info that might help us debug this: [ 32.962507] [ 32.962509] Chain exists of: [ 32.962510] (console_sem).lock --> &rq->lock --> &obj_hash[i].lock [ 32.962519] [ 32.962522] Possible unsafe locking scenario: [ 32.962523] [ 32.962525] CPU0 CPU1 [ 32.962528] ---- ---- [ 32.962529] lock(&obj_hash[i].lock); [ 32.962534] lock(&rq->lock); [ 32.962540] lock(&obj_hash[i].lock); [ 32.962547] lock((console_sem).lock); [ 32.962554] [ 32.962557] *** DEADLOCK *** [ 32.962559] [ 32.962563] 1 lock held by syz-executor351/5254: [ 32.962565] #0: (ptrval) (&obj_hash[i].lock){-.-.}, at: debug_check_no_obj_freed+0x159/0x584 [ 32.962580] [ 32.962583] stack backtrace: [ 32.962589] CPU: 0 PID: 5254 Comm: syz-executor351 Not tainted 4.17.0-rc6+ #64 [ 32.962594] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.962595] Call Trace: [ 32.962597] dump_stack+0x1b9/0x294 [ 32.962600] ? dump_stack_print_info.cold.2+0x52/0x52 [ 32.962602] ? print_lock+0xd1/0xd6 [ 32.962604] ? vprintk_func+0xd0/0xe7 [ 32.962607] print_circular_bug.isra.36.cold.54+0x1bd/0x27d [ 32.962609] ? save_trace+0xe0/0x290 [ 32.962611] __lock_acquire+0x343e/0x5140 [ 32.962614] ? debug_check_no_locks_freed+0x310/0x310 [ 32.962617] ? debug_check_no_locks_freed+0x310/0x310 [ 32.962619] ? graph_lock+0x170/0x170 [ 32.962621] ? graph_lock+0x170/0x170 [ 32.962623] ? print_usage_bug+0xc0/0xc0 [ 32.962625] ? print_usage_bug+0xc0/0xc0 [ 32.962628] ? debug_check_no_locks_freed+0x310/0x310 [ 32.962630] ? print_usage_bug+0xc0/0xc0 [ 32.962632] ? print_usage_bug+0xc0/0xc0 [ 32.962635] ? __lock_acquire+0x7f5/0x5140 [ 32.962637] ? graph_lock+0x170/0x170 [ 32.962639] lock_acquire+0x1dc/0x520 [ 32.962641] ? down_trylock+0x13/0x70 [ 32.962643] ? lock_release+0xa10/0xa10 [ 32.962645] ? lock_downgrade+0x8e0/0x8e0 [ 32.962648] ? kvm_sched_clock_read+0x9/0x20 [ 32.962650] ? sched_clock+0x31/0x40 [ 32.962652] ? vprintk_emit+0x694/0xdd0 [ 32.962655] _raw_spin_lock_irqsave+0x96/0xc0 [ 32.962657] ? down_trylock+0x13/0x70 [ 32.962659] down_trylock+0x13/0x70 [ 32.962661] __down_trylock_console_sem+0xae/0x200 [ 32.962664] console_trylock+0x15/0xa0 [ 32.962666] vprintk_emit+0x694/0xdd0 [ 32.962668] ? debug_check_no_locks_freed+0x310/0x310 [ 32.962671] ? console_unlock+0x1100/0x1100 [ 32.962673] ? print_usage_bug+0xc0/0xc0 [ 32.962675] ? save_stack+0xa9/0xd0 [ 32.962677] ? find_held_lock+0x36/0x1c0 [ 32.962680] ? fork_usermode_blob+0x1a0/0x1a0 [ 32.962682] vprintk_default+0x28/0x30 [ 32.962684] vprintk_func+0x7a/0xe7 [ 32.962685] printk+0x9e/0xba [ 32.962688] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 32.962690] ? kasan_check_write+0x14/0x20 [ 32.962693] ? __warn_printk+0x77/0xd0 [ 32.962695] ? smc_tx_sendmsg+0x1030/0x1030 [ 32.962697] __warn_printk+0x83/0xd0 [ 32.962699] ? test_taint+0x20/0x20 [ 32.962701] ? __free_object+0x16e/0x330 [ 32.962704] ? __list_del_entry_valid.cold.1+0x58/0x58 [ 32.962706] ? smc_tx_sendmsg+0x1030/0x1030 [ 32.962708] debug_print_object+0x16a/0x210 [ 32.962711] debug_check_no_obj_freed+0x3a6/0x584 [ 32.962713] ? free_obj_work+0xb90/0xb90 [ 32.962716] ? debug_check_no_locks_freed+0x204/0x310 [ 32.962718] kmem_cache_free+0x216/0x2d0 [ 32.962720] __sk_destruct+0x6fe/0xa40 [ 32.962722] ? find_held_lock+0x36/0x1c0 [ 32.962725] ? sock_warn_obsolete_bsdism+0xb0/0xb0 [ 32.962727] ? lock_downgrade+0x8e0/0x8e0 [ 32.962730] ? refcount_sub_and_test+0x212/0x330 [ 32.962732] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 32.962734] ? lock_downgrade+0x8e0/0x8e0 [ 32.962737] ? __local_bh_enable_ip+0x161/0x230 [ 32.962739] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 32.962742] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 32.962744] ? refcount_sub_and_test+0x212/0x330 [ 32.962747] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 32.962749] ? refcount_inc_not_zero+0x2d0/0x2d0 [ 32.962752] ? smc_rx_data_available+0x100/0x100 [ 32.962754] sk_destruct+0x78/0x90 [ 32.962756] __sk_free+0xcf/0x300 [ 32.962758] sk_free+0x42/0x50 [ 32.962760] smc_release+0x459/0x610 [ 32.962762] sock_release+0x96/0x1b0 [ 32.962764] ? sock_alloc_file+0x4e0/0x4e0 [ 32.962766] sock_close+0x16/0x20 [ 32.962768] __fput+0x34d/0x890 [ 32.962770] ? fput+0x1a0/0x1a0 [ 32.962772] ? _raw_spin_unlock_irq+0x27/0x70 [ 32.962774] ____fput+0x15/0x20 [ 32.962776] task_work_run+0x1e4/0x290 [ 32.962779] ? task_work_cancel+0x240/0x240 [ 32.962781] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 32.962784] ? switch_task_namespaces+0xa2/0xd0 [ 32.962786] do_exit+0x1aee/0x2730 [ 32.962788] ? mm_update_next_owner+0x980/0x980 [ 32.962790] ? kasan_check_read+0x11/0x20 [ 32.962793] ? do_raw_spin_unlock+0x9e/0x2e0 [ 32.962795] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 32.962797] ? _raw_spin_unlock+0x22/0x30 [ 32.962800] ? __queue_work+0x685/0x13f0 [ 32.962802] ? release_sock+0x1e2/0x2b0 [ 32.962804] ? trace_hardirqs_on+0xd/0x10 [ 32.962806] ? flush_rcu_work+0x90/0x90 [ 32.962808] ? graph_lock+0x170/0x170 [ 32.962810] ? graph_lock+0x170/0x170 [ 32.962813] ? detach_if_pending+0x6e0/0x6e0 [ 32.962815] ? find_held_lock+0x36/0x1c0 [ 32.962817] ? lock_downgrade+0x8e0/0x8e0 [ 32.962819] ? kasan_check_read+0x11/0x20 [ 32.962822] ? do_raw_spin_unlock+0x9e/0x2e0 [ 32.962824] ? __local_bh_enable_ip+0x161/0x230 [ 32.962827] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 32.962829] ? release_sock+0x1e2/0x2b0 [ 32.962831] ? trace_hardirqs_on+0xd/0x10 [ 32.962834] ? __local_bh_enable_ip+0x161/0x230 [ 32.962836] ? _raw_spin_unlock_bh+0x30/0x40 [ 32.962838] ? release_sock+0x1e2/0x2b0 [ 32.962841] ? __release_sock+0x3a0/0x3a0 [ 32.962843] ? __local_bh_enable_ip+0x161/0x230 [ 32.962846] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 32.962848] ? smc_setsockopt+0x1ed/0x6d0 [ 32.962851] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 32.962853] ? __sys_setsockopt+0x24f/0x390 [ 32.962855] do_group_exit+0x16f/0x430 [ 32.962857] ? mm_fault_error+0x380/0x380 [ 32.962860] ? __ia32_sys_exit+0x50/0x50 [ 32.962862] ? do_syscall_64+0x92/0x800 [ 32.962865] __x64_sys_exit_group+0x3e/0x50 [ 32.962867] do_syscall_64+0x1b1/0x800 [ 32.962869] ? syscall_return_slowpath+0x5c0/0x5c0 [ 32.962872] ? syscall_return_slowpath+0x30f/0x5c0 [ 32.962874] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 32.962877] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.962880] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 32.962881] RIP: 0033:0x4424f9 [ 32.962884] RSP: 002b:00007ffcbea55c78 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7 [ 32.962890] RAX: ffffffffffffffda RBX: 00000000000002c0 RCX: 00000000004424f9 [ 32.962893] RDX: 00000000004424f9 RSI: 0000000000000001 RDI: 0000000000000000 [ 32.962896] RBP: 00007ffcbea55db0 R08: 000000030 [ 32.962900] Lost 2 message(s)! [ 32.963562] Dumping ftrace buffer: [ 34.017013] (ftrace buffer empty) [ 34.020700] Kernel Offset: disabled [ 34.024309] Rebooting in 86400 seconds..