Warning: Permanently added '10.128.1.225' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 1289.426355][ T26] INFO: task syz-executor209:6560 blocked for more than 143 seconds. [ 1289.434666][ T26] Not tainted 5.15.0-rc6-syzkaller #0 [ 1289.444851][ T26] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1289.454608][ T26] task:syz-executor209 state:D stack:27808 pid: 6560 ppid: 6558 flags:0x00004006 [ 1289.464841][ T26] Call Trace: [ 1289.469618][ T26] __schedule+0xb44/0x5960 [ 1289.474199][ T26] ? find_held_lock+0x2d/0x110 [ 1289.480358][ T26] ? __mutex_lock+0x952/0x12f0 [ 1289.485150][ T26] ? io_schedule_timeout+0x140/0x140 [ 1289.492197][ T26] ? rwlock_bug.part.0+0x90/0x90 [ 1289.498246][ T26] schedule+0xd3/0x270 [ 1289.502352][ T26] schedule_preempt_disabled+0xf/0x20 [ 1289.509496][ T26] __mutex_lock+0xa34/0x12f0 [ 1289.514123][ T26] ? io_uring_del_tctx_node+0x105/0x350 [ 1289.521072][ T26] ? mutex_lock_io_nested+0x1150/0x1150 [ 1289.527597][ T26] ? xa_erase+0xec/0x170 [ 1289.531920][ T26] ? __xa_alloc_cyclic+0x340/0x340 [ 1289.538428][ T26] io_uring_del_tctx_node+0x105/0x350 [ 1289.543832][ T26] io_uring_cancel_generic+0x5cb/0x760 [ 1289.550949][ T26] ? __io_uring_free+0x170/0x170 [ 1289.555915][ T26] ? finish_wait+0x270/0x270 [ 1289.561921][ T26] ? change_protection+0xf09/0x20f0 [ 1289.568150][ T26] ? lock_downgrade+0x6e0/0x6e0 [ 1289.573031][ T26] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 1289.581103][ T26] ? __validate_process_creds+0x20c/0x370 [ 1289.587831][ T26] do_exit+0x265/0x2a30 [ 1289.592062][ T26] ? find_held_lock+0x2d/0x110 [ 1289.598198][ T26] ? mm_update_next_owner+0x7a0/0x7a0 [ 1289.603597][ T26] ? lock_downgrade+0x6e0/0x6e0 [ 1289.609923][ T26] do_group_exit+0x125/0x310 [ 1289.614549][ T26] get_signal+0x47f/0x2160 [ 1289.620474][ T26] ? find_held_lock+0x2d/0x110 [ 1289.625275][ T26] arch_do_signal_or_restart+0x2a9/0x1c40 [ 1289.632499][ T26] ? up_write+0x470/0x470 [ 1289.637694][ T26] ? get_sigframe_size+0x10/0x10 [ 1289.642687][ T26] exit_to_user_mode_prepare+0x17d/0x290 [ 1289.649940][ T26] syscall_exit_to_user_mode+0x19/0x60 [ 1289.655472][ T26] do_syscall_64+0x42/0xb0 [ 1289.661515][ T26] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 1289.668497][ T26] RIP: 0033:0x7f6718cf4279 [ 1289.672942][ T26] RSP: 002b:00007f6718ca51f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa [ 1289.682854][ T26] RAX: 00000000000002ff RBX: 00007f6718d7c408 RCX: 00007f6718cf4279 [ 1289.692218][ T26] RDX: 0000000000000000 RSI: 00000000000002ff RDI: 0000000000000003 [ 1289.701283][ T26] RBP: 00007f6718d7c400 R08: 0000000000000000 R09: 0000000000000000 [ 1289.710363][ T26] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6718d7c40c [ 1289.719310][ T26] R13: 00007fff127612df R14: 00007f6718ca5300 R15: 0000000000022000 [ 1289.728326][ T26] [ 1289.728326][ T26] Showing all locks held in the system: [ 1289.737033][ T26] 1 lock held by khungtaskd/26: [ 1289.741895][ T26] #0: ffffffff8b981b60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 1289.753512][ T26] 1 lock held by in:imklog/6259: [ 1289.759553][ T26] #0: ffff88801d9885f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 [ 1289.769830][ T26] 1 lock held by syz-executor209/6560: [ 1289.775303][ T26] #0: ffff8880786e20a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_uring_del_tctx_node+0x105/0x350 [ 1289.787213][ T26] 1 lock held by syz-executor209/6563: [ 1289.792693][ T26] [ 1289.795017][ T26] ============================================= [ 1289.795017][ T26] [ 1289.805791][ T26] NMI backtrace for cpu 0 [ 1289.810132][ T26] CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.15.0-rc6-syzkaller #0 [ 1289.818290][ T26] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1289.828351][ T26] Call Trace: [ 1289.831633][ T26] dump_stack_lvl+0xcd/0x134 [ 1289.836291][ T26] nmi_cpu_backtrace.cold+0x47/0x144 [ 1289.841595][ T26] ? lapic_can_unplug_cpu+0x80/0x80 [ 1289.846899][ T26] nmi_trigger_cpumask_backtrace+0x1ae/0x220 [ 1289.852938][ T26] watchdog+0xc1d/0xf50 [ 1289.857109][ T26] ? reset_hung_task_detector+0x30/0x30 [ 1289.862667][ T26] kthread+0x3e5/0x4d0 [ 1289.866792][ T26] ? set_kthread_struct+0x130/0x130 [ 1289.872005][ T26] ret_from_fork+0x1f/0x30 [ 1289.877134][ T26] Sending NMI from CPU 0 to CPUs 1: [ 1289.882358][ C1] NMI backtrace for cpu 1 [ 1289.882369][ C1] CPU: 1 PID: 6563 Comm: syz-executor209 Not tainted 5.15.0-rc6-syzkaller #0 [ 1289.882392][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1289.882404][ C1] RIP: 0010:__lock_acquire+0xd49/0x54a0 [ 1289.882433][ C1] Code: 03 0f b6 04 02 84 c0 74 0d 3c 03 7f 09 48 8b 3c 24 e8 cb 56 62 00 41 8b 85 18 0a 00 00 83 c0 01 83 f8 2f 41 89 85 18 0a 00 00 <0f> 87 18 0b 00 00 3b 05 fb 20 e9 0d 41 be 01 00 00 00 0f 86 c8 00 [ 1289.882453][ C1] RSP: 0018:ffffc9000249f558 EFLAGS: 00000093 [ 1289.882470][ C1] RAX: 0000000000000002 RBX: 000000002e9fb5d5 RCX: 2bef69cb239427f6 [ 1289.882485][ C1] RDX: 1ffff110030644d3 RSI: 0000000000000001 RDI: ffffffff8fd01c40 [ 1289.882500][ C1] RBP: 0000000000000003 R08: 0000000000000000 R09: ffffffff8fcff9e7 [ 1289.882513][ C1] R10: fffffbfff1f9ff3c R11: 0000000000086089 R12: ffff8880183226c8 [ 1289.882528][ C1] R13: ffff888018321c80 R14: 0000000000000000 R15: 2bef69cb239427f6 [ 1289.882543][ C1] FS: 00007f6718c42700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 1289.882562][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1289.882577][ C1] CR2: 00007f6718d49498 CR3: 0000000019aa0000 CR4: 00000000003506e0 [ 1289.882591][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1289.882604][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1289.882617][ C1] Call Trace: [ 1289.882628][ C1] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 1289.882654][ C1] ? lockdep_hardirqs_on+0x79/0x100 [ 1289.882681][ C1] lock_acquire+0x1ab/0x510 [ 1289.882702][ C1] ? __bpf_address_lookup+0x2a0/0x2a0 [ 1289.882789][ C1] ? lock_release+0x720/0x720 [ 1289.882810][ C1] ? arch_stack_walk+0x5c/0xe0 [ 1289.882858][ C1] ? unwind_next_frame+0xec8/0x1ce0 [ 1289.882899][ C1] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 1289.882928][ C1] is_bpf_text_address+0x36/0x170 [ 1289.882950][ C1] ? __bpf_address_lookup+0x2a0/0x2a0 [ 1289.882973][ C1] kernel_text_address+0xbd/0xf0 [ 1289.882996][ C1] __kernel_text_address+0x9/0x30 [ 1289.883019][ C1] unwind_get_return_address+0x51/0x90 [ 1289.883040][ C1] ? create_prof_cpu_mask+0x20/0x20 [ 1289.883082][ C1] arch_stack_walk+0x93/0xe0 [ 1289.883108][ C1] stack_trace_save+0x8c/0xc0 [ 1289.883130][ C1] ? stack_trace_consume_entry+0x160/0x160 [ 1289.883158][ C1] kasan_save_stack+0x1b/0x40 [ 1289.883204][ C1] ? kasan_save_stack+0x1b/0x40 [ 1289.883223][ C1] ? __kasan_kmalloc+0xa4/0xd0 [ 1289.883242][ C1] ? io_issue_sqe+0x3289/0x7180 [ 1289.883270][ C1] ? __io_queue_sqe+0x90/0xb50 [ 1289.883291][ C1] ? io_req_task_submit+0xbf/0x1b0 [ 1289.883314][ C1] ? tctx_task_work+0x189/0x6c0 [ 1289.883335][ C1] ? task_work_run+0xdd/0x1a0 [ 1289.883355][ C1] ? exit_to_user_mode_prepare+0x256/0x290 [ 1289.883378][ C1] ? syscall_exit_to_user_mode+0x19/0x60 [ 1289.883401][ C1] ? do_syscall_64+0x42/0xb0 [ 1289.883420][ C1] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 1289.883451][ C1] ? find_held_lock+0x2d/0x110 [ 1289.883474][ C1] ? kmem_cache_alloc_trace+0x42/0x3c0 [ 1289.883523][ C1] ? rcu_read_lock_sched_held+0x3a/0x70 [ 1289.883565][ C1] __kasan_kmalloc+0xa4/0xd0 [ 1289.883585][ C1] io_issue_sqe+0x3289/0x7180 [ 1289.883613][ C1] ? io_connect+0x6a0/0x6a0 [ 1289.883634][ C1] ? mark_lock+0xef/0x17b0 [ 1289.883656][ C1] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 1289.883681][ C1] ? lock_chain_count+0x20/0x20 [ 1289.883706][ C1] __io_queue_sqe+0x90/0xb50 [ 1289.883730][ C1] ? io_timeout_prep+0x8b0/0x8b0 [ 1289.883754][ C1] ? mark_held_locks+0x9f/0xe0 [ 1289.883776][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 1289.883801][ C1] io_req_task_submit+0xbf/0x1b0 [ 1289.883824][ C1] tctx_task_work+0x189/0x6c0 [ 1289.883849][ C1] ? io_fallback_req_func+0x3e0/0x3e0 [ 1289.883871][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 1289.883895][ C1] ? _raw_spin_unlock_irq+0x1f/0x40 [ 1289.883920][ C1] task_work_run+0xdd/0x1a0 [ 1289.883944][ C1] exit_to_user_mode_prepare+0x256/0x290 [ 1289.883967][ C1] syscall_exit_to_user_mode+0x19/0x60 [ 1289.883991][ C1] do_syscall_64+0x42/0xb0 [ 1289.884010][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 1289.884036][ C1] RIP: 0033:0x7f6718cf4279 [ 1289.884054][ C1] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 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 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 [ 1289.884073][ C1] RSP: 002b:00007f6718c421f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa [ 1289.884093][ C1] RAX: 00000000000002ff RBX: 00007f6718d7c438 RCX: 00007f6718cf4279 [ 1289.884107][ C1] RDX: 0000000000000000 RSI: 00000000000002ff RDI: 0000000000000003 [ 1289.884120][ C1] RBP: 00007f6718d7c430 R08: 0000000000000000 R09: 0000000000000000 [ 1289.884134][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6718d7c43c [ 1289.884147][ C1] R13: 00007fff127612df R14: 00007f6718c42300 R15: 0000000000022000 [ 1289.884169][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.811 msecs [ 1289.896662][ T26] Kernel panic - not syncing: hung_task: blocked tasks [ 1290.373559][ T26] CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.15.0-rc6-syzkaller #0 [ 1290.381779][ T26] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1290.391861][ T26] Call Trace: [ 1290.395152][ T26] dump_stack_lvl+0xcd/0x134 [ 1290.399763][ T26] panic+0x2b0/0x6dd [ 1290.403668][ T26] ? __warn_printk+0xf3/0xf3 [ 1290.408279][ T26] ? lapic_can_unplug_cpu+0x80/0x80 [ 1290.413664][ T26] ? preempt_schedule_thunk+0x16/0x18 [ 1290.419054][ T26] ? nmi_trigger_cpumask_backtrace+0x191/0x220 [ 1290.425231][ T26] ? watchdog.cold+0x130/0x158 [ 1290.430040][ T26] watchdog.cold+0x141/0x158 [ 1290.434648][ T26] ? reset_hung_task_detector+0x30/0x30 [ 1290.440214][ T26] kthread+0x3e5/0x4d0 [ 1290.444300][ T26] ? set_kthread_struct+0x130/0x130 [ 1290.449515][ T26] ret_from_fork+0x1f/0x30 [ 1290.454360][ T26] Kernel Offset: disabled [ 1290.458725][ T26] Rebooting in 86400 seconds..