Warning: Permanently added '10.128.10.54' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 77.352772][ T9138] IPVS: ftp: loaded support on port[0] = 21 [ 77.543075][ T9141] ------------[ cut here ]------------ [ 77.549501][ T9141] WARNING: CPU: 0 PID: 9141 at kernel/sched/deadline.c:627 enqueue_task_dl.cold+0x103/0x4c2 [ 77.559555][ T9141] Kernel panic - not syncing: panic_on_warn set ... [ 77.566124][ T9141] CPU: 0 PID: 9141 Comm: syz-executor780 Not tainted 5.2.0+ #69 [ 77.573743][ T9141] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.583797][ T9141] Call Trace: [ 77.587075][ T9141] dump_stack+0x172/0x1f0 [ 77.591400][ T9141] ? enqueue_task_dl.cold+0x5d/0x4c2 [ 77.596688][ T9141] panic+0x2dc/0x755 [ 77.600662][ T9141] ? add_taint.cold+0x16/0x16 [ 77.605336][ T9141] ? __kasan_check_write+0x14/0x20 [ 77.610446][ T9141] ? __warn.cold+0x5/0x4c [ 77.614769][ T9141] ? __warn+0xe7/0x1e0 [ 77.618836][ T9141] ? enqueue_task_dl.cold+0x103/0x4c2 [ 77.624232][ T9141] __warn.cold+0x20/0x4c [ 77.628484][ T9141] ? enqueue_task_dl.cold+0x103/0x4c2 [ 77.633852][ T9141] report_bug+0x263/0x2b0 [ 77.638196][ T9141] do_error_trap+0x11b/0x200 [ 77.642801][ T9141] do_invalid_op+0x37/0x50 [ 77.647223][ T9141] ? enqueue_task_dl.cold+0x103/0x4c2 [ 77.652623][ T9141] invalid_op+0x14/0x20 [ 77.656785][ T9141] RIP: 0010:enqueue_task_dl.cold+0x103/0x4c2 [ 77.662762][ T9141] Code: d0 48 8b 55 c8 4c 8b 4d b8 e9 64 7a ff ff 48 c7 c7 e0 a4 8b 87 4c 89 4d b0 48 89 55 b8 4c 89 45 c8 4c 89 55 d0 e8 1e 75 06 00 <0f> 0b 4c 8b 55 d0 b8 ff ff 37 00 48 c1 e0 2a 4c 8b 45 c8 48 8b 55 [ 77.682401][ T9141] RSP: 0018:ffff88809ca37c88 EFLAGS: 00010082 [ 77.688465][ T9141] RAX: 0000000000000024 RBX: ffffffff89a53874 RCX: 0000000000000000 [ 77.696434][ T9141] RDX: 0000000000000000 RSI: ffffffff815c3616 RDI: ffffed1013946f83 [ 77.704401][ T9141] RBP: ffff88809ca37d00 R08: 0000000000000024 R09: ffffed1015d060b1 [ 77.712387][ T9141] R10: ffffed1015d060b0 R11: ffff8880ae830587 R12: ffff88809c9f6300 [ 77.720355][ T9141] R13: ffff8880ae835580 R14: ffff8880ae835580 R15: 0000000000000000 [ 77.728353][ T9141] ? vprintk_func+0x86/0x189 [ 77.732948][ T9141] ? enqueue_task_dl.cold+0x103/0x4c2 [ 77.738325][ T9141] enqueue_task+0xb3/0x370 [ 77.742773][ T9141] __sched_setscheduler+0xc58/0x2030 [ 77.748100][ T9141] ? cpu_cgroup_fork+0xd0/0xd0 [ 77.752889][ T9141] ? __kasan_check_read+0x11/0x20 [ 77.757914][ T9141] __x64_sys_sched_setattr+0x1a1/0x280 [ 77.763370][ T9141] ? __ia32_sys_sched_setparam+0x80/0x80 [ 77.769016][ T9141] ? do_syscall_64+0x26/0x6a0 [ 77.773691][ T9141] ? lockdep_hardirqs_on+0x418/0x5d0 [ 77.778991][ T9141] ? trace_hardirqs_on+0x67/0x240 [ 77.784015][ T9141] do_syscall_64+0xfd/0x6a0 [ 77.788517][ T9141] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.794417][ T9141] RIP: 0033:0x446769 [ 77.798836][ T9141] Code: e8 bc b4 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0f 83 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 77.826551][ T9141] RSP: 002b:00007f5561023db8 EFLAGS: 00000246 ORIG_RAX: 000000000000013a [ 77.835056][ T9141] RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 0000000000446769 [ 77.843037][ T9141] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000000 [ 77.851017][ T9141] RBP: 00000000006dbc30 R08: 0000000000000000 R09: 0000000000000000 [ 77.858997][ T9141] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc3c [ 77.868164][ T9141] R13: 00007fff4d53be4f R14: 00007f55610249c0 R15: 0000000000000002 [ 77.876159][ T9141] [ 77.876166][ T9141] ====================================================== [ 77.876172][ T9141] WARNING: possible circular locking dependency detected [ 77.876176][ T9141] 5.2.0+ #69 Not tainted [ 77.876182][ T9141] ------------------------------------------------------ [ 77.876187][ T9141] syz-executor780/9141 is trying to acquire lock: [ 77.876191][ T9141] 000000008a819a43 ((console_sem).lock){-.-.}, at: down_trylock+0x13/0x70 [ 77.876207][ T9141] [ 77.876212][ T9141] but task is already holding lock: [ 77.876215][ T9141] 000000000a5f4fe1 (&rq->lock){-.-.}, at: task_rq_lock+0xc5/0x2c0 [ 77.876236][ T9141] [ 77.876240][ T9141] which lock already depends on the new lock. [ 77.876243][ T9141] [ 77.876246][ T9141] [ 77.876252][ T9141] the existing dependency chain (in reverse order) is: [ 77.876254][ T9141] [ 77.876257][ T9141] -> #2 (&rq->lock){-.-.}: [ 77.876272][ T9141] _raw_spin_lock+0x2f/0x40 [ 77.876276][ T9141] task_fork_fair+0x6a/0x520 [ 77.876281][ T9141] sched_fork+0x3af/0x900 [ 77.876285][ T9141] copy_process+0x1b04/0x6b00 [ 77.876289][ T9141] _do_fork+0x146/0xfa0 [ 77.876293][ T9141] kernel_thread+0xbb/0xf0 [ 77.876297][ T9141] rest_init+0x28/0x37b [ 77.876302][ T9141] arch_call_rest_init+0xe/0x1b [ 77.876306][ T9141] start_kernel+0x912/0x951 [ 77.876311][ T9141] x86_64_start_reservations+0x29/0x2b [ 77.876316][ T9141] x86_64_start_kernel+0x77/0x7b [ 77.876320][ T9141] secondary_startup_64+0xa4/0xb0 [ 77.876323][ T9141] [ 77.876325][ T9141] -> #1 (&p->pi_lock){-.-.}: [ 77.876341][ T9141] _raw_spin_lock_irqsave+0x95/0xcd [ 77.876345][ T9141] try_to_wake_up+0xb0/0x1aa0 [ 77.876350][ T9141] wake_up_process+0x10/0x20 [ 77.876354][ T9141] __up.isra.0+0x136/0x1a0 [ 77.876358][ T9141] up+0x9c/0xe0 [ 77.876362][ T9141] __up_console_sem+0xb7/0x1c0 [ 77.876366][ T9141] console_unlock+0x695/0xf10 [ 77.876371][ T9141] vprintk_emit+0x2a0/0x700 [ 77.876375][ T9141] vprintk_default+0x28/0x30 [ 77.876379][ T9141] vprintk_func+0x7e/0x189 [ 77.876383][ T9141] printk+0xba/0xed [ 77.876387][ T9141] do_exit.cold+0x18b/0x314 [ 77.876392][ T9141] do_group_exit+0x135/0x360 [ 77.876396][ T9141] __x64_sys_exit_group+0x44/0x50 [ 77.876401][ T9141] do_syscall_64+0xfd/0x6a0 [ 77.876406][ T9141] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.876408][ T9141] [ 77.876411][ T9141] -> #0 ((console_sem).lock){-.-.}: [ 77.876427][ T9141] __lock_acquire+0x25a9/0x4c30 [ 77.876431][ T9141] lock_acquire+0x190/0x410 [ 77.876436][ T9141] _raw_spin_lock_irqsave+0x95/0xcd [ 77.876440][ T9141] down_trylock+0x13/0x70 [ 77.876445][ T9141] __down_trylock_console_sem+0xa8/0x210 [ 77.876449][ T9141] console_trylock+0x15/0xa0 [ 77.876453][ T9141] vprintk_emit+0x283/0x700 [ 77.876458][ T9141] vprintk_default+0x28/0x30 [ 77.876462][ T9141] vprintk_func+0x7e/0x189 [ 77.876466][ T9141] printk+0xba/0xed [ 77.876470][ T9141] enqueue_task_dl.cold+0x103/0x4c2 [ 77.876475][ T9141] enqueue_task+0xb3/0x370 [ 77.876479][ T9141] __sched_setscheduler+0xc58/0x2030 [ 77.876484][ T9141] __x64_sys_sched_setattr+0x1a1/0x280 [ 77.876488][ T9141] do_syscall_64+0xfd/0x6a0 [ 77.876494][ T9141] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.876496][ T9141] [ 77.876501][ T9141] other info that might help us debug this: [ 77.876504][ T9141] [ 77.876507][ T9141] Chain exists of: [ 77.876510][ T9141] (console_sem).lock --> &p->pi_lock --> &rq->lock [ 77.876529][ T9141] [ 77.876533][ T9141] Possible unsafe locking scenario: [ 77.876536][ T9141] [ 77.876540][ T9141] CPU0 CPU1 [ 77.876545][ T9141] ---- ---- [ 77.876548][ T9141] lock(&rq->lock); [ 77.876558][ T9141] lock(&p->pi_lock); [ 77.876568][ T9141] lock(&rq->lock); [ 77.876576][ T9141] lock((console_sem).lock); [ 77.876585][ T9141] [ 77.876588][ T9141] *** DEADLOCK *** [ 77.876591][ T9141] [ 77.876596][ T9141] 2 locks held by syz-executor780/9141: [ 77.876598][ T9141] #0: 000000002ab4ecc6 (&p->pi_lock){-.-.}, at: task_rq_lock+0x6a/0x2c0 [ 77.876616][ T9141] #1: 000000000a5f4fe1 (&rq->lock){-.-.}, at: task_rq_lock+0xc5/0x2c0 [ 77.876634][ T9141] [ 77.876638][ T9141] stack backtrace: [ 77.876644][ T9141] CPU: 0 PID: 9141 Comm: syz-executor780 Not tainted 5.2.0+ #69 [ 77.876651][ T9141] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.876654][ T9141] Call Trace: [ 77.876658][ T9141] dump_stack+0x172/0x1f0 [ 77.876663][ T9141] print_circular_bug.cold+0x163/0x172 [ 77.876667][ T9141] check_noncircular+0x345/0x3e0 [ 77.876672][ T9141] ? print_circular_bug+0x200/0x200 [ 77.876676][ T9141] ? __lockdep_reset_lock+0x450/0x450 [ 77.876681][ T9141] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 77.876686][ T9141] ? find_first_zero_bit+0x9a/0xc0 [ 77.876690][ T9141] __lock_acquire+0x25a9/0x4c30 [ 77.876694][ T9141] ? format_decode+0x25f/0xbc0 [ 77.876698][ T9141] ? mark_held_locks+0xf0/0xf0 [ 77.876702][ T9141] ? kvm_clock_read+0x18/0x30 [ 77.876706][ T9141] ? vprintk_emit+0x14b/0x700 [ 77.876710][ T9141] lock_acquire+0x190/0x410 [ 77.876714][ T9141] ? down_trylock+0x13/0x70 [ 77.876718][ T9141] _raw_spin_lock_irqsave+0x95/0xcd [ 77.876722][ T9141] ? down_trylock+0x13/0x70 [ 77.876726][ T9141] ? vprintk_emit+0x283/0x700 [ 77.876729][ T9141] down_trylock+0x13/0x70 [ 77.876734][ T9141] ? vprintk_emit+0x283/0x700 [ 77.876738][ T9141] __down_trylock_console_sem+0xa8/0x210 [ 77.876742][ T9141] console_trylock+0x15/0xa0 [ 77.876746][ T9141] vprintk_emit+0x283/0x700 [ 77.876750][ T9141] vprintk_default+0x28/0x30 [ 77.876754][ T9141] vprintk_func+0x7e/0x189 [ 77.876758][ T9141] printk+0xba/0xed [ 77.876762][ T9141] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 77.876767][ T9141] enqueue_task_dl.cold+0x103/0x4c2 [ 77.876771][ T9141] enqueue_task+0xb3/0x370 [ 77.876775][ T9141] __sched_setscheduler+0xc58/0x2030 [ 77.876779][ T9141] ? cpu_cgroup_fork+0xd0/0xd0 [ 77.876784][ T9141] ? __kasan_check_read+0x11/0x20 [ 77.876788][ T9141] __x64_sys_sched_setattr+0x1a1/0x280 [ 77.876793][ T9141] ? __ia32_sys_sched_setparam+0x80/0x80 [ 77.876797][ T9141] ? do_syscall_64+0x26/0x6a0 [ 77.876802][ T9141] ? lockdep_hardirqs_on+0x418/0x5d0 [ 77.876806][ T9141] ? trace_hardirqs_on+0x67/0x240 [ 77.876810][ T9141] do_syscall_64+0xfd/0x6a0 [ 77.876815][ T9141] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.876819][ T9141] RIP: 0033:0x446769 [ 77.876832][ T9141] Code: e8 bc b4 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0f 83 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 77.876836][ T9141] RSP: 002b:00007f5561023db8 EFLAGS: 00000246 ORIG_RAX: 000000000000013a [ 77.876847][ T9141] RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 0000000000446769 [ 77.876853][ T9141] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000000 [ 77.876859][ T9141] RBP: 00000000006dbc30 R08: 0000000000000000 R09: 0000000000000000 [ 77.876865][ T9141] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc3c [ 77.876871][ T9141] R13: 00007fff4d53be4f R14: 00007f55610249c0 R15: 0000000000000002 [ 78.998542][ T9141] Shutting down cpus with NMI [ 79.710754][ T9141] Kernel Offset: disabled [ 79.715079][ T9141] Rebooting in 86400 seconds..