rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): ------------[ cut here ]------------ IRQs not enabled as expected WARNING: CPU: 1 PID: 16571 at kernel/sched/core.c:2675 try_invoke_on_locked_down_task+0x219/0x380 kernel/sched/core.c:2675 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 16571 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:221 __warn.cold+0x2f/0x35 kernel/panic.c:582 report_bug+0x27b/0x2f0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:105 [inline] fixup_bug arch/x86/kernel/traps.c:100 [inline] do_error_trap+0x12b/0x220 arch/x86/kernel/traps.c:197 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:216 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:try_invoke_on_locked_down_task+0x219/0x380 kernel/sched/core.c:2675 Code: 00 00 85 c9 0f 85 e4 fe ff ff 80 3d 84 01 36 09 00 0f 85 d7 fe ff ff 48 c7 c7 c0 2f 2b 88 c6 05 70 01 36 09 01 e8 bf 28 f4 ff <0f> 0b e9 bd fe ff ff 48 8d 74 24 30 48 89 ef 49 c7 c6 c0 7d 03 00 RSP: 0018:ffffc90000da87d8 EFLAGS: 00010086 RAX: 0000000000000000 RBX: 1ffff920001b50fd RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815d5ba7 RDI: fffff520001b50ed RBP: ffff8880a86c4380 R08: ffff88820d57a000 R09: ffffed1015ce45f2 R10: ffff8880ae722f8b R11: ffffed1015ce45f1 R12: ffffffff8160dab0 R13: ffffc90000da8900 R14: ffff88820d57a000 R15: dffffc0000000000 rcu_print_task_stall kernel/rcu/tree_stall.h:269 [inline] print_other_cpu_stall kernel/rcu/tree_stall.h:477 [inline] check_cpu_stall kernel/rcu/tree_stall.h:636 [inline] rcu_pending kernel/rcu/tree.c:3471 [inline] rcu_sched_clock_irq.cold+0x928/0xd25 kernel/rcu/tree.c:2486 update_process_times+0x25/0x60 kernel/time/timer.c:1726 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:176 tick_sched_timer+0x4e/0x140 kernel/time/tick-sched.c:1320 __run_hrtimer kernel/time/hrtimer.c:1520 [inline] __hrtimer_run_queues+0x5ca/0xed0 kernel/time/hrtimer.c:1584 hrtimer_interrupt+0x312/0x770 kernel/time/hrtimer.c:1646 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline] smp_apic_timer_interrupt+0x15b/0x600 arch/x86/kernel/apic/apic.c:1105 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:765 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x8c/0xe0 kernel/locking/spinlock.c:191 Code: 48 c7 c0 c0 ae 94 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 37 48 83 3d 0b 8e b6 01 00 74 22 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 15 72 71 f9 65 8b 05 f6 fd 23 78 RSP: 0018:ffffc90000da8c70 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13295d8 RBX: 0000000000000282 RCX: 1ffffffff15173ba RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000282 RBP: ffff8880ae727580 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff8c347a6f R11: fffffbfff1868f4d R12: ffff8880ae727580 R13: 00000000ffffffff R14: ffff8880a7b4e430 R15: ffff8880a7b4e420 __mod_timer kernel/time/timer.c:1057 [inline] mod_timer+0x5ac/0xc20 kernel/time/timer.c:1100 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x623/0x1600 kernel/time/timer.c:1786 __do_softirq+0x26c/0x9f7 kernel/softirq.c:292 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1082 do_softirq.part.0+0x10f/0x160 kernel/softirq.c:337 do_softirq kernel/softirq.c:329 [inline] __local_bh_enable_ip+0x20e/0x270 kernel/softirq.c:189 local_bh_enable include/linux/bottom_half.h:32 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:723 [inline] ip_finish_output2+0x8ef/0x2360 net/ipv4/ip_output.c:229 __ip_finish_output net/ipv4/ip_output.c:306 [inline] __ip_finish_output+0x5f3/0xbd0 net/ipv4/ip_output.c:288 ip_finish_output+0x34/0x1f0 net/ipv4/ip_output.c:316 NF_HOOK_COND include/linux/netfilter.h:296 [inline] ip_output+0x1fe/0x620 net/ipv4/ip_output.c:430 dst_output include/net/dst.h:435 [inline] ip_local_out+0xaf/0x1a0 net/ipv4/ip_output.c:125 __ip_queue_xmit+0x863/0x1c20 net/ipv4/ip_output.c:530 sctp_packet_transmit+0x19fc/0x3490 net/sctp/output.c:629 sctp_outq_flush_transports net/sctp/outqueue.c:1147 [inline] sctp_outq_flush+0x2b2/0x2340 net/sctp/outqueue.c:1195 sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1801 [inline] sctp_side_effects net/sctp/sm_sideeffect.c:1185 [inline] sctp_do_sm+0x4db/0x4ec0 net/sctp/sm_sideeffect.c:1156 sctp_assoc_bh_rcv+0x386/0x6d0 net/sctp/associola.c:1044 sctp_inq_push+0x1da/0x270 net/sctp/inqueue.c:80 sctp_backlog_rcv+0x1f3/0x1290 net/sctp/input.c:344 sk_backlog_rcv include/net/sock.h:996 [inline] __release_sock+0x134/0x3a0 net/core/sock.c:2548 release_sock+0x54/0x1b0 net/core/sock.c:3064 sctp_setsockopt net/sctp/socket.c:4880 [inline] sctp_setsockopt+0x1e9/0x7090 net/sctp/socket.c:4677 compat_sock_common_setsockopt+0xf6/0x120 net/core/sock.c:3273 __compat_sys_setsockopt+0x15d/0x310 net/compat.c:402 __do_compat_sys_setsockopt net/compat.c:415 [inline] __se_compat_sys_setsockopt net/compat.c:412 [inline] __ia32_compat_sys_setsockopt+0xb9/0x150 net/compat.c:412 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline] do_fast_syscall_32+0x270/0xe90 arch/x86/entry/common.c:396 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 Shutting down cpus with NMI Kernel Offset: disabled Rebooting in 86400 seconds..