watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.2:8402] Modules linked in: irq event stamp: 6093913 hardirqs last enabled at (6093912): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:168 [inline] hardirqs last enabled at (6093912): [] _raw_spin_unlock_irq+0x27/0x80 kernel/locking/spinlock.c:192 hardirqs last disabled at (6093913): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (5484): [] rcu_read_unlock_bh include/linux/rcupdate.h:717 [inline] softirqs last enabled at (5484): [] __dev_queue_xmit+0x1276/0x2a80 net/core/dev.c:3865 softirqs last disabled at (5527): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (5527): [] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 CPU: 0 PID: 8402 Comm: syz-executor.2 Not tainted 4.19.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:qdisc_root_sleeping include/net/sch_generic.h:432 [inline] RIP: 0010:pie_timer+0x74/0x670 net/sched/sch_pie.c:431 Code: ea 03 80 3c 02 00 0f 85 c0 05 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 63 40 49 8d 7c 24 10 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 92 05 00 00 4d 8b 7c 24 10 49 81 c7 e8 00 00 00 4c 89 ff e8 RSP: 0018:ffff8881f6807cb8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: ffff8881aba396c0 RCX: 0000000000000000 RDX: 1ffff1103ad6cd0a RSI: ffffffff88199a60 RDI: ffff8881d6b66850 RBP: ffff8881f6807d20 R08: ffffed103ed04733 R09: ffffed103ed04732 R10: ffffed103ed04732 R11: ffff8881f6823993 R12: ffff8881d6b66840 R13: ffff8881f6807dd0 R14: ffff8881aba399b0 R15: ffff8881f6823a00 FS: 00007f8ae8c37700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcc224dff8 CR3: 00000001b6c93004 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: call_timer_fn+0x14c/0x510 kernel/time/timer.c:1338 expire_timers kernel/time/timer.c:1375 [inline] __run_timers kernel/time/timer.c:1696 [inline] __run_timers kernel/time/timer.c:1664 [inline] run_timer_softirq+0xb63/0x1180 kernel/time/timer.c:1709 __do_softirq+0x25f/0x919 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:535 [inline] smp_apic_timer_interrupt+0x13e/0x540 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:generic_exec_single+0x281/0x390 kernel/smp.c:154 Code: 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ef 00 00 00 48 83 3d c2 bc ba 06 00 0f 84 8e 00 00 00 48 89 df 57 9d <0f> 1f 44 00 00 31 d2 e9 7d fe ff ff 4c 89 e7 e8 bb dd 38 00 e9 a4 RSP: 0018:ffff8881a48c7aa8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 0000000000000286 RCX: 1ffff1103496a522 RDX: 1ffffffff1024021 RSI: ffff8881a4b528f0 RDI: 0000000000000286 RBP: ffff8881a48c7ad0 R08: ffff8881a4b52910 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881a48c7b38 R13: ffff8881a48c7be0 R14: ffffffff8172e2a0 R15: 0000000000000001 smp_call_function_single+0xe5/0x370 kernel/smp.c:299 task_function_call+0xe5/0x140 kernel/events/core.c:115 perf_install_in_context+0x1ca/0x310 kernel/events/core.c:2622 __do_sys_perf_event_open+0x13fa/0x20d0 kernel/events/core.c:10900 __se_sys_perf_event_open kernel/events/core.c:10525 [inline] __x64_sys_perf_event_open+0xb9/0x140 kernel/events/core.c:10525 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x461209 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f8ae8c371a8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 000000000052bf00 RCX: 0000000000461209 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 000000002001d000 RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004f42a8 R14: 00000000004b240a R15: 00007f8ae8c376bc