watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor.5:16888] Modules linked in: irq event stamp: 14432440 hardirqs last enabled at (14432439): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596 hardirqs last disabled at (14432440): [] idtentry_enter_cond_rcu+0x1d/0x50 arch/x86/entry/common.c:607 softirqs last enabled at (12062984): [] __do_softirq+0x748/0xa60 kernel/softirq.c:319 softirqs last disabled at (12062967): [] asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711 CPU: 0 PID: 16888 Comm: syz-executor.5 Not tainted 5.8.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline] RIP: 0010:smp_call_function_single+0x192/0x4f0 kernel/smp.c:382 Code: 10 8b 7c 24 1c 48 8d 74 24 40 48 89 44 24 50 48 8b 44 24 08 48 89 44 24 58 e8 fa f9 ff ff 41 89 c5 eb 07 e8 f0 ff 0a 00 f3 90 <44> 8b 64 24 48 31 ff 41 83 e4 01 44 89 e6 e8 5b fc 0a 00 45 85 e4 RSP: 0018:ffffc900088a7c00 EFLAGS: 00000246 RAX: 0000000000040000 RBX: 1ffff92001114f84 RCX: ffffc90013d8d000 RDX: 0000000000040000 RSI: ffffffff8168b730 RDI: 0000000000000005 RBP: ffffc900088a7cc8 R08: 0000000000000001 R09: ffff8880ae736dc7 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000040 FS: 00007f123ccbb700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000078c000 CR3: 00000000a8a21000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: smp_call_function_many_cond+0x1a4/0x990 kernel/smp.c:518 smp_call_function_many kernel/smp.c:577 [inline] smp_call_function kernel/smp.c:599 [inline] on_each_cpu+0x4a/0x240 kernel/smp.c:699 clock_was_set+0x18/0x20 kernel/time/hrtimer.c:872 do_settimeofday64 kernel/time/timekeeping.c:1257 [inline] do_settimeofday64+0x350/0x4e0 kernel/time/timekeeping.c:1223 do_sys_settimeofday64 kernel/time/time.c:195 [inline] do_sys_settimeofday64+0x1de/0x260 kernel/time/time.c:169 __do_sys_clock_settime kernel/time/posix-timers.c:1079 [inline] __se_sys_clock_settime kernel/time/posix-timers.c:1067 [inline] __x64_sys_clock_settime+0x197/0x260 kernel/time/posix-timers.c:1067 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45cb29 Code: Bad RIP value. RSP: 002b:00007f123ccbac78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3 RAX: ffffffffffffffda RBX: 00000000004db520 RCX: 000000000045cb29 RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000000 RBP: 000000000078bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000007b R14: 00000000004c34ac R15: 00007f123ccbb6d4 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 1 Comm: systemd Not tainted 5.8.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:lock_acquire+0x28b/0xad0 kernel/locking/lockdep.c:4931 Code: 08 00 0f 84 a6 05 00 00 48 8b 7c 24 08 57 9d 0f 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 48 03 44 24 10 48 c7 00 00 00 00 00 <48> c7 40 08 00 00 00 00 48 8b 84 24 b8 00 00 00 65 48 2b 04 25 28 RSP: 0000:ffffc90000da86f8 EFLAGS: 00000082 RAX: fffff520001b50e3 RBX: ffff8880a958e040 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: 0000000000000008 RDI: 0000000000000082 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8c58fa2f R10: fffffbfff18b1f45 R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880ae727758 R14: 0000000000000000 R15: ffff8880a958e040 FS: 00007ff64a925500(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f37b4058000 CR3: 000000009f2d6000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline] _raw_spin_lock_irq+0x5b/0x80 kernel/locking/spinlock.c:167 __run_hrtimer kernel/time/hrtimer.c:1524 [inline] __hrtimer_run_queues+0x252/0xfc0 kernel/time/hrtimer.c:1584 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1646 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline] __sysvec_apic_timer_interrupt+0x142/0x5e0 arch/x86/kernel/apic/apic.c:1097 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:50 [inline] sysvec_apic_timer_interrupt+0x4f/0x120 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:765 [inline] RIP: 0010:seqcount_lockdep_reader_access include/linux/seqlock.h:99 [inline] RIP: 0010:read_seqcount_begin.constprop.0+0x110/0x1f0 include/linux/seqlock.h:182 Code: 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 d0 00 00 00 48 83 3d e0 83 50 08 00 0f 84 92 00 00 00 e8 b5 5a 0f 00 48 89 df 57 9d <0f> 1f 44 00 00 e8 a6 5a 0f 00 44 8b 25 7f bd 58 08 31 ff 44 89 e3 RSP: 0000:ffffc90000da8ae8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000246 RCX: 0000000000000000 RDX: ffff8880a958e040 RSI: ffffffff81645c6b RDI: 0000000000000246 RBP: 0000000000000200 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffffff838d0890 R13: ffff88809f665440 R14: ffff88809f665450 R15: dffffc0000000000 ktime_get+0x3e/0x120 kernel/time/timekeeping.c:757 blkcg_iolatency_done_bio+0x8c/0x1720 block/blk-iolatency.c:594 __rq_qos_done_bio+0x55/0xa0 block/blk-rq-qos.c:99 rq_qos_done_bio block/blk-rq-qos.h:171 [inline] bio_endio+0x1e9/0x8d0 block/bio.c:1421 req_bio_endio block/blk-core.c:261 [inline] blk_update_request+0x68c/0x1230 block/blk-core.c:1569 scsi_end_request+0x7a/0x8b0 drivers/scsi/scsi_lib.c:558 scsi_io_completion+0x1df/0x1310 drivers/scsi/scsi_lib.c:934 scsi_softirq_done+0x327/0x3c0 drivers/scsi/scsi_lib.c:1460 blk_done_softirq+0x2db/0x430 block/blk-softirq.c:37 __do_softirq+0x34c/0xa60 kernel/softirq.c:292 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0x111/0x170 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:387 [inline] __irq_exit_rcu kernel/softirq.c:417 [inline] irq_exit_rcu+0x229/0x270 kernel/softirq.c:429 common_interrupt+0xa1/0x220 arch/x86/kernel/irq.c:239 asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:587 RIP: 0033:0x7ff64a5ebbd0 Code: Bad RIP value. RSP: 002b:00007ffcc1af4098 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 000055b44116af50 RCX: 00007ff6491c322d RDX: 000055b44116af70 RSI: 00071afd498d0068 RDI: 000055b4411d4d80 RBP: 000055b44116af70 R08: a4e054e6bbd7c01d R09: 00007ffcc1b360f0 R10: 0000000000017800 R11: 0000000000000000 R12: 00071afd498d0068 R13: 0000000000000001 R14: 00007ffcc1af40cc R15: 00007ffcc1af40cc