watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor.0:10244] Modules linked in: irq event stamp: 29452 hardirqs last enabled at (29451): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:596 hardirqs last disabled at (29452): [] idtentry_enter_cond_rcu+0x2e/0x50 arch/x86/entry/common.c:607 softirqs last enabled at (438): [] asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711 softirqs last disabled at (365): [] asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711 CPU: 1 PID: 10244 Comm: syz-executor.0 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+0x302/0x450 kernel/smp.c:382 Code: 2f 44 89 ee 83 e6 01 31 ff e8 6a 04 0b 00 41 83 e5 01 75 14 e8 4f 00 0b 00 eb 45 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 f3 90 <42> 0f b6 04 23 84 c0 75 0d 41 f6 07 01 74 22 e8 2a 00 0b 00 eb e8 RSP: 0018:ffffc9001875fda0 EFLAGS: 00000246 RAX: ffffffff81697be6 RBX: 1ffff920030ebfb9 RCX: 0000000000040000 RDX: ffffc90001669000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: ffffc9001875fe28 R08: ffffffff81697bb6 R09: ffffed1015d06d11 R10: ffffed1015d06d11 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffffc9001875fdc8 FS: 00007faaec38f700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2be21000 CR3: 0000000084991000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: smp_call_function_many kernel/smp.c:577 [inline] smp_call_function kernel/smp.c:599 [inline] on_each_cpu+0x4d/0x1f0 kernel/smp.c:699 clock_was_set+0x18/0x20 kernel/time/hrtimer.c:872 do_settimeofday64+0x41e/0x520 kernel/time/timekeeping.c:1257 __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+0x196/0x1c0 kernel/time/posix-timers.c:1067 do_syscall_64+0x73/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45cb29 Code: Bad RIP value. RSP: 002b:00007faaec38ec78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3 RAX: ffffffffffffffda RBX: 00000000004db560 RCX: 000000000045cb29 RDX: 0000000000000000 RSI: 0000000020000400 RDI: 0000000000000000 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000007b R14: 00000000004c34ac R15: 00007faaec38f6d4 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 10243 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:mark_lock+0x1a6/0x1b00 kernel/locking/lockdep.c:3978 Code: 00 00 45 85 3e 74 29 65 48 8b 04 25 28 00 00 00 48 3b 84 24 c0 00 00 00 0f 85 cd 12 00 00 44 89 e8 48 8d 65 d8 5b 41 5c 41 5d <41> 5e 41 5f 5d c3 e8 ff 2d ff ff 48 c7 c0 70 5d 6d 89 48 c1 e8 03 RSP: 0018:ffffc90000007b60 EFLAGS: 00000046 RAX: 0000000000000001 RBX: ffff8880a71da000 RCX: ffffffff815a08c2 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8b19a4f8 RBP: ffffc90000007b70 R08: dffffc0000000000 R09: fffffbfff16334a0 R10: fffffbfff16334a0 R11: 0000000000000000 R12: ffff8880a71da940 R13: 1ffff11014e3b528 R14: ffffffff8ad7c518 R15: 0000000000000100 FS: 00007f049a95c700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000180 CR3: 000000008fae3000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mark_usage kernel/locking/lockdep.c:3885 [inline] __lock_acquire+0xbaf/0x2c30 kernel/locking/lockdep.c:4334 lock_acquire+0x160/0x720 kernel/locking/lockdep.c:4959 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline] _raw_spin_lock_irq+0x67/0x80 kernel/locking/spinlock.c:167 __run_hrtimer kernel/time/hrtimer.c:1524 [inline] __hrtimer_run_queues+0x4b1/0x930 kernel/time/hrtimer.c:1584 hrtimer_interrupt+0x373/0xd60 kernel/time/hrtimer.c:1646 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline] __sysvec_apic_timer_interrupt+0xf0/0x260 arch/x86/kernel/apic/apic.c:1097 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] sysvec_apic_timer_interrupt+0xb9/0x130 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:rmqueue_pcplist+0x31a5/0x32d0 mm/page_alloc.c:3352 Code: 80 3c 18 00 74 0c 48 c7 c7 f0 c7 2b 89 e8 23 c8 07 00 48 83 3d 0b 15 80 07 00 0f 84 2b 01 00 00 48 8b bc 24 20 01 00 00 57 9d <0f> 1f 44 00 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 c0 02 00 00 RSP: 0018:ffffc900188b7310 EFLAGS: 00000282 RAX: 1ffffffff12578fe RBX: dffffc0000000000 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000282 RBP: ffff88812fffb700 R08: dffffc0000000000 R09: fffffbfff16334b2 R10: fffffbfff16334b2 R11: 0000000000000000 R12: 1ffffd40001a4a66 R13: ffffea0000d25308 R14: ffffea0000d25300 R15: 0000000000000000 rmqueue+0x49/0x1d10 mm/page_alloc.c:3369 get_page_from_freelist+0x57e/0xa90 mm/page_alloc.c:3791 __alloc_pages_nodemask+0x27e/0x5e0 mm/page_alloc.c:4844 alloc_pages_vma+0x4dd/0xd10 mm/mempolicy.c:2255 shmem_alloc_page mm/shmem.c:1502 [inline] shmem_alloc_and_acct_page+0x40e/0xbe0 mm/shmem.c:1527 shmem_getpage_gfp+0x203e/0x2c60 mm/shmem.c:1823 shmem_getpage mm/shmem.c:153 [inline] shmem_write_begin+0xcd/0x1a0 mm/shmem.c:2459 generic_perform_write+0x23b/0x4e0 mm/filemap.c:3299 __generic_file_write_iter+0x22b/0x4e0 mm/filemap.c:3428 generic_file_write_iter+0x4a6/0x650 mm/filemap.c:3460 call_write_iter include/linux/fs.h:1907 [inline] new_sync_write fs/read_write.c:484 [inline] __vfs_write+0x52f/0x6e0 fs/read_write.c:497 vfs_write+0x274/0x580 fs/read_write.c:559 ksys_pwrite64 fs/read_write.c:666 [inline] __do_sys_pwrite64 fs/read_write.c:676 [inline] __se_sys_pwrite64 fs/read_write.c:673 [inline] __x64_sys_pwrite64+0x151/0x1c0 fs/read_write.c:673 do_syscall_64+0x73/0xe0 arch/x86/entry/common.c:359 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x416987 Code: Bad RIP value. RSP: 002b:00007f049a95ba60 EFLAGS: 00000293 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 000000000050a1a0 RCX: 0000000000416987 RDX: 000000000000003a RSI: 0000000020000100 RDI: 0000000000000004 RBP: 000000000078bf00 R08: fe03f80fe03f80ff R09: 0000000000000000 R10: 0000000000000400 R11: 0000000000000293 R12: 00000000ffffffff R13: 0000000000000c2c R14: 00000000004ce792 R15: 00007f049a95c6d4