watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.3:9647] Modules linked in: irq event stamp: 7262773 hardirqs last enabled at (7262772): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (7262773): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (141398): [] __do_softirq+0x62d/0x919 kernel/softirq.c:318 softirqs last disabled at (143173): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (143173): [] irq_exit+0x17f/0x1c0 kernel/softirq.c:412 CPU: 0 PID: 9647 Comm: syz-executor.3 Not tainted 4.19.192-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_acquire+0x1f1/0x3d0 kernel/locking/lockdep.c:3911 Code: 00 00 00 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 aa 01 00 00 48 83 3d 33 79 c6 06 00 0f 84 31 01 00 00 48 8b 7d c8 57 9d <0f> 1f 44 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 65 8b RSP: 0018:ffff8881f6807c40 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: ffff8881b4cf0680 RCX: 1ffff1103699e1ea RDX: 1ffffffff1024021 RSI: 0000000000000000 RDI: 0000000000000286 RBP: ffff8881f6807c88 R08: 0000000000000e71 R09: 0000000000000001 R10: ffff8881b4cf0f30 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 FS: 00007f9f4c7d6700(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055c13f68f140 CR3: 000000000806d004 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2d/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] pie_timer+0x8e/0x670 net/sched/sch_pie.c:433 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:lock_release+0x465/0x850 kernel/locking/lockdep.c:3931 Code: 7f c6 06 00 0f 84 49 02 00 00 48 8b bd 68 ff ff ff 57 9d 0f 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 48 c7 04 03 00 00 00 00 <48> 8b 45 d0 65 48 33 04 25 28 00 00 00 0f 85 2d 03 00 00 48 83 ec RSP: 0018:ffff8881a05977d8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 1ffff110340b2eff RCX: 1ffff1103699e1df RDX: 1ffffffff1024021 RSI: 0000000000000001 RDI: 0000000000000286 RBP: ffff8881a0597880 R08: 0000000000000000 R09: ffffed10398b5cb9 R10: ffffed10398b5cb9 R11: ffff8881cc5ae5cb R12: ffff8881b4cf0680 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8881b4cf0680 up_write+0x1c/0x150 kernel/locking/rwsem.c:132 i_mmap_unlock_write include/linux/fs.h:496 [inline] unlink_file_vma+0x80/0xa0 mm/mmap.c:163 free_pgtables+0xc6/0x310 mm/memory.c:639 exit_mmap+0x260/0x470 mm/mmap.c:3094 __mmput kernel/fork.c:1015 [inline] mmput+0x107/0x3f0 kernel/fork.c:1036 exit_mm kernel/exit.c:549 [inline] do_exit+0x9ce/0x2cf0 kernel/exit.c:857 do_group_exit+0xf4/0x2f0 kernel/exit.c:967 get_signal+0x316/0x19e0 kernel/signal.c:2589 do_signal+0x87/0x1960 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x114/0x200 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x413/0x4e0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x461209 Code: Bad RIP value. RSP: 002b:00007f9f4c7d61a8 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: 0000000000000006 RBX: 000000000052bfa8 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: 00007f9f4c7d66bc