EXT4-fs (sda1): re-mounted. Opts: EXT4-fs (sda1): re-mounted. Opts: EXT4-fs (sda1): re-mounted. Opts: EXT4-fs (sda1): re-mounted. Opts: EXT4-fs (sda1): re-mounted. Opts: watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor3:4423] Modules linked in: irq event stamp: 17234168 hardirqs last enabled at (17234167): [] seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] hardirqs last enabled at (17234167): [] read_seqcount_begin include/linux/seqlock.h:164 [inline] hardirqs last enabled at (17234167): [] read_seqbegin include/linux/seqlock.h:433 [inline] hardirqs last enabled at (17234167): [] read_seqbegin_or_lock include/linux/seqlock.h:529 [inline] hardirqs last enabled at (17234167): [] d_walk+0x80f/0xc80 fs/dcache.c:1248 hardirqs last disabled at (17234168): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (437368): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311 softirqs last disabled at (437235): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (437235): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 CPU: 0 PID: 4423 Comm: syz-executor3 Not tainted 4.17.0-rc5+ #57 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:783 [inline] RIP: 0010:lock_release+0x4d4/0xa10 kernel/locking/lockdep.c:3942 RSP: 0018:ffff8801ba1ef8a0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 1ffff1003743df19 RCX: 1ffff10037431d3d RDX: 1ffffffff11a30e5 RSI: 0000000000000004 RDI: 0000000000000286 RBP: ffff8801ba1ef9d0 R08: 1ffff1003743df1d R09: ffffed003b5c46c2 R10: 0000000000000003 R11: 0000000000000003 R12: ffff8801ba18e1c0 R13: ffff8801d4f7ba38 R14: ffff8801ba18e1c0 R15: ffff8801ba1ef8e8 FS: 0000000001745940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8131fd9000 CR3: 00000001bb4a1000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline] _raw_spin_unlock+0x1a/0x30 kernel/locking/spinlock.c:176 spin_unlock include/linux/spinlock.h:350 [inline] d_walk+0x75f/0xc80 fs/dcache.c:1332 shrink_dcache_parent+0x179/0x230 fs/dcache.c:1486 vfs_rmdir+0x202/0x470 fs/namei.c:3850 do_rmdir+0x523/0x610 fs/namei.c:3911 __do_sys_rmdir fs/namei.c:3929 [inline] __se_sys_rmdir fs/namei.c:3927 [inline] __x64_sys_rmdir+0x36/0x40 fs/namei.c:3927 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455777 RSP: 002b:00007ffda49b6bb8 EFLAGS: 00000206 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007ffda49b8960 RDI: 00007ffda49b8960 RBP: 00007ffda49b8960 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000006 R11: 0000000000000206 R12: 0000000001746940 R13: 0000000000000000 R14: 0000000000000104 R15: 0000000000023585 Code: 00 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 a3 03 00 00 48 83 3d 13 80 74 07 00 0f 84 b8 02 00 00 48 8b bd e8 fe ff ff 57 9d <0f> 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4436 Comm: syz-executor2 Not tainted 4.17.0-rc5+ #57 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:mark_lock+0x164/0x19e0 kernel/locking/lockdep.c:3174 RSP: 0018:ffff8801bae374f0 EFLAGS: 00000086 RAX: 0000000000000001 RBX: 0000000000000067 RCX: 1ffff1003926a9ba RDX: 1ffffffff1446fca RSI: ffff8801c9354db0 RDI: ffffffff8a237e50 RBP: ffff8801bae37510 R08: 0000000000000002 R09: 0000000000000003 R10: ffff8801c9354500 R11: ffff8801c9354500 R12: ffff8801c9354db0 R13: 0000000000000001 R14: ffffffff8a237e20 R15: 0000000000000004 FS: 00000000015bd940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdcdb8cf88 CR3: 00000001bba2e000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mark_irqflags kernel/locking/lockdep.c:3039 [inline] __lock_acquire+0x756/0x5140 kernel/locking/lockdep.c:3388 lock_acquire+0x1dc/0x520 kernel/locking/lockdep.c:3920 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:310 [inline] d_walk+0x261/0xc80 fs/dcache.c:1250 shrink_dcache_parent+0x179/0x230 fs/dcache.c:1486 vfs_rmdir+0x202/0x470 fs/namei.c:3850 do_rmdir+0x523/0x610 fs/namei.c:3911 __do_sys_rmdir fs/namei.c:3929 [inline] __se_sys_rmdir fs/namei.c:3927 [inline] __x64_sys_rmdir+0x36/0x40 fs/namei.c:3927 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455777 RSP: 002b:00007fff351b9088 EFLAGS: 00000206 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007fff351bae30 RDI: 00007fff351bae30 RBP: 00007fff351bae30 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000006 R11: 0000000000000206 R12: 00000000015be940 R13: 0000000000000000 R14: 0000000000000108 R15: 0000000000023591 Code: 01 c3 44 89 e8 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 c7 43 10 00 00 00 00 c7 43 18 00 00 00 00 48 81 c4 08 01 00 00 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 48 c7 c7 20 3a 71 8a 48 b8 00 00