gfs2: gfs2 mount does not exist watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor7:4536] Modules linked in: irq event stamp: 9281860 hardirqs last enabled at (9281859): [] seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] hardirqs last enabled at (9281859): [] read_seqcount_begin include/linux/seqlock.h:164 [inline] hardirqs last enabled at (9281859): [] read_seqbegin include/linux/seqlock.h:433 [inline] hardirqs last enabled at (9281859): [] read_seqbegin_or_lock include/linux/seqlock.h:529 [inline] hardirqs last enabled at (9281859): [] d_walk+0x80f/0xc80 fs/dcache.c:1248 hardirqs last disabled at (9281860): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (8282336): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311 softirqs last disabled at (8281977): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (8281977): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 CPU: 0 PID: 4536 Comm: syz-executor7 Not tainted 4.17.0-rc4+ #14 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:ffff8801a3ab78a0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 1ffff10034756f19 RCX: 1ffff10034755185 RDX: 1ffffffff11a316d RSI: 0000000000000005 RDI: 0000000000000286 RBP: ffff8801a3ab79d0 R08: 1ffff10034756f1d R09: ffff8801a3ab7728 R10: 0000000000000003 R11: 0000000000000004 R12: ffff8801a3aa8400 R13: ffff8801b45fd7b8 R14: ffff8801a3aa8400 R15: ffff8801a3ab78e8 FS: 0000000001cfd940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe92aaef58 CR3: 00000001a39ce000 CR4: 00000000001406f0 DR0: 00000000200001c0 DR1: 00000000200001c0 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 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+0x451/0xc80 fs/dcache.c:1298 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:00007ffe92aaf718 EFLAGS: 00000206 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007ffe92ab14c0 RDI: 00007ffe92ab14c0 RBP: 00007ffe92ab14c0 R08: 0000000000000000 R09: 0000000000000001 R10: 000000000000000a R11: 0000000000000206 R12: 0000000001cfe940 R13: 0000000000000000 R14: 0000000000000305 R15: 0000000000024fde Code: 00 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 a3 03 00 00 48 83 3d 73 84 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: 4540 Comm: syz-executor3 Not tainted 4.17.0-rc4+ #14 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:perf_trace_lock_acquire+0x8e/0x980 include/trace/events/lock.h:13 RSP: 0018:ffff88019ffff6e0 EFLAGS: 00000082 RAX: ffffed0033fffee6 RBX: 1ffff10033fffee6 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: ffff8801c9aacd38 RDI: ffffffff88d77120 RBP: ffff88019ffff8b8 R08: 0000000000000000 R09: ffff8801c9aacd38 R10: ffffffff815bf400 R11: dffffc0000000000 R12: ffff88019ffff890 R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff88d77120 FS: 0000000002252940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff04f1eefc CR3: 000000019ffba000 CR4: 00000000001406e0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x38e/0x520 kernel/locking/lockdep.c:3919 _raw_spin_lock_nested+0x28/0x40 kernel/locking/spinlock.c:354 d_walk+0x3ad/0xc80 fs/dcache.c:1274 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:00007fff04f1f608 EFLAGS: 00000202 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007fff04f213b0 RDI: 00007fff04f213b0 RBP: 00007fff04f213b0 R08: 0000000000000000 R09: 0000000000000001 R10: 000000000000000a R11: 0000000000000202 R12: 0000000002253940 R13: 0000000000000000 R14: 00000000000002ff R15: 0000000000025048 Code: ff ff c7 00 f1 f1 f1 f1 c7 40 04 04 f2 f2 f2 c7 40 08 f2 f2 f2 f2 c7 40 0c 04 f2 f2 f2 c7 40 10 f2 f2 f2 f2 c7 40 14 00 f2 f2 f2 40 18 f2 f2 f2 f2 c7 40 1c 00 f2 f2 f2 c7 40 20 f2 f2 f2 f2