NFS: bad mount option value specified: v­ NFS: bad mount option value specified: v­ watchdog: BUG: soft lockup - CPU#1 stuck for 134s! [syz-executor4:4553] Modules linked in: irq event stamp: 64782234 hardirqs last enabled at (64782233): [] seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] hardirqs last enabled at (64782233): [] read_seqcount_begin include/linux/seqlock.h:164 [inline] hardirqs last enabled at (64782233): [] read_seqbegin include/linux/seqlock.h:433 [inline] hardirqs last enabled at (64782233): [] read_seqbegin_or_lock include/linux/seqlock.h:529 [inline] hardirqs last enabled at (64782233): [] d_walk+0x80f/0xc80 fs/dcache.c:1248 hardirqs last disabled at (64782234): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (1536656): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311 softirqs last disabled at (1536499): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (1536499): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 CPU: 1 PID: 4553 Comm: syz-executor4 Not tainted 4.17.0-rc4+ #19 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_acquire+0x257/0x520 kernel/locking/lockdep.c:3923 RSP: 0018:ffff88019d5378d8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 1ffff10033aa6f20 RCX: 0000000000000000 RDX: 1ffffffff11a316d RSI: ffff88019d52ea38 RDI: 0000000000000286 RBP: ffff88019d5379c8 R08: 0000000000006014 R09: 0000000000000003 R10: ffff88019d52eab0 R11: ffff88019d52e200 R12: ffff88019d52e200 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 FS: 0000000001c64940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc93a98ab40 CR3: 000000019db9c000 CR4: 00000000001406e0 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+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:00007fffba58f9a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007fffba591750 RDI: 00007fffba591750 RBP: 00007fffba591750 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000006 R11: 0000000000000202 R12: 0000000001c65940 R13: 0000000000000000 R14: 00000000000001d4 R15: 000000000001cfe5 Code: 00 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 5e 02 00 00 48 83 3d e0 7c 74 07 00 0f 84 c8 01 00 00 48 8b bd 20 ff 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 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4550 Comm: syz-executor2 Not tainted 4.17.0-rc4+ #19 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_acquire+0xa78/0x5140 kernel/locking/lockdep.c:3434 RSP: 0018:ffff88019f90f520 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: ffffffff89c2d488 RCX: 0000000000000001 RDX: 1ffff10033f2052d RSI: ffff88019f902978 RDI: ffffffff89c2d498 RBP: ffff88019f90f8a8 R08: 0000000000000493 R09: 0000000000000004 R10: ffff88019f902a18 R11: ffff88019f902140 R12: 1ffff10033f21ecc R13: 0000000000000000 R14: 2a4064e7cce7db2e R15: 0000000000000000 FS: 00000000012f0940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004ce280 CR3: 000000019f82a000 CR4: 00000000001406f0 DR0: 00000000200001c0 DR1: 00000000200001c0 DR2: 00000000200001c0 DR3: 00000000200001c0 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: lock_acquire+0x1dc/0x520 kernel/locking/lockdep.c:3920 _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:00007fff56ce6518 EFLAGS: 00000206 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007fff56ce82c0 RDI: 00007fff56ce82c0 RBP: 00007fff56ce82c0 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000005 R11: 0000000000000206 R12: 00000000012f1940 R13: 0000000000000000 R14: 00000000000001da R15: 000000000001cede Code: 0f 85 ba 31 00 00 8b 0d 17 14 ad 07 85 c9 0f 84 62 f7 ff ff 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 78 48 c1 ea 03 80 3c 02 00 <0f> 85 fd 32 00 00 48 8b 94 24 88 00 00 00 4d 89 b3 28 08 00 00