ceph: device name is missing path (no : separator in /) watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor4:4584] Modules linked in: irq event stamp: 15301908 hardirqs last enabled at (15301907): [] seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] hardirqs last enabled at (15301907): [] read_seqcount_begin include/linux/seqlock.h:164 [inline] hardirqs last enabled at (15301907): [] read_seqbegin include/linux/seqlock.h:433 [inline] hardirqs last enabled at (15301907): [] read_seqbegin_or_lock include/linux/seqlock.h:529 [inline] hardirqs last enabled at (15301907): [] d_walk+0x80f/0xc80 fs/dcache.c:1248 hardirqs last disabled at (15301908): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (2768660): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311 softirqs last disabled at (2768579): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (2768579): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 CPU: 0 PID: 4584 Comm: syz-executor4 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:ffff88019ec1f8a0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 1ffff10033d83f19 RCX: 1ffff1003b258d3d RDX: 1ffffffff11a316d RSI: 0000000000000004 RDI: 0000000000000286 RBP: ffff88019ec1f9d0 R08: 1ffff10033d83f1d R09: ffffed003b5c46c2 R10: 0000000000000003 R11: 0000000000000003 R12: ffff8801d92c61c0 R13: ffff8801c98f1bd8 R14: ffff8801d92c61c0 R15: ffff88019ec1f8e8 FS: 000000000217e940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000002187978 CR3: 00000001d92f3000 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+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:00007fff99e95888 EFLAGS: 00000206 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007fff99e97630 RDI: 00007fff99e97630 RBP: 00007fff99e97630 R08: 0000000000000000 R09: 0000000000000001 R10: 000000000000000a R11: 0000000000000206 R12: 000000000217f940 R13: 0000000000000000 R14: 0000000000000683 R15: 000000000004dcc5 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: 4581 Comm: syz-executor5 Not tainted 4.17.0-rc4+ #14 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__read_once_size include/linux/compiler.h:188 [inline] RIP: 0010:list_empty include/linux/list.h:203 [inline] RIP: 0010:d_walk+0x427/0xc80 fs/dcache.c:1291 RSP: 0018:ffff8801a026f9f8 EFLAGS: 00000246 RAX: ffff8801c98cfc40 RBX: ffff8801c98cfc40 RCX: ffffed003404df62 RDX: 1ffff10039319f88 RSI: ffffffff81c69519 RDI: 0000000000000005 RBP: ffff8801a026fb78 R08: ffff8801a0242100 R09: ffffed0039319f78 R10: ffffed0039319f78 R11: ffff8801c98cfbc3 R12: ffff8801c98cfb40 R13: dffffc0000000000 R14: ffff8801c98cfbc0 R15: ffff8801a026fb50 FS: 00000000012fa940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd7e41eebc CR3: 00000001a009c000 CR4: 00000000001406e0 DR0: 0000000020000080 DR1: 0000000020000080 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: 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:00007ffd7e41f5c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007ffd7e421370 RDI: 00007ffd7e421370 RBP: 00007ffd7e421370 R08: 0000000000000000 R09: 0000000000000001 R10: 000000000000000a R11: 0000000000000202 R12: 00000000012fb940 R13: 0000000000000000 R14: 0000000000000646 R15: 000000000004dd03 Code: 10 48 8b 8d d0 fe ff ff 48 89 c2 48 c1 ea 03 c6 01 00 42 80 3c 2a 00 0f 85 7f 07 00 00 48 8b 8d d0 fe ff ff 48 8b 5b 10 80 39 00 <0f> 85 4c 07 00 00 48 8b 8d d0 fe ff ff 49 89 5f c0 c6 01 f8 48