ceph: device name is missing path (no : separator in /) ceph: device name is missing path (no : separator in /) watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor3:4580] Modules linked in: irq event stamp: 14466524 hardirqs last enabled at (14466523): [] seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] hardirqs last enabled at (14466523): [] read_seqcount_begin include/linux/seqlock.h:164 [inline] hardirqs last enabled at (14466523): [] read_seqbegin include/linux/seqlock.h:433 [inline] hardirqs last enabled at (14466523): [] read_seqbegin_or_lock include/linux/seqlock.h:529 [inline] hardirqs last enabled at (14466523): [] d_walk+0x80f/0xc80 fs/dcache.c:1248 hardirqs last disabled at (14466524): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (2200962): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311 softirqs last disabled at (2200877): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (2200877): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 CPU: 0 PID: 4580 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:__write_once_size include/linux/compiler.h:215 [inline] RIP: 0010:write_comp_data+0x6c/0x70 kernel/kcov.c:144 RSP: 0018:ffff8801a1fa79b0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff81c694f7 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000005 RBP: ffff8801a1fa79b0 R08: ffff8801a1f98080 R09: ffffed0039311d54 R10: ffffed0039311d54 R11: ffff8801c988eaa3 R12: ffffffff87d34500 R13: 0000000000000000 R14: 0000000000000005 R15: 0000000000000003 FS: 0000000001fdd940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000093002d CR3: 00000001a1f9a000 CR4: 00000000001406f0 DR0: 0000000020000280 DR1: 00000000200001c0 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: __sanitizer_cov_trace_switch+0x53/0x90 kernel/kcov.c:224 d_walk+0x3d7/0xc80 fs/dcache.c:1277 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:00007ffcbbfa2158 EFLAGS: 00000202 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007ffcbbfa3f00 RDI: 00007ffcbbfa3f00 RBP: 00007ffcbbfa3f00 R08: 0000000000000000 R09: 0000000000000001 R10: 000000000000000a R11: 0000000000000202 R12: 0000000001fde940 R13: 0000000000000000 R14: 000000000000053c R15: 0000000000036843 Code: 00 00 00 4e 8d 14 dd 28 00 00 00 4d 39 d0 72 1b 49 83 c1 01 4a 89 7c 10 e0 4a 89 74 10 e8 4a 89 54 10 f0 4a 89 4c d8 20 4c 89 08 <5d> c3 66 90 55 65 48 8b 04 25 c0 ed 01 00 65 8b 15 af bf 88 7e Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4579 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:hlock_class kernel/locking/lockdep.c:145 [inline] RIP: 0010:mark_lock+0xae/0x19e0 kernel/locking/lockdep.c:3121 RSP: 0018:ffff8801a224f830 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 1ffff10034449f0b RCX: 0000000000000003 RDX: dffffc0000000000 RSI: ffff8801a2244878 RDI: ffff8801a2244040 RBP: ffff8801a224f960 R08: 0000000000000003 R09: 0000000000000002 R10: ffff8801a2244040 R11: 0000000000000000 R12: ffff8801a2244878 R13: ffff8801a2244898 R14: 0000000000000003 R15: 0000000000000008 FS: 0000000001142940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000114b978 CR3: 00000001a2202000 CR4: 00000000001406e0 DR0: 00000000200001c0 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: mark_held_locks+0xc9/0x160 kernel/locking/lockdep.c:2807 __trace_hardirqs_on_caller kernel/locking/lockdep.c:2828 [inline] trace_hardirqs_on_caller+0x19e/0x5c0 kernel/locking/lockdep.c:2883 trace_hardirqs_on+0xd/0x10 kernel/locking/lockdep.c:2890 seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] read_seqcount_begin include/linux/seqlock.h:164 [inline] read_seqbegin include/linux/seqlock.h:433 [inline] read_seqbegin_or_lock include/linux/seqlock.h:529 [inline] d_walk+0x80f/0xc80 fs/dcache.c:1248 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:00007ffd75f54bf8 EFLAGS: 00000202 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007ffd75f569a0 RDI: 00007ffd75f569a0 RBP: 00007ffd75f569a0 R08: 0000000000000000 R09: 0000000000000001 R10: 000000000000000a R11: 0000000000000202 R12: 0000000001143940 R13: 0000000000000000 R14: 0000000000000537 R15: 0000000000036851 Code: 40 10 f2 f2 f2 f2 c7 40 14 04 f2 f2 f2 c7 40 18 f3 f3 f3 f3 4c 89 e8 48 c1 e8 03 0f b6 04 10 84 c0 74 08 3c 01 0f 8e 61 06 00 00 <41> 0f b7 44 24 20 66 a9 ff 1f 0f 84 b0 00 00 00 48 ba 00 00 00