------------[ cut here ]------------ kernel BUG at lib/lockref.c:189! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 8898 Comm: syz-executor.2 Not tainted 5.2.0-next-20190708 #33 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:lockref_mark_dead lib/lockref.c:189 [inline] RIP: 0010:lockref_mark_dead+0x8b/0xa0 lib/lockref.c:187 Code: 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 04 3c 03 7e 1d c7 43 38 80 ff ff ff 5b 41 5c 5d c3 e8 75 19 38 fe <0f> 0b 48 89 df e8 0b 59 72 fe eb ab e8 a4 59 72 fe eb dc 90 90 55 RSP: 0018:ffff88808587fc90 EFLAGS: 00010293 RAX: ffff88808c24c0c0 RBX: ffff888092853e80 RCX: ffffffff833a3abf RDX: 0000000000000000 RSI: ffffffff833a3afb RDI: 0000000000000005 RBP: ffff88808587fca0 R08: ffff88808c24c0c0 R09: ffffed101250a7d1 R10: ffffed101250a7d0 R11: ffff888092853e83 R12: 0000000000000000 R13: ffff888092853e80 R14: ffff888092853e00 R15: 0000000000000000 FS: 000055555715c940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555557165978 CR3: 000000008c39e000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __dentry_kill+0x5f/0x600 fs/dcache.c:560 shrink_dcache_parent+0x2c9/0x3d0 fs/dcache.c:1565 vfs_rmdir fs/namei.c:3882 [inline] vfs_rmdir+0x26f/0x4f0 fs/namei.c:3857 do_rmdir+0x39e/0x420 fs/namei.c:3940 __do_sys_rmdir fs/namei.c:3958 [inline] __se_sys_rmdir fs/namei.c:3956 [inline] __x64_sys_rmdir+0x36/0x40 fs/namei.c:3956 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459537 Code: 00 66 90 b8 57 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 54 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fff8f413ed8 EFLAGS: 00000207 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000459537 RDX: 0000000000000000 RSI: 0000000000714698 RDI: 00007fff8f415010 RBP: 0000000000000126 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000006 R11: 0000000000000207 R12: 00007fff8f415010 R13: 000055555715d940 R14: 0000000000000000 R15: 00007fff8f415010 Modules linked in: ---[ end trace 16e0bcc5d161045c ]--- RIP: 0010:lockref_mark_dead lib/lockref.c:189 [inline] RIP: 0010:lockref_mark_dead+0x8b/0xa0 lib/lockref.c:187 Code: 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 04 02 84 c0 74 04 3c 03 7e 1d c7 43 38 80 ff ff ff 5b 41 5c 5d c3 e8 75 19 38 fe <0f> 0b 48 89 df e8 0b 59 72 fe eb ab e8 a4 59 72 fe eb dc 90 90 55 RSP: 0018:ffff88808587fc90 EFLAGS: 00010293 RAX: ffff88808c24c0c0 RBX: ffff888092853e80 RCX: ffffffff833a3abf RDX: 0000000000000000 RSI: ffffffff833a3afb RDI: 0000000000000005 RBP: ffff88808587fca0 R08: ffff88808c24c0c0 R09: ffffed101250a7d1 R10: ffffed101250a7d0 R11: ffff888092853e83 R12: 0000000000000000 R13: ffff888092853e80 R14: ffff888092853e00 R15: 0000000000000000 FS: 000055555715c940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555557165978 CR3: 000000008c39e000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400