R13: 00000000000003fb R14: 00000000006f9028 R15: 000000000000003b
FAT-fs (loop0): bogus number of reserved sectors
FAT-fs (loop0): Can't find a valid FAT filesystem
list_del corruption. prev->next should be 0000000026a53ec9, but was 00000000b17637a1
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:53!
invalid opcode: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 20349 Comm: syz-executor2 Not tainted 4.16.0+ #15
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_del_entry_valid.cold.1+0x48/0x58 lib/list_debug.c:51
RSP: 0018:ffff8801b44bf700 EFLAGS: 00010282
RAX: 0000000000000054 RBX: ffff8801838620f0 RCX: 0000000000000000
RDX: 0000000000000054 RSI: ffffffff815f8fa1 RDI: ffffed0036897ed6
RBP: ffff8801b44bf718 R08: ffff8801b37c2240 R09: ffffed003b604f90
R10: ffffed003b604f90 R11: ffff8801db027c87 R12: ffff880183862aa0
R13: ffff880183862bf0 R14: ffff8801b44bf7f0 R15: dffffc0000000000
FS:  00007f84a5911700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f101b6e1000 CR3: 00000001cf960000 CR4: 00000000001406f0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 00000000000f0602
Call Trace:
 __list_del_entry include/linux/list.h:117 [inline]
 dentry_unlist fs/dcache.c:497 [inline]
 __dentry_kill+0x29e/0x770 fs/dcache.c:550
 dentry_kill+0xc9/0x5a0 fs/dcache.c:672
 dput.part.26+0x648/0x7b0 fs/dcache.c:836
 dput+0x1f/0x30 fs/dcache.c:816
 rpc_gssd_dummy_depopulate net/sunrpc/rpc_pipe.c:1381 [inline]
 rpc_fill_super+0x882/0xbb0 net/sunrpc/rpc_pipe.c:1426
 mount_ns+0x12a/0x1d0 fs/super.c:1036
 rpc_mount+0x9e/0xd0 net/sunrpc/rpc_pipe.c:1451
 mount_fs+0xae/0x328 fs/super.c:1222
 vfs_kern_mount.part.34+0xd4/0x4d0 fs/namespace.c:1037
 vfs_kern_mount fs/namespace.c:1027 [inline]
 do_new_mount fs/namespace.c:2517 [inline]
 do_mount+0x564/0x3070 fs/namespace.c:2847
 ksys_mount+0x12d/0x140 fs/namespace.c:3063
 SYSC_mount fs/namespace.c:3077 [inline]
 SyS_mount+0x35/0x50 fs/namespace.c:3074
 do_syscall_64+0x29e/0x9d0 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x455259
RSP: 002b:00007f84a5910c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f84a59116d4 RCX: 0000000000455259
RDX: 0000000020000080 RSI: 0000000020000040 RDI: 0000000020000000
RBP: 000000000072bea0 R08: 0000000020000080 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014
R13: 00000000000003fb R14: 00000000006f9028 R15: 000000000000003b
Code: e0 71 d8 87 e8 36 d2 28 fe 0f 0b 48 89 de 48 c7 c7 00 73 d8 87 e8 25 d2 28 fe 0f 0b 48 89 de 48 c7 c7 a0 72 d8 87 e8 14 d2 28 fe <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 
RIP: __list_del_entry_valid.cold.1+0x48/0x58 lib/list_debug.c:51 RSP: ffff8801b44bf700
---[ end trace 9c87916e18b1eedb ]---