RBP: 00007fd7251bc1d0 R08: 0000000020000340 R09: 0000000000000000 R10: 0000000002800004 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fff62a6b3cf R14: 00007fd7251bc300 R15: 0000000000022000 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 1 PID: 24095 Comm: syz-executor.4 Not tainted 4.14.230-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88804431c400 task.stack: ffff8880511b8000 RIP: 0010:__list_del_entry_valid+0x81/0xf0 lib/list_debug.c:51 RSP: 0018:ffff8880511bfb48 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 00000000fffffff4 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88809dab1020 RBP: ffff88809dab1018 R08: 0000000000000000 R09: 0000000000040057 R10: ffff88804431ccb0 R11: ffff88804431c400 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88809dab1020 R15: dffffc0000000000 FS: 00007fd7251bc700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33022000 CR3: 000000009d06a000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:117 [inline] list_del include/linux/list.h:125 [inline] kernfs_kill_sb+0x5b/0x1b0 fs/kernfs/mount.c:365 sysfs_kill_sb+0x1e/0x30 fs/sysfs/mount.c:53 deactivate_locked_super+0x6c/0xd0 fs/super.c:319 sget_userns+0x9c4/0xc10 fs/super.c:537 kernfs_mount_ns+0xd5/0x7c0 fs/kernfs/mount.c:324 sysfs_mount+0xa1/0x160 fs/sysfs/mount.c:39 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0xe53/0x2a00 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3072 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x466459 RSP: 002b:00007fd7251bc188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000000000056c0b0 RCX: 0000000000466459 RDX: 0000000020000380 RSI: 0000000020000140 RDI: 0000000000000000 RBP: 00007fd7251bc1d0 R08: 0000000020000340 R09: 0000000000000000 R10: 0000000002800004 R11: 0000000000000246 R12: 0000000000000002 R13: 00007fff62a6b3cf R14: 00007fd7251bc300 R15: 0000000000022000 Code: c5 0f 84 3a 83 ef 03 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 3b 83 ef 03 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 51 49 8b 14 24 48 39 ea 0f 85 f2 82 ef 03 49 8d RIP: __list_del_entry_valid+0x81/0xf0 lib/list_debug.c:51 RSP: ffff8880511bfb48 ---[ end trace 9cc658a1db171d76 ]---