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: 8602 Comm: syz-executor.1 Not tainted 4.14.184-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880551d0680 task.stack: ffff888052e18000 RIP: 0010:__list_del_entry_valid+0x81/0xef lib/list_debug.c:51 RSP: 0018:ffff888052e1fb88 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: 00000000fffffff4 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880888d55a0 RBP: ffff8880888d5598 R08: ffffffff8a381c00 R09: ffffffff89e63c68 R10: ffff888052e1fba8 R11: ffff8880551d0680 R12: 0000000000000000 R13: 0000000000000000 R14: ffff8880888d55a0 R15: ffffffff87b534c0 FS: 00007f4ca80dd700(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000078c000 CR3: 0000000092d33000 CR4: 00000000001426e0 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+0x9df/0xc30 fs/super.c:537 kernfs_mount_ns+0xd5/0x770 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/0x3c0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x3c9/0x25e0 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: 0033:0x45cba9 RSP: 002b:00007f4ca80dcc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000004f7460 RCX: 000000000045cba9 RDX: 0000000020000000 RSI: 0000000020000140 RDI: 0000000000000000 RBP: 000000000078bfa0 R08: 0000000020000b80 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000006 R13: 0000000000000772 R14: 00000000004ca7d9 R15: 00007f4ca80dd6d4 Code: c5 0f 84 df 00 00 00 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 e0 00 00 00 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 97 00 00 00 49 8d RIP: __list_del_entry_valid+0x81/0xef lib/list_debug.c:51 RSP: ffff888052e1fb88 ---[ end trace 70b787f1bd88220b ]---