kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 30867 Comm: syz-executor5 Not tainted 4.16.0+ #2 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_del_entry_valid+0x84/0xf3 lib/list_debug.c:51 RSP: 0000:ffff88019dd2f618 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff8801be7c4418 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8801be7c4420 RBP: ffff88019dd2f630 R08: fffffbfff118bf7d R09: fffffbfff118bf7c R10: ffff88019dd2f630 R11: ffffffff88c5fbe7 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88019dd2f6c0 R15: ffff8801be7c4418 FS: 00007f5979ed8700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fce00a3a480 CR3: 000000019d1dc000 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+0xa0/0x350 fs/kernfs/mount.c:361 sysfs_kill_sb+0x22/0x40 fs/sysfs/mount.c:50 deactivate_locked_super+0x97/0x100 fs/super.c:312 sget_userns+0xc9d/0xf20 fs/super.c:522 kernfs_mount_ns+0x13d/0x8e0 fs/kernfs/mount.c:320 sysfs_mount+0xdf/0x200 fs/sysfs/mount.c:36 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: 0033:0x455329 RSP: 002b:00007f5979ed7c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f5979ed86d4 RCX: 0000000000455329 RDX: 0000000020000140 RSI: 0000000020000100 RDI: 0000000020000180 RBP: 000000000072bea0 R08: 00000000200004c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000013 R13: 00000000000003fb R14: 00000000006f9028 R15: 0000000000000021 Code: c5 0f 84 cc 00 00 00 48 b8 00 02 00 00 00 00 ad de 49 39 c4 0f 84 a5 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 5f 49 8b 14 24 48 39 da 0f 85 ba 00 00 00 48 b8 RIP: __list_del_entry_valid+0x84/0xf3 lib/list_debug.c:51 RSP: ffff88019dd2f618 ---[ end trace 0dfd37be9766cd99 ]---