FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 1, space 0, times 99
CPU: 0 UID: 0 PID: 5329 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 fail_dump lib/fault-inject.c:73 [inline]
 should_fail_ex+0x40c/0x560 lib/fault-inject.c:174
 should_failslab+0xa8/0x100 mm/failslab.c:46
 slab_pre_alloc_hook mm/slub.c:4539 [inline]
 slab_alloc_node mm/slub.c:4897 [inline]
 kmem_cache_alloc_noprof+0xa6/0x5f0 mm/slub.c:4931
 configfs_new_dirent+0x59/0x470 fs/configfs/dir.c:193
 configfs_make_dirent+0x35/0x160 fs/configfs/dir.c:259
 configfs_create_file+0xe3/0x130 fs/configfs/file.c:454
 populate_attrs fs/configfs/dir.c:640 [inline]
 configfs_attach_item+0x8df/0xd60 fs/configfs/dir.c:865
 configfs_attach_group+0x2a/0x370 fs/configfs/dir.c:898
 create_default_group+0x87/0x180 fs/configfs/dir.c:720
 populate_groups fs/configfs/dir.c:741 [inline]
 configfs_attach_group+0x169/0x370 fs/configfs/dir.c:914
 create_default_group+0x87/0x180 fs/configfs/dir.c:720
 populate_groups fs/configfs/dir.c:741 [inline]
 configfs_attach_group+0x169/0x370 fs/configfs/dir.c:914
 configfs_mkdir+0x6f0/0x9e0 fs/configfs/dir.c:1423
 vfs_mkdir+0x406/0x620 fs/namei.c:5276
 filename_mkdirat+0x285/0x510 fs/namei.c:5309
 __do_sys_mkdirat fs/namei.c:5330 [inline]
 __se_sys_mkdirat+0x35/0x150 fs/namei.c:5327
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f57d179de99
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f57d260efe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f57d1a25fa0 RCX: 00007f57d179de99
RDX: 00000000000001ff RSI: 0000200000000200 RDI: ffffffffffffff9c
RBP: 00007f57d1833eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f57d1a26038 R14: 00007f57d1a25fa0 R15: 00007ffe60640da8
 </TASK>
------------[ cut here ]------------
kernel BUG at fs/configfs/dir.c:725!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5329 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:create_default_group+0x17c/0x180 fs/configfs/dir.c:725
Code: 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 44 89 f1 80 e1 07 80 c1 03 38 c1 7c d5 4c 89 f7 e8 9c 1e be ff eb cb e8 f5 ed 4e ff 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41
RSP: 0018:ffffc9000e557bb0 EFLAGS: 00010287
RAX: ffffffff8278265b RBX: ffff88801f9e58f8 RCX: 0000000000100000
RDX: ffffc9000ee8a000 RSI: 000000000000cf3b RDI: 000000000000cf3c
RBP: 00000000fffffff4 R08: ffff88801f9a3983 R09: 1ffff11003f34730
R10: dffffc0000000000 R11: ffffed1003f34731 R12: dffffc0000000000
R13: 1ffff11006774c80 R14: ffff88801f9e5960 R15: ffff888033ba6400
FS:  00007f57d260f6c0(0000) GS:ffff88808c543000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f57d25ccfe8 CR3: 0000000012817000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 populate_groups fs/configfs/dir.c:741 [inline]
 configfs_attach_group+0x169/0x370 fs/configfs/dir.c:914
 configfs_mkdir+0x6f0/0x9e0 fs/configfs/dir.c:1423
 vfs_mkdir+0x406/0x620 fs/namei.c:5276
 filename_mkdirat+0x285/0x510 fs/namei.c:5309
 __do_sys_mkdirat fs/namei.c:5330 [inline]
 __se_sys_mkdirat+0x35/0x150 fs/namei.c:5327
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f57d179de99
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f57d260efe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f57d1a25fa0 RCX: 00007f57d179de99
RDX: 00000000000001ff RSI: 0000200000000200 RDI: ffffffffffffff9c
RBP: 00007f57d1833eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f57d1a26038 R14: 00007f57d1a25fa0 R15: 00007ffe60640da8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:create_default_group+0x17c/0x180 fs/configfs/dir.c:725
Code: 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 44 89 f1 80 e1 07 80 c1 03 38 c1 7c d5 4c 89 f7 e8 9c 1e be ff eb cb e8 f5 ed 4e ff 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41
RSP: 0018:ffffc9000e557bb0 EFLAGS: 00010287
RAX: ffffffff8278265b RBX: ffff88801f9e58f8 RCX: 0000000000100000
RDX: ffffc9000ee8a000 RSI: 000000000000cf3b RDI: 000000000000cf3c
RBP: 00000000fffffff4 R08: ffff88801f9a3983 R09: 1ffff11003f34730
R10: dffffc0000000000 R11: ffffed1003f34731 R12: dffffc0000000000
R13: 1ffff11006774c80 R14: ffff88801f9e5960 R15: ffff888033ba6400
FS:  00007f57d260f6c0(0000) GS:ffff88808c543000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f57d25abfe8 CR3: 0000000012817000 CR4: 0000000000352ef0