R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f72057bb000 R15: 0000000020012900
 </TASK>
================================================
WARNING: lock held when returning to user space!
6.18.0-rc7-next-20251128 #1 Not tainted
------------------------------------------------
syz-executor.4/9653 is leaving the kernel with locks still held!
1 lock held by syz-executor.4/9653:
 #0: ffff888016220848 (&sb->s_type->i_mutex_key#23/1){+.+.}-{4:4}, at: start_creating_noperm+0x84/0xd0
loop3: detected capacity change from 0 to 512
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 UID: 0 PID: 9661 Comm: syz-executor.3 Not tainted 6.18.0-rc7-next-20251128 #1 PREEMPT(voluntary) 
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xfa/0x120
 should_fail_ex+0x4d7/0x5e0
 should_failslab+0xc2/0x120
 kmem_cache_alloc_noprof+0x80/0x710
 getname_flags.part.0+0x48/0x540
 __x64_sys_mkdir+0xdb/0x140
 do_syscall_64+0xbf/0x420
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2dac419c27
Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2da998ffa8 EFLAGS: 00000213 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f2dac419c27
RDX: 0000000000000004 RSI: 00000000000001ff RDI: 0000000020000100
RBP: 00007f2da9990040 R08: 0000000000000000 R09: ffffffffffffffff
R10: 0000000000000000 R11: 0000000000000213 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f2da9990000 R15: 0000000020012900
 </TASK>
loop3: detected capacity change from 0 to 512
EXT4-fs (loop3): ext4_check_descriptors: Inode bitmap for group 0 not in group (block 0)!
EXT4-fs (loop3): group descriptors corrupted!
loop6: detected capacity change from 0 to 512
loop5: detected capacity change from 0 to 512
EXT4-fs (loop5): ext4_check_descriptors: Inode table for group 0 not in group (block 0)!
EXT4-fs (loop5): group descriptors corrupted!
EXT4-fs (loop6): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
EXT4-fs (loop6): unmounting filesystem 00000000-0000-0000-0000-000000000000.
Process accounting resumed
loop3: detected capacity change from 0 to 512
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 UID: 0 PID: 9694 Comm: syz-executor.3 Not tainted 6.18.0-rc7-next-20251128 #1 PREEMPT(voluntary) 
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xfa/0x120
 should_fail_ex+0x4d7/0x5e0
 should_failslab+0xc2/0x120
 kmem_cache_alloc_noprof+0x80/0x710
 getname_flags.part.0+0x48/0x540
 __x64_sys_mkdir+0xdb/0x140
 do_syscall_64+0xbf/0x420
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2dac419c27
Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2da998ffa8 EFLAGS: 00000213 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f2dac419c27
RDX: 0000000000000004 RSI: 00000000000001ff RDI: 0000000020000100
RBP: 00007f2da9990040 R08: 0000000000000000 R09: ffffffffffffffff
R10: 0000000000000000 R11: 0000000000000213 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f2da9990000 R15: 0000000020012900
 </TASK>
loop6: detected capacity change from 0 to 512
loop5: detected capacity change from 0 to 512
EXT4-fs (loop6): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 UID: 0 PID: 9699 Comm: syz-executor.5 Not tainted 6.18.0-rc7-next-20251128 #1 PREEMPT(voluntary) 
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xfa/0x120
 should_fail_ex+0x4d7/0x5e0
 should_failslab+0xc2/0x120
 kmem_cache_alloc_noprof+0x80/0x710
 getname_kernel+0x52/0x390
 kern_path+0x1f/0x80
 lookup_bdev+0xc6/0x270
 get_tree_bdev_flags+0xb8/0x620
 vfs_get_tree+0x93/0x340
 path_mount+0x726/0x2140
 __x64_sys_mount+0x293/0x310
 do_syscall_64+0xbf/0x420
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f720824704a
Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f72057bafa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f720824704a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f72057bb000
RBP: 00007f72057bb040 R08: 00007f72057bb040 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f72057bb000 R15: 0000000020012900
 </TASK>
EXT4-fs (loop6): unmounting filesystem 00000000-0000-0000-0000-000000000000.
/dev/loop5: Can't lookup blockdev
loop3: detected capacity change from 0 to 512
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 UID: 0 PID: 9708 Comm: syz-executor.3 Not tainted 6.18.0-rc7-next-20251128 #1 PREEMPT(voluntary) 
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xfa/0x120
 should_fail_ex+0x4d7/0x5e0
 should_failslab+0xc2/0x120
 kmem_cache_alloc_lru_noprof+0x84/0x720
 __d_alloc+0x34/0xa10
 d_alloc+0x4a/0x1e0
 lookup_one_qstr_excl+0x174/0x270
 filename_create+0x1c1/0x400
 do_mkdirat+0xa8/0x450
 __x64_sys_mkdir+0xf3/0x140
 do_syscall_64+0xbf/0x420
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2dac419c27
Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2da998ffa8 EFLAGS: 00000213 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f2dac419c27
RDX: 0000000000000004 RSI: 00000000000001ff RDI: 0000000020000100
RBP: 00007f2da9990040 R08: 0000000000000000 R09: ffffffffffffffff
R10: 0000000000000000 R11: 0000000000000213 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f2da9990000 R15: 0000000020012900
 </TASK>
loop3: detected capacity change from 0 to 512
EXT4-fs (loop3): ext4_check_descriptors: Inode bitmap for group 0 not in group (block 0)!
EXT4-fs (loop3): group descriptors corrupted!
loop6: detected capacity change from 0 to 512
EXT4-fs (loop6): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none.
loop5: detected capacity change from 0 to 512
EXT4-fs (loop6): unmounting filesystem 00000000-0000-0000-0000-000000000000.
EXT4-fs (loop5): ext4_check_descriptors: Inode table for group 0 not in group (block 0)!
EXT4-fs (loop5): group descriptors corrupted!
loop3: detected capacity change from 0 to 512
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 UID: 0 PID: 9735 Comm: syz-executor.3 Not tainted 6.18.0-rc7-next-20251128 #1 PREEMPT(voluntary) 
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xfa/0x120
 should_fail_ex+0x4d7/0x5e0
 should_failslab+0xc2/0x120
 kmem_cache_alloc_noprof+0x80/0x710
 getname_flags.part.0+0x48/0x540
 __x64_sys_mkdir+0xdb/0x140
 do_syscall_64+0xbf/0x420
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2dac419c27
Code: 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2da998ffa8 EFLAGS: 00000213 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007f2dac419c27
RDX: 0000000000000004 RSI: 00000000000001ff RDI: 0000000020000100
RBP: 00007f2da9990040 R08: 0000000000000000 R09: ffffffffffffffff
R10: 0000000000000000 R11: 0000000000000213 R12: 0000000020000000
R13: 0000000020000100 R14: 00007f2da9990000 R15: 0000000020012900
 </TASK>