sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
=====================================
WARNING: bad unlock balance detected!
6.19.0-rc5-next-20260116 #1 Not tainted
-------------------------------------
syz-executor.4/4623 is trying to release lock (rcu_read_lock) at:
[<ffffffff81c1dee5>] __wait_on_freeing_inode+0x105/0x350
but there are no more locks to release!

other info that might help us debug this:
4 locks held by syz-executor.4/4623:
 #0: ffff88800fc743f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400
 #1: ffff88801e91d9a8 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400
 #2: ffff88800fc88950 (jbd2_handle){++++}-{0:0}, at: start_this_handle+0xe32/0x12d0
 #3: ffffffff85c16898 (inode_hash_lock){+.+.}-{3:3}, at: insert_inode_locked+0xf9/0x890

stack backtrace:
CPU: 1 UID: 0 PID: 4623 Comm: syz-executor.4 Not tainted 6.19.0-rc5-next-20260116 #1 PREEMPT(lazy) 
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xca/0x120
 print_unlock_imbalance_bug+0x118/0x130
 lock_release+0x1ee/0x270
 __wait_on_freeing_inode+0x10a/0x350
 insert_inode_locked+0x25f/0x890
 __ext4_new_inode+0x223d/0x4cd0
 ext4_mkdir+0x331/0xb30
 vfs_mkdir+0x6d8/0xc00
 filename_mkdirat+0x118/0x430
 __x64_sys_mkdir+0x6e/0xd0
 do_syscall_64+0xbf/0x420
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6ceb509c27
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:00007ffd2fc09be8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007ffd2fc09c70 RCX: 00007f6ceb509c27
RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffd2fc09c70
RBP: 00007ffd2fc09c4c R08: 0000000000000000 R09: 0000000000000004
R10: 00007ffd2fc09986 R11: 0000000000000206 R12: 0000000000000032
R13: 000000000004dff9 R14: 0000000000000002 R15: 00007ffd2fc09cb0
 </TASK>
------------[ cut here ]------------
WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.4/4623
Modules linked in:
CPU: 1 UID: 0 PID: 4623 Comm: syz-executor.4 Not tainted 6.19.0-rc5-next-20260116 #1 PREEMPT(lazy) 
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:__rcu_read_unlock+0x25f/0x5c0
Code: f2 02 00 00 c7 43 58 01 00 00 00 bf 09 00 00 00 e8 d6 b7 de ff 4d 85 f6 0f 84 73 fe ff ff e8 38 8a 20 00 fb e9 68 fe ff ff 90 <0f> 0b 90 5b 5d 41 5c 41 5d 41 5e e9 81 4d 74 03 e8 2c 5d 56 00 e9
RSP: 0018:ffff88804b7b79e0 EFLAGS: 00010286
RAX: 00000000ffffffff RBX: ffff88801dc3b700 RCX: ffffffff815660f7
RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88801dc3bafc
RBP: ffff88801dc3b700 R08: 0000000000000000 R09: fffffbfff0ba7040
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801dc3b700
R13: 0000000000000001 R14: ffffffff85c10b70 R15: ffff88801aaab2c0
FS:  000055556eaaa400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbeea482000 CR3: 000000001e425000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 __wait_on_freeing_inode+0x10f/0x350
 insert_inode_locked+0x25f/0x890
 __ext4_new_inode+0x223d/0x4cd0
 ext4_mkdir+0x331/0xb30
 vfs_mkdir+0x6d8/0xc00
 filename_mkdirat+0x118/0x430
 __x64_sys_mkdir+0x6e/0xd0
 do_syscall_64+0xbf/0x420
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6ceb509c27
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:00007ffd2fc09be8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007ffd2fc09c70 RCX: 00007f6ceb509c27
RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffd2fc09c70
RBP: 00007ffd2fc09c4c R08: 0000000000000000 R09: 0000000000000004
R10: 00007ffd2fc09986 R11: 0000000000000206 R12: 0000000000000032
R13: 000000000004dff9 R14: 0000000000000002 R15: 00007ffd2fc09cb0
 </TASK>
irq event stamp: 271147
hardirqs last  enabled at (271147): [<ffffffff84ced36b>] irqentry_exit+0x17b/0x650
hardirqs last disabled at (271146): [<ffffffff84cec06f>] sysvec_apic_timer_interrupt+0xf/0x80
softirqs last  enabled at (271140): [<ffffffff812cda79>] kernel_fpu_end+0x59/0x70
softirqs last disabled at (271138): [<ffffffff812ce94b>] kernel_fpu_begin_mask+0x1bb/0x300
---[ end trace 0000000000000000 ]---
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
sr 1:0:0:0: [sr0] tag#0 unaligned transfer
tmpfs: Unknown parameter '�ؘ����H��v�9���^��#�j$]��*����	Ƥ��IC�*���f(�&���}h(e�K������FE<sP�Y�<&�}����.;\
 '[(���R�/KS�'
loop7: detected capacity change from 0 to 2048
ext4: Unknown parameter '@Lz/�v���֊��Y�.�d�\V�ax'
loop7: detected capacity change from 0 to 2048
tmpfs: Unknown parameter '�ؘ����H��v�9���^��#�j$]��*����	Ƥ��IC�*���f(�&���}h(e�K������FE<sP�Y�<&�}����.;\
 '[(���R�/KS�'
ext4: Unknown parameter '@Lz/�v���֊��Y�.�d�\V�ax'
audit: type=1400 audit(1768673362.620:15): avc:  denied  { setattr } for  pid=5668 comm="syz-executor.7" path="/proc/5668/task/5669/clear_refs" dev="proc" ino=8963 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=file permissive=1
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 UID: 0 PID: 5673 Comm: syz-executor.4 Tainted: G        W           6.19.0-rc5-next-20260116 #1 PREEMPT(lazy) 
Tainted: [W]=WARN
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
 __kmalloc_noprof+0xd6/0x830
 process_preds+0x670/0x1b40
 create_filter+0x135/0x220
 ftrace_profile_set_filter+0xf7/0x250
 _perf_ioctl+0xdc3/0x21f0
 perf_ioctl+0x74/0xb0
 __x64_sys_ioctl+0x18f/0x210
 do_syscall_64+0xbf/0x420
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6ceb50ab19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6ce8a80188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6ceb61df60 RCX: 00007f6ceb50ab19
RDX: 0000000020000180 RSI: 0000000040082406 RDI: 0000000000000003
RBP: 00007f6ce8a801d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffd2fc0999f R14: 00007f6ce8a80300 R15: 0000000000022000
 </TASK>
loop5: detected capacity change from 0 to 33280
EXT4-fs error (device loop5): __ext4_fill_super:5560: inode #2: comm syz-executor.5: iget: special inode unallocated
EXT4-fs (loop5): get root inode failed
EXT4-fs (loop5): mount failed
loop5: detected capacity change from 0 to 33280
EXT4-fs error (device loop5): __ext4_fill_super:5560: inode #2: comm syz-executor.5: iget: special inode unallocated
EXT4-fs (loop5): get root inode failed
EXT4-fs (loop5): mount failed