===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.1/280 is trying to release lock (rcu_read_lock) at: [] __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.1/280: #0: ffff88800fd863f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801b50aa00 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800fe0a950 (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: 0 UID: 0 PID: 280 Comm: syz-executor.1 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: 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: 0033:0x7f22b084ac27 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:00007ffecb7cd678 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffecb7cd700 RCX: 00007f22b084ac27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffecb7cd700 RBP: 00007ffecb7cd6dc R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffecb7cd416 R11: 0000000000000206 R12: 0000000000000032 R13: 000000000004159f R14: 0000000000000003 R15: 00007ffecb7cd740 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.1/280 Modules linked in: CPU: 0 UID: 0 PID: 280 Comm: syz-executor.1 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:ffff8880199d79e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801aa71b80 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88801aa71f7c RBP: ffff88801aa71b80 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801aa71b80 R13: 0000000000000001 R14: ffffffff85c0cde0 R15: ffff888035476268 FS: 0000555579bda400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d72a000 CR3: 000000000dabd000 CR4: 0000000000350ef0 Call Trace: __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: 0033:0x7f22b084ac27 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:00007ffecb7cd678 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007ffecb7cd700 RCX: 00007f22b084ac27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffecb7cd700 RBP: 00007ffecb7cd6dc R08: 0000000000000000 R09: 0000000000000004 R10: 00007ffecb7cd416 R11: 0000000000000206 R12: 0000000000000032 R13: 000000000004159f R14: 0000000000000003 R15: 00007ffecb7cd740 irq event stamp: 342995 hardirqs last enabled at (342995): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (342994): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (342988): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (342986): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- audit: type=1326 audit(1768613312.725:21): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4699 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=298 compat=0 ip=0x7f46effc7b19 code=0x7ffc0000 audit: type=1326 audit(1768613312.751:22): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4699 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f46effc7b19 code=0x7ffc0000 audit: type=1326 audit(1768613312.763:23): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4699 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=257 compat=0 ip=0x7f46eff7aa04 code=0x7ffc0000 audit: type=1326 audit(1768613312.763:24): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4699 comm="syz-executor.0" exe="/syz-executor.0" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7f46effc7b19 code=0x7ffc0000 loop7: detected capacity change from 0 to 270 loop3: detected capacity change from 0 to 270 perf: interrupt took too long (3999 > 3996), lowering kernel.perf_event_max_sample_rate to 50000 perf: interrupt took too long (6343 > 6328), lowering kernel.perf_event_max_sample_rate to 31000 perf: interrupt took too long (7954 > 7928), lowering kernel.perf_event_max_sample_rate to 25000 perf: interrupt took too long (9986 > 9942), lowering kernel.perf_event_max_sample_rate to 20000 perf: interrupt took too long (12484 > 12482), lowering kernel.perf_event_max_sample_rate to 16000 loop7: detected capacity change from 0 to 270 loop3: detected capacity change from 0 to 270 loop3: detected capacity change from 0 to 270 loop7: detected capacity change from 0 to 270