===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260114 #1 Not tainted ------------------------------------- syz-executor.1/4495 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.1/4495: #0: ffff88800fe223f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801a0d3388 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800fe26950 (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: 4495 Comm: syz-executor.1 Not tainted 6.19.0-rc5-next-20260114 #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_symlink+0x623/0xb40 vfs_symlink+0x44b/0x840 do_symlinkat+0x153/0x440 __x64_sys_symlink+0x79/0xa0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc4545d3427 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 58 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:00007fffc3918328 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc4545d3427 RDX: 00007fffc3918407 RSI: 00007fc45462e019 RDI: 00007fffc39183f0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffc39181c0 R10: 00007fffc3918077 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007fffc39183f0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.1/4495 Modules linked in: CPU: 0 UID: 0 PID: 4495 Comm: syz-executor.1 Not tainted 6.19.0-rc5-next-20260114 #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 16 c0 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 24 74 03 e8 bc 5c 56 00 e9 RSP: 0018:ffff88804a4479a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801d4e9b80 RCX: ffffffff81565a27 RDX: 0000000000000000 RSI: ffffffff81565a30 RDI: ffff88801d4e9f7c RBP: ffff88801d4e9b80 R08: 0000000000000000 R09: fffffbfff0ba6ffc R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801d4e9b80 R13: 0000000000000001 R14: ffffffff85c111b0 R15: ffff88801a016bf0 FS: 000055557d319400(0000) GS:ffff8880e5343000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc454653541 CR3: 0000000049fff000 CR4: 0000000000350ef0 Call Trace: ------------[ cut here ]------------ WARNING: kernel/rcu/tree_exp.h:803 at rcu_exp_handler+0x12b/0x570, CPU#0: syz-executor.1/4495 Modules linked in: CPU: 0 UID: 0 PID: 4495 Comm: syz-executor.1 Not tainted 6.19.0-rc5-next-20260114 #1 PREEMPT(lazy) Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:rcu_exp_handler+0x12b/0x570 Code: 03 0f b6 04 02 4c 89 e2 83 e2 07 38 d0 7f 08 84 c0 0f 85 cb 03 00 00 0f b6 43 11 84 c0 75 b6 85 c9 74 1d 0f 8f bf 00 00 00 90 <0f> 0b 90 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f e9 6f ae 74 03 RSP: 0018:ffff88806ce08f50 EFLAGS: 00010086 RAX: 0000000000000000 RBX: ffff88806ce38800 RCX: 00000000ffffffff RDX: 0000000000000001 RSI: ffff88801d4e9b80 RDI: ffff88801d4e9f7c RBP: ffffffff85e310c0 R08: 0000000000000000 R09: fffffbfff0ccdc6a R10: 0000000000000001 R11: ffff88806ce08ff8 R12: ffff88806ce38811 R13: ffff88806ce38828 R14: ffffffff85e31138 R15: ffff88806ce38820 FS: 000055557d319400(0000) GS:ffff8880e5343000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc454653541 CR3: 0000000049fff000 CR4: 0000000000350ef0 Call Trace: __flush_smp_call_function_queue+0x47e/0xef0 __sysvec_call_function_single+0x6d/0x310 sysvec_call_function_single+0xa1/0xc0 asm_sysvec_call_function_single+0x1a/0x20 RIP: 0010:write_comp_data+0x17/0xa0 Code: 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 49 89 d2 65 8b 05 36 5b 38 06 65 48 8b 15 16 5b 38 06 a9 00 01 ff 00 <74> 27 f6 c4 01 74 1d a9 00 00 0f 00 75 16 a9 00 00 f0 00 74 05 e9 RSP: 0018:ffff88804a447318 EFLAGS: 00000246 RAX: 0000000000000004 RBX: ffffffff8667f210 RCX: ffffffff84c51bdf RDX: ffff88801d4e9b80 RSI: ffffffff815d6d6f RDI: 0000000000000006 RBP: ffffffff84d03400 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff84d03400 R11: 0000000000000000 R12: ffffffff815d6d6f R13: dffffc0000000000 R14: 0000000000000002 R15: 000000000000000b __report_bug+0x4cf/0x5b0 report_bug+0x7c/0x120 handle_bug+0x2e8/0x4f0 exc_invalid_op+0x35/0x80 asm_exc_invalid_op+0x1a/0x20 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 16 c0 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 24 74 03 e8 bc 5c 56 00 e9 RSP: 0018:ffff88804a447578 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801d4e9b80 RCX: 0000000000000005 RDX: 0000000000000000 RSI: ffffffff85e25d80 RDI: ffff88801d4e9f7c RBP: ffff88801d4e9b80 R08: 0000000000000001 R09: ffffffff84e98ac0 R10: 000000000003d1db R11: 0000000000011950 R12: ffff88801d4e9b80 R13: ffff88804a4476a8 R14: ffff88804a4479a8 R15: ffff88804a447660 unwind_next_frame+0x3bc/0x2540 __show_trace_log_lvl+0x2de/0x380 __warn+0xfc/0x370 __report_bug+0x421/0x5b0 report_bug+0x7c/0x120 handle_bug+0x2e8/0x4f0 exc_invalid_op+0x35/0x80 asm_exc_invalid_op+0x1a/0x20 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 16 c0 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 24 74 03 e8 bc 5c 56 00 e9 RSP: 0018:ffff88804a4479a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801d4e9b80 RCX: ffffffff81565a27 RDX: 0000000000000000 RSI: ffffffff81565a30 RDI: ffff88801d4e9f7c RBP: ffff88801d4e9b80 R08: 0000000000000000 R09: fffffbfff0ba6ffc R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801d4e9b80 R13: 0000000000000001 R14: ffffffff85c111b0 R15: ffff88801a016bf0 __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_symlink+0x623/0xb40 vfs_symlink+0x44b/0x840 do_symlinkat+0x153/0x440 __x64_sys_symlink+0x79/0xa0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc4545d3427 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 58 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:00007fffc3918328 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc4545d3427 RDX: 00007fffc3918407 RSI: 00007fc45462e019 RDI: 00007fffc39183f0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffc39181c0 R10: 00007fffc3918077 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007fffc39183f0 irq event stamp: 1199 hardirqs last enabled at (1199): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (1198): [] sysvec_call_function_single+0x18/0xc0 softirqs last enabled at (1192): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (1190): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_symlink+0x623/0xb40 vfs_symlink+0x44b/0x840 do_symlinkat+0x153/0x440 __x64_sys_symlink+0x79/0xa0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc4545d3427 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 58 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:00007fffc3918328 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc4545d3427 RDX: 00007fffc3918407 RSI: 00007fc45462e019 RDI: 00007fffc39183f0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffc39181c0 R10: 00007fffc3918077 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007fffc39183f0 irq event stamp: 1199 hardirqs last enabled at (1199): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (1198): [] sysvec_call_function_single+0x18/0xc0 softirqs last enabled at (1192): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (1190): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- Bluetooth: hci0: unexpected event for opcode 0x2029 Bluetooth: hci0: ACL packet for unknown connection handle 2745 Bluetooth: hci0: unexpected event 0x2f length: 763 > 260 Bluetooth: hci0: ISO packet for unknown connection handle 1106 Bluetooth: hci0: ACL packet for unknown connection handle 200 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 90 90 90 90 90 add %dl,-0x6f6f6f70(%rax) 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 49 89 d2 mov %rdx,%r10 16: 65 8b 05 36 5b 38 06 mov %gs:0x6385b36(%rip),%eax # 0x6385b53 1d: 65 48 8b 15 16 5b 38 mov %gs:0x6385b16(%rip),%rdx # 0x6385b3b 24: 06 25: a9 00 01 ff 00 test $0xff0100,%eax * 2a: 74 27 je 0x53 <-- trapping instruction 2c: f6 c4 01 test $0x1,%ah 2f: 74 1d je 0x4e 31: a9 00 00 0f 00 test $0xf0000,%eax 36: 75 16 jne 0x4e 38: a9 00 00 f0 00 test $0xf00000,%eax 3d: 74 05 je 0x44 3f: e9 .byte 0xe9