===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.6/4977 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.6/4977: #0: ffff88800f94e3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801bcfa078 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800fb5a950 (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: 4977 Comm: syz-executor.6 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_symlink+0x623/0xb40 vfs_symlink+0x44b/0x840 filename_symlinkat+0x158/0x440 __x64_sys_symlink+0x82/0x110 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6569a35427 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:00007ffd35f85e88 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6569a35427 RDX: 00007ffd35f85f63 RSI: 00007f6569a90022 RDI: 00007ffd35f85f50 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd35f85d20 R10: 00007ffd35f85bd7 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffd35f85f50 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.6/4977 Modules linked in: CPU: 1 UID: 0 PID: 4977 Comm: syz-executor.6 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:ffff88806cf08cb8 EFLAGS: 00010086 RAX: 00000000ffffffff RBX: ffff88800f213700 RCX: 0000000000000005 RDX: 0000000000000000 RSI: ffffffff85e25fc0 RDI: ffff88800f213afc RBP: ffff88800f213700 R08: 0000000000000000 R09: ffffffff84e98ac0 R10: 0000000000000000 R11: 0000000000000194 R12: ffff88800f213700 R13: 0000000000000001 R14: ffff88806cf379c0 R15: ffff88806cf37a20 FS: 0000555556d34400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556d34708 CR3: 000000004968f000 CR4: 0000000000350ef0 Call Trace: sched_tick+0x232/0x6e0 update_process_times+0x116/0x210 tick_nohz_handler+0x4ff/0x8c0 __hrtimer_run_queues+0x654/0xbb0 hrtimer_interrupt+0x369/0x830 __sysvec_apic_timer_interrupt+0xbb/0x300 sysvec_apic_timer_interrupt+0x6b/0x80 asm_sysvec_apic_timer_interrupt+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 76 64 38 06 65 48 8b 15 56 64 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:ffff888013fe7748 EFLAGS: 00000246 RAX: 0000000000000002 RBX: ffffffff8667eeb0 RCX: ffffffff84c54bdf RDX: ffff88800f213700 RSI: ffffffff815d742f RDI: 0000000000000006 RBP: ffffffff814fb60f R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff814fb60f R11: 0000000000000000 R12: ffffffff815d742f 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 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:ffff888013fe79a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88800f213700 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88800f213afc RBP: ffff88800f213700 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88800f213700 R13: 0000000000000001 R14: ffffffff85c0ee10 R15: ffff88803f9e32c0 __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_symlink+0x623/0xb40 vfs_symlink+0x44b/0x840 filename_symlinkat+0x158/0x440 __x64_sys_symlink+0x82/0x110 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6569a35427 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:00007ffd35f85e88 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f6569a35427 RDX: 00007ffd35f85f63 RSI: 00007f6569a90022 RDI: 00007ffd35f85f50 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd35f85d20 R10: 00007ffd35f85bd7 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffd35f85f50 irq event stamp: 445 hardirqs last enabled at (445): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (444): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (440): [] do_softirq+0x48/0x80 softirqs last disabled at (315): [] do_softirq+0x48/0x80 ---[ end trace 0000000000000000 ]--- sr 1:0:0:0: [sr0] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK cmd_age=0s sr 1:0:0:0: [sr0] tag#0 Sense Key : Illegal Request [current] sr 1:0:0:0: [sr0] tag#0 Add. Sense: Invalid command operation code sr 1:0:0:0: [sr0] tag#0 CDB: Write(10) 2a 00 00 00 00 00 00 00 20 00 critical target error, dev sr0, sector 0 op 0x1:(WRITE) flags 0x8800 phys_seg 16 prio class 2 audit: type=1400 audit(1768808606.541:14): avc: denied { ingress } for pid=248 comm="sshd" saddr=10.0.2.2 src=48410 daddr=10.0.2.15 dest=22 netif=eth0 scontext=system_u:object_r:sshd_exec_t:s0 tcontext=system_u:object_r:netif_t:s0 tclass=netif permissive=1 audit: type=1400 audit(1768808606.541:15): avc: denied { recvfrom } for pid=248 comm="sshd" saddr=10.0.2.2 src=48410 daddr=10.0.2.15 dest=22 netif=eth0 scontext=system_u:object_r:sshd_exec_t:s0 tcontext=system_u:object_r:node_t:s0 tclass=node permissive=1 audit: type=1400 audit(1768808606.542:16): avc: denied { recv } for pid=248 comm="sshd" saddr=10.0.2.2 src=48410 daddr=10.0.2.15 dest=22 netif=eth0 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:sshd_exec_t:s0 tclass=peer permissive=1 ---------------- 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 76 64 38 06 mov %gs:0x6386476(%rip),%eax # 0x6386493 1d: 65 48 8b 15 56 64 38 mov %gs:0x6386456(%rip),%rdx # 0x638647b 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