loop5: detected capacity change from 0 to 155 SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 loop3: detected capacity change from 0 to 16383 ===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.0/5938 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.0/5938: #0: ffff88800fa583f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801bbb4698 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800fa5c950 (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: 5938 Comm: syz-executor.0 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: 0033:0x7fb410739427 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:00007ffe50c11078 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb410739427 RDX: ffffffffffffffbc RSI: 00007fb41079400e RDI: 00007fb4107931dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffe50c10af0 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffe50c11140 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.0/5938 Modules linked in: CPU: 0 UID: 0 PID: 5938 Comm: syz-executor.0 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:ffff88806ce08a10 EFLAGS: 00010086 RAX: 00000000ffffffff RBX: ffff88800a39d280 RCX: ffffffff81426596 RDX: 0000000000000000 RSI: ffffffff814265b1 RDI: ffff88800a39d67c RBP: ffff88800a39d280 R08: 0000000000000000 R09: ffffed100d9c6e28 R10: 0000000000000000 R11: 00000000000003f4 R12: ffff88800a39d280 R13: ffff88806ce363e8 R14: ffff88806ce371a0 R15: 0000000000000001 FS: 000055556dbb8400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001dc0 CR3: 000000001d2f6000 CR4: 0000000000350ef0 Call Trace: __queue_work+0x52b/0x1300 queue_work_on+0xd0/0xe0 tcp_wfree+0x3fa/0x4b0 skb_release_head_state+0x94/0x3b0 napi_consume_skb+0x327/0x4b0 e1000_unmap_and_free_tx_resource+0x144/0x200 e1000_clean+0x4b5/0x2540 __napi_poll+0xb7/0x6c0 net_rx_action+0x9cf/0xdb0 handle_softirqs+0x1b1/0x7d0 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_call_function_single+0xa6/0xc0 asm_sysvec_call_function_single+0x1a/0x20 RIP: 0010:__sanitizer_cov_trace_cmp8+0x0/0x20 Code: 0c 24 89 f2 89 fe bf 04 00 00 00 e9 da fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 0c 24 48 89 f2 48 89 fe bf 06 00 00 00 e9 a8 fe RSP: 0018:ffff888045d7f748 EFLAGS: 00000286 RAX: 0000000000000003 RBX: ffffffff866794c0 RCX: ffffffff84c54bdf RDX: 0000000000000000 RSI: ffffffff870253ac RDI: ffffffff815d742f RBP: ffffffff870253ac R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff870252c1 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:ffff888045d7f9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88800a39d280 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88800a39d67c RBP: ffff88800a39d280 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88800a39d280 R13: 0000000000000001 R14: ffffffff85c0fea0 R15: ffff888025b7c5d0 __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: 0033:0x7fb410739427 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:00007ffe50c11078 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb410739427 RDX: ffffffffffffffbc RSI: 00007fb41079400e RDI: 00007fb4107931dd RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffe50c10af0 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffe50c11140 irq event stamp: 679 hardirqs last enabled at (679): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (678): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (674): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (672): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- loop5: detected capacity change from 0 to 7 loop5: detected capacity change from 0 to 128 SELinux: security_context_str_to_sid (staff_u) failed with errno=-22 loop5: detected capacity change from 0 to 155 SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 tmpfs: Unsupported parameter 'huge' 9pnet_virtio: no channels available for device syz SELinux: security_context_str_to_sid (staff_u) failed with errno=-22 SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 SELinux: security_context_str_to_sid (staff_u) failed with errno=-22 set_capacity_and_notify: 3 callbacks suppressed loop5: detected capacity change from 0 to 7 loop5: detected capacity change from 0 to 128 SELinux: security_context_str_to_sid (staff_u) failed with errno=-22 loop5: detected capacity change from 0 to 155 tmpfs: Unsupported parameter 'huge' SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 tmpfs: Invalid gid '0x00000000ffffffff' 9pnet_virtio: no channels available for device syz loop2: detected capacity change from 0 to 264192 loop1: detected capacity change from 0 to 264192 nfs4: Unknown parameter ''' nfs4: Unknown parameter ''' loop4: detected capacity change from 0 to 264192 loop3: detected capacity change from 0 to 16383 nfs4: Unknown parameter ''' tmpfs: Invalid gid '0x00000000ffffffff' tmpfs: Unsupported parameter 'huge' 9pnet_virtio: no channels available for device syz loop5: detected capacity change from 0 to 7 loop5: detected capacity change from 0 to 128 SELinux: security_context_str_to_sid (staff_u) failed with errno=-22 loop5: detected capacity change from 0 to 155 SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 tmpfs: Invalid gid '0x00000000ffffffff' tmpfs: Unsupported parameter 'huge' SELinux: security_context_str_to_sid (staff_u) failed with errno=-22 SELinux: security_context_str_to_sid (sysadm_u) failed with errno=-22 SELinux: security_context_str_to_sid (staf) failed with errno=-22 ---------------- Code disassembly (best guess): 0: 0c 24 or $0x24,%al 2: 89 f2 mov %esi,%edx 4: 89 fe mov %edi,%esi 6: bf 04 00 00 00 mov $0x4,%edi b: e9 da fe ff ff jmpq 0xfffffeea 10: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) 17: 00 00 00 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 90 nop 24: 90 nop 25: 90 nop 26: 90 nop 27: 90 nop 28: 90 nop 29: 90 nop * 2a: f3 0f 1e fa endbr64 <-- trapping instruction 2e: 48 8b 0c 24 mov (%rsp),%rcx 32: 48 89 f2 mov %rsi,%rdx 35: 48 89 fe mov %rdi,%rsi 38: bf 06 00 00 00 mov $0x6,%edi 3d: e9 .byte 0xe9 3e: a8 fe test $0xfe,%al