===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.5/4358 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.5/4358: #0: ffff88800f8163f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff8880095996f0 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f822950 (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: 4358 Comm: syz-executor.5 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: 0033:0x7f1a0ffb9427 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:00007fffaadf26d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1a0ffb9427 RDX: 00007fffaadf27b3 RSI: 00007f1a10014022 RDI: 00007fffaadf27a0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffaadf2570 R10: 00007fffaadf2427 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007fffaadf27a0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.5/4358 Modules linked in: CPU: 0 UID: 0 PID: 4358 Comm: syz-executor.5 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:ffff88806ce08c10 EFLAGS: 00010086 RAX: 00000000ffffffff RBX: ffff88801a9ad280 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8149c08f RDI: ffff88801a9ad67c RBP: ffff88801a9ad280 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff8666e857 R11: ffff88801aa09be8 R12: ffff88801a9ad280 R13: 0000000000000008 R14: 0000000000000000 R15: ffff88801aa09b80 FS: 0000555594763400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555594763708 CR3: 00000000163d7000 CR4: 0000000000350ef0 Call Trace: select_task_rq_fair+0x489/0x3d40 try_to_wake_up+0x51b/0x1680 hrtimer_wakeup+0x47/0x60 __hrtimer_run_queues+0x1ee/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:__report_bug+0x4a9/0x5b0 Code: 79 67 86 48 89 de e8 56 31 b0 fc 49 39 dc 48 c7 c3 c0 79 67 86 75 3e eb 5e e8 b3 36 b0 fc 48 89 d8 48 c1 e8 03 42 0f b6 14 28 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b0 00 00 00 48 RSP: 0018:ffff88804bcdf750 EFLAGS: 00000216 RAX: 1ffffffff0cd02a6 RBX: ffffffff86681530 RCX: ffffffff84c54bdf RDX: 0000000000000000 RSI: ffffffff84c54bad RDI: 0000000000000006 RBP: ffffffff8153c7ba R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff8153c7ba R11: 0000000000000000 R12: ffffffff815d742f R13: dffffc0000000000 R14: 0000000000000002 R15: 000000000000000b 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:ffff88804bcdf9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801a9ad280 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88801a9ad67c RBP: ffff88801a9ad280 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801a9ad280 R13: 0000000000000001 R14: ffffffff85c10df0 R15: ffff8880095858e0 __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: 0033:0x7f1a0ffb9427 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:00007fffaadf26d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1a0ffb9427 RDX: 00007fffaadf27b3 RSI: 00007f1a10014022 RDI: 00007fffaadf27a0 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffaadf2570 R10: 00007fffaadf2427 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007fffaadf27a0 irq event stamp: 949 hardirqs last enabled at (949): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (948): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (942): [] do_softirq+0x48/0x80 softirqs last disabled at (729): [] do_softirq+0x48/0x80 ---[ end trace 0000000000000000 ]--- netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. netlink: 8 bytes leftover after parsing attributes in process `syz-executor.6'. faux_driver regulatory: Direct firmware load for regulatory.db failed with error -2 tmpfs: Unknown parameter '18446744073709551615٪nXq:*sй%d&HMXJ3L蒎e iYu|;5Tk/FA18446744073709551615' tmpfs: Unknown parameter '18446744073709551615٪nXq:*sй%d&HMXJ3L蒎e iYu|;5Tk/FA18446744073709551615' loop2: detected capacity change from 0 to 2048 EXT4-fs error (device loop2): ext4_quota_enable:7179: comm syz-executor.2: Bad quota inum: 8, type: 0 EXT4-fs warning (device loop2): ext4_enable_quotas:7224: Failed to enable quota tracking (type=0, err=-117, ino=8). Please run e2fsck to fix. EXT4-fs (loop2): mount failed loop2: detected capacity change from 0 to 2048 EXT4-fs error (device loop2): ext4_quota_enable:7179: comm syz-executor.2: Bad quota inum: 8, type: 0 EXT4-fs warning (device loop2): ext4_enable_quotas:7224: Failed to enable quota tracking (type=0, err=-117, ino=8). Please run e2fsck to fix. EXT4-fs (loop2): mount failed loop1: detected capacity change from 0 to 4096 loop2: detected capacity change from 0 to 2048 EXT4-fs error (device loop2): ext4_quota_enable:7179: comm syz-executor.2: Bad quota inum: 8, type: 0 EXT4-fs (loop1): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback. EXT4-fs warning (device loop2): ext4_enable_quotas:7224: Failed to enable quota tracking (type=0, err=-117, ino=8). Please run e2fsck to fix. EXT4-fs (loop2): mount failed EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000. ---------------- Code disassembly (best guess): 0: 79 67 jns 0x69 2: 86 48 89 xchg %cl,-0x77(%rax) 5: de e8 fsubrp %st,%st(0) 7: 56 push %rsi 8: 31 b0 fc 49 39 dc xor %esi,-0x23c6b604(%rax) e: 48 c7 c3 c0 79 67 86 mov $0xffffffff866779c0,%rbx 15: 75 3e jne 0x55 17: eb 5e jmp 0x77 19: e8 b3 36 b0 fc callq 0xfcb036d1 1e: 48 89 d8 mov %rbx,%rax 21: 48 c1 e8 03 shr $0x3,%rax 25: 42 0f b6 14 28 movzbl (%rax,%r13,1),%edx * 2a: 48 89 d8 mov %rbx,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 d0 cmp %dl,%al 35: 7c 08 jl 0x3f 37: 84 d2 test %dl,%dl 39: 0f 85 b0 00 00 00 jne 0xef 3f: 48 rex.W