===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.4/3977 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.4/3977: #0: ffff88800f7423f8 (sb_writers#3){.+.+}-{0:0}, at: path_openat+0x1764/0x2d60 #1: ffff888017fee330 (&type->i_mutex_dir_key#3){++++}-{4:4}, at: path_openat+0xe32/0x2d60 #2: ffff88800f746950 (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: 3977 Comm: syz-executor.4 Not tainted 6.19.0-rc5-next-20260113 #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_create+0x2e2/0x4e0 lookup_open.isra.0+0xc03/0x1030 path_openat+0xea4/0x2d60 do_file_open+0x209/0x460 do_sys_openat2+0xe7/0x210 __x64_sys_openat+0x142/0x200 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd41d5a4b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007fd41ab1a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fd41d6b7f60 RCX: 00007fd41d5a4b19 RDX: 00000000000e2142 RSI: 00000000200019c0 RDI: ffffffffffffff9c RBP: 00007fd41d5fef6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000164 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd2e1d9f6f R14: 00007fd41ab1a300 R15: 0000000000022000 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.4/3977 Modules linked in: CPU: 1 UID: 0 PID: 3977 Comm: syz-executor.4 Not tainted 6.19.0-rc5-next-20260113 #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 a6 bb de ff 4d 85 f6 0f 84 73 fe ff ff e8 38 89 20 00 fb e9 68 fe ff ff 90 <0f> 0b 90 5b 5d 41 5c 41 5d 41 5e e9 61 f9 73 03 e8 0c 88 56 00 e9 RSP: 0018:ffff888045def4f8 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801792d280 RCX: ffffc9000219e000 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff88801792d67c RBP: ffff88801792d280 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801792d280 R13: 0000000000000001 R14: ffffffff85c0cbb0 R15: ffff888027c4d8e0 FS: 00007fd41ab1a700(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ce27000 CR3: 0000000041250000 CR4: 0000000000350ef0 Call Trace: __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_create+0x2e2/0x4e0 lookup_open.isra.0+0xc03/0x1030 path_openat+0xea4/0x2d60 do_file_open+0x209/0x460 do_sys_openat2+0xe7/0x210 __x64_sys_openat+0x142/0x200 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fd41d5a4b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007fd41ab1a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fd41d6b7f60 RCX: 00007fd41d5a4b19 RDX: 00000000000e2142 RSI: 00000000200019c0 RDI: ffffffffffffff9c RBP: 00007fd41d5fef6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000164 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd2e1d9f6f R14: 00007fd41ab1a300 R15: 0000000000022000 irq event stamp: 983 hardirqs last enabled at (983): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (982): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (976): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (974): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- msdos: Unknown parameter 'hash' SELinux: security_context_str_to_sid (root) failed with errno=-22 nfs4: Unknown parameter '[' nfs: Unknown parameter 'grpid' SELinux: security_context_str_to_sid (staff_u) failed with errno=-22 nfs: Unknown parameter ')' Bluetooth: hci0: Opcode 0x0c1a failed: -4 Bluetooth: hci1: Opcode 0x0c1a failed: -4 Bluetooth: hci2: Opcode 0x0c1a failed: -4 Bluetooth: hci3: Opcode 0x0c1a failed: -4 Bluetooth: hci4: Opcode 0x0c1a failed: -4 Bluetooth: hci6: Opcode 0x0c1a failed: -4 Bluetooth: hci5: Opcode 0x0c1a failed: -4 Bluetooth: hci7: Opcode 0x0c1a failed: -4 Bluetooth: hci0: command 0x0c1a tx timeout Bluetooth: hci7: command 0x0c1a tx timeout Bluetooth: hci5: command 0x0c1a tx timeout Bluetooth: hci6: command 0x0c1a tx timeout Bluetooth: hci4: command 0x0c1a tx timeout Bluetooth: hci3: command 0x0c1a tx timeout Bluetooth: hci2: command 0x0c1a tx timeout Bluetooth: hci1: command 0x0c1a tx timeout set_capacity_and_notify: 9 callbacks suppressed loop4: detected capacity change from 0 to 8 loop7: detected capacity change from 0 to 264192 msdos: Unknown parameter 'hash' loop7: detected capacity change from 0 to 264192 loop4: detected capacity change from 0 to 24 SELinux: security_context_str_to_sid (staff_u) failed with errno=-22 loop7: detected capacity change from 0 to 10 SELinux: security_context_str_to_sid (user_u) failed with errno=-22 loop1: detected capacity change from 0 to 16383 SELinux: security_context_str_to_sid (root) failed with errno=-22 loop2: detected capacity change from 0 to 264192 loop6: detected capacity change from 0 to 264192 nfs: Unknown parameter 'grpid' loop1: detected capacity change from 0 to 8 loop0: detected capacity change from 0 to 50 nfs: Unknown parameter ')' nfs4: Unknown parameter '[' nfs: Unknown parameter 'grpid' nfs: Unknown parameter ')' SELinux: security_context_str_to_sid (root) failed with errno=-22 Bluetooth: hci0: Opcode 0x0c1a failed: -4 Bluetooth: hci1: Opcode 0x0c1a failed: -4 Bluetooth: hci2: Opcode 0x0c1a failed: -4 Bluetooth: hci3: Opcode 0x0c1a failed: -4 Bluetooth: hci4: Opcode 0x0c1a failed: -4 Bluetooth: hci6: Opcode 0x0c1a failed: -4 Bluetooth: hci5: Opcode 0x0c1a failed: -4 Bluetooth: hci7: Opcode 0x0c1a failed: -4 Bluetooth: hci0: command 0x0c1a tx timeout