===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.7/4090 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.7/4090: #0: ffff88800fde43f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff8880096416f0 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800fdf0950 (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: 4090 Comm: syz-executor.7 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_symlink+0x406/0xb40 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: 0033:0x7f3b4827f427 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:00007ffd7fd10138 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3b4827f427 RDX: 00007ffd7fd10213 RSI: 00007f3b482da02f RDI: 00007ffd7fd10200 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd7fd0ffd0 R10: 00007ffd7fd0fe87 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd7fd10200 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.7/4090 Modules linked in: CPU: 1 UID: 0 PID: 4090 Comm: syz-executor.7 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:ffff88804f2679a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888018e78000 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff888018e783fc RBP: ffff888018e78000 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888018e78000 R13: 0000000000000001 R14: ffffffff85c0f860 R15: ffff88801f226bf0 FS: 0000555586659400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555586659708 CR3: 0000000045eb5000 CR4: 0000000000350ef0 Call Trace: __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_symlink+0x406/0xb40 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: 0033:0x7f3b4827f427 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:00007ffd7fd10138 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3b4827f427 RDX: 00007ffd7fd10213 RSI: 00007f3b482da02f RDI: 00007ffd7fd10200 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd7fd0ffd0 R10: 00007ffd7fd0fe87 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffd7fd10200 irq event stamp: 409 hardirqs last enabled at (409): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (408): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (404): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (402): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- netlink: 124 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 124 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 124 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 124 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 124 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 124 bytes leftover after parsing attributes in process `syz-executor.6'. netlink: 124 bytes leftover after parsing attributes in process `syz-executor.5'. netlink: 124 bytes leftover after parsing attributes in process `syz-executor.6'. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. Bluetooth: hci7: Unexpected cc 0xdc53 with no status Bluetooth: hci7: ACL packet for unknown connection handle 2745 Bluetooth: hci7: unexpected event 0x2f length: 763 > 260 Bluetooth: hci7: ISO packet for unknown connection handle 1106 Bluetooth: hci7: Unexpected cc 0xdc53 with no status Bluetooth: hci7: ACL packet for unknown connection handle 2745 Bluetooth: hci7: unexpected event 0x2f length: 763 > 260 Bluetooth: hci7: ISO packet for unknown connection handle 1106 Bluetooth: hci7: Unexpected cc 0xdc53 with no status Bluetooth: hci7: ACL packet for unknown connection handle 2745 Bluetooth: hci7: unexpected event 0x2f length: 763 > 260 Bluetooth: hci7: ISO packet for unknown connection handle 1106 EXT4-fs (sda): re-mounted 7b5d9a40-9011-49ec-8035-27953f97a4d8. Bluetooth: hci1: Unexpected cc 0xdc53 with no status Bluetooth: hci1: ACL packet for unknown connection handle 2745 Bluetooth: hci1: unexpected event 0x2f length: 763 > 260 Bluetooth: hci1: ISO packet for unknown connection handle 1106 Bluetooth: hci6: Unexpected cc 0xdc53 with no status Bluetooth: hci6: ACL packet for unknown connection handle 2745 Bluetooth: hci6: unexpected event 0x2f length: 763 > 260 Bluetooth: hci6: ISO packet for unknown connection handle 1106 Bluetooth: hci7: Unexpected cc 0xdc53 with no status Bluetooth: hci7: ACL packet for unknown connection handle 2745 Bluetooth: hci7: unexpected event 0x2f length: 763 > 260 Bluetooth: hci3: Unexpected cc 0xdc53 with no status Bluetooth: hci5: Unexpected cc 0xdc53 with no status Bluetooth: hci7: ISO packet for unknown connection handle 1106 Bluetooth: hci3: ACL packet for unknown connection handle 2745 Bluetooth: hci5: ACL packet for unknown connection handle 2745 Bluetooth: hci3: unexpected event 0x2f length: 763 > 260 Bluetooth: hci3: ISO packet for unknown connection handle 1106 Bluetooth: hci5: unexpected event 0x2f length: 763 > 260 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci1: Unexpected cc 0xdc53 with no status Bluetooth: hci1: ACL packet for unknown connection handle 2745 Bluetooth: hci1: unexpected event 0x2f length: 763 > 260 Bluetooth: hci1: ISO packet for unknown connection handle 1106 Bluetooth: hci2: Unexpected cc 0xdc53 with no status Bluetooth: hci2: ACL packet for unknown connection handle 2745 Bluetooth: hci2: unexpected event 0x2f length: 763 > 260 Bluetooth: hci2: ISO packet for unknown connection handle 1106 Bluetooth: hci4: Unexpected cc 0xdc53 with no status Bluetooth: hci4: ACL packet for unknown connection handle 2745 Bluetooth: hci4: ISO packet for unknown connection handle 1106 Bluetooth: hci0: Unexpected cc 0xdc53 with no status Bluetooth: hci0: ACL packet for unknown connection handle 2745 Bluetooth: hci0: ISO packet for unknown connection handle 1106 Bluetooth: hci6: Unexpected cc 0xdc53 with no status Bluetooth: hci6: ACL packet for unknown connection handle 2745 Bluetooth: hci6: ISO packet for unknown connection handle 1106 Bluetooth: hci3: Unexpected cc 0xdc53 with no status Bluetooth: hci3: ACL packet for unknown connection handle 2745 Bluetooth: hci3: ISO packet for unknown connection handle 1106 Bluetooth: hci5: Unexpected cc 0xdc53 with no status Bluetooth: hci5: ACL packet for unknown connection handle 2745 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci7: Unexpected cc 0xdc53 with no status Bluetooth: hci7: ACL packet for unknown connection handle 2745 Bluetooth: hci7: ISO packet for unknown connection handle 1106 Bluetooth: hci1: Unexpected cc 0xdc53 with no status Bluetooth: hci1: ACL packet for unknown connection handle 2745 Bluetooth: hci1: ISO packet for unknown connection handle 1106 Bluetooth: hci0: Unexpected cc 0xdc53 with no status Bluetooth: hci0: ACL packet for unknown connection handle 2745 Bluetooth: hci0: ISO packet for unknown connection handle 1106 Bluetooth: hci2: Unexpected cc 0xdc53 with no status Bluetooth: hci2: ACL packet for unknown connection handle 2745 Bluetooth: hci2: ISO packet for unknown connection handle 1106 Bluetooth: hci4: Unexpected cc 0xdc53 with no status Bluetooth: hci4: ACL packet for unknown connection handle 2745 Bluetooth: hci4: ISO packet for unknown connection handle 1106 Bluetooth: hci5: Unexpected cc 0xdc53 with no status Bluetooth: hci5: ACL packet for unknown connection handle 2745 Bluetooth: hci0: Unexpected cc 0xdc53 with no status Bluetooth: hci3: Unexpected cc 0xdc53 with no status Bluetooth: hci0: ACL packet for unknown connection handle 2745 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci0: ISO packet for unknown connection handle 1106 Bluetooth: hci3: ACL packet for unknown connection handle 2745 Bluetooth: hci3: ISO packet for unknown connection handle 1106 Bluetooth: hci6: Unexpected cc 0xdc53 with no status Bluetooth: hci6: ACL packet for unknown connection handle 2745 Bluetooth: hci6: ISO packet for unknown connection handle 1106 Bluetooth: hci2: Unexpected cc 0xdc53 with no status Bluetooth: hci2: ACL packet for unknown connection handle 2745 Bluetooth: hci2: ISO packet for unknown connection handle 1106 Bluetooth: hci4: Unexpected cc 0xdc53 with no status Bluetooth: hci4: ACL packet for unknown connection handle 2745 Bluetooth: hci4: ISO packet for unknown connection handle 1106 loop6: detected capacity change from 0 to 131078 loop6: detected capacity change from 0 to 131078 loop4: detected capacity change from 0 to 131078 loop6: detected capacity change from 0 to 131078 loop4: detected capacity change from 0 to 131078 loop6: detected capacity change from 0 to 131078 mmap: syz-executor.3 (4661) uses deprecated remap_file_pages() syscall. See Documentation/mm/remap_file_pages.rst. loop4: detected capacity change from 0 to 131078 Bluetooth: hci7: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci7: Injecting HCI hardware error event Bluetooth: hci7: hardware error 0x00 Bluetooth: hci1: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci1: Injecting HCI hardware error event Bluetooth: hci1: hardware error 0x00 Bluetooth: hci5: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci5: Injecting HCI hardware error event Bluetooth: hci6: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci6: Injecting HCI hardware error event Bluetooth: hci3: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci6: hardware error 0x00 Bluetooth: hci3: Injecting HCI hardware error event Bluetooth: hci5: hardware error 0x00 Bluetooth: hci3: hardware error 0x00 Bluetooth: hci4: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci4: Injecting HCI hardware error event Bluetooth: hci2: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci2: Injecting HCI hardware error event Bluetooth: hci4: hardware error 0x00 Bluetooth: hci2: hardware error 0x00 Bluetooth: hci0: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci0: Injecting HCI hardware error event Bluetooth: hci0: hardware error 0x00 syz-executor.5 uses obsolete (PF_INET,SOCK_PACKET) Bluetooth: hci7: Opcode 0x0c03 failed: -110 Bluetooth: hci1: Opcode 0x0c03 failed: -110 Bluetooth: hci3: Opcode 0x0c03 failed: -110 Bluetooth: hci6: Opcode 0x0c03 failed: -110 Bluetooth: hci5: Opcode 0x0c03 failed: -110 Bluetooth: hci2: Opcode 0x0c03 failed: -110 Bluetooth: hci4: Opcode 0x0c03 failed: -110 Bluetooth: hci0: Opcode 0x0c03 failed: -110