===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260116 #1 Not tainted ------------------------------------- syz-executor.3/5036 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.3/5036: #0: ffff88800f7823f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff888014153388 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f786950 (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: 5036 Comm: syz-executor.3 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: 0033:0x7f28cc54f427 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:00007ffd732b8bc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f28cc54f427 RDX: 00007ffd732b8ca3 RSI: 00007f28cc5aa02f RDI: 00007ffd732b8c90 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd732b8a60 R10: 00007ffd732b8917 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffd732b8c90 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.3/5036 Modules linked in: CPU: 1 UID: 0 PID: 5036 Comm: syz-executor.3 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:ffff88804c5479a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88800f803700 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88800f803afc RBP: ffff88800f803700 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88800f803700 R13: 0000000000000001 R14: ffffffff85c0d7e0 R15: ffff8880141b8318 FS: 000055555c83e400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055555c83e708 CR3: 0000000049447000 CR4: 0000000000350ef0 Call Trace: __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: 0033:0x7f28cc54f427 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:00007ffd732b8bc8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f28cc54f427 RDX: 00007ffd732b8ca3 RSI: 00007f28cc5aa02f RDI: 00007ffd732b8c90 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd732b8a60 R10: 00007ffd732b8917 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffd732b8c90 irq event stamp: 453 hardirqs last enabled at (453): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (452): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (448): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (446): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- syz-executor.2 uses obsolete (PF_INET,SOCK_PACKET) Bluetooth: hci0: Opcode 0x0c1a failed: -22 Bluetooth: hci0: Opcode 0x0c1a failed: -22 loop1: detected capacity change from 0 to 2048 EXT4-fs warning (device loop1): ext4_multi_mount_protect:288: Invalid MMP block in superblock loop1: detected capacity change from 0 to 2048 Bluetooth: hci0: Opcode 0x0c1a failed: -22 EXT4-fs warning (device loop1): ext4_multi_mount_protect:288: Invalid MMP block in superblock Bluetooth: hci0: Opcode 0x0c1a failed: -22 program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO No source specified No source specified tmpfs: Unknown parameter 'ÆÃ\ÅTòßOO›Ç.\ž‡' loop7: detected capacity change from 0 to 4 EXT4-fs (loop7): VFS: Can't find ext4 filesystem loop7: detected capacity change from 0 to 4 EXT4-fs (loop7): VFS: Can't find ext4 filesystem loop7: detected capacity change from 0 to 4 EXT4-fs (loop7): VFS: Can't find ext4 filesystem Bluetooth: hci1: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci1: ACL packet for unknown connection handle 2745 Bluetooth: hci1: ISO packet for unknown connection handle 1106 Bluetooth: hci1: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci1: ACL packet for unknown connection handle 2745 Bluetooth: hci1: ISO packet for unknown connection handle 1106 loop7: detected capacity change from 0 to 4 EXT4-fs (loop7): VFS: Can't find ext4 filesystem loop7: detected capacity change from 0 to 4 EXT4-fs (loop7): VFS: Can't find ext4 filesystem Bluetooth: hci2: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci1: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci2: ACL packet for unknown connection handle 2745 Bluetooth: hci2: ISO packet for unknown connection handle 1106 Bluetooth: hci1: ACL packet for unknown connection handle 2745 audit: type=1400 audit(1768576870.684:25): avc: denied { watch_reads } for pid=5460 comm="syz-executor.6" path="/syzkaller-testdir530609871/syzkaller.mHZM3k/74" dev="sda" ino=15982 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=dir permissive=1 Bluetooth: hci1: ISO packet for unknown connection handle 1106 Bluetooth: hci2: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci2: ACL packet for unknown connection handle 2745 Bluetooth: hci2: ISO packet for unknown connection handle 1106 Bluetooth: hci2: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci1: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci2: ACL packet for unknown connection handle 2745 Bluetooth: hci2: ISO packet for unknown connection handle 1106 Bluetooth: hci1: ACL packet for unknown connection handle 2745 Bluetooth: hci1: ISO packet for unknown connection handle 1106 Bluetooth: hci1: unexpected cc 0x2029 length: 16 > 1 Bluetooth: hci1: ACL packet for unknown connection handle 2745 Bluetooth: hci1: ISO packet for unknown connection handle 1106 Bluetooth: hci5: unexpected cc 0x2029 length: 0 < 1 Bluetooth: hci5: ACL packet for unknown connection handle 2745 Bluetooth: hci5: unexpected event 0x2f length: 763 > 260 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci5: unexpected cc 0x2029 length: 0 < 1 Bluetooth: hci5: ACL packet for unknown connection handle 2745 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci5: unexpected event 0x2f length: 763 > 260 program syz-executor.7 is using a deprecated SCSI ioctl, please convert it to SG_IO Bluetooth: hci5: unexpected cc 0x2029 length: 0 < 1 Bluetooth: hci5: ACL packet for unknown connection handle 2745 Bluetooth: hci5: unexpected event 0x2f length: 763 > 260 Bluetooth: hci5: ISO packet for unknown connection handle 1106 9pnet_fd: Insufficient options for proto=fd 9pnet_fd: Insufficient options for proto=fd Bluetooth: hci5: unexpected cc 0x2029 length: 0 < 1 Bluetooth: hci5: ACL packet for unknown connection handle 2745 Bluetooth: hci5: unexpected event 0x2f length: 763 > 260 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci5: unexpected cc 0x2029 length: 0 < 1 Bluetooth: hci5: ACL packet for unknown connection handle 2745 Bluetooth: hci5: unexpected event 0x2f length: 763 > 260 Bluetooth: hci5: ISO packet for unknown connection handle 1106 Bluetooth: hci1: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci1: Injecting HCI hardware error event Bluetooth: hci1: hardware error 0x00 Bluetooth: hci2: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci2: Injecting HCI hardware error event Bluetooth: hci2: hardware error 0x00 ref_ctr_offset mismatch. inode: 0x3e98 offset: 0x0 ref_ctr_offset(old): 0x0 ref_ctr_offset(new): 0x4 ref_ctr_offset mismatch. inode: 0x3ea9 offset: 0x0 ref_ctr_offset(old): 0x0 ref_ctr_offset(new): 0x4 ref_ctr_offset mismatch. inode: 0x3ea5 offset: 0x0 ref_ctr_offset(old): 0x0 ref_ctr_offset(new): 0x4 No source specified No source specified Bluetooth: hci5: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci5: Injecting HCI hardware error event Bluetooth: hci5: hardware error 0x00