===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260115 #1 Not tainted ------------------------------------- syz-executor.0/4128 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.0/4128: #0: ffff88800f8883f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801c7096f0 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f88c950 (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: 4128 Comm: syz-executor.0 Not tainted 6.19.0-rc5-next-20260115 #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: 0033:0x7f43e3a53427 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:00007ffdc51f4058 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f43e3a53427 RDX: 00007ffdc51f4137 RSI: 00007f43e3aae019 RDI: 00007ffdc51f4120 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffdc51f3ef0 R10: 00007ffdc51f3da7 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffdc51f4120 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.0/4128 Modules linked in: CPU: 1 UID: 0 PID: 4128 Comm: syz-executor.0 Not tainted 6.19.0-rc5-next-20260115 #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:ffff88804a69f9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88800f4d5280 RCX: ffffffff815660f7 RDX: 0000000000000000 RSI: ffffffff81566100 RDI: ffff88800f4d567c RBP: ffff88800f4d5280 R08: 0000000000000000 R09: fffffbfff0ba7040 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88800f4d5280 R13: 0000000000000001 R14: ffffffff85c0d150 R15: ffff88801c583c48 FS: 000055556435a400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f43e3ad3540 CR3: 00000000490d6000 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: 0033:0x7f43e3a53427 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:00007ffdc51f4058 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f43e3a53427 RDX: 00007ffdc51f4137 RSI: 00007f43e3aae019 RDI: 00007ffdc51f4120 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffdc51f3ef0 R10: 00007ffdc51f3da7 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffdc51f4120 irq event stamp: 185 hardirqs last enabled at (185): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (184): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (180): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (178): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- EXT4-fs error (device loop2): __ext4_fill_super:5560: inode #2: comm syz-executor.2: inode has both inline data and extents flags EXT4-fs (loop2): get root inode failed EXT4-fs (loop2): mount failed EXT4-fs error (device loop2): __ext4_fill_super:5560: inode #2: comm syz-executor.2: inode has both inline data and extents flags EXT4-fs (loop2): get root inode failed EXT4-fs (loop2): mount failed EXT4-fs error (device loop2): __ext4_fill_super:5560: inode #2: comm syz-executor.2: inode has both inline data and extents flags EXT4-fs (loop2): get root inode failed EXT4-fs (loop2): mount failed Bluetooth: hci0: command tx timeout Bluetooth: hci0: command tx timeout tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' syz-executor.5 (4421) used greatest stack depth: 23408 bytes left tmpfs: Bad value for 'mpol' tmpfs: Bad value for 'mpol' program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO set_capacity_and_notify: 3 callbacks suppressed loop6: detected capacity change from 0 to 6 FAT-fs (loop6): Directory bread(block 6) failed FAT-fs (loop6): error, fat_get_cluster: invalid start cluster (i_pos 0, start 0000007b) FAT-fs (loop6): Filesystem has been set read-only SELinux: Context system_u:object_r:hald_cache_t:s0 is not valid (left unmapped). program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO program syz-executor.0 is using a deprecated SCSI ioctl, please convert it to SG_IO Bluetooth: hci0: command tx timeout SELinux: security_context_str_to_sid (system_u) failed with errno=-22 SELinux: security_context_str_to_sid (system_u) failed with errno=-22 audit: type=1326 audit(1768470840.058:11): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4548 comm="syz-executor.0" exe="/syz-executor.0" sig=9 arch=c000003e syscall=231 compat=0 ip=0x7f43e3a53b19 code=0x0 Bluetooth: hci0: connection err: -111 Bluetooth: hci0: hardware error 0x08 loop1: detected capacity change from 0 to 16383 Bluetooth: hci0: connection err: -111 loop1: detected capacity change from 0 to 16383 Bluetooth: hci0: connection err: -111 loop1: detected capacity change from 0 to 16383 Bluetooth: hci0: connection err: -111 loop1: detected capacity change from 0 to 16383 Bluetooth: hci7: connection err: -111 loop7: detected capacity change from 0 to 16383 Bluetooth: hci7: hardware error 0x08 netlink: 'syz-executor.6': attribute type 8 has an invalid length. netlink: 'syz-executor.6': attribute type 8 has an invalid length. audit: type=1326 audit(1768470840.890:12): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4548 comm="syz-executor.0" exe="/syz-executor.0" sig=9 arch=c000003e syscall=231 compat=0 ip=0x7f43e3a53b19 code=0x0 Bluetooth: hci7: connection err: -111 audit: type=1326 audit(1768470840.968:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4603 comm="syz-executor.0" exe="/syz-executor.0" sig=9 arch=c000003e syscall=231 compat=0 ip=0x7f43e3a53b19 code=0x0 loop7: detected capacity change from 0 to 16383 Bluetooth: hci0: connection err: -111 netlink: 'syz-executor.6': attribute type 8 has an invalid length. loop1: detected capacity change from 0 to 16383 Bluetooth: hci7: connection err: -111 loop7: detected capacity change from 0 to 16383 netlink: 'syz-executor.6': attribute type 8 has an invalid length. netlink: 'syz-executor.6': attribute type 8 has an invalid length. audit: type=1326 audit(1768470841.835:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4659 comm="syz-executor.0" exe="/syz-executor.0" sig=9 arch=c000003e syscall=231 compat=0 ip=0x7f43e3a53b19 code=0x0 syz-executor.2 uses obsolete (PF_INET,SOCK_PACKET) Bluetooth: hci0: Opcode 0x0c03 failed: -110 Bluetooth: hci0: hardware error 0x08 Bluetooth: hci7: Opcode 0x0c03 failed: -110 Bluetooth: hci7: hardware error 0x08 audit: type=1326 audit(1768470842.722:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4698 comm="syz-executor.0" exe="/syz-executor.0" sig=9 arch=c000003e syscall=231 compat=0 ip=0x7f43e3a53b19 code=0x0