===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260114 #1 Not tainted ------------------------------------- syz-executor.5/4168 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.5/4168: #0: ffff88800f7043f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801bce7640 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f638950 (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: 4168 Comm: syz-executor.5 Not tainted 6.19.0-rc5-next-20260114 #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_mknod+0x2eb/0x4f0 vfs_mknod+0x6a9/0xb20 unix_bind+0x31e/0x1300 __sys_bind+0x1dd/0x2b0 __x64_sys_bind+0x73/0xb0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbb94ec9b19 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:00007fbb9243f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 00007fbb94fdcf60 RCX: 00007fbb94ec9b19 RDX: 000000000000006e RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007fbb94f23f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeb097be0f R14: 00007fbb9243f300 R15: 0000000000022000 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.5/4168 Modules linked in: CPU: 1 UID: 0 PID: 4168 Comm: syz-executor.5 Not tainted 6.19.0-rc5-next-20260114 #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 16 c0 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 24 74 03 e8 bc 5c 56 00 e9 RSP: 0018:ffff888049d57870 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888014668000 RCX: ffffc9000bee9000 RDX: 0000000000000000 RSI: ffffffff81565a30 RDI: ffff8880146683fc RBP: ffff888014668000 R08: 0000000000000000 R09: fffffbfff0ba6ffc R10: 0000000000000000 R11: 0000000000000001 R12: ffff888014668000 R13: 0000000000000001 R14: ffffffff85c103a0 R15: ffff88801bce1628 FS: 00007fbb9243f700(0000) GS:ffff8880e5443000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d923000 CR3: 0000000050204000 CR4: 0000000000350ef0 Call Trace: __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_mknod+0x2eb/0x4f0 vfs_mknod+0x6a9/0xb20 unix_bind+0x31e/0x1300 __sys_bind+0x1dd/0x2b0 __x64_sys_bind+0x73/0xb0 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fbb94ec9b19 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:00007fbb9243f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000031 RAX: ffffffffffffffda RBX: 00007fbb94fdcf60 RCX: 00007fbb94ec9b19 RDX: 000000000000006e RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007fbb94f23f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeb097be0f R14: 00007fbb9243f300 R15: 0000000000022000 irq event stamp: 665 hardirqs last enabled at (665): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (664): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (660): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (658): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- program syz-executor.5 is using a deprecated SCSI ioctl, please convert it to SG_IO audit: type=1400 audit(1768384195.610:13): avc: denied { watch_reads } for pid=4240 comm="syz-executor.4" path="/syzkaller-testdir501747914/syzkaller.ksgiGg/12/file0" dev="sda" ino=16010 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=file permissive=1 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. Bluetooth: hci2: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci2: Injecting HCI hardware error event Bluetooth: hci2: hardware error 0x00 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 34 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 35 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 loop7: detected capacity change from 0 to 192 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 34 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 35 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 tmpfs: Unknown parameter './file0' sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 34 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 35 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 syz-executor.0 (4321) used greatest stack depth: 23808 bytes left sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 34 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 sr 1:0:0:0: [sr0] tag#0 unaligned transfer I/O error, dev sr0, sector 35 op 0x0:(READ) flags 0x800000 phys_seg 1 prio class 2 audit: type=1326 audit(1768384197.543:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4423 comm="syz-executor.0" exe="/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f6f5f9b9b19 code=0x0 audit: type=1326 audit(1768384197.594:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4431 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fbb94ec9b19 code=0x0 Bluetooth: hci2: Opcode 0x0c03 failed: -110 audit: type=1326 audit(1768384198.426:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4431 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fbb94ec9b19 code=0x0 Bluetooth: hci7: unexpected cc 0x0c03 length: 249 > 1 Bluetooth: hci7: unexpected cc 0x1003 length: 249 > 9 Bluetooth: hci7: unexpected cc 0x1001 length: 249 > 9 Bluetooth: hci7: unexpected cc 0x0c23 length: 249 > 4 Bluetooth: hci7: unexpected cc 0x0c38 length: 249 > 2 Bluetooth: hci7: command tx timeout Bluetooth: hci7: command tx timeout