===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.1/282 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.1/282: #0: ffff88800f8bc3f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff88801b93d020 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f8c8950 (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: 0 UID: 0 PID: 282 Comm: syz-executor.1 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_mkdir+0x331/0xb30 vfs_mkdir+0x6d8/0xc00 do_mkdirat+0x11a/0x440 __x64_sys_mkdir+0x65/0x80 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f32cbaa9c27 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 53 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:00007fff4fc7d9d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fff4fc7da60 RCX: 00007f32cbaa9c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007fff4fc7da60 RBP: 00007fff4fc7da3c R08: 0000000000000000 R09: 0000000000000004 R10: 00007fff4fc7d776 R11: 0000000000000206 R12: 0000000000000032 R13: 000000000001cc2a R14: 0000000000000002 R15: 00007fff4fc7daa0 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.1/282 Modules linked in: CPU: 0 UID: 0 PID: 282 Comm: syz-executor.1 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:ffff88801b5579e0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801b19d280 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff88801b19d67c RBP: ffff88801b19d280 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801b19d280 R13: 0000000000000001 R14: ffffffff85c0ce80 R15: ffff88801b9f3c48 FS: 000055556f2de400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f09b1d63718 CR3: 000000000ea78000 CR4: 0000000000350ef0 Call Trace: __wait_on_freeing_inode+0x10f/0x350 insert_inode_locked+0x25f/0x890 __ext4_new_inode+0x223d/0x4cd0 ext4_mkdir+0x331/0xb30 vfs_mkdir+0x6d8/0xc00 do_mkdirat+0x11a/0x440 __x64_sys_mkdir+0x65/0x80 do_syscall_64+0xbf/0x420 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f32cbaa9c27 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 53 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:00007fff4fc7d9d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007fff4fc7da60 RCX: 00007f32cbaa9c27 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007fff4fc7da60 RBP: 00007fff4fc7da3c R08: 0000000000000000 R09: 0000000000000004 R10: 00007fff4fc7d776 R11: 0000000000000206 R12: 0000000000000032 R13: 000000000001cc2a R14: 0000000000000002 R15: 00007fff4fc7daa0 irq event stamp: 302003 hardirqs last enabled at (302003): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (302002): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (301998): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (301996): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. loop1: detected capacity change from 0 to 6 FAT-fs (loop1): Directory bread(block 6) failed FAT-fs (loop1): Directory bread(block 6) failed FAT-fs (loop1): Directory bread(block 6) failed 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: hci5: Opcode 0x0c1a failed: -4 Bluetooth: hci6: Opcode 0x0c1a failed: -4 Bluetooth: hci7: Opcode 0x0c1a failed: -4 sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. 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: hci5: Opcode 0x0c1a failed: -4 Bluetooth: hci6: Opcode 0x0c1a failed: -4 Bluetooth: hci7: Opcode 0x0c1a failed: -4 sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. 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: hci5: Opcode 0x0c1a failed: -4 Bluetooth: hci6: Opcode 0x0c1a failed: -4 Bluetooth: hci7: Opcode 0x0c1a failed: -4 sr 1:0:0:0: [sr0] CDROM not ready. Make sure there is a disc in the drive. : Can't lookup blockdev : Can't lookup blockdev : Can't lookup blockdev : Can't lookup blockdev Bluetooth: hci0: command 0x0c1a tx timeout audit: type=1326 audit(1768293240.990:11): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4674 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f5d908c6b19 code=0x0 audit: type=1400 audit(1768293241.092:12): avc: denied { write } for pid=4674 comm="syz-executor.5" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 Bluetooth: hci7: command 0x0c1a tx timeout Bluetooth: hci6: command 0x0c1a tx timeout Bluetooth: hci5: 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 audit: type=1326 audit(1768293241.822:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4674 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f5d908c6b19 code=0x0 audit: type=1326 audit(1768293241.894:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4692 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f5d908c6b19 code=0x0 audit: type=1326 audit(1768293242.041:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4710 comm="syz-executor.0" exe="/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f09b480eb19 code=0x0 Bluetooth: hci0: command 0x0c1a tx timeout audit: type=1326 audit(1768293242.974:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4729 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f5d908c6b19 code=0x0 audit: type=1326 audit(1768293242.986:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4738 comm="syz-executor.0" exe="/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f09b480eb19 code=0x0 Bluetooth: hci5: command 0x0c1a tx timeout Bluetooth: hci2: command 0x0c1a tx timeout Bluetooth: hci3: command 0x0c1a tx timeout Bluetooth: hci4: command 0x0c1a tx timeout Bluetooth: hci1: command 0x0c1a tx timeout Bluetooth: hci6: command 0x0c1a tx timeout Bluetooth: hci7: command 0x0c1a tx timeout UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 audit: type=1326 audit(1768293243.867:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4762 comm="syz-executor.0" exe="/syz-executor.0" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f09b480eb19 code=0x0 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy audit: type=1326 audit(1768293243.877:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=4765 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f5d908c6b19 code=0x0 misc raw-gadget: fail, usb_gadget_register_driver returned -16 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 Bluetooth: hci0: command 0x0c1a tx timeout UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 Bluetooth: hci5: command 0x0c1a tx timeout Bluetooth: hci7: command 0x0c1a tx timeout Bluetooth: hci3: command 0x0c1a tx timeout Bluetooth: hci2: command 0x0c1a tx timeout Bluetooth: hci6: command 0x0c1a tx timeout Bluetooth: hci1: command 0x0c1a tx timeout Bluetooth: hci4: command 0x0c1a tx timeout UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16 UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy misc raw-gadget: fail, usb_gadget_register_driver returned -16