===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.1/4848 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.1/4848: #0: ffff88800a2183f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff8880463af640 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800a21c950 (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: 4848 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_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: 0033:0x7fd52da4e427 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:00007fffa218a488 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd52da4e427 RDX: 00007fffa218a567 RSI: 00007fd52daa9019 RDI: 00007fffa218a550 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffa218a320 R10: 00007fffa218a1d7 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007fffa218a550 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#1: syz-executor.1/4848 Modules linked in: CPU: 1 UID: 0 PID: 4848 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:ffff88804ea279a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff88801718d280 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff88801718d67c RBP: ffff88801718d280 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801718d280 R13: 0000000000000001 R14: ffffffff85c10300 R15: ffff888046268ca0 FS: 000055557c206400(0000) GS:ffff8880e5442000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd52dace541 CR3: 0000000054948000 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: 0033:0x7fd52da4e427 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:00007fffa218a488 EFLAGS: 00000206 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd52da4e427 RDX: 00007fffa218a567 RSI: 00007fd52daa9019 RDI: 00007fffa218a550 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffa218a320 R10: 00007fffa218a1d7 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007fffa218a550 irq event stamp: 249 hardirqs last enabled at (249): [] irqentry_exit+0x17b/0x650 hardirqs last disabled at (248): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (242): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (240): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- 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: hci4: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci4: Injecting HCI hardware error event Bluetooth: hci4: hardware error 0x00 set_capacity_and_notify: 3 callbacks suppressed loop6: detected capacity change from 0 to 16383 loop6: detected capacity change from 0 to 16383 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: hci5: hardware error 0x00 loop6: detected capacity change from 0 to 16383 loop6: detected capacity change from 0 to 16383 loop6: detected capacity change from 0 to 16383 netlink: 32 bytes leftover after parsing attributes in process `syz-executor.7'. netlink: 32 bytes leftover after parsing attributes in process `syz-executor.7'. Bluetooth: hci4: Opcode 0x0c03 failed: -110 Bluetooth: hci1: Opcode 0x0c03 failed: -110 Bluetooth: hci5: Opcode 0x0c03 failed: -110 random: crng reseeded on system resumption netlink: 32 bytes leftover after parsing attributes in process `syz-executor.7'. random: crng reseeded on system resumption random: crng reseeded on system resumption netlink: 32 bytes leftover after parsing attributes in process `syz-executor.7'. random: crng reseeded on system resumption audit: type=1326 audit(1768293912.017:10): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5010 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fda83ac4b19 code=0x7ffc0000 audit: type=1326 audit(1768293912.018:11): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5010 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=263 compat=0 ip=0x7fda83ac4b19 code=0x7ffc0000 audit: type=1326 audit(1768293912.020:12): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5010 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fda83ac4b19 code=0x7ffc0000 audit: type=1326 audit(1768293912.021:13): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5010 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=83 compat=0 ip=0x7fda83ac3c27 code=0x7ffc0000 audit: type=1326 audit(1768293912.021:14): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5010 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=165 compat=0 ip=0x7fda83ac604a code=0x7ffc0000 netlink: 32 bytes leftover after parsing attributes in process `syz-executor.7'. audit: type=1326 audit(1768293912.026:15): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5010 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=257 compat=0 ip=0x7fda83a77a04 code=0x7ffc0000 audit: type=1326 audit(1768293912.026:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5010 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fda83ac4b19 code=0x7ffc0000 audit: type=1326 audit(1768293912.026:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5010 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=259 compat=0 ip=0x7fda83ac4b19 code=0x7ffc0000 audit: type=1326 audit(1768293912.031:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5010 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fda83ac4b19 code=0x7ffc0000 audit: type=1326 audit(1768293912.031:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=5010 comm="syz-executor.5" exe="/syz-executor.5" sig=0 arch=c000003e syscall=202 compat=0 ip=0x7fda83ac4b19 code=0x7ffc0000 loop4: detected capacity change from 0 to 4 EXT4-fs (loop4): fragment/cluster size (32768) != block size (2048) loop4: detected capacity change from 0 to 4 EXT4-fs (loop4): fragment/cluster size (32768) != block size (2048) loop4: detected capacity change from 0 to 4 EXT4-fs (loop4): fragment/cluster size (32768) != block size (2048) Bluetooth: hci2: Controller not accepting commands anymore: ncmd = 0 Bluetooth: hci2: Injecting HCI hardware error event Bluetooth: hci2: hardware error 0x00 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 SELinux: Context system_u:object_r:hald_cache_t:s0 is not valid (left unmapped). 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: hci2: Opcode 0x0c03 failed: -110