===================================== WARNING: bad unlock balance detected! 6.19.0-rc5-next-20260113 #1 Not tainted ------------------------------------- syz-executor.3/3989 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.3/3989: #0: ffff88800f9683f8 (sb_writers#3){.+.+}-{0:0}, at: filename_create+0xf7/0x400 #1: ffff8880363f83e0 (&type->i_mutex_dir_key#3/1){+.+.}-{4:4}, at: filename_create+0x1b1/0x400 #2: ffff88800f990950 (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: 3989 Comm: syz-executor.3 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: 0033:0x7f38ba39f427 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:00007fffbb2f92c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f38ba39f427 RDX: 00007fffbb2f93a7 RSI: 00007f38ba3fa019 RDI: 00007fffbb2f9390 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffbb2f9160 R10: 00007fffbb2f9017 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007fffbb2f9390 ------------[ cut here ]------------ WARNING: kernel/rcu/tree_plugin.h:443 at __rcu_read_unlock+0x25f/0x5c0, CPU#0: syz-executor.3/3989 Modules linked in: CPU: 0 UID: 0 PID: 3989 Comm: syz-executor.3 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:ffff88804980f9a0 EFLAGS: 00010286 RAX: 00000000ffffffff RBX: ffff888019818000 RCX: ffffffff815664c7 RDX: 0000000000000000 RSI: ffffffff815664d0 RDI: ffff8880198183fc RBP: ffff888019818000 R08: 0000000000000000 R09: fffffbfff0ba6ff4 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888019818000 R13: 0000000000000001 R14: ffffffff85c0e280 R15: ffff8880363bb2c0 FS: 000055555778d400(0000) GS:ffff8880e5342000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f38ba41f543 CR3: 00000000494fa000 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: 0033:0x7f38ba39f427 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:00007fffbb2f92c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000058 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f38ba39f427 RDX: 00007fffbb2f93a7 RSI: 00007f38ba3fa019 RDI: 00007fffbb2f9390 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fffbb2f9160 R10: 00007fffbb2f9017 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007fffbb2f9390 irq event stamp: 587 hardirqs last enabled at (587): [] _raw_spin_unlock_irqrestore+0x2c/0x50 hardirqs last disabled at (586): [] _raw_spin_lock_irqsave+0x53/0x60 softirqs last enabled at (582): [] kernel_fpu_end+0x59/0x70 softirqs last disabled at (580): [] kernel_fpu_begin_mask+0x1bb/0x300 ---[ end trace 0000000000000000 ]--- sit: Src spoofed 0.0.0.0/2002:0:240::800 -> 0.0.0.0/:: sit: Src spoofed 0.0.0.0/2002:0:240::800 -> 0.0.0.0/:: sit: Src spoofed 0.0.0.0/2002:0:240::800 -> 0.0.0.0/:: sit: Src spoofed 0.0.0.0/2002:0:240::800 -> 0.0.0.0/:: sit: Src spoofed 0.0.0.0/2002:0:240::800 -> 0.0.0.0/:: loop5: detected capacity change from 0 to 264192 loop5: detected capacity change from 0 to 264192 perf: interrupt took too long (4087 > 4080), lowering kernel.perf_event_max_sample_rate to 48000 perf: interrupt took too long (5186 > 5108), lowering kernel.perf_event_max_sample_rate to 38000 perf: interrupt took too long (6513 > 6482), lowering kernel.perf_event_max_sample_rate to 30000 audit: type=1400 audit(1768296285.252:10): avc: denied { write } for pid=4091 comm="syz-executor.7" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 loop5: detected capacity change from 0 to 264192 No source specified audit: type=1107 audit(1768296286.331:11): pid=4142 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 msg='Þ' audit: type=1107 audit(1768296286.386:12): pid=4142 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 msg='Þ' audit: type=1107 audit(1768296287.122:13): pid=4148 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 msg='Þ' audit: type=1107 audit(1768296287.352:14): pid=4168 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 msg='Þ' audit: type=1107 audit(1768296287.590:15): pid=4190 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 msg='Þ' 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 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 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 loop7: detected capacity change from 0 to 180 loop2: detected capacity change from 0 to 592 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 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 loop4: detected capacity change from 0 to 1298 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 loop1: detected capacity change from 0 to 608 loop3: detected capacity change from 0 to 5168 loop7: detected capacity change from 0 to 1352 loop4: detected capacity change from 0 to 1304 loop1: detected capacity change from 0 to 5408 loop3: detected capacity change from 0 to 352 loop7: detected capacity change from 0 to 1352 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 loop0: detected capacity change from 0 to 128 loop7: detected capacity change from 0 to 1352 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