------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(!test_bit(class_idx, lock_classes_in_use))
WARNING: CPU: 0 PID: 16247 at kernel/locking/lockdep.c:4982 __lock_acquire+0x5a9d/0x7b50 kernel/locking/lockdep.c:4982
Modules linked in:
CPU: 0 PID: 16247 Comm: syz.4.2923 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__lock_acquire+0x5a9d/0x7b50 kernel/locking/lockdep.c:4982
Code: 04 08 84 c0 0f 85 4e 1c 00 00 83 3d 24 f8 2d 0c 00 0f 85 bd b7 ff ff 48 c7 c7 80 2a 2b 8a 48 c7 c6 20 53 2b 8a e8 53 1f 58 08 <0f> 0b e9 a3 b7 ff ff 0f 0b e9 dd b8 ff ff 89 c1 84 c9 0f 85 aa b3
RSP: 0018:ffffc9000305f4a0 EFLAGS: 00010046
RAX: 4a7a59145ec04c00 RBX: 0000000001eb0c53 RCX: 0000000000080000
RDX: ffffc90004f49000 RSI: 0000000000002650 RDI: 0000000000002651
RBP: ffffc9000305f6d0 R08: ffff8880b902795b R09: 1ffff11017204f2b
R10: dffffc0000000000 R11: ffffed1017204f2c R12: ffff88801adb6450
R13: ffff88801adb5940 R14: 0000000000000000 R15: ffff88801adb6430
FS:  00007fbb9be5c6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd72ecb6000 CR3: 000000002419d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000006800 DR2: 0000000000009951
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire+0x19e/0x400 kernel/locking/lockdep.c:5623
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
 _raw_spin_lock_irq+0xab/0xf0 kernel/locking/spinlock.c:170
 spin_lock_irq include/linux/spinlock.h:389 [inline]
 dev_open+0x47/0x1b0 drivers/usb/gadget/legacy/inode.c:1917
 do_dentry_open+0x7f7/0xf90 fs/open.c:826
 do_open fs/namei.c:3659 [inline]
 path_openat+0x2718/0x2fb0 fs/namei.c:3793
 do_filp_open+0x1df/0x400 fs/namei.c:3820
 do_sys_openat2+0x14b/0x500 fs/open.c:1255
 do_sys_open fs/open.c:1271 [inline]
 __do_sys_openat fs/open.c:1287 [inline]
 __se_sys_openat fs/open.c:1282 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1282
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fbb9dc04159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbb9be5c028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fbb9de8bfa0 RCX: 00007fbb9dc04159
RDX: 0000000000000802 RSI: 0000200000000300 RDI: ffffffffffffff9c
RBP: 00007fbb9dc9b024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fbb9de8c038 R14: 00007fbb9de8bfa0 R15: 00007ffe67e4d028
 </TASK>