------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: CPU: 1 PID: 8381 at kernel/locking/mutex.c:575 __mutex_lock_common+0x193b/0x2400 kernel/locking/mutex.c:575
Modules linked in:

CPU: 0 PID: 8381 Comm: syz.6.1066 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:__mutex_lock_common+0x193b/0x2400 kernel/locking/mutex.c:575
Code: 00 00 83 3d ee f7 9b 04 00 4c 8d b4 24 e0 00 00 00 0f 85 02 e8 ff ff 48 c7 c7 60 1a 2b 8a 48 c7 c6 a0 1a 2b 8a e8 55 6b ec ff <0f> 0b e9 e8 e7 ff ff e8 89 1e 2f f7 e9 41 fb ff ff 0f 0b e9 63 f1
RSP: 0018:ffffc900037df640 EFLAGS: 00010246

RAX: aa86aa16b4ec1800 RBX: ffff888079818880 RCX: 0000000000080000
RDX: ffffc9000d6a1000 RSI: 0000000000003d2f RDI: 0000000000003d30
RBP: ffffc900037df7d0 R08: ffffc900037df167 R09: 1ffff920006fbe2c
R10: dffffc0000000000 R11: fffff520006fbe2d R12: 0000000000000000
R13: dffffc0000000000 R14: ffffc900037df720 R15: 0000000000000000
FS:  00007fbdaea906c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558d45ea4138 CR3: 0000000065b90000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
 roccat_open+0xf2/0x5a0 drivers/hid/hid-roccat.c:178
 chrdev_open+0x585/0x5f0 fs/char_dev.c:414
 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: 0033:0x7fbdb0839559
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:00007fbdaea90028 EFLAGS: 00000246
 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fbdb0abffa0 RCX: 00007fbdb0839559
RDX: 0000000000000002 RSI: 0000200000005100 RDI: ffffffffffffff9c
RBP: 00007fbdb08d0b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fbdb0ac0038 R14: 00007fbdb0abffa0 R15: 00007ffdea665498
 </TASK>