WARNING in roccat_open

Status: upstream: reported on 2026/10/25 16:37
Reported-by: syzbot+8954b9b31da7eb9e544b@syzkaller.appspotmail.com
First crash: 6d11h, last: 5d11h
▶ ▼ Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in roccat_open -1 1 4d07h 4d07h 0/3 upstream: reported on 2026/10/27 20:05
linux-5.15 WARNING in roccat_open -1 2 2d06h 4d07h 0/3 upstream: reported on 2026/10/27 19:57
upstream WARNING in roccat_open prio:high input -1 18 39d 58d 0/29 upstream: reported on 2026/09/03 15:58

Sample crash report:
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: CPU: 0 PID: 10839 at kernel/locking/mutex.c:582 __mutex_lock_common kernel/locking/mutex.c:582 [inline]
WARNING: CPU: 0 PID: 10839 at kernel/locking/mutex.c:582 __mutex_lock+0xb48/0xc80 kernel/locking/mutex.c:747
Modules linked in:
CPU: 0 PID: 10839 Comm: syz.4.1269 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:582 [inline]
RIP: 0010:__mutex_lock+0xb48/0xc80 kernel/locking/mutex.c:747
Code: 04 08 84 c0 0f 85 2f 01 00 00 83 3d 51 64 ee 04 00 0f 85 d1 f5 ff ff 48 c7 c7 e0 bb ea 8a 48 c7 c6 80 bc ea 8a e8 08 d9 b1 f6 <0f> 0b e9 b7 f5 ff ff 0f 0b e9 75 f9 ff ff 0f 0b e9 4f f6 ff ff 48
RSP: 0018:ffffc90003227680 EFLAGS: 00010246
RAX: 938616450fb25200 RBX: ffff888022404880 RCX: 0000000000080000
RDX: ffffc9000d4eb000 RSI: 0000000000003ec2 RDI: 0000000000003ec3
RBP: ffffc900032277e0 R08: ffff8880b8c28c53 R09: 1ffff1101718518a
R10: dffffc0000000000 R11: ffffed101718518b R12: 1ffff92000644ee0
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS:  00007fbd736bf6c0(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbd7369ed58 CR3: 000000005faca000 CR4: 00000000003506f0
DR0: 0000000000000001 DR1: 0000000000010000 DR2: 000000000000000a
DR3: 0000000000000009 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 roccat_open+0xf6/0x5a0 drivers/hid/hid-roccat.c:178
 chrdev_open+0x58c/0x600 fs/char_dev.c:414
 do_dentry_open+0x880/0x14b0 fs/open.c:929
 do_open fs/namei.c:3695 [inline]
 path_openat+0x284f/0x3270 fs/namei.c:3856
 do_filp_open+0x1f2/0x430 fs/namei.c:3883
 do_sys_openat2+0x134/0x1d0 fs/open.c:1422
 do_sys_open fs/open.c:1437 [inline]
 __do_sys_openat fs/open.c:1453 [inline]
 __se_sys_openat fs/open.c:1448 [inline]
 __x64_sys_openat+0x139/0x160 fs/open.c:1448
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fbd7279f559
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:00007fbd736bf028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fbd72a25fa0 RCX: 00007fbd7279f559
RDX: 0000000000000002 RSI: 00002000000014c0 RDI: ffffffffffffff9c
RBP: 00007fbd72836b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fbd72a26038 R14: 00007fbd72a25fa0 R15: 00007fffc14939c8
 </TASK>

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/10/26 16:18 linux-6.6.y 0aebf2870d53 168cb7a2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in roccat_open
2026/10/26 16:18 linux-6.6.y 0aebf2870d53 168cb7a2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in roccat_open
2026/10/25 16:37 linux-6.6.y 0aebf2870d53 1d9ca40b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-6-kasan WARNING in roccat_open
* Struck through repros no longer work on HEAD.