WARNING in roccat_open

Status: upstream: reported on 2026/10/27 20:05
Reported-by: syzbot+f590b03bc300f9084552@syzkaller.appspotmail.com
First crash: 2d12h, last: 2d12h
▶ ▼ Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.6 WARNING in roccat_open -1 3 3d16h 4d16h 0/2 upstream: reported on 2026/10/25 16:37
linux-5.15 WARNING in roccat_open -1 2 11h29m 2d12h 0/3 upstream: reported on 2026/10/27 19:57
upstream WARNING in roccat_open prio:high input -1 18 38d 56d 0/29 upstream: reported on 2026/09/03 15:58

Sample crash report:
WARNING: CPU: 1 PID: 4573 at kernel/locking/mutex.c:582 __mutex_lock_common kernel/locking/mutex.c:582 [inline]
WARNING: CPU: 1 PID: 4573 at kernel/locking/mutex.c:582 __mutex_lock+0xa1c/0xae0 kernel/locking/mutex.c:747
Modules linked in:

CPU: 1 PID: 4573 Comm: syz.3.56 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+0xa1c/0xae0 kernel/locking/mutex.c:747
Code: 04 20 84 c0 0f 85 b3 00 00 00 83 3d 05 1e df 04 00 0f 85 f5 f6 ff ff 48 c7 c7 20 04 ac 8a 48 c7 c6 c0 04 ac 8a e8 04 c3 09 f7 <0f> 0b e9 db f6 ff ff 0f 0b e9 89 f9 ff ff 48 c7 c1 40 71 c7 97 80
RSP: 0018:ffffc900049a7680 EFLAGS: 00010246
RAX: cf9095af1837d200 RBX: ffff8880551d4080 RCX: 0000000000080000
RDX: ffffc9000ec6b000 RSI: 000000000000ba1a RDI: 000000000000ba1b
RBP: ffffc900049a77e0 R08: ffffffff8f22dfef R09: 1ffffffff1e45bfd
R10: dffffc0000000000 R11: fffffbfff1e45bfe R12: dffffc0000000000
R13: 0000000000000000 R14: ffffffff9807bca0 R15: 0000000000000000
FS:  00007f6f9e4e86c0(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6f9e4c7d58 CR3: 000000007a64b000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 roccat_open+0xf2/0x5a0 drivers/hid/hid-roccat.c:178
 chrdev_open+0x585/0x5f0 fs/char_dev.c:414
 do_dentry_open+0x7dd/0x10b0 fs/open.c:882
 do_open fs/namei.c:3677 [inline]
 path_openat+0x2674/0x2f10 fs/namei.c:3834
 do_filp_open+0x1ee/0x420 fs/namei.c:3861
 do_sys_openat2+0x14b/0x4f0 fs/open.c:1320
 do_sys_open fs/open.c:1336 [inline]
 __do_sys_openat fs/open.c:1352 [inline]
 __se_sys_openat fs/open.c:1347 [inline]
 __x64_sys_openat+0x135/0x160 fs/open.c:1347
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f6f9d59f559
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:00007f6f9e4e8028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f6f9d825fa0 RCX: 00007f6f9d59f559
RDX: 0000000000000002 RSI: 00002000000014c0 RDI: ffffffffffffff9c
RBP: 00007f6f9d636b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6f9d826038 R14: 00007f6f9d825fa0 R15: 00007ffeaa278a18
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/10/27 20:04 linux-6.1.y 79807e970724 96923c60 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in roccat_open
* Struck through repros no longer work on HEAD.