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AHgh+RpZFYFtBi1dUKJdyWEnI/wEuVc4qNY8ocf5lCi422nfLltDQYP6yPXriMr4kW9Sum9WO6jXnqp0G5N8spA=@vger.kernel.org X-Gm-Message-State: AFuF++mPppkM1WFqQxFQYBQLYh2jpbhyr50PdccUyQPNRquVv2nnaLoN OSud/bU/uuEO5711yODzBTBvXLWPfY1byTJK6M1eGJmiqGVOzK4jZD6b3kKrsQT6YXPkR8E0EPw FHyKTAZ2+/BjZ7lucEip0lRLopcS9stfB6jGciLm5O2cNvfiOybpMzC0inSU= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:13c3:b0:4b2:e95f:37cf with SMTP id 5614622812f47-4b39806c429mr21484376b6e.8.1788101569076; Sun, 30 Aug 2026 07:52:49 -0700 (PDT) Date: Sun, 30 Aug 2026 07:52:49 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a9443c1.a8e469d2.cbf3.5609.GAE@google.com> Subject: [syzbot] [usb?] WARNING in cx231xx_send_vendor_cmd/usb_submit_urb From: syzbot To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: cf72cbb39da8 Merge tag 'io_uring-7.3-20260828' of git://gi.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=11c2ae25580000 kernel config: https://syzkaller.appspot.com/x/.config?x=5e4e3a0e188a497e dashboard link: https://syzkaller.appspot.com/bug?extid=ddccc0c0dbc0a38ffccb compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14c1cc15580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15c2ae25580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/76d43caf1866/disk-cf72cbb3.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/1821781c5c85/vmlinux-cf72cbb3.xz kernel image: https://storage.googleapis.com/syzbot-assets/31abf6144cf2/bzImage-cf72cbb3.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ddccc0c0dbc0a38ffccb@syzkaller.appspotmail.com ------------[ cut here ]------------ usb 5-1: BOGUS control dir, pipe 80000380 doesn't match bRequestType c0 WARNING: drivers/usb/core/urb.c:413 at usb_submit_urb+0x1057/0x18b0 drivers/usb/core/urb.c:411, CPU#0: syz-executor398/5632 Modules linked in: CPU: 0 UID: 0 PID: 5632 Comm: syz-executor398 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:usb_submit_urb+0x1100/0x18b0 drivers/usb/core/urb.c:411 Code: b8 00 00 00 00 00 fc ff df 41 0f b6 04 04 84 c0 0f 85 b2 05 00 00 45 0f b6 45 00 48 8b 3c 24 48 8b 74 24 18 4c 89 f2 44 89 f9 <67> 48 0f b9 3a 48 bd 00 00 00 00 00 fc ff df e9 ba f2 ff ff 44 89 RSP: 0018:ffffc900039c74f8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888026846b00 RCX: 0000000080000380 RDX: ffff8880222bc7a0 RSI: ffffffff8cc51500 RDI: ffffffff9087c3c0 RBP: dffffc0000000000 R08: 00000000000000c0 R09: 0000000000000000 R10: ffffc900039c75e0 R11: fffff52000738ec8 R12: 1ffff110045d11c8 R13: ffff888022e88e40 R14: ffff8880222bc7a0 R15: 0000000080000380 FS: 0000555560163400(0000) GS:ffff888124cdc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8c364f50f5 CR3: 000000007124e000 CR4: 00000000003526f0 Call Trace: usb_start_wait_urb+0x13f/0x5b0 drivers/usb/core/message.c:62 usb_internal_control_msg drivers/usb/core/message.c:117 [inline] usb_control_msg+0x234/0x3e0 drivers/usb/core/message.c:167 __usb_control_msg+0xf9/0x3f0 drivers/media/usb/cx231xx/cx231xx-core.c:249 cx231xx_send_vendor_cmd+0x553/0x760 drivers/media/usb/cx231xx/cx231xx-core.c:-1 cx231xx_send_usb_command+0x2e2/0x500 drivers/media/usb/cx231xx/cx231xx-core.c:205 cx231xx_i2c_recv_bytes drivers/media/usb/cx231xx/cx231xx-i2c.c:-1 [inline] cx231xx_i2c_xfer+0xd60/0x2a90 drivers/media/usb/cx231xx/cx231xx-i2c.c:386 __i2c_transfer+0x7bf/0x1fe0 drivers/i2c/i2c-core-base.c:-1 i2c_transfer+0x1cb/0x2d0 drivers/i2c/i2c-core-base.c:2344 i2c_transfer_buffer_flags+0x10d/0x1a0 drivers/i2c/i2c-core-base.c:2372 i2c_master_recv include/linux/i2c.h:79 [inline] i2cdev_read+0x10d/0x250 drivers/i2c/i2c-dev.c:155 vfs_read+0x213/0xa80 fs/read_write.c:572 ksys_read+0x150/0x270 fs/read_write.c:716 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f08f411d339 Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 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 d8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7bfb4838 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f08f411d339 RDX: 0000000000000700 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000000000009 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd7bfb49b8 R13: 0000000000000002 R14: 00007ffd7bfb4860 R15: 00007ffd7bfb4850 ---------------- Code disassembly (best guess): 0: b8 00 00 00 00 mov $0x0,%eax 5: 00 fc add %bh,%ah 7: ff lcall (bad) 8: df 41 0f filds 0xf(%rcx) b: b6 04 mov $0x4,%dh d: 04 84 add $0x84,%al f: c0 0f 85 rorb $0x85,(%rdi) 12: b2 05 mov $0x5,%dl 14: 00 00 add %al,(%rax) 16: 45 0f b6 45 00 movzbl 0x0(%r13),%r8d 1b: 48 8b 3c 24 mov (%rsp),%rdi 1f: 48 8b 74 24 18 mov 0x18(%rsp),%rsi 24: 4c 89 f2 mov %r14,%rdx 27: 44 89 f9 mov %r15d,%ecx * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 48 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%rbp 36: fc ff df 39: e9 ba f2 ff ff jmp 0xfffff2f8 3e: 44 rex.R 3f: 89 .byte 0x89 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup