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AKwUvBx4w/sV+Mf+AKnsgEuCg7kHm7P+OHPe+Ei9BgxRdAx7Jq/ox6KAr+ETWjf7E3Q6YnLii+RDWfHy5j+3p0o=@vger.kernel.org X-Gm-Message-State: AFuF++nCBPINguGWWuLM6hz30TJtA8gxL5tFWjpD5iuTs+NNg2MWIAuc MUkOPSFOjkbmvfg6qgPjE7OSlby1Msd1hj9h3Zb783GBV7fDnMykxemNtz+Do17LiF/XDT4KfYY oSmpXwNnicBpjutb3GXDocNzp2i8pmgPDSuETeOWenoF+3JTaQJjWGNnBxTw= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:4cc8:b0:6aa:de29:651 with SMTP id 006d021491bc7-6b6fbcd091cmr14098099eaf.16.1788801421747; Mon, 07 Sep 2026 10:17:01 -0700 (PDT) Date: Mon, 07 Sep 2026 10:17:01 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a9ef18d.6e6c5f9e.240462.0007.GAE@google.com> Subject: Re: [syzbot] [usb?] WARNING in cx231xx_send_vendor_cmd/usb_submit_urb From: syzbot To: jcperdomo100@gmail.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING in cx231xx_send_vendor_cmd/usb_submit_urb ------------[ cut here ]------------ usb 3-1: 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#1: syz.0.17/6418 Modules linked in: CPU: 1 UID: 0 PID: 6418 Comm: syz.0.17 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:ffffc9000348f4f8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888034a58000 RCX: 0000000080000380 RDX: ffff88802a48a140 RSI: ffffffff8cc51920 RDI: ffffffff9087d200 RBP: dffffc0000000000 R08: 00000000000000c0 R09: 0000000000000000 R10: ffffc9000348f5e0 R11: fffff52000691ec8 R12: 1ffff1100694aef0 R13: ffff888034a57780 R14: ffff88802a48a140 R15: 0000000080000380 FS: 00007f7564cae6c0(0000) GS:ffff888124dd6000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff16569d24 CR3: 0000000072d90000 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:2350 i2c_transfer_buffer_flags+0x10d/0x1a0 drivers/i2c/i2c-core-base.c:2378 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: 0033:0x7f7563d9e159 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:00007f7564cae028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007f7564025fa0 RCX: 00007f7563d9e159 RDX: 0000000000000700 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f7563e35024 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f7564026038 R14: 00007f7564025fa0 R15: 00007ffe7bbdb788 ---------------- 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 Tested on: commit: df290809 Linux 7.3-rc2 git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git console output: https://syzkaller.appspot.com/x/log.txt?x=1607e749580000 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 Note: no patches were applied.