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AKwUvBzSDYMkiE8krDMBDY/ehaFxB1uLt/IvyqPnPcz8NU1IuD/zl1Bk/Hxd/K05m7kpSSylZMBCvstEZc4dSIQ=@vger.kernel.org X-Gm-Message-State: AFq9FYLycdOoqmi8Cptz/SbCk7xZfoYNzVk8CX0gmtPpXTSQ4RvlUUwk D7YLYxu4/g8DdFb8UcDYv6ace3soiw0JC+xxIMi1mEFG66NjT/Gu7PElGYkKpHh7WhfnzRK7j75 tQjODpw2TptmgHhu5LhXIv4CTfdiohuF42e4s0iU8Zn1tM8hEr0Bj/NNGKSs= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6808:124b:b0:4f8:4ec9:b170 with SMTP id 5614622812f47-53cc6b00eb3mr4123719b6e.2.1792340308836; Sun, 18 Oct 2026 09:18:28 -0700 (PDT) Date: Sun, 18 Oct 2026 09:18:28 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6ad4f154.a6d1a155.34a93f.00b5.GAE@google.com> Subject: [syzbot] [usb?] WARNING in ec168_ctrl_msg/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: 4056b3c9d3c9 Merge tag 'nios2_update_for_v7.4' of git://gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11370ce1580000 kernel config: https://syzkaller.appspot.com/x/.config?x=7d1b274ca9837366 dashboard link: https://syzkaller.appspot.com/bug?extid=ed3ada41c4eb1c4ab78e 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=114faaea580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=154faaea580000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-4056b3c9.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/811a43c89106/vmlinux-4056b3c9.xz kernel image: https://storage.googleapis.com/syzbot-assets/2bb4f3abea76/bzImage-4056b3c9.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ed3ada41c4eb1c4ab78e@syzkaller.appspotmail.com ------------[ cut here ]------------ usb 5-1: BOGUS control dir, pipe 80000280 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.0.17/5521 Modules linked in: CPU: 0 UID: 0 PID: 5521 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 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: 0000:ffffc9000228f8d8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff888044085800 RCX: 0000000080000280 RDX: ffff88801317fa20 RSI: ffffffff8cc57b40 RDI: ffffffff91885110 RBP: dffffc0000000000 R08: 00000000000000c0 R09: 0000000000000000 R10: ffffc9000228f9c0 R11: fffff52000451f44 R12: 1ffff11003c397d4 R13: ffff88801e1cbea0 R14: ffff88801317fa20 R15: 0000000080000280 FS: 0000555560660500(0000) GS:ffff88808b0b4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1c3f68e000 CR3: 00000000440b1000 CR4: 0000000000352ef0 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 ec168_ctrl_msg+0x308/0x7c0 drivers/media/usb/dvb-usb-v2/ec168.c:73 ec168_i2c_xfer+0x10e/0x630 drivers/media/usb/dvb-usb-v2/ec168.c:127 __i2c_transfer+0x7bf/0x1fe0 drivers/i2c/i2c-core-base.c:-1 i2c_transfer+0x1cb/0x2d0 drivers/i2c/i2c-core-base.c:2350 i2cdev_ioctl_rdwr+0x460/0x740 drivers/i2c/i2c-dev.c:306 i2cdev_ioctl+0x6a5/0x880 drivers/i2c/i2c-dev.c:467 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 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: 0033:0x7fa9f059e559 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:00007ffd4b173ed8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fa9f0825fa0 RCX: 00007fa9f059e559 RDX: 0000200000000200 RSI: 0000000000000707 RDI: 0000000000000004 RBP: 00007fa9f06358b0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fa9f0825fac R14: 00007fa9f0825fa0 R15: 00007fa9f0825fa0 ---------------- 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