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AHgh+RrV13r/RGIJJ2x+8Rpo/+EvklYuL/9TIgmTuYEFoBWEVqjr6toaApNmBhLJh3/8L3B4LXlzs0kmjuBItjE=@vger.kernel.org X-Gm-Message-State: AOJu0Ywxgt0zFdXd8teglw91Y+fHUgv/gL4OptWK6bS3hqU6ZoVC65Z3 skxHWOurW6Ion1mloIeEkNs5CQMXSY2DwV/3r299RtWLGf5XBxyaN10MQsZCoO4R5DGzbSMQ6O0 5kPVAZGRnUoCkrCUrS9qy2WgpgqcDEmnj8RvhmZH852coNL4ilILR6upixwE= 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:c183:b0:4b1:9f12:e2f6 with SMTP id 5614622812f47-4b241f24ef7mr17954506b6e.19.1786890518918; Sun, 16 Aug 2026 07:28:38 -0700 (PDT) Date: Sun, 16 Aug 2026 07:28:38 -0700 In-Reply-To: <67710fe1.050a0220.226966.00be.GAE@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6a81c916.f7a79266.2f965f.0014.GAE@google.com> Subject: Re: [syzbot] [usb?] [usb-storage?] WARNING in usb_stor_msg_common/usb_submit_urb From: syzbot To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, stern@rowland.harvard.edu, syzkaller-bugs@googlegroups.com, usb-storage@lists.one-eyed-alien.net Content-Type: text/plain; charset="UTF-8" syzbot has found a reproducer for the following issue on: HEAD commit: 3eb40771c00a Merge tag 'soc-fixes-7.2-3' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16c45a79580000 kernel config: https://syzkaller.appspot.com/x/.config?x=1d67342c314f228d dashboard link: https://syzkaller.appspot.com/bug?extid=73c662df6e55838c6ac6 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10489949580000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+73c662df6e55838c6ac6@syzkaller.appspotmail.com ------------[ cut here ]------------ URB ffff8880225fbd00 submitted while active WARNING: drivers/usb/core/urb.c:379 at usb_submit_urb+0x1689/0x19b0 drivers/usb/core/urb.c:379, CPU#2: usb-storage/6296 Modules linked in: CPU: 2 UID: 0 PID: 6296 Comm: usb-storage 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+0x168c/0x19b0 drivers/usb/core/urb.c:379 Code: 00 48 8b 04 24 48 8b 90 b0 00 00 00 e9 70 ff ff ff bb ed ff ff ff e9 ac f1 ff ff e8 7e 43 8b fa 48 8d 3d c7 22 d0 09 48 89 de <67> 48 0f b9 3a bb f0 ff ff ff e9 8e f1 ff ff c7 44 24 30 00 00 00 RSP: 0018:ffffc900032e76d8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff8880225fbd00 RCX: dffffc0000000000 RDX: ffff88802ac88000 RSI: ffff8880225fbd00 RDI: ffffffff914f52d0 RBP: 1ffff9200065ceee R08: 0000000000000002 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888026bc4fc0 R13: ffff888026bc4f38 R14: ffffc900032e7790 R15: ffff8880225fbd00 FS: 0000000000000000(0000) GS:ffff8880d5dde000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557553ca7660 CR3: 0000000013fa9000 CR4: 0000000000352ef0 Call Trace: usb_stor_msg_common+0x241/0x560 drivers/usb/storage/transport.c:143 usb_stor_bulk_transfer_buf+0x17c/0x420 drivers/usb/storage/transport.c:395 ene_send_scsi_cmd+0x12b/0x610 drivers/usb/storage/ene_ub6250.c:502 ene_init drivers/usb/storage/ene_ub6250.c:2196 [inline] ene_transport+0x2f00/0x3860 drivers/usb/storage/ene_ub6250.c:2310 usb_stor_invoke_transport+0xe7/0x15c0 drivers/usb/storage/transport.c:611 usb_stor_control_thread+0x5e4/0xae0 drivers/usb/storage/usb.c:462 kthread+0x370/0x450 kernel/kthread.c:436 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ---------------- Code disassembly (best guess): 0: 00 48 8b add %cl,-0x75(%rax) 3: 04 24 add $0x24,%al 5: 48 8b 90 b0 00 00 00 mov 0xb0(%rax),%rdx c: e9 70 ff ff ff jmp 0xffffff81 11: bb ed ff ff ff mov $0xffffffed,%ebx 16: e9 ac f1 ff ff jmp 0xfffff1c7 1b: e8 7e 43 8b fa call 0xfa8b439e 20: 48 8d 3d c7 22 d0 09 lea 0x9d022c7(%rip),%rdi # 0x9d022ee 27: 48 89 de mov %rbx,%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: bb f0 ff ff ff mov $0xfffffff0,%ebx 34: e9 8e f1 ff ff jmp 0xfffff1c7 39: c7 .byte 0xc7 3a: 44 24 30 rex.R and $0x30,%al 3d: 00 00 add %al,(%rax) --- 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.