Hello, syzbot found the following issue on: HEAD commit: 4dce3b375179 usb/hcd: Fix dma_map_sg error check git tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing console output: https://syzkaller.appspot.com/x/log.txt?x=10d30033080000 kernel config: https://syzkaller.appspot.com/x/.config?x=3cb39b084894e9a5 dashboard link: https://syzkaller.appspot.com/bug?extid=d39fd48d595c37317338 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d39fd48d595c37317338@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: CPU: 1 PID: 268 at kernel/locking/mutex.c:582 __mutex_lock_common kernel/locking/mutex.c:582 [inline] WARNING: CPU: 1 PID: 268 at kernel/locking/mutex.c:582 __mutex_lock+0xa01/0x1350 kernel/locking/mutex.c:747 Modules linked in: CPU: 1 PID: 268 Comm: kworker/u4:1 Not tainted 6.0.0-rc1-syzkaller-00028-g4dce3b375179 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:582 [inline] RIP: 0010:__mutex_lock+0xa01/0x1350 kernel/locking/mutex.c:747 --- 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@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.