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charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: d358e5254674 Merge tag 'for-6.19/dm-changes' of git://git... 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=116b511a580000 kernel config: https://syzkaller.appspot.com/x/.config?x=53f37db573e619b dashboard link: https://syzkaller.appspot.com/bug?extid=67969ab6a2551c27f71b compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=156b511a580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17278d92580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/584561f65dc7/disk-d358e525.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6b9b8f5af8d1/vmlinux-d358e525.xz kernel image: https://storage.googleapis.com/syzbot-assets/b2313fb12366/bzImage-d358e525.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+67969ab6a2551c27f71b@syzkaller.appspotmail.com ------------[ cut here ]------------ URB ffff888114e55c00 submitted while active WARNING: drivers/usb/core/urb.c:380 at 0x0, CPU#0: kworker/0:1/10 Modules linked in: CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted syzkaller #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: events request_firmware_work_func RIP: 0010:usb_submit_urb+0x15a3/0x1970 drivers/usb/core/urb.c:380 Code: 4b 03 00 00 48 8b 04 24 48 8b 90 b0 00 00 00 eb 91 bb ed ff ff ff e9 07 f3 ff ff e8 97 f5 c5 fc 48 8d 3d 50 45 f0 05 48 89 de <67> 48 0f b9 3a bb f0 ff ff ff e9 e9 f2 ff ff e8 79 f5 c5 fc 0f 1f RSP: 0018:ffffc900000af8d0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff888114e55c00 RCX: ffffffff8427b986 RDX: ffff888101ab1d40 RSI: ffff888114e55c00 RDI: ffffffff8aaa3c30 RBP: ffff888114e55c00 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: ffff888101ab27e8 R12: 00000000c0030300 R13: 0000000000000010 R14: ffff888105a92000 R15: ffff88811ecda000 FS: 0000000000000000(0000) GS:ffff888268bf5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056311e50a970 CR3: 0000000114500000 CR4: 00000000003506f0 Call Trace: usb_tx_block+0x241/0x2e0 drivers/net/wireless/marvell/libertas/if_usb.c:436 if_usb_issue_boot_command drivers/net/wireless/marvell/libertas/if_usb.c:766 [inline] if_usb_prog_firmware+0x570/0x10c0 drivers/net/wireless/marvell/libertas/if_usb.c:859 lbs_fw_loaded drivers/net/wireless/marvell/libertas/firmware.c:23 [inline] helper_firmware_cb drivers/net/wireless/marvell/libertas/firmware.c:80 [inline] helper_firmware_cb+0x1f8/0x2e0 drivers/net/wireless/marvell/libertas/firmware.c:64 request_firmware_work_func+0x13c/0x250 drivers/base/firmware_loader/main.c:1152 process_one_work+0x9ba/0x1b20 kernel/workqueue.c:3257 process_scheduled_works kernel/workqueue.c:3340 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3421 kthread+0x3c5/0x780 kernel/kthread.c:463 ret_from_fork+0x74f/0xa30 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 ---------------- Code disassembly (best guess): 0: 4b 03 00 rex.WXB add (%r8),%rax 3: 00 48 8b add %cl,-0x75(%rax) 6: 04 24 add $0x24,%al 8: 48 8b 90 b0 00 00 00 mov 0xb0(%rax),%rdx f: eb 91 jmp 0xffffffa2 11: bb ed ff ff ff mov $0xffffffed,%ebx 16: e9 07 f3 ff ff jmp 0xfffff322 1b: e8 97 f5 c5 fc call 0xfcc5f5b7 20: 48 8d 3d 50 45 f0 05 lea 0x5f04550(%rip),%rdi # 0x5f04577 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 e9 f2 ff ff jmp 0xfffff322 39: e8 79 f5 c5 fc call 0xfcc5f5b7 3e: 0f .byte 0xf 3f: 1f (bad) --- 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