Hello, syzbot found the following crash on: HEAD commit: b3a9e3b9 Linux 5.8-rc1 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=134f82b9100000 kernel config: https://syzkaller.appspot.com/x/.config?x=517257c0c3ef89af dashboard link: https://syzkaller.appspot.com/bug?extid=d625c772c7814faabef9 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1695e621100000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1393f8b9100000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+d625c772c7814faabef9@xxxxxxxxxxxxxxxxxxxxxxxxx WARNING: CPU: 1 PID: 57 at drivers/usb/core/urb.c:478 usb_submit_urb+0x1188/0x1460 drivers/usb/core/urb.c:478 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 57 Comm: kworker/1:2 Not tainted 5.8.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events request_firmware_work_func Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xf6/0x16e lib/dump_stack.c:118 panic+0x2aa/0x6e1 kernel/panic.c:231 __warn.cold+0x2f/0x35 kernel/panic.c:600 report_bug+0x271/0x2f0 lib/bug.c:198 exc_invalid_op+0x1e4/0x370 arch/x86/kernel/traps.c:235 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:563 RIP: 0010:usb_submit_urb+0x1188/0x1460 drivers/usb/core/urb.c:478 Code: 4d 85 ed 74 46 e8 48 96 d0 fd 4c 89 f7 e8 a0 02 16 ff 41 89 d8 44 89 e1 4c 89 ea 48 89 c6 48 c7 c7 80 b3 3d 86 e8 3a ac a4 fd <0f> 0b e9 20 f4 ff ff e8 1c 96 d0 fd 0f 1f 44 00 00 e8 12 96 d0 fd RSP: 0018:ffff8881d8ab7b50 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81298423 RDI: ffffed103b156f5c RBP: ffff8881c8c7e450 R08: ffff8881d8aa1900 R09: ffffed103b665ea2 R10: ffff8881db32f50f R11: ffffed103b665ea1 R12: 0000000000000003 R13: ffff8881c700adc8 R14: ffff8881d8e250a0 R15: ffff8881d54c7700 ath9k_hif_usb_alloc_rx_urbs drivers/net/wireless/ath/ath9k/hif_usb.c:880 [inline] ath9k_hif_usb_alloc_urbs+0x7be/0x1050 drivers/net/wireless/ath/ath9k/hif_usb.c:991 ath9k_hif_usb_dev_init drivers/net/wireless/ath/ath9k/hif_usb.c:1081 [inline] ath9k_hif_usb_firmware_cb+0x148/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1214 request_firmware_work_func+0x126/0x242 drivers/base/firmware_loader/main.c:1001 process_one_work+0x965/0x1620 kernel/workqueue.c:2269 worker_thread+0x96/0xe10 kernel/workqueue.c:2415 kthread+0x352/0x460 kernel/kthread.c:291 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:293 Kernel Offset: disabled --- This bug 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 bug report. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches
