On Tue, Jul 9, 2019 at 2:27 PM syzbot <syzbot+646272341e25afebff05@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > Hello, > > syzbot found the following crash on: > > HEAD commit: 7829a896 usb-fuzzer: main usb gadget fuzzer driver > git tree: https://github.com/google/kasan.git usb-fuzzer > console output: https://syzkaller.appspot.com/x/log.txt?x=1321f9a3a00000 > kernel config: https://syzkaller.appspot.com/x/.config?x=f6d4561982f71f63 > dashboard link: https://syzkaller.appspot.com/bug?extid=646272341e25afebff05 > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12ac261ba00000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=171d6739a00000 > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+646272341e25afebff05@xxxxxxxxxxxxxxxxxxxxxxxxx > > kasan: CONFIG_KASAN_INLINE enabled > kasan: GPF could be caused by NULL-ptr deref or user memory access > general protection fault: 0000 [#1] SMP KASAN > CPU: 1 PID: 1878 Comm: v4l_id Not tainted 5.2.0-rc6+ #13 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > RIP: 0010:usb_make_path include/linux/usb.h:913 [inline] > RIP: 0010:vidioc_querycap+0x12d/0x3e0 > drivers/media/usb/usbvision/usbvision-video.c:461 > Code: 3c 02 00 0f 85 ba 02 00 00 49 8b ac 24 58 16 00 00 48 b8 00 00 00 00 > 00 fc ff df 48 8d 7d 48 4c 8d 45 04 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f > 85 7d 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b > RSP: 0018:ffff8881cc727a28 EFLAGS: 00010206 > RAX: dffffc0000000000 RBX: ffff8881cc727c20 RCX: 0000000000000000 > RDX: 0000000000000009 RSI: 451f481f4b404f27 RDI: 0000000000000048 > RBP: 0000000000000000 R08: 0000000000000004 R09: fffffbfff0c9ba38 > R10: fffffbfff0c9ba37 R11: ffffffff864dd1b8 R12: ffff8881cc9aa100 > R13: ffff8881cc9ab804 R14: ffff8881cc9aa998 R15: ffff8881cc727c50 > FS: 00007f579210f700(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000000625208 CR3: 00000001cd192000 CR4: 00000000001406e0 > Call Trace: > v4l_querycap+0x121/0x340 drivers/media/v4l2-core/v4l2-ioctl.c:1058 > __video_do_ioctl+0x5b0/0xb30 drivers/media/v4l2-core/v4l2-ioctl.c:2871 > video_usercopy+0x446/0xee0 drivers/media/v4l2-core/v4l2-ioctl.c:3053 > v4l2_ioctl+0x147/0x1a0 drivers/media/v4l2-core/v4l2-dev.c:360 > vfs_ioctl fs/ioctl.c:46 [inline] > file_ioctl fs/ioctl.c:509 [inline] > do_vfs_ioctl+0xcda/0x12e0 fs/ioctl.c:696 > ksys_ioctl+0x9b/0xc0 fs/ioctl.c:713 > __do_sys_ioctl fs/ioctl.c:720 [inline] > __se_sys_ioctl fs/ioctl.c:718 [inline] > __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:718 > do_syscall_64+0xb7/0x560 arch/x86/entry/common.c:301 > entry_SYSCALL_64_after_hwframe+0x49/0xbe > RIP: 0033:0x7f5791c42347 > Code: 90 90 90 48 8b 05 f1 fa 2a 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff > ff c3 90 90 90 90 90 90 90 90 90 90 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff > ff 73 01 c3 48 8b 0d c1 fa 2a 00 31 d2 48 29 c2 64 > RSP: 002b:00007ffced1878d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000010 > RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f5791c42347 > RDX: 00007ffced1878e0 RSI: 0000000080685600 RDI: 0000000000000003 > RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000400884 > R13: 00007ffced187a30 R14: 0000000000000000 R15: 0000000000000000 > Modules linked in: > ---[ end trace 5550531bc37b28bc ]--- > RIP: 0010:usb_make_path include/linux/usb.h:913 [inline] > RIP: 0010:vidioc_querycap+0x12d/0x3e0 > drivers/media/usb/usbvision/usbvision-video.c:461 > Code: 3c 02 00 0f 85 ba 02 00 00 49 8b ac 24 58 16 00 00 48 b8 00 00 00 00 > 00 fc ff df 48 8d 7d 48 4c 8d 45 04 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f > 85 7d 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b > RSP: 0018:ffff8881cc727a28 EFLAGS: 00010206 > RAX: dffffc0000000000 RBX: ffff8881cc727c20 RCX: 0000000000000000 > RDX: 0000000000000009 RSI: 451f481f4b404f27 RDI: 0000000000000048 > RBP: 0000000000000000 R08: 0000000000000004 R09: fffffbfff0c9ba38 > R10: fffffbfff0c9ba37 R11: ffffffff864dd1b8 R12: ffff8881cc9aa100 > R13: ffff8881cc9ab804 R14: ffff8881cc9aa998 R15: ffff8881cc727c50 > FS: 00007f579210f700(0000) GS:ffff8881db300000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000000000625208 CR3: 00000001cd192000 CR4: 00000000001406e0 > > > --- > 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 Closing old USB bugs that haven't happened for a long time. #syz invalid
