On Tue, Sep 3, 2019 at 2:08 PM syzbot <syzbot+3b6d4df4497100308c69@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > > Hello, > > syzbot found the following crash on: > > HEAD commit: eea39f24 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=165e551e600000 > kernel config: https://syzkaller.appspot.com/x/.config?x=d0c62209eedfd54e > dashboard link: https://syzkaller.appspot.com/bug?extid=3b6d4df4497100308c69 > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > > Unfortunately, I don't have any reproducer for this crash yet. > > IMPORTANT: if you fix the bug, please add the following tag to the commit: > Reported-by: syzbot+3b6d4df4497100308c69@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: 0 PID: 8426 Comm: syz-executor.3 Not tainted 5.3.0-rc5+ #28 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > RIP: 0010:usb_autopm_put_interface+0x23/0x90 drivers/usb/core/driver.c:1629 > Code: 1f 84 00 00 00 00 00 55 53 48 89 fb 48 83 ec 08 e8 b2 fa ee fd 48 8d > 7b 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 > 42 48 8b 6b 70 e8 6e ec e0 fd 48 ba 00 00 00 00 00 > RSP: 0018:ffff8881cf9e7d98 EFLAGS: 00010202 > RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff84633936 > RDX: 000000000000000e RSI: ffffffff834edf2e RDI: 0000000000000070 > RBP: ffff8881ca020000 R08: ffff8881c7ec0000 R09: ffffed10398ed3bb > R10: ffffed10398ed3ba R11: ffff8881cc769dd7 R12: 0000000000000000 > R13: ffffffff89a84fe8 R14: 0000000000000246 R15: ffff8881c7e13718 > FS: 0000555556d07940(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000001b2ff21000 CR3: 00000001d3e92000 CR4: 00000000001406f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > Call Trace: > usbhid_power+0xb8/0xe0 drivers/hid/usbhid/hid-core.c:1238 > hid_hw_power include/linux/hid.h:1038 [inline] > drop_ref.part.0+0xa5/0xe0 drivers/hid/hidraw.c:338 > drop_ref drivers/hid/hidraw.c:360 [inline] > hidraw_release+0x34f/0x440 drivers/hid/hidraw.c:356 > __fput+0x2d7/0x840 fs/file_table.c:280 > task_work_run+0x13f/0x1c0 kernel/task_work.c:113 > tracehook_notify_resume include/linux/tracehook.h:188 [inline] > exit_to_usermode_loop+0x1d2/0x200 arch/x86/entry/common.c:163 > prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] > syscall_return_slowpath arch/x86/entry/common.c:274 [inline] > do_syscall_64+0x45f/0x580 arch/x86/entry/common.c:299 > entry_SYSCALL_64_after_hwframe+0x49/0xbe > RIP: 0033:0x413561 > Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 > 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 > 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 > RSP: 002b:00007ffd906f2400 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 > RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000413561 > RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 > RBP: 0000000000000001 R08: 0000000055395a94 R09: 0000000055395a98 > R10: 00007ffd906f24e0 R11: 0000000000000293 R12: 000000000075bf20 > R13: 000000000006c6a9 R14: 0000000000764788 R15: ffffffffffffffff > Modules linked in: > ---[ end trace 4e657ab43d479d9c ]--- > RIP: 0010:usb_autopm_put_interface+0x23/0x90 drivers/usb/core/driver.c:1629 > Code: 1f 84 00 00 00 00 00 55 53 48 89 fb 48 83 ec 08 e8 b2 fa ee fd 48 8d > 7b 70 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 > 42 48 8b 6b 70 e8 6e ec e0 fd 48 ba 00 00 00 00 00 > RSP: 0018:ffff8881cf9e7d98 EFLAGS: 00010202 > RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff84633936 > RDX: 000000000000000e RSI: ffffffff834edf2e RDI: 0000000000000070 > RBP: ffff8881ca020000 R08: ffff8881c7ec0000 R09: ffffed10398ed3bb > R10: ffffed10398ed3ba R11: ffff8881cc769dd7 R12: 0000000000000000 > R13: ffffffff89a84fe8 R14: 0000000000000246 R15: ffff8881c7e13718 > FS: 0000555556d07940(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 0000001b2ff21000 CR3: 00000001d3e92000 CR4: 00000000001406f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 > > > --- > 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. #syz dup: general protection fault in __pm_runtime_resume
