On Mon, Feb 10, 2020 at 1:46 PM Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> wrote: > > On 2020/02/10 19:09, Dmitry Vyukov wrote: > > You may also try on the exact commit the bug was reported, because > > usb-fuzzer is tracking branch, things may change there. > > OK. I explicitly tried > > #syz test: https://github.com/google/kasan.git e5cd56e94edde38ca4dafae5a450c5a16b8a5f23 > > but syzbot still cannot reproduce this bug using the reproducer... > > On 2020/02/10 21:02, syzbot wrote: > > Hello, > > > > syzbot has tested the proposed patch and the reproducer did not trigger crash: > > > > Reported-and-tested-by: syzbot+854768b99f19e89d7f81@xxxxxxxxxxxxxxxxxxxxxxxxx > > > > Tested on: > > > > commit: e5cd56e9 usb: gadget: add raw-gadget interface > > git tree: https://github.com/google/kasan.git > > kernel config: https://syzkaller.appspot.com/x/.config?x=c372cdb7140fc162 > > dashboard link: https://syzkaller.appspot.com/bug?extid=854768b99f19e89d7f81 > > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > > > > Note: testing is done by a robot and is best-effort only. > > > > Anyway, I'm just suspecting that we are forgetting to wake up all waiters > after clearing WDM_IN_USE bit because sometimes multiple threads are reported > as hung. > > On 2020/02/10 15:27, syzbot wrote: > > Hello, > > > > syzbot has tested the proposed patch and the reproducer did not trigger crash: > > > > Reported-and-tested-by: syzbot+854768b99f19e89d7f81@xxxxxxxxxxxxxxxxxxxxxxxxx > > > > Tested on: > > > > commit: e5cd56e9 usb: gadget: add raw-gadget interface > > git tree: https://github.com/google/kasan.git usb-fuzzer > > kernel config: https://syzkaller.appspot.com/x/.config?x=c372cdb7140fc162 > > dashboard link: https://syzkaller.appspot.com/bug?extid=854768b99f19e89d7f81 > > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > > patch: https://syzkaller.appspot.com/x/patch.diff?x=117c3ae9e00000 > > > > Note: testing is done by a robot and is best-effort only. > > > > On 2020/02/10 15:55, syzbot wrote: > > Hello, > > > > syzbot has tested the proposed patch and the reproducer did not trigger crash: > > > > Reported-and-tested-by: syzbot+854768b99f19e89d7f81@xxxxxxxxxxxxxxxxxxxxxxxxx > > > > Tested on: > > > > commit: e5cd56e9 usb: gadget: add raw-gadget interface > > git tree: https://github.com/google/kasan.git usb-fuzzer > > kernel config: https://syzkaller.appspot.com/x/.config?x=c372cdb7140fc162 > > dashboard link: https://syzkaller.appspot.com/bug?extid=854768b99f19e89d7f81 > > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > > patch: https://syzkaller.appspot.com/x/patch.diff?x=13b3f6e9e00000 > > > > Note: testing is done by a robot and is best-effort only. > > > > On 2020/02/10 16:21, syzbot wrote: > > Hello, > > > > syzbot has tested the proposed patch and the reproducer did not trigger crash: > > > > Reported-and-tested-by: syzbot+854768b99f19e89d7f81@xxxxxxxxxxxxxxxxxxxxxxxxx > > > > Tested on: > > > > commit: e5cd56e9 usb: gadget: add raw-gadget interface > > git tree: https://github.com/google/kasan.git usb-fuzzer > > kernel config: https://syzkaller.appspot.com/x/.config?x=c372cdb7140fc162 > > dashboard link: https://syzkaller.appspot.com/bug?extid=854768b99f19e89d7f81 > > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > > patch: https://syzkaller.appspot.com/x/patch.diff?x=115026b5e00000 > > > > Note: testing is done by a robot and is best-effort only. > > > > On 2020/02/10 16:44, syzbot wrote: > > Hello, > > > > syzbot has tested the proposed patch and the reproducer did not trigger crash: > > > > Reported-and-tested-by: syzbot+854768b99f19e89d7f81@xxxxxxxxxxxxxxxxxxxxxxxxx > > > > Tested on: > > > > commit: e5cd56e9 usb: gadget: add raw-gadget interface > > git tree: https://github.com/google/kasan.git usb-fuzzer > > kernel config: https://syzkaller.appspot.com/x/.config?x=c372cdb7140fc162 > > dashboard link: https://syzkaller.appspot.com/bug?extid=854768b99f19e89d7f81 > > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > > patch: https://syzkaller.appspot.com/x/patch.diff?x=17285431e00000 > > > > Note: testing is done by a robot and is best-effort only. > > > > On 2020/02/10 17:05, syzbot wrote: > > Hello, > > > > syzbot has tested the proposed patch and the reproducer did not trigger crash: > > > > Reported-and-tested-by: syzbot+854768b99f19e89d7f81@xxxxxxxxxxxxxxxxxxxxxxxxx > > > > Tested on: > > > > commit: e5cd56e9 usb: gadget: add raw-gadget interface > > git tree: https://github.com/google/kasan.git usb-fuzzer > > kernel config: https://syzkaller.appspot.com/x/.config?x=c372cdb7140fc162 > > dashboard link: https://syzkaller.appspot.com/bug?extid=854768b99f19e89d7f81 > > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > > > > Note: testing is done by a robot and is best-effort only. On Mon, Feb 10, 2020 at 4:03 PM Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx> wrote: > > On 2020/02/10 21:46, Tetsuo Handa wrote: > > On 2020/02/10 19:09, Dmitry Vyukov wrote: > >> You may also try on the exact commit the bug was reported, because > >> usb-fuzzer is tracking branch, things may change there. > > > > OK. I explicitly tried > > > > #syz test: https://github.com/google/kasan.git e5cd56e94edde38ca4dafae5a450c5a16b8a5f23 > > > > but syzbot still cannot reproduce this bug using the reproducer... > > It seems that there is non-trivial difference between kernel config in dashboard > and kernel config in "syz test:" mails. Maybe that's the cause...
