Messages in this thread | | | Date | Sat, 12 Sep 2020 10:52:52 -0700 | From | Kees Cook <> | Subject | Re: WARNING in syscall_exit_to_user_mode |
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On Fri, Sep 11, 2020 at 03:39:19AM -0700, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: f4d51dff Linux 5.9-rc4 > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=12a4e7cd900000 > kernel config: https://syzkaller.appspot.com/x/.config?x=a9075b36a6ae26c9 > dashboard link: https://syzkaller.appspot.com/bug?extid=7ffc7214b893651d52b8 > compiler: gcc (GCC) 10.1.0-syz 20200507 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=122d7335900000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13cea1a5900000 > > Bisection is inconclusive: the issue happens on the oldest tested release. > > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=162247cd900000 > final oops: https://syzkaller.appspot.com/x/report.txt?x=152247cd900000 > console output: https://syzkaller.appspot.com/x/log.txt?x=112247cd900000 > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+7ffc7214b893651d52b8@syzkaller.appspotmail.com > > ------------[ cut here ]------------ > syscall 56 left IRQs disabled
This WARN appears reachable. :)
I also see on the dashboard these other problems with the new entry code:
https://syzkaller.appspot.com/bug?extid=d4336c84ed0099fdbe47 https://syzkaller.appspot.com/bug?extid=c4af95386364bc59b13e
I can't tell if any of these have been looked at yet, though.
-- Kees Cook
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