linux-kernel - Re: BUG: unable to handle kernel paging request in slhc

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Date:   Thu, 05 Dec 2019 12:26:00 -0800
From:   syzbot <syzbot+6c5d567447bfa30f78e2@...kaller.appspotmail.com>
To:     adobriyan@...il.com, akinobu.mita@...il.com,
        akpm@...ux-foundation.org, ben@...adent.org.uk,
        davem@...emloft.net, dvyukov@...gle.com,
        linux-kernel@...r.kernel.org, mhocko@...nel.org,
        netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com,
        tejaswit@...eaurora.org, torvalds@...ux-foundation.org
Subject: Re: BUG: unable to handle kernel paging request in slhc_free

syzbot suspects this bug was fixed by commit:

commit baf76f0c58aec435a3a864075b8f6d8ee5d1f17e
Author: Linus Torvalds <torvalds@...ux-foundation.org>
Date:   Thu Apr 25 23:13:58 2019 +0000

     slip: make slhc_free() silently accept an error pointer

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=114af97ee00000
start commit:   8fe28cb5 Linux 4.20
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=7d581260bae0899a
dashboard link: https://syzkaller.appspot.com/bug?extid=6c5d567447bfa30f78e2
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=136130fd400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1607c563400000

If the result looks correct, please mark the bug fixed by replying with:

#syz fix: slip: make slhc_free() silently accept an error pointer

For information about bisection process see: https://goo.gl/tpsmEJ#bisection