Re: BUG: unable to handle kernel paging request in free_block (5)

Re: BUG: unable to handle kernel paging request in free_block (5)

[syzbot]

syzbot has bisected this bug to:

commit 52dfae5c85a4c1078e9f1d5e8947d4a25f73dd81
Author: Jon Maloy <jon.maloy@ericsson.com>
Date:   Thu Mar 22 19:42:52 2018 +0000

     tipc: obtain node identity from interface by default

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15065bdd200000
start commit:   e6986423 socket: fix compat SO_RCVTIMEO_NEW/SO_SNDTIMEO_NEW
git tree:       net
final crash:    https://syzkaller.appspot.com/x/report.txt?x=17065bdd200000
console output: https://syzkaller.appspot.com/x/log.txt?x=13065bdd200000
kernel config:  https://syzkaller.appspot.com/x/.config?x=4fb64439e07a1ec0
dashboard link: https://syzkaller.appspot.com/bug?extid=438a5abd4f53adb1c073
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12adddbf200000

Reported-by: syzbot+438a5abd4f53adb1c073@syzkaller.appspotmail.com
Fixes: 52dfae5c85a4 ("tipc: obtain node identity from interface by default")

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

Re: BUG: unable to handle kernel paging request in free_block (5)

[syzbot]

syzbot suspects this issue was fixed by commit:

commit 1378817486d6860f6a927f573491afe65287abf1
Author: Eric Dumazet <edumazet@google.com>
Date:   Thu May 21 18:29:58 2020 +0000

    tipc: block BH before using dst_cache

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1537694a900000
start commit:   e6986423 socket: fix compat SO_RCVTIMEO_NEW/SO_SNDTIMEO_NEW
git tree:       net
kernel config:  https://syzkaller.appspot.com/x/.config?x=4fb64439e07a1ec0
dashboard link: https://syzkaller.appspot.com/bug?extid=438a5abd4f53adb1c073
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12adddbf200000

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

#syz fix: tipc: block BH before using dst_cache

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