Re: BUG: unable to handle kernel paging request in pcpu_alloc

[syzbot]

syzbot has bisected this bug to:

commit 0609ae011deb41c9629b7f5fd626dfa1ac9d16b0
Author: Daniel Axtens <dja@xxxxxxxxxx>
Date:   Sun Dec 1 01:55:00 2019 +0000

    x86/kasan: support KASAN_VMALLOC

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=166cf97ee00000
start commit:   1ab75b2e Add linux-next specific files for 20191203
git tree:       linux-next
final crash:    https://syzkaller.appspot.com/x/report.txt?x=156cf97ee00000
console output: https://syzkaller.appspot.com/x/log.txt?x=116cf97ee00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=de1505c727f0ec20
dashboard link: https://syzkaller.appspot.com/bug?extid=82e323920b78d54aaed5
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=156ef061e00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11641edae00000

Reported-by: syzbot+82e323920b78d54aaed5@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 0609ae011deb ("x86/kasan: support KASAN_VMALLOC")

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