syzbot has bisected this issue to:
commit bdbfb1d52d5e576c1d275fd8ab59b677011229e8
Author: Ingo Molnar <mingo@xxxxxxxxxx>
Date: Sun Jun 7 19:12:51 2020 +0000
Revert "mm/vmalloc: modify struct vmap_area to reduce its size"
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=166e6b7f100000
start commit: ab8be66e Add linux-next specific files for 20200720
git tree: linux-next
final oops: https://syzkaller.appspot.com/x/report.txt?x=156e6b7f100000
console output: https://syzkaller.appspot.com/x/log.txt?x=116e6b7f100000
kernel config: https://syzkaller.appspot.com/x/.config?x=c4bf77d63d0cf88c
dashboard link: https://syzkaller.appspot.com/bug?extid=5f326d255ca648131f87
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=151192bb100000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12d7a873100000
Reported-by: syzbot+5f326d255ca648131f87@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: bdbfb1d52d5e ("Revert "mm/vmalloc: modify struct vmap_area to reduce its size"")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
