Re: KASAN: use-after-free Read in corrupted (3)

From: syzbot
Date: Wed Jun 26 2019 - 19:55:03 EST


syzbot has bisected this bug to:

commit e9db4ef6bf4ca9894bb324c76e01b8f1a16b2650
Author: John Fastabend <john.fastabend@xxxxxxxxx>
Date: Sat Jun 30 13:17:47 2018 +0000

bpf: sockhash fix omitted bucket lock in sock_close

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11bb4e3da00000
start commit: 045df37e Merge branch 'cxgb4-Reference-count-MPS-TCAM-entr..
git tree: net-next
final crash: https://syzkaller.appspot.com/x/report.txt?x=13bb4e3da00000
console output: https://syzkaller.appspot.com/x/log.txt?x=15bb4e3da00000
kernel config: https://syzkaller.appspot.com/x/.config?x=dd16b8dc9d0d210c
dashboard link: https://syzkaller.appspot.com/bug?extid=8a821b383523654227bf
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1389f5b5a00000

Reported-by: syzbot+8a821b383523654227bf@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: e9db4ef6bf4c ("bpf: sockhash fix omitted bucket lock in sock_close")

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