netdev - Re: [syzbot] WARNING: kmalloc bug in bpf

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Message-ID: <000000000000f032a605cb450801@google.com>
Date:   Sun, 05 Sep 2021 13:04:06 -0700
From:   syzbot <syzbot+f3e749d4c662818ae439@...kaller.appspotmail.com>
To:     akpm@...ux-foundation.org, andrii@...nel.org, ast@...nel.org,
        bpf@...r.kernel.org, clang-built-linux@...glegroups.com,
        daniel@...earbox.net, davem@...emloft.net, eric.dumazet@...il.com,
        hawk@...nel.org, john.fastabend@...il.com, kafai@...com,
        kpsingh@...nel.org, kuba@...nel.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, nathan@...nel.org, ndesaulniers@...gle.com,
        netdev@...r.kernel.org, songliubraving@...com,
        syzkaller-bugs@...glegroups.com, torvalds@...ux-foundation.org,
        w@....eu, yhs@...com
Subject: Re: [syzbot] WARNING: kmalloc bug in bpf_check

syzbot has bisected this issue to:

commit 7661809d493b426e979f39ab512e3adf41fbcc69
Author: Linus Torvalds <torvalds@...ux-foundation.org>
Date:   Wed Jul 14 16:45:49 2021 +0000

    mm: don't allow oversized kvmalloc() calls

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=13136b83300000
start commit:   a9c9a6f741cd Merge tag 'scsi-misc' of git://git.kernel.org..
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=10936b83300000
console output: https://syzkaller.appspot.com/x/log.txt?x=17136b83300000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c84ed2c3f57ace
dashboard link: https://syzkaller.appspot.com/bug?extid=f3e749d4c662818ae439
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11e4cdf5300000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=14ef3b33300000

Reported-by: syzbot+f3e749d4c662818ae439@...kaller.appspotmail.com
Fixes: 7661809d493b ("mm: don't allow oversized kvmalloc() calls")

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