linux-kernel - Re: [syzbot] WARNING: kmalloc bug in bpf

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Message-ID: <000000000000ec946105dd42bcd6@google.com>
Date:   Fri, 22 Apr 2022 11:53:10 -0700
From:   syzbot <syzbot+cecf5b7071a0dfb76530@...kaller.appspotmail.com>
To:     andrii@...nel.org, ast@...nel.org, bpf@...r.kernel.org,
        daniel@...earbox.net, davem@...emloft.net, hawk@...nel.org,
        jiri@...dia.com, john.fastabend@...il.com, kafai@...com,
        kpsingh@...nel.org, kuba@...nel.org, leonro@...dia.com,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
        songliubraving@...com, syzkaller-bugs@...glegroups.com,
        torvalds@...ux-foundation.org, yhs@...com
Subject: Re: [syzbot] WARNING: kmalloc bug in bpf

syzbot suspects this issue was fixed by commit:

commit 0708a0afe291bdfe1386d74d5ec1f0c27e8b9168
Author: Daniel Borkmann <daniel@...earbox.net>
Date:   Fri Mar 4 14:26:32 2022 +0000

    mm: Consider __GFP_NOWARN flag for oversized kvmalloc() calls

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1499c6fcf00000
start commit:   1d5a47424040 sfc: The RX page_ring is optional
git tree:       net
kernel config:  https://syzkaller.appspot.com/x/.config?x=1a86c22260afac2f
dashboard link: https://syzkaller.appspot.com/bug?extid=cecf5b7071a0dfb76530
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=176738e7b00000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=13b4508db00000

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

#syz fix: mm: Consider __GFP_NOWARN flag for oversized kvmalloc() calls

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