linux-kernel - Re: [syzbot] KASAN: slab-out-of-bounds Write in copy

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Date:   Tue, 20 Dec 2022 12:11:20 -0800
From:   syzbot <syzbot+b1e1f7feb407b56d0355@...kaller.appspotmail.com>
To:     andrii@...nel.org, ast@...nel.org, bpf@...r.kernel.org,
        daniel@...earbox.net, davem@...emloft.net, haoluo@...gle.com,
        hawk@...nel.org, john.fastabend@...il.com, jolsa@...nel.org,
        kpsingh@...nel.org, kuba@...nel.org, linux-kernel@...r.kernel.org,
        llvm@...ts.linux.dev, martin.lau@...ux.dev, nathan@...nel.org,
        ndesaulniers@...gle.com, netdev@...r.kernel.org, sdf@...gle.com,
        song@...nel.org, syzkaller-bugs@...glegroups.com, trix@...hat.com,
        yhs@...com
Subject: Re: [syzbot] KASAN: slab-out-of-bounds Write in copy_array

Hello,

syzbot tried to test the proposed patch but the build/boot failed:

failed to apply patch:
checking file mm/kasan/kasan_test.c
Hunk #1 FAILED at 783.
1 out of 1 hunk FAILED
checking file mm/slab_common.c
Hunk #1 succeeded at 1335 (offset 2 lines).
Hunk #2 succeeded at 1407 (offset 2 lines).
Hunk #3 succeeded at 1415 with fuzz 1 (offset -12 lines).
Hunk #4 succeeded at 1435 (offset -12 lines).



Tested on:

commit:         c35bd4e4 Add linux-next specific files for 20221124
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
dashboard link: https://syzkaller.appspot.com/bug?extid=b1e1f7feb407b56d0355
compiler:       
patch:          https://syzkaller.appspot.com/x/patch.diff?x=17af7bf0480000