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From: syzbot <syzbot+b2be9dd8ca6f6c73ee2d@syzkaller.appspotmail.com>
To: Pavel Skripkin <paskripkin@gmail.com>
Cc: antony.antony@secunet.com, christian.langrock@secunet.com,
	davem@davemloft.net, herbert@gondor.apana.org.au,
	kuba@kernel.org, linux-kernel@vger.kernel.org,
	netdev@vger.kernel.org, paskripkin@gmail.com,
	steffen.klassert@secunet.com, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] UBSAN: shift-out-of-bounds in xfrm_get_default
Date: Wed, 01 Sep 2021 11:56:22 -0700	[thread overview]
Message-ID: <00000000000059938905caf39fce@google.com> (raw)
In-Reply-To: <52d33ff4-5ddc-0103-9312-f75b7e7cb5b6@gmail.com>

> On 8/30/21 23:19, syzbot wrote:
>> Hello,
>> 
>> syzbot found the following issue on:
>> 
>> HEAD commit:    eaf2aaec0be4 Merge tag 'wireless-drivers-next-2021-08-29' ..
>> git tree:       net-next
>> console output: https://syzkaller.appspot.com/x/log.txt?x=1219326d300000
>> kernel config:  https://syzkaller.appspot.com/x/.config?x=d2f9d4c9ff8c5ae7
>> dashboard link: https://syzkaller.appspot.com/bug?extid=b2be9dd8ca6f6c73ee2d
>> compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1
>> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11e6e3a9300000
>> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10de8a6d300000
>> 
>> The issue was bisected to:
>> 
>> commit 2d151d39073aff498358543801fca0f670fea981
>> Author: Steffen Klassert <steffen.klassert@secunet.com>
>> Date:   Sun Jul 18 07:11:06 2021 +0000
>> 
>>      xfrm: Add possibility to set the default to block if we have no policy
>> 
>> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=114523fe300000
>> final oops:     https://syzkaller.appspot.com/x/report.txt?x=134523fe300000
>> console output: https://syzkaller.appspot.com/x/log.txt?x=154523fe300000
>> 
>> IMPORTANT: if you fix the issue, please add the following tag to the commit:
>> Reported-by: syzbot+b2be9dd8ca6f6c73ee2d@syzkaller.appspotmail.com
>> Fixes: 2d151d39073a ("xfrm: Add possibility to set the default to block if we have no policy")
>> 
>> netlink: 172 bytes leftover after parsing attributes in process `syz-executor354'.
>> ================================================================================
>> UBSAN: shift-out-of-bounds in net/xfrm/xfrm_user.c:2010:49
>> shift exponent 224 is too large for 32-bit type 'int'
>
>
> #syz test: git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next.git

want 2 args (repo, branch), got 3

>
>
>
>
> With regards,
> Pavel Skripkin
>
> -- 
> You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@googlegroups.com.
> To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/52d33ff4-5ddc-0103-9312-f75b7e7cb5b6%40gmail.com.

      parent reply	other threads:[~2021-09-01 18:56 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-30 20:19 [syzbot] UBSAN: shift-out-of-bounds in xfrm_get_default syzbot
2021-09-01 18:56 ` Pavel Skripkin
2021-09-01 18:56   ` syzbot
2021-09-01 18:57     ` Pavel Skripkin
2021-09-01 20:15       ` syzbot
2021-09-01 20:21         ` Pavel Skripkin
2021-09-02  2:15           ` syzbot
2021-09-01 18:56   ` syzbot [this message]

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