From: Dmitry Vyukov <dvyukov@google.com>
To: syzbot <syzbot+c613e88b3093ebf3686e@syzkaller.appspotmail.com>
Cc: anant.thazhemadam@gmail.com, bjorn.andersson@linaro.org,
butterflyhuangxx@gmail.com, davem@davemloft.net,
dragonjetli@gmail.com, hdanton@sina.com, kuba@kernel.org,
linux-arm-msm@vger.kernel.org,
linux-kernel-mentees@lists.linuxfoundation.org,
linux-kernel@vger.kernel.org, mani@kernel.org,
manivannan.sadhasivam@linaro.org, masahiroy@kernel.org,
netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] WARNING: refcount bug in qrtr_node_lookup
Date: Mon, 30 Aug 2021 10:39:18 +0200 [thread overview]
Message-ID: <CACT4Y+Z1OG0bPB-bfMRS6vN4Ogx8n3_8v+e+WCshLwz7apvnHg@mail.gmail.com> (raw)
In-Reply-To: <00000000000069bb3e05caa2d1f8@google.com>
On Sat, 28 Aug 2021 at 20:32, syzbot
<syzbot+c613e88b3093ebf3686e@syzkaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit 7e78c597c3ebfd0cb329aa09a838734147e4f117
> Author: Xiaolong Huang <butterflyhuangxx@gmail.com>
> Date: Thu Aug 19 19:50:34 2021 +0000
>
> net: qrtr: fix another OOB Read in qrtr_endpoint_post
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11279a4d300000
> start commit: ba4f184e126b Linux 5.9-rc6
> git tree: upstream
> kernel config: https://syzkaller.appspot.com/x/.config?x=af502ec9a451c9fc
> dashboard link: https://syzkaller.appspot.com/bug?extid=c613e88b3093ebf3686e
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12263dd9900000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13d77603900000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: net: qrtr: fix another OOB Read in qrtr_endpoint_post
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection
Hi Hillf,
You posted some patch related to refcounts. Do you think "net: qrtr:
fix another OOB Read in qrtr_endpoint_post" is a plausible fix? Or is
there still something wrong with refcounts?
WARNING: multiple messages have this Message-ID (diff)
From: Dmitry Vyukov via Linux-kernel-mentees <linux-kernel-mentees@lists.linuxfoundation.org>
To: syzbot <syzbot+c613e88b3093ebf3686e@syzkaller.appspotmail.com>
Cc: anant.thazhemadam@gmail.com, mani@kernel.org,
butterflyhuangxx@gmail.com, linux-arm-msm@vger.kernel.org,
manivannan.sadhasivam@linaro.org,
syzkaller-bugs@googlegroups.com, hdanton@sina.com,
bjorn.andersson@linaro.org, netdev@vger.kernel.org,
dragonjetli@gmail.com, kuba@kernel.org, masahiroy@kernel.org,
linux-kernel-mentees@lists.linuxfoundation.org,
davem@davemloft.net, linux-kernel@vger.kernel.org
Subject: Re: [syzbot] WARNING: refcount bug in qrtr_node_lookup
Date: Mon, 30 Aug 2021 10:39:18 +0200 [thread overview]
Message-ID: <CACT4Y+Z1OG0bPB-bfMRS6vN4Ogx8n3_8v+e+WCshLwz7apvnHg@mail.gmail.com> (raw)
In-Reply-To: <00000000000069bb3e05caa2d1f8@google.com>
On Sat, 28 Aug 2021 at 20:32, syzbot
<syzbot+c613e88b3093ebf3686e@syzkaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit 7e78c597c3ebfd0cb329aa09a838734147e4f117
> Author: Xiaolong Huang <butterflyhuangxx@gmail.com>
> Date: Thu Aug 19 19:50:34 2021 +0000
>
> net: qrtr: fix another OOB Read in qrtr_endpoint_post
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=11279a4d300000
> start commit: ba4f184e126b Linux 5.9-rc6
> git tree: upstream
> kernel config: https://syzkaller.appspot.com/x/.config?x=af502ec9a451c9fc
> dashboard link: https://syzkaller.appspot.com/bug?extid=c613e88b3093ebf3686e
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12263dd9900000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13d77603900000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: net: qrtr: fix another OOB Read in qrtr_endpoint_post
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection
Hi Hillf,
You posted some patch related to refcounts. Do you think "net: qrtr:
fix another OOB Read in qrtr_endpoint_post" is a plausible fix? Or is
there still something wrong with refcounts?
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Linux-kernel-mentees@lists.linuxfoundation.org
https://lists.linuxfoundation.org/mailman/listinfo/linux-kernel-mentees
next prev parent reply other threads:[~2021-08-30 8:39 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-07 21:18 WARNING: refcount bug in qrtr_node_lookup syzbot
2021-08-28 18:32 ` [syzbot] " syzbot
2021-08-28 18:32 ` syzbot
2021-08-30 8:39 ` Dmitry Vyukov [this message]
2021-08-30 8:39 ` Dmitry Vyukov via Linux-kernel-mentees
[not found] <20210901030636.2336-1-hdanton@sina.com>
2021-09-01 3:41 ` syzbot
2021-09-01 4:26 ` Eric Dumazet
[not found] <20210902005238.2413-1-hdanton@sina.com>
2021-09-02 2:32 ` syzbot
[not found] ` <20210902041238.2559-1-hdanton@sina.com>
2021-09-02 13:58 ` Paul Moore
2021-09-03 2:40 ` Paul Moore
[not found] <20210903042820.2733-1-hdanton@sina.com>
2021-09-03 11:04 ` syzbot
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