linux-kernel - Re: [syzbot] Monthly lsm report (Sep 2024)

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Message-ID: <b79caa6f-41b9-4169-bb8e-9417611db455@schaufler-ca.com>
Date: Mon, 23 Sep 2024 09:15:23 -0700
From: Casey Schaufler <casey@...aufler-ca.com>
To: Paul Moore <paul@...l-moore.com>, Mimi Zohar <zohar@...ux.ibm.com>,
 Roberto Sassu <roberto.sassu@...wei.com>,
 syzbot <syzbot+listfc277c7cb94932601d96@...kaller.appspotmail.com>
Cc: linux-kernel@...r.kernel.org, linux-security-module@...r.kernel.org,
 syzkaller-bugs@...glegroups.com, Casey Schaufler <casey@...aufler-ca.com>
Subject: Re: [syzbot] Monthly lsm report (Sep 2024)


On 9/23/2024 5:06 AM, Paul Moore wrote:
> On Mon, Sep 23, 2024 at 5:02 AM syzbot
> <syzbot+listfc277c7cb94932601d96@...kaller.appspotmail.com> wrote:
>> Hello lsm maintainers/developers,
>>
>> This is a 31-day syzbot report for the lsm subsystem.
>> All related reports/information can be found at:
>> https://syzkaller.appspot.com/upstream/s/lsm
>>
>> During the period, 0 new issues were detected and 0 were fixed.
>> In total, 4 issues are still open and 27 have been fixed so far.
>>
>> Some of the still happening issues:
>>
>> Ref Crashes Repro Title
>> <1> 306     No    INFO: task hung in process_measurement (2)
>>                   https://syzkaller.appspot.com/bug?extid=1de5a37cb85a2d536330
> Mimi, Roberto,
>
> Any chance this is this related in any way to this report:
>
> https://lore.kernel.org/linux-security-module/CALAgD-4hkHVcCq2ycdwnA2hYDBMqijLUOfZgvf1WfFpU-8+42w@mail.gmail.com/
>
> Looking at the syzkaller dashboard for this issue, it looks like it
> may have been present for some time, just difficult to reproduce
> reliably (although it does appear to be occurring more often
> recently).  Any ideas about a root cause?
>
>> <2> 9       No    general protection fault in smack_inode_permission
>>                   https://syzkaller.appspot.com/bug?extid=4ac565a7081cc43bb185
> Casey?

Looks like an xattr or mount problem in JFS. I will have a look at it.

>
>> <3> 3       Yes   WARNING in current_check_refer_path
>>                   https://syzkaller.appspot.com/bug?extid=34b68f850391452207df
> Based on the discussion over the summer I believe the consensus was
> that this is a bcachefs/VFS bug, reassigning to bcachefs (or trying to
> anyway).
>
> https://lore.kernel.org/all/000000000000a65b35061cffca61@google.com/
>