From: Tong Zhang <ztong0001@gmail.com>
To: Murphy Zhou <jencce.kernel@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
kernel test robot <lkp@intel.com>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Eric Biederman <ebiederm@xmission.com>,
Kees Cook <keescook@chromium.org>,
Luis Chamberlain <mcgrof@kernel.org>,
Linux-Fsdevel <linux-fsdevel@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
llvm@lists.linux.dev, kbuild-all@lists.01.org,
Linux Memory Management List <linux-mm@kvack.org>
Subject: Re: [PATCH v1] binfmt_misc: fix crash when load/unload module
Date: Tue, 25 Jan 2022 21:23:43 -0800 [thread overview]
Message-ID: <CAA5qM4Btrnp9Te2pm0s=OuDk0ASTE3-LyLt8nf0fXKxhehXUgA@mail.gmail.com> (raw)
In-Reply-To: <CADJHv_vh03bhn1FX2-jc6JoH3Hm6cRiWs+iXFO-coGy_yUY1Mw@mail.gmail.com>
On Tue, Jan 25, 2022 at 9:04 PM Murphy Zhou <jencce.kernel@gmail.com> wrote:
>
> Still panic with this patch on Linux-next tree:
>
> [ 1128.275515] LTP: starting binfmt_misc02 (binfmt_misc02.sh)
> [ 1128.303975] CPU: 1 PID: 107182 Comm: modprobe Kdump: loaded
> Tainted: G W 5.17.0-rc1-next-20220125+ #1
> [ 1128.305264] Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
> [ 1128.305992] Call Trace:
> [ 1128.306376] <TASK>
> [ 1128.306682] dump_stack_lvl+0x34/0x44
> [ 1128.307211] __register_sysctl_table+0x2c7/0x4a0
> [ 1128.307846] ? load_module+0xb37/0xbb0
> [ 1128.308339] ? 0xffffffffc01b6000
> [ 1128.308762] init_misc_binfmt+0x32/0x1000 [binfmt_misc]
> [ 1128.309402] do_one_initcall+0x44/0x200
> [ 1128.309937] ? kmem_cache_alloc_trace+0x163/0x2c0
> [ 1128.310535] do_init_module+0x5c/0x260
> [ 1128.311045] __do_sys_finit_module+0xb4/0x120
> [ 1128.311603] do_syscall_64+0x3b/0x90
> [ 1128.312088] entry_SYSCALL_64_after_hwframe+0x44/0xae
> [ 1128.312755] RIP: 0033:0x7f929ab85fbd
>
> Testing patch on Linus tree.
Hi Murphy,
Did you apply this patch?
Link: https://lkml.kernel.org/r/20220124181812.1869535-2-ztong0001@gmail.com
I tested it on top of the current master branch and it works on my
setup using the reproducer I mentioned.
Could you share your test script?
Thanks,
- Tong
next prev parent reply other threads:[~2022-01-26 5:23 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20220124003342.1457437-1-ztong0001@gmail.com>
2022-01-24 11:40 ` kernel test robot
2022-01-24 23:16 ` Andrew Morton
2022-01-25 18:14 ` Luis Chamberlain
2022-01-26 5:04 ` Murphy Zhou
2022-01-26 5:23 ` Tong Zhang [this message]
2022-01-26 6:33 ` Tong Zhang
2022-01-29 0:25 ` Murphy Zhou
2022-01-24 12:14 ` kernel test robot
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