From: Cyril Hrubis <chrubis@suse.cz>
To: Petr Vorel <pvorel@suse.cz>
Cc: Yang Xu <xuyang2018.jy@cn.fujitsu.com>, ltp@lists.linux.it
Subject: Re: [LTP] [PATCH v2 3/4] syscalls/prctl04: Allow rt_sigprocmask in the syscall filter
Date: Tue, 23 Aug 2022 15:24:31 +0200 [thread overview]
Message-ID: <YwTVDy+KY41cx6JS@yuki> (raw)
In-Reply-To: <YwSg3BbsVwGcjlsx@pevik>
Hi!
> > Some libcs (e.g. Musl) call rt_sigprocmask as part of their fork
> > implementation. To successfully call fork, rt_sigprocmask must be allowed
> > as well in the filter.
>
> When tested on lastest update Alpine with 1.2.3 it in both cases fails:
>
> prctl04.c:205: TPASS: SECCOMP_MODE_FILTER doesn't permit exit()
> prctl04.c:207: TFAIL: SECCOMP_MODE_FILTER doesn't permit exit()
>
> What can be wrong?
And does the test work without the patch?
As far as I can tell the change to the bpf is correct and shouldn't
affect anything, it just allows one more syscall to be called.
--
Cyril Hrubis
chrubis@suse.cz
--
Mailing list info: https://lists.linux.it/listinfo/ltp
next prev parent reply other threads:[~2022-08-23 13:22 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-08-22 11:39 [LTP] [PATCH v2 0/4] syscalls: Fix various syscall tests when compiled with Musl Tudor Cretu
2022-08-22 11:39 ` [LTP] [PATCH v2 1/4] lib: Fix initialization of recursive mutex Tudor Cretu
2022-08-23 9:22 ` Petr Vorel
2022-08-22 11:39 ` [LTP] [PATCH v2 2/4] syscalls/mprotect01: Invoke the syscall directly instead of the libc wrapper Tudor Cretu
2022-08-23 9:23 ` Petr Vorel
2022-08-22 11:39 ` [LTP] [PATCH v2 3/4] syscalls/prctl04: Allow rt_sigprocmask in the syscall filter Tudor Cretu
2022-08-23 9:41 ` Petr Vorel
2022-08-23 13:24 ` Cyril Hrubis [this message]
2022-08-23 14:59 ` Tudor Cretu
2022-08-23 15:06 ` Petr Vorel
2022-08-22 11:39 ` [LTP] [PATCH v2 4/4] syscalls/statfs: Accept segfault instead of EFAULT Tudor Cretu
2022-08-22 14:11 ` Cyril Hrubis
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