From: Mike Frysinger <vapier@gentoo.org>
To: sparclinux@vger.kernel.org
Subject: Re: using ptrace to cancel a syscall on sparc
Date: Tue, 19 Jan 2016 20:56:08 +0000 [thread overview]
Message-ID: <20160119205608.GH14840@vapier.lan> (raw)
In-Reply-To: <20151220054754.GZ11489@vapier.lan>
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On 19 Jan 2016 15:10, David Miller wrote:
> From: Mike Frysinger <vapier@gentoo.org>
> Date: Mon, 18 Jan 2016 06:32:30 -0500
>
> > looks like the bug is in arch/sparc/kernel/syscalls.S:linux_syscall_trace32
> > (and linux_syscall_trace). they don't reload the args from the pt_regs
> > struct after calling syscall_trace_enter. i put in a small hack:
>
> Mike, please give this patch a test, thanks!
it fixes my reduced test case, and seems to fix my original testcase
(a program that uses ptrace to monitor fs behavior in static progs).
thanks !
Tested-by: Mike Frysinger <vapier@gentoo.org>
-mike
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prev parent reply other threads:[~2016-01-19 20:56 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-20 5:47 using ptrace to cancel a syscall on sparc Mike Frysinger
2015-12-20 23:31 ` Dmitry V. Levin
2016-01-18 11:32 ` Mike Frysinger
2016-01-19 19:39 ` David Miller
2016-01-19 20:10 ` David Miller
2016-01-19 20:56 ` Mike Frysinger [this message]
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