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Re: port-sparc/54734 (sparc panics running ATF tests)
The following reply was made to PR port-sparc/54734; it has been noted by GNATS.
From: Kamil Rytarowski <n54%gmx.com@localhost>
To: Martin Husemann <martin%duskware.de@localhost>,
Subject: Re: port-sparc/54734 (sparc panics running ATF tests)
Date: Sat, 25 Jan 2020 18:40:33 +0100
On 25.01.2020 10:36, Martin Husemann wrote:
> On Fri, Jan 24, 2020 at 10:05:01PM +0000, Kamil Rytarowski wrote:
> That change is fine, is it enough to fix that panic?
It should be everything.
> Two notes:
> - we need the same in sparc64/sparc64/process_machdep.c (not sure why
> that didn't show up in test runs so far)
In theory every alignment sensitive port is endangered.
In theory just using PTRACE_REG_SET_PC() might not be enough to trigger
a panic on a certain port.
> - in process_write_regs() we should also verify that npc !=3D pc
> (or force npc to be pc + 4 if it isn't)
If there is just triggered a crash signal that kills the child process
but not the kernel, we could ignore it in the kernel.
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