Re: [PATCH] set*uid() must not fail-and-return on OOM/rlimits

From: Solar Designer
Date: Sun Aug 20 2006 - 11:26:36 EST

On Sun, Aug 20, 2006 at 10:26:02AM +0200, Willy Tarreau wrote:
> I'm just wondering why you return a SIGSEGV.

I've taken the SIGSEGV from binfmt_elf.c, where it is used on "Unable to
load interpreter", a condition that commonly occurs on OOM.

> When the kernel kills
> tasks on OOM conditions, it sends either SIGTERM or SIGKILL, as we
> can see here in mm/oom_kill.c:__oom_kill_task() :
> p->flags |= PF_MEMALLOC | PF_MEMDIE;
> /* This process has hardware access, be more careful. */
> if (cap_t(p->cap_effective) & CAP_TO_MASK(CAP_SYS_RAWIO)) {
> force_sig(SIGTERM, p);
> } else {
> force_sig(SIGKILL, p);
> }
> Shouldn't we simply re-use the same code ?

I have no objections.


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