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Re: [PATCH] [BZ 17542] sunrpc: conditional jump depends on uninitialised value in svc_getreq_common

From: Siddhesh Poyarekar <siddhesh at redhat dot com>
To: Andreas Schwab <schwab at suse dot de>
Cc: Brad Hubbard <bhubbard at redhat dot com>, OndÅej BÃlka <neleai at seznam dot cz>, libc-alpha at sourceware dot org
Date: Wed, 10 Dec 2014 14:06:45 +0530
Subject: Re: [PATCH] [BZ 17542] sunrpc: conditional jump depends on uninitialised value in svc_getreq_common
Authentication-results: sourceware.org; auth=none
References: <54597868 dot 3060408 at redhat dot com> <mvmr3xif28d dot fsf at hawking dot suse dot de> <20141105091434 dot GJ17703 at spoyarek dot pnq dot redhat dot com> <20141209223328 dot GA4523 at domone> <54877C34 dot 8040007 at redhat dot com> <20141210073828 dot GZ19849 at spoyarek dot pnq dot redhat dot com> <mvm8uifx64t dot fsf at hawking dot suse dot de>

On Wed, Dec 10, 2014 at 09:26:26AM +0100, Andreas Schwab wrote:
> We should first understand what is the real bug.

The real bug is in the calling application, which calls svc_getreq on
a file descriptor that it did not register.  We're patching this in
sunrpc so that the check in svc_getreq_common below that was supposed
to catch such conditions actually works.

...
  xprt = xports[fd];
  /* Do we control fd? */
  if (xprt == NULL)
     return;
...

Siddhesh

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References:
- Re: [PATCH] [BZ 17542] sunrpc: conditional jump depends on uninitialised value in svc_getreq_common
  - From: OndÅej BÃlka
- Re: [PATCH] [BZ 17542] sunrpc: conditional jump depends on uninitialised value in svc_getreq_common
  - From: Brad Hubbard
- Re: [PATCH] [BZ 17542] sunrpc: conditional jump depends on uninitialised value in svc_getreq_common
  - From: Siddhesh Poyarekar
- Re: [PATCH] [BZ 17542] sunrpc: conditional jump depends on uninitialised value in svc_getreq_common
  - From: Andreas Schwab

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