From: Rusty Russell <rusty@rustcorp.com.au>
Date: Fri, 25 Sep 2009 06:32:59 +0000 (-0600)
Subject: module: don't call percpu_modfree on NULL pointer.
X-Git-Tag: v2.6.32-rc1~56^2
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ffa9f12a41ec117207e8d953f90b9c179546c8d7;p=pandora-kernel.git

module: don't call percpu_modfree on NULL pointer.

The general one handles NULL, the static obsolescent
(CONFIG_HAVE_LEGACY_PER_CPU_AREA) one in module.c doesn't; Eric's
commit 720eba31 assumed it did, and various frobbings since then kept
that assumption.

All other callers in module.c all protect it with an if; this effectively
does the same as free_init is only goto if we fail percpu_modalloc().

Reported-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Eric Dumazet <dada1@cosmosbay.com>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Américo Wang <xiyou.wangcong@gmail.com>
Tested-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
---

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