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mtd: maps: Eliminate use after free

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Moved the debugging message before the call to map_destroy, which frees its
argument.  The message is also slightly changed to reflect its new
position.

A simplified version of the semantic patch that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression E,E2;
@@

del_mtd_device(E)
...
(
  E = E2
|
* E
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Julia Lawall 2010-04-02 14:47:38 +02:00 committed by David Woodhouse
parent c4e773764c
commit 258006d1ab
1 changed files with 1 additions and 1 deletions
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2
drivers/mtd/maps/pcmciamtd.c
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@ -692,8 +692,8 @@ static void pcmciamtd_detach(struct pcmcia_device *link)
if(dev->mtd_info) {
del_mtd_device(dev->mtd_info);
info("mtd%d: Removing", dev->mtd_info->index);
map_destroy(dev->mtd_info);
info("mtd%d: Removed", dev->mtd_info->index);
}
pcmciamtd_release(link);