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fix oops on rmmod capidrv 

Fix overwriting the stack with the version string
(it is currently 10 bytes + zero) when unloading the
capidrv module. Safeguard against overwriting it
should the version string grow in the future.

Should fix Kernel Bug Tracker Bug 9696.

Signed-off-by: Gerd v. Egidy <gerd.von.egidy@intra2net.com>
Acked-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Karsten Keil 2008-01-25 11:55:28 +01:00 committed by Linus Torvalds
parent 49914084e7
commit eb36f4fc01
1 changed files with 5 additions and 4 deletions
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9
drivers/isdn/capi/capidrv.c
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@ -2332,13 +2332,14 @@ static int __init capidrv_init(void)
static void __exit capidrv_exit(void) static void __exit capidrv_exit(void)
{ {
char rev[10]; char rev[32];
char *p; char *p;
if ((p = strchr(revision, ':')) != 0) { if ((p = strchr(revision, ':')) != 0) {
strcpy(rev, p + 1); strncpy(rev, p + 1, sizeof(rev));
p = strchr(rev, '$'); rev[sizeof(rev)-1] = 0;
*p = 0; if ((p = strchr(rev, '$')) != 0)
*p = 0;
} else { } else {
strcpy(rev, " ??? "); strcpy(rev, " ??? ");
} }