diff options
| author | Andrew Tridgell <tridge@samba.org> | 2010-09-16 20:11:47 +1000 |
|---|---|---|
| committer | Andrew Tridgell <tridge@samba.org> | 2010-09-16 21:09:17 +1000 |
| commit | a16328449171c1138bce3a9f32b7c1fa211e58d2 (patch) | |
| tree | 203bd96df1cbef6123b9f2e073c3582782ac05b3 /nsswitch | |
| parent | ff515ff4772a555facce75eead91ceff271713f5 (diff) | |
| download | samba-a16328449171c1138bce3a9f32b7c1fa211e58d2.tar.gz samba-a16328449171c1138bce3a9f32b7c1fa211e58d2.tar.xz samba-a16328449171c1138bce3a9f32b7c1fa211e58d2.zip | |
wbclient: paranoid check for double free
added while tracking down a crash in the wbinfo blackbox test
Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
Diffstat (limited to 'nsswitch')
| -rw-r--r-- | nsswitch/libwbclient/wbclient.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/nsswitch/libwbclient/wbclient.c b/nsswitch/libwbclient/wbclient.c index 15be255d45..19bb3e9e0a 100644 --- a/nsswitch/libwbclient/wbclient.c +++ b/nsswitch/libwbclient/wbclient.c @@ -148,6 +148,7 @@ const char *wbcErrorString(wbcErr error) } #define WBC_MAGIC (0x7a2b0e1e) +#define WBC_MAGIC_FREE (0x875634fe) struct wbcMemPrefix { uint32_t magic; @@ -197,6 +198,10 @@ void wbcFreeMemory(void *p) if (wbcMem->magic != WBC_MAGIC) { return; } + + /* paranoid check to ensure we don't double free */ + wbcMem->magic = WBC_MAGIC_FREE; + if (wbcMem->destructor != NULL) { wbcMem->destructor(p); } |