broadcom-wl: fix memory corruption and leakage on remove (patch from #9576 by George...

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27348 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/broadcom-wl/patches/006-fix-mem-leak-on-unload.patch b/package/broadcom-wl/patches/006-fix-mem-leak-on-unload.patch
new file mode 100644 (file)
index 0000000..41c246f
--- /dev/null
+++ b/package/broadcom-wl/patches/006-fix-mem-leak-on-unload.patch
@@ -0,0 +1,31 @@
+From: George Kashperko <george@znau.edu.ua>
+
+Release nvram variables buffer.
+Prevent block reserved by alloc_etherdev from being freed.
+Signed-off-by: George Kashperko <george@znau.edu.ua>
+---
+---
+--- a/driver/siutils.c
++++ b/driver/siutils.c
+@@ -647,7 +647,10 @@ si_detach(si_t *sih)
+ #if !defined(BCMBUSTYPE) || (BCMBUSTYPE == SI_BUS)
+       if (sii != &ksii)
+ #endif        /* !BCMBUSTYPE || (BCMBUSTYPE == SI_BUS) */
+-              MFREE(sii->osh, sii, sizeof(si_info_t));
++              do {
++                      MFREE(sii->osh, sii, sizeof(si_info_t));
++                      nvram_exit((void *)&(sii->pub));
++              } while (0);
+ }
+ 
+ void *
+--- a/driver/wl_linux.c
++++ b/driver/wl_linux.c
+@@ -1477,7 +1477,6 @@ wl_free_if(wl_info_t *wl, wl_if_t *wlif)
+               free_netdev(wlif->dev);
+ #endif
+       }
+-      MFREE(wl->osh, wlif, sizeof(wl_if_t));
+ }
+ 
+ #ifdef AP