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authorLinus Torvalds <torvalds@linux-foundation.org>2009-12-17 16:00:19 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-12-17 16:00:19 -0800
commitdcc7cd011220d7425a265c9bbf04c5731dacec1b (patch)
tree4c2244f6e6ce94e2698572e9d2df3baea8449c2a /kernel
parentbf931a01a2c024a54204b4b02276af6e8d99a2c0 (diff)
parentb60e26a2f03d963f8c79ad7920d64abc4d38ecbc (diff)
downloadvexpress-lsk-dcc7cd011220d7425a265c9bbf04c5731dacec1b.tar.gz
Merge branch 'kmemleak' of git://linux-arm.org/linux-2.6
* 'kmemleak' of git://linux-arm.org/linux-2.6: kmemleak: fix kconfig for crc32 build error kmemleak: Reduce the false positives by checking for modified objects kmemleak: Show the age of an unreferenced object kmemleak: Release the object lock before calling put_object() kmemleak: Scan the _ftrace_events section in modules kmemleak: Simplify the kmemleak_scan_area() function prototype kmemleak: Do not use off-slab management with SLAB_NOLEAKTRACE
Diffstat (limited to 'kernel')
-rw-r--r--kernel/module.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/kernel/module.c b/kernel/module.c
index a65dc787a27..e96b8ed1cb6 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1910,9 +1910,7 @@ static void kmemleak_load_module(struct module *mod, Elf_Ehdr *hdr,
unsigned int i;
/* only scan the sections containing data */
- kmemleak_scan_area(mod->module_core, (unsigned long)mod -
- (unsigned long)mod->module_core,
- sizeof(struct module), GFP_KERNEL);
+ kmemleak_scan_area(mod, sizeof(struct module), GFP_KERNEL);
for (i = 1; i < hdr->e_shnum; i++) {
if (!(sechdrs[i].sh_flags & SHF_ALLOC))
@@ -1921,8 +1919,7 @@ static void kmemleak_load_module(struct module *mod, Elf_Ehdr *hdr,
&& strncmp(secstrings + sechdrs[i].sh_name, ".bss", 4) != 0)
continue;
- kmemleak_scan_area(mod->module_core, sechdrs[i].sh_addr -
- (unsigned long)mod->module_core,
+ kmemleak_scan_area((void *)sechdrs[i].sh_addr,
sechdrs[i].sh_size, GFP_KERNEL);
}
}
@@ -2250,6 +2247,12 @@ static noinline struct module *load_module(void __user *umod,
"_ftrace_events",
sizeof(*mod->trace_events),
&mod->num_trace_events);
+ /*
+ * This section contains pointers to allocated objects in the trace
+ * code and not scanning it leads to false positives.
+ */
+ kmemleak_scan_area(mod->trace_events, sizeof(*mod->trace_events) *
+ mod->num_trace_events, GFP_KERNEL);
#endif
#ifdef CONFIG_FTRACE_MCOUNT_RECORD
/* sechdrs[0].sh_size is always zero */