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Merge branch 'kmemleak' of git://linux-arm.org/linux-2.6

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* '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
This commit is contained in:
Linus Torvalds
2009-12-17 16:00:19 -08:00
parent bf931a01a2 b60e26a2f0
commit dcc7cd0112
5 changed files with 118 additions and 100 deletions
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13
kernel/module.c
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@@ -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 */