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kmemleak: Scan the _ftrace_events section in modules

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This section contains pointers to allocated objects and not scanning it
leads to false positives.

Reported-by: Zdenek Kabelac <zdenek.kabelac@gmail.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Catalin Marinas 2009-10-28 13:33:10 +00:00
parent c017b4be3e
commit a6f5aa1ea0
1 changed files with 6 additions and 0 deletions
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6
kernel/module.c
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@ -2380,6 +2380,12 @@ 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 */