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| author |   Paul Mundt <lethal@linux-sh.org> | 2009-08-15 01:05:46 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-08-15 01:05:46 +0900 |
| commit | 48e4d4604b7da52d6a56ddc821a460b183b7353d (patch) | |
| tree | f9a7846e5616dc972dcfa6e7d279f28e8178c014 /arch/sh/kernel | |
| parent | sh: unwinder: Convert frame allocations to GFP_ATOMIC. (diff) | |
| download | linux-dev-48e4d4604b7da52d6a56ddc821a460b183b7353d.tar.xz linux-dev-48e4d4604b7da52d6a56ddc821a460b183b7353d.zip | |
sh: stacktrace: Add reliability checks in address saving ops.
This adopts the reliability checks from the x86 stacktrace code so known
bad addresses are not recorded in the stack trace buffer.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel')
| -rw-r--r-- | arch/sh/kernel/stacktrace.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/sh/kernel/stacktrace.c b/arch/sh/kernel/stacktrace.c index 45b1adde3abe..a0f497bcbb4f 100644 --- a/arch/sh/kernel/stacktrace.c +++ b/arch/sh/kernel/stacktrace.c @@ -38,6 +38,9 @@ static void save_stack_address(void *data, unsigned long addr, int reliable) { struct stack_trace *trace = data; + if (!reliable) + return; + if (trace->skip > 0) { trace->skip--; return; @@ -67,6 +70,9 @@ save_stack_address_nosched(void *data, unsigned long addr, int reliable) { struct stack_trace *trace = (struct stack_trace *)data; + if (!reliable) + return; + if (in_sched_functions(addr)) return; |