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authorLinus Torvalds <torvalds@linux-foundation.org>2010-01-16 12:27:47 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-01-16 12:27:47 -0800
commitc6a93d330b53fa587f550aedcdeb93ff23ea7f87 (patch)
tree9f702ce8e33f5c455cd95d6d5f6f78537e65ba67 /arch
parent6ccc347b699681a0b21c2f7b1a1f85500a58c6b8 (diff)
parent1703f2c321a8a531c393e137a82602e16c6061cb (diff)
Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf tools: Check if /dev/null can be used as the -o gcc argument perf tools: Move QUIET_STDERR def to before first use perf: Stop stack frame walking off kernel addresses boundaries
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/dumpstack.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c
index c56bc2873030..6d817554780a 100644
--- a/arch/x86/kernel/dumpstack.c
+++ b/arch/x86/kernel/dumpstack.c
@@ -123,13 +123,15 @@ print_context_stack_bp(struct thread_info *tinfo,
while (valid_stack_ptr(tinfo, ret_addr, sizeof(*ret_addr), end)) {
unsigned long addr = *ret_addr;
- if (__kernel_text_address(addr)) {
- ops->address(data, addr, 1);
- frame = frame->next_frame;
- ret_addr = &frame->return_address;
- print_ftrace_graph_addr(addr, data, ops, tinfo, graph);
- }
+ if (!__kernel_text_address(addr))
+ break;
+
+ ops->address(data, addr, 1);
+ frame = frame->next_frame;
+ ret_addr = &frame->return_address;
+ print_ftrace_graph_addr(addr, data, ops, tinfo, graph);
}
+
return (unsigned long)frame;
}
EXPORT_SYMBOL_GPL(print_context_stack_bp);