Messages in this thread Patch in this message | | | Date | Mon, 27 May 2013 10:00:12 +0800 | From | Chen Gang <> | Subject | [PATCH v2] arch: arm64: kernel: sprintf(), 'str' needs additional 1 byte for failure processing |
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When failure occurs at the last looping cycle (when 'i == 0'), it will print "bad PC value" instead of "(%08x) ", which needs additional 1 byte.
If not add 1 byte, the 'str' may be memory overflow.
Signed-off-by: Chen Gang <gang.chen@asianux.com> --- arch/arm64/kernel/traps.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index 61d7dd2..c2f68d2 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -100,7 +100,7 @@ static void dump_instr(const char *lvl, struct pt_regs *regs) { unsigned long addr = instruction_pointer(regs); mm_segment_t fs; - char str[sizeof("00000000 ") * 5 + 2 + 1], *p = str; + char str[sizeof("00000000 ") * 5 + 2 + 1 + 1], *p = str; int i; /* -- 1.7.7.6
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