From 4d439517561d009e170e2fe20be1ba25e19abe75 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Tue, 29 Mar 2011 14:18:39 -0300 Subject: [PATCH] perf symbols: Properly align symbol_conf.priv_size If symbol_conf.priv_size is not a multiple of "sizeof(u64)" we'll bus error on sparc64 in symbol__new because the "struct symbol *" pointer is computed by adding symbol_conf.priv_size to the memory allocated. We cannot isolate the fix to symbol__new and symbol__delete since the private area is computed by subtracting the priv_size value from a "struct symbol" pointer, so then the private area can still be potentially unaligned. So, simply align the symbol_conf.priv_size value in symbol__init() Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra LKML-Reference: <20110328.175849.112593455.davem@davemloft.net> Signed-off-by: David S. Miller Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/symbol.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 8f73907..f06c10f 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -2406,6 +2406,8 @@ int symbol__init(void) if (symbol_conf.initialized) return 0; + symbol_conf.priv_size = ALIGN(symbol_conf.priv_size, sizeof(u64)); + elf_version(EV_CURRENT); if (symbol_conf.sort_by_name) symbol_conf.priv_size += (sizeof(struct symbol_name_rb_node) - -- 2.7.4