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authorDavid S. Miller <davem@davemloft.net>2011-03-29 14:18:39 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-03-29 14:18:39 -0300
commit4d439517561d009e170e2fe20be1ba25e19abe75 (patch)
tree5d15d0b5bb4a214641d31cf740c9478495d0dbd5 /tools
parent1dfd7b494b3d8fb1e8a7383a8095f77eb058cd83 (diff)
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 <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> LKML-Reference: <20110328.175849.112593455.davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools')
-rw-r--r--tools/perf/util/symbol.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 8f73907a959e..f06c10f092ba 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) -

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