[dpdk-dev] [PATCH] array malloced by backtrace_symbols() should be freed by the caller
chixiaobo
xiaobo.chi at nokia.com
Tue Aug 4 11:04:18 CEST 2015
As to linux man page: http://linux.die.net/man/3/backtrace_symbols, The address of the array of string pointers is returned as the function result of backtrace_symbols(). This array is malloced by backtrace_symbols(), and must be freed by the caller. The strings pointed to by the array of pointers need not and should not be freed.
Signed-off-by: chixiaobo <xiaobo.chi at nokia.com>
---
lib/librte_eal/bsdapp/eal/eal_debug.c | 3 +++
lib/librte_eal/linuxapp/eal/eal_debug.c | 3 +++
2 files changed, 6 insertions(+)
diff --git a/lib/librte_eal/bsdapp/eal/eal_debug.c b/lib/librte_eal/bsdapp/eal/eal_debug.c
index 44fc4f3..ceca2e8 100644
--- a/lib/librte_eal/bsdapp/eal/eal_debug.c
+++ b/lib/librte_eal/bsdapp/eal/eal_debug.c
@@ -58,6 +58,9 @@ void rte_dump_stack(void)
"%d: [%s]\n", size, symb[size - 1]);
size --;
}
+ /* This array is malloced by backtrace_symbols(), and must be freed by the caller */
+ if( symb )
+ free( (void *)symb );
}
/* not implemented in this environment */
diff --git a/lib/librte_eal/linuxapp/eal/eal_debug.c b/lib/librte_eal/linuxapp/eal/eal_debug.c
index 44fc4f3..ceca2e8 100644
--- a/lib/librte_eal/linuxapp/eal/eal_debug.c
+++ b/lib/librte_eal/linuxapp/eal/eal_debug.c
@@ -58,6 +58,9 @@ void rte_dump_stack(void)
"%d: [%s]\n", size, symb[size - 1]);
size --;
}
+ /* This array is malloced by backtrace_symbols(), and must be freed by the caller */
+ if( symb )
+ free( (void *)symb );
}
/* not implemented in this environment */
--
1.9.4.msysgit.2
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