diff options
Diffstat (limited to 'meta/recipes-kernel/systemtap/systemtap/0001-dwflpp-function_entrypc-avoid-usage-of-uninitialized.patch')
-rw-r--r-- | meta/recipes-kernel/systemtap/systemtap/0001-dwflpp-function_entrypc-avoid-usage-of-uninitialized.patch | 46 |
1 files changed, 0 insertions, 46 deletions
diff --git a/meta/recipes-kernel/systemtap/systemtap/0001-dwflpp-function_entrypc-avoid-usage-of-uninitialized.patch b/meta/recipes-kernel/systemtap/systemtap/0001-dwflpp-function_entrypc-avoid-usage-of-uninitialized.patch deleted file mode 100644 index d0082a1094..0000000000 --- a/meta/recipes-kernel/systemtap/systemtap/0001-dwflpp-function_entrypc-avoid-usage-of-uninitialized.patch +++ /dev/null @@ -1,46 +0,0 @@ -From 8466fca2a074323a235ef38d425f994a2ff7e64f Mon Sep 17 00:00:00 2001 -From: Victor Kamensky <kamensky@cisco.com> -Date: Mon, 9 Jul 2018 09:31:19 -0700 -Subject: [PATCH] dwflpp::function_entrypc avoid usage of uninitialized memory - -Failure on 3.3 release was observed. Failure was elusive and -disappeared after seemingly random configure option change, or when -code was compiled with -O1 or -O0 (vs default -O2). Running failing -test case under valgrind memcheck pointed to couple places where -'Conditional jump or move depends on uninitialised value(s)' occured. - -After addressing these in two places in dwflpp::function_entrypc, -valgrind memcheck run is clean and original issue got fixed. - -Upstream-Status: Backport -Signed-off-by: Victor Kamensky <kamensky@cisco.com> ---- - dwflpp.cxx | 6 +++++- - 1 file changed, 5 insertions(+), 1 deletion(-) - -diff --git a/dwflpp.cxx b/dwflpp.cxx -index bfbb6b096..2172e705a 100644 ---- a/dwflpp.cxx -+++ b/dwflpp.cxx -@@ -2465,13 +2465,17 @@ bool - dwflpp::function_entrypc (Dwarf_Addr * addr) - { - assert (function); -+ -+ // assign default value -+ *addr = 0; -+ - // PR10574: reject 0, which tends to be eliminated COMDAT - if (dwarf_entrypc (function, addr) == 0 && *addr != 0) - return true; - - /* Assume the entry pc is the base address, or (if zero) - the first address of the ranges covering this DIE. */ -- Dwarf_Addr start, end; -+ Dwarf_Addr start = 0, end; - if (dwarf_ranges (function, 0, addr, &start, &end) >= 0) - { - if (*addr == 0) --- -2.17.1 - |