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rpm: Add workaround for debugedit-segv

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[ YOCTO #4089 ]

On PPC and MIPS, there appears to be a condition that causes
debugedit to segfault.  The segfault is related to a call into
the md5hash algorithm, an address of '0', and a size > 0 is passed
causing the access of the address to segv.

This workaround may prove to be the final fix, but it's currently
unclear what the actual cause of the 0 address is.

(From OE-Core rev: a046029eb96cd9307253937ceeadafaaa6d06dce)

Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Mark Hatle
2013-03-25 12:19:52 -05:00
committed by Richard Purdie
parent 5ec19c8bcc
commit 5a9d83de1f
2 changed files with 37 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
meta/recipes-devtools/rpm/rpm/debugedit-segv.patch Normal file
View File

@@ -0,0 +1,35 @@
There are cases, especially on PPC and MIPS, where the data address
returned is 0, but the size is not 0.
It appears to happen when the sections headers are similar to:
[21] .data PROGBITS 000239c0 0139c0 000010 00 WA 0 0 8
[22] .got PROGBITS 000239d0 0139d0 000014 04 WAX 0 0 4
[23] .plt NOBITS 000239e4 0139e4 000234 00 WAX 0 0 4
[24] .bss NOBITS 00023c18 0139e4 0001c8 00 WA 0 0 8
[25] .comment PROGBITS 00000000 0139e4 000011 01 MS 0 0 1
[26] .debug_aranges PROGBITS 00000000 0139f8 000d68 00 0 0 8
Sections 23 and 24 (.plt and .bss) which are NOBITS have a loaded data address
of 0, but a size != 0.
This could be a bug in libelf...
Upstream-status: Pending
Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
Index: rpm-5.4.9/tools/debugedit.c
===================================================================
--- rpm-5.4.9.orig/tools/debugedit.c
+++ rpm-5.4.9/tools/debugedit.c
@@ -1434,7 +1434,8 @@ handle_build_id (DSO *dso, Elf_Data *bui
auto inline void process (const void *data, size_t size)
{
memchunk chunk = { .data = (void *) data, .size = size };
- hashFunctionContextUpdateMC (&ctx, &chunk);
+ if (data != NULL && size != 0)
+ hashFunctionContextUpdateMC (&ctx, &chunk);
}
union
{

3
meta/recipes-devtools/rpm/rpm_5.4.9.bb
View File

@@ -84,7 +84,8 @@ SRC_URI = "http://www.rpm5.org/files/rpm/rpm-5.4/rpm-5.4.9-0.20120508.src.rpm;ex
file://python-rpm-rpmsense.patch \
file://rpm-reloc-macros.patch \
file://rpm-platform2.patch \
file://rpm-remove-sykcparse-decl.patch \
file://rpm-remove-sykcparse-decl.patch \
file://debugedit-segv.patch \
"
# Uncomment the following line to enable platform score debugging