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authorRobert Yang <liezhi.yang@windriver.com>2018-10-11 12:06:53 +0800
committerRichard Purdie <richard.purdie@linuxfoundation.org>2018-10-12 16:57:21 +0100
commitf302012bdd45ef4582ae110964324d33349025b8 (patch)
tree31556481ef940c762046781bad455db785b2bd44 /meta/recipes-devtools/prelink
parent25f0252d61fbbff97fab31d63c74a9b3c77fa7ce (diff)
downloadpoky-f302012bdd45ef4582ae110964324d33349025b8.tar.gz
prelink: Fix Segmentation fault error when prelink qemu
The info->resolvetls might be NULL according to src/prelink.c: [snip] /* Dynamic linker does not depend on any other library, all symbols resolve to themselves with the exception of SHN_UNDEF symbols which resolve to 0. */ if (info->symtab[r_sym].st_shndx == SHN_UNDEF) { info->resolveent = NULL; info->resolvetls = NULL; [snip] So we must check it before use its members, otherwise, there might be Segmentation fault error. Fixed: MACHINE = "qemumips" IMAGE_INSTALL_append = " qemu" $ bitbake core-image-minimal [snip] | /path/to/qemumips-poky-linux/core-image-minimal/1.0-r0/temp/run.prelink_image.1000: line 111: 1010 Segmentation fault (core dumped) [snip] (From OE-Core rev: 7f5d6f6b70cb1eb486d3ff5c029fc3c6202fc826) Signed-off-by: Robert Yang <liezhi.yang@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/recipes-devtools/prelink')
-rw-r--r--meta/recipes-devtools/prelink/prelink/0001-src-arch-mips.c-check-info-resolvetls-before-use-its.patch51
-rw-r--r--meta/recipes-devtools/prelink/prelink_git.bb1
2 files changed, 52 insertions, 0 deletions
diff --git a/meta/recipes-devtools/prelink/prelink/0001-src-arch-mips.c-check-info-resolvetls-before-use-its.patch b/meta/recipes-devtools/prelink/prelink/0001-src-arch-mips.c-check-info-resolvetls-before-use-its.patch
new file mode 100644
index 0000000000..b1688243af
--- /dev/null
+++ b/meta/recipes-devtools/prelink/prelink/0001-src-arch-mips.c-check-info-resolvetls-before-use-its.patch
@@ -0,0 +1,51 @@
1From 2136969e3e196b9cf7f4788340efa4b1d9b39565 Mon Sep 17 00:00:00 2001
2From: Robert Yang <liezhi.yang@windriver.com>
3Date: Thu, 11 Oct 2018 10:05:52 +0800
4Subject: [PATCH] src/arch-mips.c: check info->resolvetls before use its member
5
6The info->resolvetls might be NULL according to src/prelink.c:
7[snip]
8 /* Dynamic linker does not depend on any other library,
9 all symbols resolve to themselves with the exception
10 of SHN_UNDEF symbols which resolve to 0. */
11if (info->symtab[r_sym].st_shndx == SHN_UNDEF)
12 {
13 info->resolveent = NULL;
14 info->resolvetls = NULL;
15[snip]
16
17So we must check it before use its members, otherwise, there might be
18Segmentation fault error.
19
20Fixed:
21MACHINE = "qemumips"
22IMAGE_INSTALL_append = " qemu"
23$ bitbake core-image-minimal
24[snip]
25| /path/to/qemumips-poky-linux/core-image-minimal/1.0-r0/temp/run.prelink_image.1000: line 111: 1010 Segmentation fault (core dumped)
26[snip]
27
28Upstream-Status: Submitted [https://lists.yoctoproject.org/pipermail/yocto/2018-October/042812.html]
29
30Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
31---
32 src/arch-mips.c | 3 ++-
33 1 file changed, 2 insertions(+), 1 deletion(-)
34
35diff --git a/src/arch-mips.c b/src/arch-mips.c
36index ccb1834..02c608f 100644
37--- a/src/arch-mips.c
38+++ b/src/arch-mips.c
39@@ -567,7 +567,8 @@ mips_prelink_reloc (struct prelink_info *info, GElf_Addr r_offset,
40 if (dso->ehdr.e_type == ET_EXEC)
41 {
42 value = info->resolve (info, r_sym, r_type);
43- value += info->resolvetls->offset - TLS_TP_OFFSET;
44+ if (info->resolvetls != NULL)
45+ value += info->resolvetls->offset - TLS_TP_OFFSET;
46 if (r_type == R_MIPS_TLS_TPREL32)
47 mips_prelink_32bit_reloc (dso, rela, value);
48 else
49--
502.7.4
51
diff --git a/meta/recipes-devtools/prelink/prelink_git.bb b/meta/recipes-devtools/prelink/prelink_git.bb
index 3f2a2e227d..b1261d5942 100644
--- a/meta/recipes-devtools/prelink/prelink_git.bb
+++ b/meta/recipes-devtools/prelink/prelink_git.bb
@@ -32,6 +32,7 @@ SRC_URI = "git://git.yoctoproject.org/prelink-cross.git;branch=cross_prelink_sta
32 file://prelink.cron.daily \ 32 file://prelink.cron.daily \
33 file://prelink.default \ 33 file://prelink.default \
34 file://macros.prelink \ 34 file://macros.prelink \
35 file://0001-src-arch-mips.c-check-info-resolvetls-before-use-its.patch \
35" 36"
36UPSTREAM_CHECK_COMMITS = "1" 37UPSTREAM_CHECK_COMMITS = "1"
37 38