diff options
Diffstat (limited to 'meta/recipes-devtools/rpm/rpm/debugedit-valid-file-to-fix-segment-fault.patch')
-rw-r--r-- | meta/recipes-devtools/rpm/rpm/debugedit-valid-file-to-fix-segment-fault.patch | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/meta/recipes-devtools/rpm/rpm/debugedit-valid-file-to-fix-segment-fault.patch b/meta/recipes-devtools/rpm/rpm/debugedit-valid-file-to-fix-segment-fault.patch deleted file mode 100644 index 8040482536..0000000000 --- a/meta/recipes-devtools/rpm/rpm/debugedit-valid-file-to-fix-segment-fault.patch +++ /dev/null @@ -1,65 +0,0 @@ -debugedit: fix segment fault while file's bss offset have a large number - -While ELF_C_RDWR_MMAP was used, elf_begin invoked mmap() to map file -into memory. While the file's bss Offset has a large number, elf_update -caculated file size by __elf64_updatenull_wrlock and the size was -enlarged. - -In this situation, elf_update invoked ftruncate to enlarge the file, -and memory size (elf->maximum_size) also was incorrectly updated. -There was segment fault in elf_end which invoked munmap with the -length is the enlarged file size, not the mmap's length. - -Before the above operations, invoke elf_begin/elf_update/elf_end -with ELF_C_RDWR and ELF_F_LAYOUT set to enlarge the above file, it -could make sure the file is safe for the following elf operations. - -Upstream-Status: Submitted [RPM5 maintainer] -Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com> ---- - tools/debugedit.c | 25 +++++++++++++++++++++++++ - 1 file changed, 25 insertions(+) - -Index: rpm-5.4.14/tools/debugedit.c -=================================================================== ---- rpm-5.4.14.orig/tools/debugedit.c -+++ rpm-5.4.14/tools/debugedit.c -@@ -1525,6 +1525,28 @@ handle_build_id (DSO *dso, Elf_Data *bui - } - } - -+/* It avoided the segment fault while file's bss offset have a large number. -+ See https://bugzilla.redhat.com/show_bug.cgi?id=1019707 -+ https://bugzilla.redhat.com/show_bug.cgi?id=1020842 for detail. */ -+void valid_file(int fd) -+{ -+ Elf *elf = elf_begin (fd, ELF_C_RDWR, NULL); -+ if (elf == NULL) -+ { -+ error (1, 0, "elf_begin: %s", elf_errmsg (-1)); -+ return; -+ } -+ -+ elf_flagelf (elf, ELF_C_SET, ELF_F_LAYOUT); -+ -+ if (elf_update (elf, ELF_C_WRITE) < 0) -+ error (1, 0, "elf_update: %s", elf_errmsg (-1)); -+ -+ elf_end (elf); -+ -+ return; -+} -+ - int - main (int argc, char *argv[]) - { -@@ -1621,6 +1643,9 @@ main (int argc, char *argv[]) - exit (1); - } - -+ /* Make sure the file is valid. */ -+ valid_file(fd); -+ - dso = fdopen_dso (fd, file); - if (dso == NULL) - exit (1); |