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0.178-6 - Add elfutils-0.178-compressed-vmlinuz.patch

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Mark Wielaard 2019-12-11 16:08:01 +01:00
parent 2162703997
commit 83259ef8d8
2 changed files with 67 additions and 2 deletions
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62
elfutils-0.178-compressed-vmlinuz.patch Normal file
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@ -0,0 +1,62 @@
commit 4a90cb11140a6bb3712228861a32e4035013ad85
Author: Mark Wielaard <mark@klomp.org>
Date: Thu Dec 5 15:03:54 2019 +0100
libdwfl: Find and handle compressed vmlinuz image.
Both the dwfl_linux_kernel_find_elf callback and the
dwfl_linux_kernel_report_offline reporting function only handled
vmlinix images possibly compressed with .gz, .bz2 or .xz extension.
They did not find or handle the much more common vmlinuz compressed
images.
It is not completely clear why we didn't up to now. Support for
compressed ELF files was added in 2009 and the code was updated to
to try to find the .gz, .bz2 or .xz extension variants in 2011.
But not the vmlinuz named variant.
Reported-by: Aaron Merey <amerey@redhat.com>
Tested-by: Frank Ch. Eigler <fche@redhat.com>
Signed-off-by: Mark Wielaard <mark@klomp.org>
diff --git a/libdwfl/linux-kernel-modules.c b/libdwfl/linux-kernel-modules.c
index d46ab5aa..48fb1ff0 100644
--- a/libdwfl/linux-kernel-modules.c
+++ b/libdwfl/linux-kernel-modules.c
@@ -174,6 +174,8 @@ kernel_release (void)
static int
find_kernel_elf (Dwfl *dwfl, const char *release, char **fname)
{
+ /* First try to find an uncompressed vmlinux image. Possibly
+ including debuginfo. */
if ((release[0] == '/'
? asprintf (fname, "%s/vmlinux", release)
: asprintf (fname, "/boot/vmlinux-%s", release)) < 0)
@@ -188,6 +190,27 @@ find_kernel_elf (Dwfl *dwfl, const char *release, char **fname)
fd = try_kernel_name (dwfl, fname, true);
}
+ /* There might be a compressed vmlinuz image. Probably without
+ debuginfo, but try to find it under the debug path also, just in
+ case. */
+ if (fd < 0)
+ {
+ free (*fname);
+ if ((release[0] == '/'
+ ? asprintf (fname, "%s/vmlinuz", release)
+ : asprintf (fname, "/boot/vmlinuz-%s", release)) < 0)
+ return -1;
+
+ fd = try_kernel_name (dwfl, fname, true);
+ if (fd < 0 && release[0] != '/')
+ {
+ free (*fname);
+ if (asprintf (fname, MODULEDIRFMT "/vmlinuz", release) < 0)
+ return -1;
+ fd = try_kernel_name (dwfl, fname, true);
+ }
+ }
+
return fd;
}

7
elfutils.spec
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@ -1,6 +1,6 @@
Name: elfutils
Version: 0.178
%global baserelease 5
%global baserelease 6
Release: %{baserelease}%{?dist}
URL: http://elfutils.org/
%global source_url ftp://sourceware.org/pub/elfutils/%{version}/
@ -57,6 +57,7 @@ BuildRequires: curl
Patch1: elfutils-0.178-pt-gnu-prop.patch
Patch2: elfutils-0.178-debuginfod-no-cache.patch
Patch3: elfutils-0.178-curl-code-gcc-10.patch
Patch4: elfutils-0.178-compressed-vmlinuz.patch
%description
Elfutils is a collection of utilities, including stack (to show
@ -251,6 +252,7 @@ such servers to download those files on demand.
%patch1 -p1 -b .pt-gnu-prop
%patch2 -p1 -b .debuginfod-client-cache
%patch3 -p1 -b .curl-gcc-10
%patch4 -p1 -b .vmlinuz
# In case the above patches added any new test scripts, make sure they
# are executable.
@ -428,8 +430,9 @@ exit 0
%systemd_postun_with_restart debuginfod.service
%changelog
* Wed Dec 11 2019 Mark Wielaard <mjw@fedoraproject.org>
* Wed Dec 11 2019 Mark Wielaard <mjw@fedoraproject.org> - 0.178-6
- Add elfutils-0.178-curl-code-gcc-10.patch
- Add elfutils-0.178-compressed-vmlinuz.patch
* Mon Dec 9 2019 Mark Wielaard <mjw@fedoraproject.org> - 0.178-5
- Add elfutils-0.178-debuginfod-no-cache.patch.