Merge branch 'f29'
* f29: rhbz1650371 upstream release 3.3 3.2-11 spec update. 3.2-11 3.2-10 3.2-9 - Add unwind-fallback.patch. Backport fix for removed timers in kernel 4.15 (#1546563)
This commit is contained in:
Frank Ch. Eigler
commit
5a071c9e48
134
rhbz1650371.patch
Normal file
134
rhbz1650371.patch
Normal file
@ -0,0 +1,134 @@
|
||||
commit fba365b4d365f54ab7ef60272996dc2889461640
|
||||
Author: Frank Ch. Eigler <fche@redhat.com>
|
||||
Date: Thu Nov 15 16:27:58 2018 -0500
|
||||
|
||||
PR23890: tolerate f29+ style ELF files
|
||||
|
||||
Reported by kenj@pcp, with mjw et al.'s help, we found out why
|
||||
systemtap on fedora 29+ routinely fails to verify build-ids for
|
||||
userspace programs. F29 adds a separate loadable segment with the
|
||||
relevante .note's, before the main text segment. The runtime code
|
||||
that listens to mmaps-in-progress now accepts this configuration.
|
||||
As long as the .note section is loaded (time-wise and space-wise)
|
||||
before the .text one(s), we're good.
|
||||
|
||||
diff --git a/runtime/linux/uprobes-inode.c b/runtime/linux/uprobes-inode.c
|
||||
index 6d450c90d87c..b9604e6385ce 100644
|
||||
--- a/runtime/linux/uprobes-inode.c
|
||||
+++ b/runtime/linux/uprobes-inode.c
|
||||
@@ -563,9 +563,11 @@ stapiu_change_plus(struct stapiu_target* target, struct task_struct *task,
|
||||
return rc;
|
||||
}
|
||||
|
||||
- /* Actually do the check. */
|
||||
+ /* Actually do the check. NB: on F29+, offset may not equal 0
|
||||
+ for LOADable "R E" segments, because the read-only .note.*
|
||||
+ stuff may have been loaded earlier, separately. PR23890. */
|
||||
if ((rc = _stp_usermodule_check(task, target->filename,
|
||||
- relocation))) {
|
||||
+ relocation - offset))) {
|
||||
/* Be sure to release the inode on failure. */
|
||||
iput(target->inode);
|
||||
target->inode = NULL;
|
||||
|
||||
commit 824e9ab80108c1882842fc2a4b4abd1aee990ecc (upstream/master)
|
||||
Author: Frank Ch. Eigler <fche@redhat.com>
|
||||
Date: Thu Nov 15 20:22:34 2018 -0500
|
||||
|
||||
PR23890 bonus: show nicer messages upon a buildid mismatch
|
||||
|
||||
Instead of producing only a one-byte error, we now compute the entire
|
||||
builds into hex text strings, and report the whole shebang on an
|
||||
error. (Also, ditch some 2.6.27 kernel-bug compatibiltiy fossil
|
||||
in the area.)
|
||||
|
||||
diff --git a/runtime/sym.c b/runtime/sym.c
|
||||
index 60f0fa980964..111147ee555d 100644
|
||||
--- a/runtime/sym.c
|
||||
+++ b/runtime/sym.c
|
||||
@@ -636,30 +636,46 @@ unsigned long _stp_linenumber_lookup(unsigned long addr, struct task_struct *tas
|
||||
return 0;
|
||||
}
|
||||
|
||||
+
|
||||
+// Compare two build-id hex strings, each of length m->build_id_len bytes.
|
||||
+// Since mismatches can mystify, produce a hex-textual version of both
|
||||
+// expected and actual strings, and compare textually. Failure messages
|
||||
+// are more intelligible this way.
|
||||
static int _stp_build_id_check (struct _stp_module *m,
|
||||
unsigned long notes_addr,
|
||||
struct task_struct *tsk)
|
||||
{
|
||||
- int j;
|
||||
+ enum { max_buildid_hexstring = 65 };
|
||||
+ static const char hexnibble[16]="0123456789abcdef";
|
||||
+ char hexstring_theory[max_buildid_hexstring], hexstring_practice[max_buildid_hexstring];
|
||||
+ int buildid_len = min((max_buildid_hexstring-1)/2, m->build_id_len);
|
||||
+
|
||||
+ int i, j;
|
||||
+
|
||||
+ memset(hexstring_theory, '\0', max_buildid_hexstring);
|
||||
+ for (i=0, j=0; j<buildid_len; j++) {
|
||||
+ unsigned char theory = m->build_id_bits[j];
|
||||
+ hexstring_theory[i++] = hexnibble[theory >> 4];
|
||||
+ hexstring_theory[i++] = hexnibble[theory & 15];
|
||||
+ }
|
||||
|
||||
- for (j = 0; j < m->build_id_len; j++) {
|
||||
+ memset(hexstring_practice, '\0', max_buildid_hexstring);
|
||||
+ for (i=0, j=0; j<buildid_len; j++) {
|
||||
/* Use set_fs / get_user to access conceivably invalid addresses.
|
||||
* If loc2c-runtime.h were more easily usable, a deref() loop
|
||||
* could do it too. */
|
||||
mm_segment_t oldfs = get_fs();
|
||||
int rc;
|
||||
- unsigned char theory, practice = 0;
|
||||
+ unsigned char practice = 0;
|
||||
|
||||
#ifdef STAPCONF_PROBE_KERNEL
|
||||
if (!tsk) {
|
||||
- theory = m->build_id_bits[j];
|
||||
set_fs(KERNEL_DS);
|
||||
rc = probe_kernel_read(&practice, (void*)(notes_addr + j), 1);
|
||||
}
|
||||
else
|
||||
#endif
|
||||
{
|
||||
- theory = m->build_id_bits[j];
|
||||
set_fs (tsk ? USER_DS : KERNEL_DS);
|
||||
|
||||
/*
|
||||
@@ -685,21 +701,19 @@ static int _stp_build_id_check (struct _stp_module *m,
|
||||
}
|
||||
set_fs(oldfs);
|
||||
|
||||
- if (rc || (theory != practice)) {
|
||||
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
|
||||
- _stp_error ("Build-id mismatch [man error::buildid]: \"%s\" byte %d (0x%02x vs 0x%02x) address %#lx rc %d\n",
|
||||
- m->path, j, theory, practice, notes_addr, rc);
|
||||
+ if (rc == 0) { // got actual data byte
|
||||
+ hexstring_practice[i++] = hexnibble[practice >> 4];
|
||||
+ hexstring_practice[i++] = hexnibble[practice & 15];
|
||||
+ }
|
||||
+ }
|
||||
+
|
||||
+ // have two strings, will travel
|
||||
+ if (strcmp (hexstring_practice, hexstring_theory)) {
|
||||
+ _stp_error ("Build-id mismatch [man error::buildid]: \"%s\" address %#lx, expected %s actual %s\n",
|
||||
+ m->path, notes_addr, hexstring_theory, hexstring_practice);
|
||||
return 1;
|
||||
-#else
|
||||
- /* This branch is a surrogate for kernels affected by Fedora bug
|
||||
- * #465873. */
|
||||
- _stp_warn (KERN_WARNING
|
||||
- "Build-id mismatch [man error::buildid]: \"%s\" byte %d (0x%02x vs 0x%02x) rc %d\n",
|
||||
- m->path, j, theory, practice, rc);
|
||||
-#endif
|
||||
- break;
|
||||
- } /* end mismatch */
|
||||
- } /* end per-byte check loop */
|
||||
+ }
|
||||
+
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -87,7 +87,7 @@
|
||||
|
||||
Name: systemtap
|
||||
Version: 4.0
|
||||
Release: 2%{?release_override}%{?dist}
|
||||
Release: 3%{?release_override}%{?dist}
|
||||
# for version, see also configure.ac
|
||||
|
||||
|
||||
@ -123,6 +123,8 @@ License: GPLv2+
|
||||
URL: http://sourceware.org/systemtap/
|
||||
Source: ftp://sourceware.org/pub/systemtap/releases/systemtap-%{version}.tar.gz
|
||||
|
||||
Patch10: rhbz1650371.patch
|
||||
|
||||
# Build*
|
||||
BuildRequires: gcc-c++
|
||||
BuildRequires: cpio
|
||||
@ -518,6 +520,8 @@ find . \( -name configure -o -name config.h.in \) -print | xargs touch
|
||||
cd ..
|
||||
%endif
|
||||
|
||||
%patch10 -p1
|
||||
|
||||
%build
|
||||
|
||||
%if %{with_bundled_elfutils}
|
||||
@ -1253,6 +1257,9 @@ done
|
||||
|
||||
# PRERELEASE
|
||||
%changelog
|
||||
* Thu Nov 15 2018 Frank Ch. Eigler <fche@redhat.com> - 4.0-3
|
||||
- rhbz1650371 - buildid mismatch for uprobes
|
||||
|
||||
* Sun Oct 14 2018 Peter Robinson <pbrobinson@fedoraproject.org> 4.0-2
|
||||
- Crash and virt host supported on ppc64le and aarch64
|
||||
- Move chkconfig to traditional initscripts deps
|
||||
|
||||
Loading…
Reference in New Issue
Block a user