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From c1497bdb2a1deaa467fa75a80b1fb993a7d500f5 Mon Sep 17 00:00:00 2001
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From: Martin Milata <mmilata@redhat.com>
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Date: Mon, 8 Dec 2014 15:37:17 +0100
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Subject: [PATCH 5/5] Disable hook unwind on kernels w/o PTRACE_SEIZE
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Related to abrt/abrt#829.
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Signed-off-by: Martin Milata <mmilata@redhat.com>
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---
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lib/core_unwind.c | 7 ++++---
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lib/core_unwind_elfutils.c | 6 ++++++
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2 files changed, 10 insertions(+), 3 deletions(-)
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diff --git a/lib/core_unwind.c b/lib/core_unwind.c
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index 8599f0f..cf9973a 100644
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--- a/lib/core_unwind.c
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+++ b/lib/core_unwind.c
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@@ -25,6 +25,7 @@
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#include <string.h>
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#include <errno.h>
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#include <sys/procfs.h> /* struct elf_prstatus */
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+#include <sys/ptrace.h> /* PTRACE_SEIZE */
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#include "utils.h"
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#include "core/unwind.h"
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@@ -52,19 +53,19 @@ sr_parse_coredump(const char *coredump_filename,
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#endif /* !defined WITH_LIBDWFL && !defined WITH_LIBUNWIND */
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-#if !defined WITH_LIBDWFL
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+#if (!defined WITH_LIBDWFL || !defined PTRACE_SEIZE)
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struct sr_core_stacktrace *
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sr_core_stacktrace_from_core_hook(pid_t thread_id,
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const char *executable_filename,
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int signum,
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- char **error_message);
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+ char **error_message)
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{
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*error_message = sr_asprintf("satyr is built without live process unwind support");
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return NULL;
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}
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-#endif /* !defined WITH_LIBDWFL */
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+#endif /* !defined WITH_LIBDWFL || !defined PTRACE_SEIZE */
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/* FIXME: is there another way to pass the executable name to the find_elf
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* callback? */
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diff --git a/lib/core_unwind_elfutils.c b/lib/core_unwind_elfutils.c
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index eb366cd..1482dba 100644
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--- a/lib/core_unwind_elfutils.c
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+++ b/lib/core_unwind_elfutils.c
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@@ -212,6 +212,10 @@ fail:
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return stacktrace;
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}
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+/* If PTRACE_SEIZE is not defined (kernel < 3.4), stub function from
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+ * core_unwind.c is used. */
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+#ifdef PTRACE_SEIZE
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+
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struct sr_core_stacktrace *
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sr_core_stacktrace_from_core_hook(pid_t tid,
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const char *executable,
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@@ -344,4 +348,6 @@ fail:
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return stacktrace;
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}
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+#endif /* PTRACE_SEIZE */
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+
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#endif /* WITH_LIBDWFL */
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--
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2.4.3
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