The patch titled
Subject: ptrace: renumber PTRACE_EVENT_STOP so that future new options and events can match
has been added to the -mm tree. Its filename is
ptrace-renumber-ptrace_event_stop-so-that-future-new-options-and-events-can-match.patch
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From: Denys Vlasenko <vda.linux@xxxxxxxxxxxxxx>
Subject: ptrace: renumber PTRACE_EVENT_STOP so that future new options and events can match
PTRACE_EVENT_foo and PTRACE_O_TRACEfoo used to match.
New PTRACE_EVENT_STOP is the first event which has no corresponding
PTRACE_O_TRACE option. If we will ever want to add another such option,
its PTRACE_EVENT's value will collide with PTRACE_EVENT_STOP's value.
This patch changes PTRACE_EVENT_STOP value to prevent this.
While at it, added a comment - the one atop PTRACE_EVENT block, saying
"Wait extended result codes for the above trace options", is not true for
PTRACE_EVENT_STOP.
Signed-off-by: Denys Vlasenko <vda.linux@xxxxxxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Reviewed-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Pedro Alves <palves@xxxxxxxxxx>
Cc: Jan Kratochvil <jan.kratochvil@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/ptrace.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN include/linux/ptrace.h~ptrace-renumber-ptrace_event_stop-so-that-future-new-options-and-events-can-match include/linux/ptrace.h
--- a/include/linux/ptrace.h~ptrace-renumber-ptrace_event_stop-so-that-future-new-options-and-events-can-match
+++ a/include/linux/ptrace.h
@@ -61,7 +61,8 @@
#define PTRACE_EVENT_EXEC 4
#define PTRACE_EVENT_VFORK_DONE 5
#define PTRACE_EVENT_EXIT 6
-#define PTRACE_EVENT_STOP 7
+/* Extended result codes which enabled by means other than options. */
+#define PTRACE_EVENT_STOP 128
/* options set using PTRACE_SETOPTIONS */
#define PTRACE_O_TRACESYSGOOD 1
_
Subject: Subject: ptrace: renumber PTRACE_EVENT_STOP so that future new options and events can match
Patches currently in -mm which might be from vda.linux@xxxxxxxxxxxxxx are
linux-next.patch
kernel-exitc-if-init-dies-log-a-signal-which-killed-it-if-any.patch
kernel-exitc-if-init-dies-log-a-signal-which-killed-it-if-any-fix.patch
ptrace-the-killed-tracee-should-not-enter-the-syscall.patch
ptrace-dont-send-sigtrap-on-exec-if-seized.patch
ptrace-dont-modify-flags-on-ptrace_setoptions-failure.patch
ptrace-simplify-ptrace_foo-constants-and-ptrace_setoptions-code.patch
ptrace-make-ptrace_seize-set-ptrace-options-specified-in-data-parameter.patch
ptrace-renumber-ptrace_event_stop-so-that-future-new-options-and-events-can-match.patch
ptrace-remove-ptrace_seize_devel-bit.patch
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