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[Bug runtime/15080] The kernel function 'signal_wake_up' is gone
- From: "dsmith at redhat dot com" <sourceware-bugzilla at sourceware dot org>
- To: systemtap at sourceware dot org
- Date: Tue, 29 Jan 2013 16:53:17 +0000
- Subject: [Bug runtime/15080] The kernel function 'signal_wake_up' is gone
- Auto-submitted: auto-generated
- References: <bug-15080-6586@http.sourceware.org/bugzilla/>
http://sourceware.org/bugzilla/show_bug.cgi?id=15080
--- Comment #1 from David Smith <dsmith at redhat dot com> 2013-01-29 16:53:17 UTC ---
Looks like the following commit is the culprit:
commit 910ffdb18a6408e14febbb6e4b6840fd2c928c82
Author: Oleg Nesterov <oleg@redhat.com>
Date: Mon Jan 21 20:47:41 2013 +0100
ptrace: introduce signal_wake_up_state() and ptrace_signal_wake_up()
Cleanup and preparation for the next change.
signal_wake_up(resume => true) is overused. None of ptrace/jctl callers
actually want to wakeup a TASK_WAKEKILL task, but they can't specify the
necessary mask.
Turn signal_wake_up() into signal_wake_up_state(state), reintroduce
signal_wake_up() as a trivial helper, and add ptrace_signal_wake_up()
which adds __TASK_TRACED.
This way ptrace_signal_wake_up() can work "inside" ptrace_request()
even if the tracee doesn't have the TASK_WAKEKILL bit set.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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