+++ This bug was initially created as a clone of Bug #454156 +++ Description of problem: Process SIGSTOPs, debugger PTRACE_ATTACHes it, first WAITPID(,,0) returns SIGSTOP but second WAITPID(,,0) returns SIG_0 (that one should be waiting). Version-Release number of selected component (if applicable): FAIL kernel-2.6.18-92.1.6.el5.x86_64 (but PASS on RHEL-4 kernel-smp-2.6.9-67.0.20.EL.x86_64) How reproducible: Always. Steps to Reproduce: wget -O stop-attach-then-wait.c http://sources.redhat.com/cgi-bin/cvsweb.cgi/~checkout~/tests/ptrace-tests/tests/stop-attach-then-wait.c?cvsroot=systemtap; gcc -o stop-attach-then-wait stop-attach-then-wait.c -Wall -ggdb2 -D_GNU_SOURCE; ./stop-attach-then-wait; echo $? Actual results: 1 Expected results: 0 Additional info: Upstream bugreport post: https://www.redhat.com/archives/utrace-devel/2008-June/msg00021.html
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It is a regression against RHEL-4. I was unable to fix the Bug 456333 regressing issue 78487 as I was hitting this Bug while coding it.
This bugzilla has Keywords: Regression. Since no regressions are allowed between releases, it is also being proposed as a blocker for this release. Please resolve ASAP.
Pushing to RHEL 5.4, as this problem was not fixed for this release due to lower priority compared to other issues.
Updating PM score.
Well. I need to reserve the testing machine to verify. But. I bet this was already fixed, and this bug duplicates bz #481199
(In reply to comment #13) > Well. I need to reserve the testing machine to verify. > > But. I bet this was already fixed, and this bug duplicates > bz #481199 Yes, verified. Marking as duplicate. *** This bug has been marked as a duplicate of bug 481199 ***