Bug 1527809
| Summary: | staprun cannot detach | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Ichiko Sakamoto <i.sakamoto> |
| Component: | systemtap | Assignee: | Frank Ch. Eigler <fche> |
| Status: | CLOSED ERRATA | QA Contact: | Martin Cermak <mcermak> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 7.4 | CC: | dsmith, jistone, lberk, lmiksik, mbenitez, mcermak, mjw |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | systemtap-3.2-4.el7 | Doc Type: | If docs needed, set a value |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2018-04-10 16:32:40 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
I took a look at this one and fixed this upstream in commit b8d11c5e0: https://sourceware.org/git/gitweb.cgi?p=systemtap.git;a=commit;h=b8d11c5e07aa1dcc8e7ec4ffff645d0589579dea I didn't see any testsuite regressions after applying this patch. This patch also includes a new test so that we'll notice if this problem reappears. This patch will need to be backported. Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2018:0906 |
Description of problem: staprun(8) manual says "Users can also detach from the kernel module interactively by sending the SIGQUIT signal from the keyboard". But, staprun cannot detach from kernel module with SIGQUIT. Version-Release number of selected component (if applicable): systemtap-runtime-3.1-4.el7_4.x86_64 How reproducible: Always. Steps to Reproduce: 1. Load module # staprun -L xxx.ko 2. Attach # staprun xxx 3. Send SIGQUIT Actual results: The kernel module was unloaded and staprun exited. Expected results: staprun detached from the kernel module and exited. Additional info: stp_main_loop seems to ignore "load_only" flag when receiving STP_EXIT. mainloop.c -- 599 int stp_main_loop(void) ... 819 case STP_EXIT: 820 { 821 /* module asks us to unload it and exit */ 822 dbug(2, "got STP_EXIT\n"); 823 if (monitor) 824 monitor_exited(); 825 else 826 cleanup_and_exit(0, error_detected); ^ detach = 0 827 /* monitor mode exit handled elsewhere, later. */ 828 break; 829 } --