Bug 1100813
| Summary: | buildok/nfsd-detailed.stp (part of systemtap.pass1-4/buildok-dyninst.exp) regressed | |||
|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Martin Cermak <mcermak> | |
| Component: | systemtap | Assignee: | Frank Ch. Eigler <fche> | |
| Status: | CLOSED ERRATA | QA Contact: | Martin Cermak <mcermak> | |
| Severity: | medium | Docs Contact: | ||
| Priority: | medium | |||
| Version: | 6.6 | CC: | dsmith, mjw, scox, wcohen | |
| Target Milestone: | rc | |||
| Target Release: | --- | |||
| Hardware: | i686 | |||
| OS: | Linux | |||
| Whiteboard: | ||||
| Fixed In Version: | systemtap-2.5-4.el6 | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | ||
| Clone Of: | ||||
| : | 1107616 (view as bug list) | Environment: | ||
| Last Closed: | 2014-10-14 06:32:12 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: | ||||
Upstream commit 6230ede fixes this issue. It should easily backport. Looks good to me using c6c7b81a1 on RHEL6 all supported arches (tested with c6c7b81a1 sources).
However on rhel7 (kernel-3.10.0-123.el7) I see issues on s390x and ppc64:
=======
7.0 S s390x # stap -p4 ./buildok/nfsd-detailed.stp
semantic error: No cfa_ops supplied, but needed by DW_OP_call_frame_cfa: identifier '$count' at /usr/share/systemtap/tapset/linux/nfsd.stp:1174:22
source: count = kernel_long($count)
^
Pass 2: analysis failed. [man error::pass2]
Number of similar error messages suppressed: 59.
Rerun with -v to see them.
=======
7.0 S ppc64 # stap -p4 ./buildok/nfsd-detailed.stp
semantic error: not accessible at this address (pc: 0x18178) [man error::dwarf]: identifier '$rqstp' at /usr/share/systemtap/tapset/linux/nfsd.stp:1099:33
dieoffset: 0x4e67a from /usr/lib/debug/lib/modules/3.10.0-123.el7.ppc64/kernel/fs/nfsd/nfsd.ko.debug
function: nfsd_open at fs/nfsd/vfs.c:814 inlined by nfsd_read at fs/nfsd/vfs.c:1120
alternative locations: [0x1818c,0x1819f], [0x1819f,0x18440], [0x18440,0x1852c], [0x1852c,0x18634], [0x18634,0x18678], [0x18678,0x186bc], [0x186bc,0x186cc], [0x186cc,0x186ec]
source: client_ip = addr_from_rqst_str($rqstp)
^
Pass 2: analysis failed. [man error::pass2]
Number of similar error messages suppressed: 7.
Rerun with -v to see them.
=======
This is a RHEL7 specific issue though. Feel free to clone this comment to a separate BZ if you wish.
(In reply to Martin Cermak from comment #2) > Looks good to me using c6c7b81a1 on RHEL6 all supported arches (tested with > c6c7b81a1 sources). Good deal. > However on rhel7 (kernel-3.10.0-123.el7) I see issues on s390x and ppc64: > > ======= > > 7.0 S s390x # stap -p4 ./buildok/nfsd-detailed.stp > semantic error: No cfa_ops supplied, but needed by DW_OP_call_frame_cfa: > identifier '$count' at /usr/share/systemtap/tapset/linux/nfsd.stp:1174:22 > source: count = kernel_long($count) > ^ > > Pass 2: analysis failed. [man error::pass2] > Number of similar error messages suppressed: 59. > Rerun with -v to see them. > > ======= > > 7.0 S ppc64 # stap -p4 ./buildok/nfsd-detailed.stp > semantic error: not accessible at this address (pc: 0x18178) [man > error::dwarf]: identifier '$rqstp' at > /usr/share/systemtap/tapset/linux/nfsd.stp:1099:33 > dieoffset: 0x4e67a from > /usr/lib/debug/lib/modules/3.10.0-123.el7.ppc64/kernel/fs/nfsd/nfsd.ko.debug > function: nfsd_open at fs/nfsd/vfs.c:814 inlined by nfsd_read at > fs/nfsd/vfs.c:1120 > alternative locations: [0x1818c,0x1819f], [0x1819f,0x18440], > [0x18440,0x1852c], [0x1852c,0x18634], [0x18634,0x18678], [0x18678,0x186bc], > [0x186bc,0x186cc], [0x186cc,0x186ec] > source: client_ip = addr_from_rqst_str($rqstp) > ^ > > Pass 2: analysis failed. [man error::pass2] > Number of similar error messages suppressed: 7. > Rerun with -v to see them. > > ======= > > This is a RHEL7 specific issue though. Feel free to clone this comment to a > separate BZ if you wish. This is certainly a different error and should be a different BZ. The original error here was a stap bug. The above issue looks like a debuginfo quality problem at first glance. Cloned the rhel7 part into bug 1107616. (In reply to David Smith from comment #1) > Upstream commit 6230ede fixes this issue. It should easily backport. Good to go for RHEL6. Thanks for the fix! 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. http://rhn.redhat.com/errata/RHBA-2014-1449.html |
On top of kernel-2.6.32-431.el6.i686 I see following regression: 6.5 S i686 # rpm -q systemtap; stap -p4 ./buildok/nfsd-detailed.stp systemtap-2.3-3.el6.i686 /root/.systemtap/cache/fa/stap_fa5c41f716dc3a5b382ce30b26675da9_217993.ko 6.5 S i686 # 6.5 S i686 # rpm -q systemtap; stap -p4 ./buildok/nfsd-detailed.stp systemtap-2.5-3.el6.i686 cc1: warnings being treated as errors /tmp/stapOXTcc9/stap_1a75912e2c19eb38f05c3b534d512b6f_218329_src.c: In function ‘function___rqstp_gid’: /tmp/stapOXTcc9/stap_1a75912e2c19eb38f05c3b534d512b6f_218329_src.c:6143: error: cast to pointer from integer of different size /tmp/stapOXTcc9/stap_1a75912e2c19eb38f05c3b534d512b6f_218329_src.c: In function ‘function___rqstp_uid’: /tmp/stapOXTcc9/stap_1a75912e2c19eb38f05c3b534d512b6f_218329_src.c:6185: error: cast to pointer from integer of different size make[2]: *** [/tmp/stapOXTcc9/stap_1a75912e2c19eb38f05c3b534d512b6f_218329_src.o] Error 1 make[1]: *** [_module_/tmp/stapOXTcc9] Error 2 WARNING: kbuild exited with status: 2 Pass 4: compilation failed. [man error::pass4] 6.5 S i686 # problematic parts: ------------------------ probe nfsd.proc2.rename, nfsd.proc3.rename, nfsd.proc4.rename ? { printf("%d %d\n", uid, gid) }