On 25/01/2024 10:10, Maxim Kuvyrkov wrote:
On Jan 25, 2024, at 04:08, ci_not...@linaro.org wrote:
Dear contributor, our automatic CI has detected problems related to your
patch(es). Please find some details below. If you have any questions, please
follow up on linaro-toolchain@lists.linaro.org mailing list, Libera's
#linaro-tcwg channel, or ping your favourite Linaro toolchain developer on the
usual project channel.
We appreciate that it might be difficult to find the necessary logs or
reproduce the issue locally. If you can't get what you need from our CI within
minutes, let us know and we will be happy to help.
We track this report status in https://linaro.atlassian.net/browse/GNU-1120 ,
please let us know if you are looking at the problem and/or when you have a fix.
In gdb_check master-arm after:
| commit gdb-14-branchpoint-1354-g8669a8b6740
| Author: Guinevere Larsen <blar...@redhat.com>
| Date: Thu Aug 24 11:00:35 2023 +0200
|
| gdb/testsuite: add test for backtracing for threaded inferiors from a
corefile
|
| This patch is based on an out-of-tree patch that fedora has been
| carrying for a while. It tests if GDB is able to properly unwind a
| threaded program in the following situations:
| * regular threads
| * in a signal handler
| ... 14 lines of the commit log omitted.
FAIL: 2 regressions
regressions.sum:
=== gdb tests ===
Running gdb:gdb.threads/threadcrash.exp ...
FAIL: gdb.threads/threadcrash.exp: test_gcore: $thread_count == 7
FAIL: gdb.threads/threadcrash.exp: test_gcore: $thread_count == [llength
$test_list]
Hi Guinevere,
The failures seem to be due to "LWP" output (instead of "Thread") in test_gcore.
I.e., test_corefile succeeds with
===
(gdb) PASS: gdb.threads/threadcrash.exp: test_corefile: loading_corefile
info threads
Id Target Id Frame
* 1 Thread 0xf7dbe7e0 (LWP 476389) 0x00830cea in crash_function () at
/home/tcwg-buildslave/workspace/tcwg_gnu_4/abe/snapshots/gdb.git~master/gdb/testsuite/gdb.threads/threadcrash.c:381
2 Thread 0xf7c6f3a0 (LWP 476390) do_spin_task (location=NORMAL) at
/home/tcwg-buildslave/workspace/tcwg_gnu_4/abe/snapshots/gdb.git~master/gdb/testsuite/gdb.threads/threadcrash.c:139
3 Thread 0xf746e3a0 (LWP 476391) do_spin_task (location=SIGNAL_HANDLER)
at
/home/tcwg-buildslave/workspace/tcwg_gnu_4/abe/snapshots/gdb.git~master/gdb/testsuite/gdb.threads/threadcrash.c:139
4 Thread 0xf6c6d3a0 (LWP 476392) do_spin_task (location=SIGNAL_ALT_STACK)
at
/home/tcwg-buildslave/workspace/tcwg_gnu_4/abe/snapshots/gdb.git~master/gdb/testsuite/gdb.threads/threadcrash.c:139
5 Thread 0xf52fe3a0 (LWP 476395) __libc_do_syscall () at
../sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:46
6 Thread 0xf646c3a0 (LWP 476393) __libc_do_syscall () at
../sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:46
7 Thread 0xf5aff3a0 (LWP 476394) __libc_do_syscall () at
../sysdeps/unix/sysv/linux/arm/libc-do-syscall.S:46
(gdb) PASS: gdb.threads/threadcrash.exp: test_corefile: $thread_count == 7
===
and then test_gcore fails with
===
(gdb) PASS: gdb.threads/threadcrash.exp: test_gcore: loading_corefile
info threads
Id Target Id Frame
* 1 LWP 476440 0x00400cea in crash_function () at
/home/tcwg-buildslave/workspace/tcwg_gnu_4/abe/snapshots/gdb.git~master/gdb/testsuite/gdb.threads/threadcrash.c:381
2 LWP 476442 do_spin_task (location=NORMAL) at
/home/tcwg-buildslave/workspace/tcwg_gnu_4/abe/snapshots/gdb.git~master/gdb/testsuite/gdb.threads/threadcrash.c:139
3 LWP 476443 do_spin_task (location=SIGNAL_HANDLER) at
/home/tcwg-buildslave/workspace/tcwg_gnu_4/abe/snapshots/gdb.git~master/gdb/testsuite/gdb.threads/threadcrash.c:139
4 LWP 476444 do_spin_task (location=SIGNAL_ALT_STACK) at
/home/tcwg-buildslave/workspace/tcwg_gnu_4/abe/snapshots/gdb.git~master/gdb/testsuite/gdb.threads/threadcrash.c:139
5 LWP 476445 0xf7eadb04 in ?? ()
6 LWP 476446 0xf7eadb04 in ?? ()
7 LWP 476447 0xf7eadb04 in ?? ()
(gdb) FAIL: gdb.threads/threadcrash.exp: test_gcore: $thread_count == 7
===
Could you please look into fixing the testcase? [I assume "LWP" output is
expected, but I'm not an expert in GDB.]
So I looked into this and there are 2 problems here. First is that the
test isn't able to count the 7 thread, and second is that GDB is failing
to unwind 3 of the threads.
Only the first one may be a test issue, and I'm trying to look into
that. The second one is a gdb problem either when generating the gcore
or when reading it. I'll open a bug and make the test KFAIL instead of
FAIL here, since it isn't a simple fix. Just to confirm, before I say
something incorrect in the bug report, this bug happens for 32-bit arm,
right?
Also, I read the Jira comments and just wanted to mention I go by
she/her pronouns :)
--
Cheers,
Guinevere Larsen
She/Her/Hers
Thanks!
--
Maxim Kuvyrkov
https://www.linaro.org
=== Results Summary ===
You can find the failure logs in *.log.1.xz files in
-
https://ci.linaro.org/job/tcwg_gdb_check--master-arm-build/726/artifact/artifacts/00-sumfiles/
.
The full lists of regressions and progressions are in
-
https://ci.linaro.org/job/tcwg_gdb_check--master-arm-build/726/artifact/artifacts/notify/
.
The list of [ignored] baseline and flaky failures are in
-
https://ci.linaro.org/job/tcwg_gdb_check--master-arm-build/726/artifact/artifacts/sumfiles/xfails.xfail
.
The configuration of this build is:
CI config tcwg_gdb_check master-arm
-----------------8<--------------------------8<--------------------------8<--------------------------
The information below can be used to reproduce a debug environment:
Current build :
https://ci.linaro.org/job/tcwg_gdb_check--master-arm-build/726/artifact/artifacts
Reference build :
https://ci.linaro.org/job/tcwg_gdb_check--master-arm-build/724/artifact/artifacts
Reproduce last good and first bad builds:
https://git-us.linaro.org/toolchain/ci/interesting-commits.git/plain/gdb/sha1/8669a8b67408c11d6bf77a09c6aa733f7150abed/tcwg_gdb_check/master-arm/reproduction_instructions.txt
Full commit :
https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=8669a8b67408c11d6bf77a09c6aa733f7150abed
List of configurations that regressed due to this commit :
* tcwg_gdb_check
** master-arm
*** FAIL: 2 regressions
***
https://git-us.linaro.org/toolchain/ci/interesting-commits.git/plain/gdb/sha1/8669a8b67408c11d6bf77a09c6aa733f7150abed/tcwg_gdb_check/master-arm/details.txt
***
https://ci.linaro.org/job/tcwg_gdb_check--master-arm-build/726/artifact/artifacts
_______________________________________________
linaro-toolchain mailing list -- linaro-toolchain@lists.linaro.org
To unsubscribe send an email to linaro-toolchain-le...@lists.linaro.org
