llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-s390x-linux` running 
on `systemz-1` while building `clang,llvm` at step 5 "ninja check 1".

Full details are available at: 
https://lab.llvm.org/buildbot/#/builders/42/builds/3933

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 5 (ninja check 1) failure: stage 1 checked (failure)
******************** TEST 'libFuzzer-s390x-default-Linux :: 
fuzzer-timeout.test' FAILED ********************
Exit Code: 1

Command Output (stderr):
--
/home/uweigand/sandbox/buildbot/clang-s390x-linux/stage1/./bin/clang    
-Wthread-safety -Wthread-safety-reference -Wthread-safety-beta   
--driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer 
-I/home/uweigand/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/lib/fuzzer 
 
/home/uweigand/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/TimeoutTest.cpp
 -o 
/home/uweigand/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutTest
 # RUN: at line 1
+ /home/uweigand/sandbox/buildbot/clang-s390x-linux/stage1/./bin/clang 
-Wthread-safety -Wthread-safety-reference -Wthread-safety-beta 
--driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer 
-I/home/uweigand/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/lib/fuzzer 
/home/uweigand/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/TimeoutTest.cpp
 -o 
/home/uweigand/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutTest
/home/uweigand/sandbox/buildbot/clang-s390x-linux/stage1/./bin/clang    
-Wthread-safety -Wthread-safety-reference -Wthread-safety-beta   
--driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer 
-I/home/uweigand/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/lib/fuzzer 
 
/home/uweigand/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/TimeoutEmptyTest.cpp
 -o 
/home/uweigand/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutEmptyTest
 # RUN: at line 2
+ /home/uweigand/sandbox/buildbot/clang-s390x-linux/stage1/./bin/clang 
-Wthread-safety -Wthread-safety-reference -Wthread-safety-beta 
--driver-mode=g++ -O2 -gline-tables-only -fsanitize=address,fuzzer 
-I/home/uweigand/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/lib/fuzzer 
/home/uweigand/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/TimeoutEmptyTest.cpp
 -o 
/home/uweigand/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutEmptyTest
not  
/home/uweigand/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutTest
 -timeout=1 2>&1 | FileCheck 
/home/uweigand/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/fuzzer-timeout.test
 --check-prefix=TimeoutTest # RUN: at line 3
+ not 
/home/uweigand/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutTest
 -timeout=1
+ FileCheck 
/home/uweigand/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/fuzzer-timeout.test
 --check-prefix=TimeoutTest
not  
/home/uweigand/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutTest
 -timeout=1 
/home/uweigand/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/hi.txt
 2>&1 | FileCheck 
/home/uweigand/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/fuzzer-timeout.test
 --check-prefix=SingleInputTimeoutTest # RUN: at line 12
+ not 
/home/uweigand/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutTest
 -timeout=1 
/home/uweigand/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/hi.txt
+ FileCheck 
/home/uweigand/sandbox/buildbot/clang-s390x-linux/llvm/compiler-rt/test/fuzzer/fuzzer-timeout.test
 --check-prefix=SingleInputTimeoutTest
/home/uweigand/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutTest
 -timeout=1 -timeout_exitcode=0 # RUN: at line 16
+ 
/home/uweigand/sandbox/buildbot/clang-s390x-linux/stage1/runtimes/runtimes-bins/compiler-rt/test/fuzzer/S390XDefaultLinuxConfig/Output/fuzzer-timeout.test.tmp-TimeoutTest
 -timeout=1 -timeout_exitcode=0
INFO: Running with entropic power schedule (0xFF, 100).
INFO: Seed: 3845018601
INFO: Loaded 1 modules   (13 inline 8-bit counters): 13 [0x2aa1be50e88, 
0x2aa1be50e95), 
INFO: Loaded 1 PC tables (13 PCs): 13 [0x2aa1be50e98,0x2aa1be50f68), 
INFO: -max_len is not provided; libFuzzer will not generate inputs larger than 
4096 bytes
INFO: A corpus is not provided, starting from an empty corpus
#2      INITED cov: 2 ft: 2 corp: 1/1b exec/s: 0 rss: 31Mb
#889    NEW    cov: 3 ft: 3 corp: 2/2b lim: 11 exec/s: 0 rss: 32Mb L: 1/1 MS: 2 
ChangeByte-ChangeBit-
#920    NEW    cov: 4 ft: 4 corp: 3/4b lim: 11 exec/s: 0 rss: 32Mb L: 2/2 MS: 1 
CopyPart-
#5157   NEW    cov: 5 ft: 5 corp: 4/6b lim: 48 exec/s: 0 rss: 32Mb L: 2/2 MS: 2 
CopyPart-ChangeByte-
#5213   NEW    cov: 6 ft: 6 corp: 5/30b lim: 48 exec/s: 0 rss: 32Mb L: 24/24 
MS: 1 InsertRepeatedBytes-
#5216   REDUCE cov: 6 ft: 6 corp: 5/27b lim: 48 exec/s: 0 rss: 32Mb L: 21/21 
MS: 3 InsertRepeatedBytes-CMP-EraseBytes- DE: "\000\000\000\000\000\000\000/"-
#5252   REDUCE cov: 6 ft: 6 corp: 5/26b lim: 48 exec/s: 0 rss: 32Mb L: 20/20 
MS: 1 EraseBytes-
#5275   REDUCE cov: 6 ft: 6 corp: 5/18b lim: 48 exec/s: 0 rss: 32Mb L: 12/12 
MS: 3 ChangeBit-ChangeByte-EraseBytes-
#5419   REDUCE cov: 6 ft: 6 corp: 5/16b lim: 48 exec/s: 0 rss: 32Mb L: 10/10 
MS: 4 ShuffleBytes-CrossOver-ChangeBit-EraseBytes-
#5665   REDUCE cov: 6 ft: 6 corp: 5/12b lim: 48 exec/s: 0 rss: 32Mb L: 6/6 MS: 
1 EraseBytes-
#5811   REDUCE cov: 6 ft: 6 corp: 5/9b lim: 48 exec/s: 0 rss: 32Mb L: 3/3 MS: 1 
EraseBytes-
ALARM: working on the last Unit for 1 seconds
       and the timeout value is 1 (use -timeout=N to change)
MS: 2 ChangeBit-ChangeBit-; base unit: d0c024ef2b7b748a5af917ab7fd801b15d318c88
0x48,0x69,0x21,
Hi!
artifact_prefix='./'; Test unit written to 
./timeout-c0a0ad26a634840c67a210fefdda76577b03a111
Base64: SGkh
==1840255== ERROR: libFuzzer: timeout after 1 seconds
AddressSanitizer:DEADLYSIGNAL
=================================================================
AddressSanitizer:DEADLYSIGNAL
=================================================================
AddressSanitizer: CHECK failed: asan_report.cpp:199 "((current_error_.kind)) == 
((kErrorKindInvalid))" (0x1, 0x0) (tid=1840255)
    <empty stack>

MS: 2 ChangeBit-ChangeBit-; base unit: d0c024ef2b7b748a5af917ab7fd801b15d318c88
...

```

</details>

https://github.com/llvm/llvm-project/pull/133265
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