lsan test failures on armv7 bionic

[rovka]

1. SanitizerCommon-lsan-armhf-Linux :: hard_rss_limit_mb_test.cpp fails with:

==28399==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 152 byte(s) in 1 object(s) allocated from:
    #0 0x43db4 in __interceptor_calloc /home/tcwg-buildslave/workspace/tcwg-llvm-release/tcwg-tk1_32-build/rc1/llvm-project/compiler-rt/lib/lsan/lsan_interceptors.cpp:90:3
    #1 0xffc  (<unknown module>)
    #2 0xb6fa605c  (/lib/ld-linux-armhf.so.3+0x2905c) (BuildId: 2af654c87659358c065c71ae145b0dd682dee975)

SUMMARY: LeakSanitizer: 152 byte(s) leaked in 1 allocation(s).

2. SanitizerCommon-lsan-armhf-Linux :: compress_stack_depot.cpp fails with:

: 'RUN: at line 2';   env LSAN_OPTIONS="compress_stack_depot=0:malloc_context_size=128:verbosity=1"  /home/tcwg-buildslave/workspace/tcwg-llvm-release/tcwg-tk1_32-build/rc1/Phase3/Release/llvmCore-14.0.0-rc1.obj/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/lsan-armhf-Linux/Output/compress_stack_depot.cpp.tmp 2>&1 | FileCheck /home/tcwg-buildslave/workspace/tcwg-llvm-release/tcwg-tk1_32-build/rc1/llvm-project/compiler-rt/test/sanitizer_common/TestCases/compress_stack_depot.cpp --implicit-check-not="StackDepot released"
: 'RUN: at line 3';   env LSAN_OPTIONS="compress_stack_depot=-1:malloc_context_size=128:verbosity=1"  /home/tcwg-buildslave/workspace/tcwg-llvm-release/tcwg-tk1_32-build/rc1/Phase3/Release/llvmCore-14.0.0-rc1.obj/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/lsan-armhf-Linux/Output/compress_stack_depot.cpp.tmp 2>&1 | FileCheck /home/tcwg-buildslave/workspace/tcwg-llvm-release/tcwg-tk1_32-build/rc1/llvm-project/compiler-rt/test/sanitizer_common/TestCases/compress_stack_depot.cpp --check-prefixes=COMPRESS
: 'RUN: at line 4';   env LSAN_OPTIONS="compress_stack_depot=-2:malloc_context_size=128:verbosity=1"  /home/tcwg-buildslave/workspace/tcwg-llvm-release/tcwg-tk1_32-build/rc1/Phase3/Release/llvmCore-14.0.0-rc1.obj/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/lsan-armhf-Linux/Output/compress_stack_depot.cpp.tmp 2>&1 | FileCheck /home/tcwg-buildslave/workspace/tcwg-llvm-release/tcwg-tk1_32-build/rc1/llvm-project/compiler-rt/test/sanitizer_common/TestCases/compress_stack_depot.cpp --check-prefixes=COMPRESS
: 'RUN: at line 5';   env LSAN_OPTIONS="compress_stack_depot=1:malloc_context_size=128:verbosity=1"  /home/tcwg-buildslave/workspace/tcwg-llvm-release/tcwg-tk1_32-build/rc1/Phase3/Release/llvmCore-14.0.0-rc1.obj/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/lsan-armhf-Linux/Output/compress_stack_depot.cpp.tmp 2>&1 | FileCheck /home/tcwg-buildslave/workspace/tcwg-llvm-release/tcwg-tk1_32-build/rc1/llvm-project/compiler-rt/test/sanitizer_common/TestCases/compress_stack_depot.cpp --check-prefixes=COMPRESS,THREAD
: 'RUN: at line 6';   env LSAN_OPTIONS="compress_stack_depot=2:malloc_context_size=128:verbosity=1"  /home/tcwg-buildslave/workspace/tcwg-llvm-release/tcwg-tk1_32-build/rc1/Phase3/Release/llvmCore-14.0.0-rc1.obj/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/lsan-armhf-Linux/Output/compress_stack_depot.cpp.tmp 2>&1 | FileCheck /home/tcwg-buildslave/workspace/tcwg-llvm-release/tcwg-tk1_32-build/rc1/llvm-project/compiler-rt/test/sanitizer_common/TestCases/compress_stack_depot.cpp --check-prefixes=COMPRESS,THREAD
--
Exit Code: 23

Command Output (stderr):
--
clang-14: warning: argument unused during compilation: '-fsanitize-memory-track-origins=1' [-Wunused-command-line-argument]

[llvmbot]

@llvm/issue-subscribers-backend-arm

[DavidSpickett]

FWIW these two tests I have seen failing on our bots in general, but never with a specific cause. I suspected some kind of system load related issue.

Unfortunately I don't have the results to cite here. Do they fail when run serially?

It is passing on the silent bot at the moment https://lab.llvm.org/staging/#/builders/169/builds/151/steps/12/logs/stdio but I wouldn't take that to mean main has fixed this. Just that whatever issue hasn't presented there lately.

[tstellar]

This issue was not resolved in time for 14.0.0 and will need to be fixed in the next release (14.0.1). If you disagree with this or you feel there was a mistake, please change the milestone back to 'LLVM 14.0.0 Release' so we can discuss.