[Bug sanitizer/101744] New: [12 regression] hwasan new failures since r12-2424

[clyon at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101744

            Bug ID: 101744
           Summary: [12 regression] hwasan new failures since r12-2424
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: sanitizer
          Assignee: unassigned at gcc dot gnu.org
          Reporter: clyon at gcc dot gnu.org
                CC: dodji at gcc dot gnu.org, dvyukov at gcc dot gnu.org,
                    jakub at gcc dot gnu.org, kcc at gcc dot gnu.org, marxin at gcc dot gnu.org
  Target Milestone: ---

Since r12-2424, I've noticed new failures in hwasan tests on aarch64 (I'm
testing a cross-compiler using QEMU, but it seems the same failures are
reported by native testers on gcc-testresults)

The patch seems to have enabled many new tests, some of which fail:

    c-c++-common/hwasan/alloca-gets-different-tag.c   -O2 -flto
-fuse-linker-plugin -fno-fat-lto-objects  execution test
    c-c++-common/hwasan/alloca-outside-caught.c   -O0  output pattern test
    c-c++-common/hwasan/alloca-outside-caught.c   -O1  output pattern test
    c-c++-common/hwasan/alloca-outside-caught.c   -O2  output pattern test
    c-c++-common/hwasan/alloca-outside-caught.c   -O2 -flto
-fno-use-linker-plugin -flto-partition=none  output pattern test
    c-c++-common/hwasan/alloca-outside-caught.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/alloca-outside-caught.c   -O3 -g  output pattern test
    c-c++-common/hwasan/alloca-outside-caught.c   -Os  output pattern test
    c-c++-common/hwasan/asan-pr70541.c   -O0  output pattern test
    c-c++-common/hwasan/bitfield-2.c   -O0  output pattern test
    c-c++-common/hwasan/bitfield-2.c   -O1  output pattern test
    c-c++-common/hwasan/bitfield-2.c   -O2  output pattern test
    c-c++-common/hwasan/bitfield-2.c   -O2 -flto -fno-use-linker-plugin
-flto-partition=none  output pattern test
    c-c++-common/hwasan/bitfield-2.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/bitfield-2.c   -O3 -g  output pattern test
    c-c++-common/hwasan/bitfield-2.c   -Os  output pattern test
    c-c++-common/hwasan/halt_on_error-1.c   -O0  output pattern test
    c-c++-common/hwasan/halt_on_error-1.c   -O1  output pattern test
    c-c++-common/hwasan/halt_on_error-1.c   -O2  output pattern test
    c-c++-common/hwasan/halt_on_error-1.c   -O2 -flto -fno-use-linker-plugin
-flto-partition=none  output pattern test
    c-c++-common/hwasan/halt_on_error-1.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/halt_on_error-1.c   -O3 -g  output pattern test
    c-c++-common/hwasan/halt_on_error-1.c   -Os  output pattern test
    c-c++-common/hwasan/heap-overflow.c   -O0  output pattern test
    c-c++-common/hwasan/heap-overflow.c   -O1  output pattern test
    c-c++-common/hwasan/heap-overflow.c   -O2  output pattern test
    c-c++-common/hwasan/heap-overflow.c   -O2 -flto -fno-use-linker-plugin
-flto-partition=none  output pattern test
    c-c++-common/hwasan/heap-overflow.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/heap-overflow.c   -O3 -g  output pattern test
    c-c++-common/hwasan/heap-overflow.c   -Os  output pattern test
    c-c++-common/hwasan/hwasan-thread-access-parent.c   -O0  output pattern
test
    c-c++-common/hwasan/hwasan-thread-access-parent.c   -O1  output pattern
test
    c-c++-common/hwasan/hwasan-thread-access-parent.c   -O2  output pattern
test
    c-c++-common/hwasan/hwasan-thread-access-parent.c   -O2 -flto
-fno-use-linker-plugin -flto-partition=none  output pattern test
    c-c++-common/hwasan/hwasan-thread-access-parent.c   -O2 -flto
-fuse-linker-plugin -fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/hwasan-thread-access-parent.c   -O3 -g  output pattern
test
    c-c++-common/hwasan/hwasan-thread-access-parent.c   -Os  output pattern
test
    c-c++-common/hwasan/hwasan-thread-basic-failure.c   -O0  output pattern
test
    c-c++-common/hwasan/hwasan-thread-basic-failure.c   -O1  output pattern
test
    c-c++-common/hwasan/hwasan-thread-basic-failure.c   -O2  output pattern
test
    c-c++-common/hwasan/hwasan-thread-basic-failure.c   -O2 -flto
-fno-use-linker-plugin -flto-partition=none  output pattern test
    c-c++-common/hwasan/hwasan-thread-basic-failure.c   -O2 -flto
-fuse-linker-plugin -fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/hwasan-thread-basic-failure.c   -O3 -g  output pattern
test
    c-c++-common/hwasan/hwasan-thread-basic-failure.c   -Os  output pattern
test
    c-c++-common/hwasan/hwasan-thread-clears-stack.c   -O0  output pattern test
    c-c++-common/hwasan/hwasan-thread-clears-stack.c   -O1  output pattern test
    c-c++-common/hwasan/hwasan-thread-clears-stack.c   -O2  output pattern test
    c-c++-common/hwasan/hwasan-thread-clears-stack.c   -O2 -flto
-fno-use-linker-plugin -flto-partition=none  output pattern test
    c-c++-common/hwasan/hwasan-thread-clears-stack.c   -O2 -flto
-fuse-linker-plugin -fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/hwasan-thread-clears-stack.c   -O3 -g  output pattern
test
    c-c++-common/hwasan/hwasan-thread-clears-stack.c   -Os  output pattern test
    c-c++-common/hwasan/large-aligned-1.c   -O0  output pattern test
    c-c++-common/hwasan/large-aligned-1.c   -O1  output pattern test
    c-c++-common/hwasan/large-aligned-1.c   -O2  output pattern test
    c-c++-common/hwasan/large-aligned-1.c   -O2 -flto -fno-use-linker-plugin
-flto-partition=none  output pattern test
    c-c++-common/hwasan/large-aligned-1.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/large-aligned-1.c   -O3 -g  output pattern test
    c-c++-common/hwasan/large-aligned-1.c   -Os  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-0.c   -O0  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-0.c   -O1  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-0.c   -O2  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-0.c   -O2 -flto
-fno-use-linker-plugin -flto-partition=none  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-0.c   -O2 -flto
-fuse-linker-plugin -fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-0.c   -O3 -g  output pattern
test
    c-c++-common/hwasan/large-aligned-untagging-0.c   -Os  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-1.c   -O0  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-1.c   -O1  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-1.c   -O2  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-1.c   -O2 -flto
-fno-use-linker-plugin -flto-partition=none  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-1.c   -O2 -flto
-fuse-linker-plugin -fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-1.c   -O3 -g  output pattern
test
    c-c++-common/hwasan/large-aligned-untagging-1.c   -Os  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-2.c   -O0  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-2.c   -O1  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-2.c   -O2  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-2.c   -O2 -flto
-fno-use-linker-plugin -flto-partition=none  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-2.c   -O2 -flto
-fuse-linker-plugin -fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-2.c   -O3 -g  output pattern
test
    c-c++-common/hwasan/large-aligned-untagging-2.c   -Os  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-3.c   -O0  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-3.c   -O1  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-3.c   -O2  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-3.c   -O2 -flto
-fno-use-linker-plugin -flto-partition=none  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-3.c   -O2 -flto
-fuse-linker-plugin -fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-3.c   -O3 -g  output pattern
test
    c-c++-common/hwasan/large-aligned-untagging-3.c   -Os  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-4.c   -O0  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-4.c   -O1  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-4.c   -O2  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-4.c   -O2 -flto
-fno-use-linker-plugin -flto-partition=none  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-4.c   -O2 -flto
-fuse-linker-plugin -fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-4.c   -O3 -g  output pattern
test
    c-c++-common/hwasan/large-aligned-untagging-4.c   -Os  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-5.c   -O0  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-5.c   -O1  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-5.c   -O2  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-5.c   -O2 -flto
-fno-use-linker-plugin -flto-partition=none  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-5.c   -O2 -flto
-fuse-linker-plugin -fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-5.c   -O3 -g  output pattern
test
    c-c++-common/hwasan/large-aligned-untagging-5.c   -Os  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-6.c   -O0  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-6.c   -O1  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-6.c   -O2  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-6.c   -O2 -flto
-fno-use-linker-plugin -flto-partition=none  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-6.c   -O2 -flto
-fuse-linker-plugin -fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-6.c   -O3 -g  output pattern
test
    c-c++-common/hwasan/large-aligned-untagging-6.c   -Os  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-7.c   -O0  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-7.c   -O1  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-7.c   -O2  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-7.c   -O2 -flto
-fno-use-linker-plugin -flto-partition=none  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-7.c   -O2 -flto
-fuse-linker-plugin -fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/large-aligned-untagging-7.c   -O3 -g  output pattern
test
    c-c++-common/hwasan/large-aligned-untagging-7.c   -Os  output pattern test
    c-c++-common/hwasan/sanity-check-pure-c.c   -O0  output pattern test
    c-c++-common/hwasan/sanity-check-pure-c.c   -O1  output pattern test
    c-c++-common/hwasan/sanity-check-pure-c.c   -O2  output pattern test
    c-c++-common/hwasan/sanity-check-pure-c.c   -O2 -flto
-fno-use-linker-plugin -flto-partition=none  output pattern test
    c-c++-common/hwasan/sanity-check-pure-c.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/sanity-check-pure-c.c   -O3 -g  output pattern test
    c-c++-common/hwasan/sanity-check-pure-c.c   -Os  output pattern test
    c-c++-common/hwasan/setjmp-longjmp-1.c   -O0  output pattern test
    c-c++-common/hwasan/setjmp-longjmp-1.c   -O1  output pattern test
    c-c++-common/hwasan/setjmp-longjmp-1.c   -O2  output pattern test
    c-c++-common/hwasan/setjmp-longjmp-1.c   -O2 -flto -fno-use-linker-plugin
-flto-partition=none  output pattern test
    c-c++-common/hwasan/setjmp-longjmp-1.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/setjmp-longjmp-1.c   -O3 -g  output pattern test
    c-c++-common/hwasan/setjmp-longjmp-1.c   -Os  output pattern test
    c-c++-common/hwasan/stack-tagging-basic-1.c   -O0  output pattern test
    c-c++-common/hwasan/stack-tagging-basic-1.c   -O1  output pattern test
    c-c++-common/hwasan/stack-tagging-basic-1.c   -O2  output pattern test
    c-c++-common/hwasan/stack-tagging-basic-1.c   -O2 -flto
-fno-use-linker-plugin -flto-partition=none  output pattern test
    c-c++-common/hwasan/stack-tagging-basic-1.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/stack-tagging-basic-1.c   -O3 -g  output pattern test
    c-c++-common/hwasan/stack-tagging-basic-1.c   -Os  output pattern test
    c-c++-common/hwasan/use-after-free.c   -O0  output pattern test
    c-c++-common/hwasan/use-after-free.c   -O1  output pattern test
    c-c++-common/hwasan/use-after-free.c   -O2  output pattern test
    c-c++-common/hwasan/use-after-free.c   -O2 -flto -fno-use-linker-plugin
-flto-partition=none  output pattern test
    c-c++-common/hwasan/use-after-free.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/use-after-free.c   -O3 -g  output pattern test
    c-c++-common/hwasan/use-after-free.c   -Os  output pattern test
    c-c++-common/hwasan/vararray-outside-caught.c   -O0  output pattern test
    c-c++-common/hwasan/vararray-outside-caught.c   -O1  output pattern test
    c-c++-common/hwasan/vararray-outside-caught.c   -O2  output pattern test
    c-c++-common/hwasan/vararray-outside-caught.c   -O2 -flto
-fno-use-linker-plugin -flto-partition=none  output pattern test
    c-c++-common/hwasan/vararray-outside-caught.c   -O2 -flto
-fuse-linker-plugin -fno-fat-lto-objects  output pattern test
    c-c++-common/hwasan/vararray-outside-caught.c   -O3 -g  output pattern test
    c-c++-common/hwasan/vararray-outside-caught.c   -Os  output pattern test
    gcc.dg/hwasan/nested-functions-1.c   -O0  output pattern test
    gcc.dg/hwasan/nested-functions-1.c   -O1  output pattern test
    gcc.dg/hwasan/nested-functions-1.c   -O2  output pattern test
    gcc.dg/hwasan/nested-functions-1.c   -O2 -flto -fno-use-linker-plugin
-flto-partition=none  output pattern test
    gcc.dg/hwasan/nested-functions-1.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  output pattern test
    gcc.dg/hwasan/nested-functions-1.c   -O3 -g  output pattern test
    gcc.dg/hwasan/nested-functions-1.c   -Os  output pattern test
    gcc.dg/hwasan/nested-functions-2.c   -O0  output pattern test
    gcc.dg/hwasan/nested-functions-2.c   -O1  output pattern test
    gcc.dg/hwasan/nested-functions-2.c   -O2  output pattern test
    gcc.dg/hwasan/nested-functions-2.c   -O2 -flto -fno-use-linker-plugin
-flto-partition=none  output pattern test
    gcc.dg/hwasan/nested-functions-2.c   -O2 -flto -fuse-linker-plugin
-fno-fat-lto-objects  output pattern test
    gcc.dg/hwasan/nested-functions-2.c   -O3 -g  output pattern test
    gcc.dg/hwasan/nested-functions-2.c   -Os  output pattern test