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-
-qemu-aarch64 MTE fails to report tag mismatch
-
-Hi,
-
-While running the GCC testsuite with qemu-6.0 as simulator, I noticed several errors in the hwasan testsuite (output pattern tests).
-
-I am attaching:
-bitfield-2.exe
-ld-linux-aarch64.so.1
-libc.so.6
-libdl.so.2
-libhwasan.so.0
-libm.so.6
-libpthread.so.0
-librt.so.1
-
-The testcase can be executed via:
-qemu-aarch64 -L . bitfield-2.exe
-
-it currently generates:
-HWAddressSanitizer:DEADLYSIGNAL
-==21137==ERROR: HWAddressSanitizer: SEGV on unknown address 0x0000000000f0 (pc 0x00550084e318 bp 0x005f01650d00 sp 0x005f01650d00 T21137)
-==21137==The signal is caused by a UNKNOWN memory access.
-==21137==Hint: address points to the zero page.
- #0 0x550084e318 in GetAccessInfo /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/libsanitizer/hwasan/hwasan_linux.cpp:339
- #1 0x550084e318 in HwasanOnSIGTRAP /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/libsanitizer/hwasan/hwasan_linux.cpp:401
- #2 0x550084e318 in __hwasan::HwasanOnDeadlySignal(int, void*, void*) /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/libsanitizer/hwasan/hwasan_linux.cpp:426
- #3 0x5f01651fec (<unknown module>)
- #4 0x550084b508 in __hwasan_load2 /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/libsanitizer/hwasan/hwasan.cpp:379
- #5 0x400768 in f /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/gcc/testsuite/c-c++-common/hwasan/bitfield-2.c:17
- #6 0x4007d0 in main /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/gcc/testsuite/c-c++-common/hwasan/bitfield-2.c:24
- #7 0x550124cee0 in __libc_start_main ../csu/libc-start.c:308
- #8 0x400688 (/home/christophe.lyon/qemu-bug-hwasan-aarch64/bitfield-2.exe+0x400688)
-
-HWAddressSanitizer can not provide additional info.
-SUMMARY: HWAddressSanitizer: SEGV /home/christophe.lyon/src/GCC/sources/gcc-fsf-git/trunk/libsanitizer/hwasan/hwasan_linux.cpp:339 in GetAccessInfo
-==21146==ABORTING
-
-while the testcase expects HWAddressSanitizer: tag-mismatch on address 0x.....
-
-
-
-You missed including libstdc++.so.6.
-I ran with whatever libstdc++ I had lying around.
-
-With qemu head, this terminates with
-
-~/qemu/bld/qemu-aarch64 -L . ./bitfield-2.exe
-*** stack smashing detected ***: terminated
-qemu: uncaught target signal 6 (Aborted) - core dumped
-Aborted
-
-I suspect the relevant MTE portion of this bug report
-to be a duplicate of a kasan bug, the fix for which did
-not make 6.0, but has since been committed as 09641ef93112.
-
-Sorry, I didn't think about rpath when I tried to execute what I had extracted.
-Here are the additional libstdc++.so.6 and libgcc_s.so.1.
-
-I am using a more recent qemu version than 6.0, almost head: d45a5270d075ea589f0b0ddcf963a5fea1f500ac
-
-
-
-