AddressSanitizer: fix heap-use-after-free crash in disableCacheTest() #895
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Fixes the following heap-use-after-free crash:
==21739==ERROR: AddressSanitizer: heap-use-after-free on address 0x61400003c8f1 at pc 0x000000825f62 bp 0x7fffc21a8990 sp 0x7fffc21a8980
READ of size 1 at 0x61400003c8f1 thread T0
#0 0x825f61 in rtFileDownloadRequest::isDataCached() /home/sw/projects/pxscene/pxCore/src/rtFileDownloader.cpp:366
#1 0x665424 in rtFileDownloaderTest::disableCacheTest() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/test_imagecache.cpp:893
#2 0x64dd3b in rtFileDownloaderTest_checkCacheTests_Test::TestBody() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/test_imagecache.cpp:1229
#3 0x7ad278 in void testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x7ad278)
#4 0x7a0938 in void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2438
#5 0x75d4cd in testing::Test::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2474
#6 0x75e7b9 in testing::TestInfo::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2656
#7 0x75f332 in testing::TestCase::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2774
#8 0x76fed0 in testing::internal::UnitTestImpl::RunAllTests() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:4649
#9 0x7afcb7 in bool testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2402
#10 0x7a2a97 in bool testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x7a2a97)
#11 0x76d0d9 in testing::UnitTest::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:4257
#12 0x5299db in RUN_ALL_TESTS() (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x5299db)
#13 0x5295c7 in main /home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtestsmain.cpp:101
#14 0x7f1b7c57f009 in __libc_start_main (/lib64/libc.so.6+0x21009)
#15 0x5293c9 in _start (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x5293c9)
0x61400003c8f1 is located 177 bytes inside of 448-byte region [0x61400003c840,0x61400003ca00)
freed by thread T0 here:
#0 0x7f1b8234efd0 in operator delete(void*) (/lib64/libasan.so.4+0xe0fd0)
#1 0x8272ca in rtFileDownloader::downloadFile(rtFileDownloadRequest*) /home/sw/projects/pxscene/pxCore/src/rtFileDownloader.cpp:630
#2 0x665415 in rtFileDownloaderTest::disableCacheTest() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/test_imagecache.cpp:892
#3 0x64dd3b in rtFileDownloaderTest_checkCacheTests_Test::TestBody() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/test_imagecache.cpp:1229
#4 0x7ad278 in void testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x7ad278)
#5 0x7a0938 in void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2438
#6 0x75d4cd in testing::Test::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2474
#7 0x75e7b9 in testing::TestInfo::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2656
#8 0x75f332 in testing::TestCase::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2774
#9 0x76fed0 in testing::internal::UnitTestImpl::RunAllTests() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:4649
#10 0x7afcb7 in bool testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2402
#11 0x7a2a97 in bool testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x7a2a97)
#12 0x76d0d9 in testing::UnitTest::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:4257
#13 0x5299db in RUN_ALL_TESTS() (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x5299db)
#14 0x5295c7 in main /home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtestsmain.cpp:101
#15 0x7f1b7c57f009 in __libc_start_main (/lib64/libc.so.6+0x21009)
previously allocated by thread T0 here:
#0 0x7f1b8234e158 in operator new(unsigned long) (/lib64/libasan.so.4+0xe0158)
#1 0x6653b0 in rtFileDownloaderTest::disableCacheTest() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/test_imagecache.cpp:889
#2 0x64dd3b in rtFileDownloaderTest_checkCacheTests_Test::TestBody() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/test_imagecache.cpp:1229
#3 0x7ad278 in void testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x7ad278)
#4 0x7a0938 in void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::*)(), char const*) /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2438
#5 0x75d4cd in testing::Test::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2474
#6 0x75e7b9 in testing::TestInfo::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2656
#7 0x75f332 in testing::TestCase::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2774
#8 0x76fed0 in testing::internal::UnitTestImpl::RunAllTests() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:4649
#9 0x7afcb7 in bool testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2402
#10 0x7a2a97 in bool testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::*)(), char const*) (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x7a2a97)
#11 0x76d0d9 in testing::UnitTest::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:4257
#12 0x5299db in RUN_ALL_TESTS() (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x5299db)
#13 0x5295c7 in main /home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtestsmain.cpp:101
#14 0x7f1b7c57f009 in __libc_start_main (/lib64/libc.so.6+0x21009)
SUMMARY: AddressSanitizer: heap-use-after-free /home/sw/projects/pxscene/pxCore/src/rtFileDownloader.cpp:366 in rtFileDownloadRequest::isDataCached()
Shadow bytes around the buggy address:
0x0c287ffff8c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c287ffff8d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c287ffff8e0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c287ffff8f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c287ffff900: fa fa fa fa fa fa fa fa fd fd fd fd fd fd fd fd
=>0x0c287ffff910: fd fd fd fd fd fd fd fd fd fd fd fd fd fd[fd]fd
0x0c287ffff920: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c287ffff930: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c287ffff940: fa fa fa fa fa fa fa fa fd fd fd fd fd fd fd fd
0x0c287ffff950: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c287ffff960: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
==21739==ABORTING
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Fixes the following heap-use-after-free crash:
==21739==ERROR: AddressSanitizer: heap-use-after-free on address 0x61400003c8f1 at pc 0x000000825f62 bp 0x7fffc21a8990 sp 0x7fffc21a8980
READ of size 1 at 0x61400003c8f1 thread T0
#0 0x825f61 in rtFileDownloadRequest::isDataCached() /home/sw/projects/pxscene/pxCore/src/rtFileDownloader.cpp:366
#1 0x665424 in rtFileDownloaderTest::disableCacheTest() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/test_imagecache.cpp:893
#2 0x64dd3b in rtFileDownloaderTest_checkCacheTests_Test::TestBody() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/test_imagecache.cpp:1229
#3 0x7ad278 in void testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::)(), char const) (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x7ad278)
#4 0x7a0938 in void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::)(), char const) /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2438
#5 0x75d4cd in testing::Test::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2474
#6 0x75e7b9 in testing::TestInfo::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2656
#7 0x75f332 in testing::TestCase::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2774
#8 0x76fed0 in testing::internal::UnitTestImpl::RunAllTests() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:4649
#9 0x7afcb7 in bool testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::)(), char const) /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2402
#10 0x7a2a97 in bool testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::)(), char const) (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x7a2a97)
#11 0x76d0d9 in testing::UnitTest::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:4257
#12 0x5299db in RUN_ALL_TESTS() (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x5299db)
#13 0x5295c7 in main /home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtestsmain.cpp:101
#14 0x7f1b7c57f009 in __libc_start_main (/lib64/libc.so.6+0x21009)
#15 0x5293c9 in _start (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x5293c9)
0x61400003c8f1 is located 177 bytes inside of 448-byte region [0x61400003c840,0x61400003ca00)
freed by thread T0 here:
#0 0x7f1b8234efd0 in operator delete(void*) (/lib64/libasan.so.4+0xe0fd0)
#1 0x8272ca in rtFileDownloader::downloadFile(rtFileDownloadRequest*) /home/sw/projects/pxscene/pxCore/src/rtFileDownloader.cpp:630
#2 0x665415 in rtFileDownloaderTest::disableCacheTest() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/test_imagecache.cpp:892
#3 0x64dd3b in rtFileDownloaderTest_checkCacheTests_Test::TestBody() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/test_imagecache.cpp:1229
#4 0x7ad278 in void testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::)(), char const) (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x7ad278)
#5 0x7a0938 in void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::)(), char const) /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2438
#6 0x75d4cd in testing::Test::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2474
#7 0x75e7b9 in testing::TestInfo::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2656
#8 0x75f332 in testing::TestCase::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2774
#9 0x76fed0 in testing::internal::UnitTestImpl::RunAllTests() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:4649
#10 0x7afcb7 in bool testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::)(), char const) /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2402
#11 0x7a2a97 in bool testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::)(), char const) (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x7a2a97)
#12 0x76d0d9 in testing::UnitTest::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:4257
#13 0x5299db in RUN_ALL_TESTS() (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x5299db)
#14 0x5295c7 in main /home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtestsmain.cpp:101
#15 0x7f1b7c57f009 in __libc_start_main (/lib64/libc.so.6+0x21009)
previously allocated by thread T0 here:
#0 0x7f1b8234e158 in operator new(unsigned long) (/lib64/libasan.so.4+0xe0158)
#1 0x6653b0 in rtFileDownloaderTest::disableCacheTest() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/test_imagecache.cpp:889
#2 0x64dd3b in rtFileDownloaderTest_checkCacheTests_Test::TestBody() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/test_imagecache.cpp:1229
#3 0x7ad278 in void testing::internal::HandleSehExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::)(), char const) (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x7ad278)
#4 0x7a0938 in void testing::internal::HandleExceptionsInMethodIfSupported<testing::Test, void>(testing::Test*, void (testing::Test::)(), char const) /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2438
#5 0x75d4cd in testing::Test::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2474
#6 0x75e7b9 in testing::TestInfo::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2656
#7 0x75f332 in testing::TestCase::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2774
#8 0x76fed0 in testing::internal::UnitTestImpl::RunAllTests() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:4649
#9 0x7afcb7 in bool testing::internal::HandleSehExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::)(), char const) /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:2402
#10 0x7a2a97 in bool testing::internal::HandleExceptionsInMethodIfSupported<testing::internal::UnitTestImpl, bool>(testing::internal::UnitTestImpl*, bool (testing::internal::UnitTestImpl::)(), char const) (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x7a2a97)
#11 0x76d0d9 in testing::UnitTest::Run() /home/sw/projects/pxscene/pxCore/tests/pxScene2d/../../examples/pxScene2d/external/gtest/googletest/src/gtest.cc:4257
#12 0x5299db in RUN_ALL_TESTS() (/home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtests+0x5299db)
#13 0x5295c7 in main /home/sw/projects/pxscene/pxCore/tests/pxScene2d/pxscene2dtestsmain.cpp:101
#14 0x7f1b7c57f009 in __libc_start_main (/lib64/libc.so.6+0x21009)
SUMMARY: AddressSanitizer: heap-use-after-free /home/sw/projects/pxscene/pxCore/src/rtFileDownloader.cpp:366 in rtFileDownloadRequest::isDataCached()
Shadow bytes around the buggy address:
0x0c287ffff8c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c287ffff8d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c287ffff8e0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c287ffff8f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c287ffff900: fa fa fa fa fa fa fa fa fd fd fd fd fd fd fd fd
=>0x0c287ffff910: fd fd fd fd fd fd fd fd fd fd fd fd fd fd[fd]fd
0x0c287ffff920: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c287ffff930: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c287ffff940: fa fa fa fa fa fa fa fa fd fd fd fd fd fd fd fd
0x0c287ffff950: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c287ffff960: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
==21739==ABORTING