| 1 | // RUN: %clangxx_hwasan %s -o %t && not %run %t 2>&1 | FileCheck %s |
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| 2 | |
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| 3 | #include <sanitizer/hwasan_interface.h> |
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| 4 | |
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| 5 | #include <stdio.h> |
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| 6 | #include <stdlib.h> |
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| 7 | #include <sys/mman.h> |
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| 8 | #include <unistd.h> |
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| 9 | |
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| 10 | int main(int argc, char **argv) { |
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| 11 | const size_t kPS = sysconf(_SC_PAGESIZE); |
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| 12 | |
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| 13 | void *r = nullptr; |
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| 14 | int res = posix_memalign(memptr: &r, alignment: kPS, size: 2 * kPS); |
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| 15 | if (res) { |
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| 16 | perror(s: "Failed to mmap: " ); |
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| 17 | abort(); |
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| 18 | } |
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| 19 | |
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| 20 | r = __hwasan_tag_pointer(p: r, tag: 0); |
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| 21 | __hwasan_tag_memory(p: r, tag: 1, size: 2 * kPS); |
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| 22 | |
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| 23 | // Disable access to the page just after tag-mismatch report address. |
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| 24 | res = mprotect(addr: (char*)r + kPS, len: kPS, PROT_NONE); |
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| 25 | if (res) { |
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| 26 | perror(s: "Failed to mprotect: " ); |
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| 27 | abort(); |
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| 28 | } |
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| 29 | |
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| 30 | // Trigger tag-mismatch report. |
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| 31 | return *((char*)r + kPS - 1); |
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| 32 | } |
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| 33 | |
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| 34 | // CHECK: ERROR: HWAddressSanitizer: tag-mismatch on address |
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| 35 | // CHECK: Memory tags around the buggy address |
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| 36 | // CHECK: Tags for short granules around |
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| 37 | |
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| 38 | // Check that report is complete. |
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| 39 | // CHECK: SUMMARY: HWAddressSanitizer: tag-mismatch {{.*}} in main |
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| 40 | |
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