=================================================================
==9140==ERROR: AddressSanitizer: global-buffer-overflow on address 0x000001177628 at pc 0x000000a65431 bp 0x7ffd28194d30 sp 0x7ffd28194d28
READ of size 1 at 0x000001177628 thread T0
    #0 0xa65430 in convert_to_8(unsigned int, unsigned int) /tmp/skia/out/Debug/../../src/codec/SkMasks.cpp:54:16
    #1 0xa63dee in swizzle_mask24_to_n32_opaque(void*, unsigned char const*, int, SkMasks*, unsigned int, unsigned int) /tmp/skia/out/Debug/../../src/codec/SkMaskSwizzler.cpp:93:23
    #2 0xa5dfa6 in SkBmpMaskCodec::decodeRows(SkImageInfo const&, void*, unsigned long, SkCodec::Options const&) /tmp/skia/out/Debug/../../src/codec/SkBmpMaskCodec.cpp:103:9
    #3 0xc19b94 in piex::(anonymous namespace)::GetPreviewData(std::set<int, std::less<int>, std::allocator<int> > const&, unsigned int, unsigned int, piex::StreamInterface*, piex::TiffContent*, piex::PreviewImageData*) /tmp/skia/out/Debug/../../third_party/externals/piex/src/piex.cc:59:10
    #4 0xc19850 in piex::(anonymous namespace)::GetPreviewData(std::set<int, std::less<int>, std::allocator<int> > const&, unsigned int, piex::StreamInterface*, piex::PreviewImageData*) /tmp/skia/out/Debug/../../third_party/externals/piex/src/piex.cc:68:10
    #5 0x72c2dc in fuzz_img(SkData*) /tmp/skia/out/Debug/../../fuzz/fuzz.cpp:119:13
    #6 0x72bd09 in main /tmp/skia/out/Debug/../../fuzz/fuzz.cpp:53:30
    #7 0x7f4ae3494ec4 in __libc_start_main /tmp/tmp.Htw1L27e9P/csu/libc-start.c:287
    #8 0x68399f in _start (/tmp/executables/skcodec/analyzer0/fuzz_asan_debug+0x68399f)

0x000001177628 is located 24 bytes to the left of global variable '<string literal>' defined in '../../src/gpu/gl/GrGLGpu.cpp:305:17' (0x1177640) of size 16
  '<string literal>' is ascii string 'Disable(0x0B42)'
0x000001177628 is located 35 bytes to the right of global variable '<string literal>' defined in '../../src/gpu/gl/GrGLGpu.cpp:305:17' (0x11775e0) of size 37
  '<string literal>' is ascii string '../../src/gpu/gl/GrGLGpu.cpp(305) : '
SUMMARY: AddressSanitizer: global-buffer-overflow /tmp/skia/out/Debug/../../src/codec/SkMasks.cpp:54 convert_to_8(unsigned int, unsigned int)
Shadow bytes around the buggy address:
  0x000080226e70: 00 00 00 00 00 00 00 01 f9 f9 f9 f9 00 00 00 00
  0x000080226e80: 05 f9 f9 f9 f9 f9 f9 f9 00 00 f9 f9 f9 f9 f9 f9
  0x000080226e90: 00 00 00 00 00 00 00 01 f9 f9 f9 f9 00 00 00 00
  0x000080226ea0: 05 f9 f9 f9 f9 f9 f9 f9 00 00 f9 f9 f9 f9 f9 f9
  0x000080226eb0: 00 00 00 00 00 00 00 01 f9 f9 f9 f9 00 00 00 00
=>0x000080226ec0: 05 f9 f9 f9 f9[f9]f9 f9 00 00 f9 f9 f9 f9 f9 f9
  0x000080226ed0: 00 00 00 00 00 00 00 01 f9 f9 f9 f9 00 00 00 00
  0x000080226ee0: 05 f9 f9 f9 f9 f9 f9 f9 00 00 f9 f9 f9 f9 f9 f9
  0x000080226ef0: 00 00 00 00 00 00 00 01 f9 f9 f9 f9 00 00 00 00
  0x000080226f00: 05 f9 f9 f9 f9 f9 f9 f9 00 00 f9 f9 f9 f9 f9 f9
  0x000080226f10: 00 00 00 00 00 00 00 01 f9 f9 f9 f9 00 00 00 00
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
  Heap right redzone:      fb
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack partial redzone:   f4
  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
==9140==ABORTING