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Add leak sanitizer suppressions

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ASan will detect leaks also outside of the code we build, and sometimes
that external code leaks and we cannot work around it. Then we need to
suppress the leak reports to make our own ASan testing succeed. This
commit only introduces the suppressions file, making use of it CI is for
another time. This file is useful for manual targeted testing as below.

Start by suppressing two functions what weston-keyboard client ends up
calling, suppressing leak reports like these:

Indirect leak of 96 byte(s) in 3 object(s) allocated from:
    #0 0x7fc109c3d518 in calloc (/lib/x86_64-linux-gnu/libasan.so.5+0xe9518)
    #1 0x7fc109083d18  (/lib/x86_64-linux-gnu/libfontconfig.so.1+0x20d18)
    #2 0x7fc1090849a7 in FcPatternDuplicate (/lib/x86_64-linux-gnu/libfontconfig.so.1+0x219a7)
    #3 0x7fc109adf93e  (/lib/x86_64-linux-gnu/libcairo.so.2+0xbb93e)
    #4 0x7fc109adfc8d  (/lib/x86_64-linux-gnu/libcairo.so.2+0xbbc8d)
    #5 0x7fc109aa02e7 in cairo_toy_font_face_create (/lib/x86_64-linux-gnu/libcairo.so.2+0x7c2e7)
    #6 0x7fc109aa856c in cairo_select_font_face (/lib/x86_64-linux-gnu/libcairo.so.2+0x8456c)
    #7 0x5603cb49a06a in redraw_handler ../../git/weston/clients/keyboard.c:378
    #8 0x5603cb4b506b in widget_redraw ../../git/weston/clients/window.c:4520
    #9 0x5603cb4b55da in surface_redraw ../../git/weston/clients/window.c:4578
    #10 0x5603cb4b5750 in idle_redraw ../../git/weston/clients/window.c:4607
    #11 0x5603cb4bebe3 in display_run ../../git/weston/clients/window.c:6525
    #12 0x5603cb49e55d in main ../../git/weston/clients/keyboard.c:1054
    #13 0x7fc1092a709a in __libc_start_main ../csu/libc-start.c:308
    #14 0x5603cb499019 in _start (/home/pq/build/weston-meson/clients/weston-keyboard+0x19019)

Indirect leak of 528 byte(s) in 51 object(s) allocated from:
    #0 0x7fc109b8e810 in strdup (/lib/x86_64-linux-gnu/libasan.so.5+0x3a810)
    #1 0x7fc109082fc4 in FcValueSave (/lib/x86_64-linux-gnu/libfontconfig.so.1+0x1ffc4)
    #2 0x7fc109083d2e  (/lib/x86_64-linux-gnu/libfontconfig.so.1+0x20d2e)
    #3 0x7fc1090852c7  (/lib/x86_64-linux-gnu/libfontconfig.so.1+0x222c7)
    #4 0x7fc10908c28b  (/lib/x86_64-linux-gnu/libfontconfig.so.1+0x2928b)
    #5 0x7fc108603a15  (/lib/x86_64-linux-gnu/libexpat.so.1+0xba15)
    #6 0x7fc1086044bb  (/lib/x86_64-linux-gnu/libexpat.so.1+0xc4bb)
    #7 0x7fc108601f8a  (/lib/x86_64-linux-gnu/libexpat.so.1+0x9f8a)
    #8 0x7fc108602e7a  (/lib/x86_64-linux-gnu/libexpat.so.1+0xae7a)
    #9 0x7fc108606a37 in XML_ParseBuffer (/lib/x86_64-linux-gnu/libexpat.so.1+0xea37)
    #10 0x7fc10908a0fa  (/lib/x86_64-linux-gnu/libfontconfig.so.1+0x270fa)
    #11 0x7fc10908a519  (/lib/x86_64-linux-gnu/libfontconfig.so.1+0x27519)
    #12 0x7fc10908a73a  (/lib/x86_64-linux-gnu/libfontconfig.so.1+0x2773a)
    #13 0x7fc10908b48f  (/lib/x86_64-linux-gnu/libfontconfig.so.1+0x2848f)
    #14 0x7fc108603a15  (/lib/x86_64-linux-gnu/libexpat.so.1+0xba15)
    #15 0x7fc1086044bb  (/lib/x86_64-linux-gnu/libexpat.so.1+0xc4bb)
    #16 0x7fc108601f8a  (/lib/x86_64-linux-gnu/libexpat.so.1+0x9f8a)
    #17 0x7fc108602e7a  (/lib/x86_64-linux-gnu/libexpat.so.1+0xae7a)
    #18 0x7fc108606a37 in XML_ParseBuffer (/lib/x86_64-linux-gnu/libexpat.so.1+0xea37)
    #19 0x7fc10908a0fa  (/lib/x86_64-linux-gnu/libfontconfig.so.1+0x270fa)
    #20 0x7fc10908a519  (/lib/x86_64-linux-gnu/libfontconfig.so.1+0x27519)
    #21 0x7fc10907c4b3  (/lib/x86_64-linux-gnu/libfontconfig.so.1+0x194b3)
    #22 0x7fc10907c715  (/lib/x86_64-linux-gnu/libfontconfig.so.1+0x19715)
    #23 0x7fc10906e8e6  (/lib/x86_64-linux-gnu/libfontconfig.so.1+0xb8e6)
    #24 0x7fc109070928 in FcConfigSubstituteWithPat (/lib/x86_64-linux-gnu/libfontconfig.so.1+0xd928)
    #25 0x7fc109ae2d6b  (/lib/x86_64-linux-gnu/libcairo.so.2+0xbed6b)
    #26 0x7fc109a8aba2 in cairo_scaled_font_create (/lib/x86_64-linux-gnu/libcairo.so.2+0x66ba2)
    #27 0x7fc109a50d1d  (/lib/x86_64-linux-gnu/libcairo.so.2+0x2cd1d)
    #28 0x7fc109a53be0  (/lib/x86_64-linux-gnu/libcairo.so.2+0x2fbe0)
    #29 0x7fc109a4c1df  (/lib/x86_64-linux-gnu/libcairo.so.2+0x281df)
    #30 0x7fc109aa8dab in cairo_text_extents (/lib/x86_64-linux-gnu/libcairo.so.2+0x84dab)
    #31 0x5603cb499af3 in draw_key ../../git/weston/clients/keyboard.c:329
    #32 0x5603cb49a30c in redraw_handler ../../git/weston/clients/keyboard.c:392
    #33 0x5603cb4b506b in widget_redraw ../../git/weston/clients/window.c:4520
    #34 0x5603cb4b55da in surface_redraw ../../git/weston/clients/window.c:4578
    #35 0x5603cb4b5750 in idle_redraw ../../git/weston/clients/window.c:4607
    #36 0x5603cb4bebe3 in display_run ../../git/weston/clients/window.c:6525
    #37 0x5603cb49e55d in main ../../git/weston/clients/keyboard.c:1054
    #38 0x7fc1092a709a in __libc_start_main ../csu/libc-start.c:308
    #39 0x5603cb499019 in _start (/home/pq/build/weston-meson/clients/weston-keyboard+0x19019)

With the command line

	ASAN_OPTIONS=fast_unwind_on_malloc=0,malloc_context_size=50 \
	LSAN_OPTIONS=suppressions=/home/pq/git/weston/.gitlab-ci/leak-sanitizer.supp \
	./tests/test-viewporter test_viewporter_double_create

Suppressions used:
  count      bytes template
      5        357 cairo_select_font_face
    130       9104 cairo_text_extents

Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>
This commit is contained in:
Pekka Paalanen 2021-05-24 14:07:02 +03:00
parent c8c53bafd3
commit 6ae243f91e
1 changed files with 5 additions and 0 deletions
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5
.gitlab-ci/leak-sanitizer.supp Normal file
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@ -0,0 +1,5 @@
# AddressSanitizer memory leak suppressions
# Cairo internal leaks from weston-keyboard
leak:cairo_select_font_face
leak:cairo_text_extents