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Bug 1419371 - Set max_malloc_fill_size/max_free_fill_size for ASan. r=glandium

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MozReview-Commit-ID: KPng6w8JsHI

--HG--
extra : rebase_source : fcf2aced83cdf73cccb6cf572ca7da3f6a76c515
This commit is contained in:
Christian Holler 2017-11-22 13:49:36 +01:00
parent 57437be6ba
commit 586ce17728
1 changed files with 18 additions and 0 deletions
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18
mozglue/build/AsanOptions.cpp
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@ -40,9 +40,27 @@
// is only meant to run on Linux and Mac OSX for now, hardcoding /tmp is an
// option that should work for most standard environments.
//
// max_malloc_fill_size - Tell ASan to initialize memory to a certain value
// when it is allocated. This option specifies the maximum allocation size
// for which ASan should still initialize the memory. The value we specify
// here is exactly 256MiB.
//
// max_free_fill_size - Similar to max_malloc_fill_size, tell ASan to
// overwrite memory with a certain value when it is freed. Again, the value
// here specifies the maximum allocation size, larger allocations will
// skipped.
//
// malloc_fill_byte / free_fill_byte - These values specify the byte values
// used to initialize/overwrite memory in conjunction with the previous
// options max_malloc_fill_size and max_free_fill_size. The values used here
// are 0xe4 and 0xe5 to match the kAllocPoison and kAllocJunk constants used
// by mozjemalloc.
//
extern "C" MOZ_ASAN_BLACKLIST
const char* __asan_default_options() {
return "allow_user_segv_handler=1:alloc_dealloc_mismatch=0:detect_leaks=0"
":max_free_fill_size=268435456:max_malloc_fill_size=268435456"
":malloc_fill_byte=228:free_fill_byte=229"
#ifdef MOZ_ASAN_REPORTER
":log_path=/tmp/ff_asan_log"
#endif