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[asan] don't crash if /proc/self/maps has enormous size (linux) 

llvm-svn: 149944
This commit is contained in:
Kostya Serebryany 2012-02-07 00:47:35 +00:00
parent ece0409a1a
commit 614b53de1b
1 changed files with 2 additions and 2 deletions
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4
compiler-rt/lib/asan/asan_linux.cc
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@ -131,7 +131,7 @@ const char* AsanGetEnv(const char* name) {
inited = true;
size_t environ_size;
len = ReadFileToBuffer("/proc/self/environ",
&environ, &environ_size, 1 << 20);
&environ, &environ_size, 1 << 26);
}
if (!environ || len == 0) return NULL;
size_t namelen = internal_strlen(name);
@ -160,7 +160,7 @@ int AsanClose(int fd) {
AsanProcMaps::AsanProcMaps() {
proc_self_maps_buff_len_ =
ReadFileToBuffer("/proc/self/maps", &proc_self_maps_buff_,
&proc_self_maps_buff_mmaped_size_, 1 << 20);
&proc_self_maps_buff_mmaped_size_, 1 << 26);
CHECK(proc_self_maps_buff_len_ > 0);
// AsanWrite(2, proc_self_maps_buff_, proc_self_maps_buff_len_);
Reset();