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Server-side workaround to handle overlapping modules.

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This change is resolving an issue that was caused by the combination of:
 - Android system libraries being relro packed in N+.
 - Breakpad dealing with relro packed libraries in a hack way.

This is a fix for http://crbug/611824.

I also found an use-after-free issue (bug in Minidump::SeekToStreamType).  I disallowed the MinidumpStreamInfo copy and assign constructors and the compiler detected another similar issue in Minidump::Print.  Then I disabled the copy and assign constructors for most classes in minidump.h (just in case).  There are a couple of classes where I couldn't disallow them (since assign is used).  This will require a small refactor so I left it out of this CL.

R=mark@chromium.org

Review URL: https://codereview.chromium.org/2060663002 .
This commit is contained in:
Ivan Penkov
2016-06-20 11:14:47 -07:00
parent 67f738b7ad
commit 24f5931c5e
18 changed files with 239 additions and 39 deletions
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4
src/processor/microdump.cc
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@@ -110,6 +110,9 @@ void MicrodumpModules::Add(const CodeModule* module) {
}
}
void MicrodumpModules::SetEnableModuleShrink(bool is_enabled) {
map_.SetEnableShrinkDown(is_enabled);
}
//
// MicrodumpContext
@@ -262,6 +265,7 @@ Microdump::Microdump(const string& contents)
} else if (os_id == "A") {
system_info_->os = "Android";
system_info_->os_short = "android";
modules_->SetEnableModuleShrink(true);
}
// OS line also contains release and version for future use.