| commit | e752326cc050803c3bcfde1f8606bead66ff9642 | |
| author | Julian Seward <jseward@acm.org> | |
| Tue, 14 Aug 2018 08:13:46 +0000 (14 10:13 +0200) | ||
| committer | Julian Seward <jseward@acm.org> | |
| Tue, 14 Aug 2018 08:13:46 +0000 (14 10:13 +0200) | ||
| tree | ffdce49fb42f6a69777469606c6881988ebc65ae | treesnapshot (tar.gz zip) |
| parent | 7fe4ff55cce4c62f17262f2cf30b97b23af142b4 | commitdiff |
VG_(di_notify_mmap): once we've read debuginfo for an object, ignore all further mappings. n-i-bz.
Once we've read debuginfo for an object, ignore all further mappings. If we
don't do that, applications that mmap in their own objects to inspect them for
whatever reason, will cause "irrelevant" mappings to be recorded in the
object's fsm.maps table. This can lead to serious problems later on.
This has become necessary because 64aa729bfae71561505a40c12755bd6b55bb3061 of
Thu Jul 12 2018 (the fix for bug 395682) started recording readonly segments
in the fsm.maps table, where before they were ignored.
Once we've read debuginfo for an object, ignore all further mappings. If we
don't do that, applications that mmap in their own objects to inspect them for
whatever reason, will cause "irrelevant" mappings to be recorded in the
object's fsm.maps table. This can lead to serious problems later on.
This has become necessary because 64aa729bfae71561505a40c12755bd6b55bb3061 of
Thu Jul 12 2018 (the fix for bug 395682) started recording readonly segments
in the fsm.maps table, where before they were ignored.
| coregrind/m_debuginfo/debuginfo.c | diffblobblamehistory |