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| author | Pino Toscano <toscano.pino@tiscali.it> | 2012-11-19 20:01:00 +0100 |
|---|---|---|
| committer | Pino Toscano <toscano.pino@tiscali.it> | 2012-11-19 20:01:00 +0100 |
| commit | e19af3803be804f2737788e62d243e425bb03011 (patch) | |
| tree | 725b6d3e1e96ddea102a88887a5632b380bd2c71 /ChangeLog | |
| parent | 942caa165645cf1cd0d65f8ecd4b4cbdfa32a34a (diff) | |
| download | glibc-e19af3803be804f2737788e62d243e425bb03011.tar.gz glibc-e19af3803be804f2737788e62d243e425bb03011.tar.xz glibc-e19af3803be804f2737788e62d243e425bb03011.zip | |
muntrace: reset file and hooks before finalizing the stream
fclose will call free, invoking its hook, then fprintf which would indirectly try to allocate a buffer, and this can cause malloc to be used (thus its hook to be invoked) if libio uses malloc instead of mmap; given any malloc/free hook locks the internal lock, this leads to a deadlock. To prevent this hook roundtrip at muntrace, first unset MALLSTREAM and the hooks, and only after that close the trace file.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index fbac1c5d5d..1031d4d5c1 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,8 @@ 2012-11-19 Pino Toscano <toscano.pino@tiscali.it> + * malloc/mtrace.c (muntrace): Reset MALLSTREAM and the hooks before + finalizing MALLSTREAM. + * sysdeps/mach/hurd/syncfs.c: New file. 2012-11-19 Siddhesh Poyarekar <siddhesh@redhat.com> |