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| author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-01-13 19:41:57 +0100 |
|---|---|---|
| committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2020-01-13 19:41:57 +0100 |
| commit | 1d62a403734b18367eb0aa47493d0de644edd00b (patch) | |
| tree | ecc4e57a3c54be4be9217114e9ba38bc25e31cca /htl/pt-internal.h | |
| parent | bc487d714191e91789ad420de274e789f710cac3 (diff) | |
| download | glibc-1d62a403734b18367eb0aa47493d0de644edd00b.tar.gz glibc-1d62a403734b18367eb0aa47493d0de644edd00b.tar.xz glibc-1d62a403734b18367eb0aa47493d0de644edd00b.zip | |
htl: Avoid crashing when passed invalid pthread_t values
Diffstat (limited to 'htl/pt-internal.h')
| -rw-r--r-- | htl/pt-internal.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/htl/pt-internal.h b/htl/pt-internal.h index 8754f386a6..f8d7d74244 100644 --- a/htl/pt-internal.h +++ b/htl/pt-internal.h @@ -173,12 +173,14 @@ extern int __pthread_concurrency; brain-dead users of the pthread interface incorrectly assume that 0 is an invalid pthread id.) */ extern struct __pthread **__pthread_threads; +extern int __pthread_max_threads; extern pthread_rwlock_t __pthread_threads_lock; #define __pthread_getid(thread) \ - ({ struct __pthread *__t; \ + ({ struct __pthread *__t = NULL; \ __pthread_rwlock_rdlock (&__pthread_threads_lock); \ - __t = __pthread_threads[thread - 1]; \ + if (thread <= __pthread_max_threads) \ + __t = __pthread_threads[thread - 1]; \ __pthread_rwlock_unlock (&__pthread_threads_lock); \ __t; }) |