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| author | Andreas Schwab <schwab@suse.de> | 2020-01-20 17:01:50 +0100 |
|---|---|---|
| committer | Andreas Schwab <schwab@suse.de> | 2020-01-21 15:26:57 +0100 |
| commit | d93769405996dfc11d216ddbe415946617b5a494 (patch) | |
| tree | 495421ac18939903f2514d2d658b038fcdc26f31 /debug | |
| parent | 8b222fa38700422b4da6731806835f0bbf40920d (diff) | |
| download | glibc-d93769405996dfc11d216ddbe415946617b5a494.zip glibc-d93769405996dfc11d216ddbe415946617b5a494.tar.gz glibc-d93769405996dfc11d216ddbe415946617b5a494.tar.bz2 | |
Fix array overflow in backtrace on PowerPC (bug 25423)
When unwinding through a signal frame the backtrace function on PowerPC
didn't check array bounds when storing the frame address. Fixes commit
d400dcac5e ("PowerPC: fix backtrace to handle signal trampolines").
Diffstat (limited to 'debug')
| -rw-r--r-- | debug/tst-backtrace5.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/debug/tst-backtrace5.c b/debug/tst-backtrace5.c index e7ce410..b2f4616 100644 --- a/debug/tst-backtrace5.c +++ b/debug/tst-backtrace5.c @@ -89,6 +89,18 @@ handle_signal (int signum) } /* Symbol names are not available for static functions, so we do not check do_test. */ + + /* Check that backtrace does not return more than what fits in the array + (bug 25423). */ + for (int j = 0; j < NUM_FUNCTIONS; j++) + { + n = backtrace (addresses, j); + if (n > j) + { + FAIL (); + return; + } + } } NO_INLINE int |