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| author | Neels Hofmeyr <nhofmeyr@sysmocom.de> | 2016-12-12 14:18:54 +0100 |
|---|---|---|
| committer | Neels Hofmeyr <nhofmeyr@sysmocom.de> | 2016-12-12 15:48:08 +0100 |
| commit | ca13574ba4eeb2c9e3ad865a570e6b5d3f05a3b6 (patch) | |
| tree | 3dbbe07fb7e59f2b616193176f574714030aa532 /src | |
| parent | a280b82f8ea9ef5fc1aa6e2357d27d9d91219173 (diff) | |
fix logging: also catch first out-of-bounds logging cat
In map_subsys(), fix the '>' condition to '>=' for array bounds checking.
Also make the bounds checking more strict: after both invocations of
subsys_lib2index(), re-check validity of the array index. If the final index is
still wrong, which should never happen, exit by assertion.
Change-Id: I7ca1a1d47724e40350f1c4dfebe90bad01c965f9
Diffstat (limited to 'src')
| -rw-r--r-- | src/logging.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/logging.c b/src/logging.c index 71025432..2a8bfdc8 100644 --- a/src/logging.c +++ b/src/logging.c @@ -339,9 +339,11 @@ static inline int map_subsys(int subsys) if (subsys < 0) subsys = subsys_lib2index(subsys); - if (subsys > osmo_log_info->num_cat) + if (subsys < 0 || subsys >= osmo_log_info->num_cat) subsys = subsys_lib2index(DLGLOBAL); + OSMO_ASSERT(!(subsys < 0 || subsys >= osmo_log_info->num_cat)); + return subsys; } |