diff options
| author | Amar Tumballi <amar@gluster.com> | 2010-07-02 04:55:28 +0000 |
|---|---|---|
| committer | Anand V. Avati <avati@dev.gluster.com> | 2010-07-02 05:17:03 -0700 |
| commit | 2f15ffd6b5beef9abd501c594bc3cb38c2683f77 (patch) | |
| tree | 107176560e1a97c42f3535380ef49d4dee3b0cd6 /xlators/cluster/dht/src | |
| parent | 3dc79ca8e6119f5ff61058cc87f9a4fc251017ef (diff) | |
NULL dereference fixes in code base after running with 'clang'
* 212 logical (NULL deref/divide by zero) errors reduced to 28
(27 of them in contrib/ and lex part of codebase, 1 is invalid)
* 11 API errors reduced to 0
Signed-off-by: Amar Tumballi <amar@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 966 (NULL check for avoiding NULL dereferencing of pointers..)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=966
Diffstat (limited to 'xlators/cluster/dht/src')
| -rw-r--r-- | xlators/cluster/dht/src/dht-common.h | 8 | ||||
| -rw-r--r-- | xlators/cluster/dht/src/dht-rename.c | 10 | ||||
| -rw-r--r-- | xlators/cluster/dht/src/dht-selfheal.c | 2 |
3 files changed, 15 insertions, 5 deletions
diff --git a/xlators/cluster/dht/src/dht-common.h b/xlators/cluster/dht/src/dht-common.h index b51f308ec9c..b361f14426e 100644 --- a/xlators/cluster/dht/src/dht-common.h +++ b/xlators/cluster/dht/src/dht-common.h @@ -183,9 +183,11 @@ typedef struct dht_disk_layout dht_disk_layout_t; #define DHT_STACK_UNWIND(fop, frame, params ...) do { \ dht_local_t *__local = NULL; \ xlator_t *__xl = NULL; \ - __xl = frame->this; \ - __local = frame->local; \ - frame->local = NULL; \ + if (frame) { \ + __xl = frame->this; \ + __local = frame->local; \ + frame->local = NULL; \ + } \ STACK_UNWIND_STRICT (fop, frame, params); \ dht_local_wipe (__xl, __local); \ } while (0) diff --git a/xlators/cluster/dht/src/dht-rename.c b/xlators/cluster/dht/src/dht-rename.c index d96c4b8a349..d88fc74450a 100644 --- a/xlators/cluster/dht/src/dht-rename.c +++ b/xlators/cluster/dht/src/dht-rename.c @@ -260,6 +260,12 @@ dht_rename_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, local = frame->local; prev = cookie; + if (!local) { + gf_log (this->name, GF_LOG_ERROR, + "!local, should not happen"); + goto out; + } + this_call_cnt = dht_frame_return (frame); if (op_ret == -1) { @@ -273,12 +279,14 @@ dht_rename_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, WIPE (&local->preparent); WIPE (&local->postparent); - if (is_last_call (this_call_cnt)) + if (is_last_call (this_call_cnt)) { DHT_STACK_UNWIND (rename, frame, local->op_ret, local->op_errno, &local->stbuf, &local->preoldparent, &local->postoldparent, &local->preparent, &local->postparent); + } +out: return 0; } diff --git a/xlators/cluster/dht/src/dht-selfheal.c b/xlators/cluster/dht/src/dht-selfheal.c index 8cfb1f41f28..9270952e113 100644 --- a/xlators/cluster/dht/src/dht-selfheal.c +++ b/xlators/cluster/dht/src/dht-selfheal.c @@ -336,7 +336,7 @@ dht_selfheal_layout_new_directory (call_frame_t *frame, loc_t *loc, } } - chunk = ((unsigned long) 0xffffffff) / cnt; + chunk = ((unsigned long) 0xffffffff) / ((cnt) ? cnt : 1); start_subvol = dht_selfheal_layout_alloc_start (this, loc, layout); |