diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-04-07 13:40:49 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-07 13:40:55 +0200 |
| commit | a053958f073740219df1da596b42bfefdab634c4 (patch) | |
| tree | f681f808db3d5df5d7987199c8224031982bcf3f | |
| parent | 4fafd5b03875612a24a5b17dac0c63217a65de42 (diff) | |
| parent | e2494e1b42ebac402324105d57646489d19e2b01 (diff) | |
Merge branch 'tracing/blktrace-fixes' into tracing/urgent
Merge reason: this used to be a tracing/blktrace-v2 devel topic still
cooking during the merge window - has propagated to fixes
Signed-off-by: Ingo Molnar <mingo@elte.hu>
| -rw-r--r-- | block/blk-core.c | 1 | ||||
| -rw-r--r-- | kernel/trace/blktrace.c | 7 |
2 files changed, 5 insertions, 3 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index 29bcfac6c68..859879d0a0b 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -132,6 +132,7 @@ void blk_rq_init(struct request_queue *q, struct request *rq) INIT_HLIST_NODE(&rq->hash); RB_CLEAR_NODE(&rq->rb_node); rq->cmd = rq->__cmd; + rq->cmd_len = BLK_MAX_CDB; rq->tag = -1; rq->ref_count = 1; } diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index 947c5b3f90c..b32ff446c3f 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -327,10 +327,10 @@ static ssize_t blk_msg_write(struct file *filp, const char __user *buffer, char *msg; struct blk_trace *bt; - if (count > BLK_TN_MAX_MSG) + if (count >= BLK_TN_MAX_MSG) return -EINVAL; - msg = kmalloc(count, GFP_KERNEL); + msg = kmalloc(count + 1, GFP_KERNEL); if (msg == NULL) return -ENOMEM; @@ -339,6 +339,7 @@ static ssize_t blk_msg_write(struct file *filp, const char __user *buffer, return -EFAULT; } + msg[count] = '\0'; bt = filp->private_data; __trace_note_message(bt, "%s", msg); kfree(msg); @@ -642,7 +643,7 @@ static void blk_add_trace_rq(struct request_queue *q, struct request *rq, if (blk_pc_request(rq)) { what |= BLK_TC_ACT(BLK_TC_PC); __blk_add_trace(bt, 0, rq->data_len, rw, what, rq->errors, - sizeof(rq->cmd), rq->cmd); + rq->cmd_len, rq->cmd); } else { what |= BLK_TC_ACT(BLK_TC_FS); __blk_add_trace(bt, rq->hard_sector, rq->hard_nr_sectors << 9, |