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-rw-r--r--block/blk-core.c1
-rw-r--r--kernel/trace/blktrace.c7
2 files changed, 5 insertions, 3 deletions
diff --git a/block/blk-core.c b/block/blk-core.c
index 29bcfac6c688..859879d0a0bf 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)
132 INIT_HLIST_NODE(&rq->hash); 132 INIT_HLIST_NODE(&rq->hash);
133 RB_CLEAR_NODE(&rq->rb_node); 133 RB_CLEAR_NODE(&rq->rb_node);
134 rq->cmd = rq->__cmd; 134 rq->cmd = rq->__cmd;
135 rq->cmd_len = BLK_MAX_CDB;
135 rq->tag = -1; 136 rq->tag = -1;
136 rq->ref_count = 1; 137 rq->ref_count = 1;
137} 138}
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 947c5b3f90c4..b32ff446c3fb 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,
327 char *msg; 327 char *msg;
328 struct blk_trace *bt; 328 struct blk_trace *bt;
329 329
330 if (count > BLK_TN_MAX_MSG) 330 if (count >= BLK_TN_MAX_MSG)
331 return -EINVAL; 331 return -EINVAL;
332 332
333 msg = kmalloc(count, GFP_KERNEL); 333 msg = kmalloc(count + 1, GFP_KERNEL);
334 if (msg == NULL) 334 if (msg == NULL)
335 return -ENOMEM; 335 return -ENOMEM;
336 336
@@ -339,6 +339,7 @@ static ssize_t blk_msg_write(struct file *filp, const char __user *buffer,
339 return -EFAULT; 339 return -EFAULT;
340 } 340 }
341 341
342 msg[count] = '\0';
342 bt = filp->private_data; 343 bt = filp->private_data;
343 __trace_note_message(bt, "%s", msg); 344 __trace_note_message(bt, "%s", msg);
344 kfree(msg); 345 kfree(msg);
@@ -642,7 +643,7 @@ static void blk_add_trace_rq(struct request_queue *q, struct request *rq,
642 if (blk_pc_request(rq)) { 643 if (blk_pc_request(rq)) {
643 what |= BLK_TC_ACT(BLK_TC_PC); 644 what |= BLK_TC_ACT(BLK_TC_PC);
644 __blk_add_trace(bt, 0, rq->data_len, rw, what, rq->errors, 645 __blk_add_trace(bt, 0, rq->data_len, rw, what, rq->errors,
645 sizeof(rq->cmd), rq->cmd); 646 rq->cmd_len, rq->cmd);
646 } else { 647 } else {
647 what |= BLK_TC_ACT(BLK_TC_FS); 648 what |= BLK_TC_ACT(BLK_TC_FS);
648 __blk_add_trace(bt, rq->hard_sector, rq->hard_nr_sectors << 9, 649 __blk_add_trace(bt, rq->hard_sector, rq->hard_nr_sectors << 9,