Commit f5cc6a22 authored by Dor Shaish's avatar Dor Shaish Committed by Reinette Chatre
Browse files

iwlwifi: Fix null pointer referencing in iwl_dbgfs_rx_queue_read.

Test for null pointer prior to access.
Print "Not Allocated" if null pointer.
Signed-off-by: default avatarDor Shaish <>
Signed-off-by: default avatarEmmanuel Grumbach <>
Signed-off-by: default avatarReinette Chatre <>
parent f4989d9b
......@@ -1018,8 +1018,13 @@ static ssize_t iwl_dbgfs_rx_queue_read(struct file *file,
pos += scnprintf(buf + pos, bufsz - pos, "free_count: %u\n",
pos += scnprintf(buf + pos, bufsz - pos, "closed_rb_num: %u\n",
if (rxq->rb_stts) {
pos += scnprintf(buf + pos, bufsz - pos, "closed_rb_num: %u\n",
le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF);
} else {
pos += scnprintf(buf + pos, bufsz - pos,
"closed_rb_num: Not Allocated\n");
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
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