From b08afa064c320e5d85cdc27228426b696c4c8dae Mon Sep 17 00:00:00 2001 From: Wenwen Wang Date: Sun, 18 Aug 2019 14:29:31 -0500 Subject: infiniband: hfi1: fix a memory leak bug In fault_opcodes_read(), 'data' is not deallocated if debugfs_file_get() fails, leading to a memory leak. To fix this bug, introduce the 'free_data' label to free 'data' before returning the error. Signed-off-by: Wenwen Wang Reviewed-by: Leon Romanovsky Acked-by: Dennis Dalessandro Link: https://lore.kernel.org/r/1566156571-4335-1-git-send-email-wenwen@cs.uga.edu Signed-off-by: Doug Ledford --- drivers/infiniband/hw/hfi1/fault.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/hfi1/fault.c b/drivers/infiniband/hw/hfi1/fault.c index 93613e5def9b..814324d17295 100644 --- a/drivers/infiniband/hw/hfi1/fault.c +++ b/drivers/infiniband/hw/hfi1/fault.c @@ -214,7 +214,7 @@ static ssize_t fault_opcodes_read(struct file *file, char __user *buf, return -ENOMEM; ret = debugfs_file_get(file->f_path.dentry); if (unlikely(ret)) - return ret; + goto free_data; bit = find_first_bit(fault->opcodes, bitsize); while (bit < bitsize) { zero = find_next_zero_bit(fault->opcodes, bitsize, bit); @@ -232,6 +232,7 @@ static ssize_t fault_opcodes_read(struct file *file, char __user *buf, data[size - 1] = '\n'; data[size] = '\0'; ret = simple_read_from_buffer(buf, len, pos, data, size); +free_data: kfree(data); return ret; } -- cgit v1.2.3