From: Dan Carpenter Date: Wed, 8 Nov 2017 08:43:44 +0000 (+0300) Subject: tcmu: Fix some memory corruption X-Git-Tag: v4.15-rc1~14^2~1 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=16b932770417b1bc304d87c48aa0bb8a3c1164e1;p=linux-block.git tcmu: Fix some memory corruption "udev->nl_reply_supported" is an int but on 64 bit arches we are writing 8 bytes of data to it so it corrupts four bytes beyond the end of the struct. Fixes: b849b4567549 ("target: Add netlink command reply supported option for each device") Signed-off-by: Dan Carpenter Signed-off-by: Nicholas Bellinger --- diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index 9ddf0909d33e..d2b8d5ccb446 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -1724,11 +1724,10 @@ static ssize_t tcmu_set_configfs_dev_params(struct se_device *dev, ret = -ENOMEM; break; } - ret = kstrtol(arg_p, 0, - (long int *) &udev->nl_reply_supported); + ret = kstrtoint(arg_p, 0, &udev->nl_reply_supported); kfree(arg_p); if (ret < 0) - pr_err("kstrtoul() failed for nl_reply_supported=\n"); + pr_err("kstrtoint() failed for nl_reply_supported=\n"); break; default: break;