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authorWenwen Wang <wang6495@umn.edu>2018-12-27 05:15:13 +0300
committerJens Axboe <axboe@kernel.dk>2018-12-29 18:20:44 +0300
commit093c48213ee37c3c3ff1cf5ac1aa2a9d8bc66017 (patch)
treeadfb5cabb32a5efc2060d232f577270fae3e2b48 /drivers/cdrom
parentd52c499b476b2f82eebecdd5fc4be8318a4e8ef7 (diff)
downloadlinux-093c48213ee37c3c3ff1cf5ac1aa2a9d8bc66017.tar.xz
gdrom: fix a memory leak bug
In probe_gdrom(), the buffer pointed by 'gd.cd_info' is allocated through kzalloc() and is used to hold the information of the gdrom device. To register and unregister the device, the pointer 'gd.cd_info' is passed to the functions register_cdrom() and unregister_cdrom(), respectively. However, this buffer is not freed after it is used, which can cause a memory leak bug. This patch simply frees the buffer 'gd.cd_info' in exit_gdrom() to fix the above issue. Signed-off-by: Wenwen Wang <wang6495@umn.edu> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/cdrom')
-rw-r--r--drivers/cdrom/gdrom.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/cdrom/gdrom.c b/drivers/cdrom/gdrom.c
index a5b8afe3609c..f8b7345fe1cb 100644
--- a/drivers/cdrom/gdrom.c
+++ b/drivers/cdrom/gdrom.c
@@ -873,6 +873,7 @@ static void __exit exit_gdrom(void)
platform_device_unregister(pd);
platform_driver_unregister(&gdrom_driver);
kfree(gd.toc);
+ kfree(gd.cd_info);
}
module_init(init_gdrom);