Fix uninitialized value issue in from_kuid by initializing the newattrs structure in do_truncate() method. Fixes: uninit-value in from_kuid reported here https://syzkaller.appspot.com/bug?extid=6c55f725d1bdc8c52058 Reported-by: syzbot+6c55f725d1bdc8c52058@xxxxxxxxxxxxxxxxxxxxxxxxx Closes: https://syzkaller.appspot.com/bug?extid=6c55f725d1bdc8c52058 Signed-off-by: Alessandro Zanni <alessandro.zanni87@xxxxxxxxx> --- fs/open.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/open.c b/fs/open.c index acaeb3e25c88..57c298b1db2c 100644 --- a/fs/open.c +++ b/fs/open.c @@ -40,7 +40,7 @@ int do_truncate(struct mnt_idmap *idmap, struct dentry *dentry, loff_t length, unsigned int time_attrs, struct file *filp) { int ret; - struct iattr newattrs; + struct iattr newattrs = {0}; /* Not pretty: "inode->i_size" shouldn't really be signed. But it is. */ if (length < 0) -- 2.43.0
