On Mon, Dec 20, 2021 at 05:26:27PM +0800, Baokun Li wrote: > When we pass a negative value to the proc_doulongvec_minmax() function, > the function returns 0, but the corresponding interface value does not > change. > > we can easily reproduce this problem with the following commands: > `cd /proc/sys/fs/epoll` > `echo -1 > max_user_watches; echo $?; cat max_user_watches` > > This function requires a non-negative number to be passed in, so when > a negative number is passed in, -EINVAL is returned. > > Reported-by: Hulk Robot <hulkci@xxxxxxxxxx> > Signed-off-by: Baokun Li <libaokun1@xxxxxxxxxx> Acked-by: Luis Chamberlain <mcgrof@xxxxxxxxxx> Luis
