diff options
| author | Baokun Li <libaokun1@huawei.com> | 2022-01-21 22:13:48 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-01-22 08:33:37 +0200 |
| commit | 1622ed7d0743201293094162c26019d2573ecacb (patch) | |
| tree | 1d80811a251d27416bce444b2db70d791aaa6963 /mm/zsmalloc.c | |
| parent | e565a8ed1ee4b481539b66cd6f54df9ecf1e9861 (diff) | |
| download | linux-1622ed7d0743201293094162c26019d2573ecacb.tar.bz2 | |
sysctl: returns -EINVAL when a negative value is passed to proc_doulongvec_minmax
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.
Link: https://lkml.kernel.org/r/20211220092627.3744624-1-libaokun1@huawei.com
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Reported-by: Hulk Robot <hulkci@huawei.com>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/zsmalloc.c')
0 files changed, 0 insertions, 0 deletions