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| author |   Matthew Wilcox (Oracle) <willy@infradead.org> | 2020-07-03 14:10:14 -0400 |
|---|---|---|
| committer |   Al Viro <viro@zeniv.linux.org.uk> | 2020-07-03 14:10:46 -0400 |
| commit | d4d80e69927ab5da67026c1c94e23c305dbc799e (patch) | |
| tree | 9fb26d8cb6a1732a9564780ac59824737cf00da7 /fs/proc/proc_sysctl.c | |
| parent | Linux 5.8-rc1 (diff) | |
| download | wireguard-linux-d4d80e69927ab5da67026c1c94e23c305dbc799e.tar.xz wireguard-linux-d4d80e69927ab5da67026c1c94e23c305dbc799e.zip | |
Call sysctl_head_finish on error
This error path returned directly instead of calling sysctl_head_finish().
Fixes: ef9d965bc8b6 ("sysctl: reject gigantic reads/write to sysctl files")
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/proc/proc_sysctl.c')
| -rw-r--r-- | fs/proc/proc_sysctl.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c index 42c5128c7d1c..6c1166ccdaea 100644 --- a/fs/proc/proc_sysctl.c +++ b/fs/proc/proc_sysctl.c @@ -566,8 +566,9 @@ static ssize_t proc_sys_call_handler(struct file *filp, void __user *ubuf, goto out; /* don't even try if the size is too large */ - if (count > KMALLOC_MAX_SIZE) - return -ENOMEM; + error = -ENOMEM; + if (count >= KMALLOC_MAX_SIZE) + goto out; if (write) { kbuf = memdup_user_nul(ubuf, count); @@ -576,7 +577,6 @@ static ssize_t proc_sys_call_handler(struct file *filp, void __user *ubuf, goto out; } } else { - error = -ENOMEM; kbuf = kzalloc(count, GFP_KERNEL); if (!kbuf) goto out; |