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seccomp: Remove bogus __user annotations 

Buffers that are passed to read_actions_logged() and write_actions_logged()
are in kernel memory; the sysctl core takes care of copying from/to
userspace.

Fixes: 32927393dc ("sysctl: pass kernel pointers to ->proc_handler")
Reviewed-by: Tyler Hicks <code@tyhicks.com>
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20201120170545.1419332-1-jannh@google.com
This commit is contained in:
Jann Horn 2020-11-20 18:05:45 +01:00 committed by Kees Cook
parent 0d8315dddd
commit fab686eb03
1 changed files with 2 additions and 2 deletions
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4
kernel/seccomp.c
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@ -2202,7 +2202,7 @@ static bool seccomp_actions_logged_from_names(u32 *actions_logged, char *names)
return true;
}
static int read_actions_logged(struct ctl_table *ro_table, void __user *buffer,
static int read_actions_logged(struct ctl_table *ro_table, void *buffer,
size_t *lenp, loff_t *ppos)
{
char names[sizeof(seccomp_actions_avail)];
@ -2220,7 +2220,7 @@ static int read_actions_logged(struct ctl_table *ro_table, void __user *buffer,
return proc_dostring(&table, 0, buffer, lenp, ppos);
}
static int write_actions_logged(struct ctl_table *ro_table, void __user *buffer,
static int write_actions_logged(struct ctl_table *ro_table, void *buffer,
size_t *lenp, loff_t *ppos, u32 *actions_logged)
{
char names[sizeof(seccomp_actions_avail)];