The patch titled
Subject: fs/proc/proc_sysctl.c: check for invalid flags bits
has been removed from the -mm tree. Its filename was
proc-sysctl-check-for-invalid-flags-bits.patch
This patch was dropped because an updated version will be merged
------------------------------------------------------
From: Waiman Long <longman@xxxxxxxxxx>
Subject: fs/proc/proc_sysctl.c: check for invalid flags bits
Checking code is added to check for invalid flags in the ctl_table and
return error if an unknown flag is used.
Link: http://lkml.kernel.org/r/1520885744-1546-3-git-send-email-longman@xxxxxxxxxx
Signed-off-by: Waiman Long <longman@xxxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx>
Cc: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Davidlohr Bueso <dave@xxxxxxxxxxxx>
Cc: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: "Luis R. Rodriguez" <mcgrof@xxxxxxxxxx>
Cc: Manfred Spraul <manfred@xxxxxxxxxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/proc_sysctl.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff -puN fs/proc/proc_sysctl.c~proc-sysctl-check-for-invalid-flags-bits fs/proc/proc_sysctl.c
--- a/fs/proc/proc_sysctl.c~proc-sysctl-check-for-invalid-flags-bits
+++ a/fs/proc/proc_sysctl.c
@@ -1092,6 +1092,16 @@ static int sysctl_check_table_array(cons
return err;
}
+static int sysctl_check_flags(const char *path, struct ctl_table *table)
+{
+ int err = 0;
+
+ if (table->flags & ~CTL_TABLE_FLAGS_ALL)
+ err = sysctl_err(path, table, "invalid flags");
+
+ return err;
+}
+
static int sysctl_check_table(const char *path, struct ctl_table *table)
{
int err = 0;
@@ -1111,6 +1121,8 @@ static int sysctl_check_table(const char
(table->proc_handler == proc_doulongvec_ms_jiffies_minmax)) {
if (!table->data)
err |= sysctl_err(path, table, "No data");
+ if (table->flags)
+ err |= sysctl_check_flags(path, table);
if (!table->maxlen)
err |= sysctl_err(path, table, "No maxlen");
else
_
Patches currently in -mm which might be from longman@xxxxxxxxxx are
list_lru-prefetch-neighboring-list-entries-before-acquiring-lock.patch
proc-sysctl-fix-typo-in-sysctl_check_table_array.patch
sysctl-add-kdoc-comments-to-do_proc_douintvec_minmax_conv_param.patch
sysctl-warn-when-a-clamped-sysctl-parameter-is-set-out-of-range.patch
ipc-clamp-msgmni-and-shmmni-to-the-real-ipcmni-limit.patch
ipc-clamp-semmni-to-the-real-ipcmni-limit.patch
test_sysctl-add-range-clamping-test.patch
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