diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/sys_info.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/lib/sys_info.c b/lib/sys_info.c index 496f9151c9b6..d542a024406a 100644 --- a/lib/sys_info.c +++ b/lib/sys_info.c @@ -58,11 +58,11 @@ int sysctl_sys_info_handler(const struct ctl_table *ro_table, int write, char names[sizeof(sys_info_avail)]; struct ctl_table table; unsigned long *si_bits_global; + unsigned long si_bits; si_bits_global = ro_table->data; if (write) { - unsigned long si_bits; int ret; table = *ro_table; @@ -81,9 +81,12 @@ int sysctl_sys_info_handler(const struct ctl_table *ro_table, int write, char *delim = ""; int i, len = 0; + /* The access to the global value is not synchronized. */ + si_bits = READ_ONCE(*si_bits_global); + names[0] = '\0'; for (i = 0; i < ARRAY_SIZE(si_names); i++) { - if (*si_bits_global & si_names[i].bit) { + if (si_bits & si_names[i].bit) { len += scnprintf(names + len, sizeof(names) - len, "%s%s", delim, si_names[i].name); delim = ","; |