mm->flags can still change freely under the coredump using atomic bitops in proc_coredump_filter_write(). So read the mm->flags with READ_ONCE for correctness. Signed-off-by: Andrea Arcangeli <aarcange@xxxxxxxxxx> --- fs/coredump.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/coredump.c b/fs/coredump.c index e42e17e55bfd..cc175d52090a 100644 --- a/fs/coredump.c +++ b/fs/coredump.c @@ -560,7 +560,7 @@ void do_coredump(const kernel_siginfo_t *siginfo) * inconsistency of bit flags, since this flag is not protected * by any locks. */ - .mm_flags = mm->flags, + .mm_flags = READ_ONCE(mm->flags), }; audit_core_dumps(siginfo->si_signo);
