diff options
| author | Lance Yang <lance.yang@linux.dev> | 2025-09-26 17:24:26 +0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-09-28 11:51:33 -0700 |
| commit | 989c2f55ca4839121cbf23b5802f8513dbd54e1e (patch) | |
| tree | 05001c86f044e8292bf8dbaf37e8e1fdedad62d5 /rust/kernel/alloc/allocator.rs | |
| parent | cde31ecdd1aa1cc495bdf6d5cba84adc276d8861 (diff) | |
mm: silence data-race in update_hiwater_rss
KCSAN reports a data race on mm_cluster.hiwater_rss, which can be accessed
concurrently from various paths like page migration and memory unmapping
without synchronization.
Since hiwater_rss is a statistical field for accounting purposes, this
data race is benign. Annotate both the read and write accesses with
data_race() to make KCSAN happy.
Link: https://lkml.kernel.org/r/20250926092426.43312-1-lance.yang@linux.dev
Signed-off-by: Lance Yang <lance.yang@linux.dev>
Reported-by: syzbot+60192c8877d0bc92a92b@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/linux-mm/68d6364e.050a0220.3390a8.000d.GAE@google.com
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jann Horn <jannh@google.com>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Marco Elver <elver@google.com>
Cc: Rik van Riel <riel@surriel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'rust/kernel/alloc/allocator.rs')
0 files changed, 0 insertions, 0 deletions