linux/mm/shmem.c
Jaeyeon Lee 889d3783ae mm/shmem: annotate benign data-race in shmem_getattr()
shmem_getattr() reads info->alloced, info->swapped and i_mapping->nrpages
without info->lock to decide whether shmem_recalc_inode() should be
called.  shmem_recalc_inode() recomputes these under info->lock, so a
stale read here only affects whether shmem_recalc_inode() runs.

Annotate data_race() to silence KCSAN.

Link: https://lore.kernel.org/20260708111941.35460-1-jaeyeon.lee.dev@gmail.com
Signed-off-by: Jaeyeon Lee <jaeyeon.lee.dev@gmail.com>
Reported-by: syzbot+dfb578404df369f6599b@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=dfb578404df369f6599b
Cc: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Marco Elver <elver@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2026-08-04 19:18:35 -07:00

5975 lines
156 KiB