diff options
| author |   Kuniyuki Iwashima <kuniyu@amazon.com> | 2022-07-06 16:39:52 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2022-07-08 12:10:32 +0100 |
| commit | 1f1be04b4d48a2475ea1aab46a99221bfc5c0968 (patch) | |
| tree | 2aa39a8fa8df5ab4e128551289ea774822d13c98 /tools/perf/scripts/python/export-to-sqlite.py | |
| parent | net: sock: tracing: Fix sock_exceed_buf_limit not to dereference stale pointer (diff) | |
| download | linux-dev-1f1be04b4d48a2475ea1aab46a99221bfc5c0968.tar.xz linux-dev-1f1be04b4d48a2475ea1aab46a99221bfc5c0968.zip | |
sysctl: Fix data races in proc_dointvec().
A sysctl variable is accessed concurrently, and there is always a chance
of data-race. So, all readers and writers need some basic protection to
avoid load/store-tearing.
This patch changes proc_dointvec() to use READ_ONCE() and WRITE_ONCE()
internally to fix data-races on the sysctl side. For now, proc_dointvec()
itself is tolerant to a data-race, but we still need to add annotations on
the other subsystem's side.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/perf/scripts/python/export-to-sqlite.py')
0 files changed, 0 insertions, 0 deletions