diff options
author | Kuniyuki Iwashima <kuniyu@amazon.com> | 2022-07-11 17:15:20 -0700 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-07-21 21:24:26 +0200 |
commit | a716a3846c5ff32982ab1cc1ab27592221621958 (patch) | |
tree | 4ebdf70a96bb0eeaa498bdfd7ae507d2c32eb494 /drivers/fpga/fpga-mgr.c | |
parent | e58b02e445463065b4078bf621561da75197853f (diff) |
sysctl: Fix data-races in proc_dointvec_ms_jiffies().
[ Upstream commit 7d1025e559782b58824b36cb8ad547a69f2e4b31 ]
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_ms_jiffies() to use READ_ONCE() and
WRITE_ONCE() internally to fix data-races on the sysctl side. For now,
proc_dointvec_ms_jiffies() 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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/fpga/fpga-mgr.c')
0 files changed, 0 insertions, 0 deletions