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(parent: e088ceb) | patch
ipv4: Fix a data-race around sysctl_fib_sync_mem.
authorKuniyuki Iwashima <kuniyu@amazon.com>
Wed, 6 Jul 2022 23:40:03 +0000 (16:40 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 21 Jul 2022 19:20:08 +0000 (21:20 +0200)
commit418b191d5f223a8cb6cab09eae1f72c04ba6adf2
tree759fa8123f1fa73acaf99c5b164ac3bd23789c80tree
parente088ceb73c24ab4774da391d54a6426f4bfaefcecommit | diff
ipv4: Fix a data-race around sysctl_fib_sync_mem.

[ Upstream commit 73318c4b7dbd0e781aaababff17376b2894745c0 ]

While reading sysctl_fib_sync_mem, it can be changed concurrently.
So, we need to add READ_ONCE() to avoid a data-race.

Fixes: 9ab948a91b2c ("ipv4: Allow amount of dirty memory from fib resizing to be controllable")
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>
net/ipv4/fib_trie.c diff | blob | history
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