diff options
| author | Jiayuan Chen <jiayuan.chen@linux.dev> | 2026-05-20 10:34:09 +0800 |
|---|---|---|
| committer | Florian Westphal <fw@strlen.de> | 2026-05-22 12:28:46 +0200 |
| commit | 1d001b0a6182b0d2f41a8d687f7522b6f1e94280 (patch) | |
| tree | 2644aa06d31eef92c23663b02724f386f88859f0 /include/linux/errseq.h | |
| parent | f438d1786d657d57790c5d138d6db3fc9fdac392 (diff) | |
netfilter: nft_fib_ipv6: walk fib6_siblings under RCU
nft_fib6_info_nh_uses_dev() runs from nft_fib6_eval() in softirq under
rcu_read_lock(). fib6_siblings is modified by writers that hold
tb6_lock but do not wait for RCU readers, so the sibling walk should
use list_for_each_entry_rcu(): it adds READ_ONCE() on the ->next
pointer and lets CONFIG_PROVE_RCU_LIST validate the locking.
No functional change for non-debug builds.
Fixes: 1c32b24c234b ("netfilter: nft_fib_ipv6: switch to fib6_lookup")
Signed-off-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Signed-off-by: Florian Westphal <fw@strlen.de>
Diffstat (limited to 'include/linux/errseq.h')
0 files changed, 0 insertions, 0 deletions