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bpf: Use hlist_add_head_rcu when linking to local_storage #84

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bpf: Use hlist_add_head_rcu when linking to local_storage #84

wants to merge 2 commits into from

Commits on Sep 18, 2020

  1. adding ci files

    @kernel-patches-bot
    kernel-patches-bot committed Sep 18, 2020
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  2. The local_storage->list will be traversed by rcu reader in parallel. 

    Thus, hlist_add_head_rcu() is needed in bpf_selem_link_storage_nolock().
This patch fixes it.

This part of the code has recently been refactored in bpf-next
and this patch makes changes to the new file "bpf_local_storage.c".
Instead of using the original offending commit in the Fixes tag,
the commit that created the file "bpf_local_storage.c" is used.

A separate fix has been provided to the bpf tree.

Fixes: 450af8d ("bpf: Split bpf_local_storage to bpf_sk_storage")
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
---
 kernel/bpf/bpf_local_storage.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
    @iamkafai @kernel-patches-bot
    iamkafai authored and kernel-patches-bot committed Sep 18, 2020
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