Re: [PATCH net] netlink: do not free nlk->groups while lockless readers can use it

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski [off-list ref]:

On Fri, 11 Sep 2026 16:08:04 +0000 you wrote:

netlink_realloc_groups() uses krealloc() under netlink_table_grab().
Whenever NLGRPSZ(groups) lands in a different kmalloc bucket, the old
bitmap is freed immediately.

Two readers of nlk->groups / nlk->ngroups do not hold the netlink
table lock:

[...]

Here is the summary with links:
  - [net] netlink: do not free nlk->groups while lockless readers can use it
    https://git.kernel.org/netdev/net/c/ceac0de741bf

You are awesome, thank you!
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