Re: [PATCH bpf-next v3] bpf: verifier: Move desc->imm setup to sort_kfunc_descs_by_imm_off()

[patchwork-bot+netdevbpf@kernel.org]

Hello:

This patch was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov <ast@kernel.org>:

On Fri, 14 Nov 2025 15:40:22 +0000 you wrote:
> Metadata about a kfunc call is added to the kfunc_tab in
> add_kfunc_call() but the call instruction itself could get removed by
> opt_remove_dead_code() later if it is not reachable.
> 
> If the call instruction is removed, specialize_kfunc() is never called
> for it and the desc->imm in the kfunc_tab is never initialized for this
> kfunc call. In this case, sort_kfunc_descs_by_imm_off(env->prog); in
> do_misc_fixups() doesn't sort the table correctly.
> This is a problem for s390 as its JIT uses this table to find the
> addresses for kfuncs, and if this table is not sorted properly, JIT may
> fail to find addresses for valid kfunc calls.
> 
> [...]

Here is the summary with links:
  - [bpf-next,v3] bpf: verifier: Move desc->imm setup to sort_kfunc_descs_by_imm_off()
    https://git.kernel.org/bpf/bpf-next/c/4f7bc83b9837

You are awesome, thank you!
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