From: Alexei Starovoitov Date: Mon, 6 Jan 2025 18:59:50 +0000 (-0800) Subject: Merge branch 'bpf-allow-bpf_for-bpf_repeat-while-holding-spin' X-Git-Tag: v6.14-rc1~133^2~26 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=859a7db4c7db84b06ca7fc9c60eb45a130c8fbec;p=thirdparty%2Flinux.git Merge branch 'bpf-allow-bpf_for-bpf_repeat-while-holding-spin' Emil Tsalapatis says: ==================== In BPF programs, kfunc calls while holding a lock are not allowed because kfuncs may sleep by default. The exception to this rule are the functions in special_kfunc_list, which are guaranteed to not sleep. The bpf_iter_num_* functions used by the bpf_for and bpf_repeat macros make no function calls themselves, and as such are guaranteed to not sleep. Add them to special_kfunc_list to allow them within BPF spinlock critical sections. Signed-off-by: Emil Tsalapatis (Meta) ==================== Link: https://patch.msgid.link/20250104202528.882482-1-emil@etsalapatis.com Signed-off-by: Alexei Starovoitov --- 859a7db4c7db84b06ca7fc9c60eb45a130c8fbec