From: Benjamin Tissoires Date: Mon, 8 Jul 2024 09:52:57 +0000 (+0200) Subject: bpf: helpers: fix bpf_wq_set_callback_impl signature X-Git-Tag: v6.10.3~577 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=0faaa5f29e5130610114f8bd055a724c75029edb;p=thirdparty%2Fkernel%2Fstable.git bpf: helpers: fix bpf_wq_set_callback_impl signature [ Upstream commit f56f4d541eab1ae060a46b56dd6ec9130d6e3a98 ] I realized this while having a map containing both a struct bpf_timer and a struct bpf_wq: the third argument provided to the bpf_wq callback is not the struct bpf_wq pointer itself, but the pointer to the value in the map. Which means that the users need to double cast the provided "value" as this is not a struct bpf_wq *. This is a change of API, but there doesn't seem to be much users of bpf_wq right now, so we should be able to go with this right now. Fixes: 81f1d7a583fa ("bpf: wq: add bpf_wq_set_callback_impl") Signed-off-by: Benjamin Tissoires Link: https://lore.kernel.org/r/20240708-fix-wq-v2-1-667e5c9fbd99@kernel.org Signed-off-by: Alexei Starovoitov Signed-off-by: Sasha Levin --- diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c index 3243c83ef3e39..7268370600f6e 100644 --- a/kernel/bpf/helpers.c +++ b/kernel/bpf/helpers.c @@ -2786,7 +2786,7 @@ __bpf_kfunc int bpf_wq_start(struct bpf_wq *wq, unsigned int flags) } __bpf_kfunc int bpf_wq_set_callback_impl(struct bpf_wq *wq, - int (callback_fn)(void *map, int *key, struct bpf_wq *wq), + int (callback_fn)(void *map, int *key, void *value), unsigned int flags, void *aux__ign) {