[PATCH bpf-next v3 06/10] bpf: Bump MAX_BPF_STACK size to 768 bytes
From: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Date: 2021-09-15 05:10:16
Also in:
bpf
Subsystem:
bpf [core], bpf [general] (safe dynamic programs and tools), the rest · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Linus Torvalds
Increase the maximum stack size accessible to BPF program to 768 bytes. This is done so that gen_loader can use 94 additional fds for kfunc BTFs that it passes in to fd_array from the remaining space available for the loader_stack struct to expand. Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> --- include/linux/filter.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/filter.h b/include/linux/filter.h
index 4a93c12543ee..b214189ece62 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h@@ -82,8 +82,8 @@ struct ctl_table_header; */ #define BPF_SYM_ELF_TYPE 't' -/* BPF program can access up to 512 bytes of stack space. */ -#define MAX_BPF_STACK 512 +/* BPF program can access up to 768 bytes of stack space. */ +#define MAX_BPF_STACK 768 /* Helper macros for filter block array initializers. */
--
2.33.0