Commit 951d7901 authored by Yonghong Song's avatar Yonghong Song Committed by Alexei Starovoitov
Browse files

selftests/bpf: Fix verifier_arena_globals1 failure with 64K page 



With 64K page on arm64, verifier_arena_globals1 failed like below:
  ...
  libbpf: map 'arena': failed to create: -E2BIG
  ...
  #509/1   verifier_arena_globals1/check_reserve1:FAIL
  ...

For 64K page, if the number of arena pages is (1UL << 20), the total
memory will exceed 4G and this will cause map creation failure.
Adjusting ARENA_PAGES based on the actual page size fixed the problem.

Cc: Emil Tsalapatis <emil@etsalapatis.com>
Signed-off-by: default avatarYonghong Song <yonghong.song@linux.dev>
Reviewed-by: default avatarEmil Tsalapatis <emil@etsalapatis.com>
Link: https://lore.kernel.org/r/20260113061033.3798549-1-yonghong.song@linux.dev


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent d2f7cd20

tools/testing/selftests/bpf/progs/verifier_arena_globals1.c

+1 −1
Original line number Diff line number Diff line
@@ -9,7 +9,7 @@ 
#include "bpf_arena_common.h"

#include "bpf_misc.h"



#define ARENA_PAGES (1UL<< (32 - 12))

#define ARENA_PAGES (1UL<< (32 - __builtin_ffs(__PAGE_SIZE) + 1))

#define GLOBAL_PAGES (16)



struct {