CHECK: Please use a blank line after function/struct/union/enum declarations
#23: FILE: tools/testing/selftests/bpf/progs/verifier_arena.c:480:
 }
+/*

CHECK: spaces preferred around that '*' (ctx:WxV)
#32: FILE: tools/testing/selftests/bpf/progs/verifier_arena.c:489:
+	int __arena *result, *arena_ptr;
 	            ^

WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#35: FILE: tools/testing/selftests/bpf/progs/verifier_arena.c:492:
+	volatile char __arena *base = arena_base(&arena);

CHECK: Lines should not end with a '('
#38: FILE: tools/testing/selftests/bpf/progs/verifier_arena.c:495:
+	asm volatile (

WARNING: From:/Signed-off-by: email address mismatch: 'From: Emil Tsalapatis <etsal@meta.com>' != 'Signed-off-by: Emil Tsalapatis <emil@etsalapatis.com>'

total: 0 errors, 2 warnings, 3 checks, 33 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit 542f438d075d ("selftests/bpf: Add test for scalar/arena pointer addition") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 2 warnings, 3 checks, 33 lines checked