WARNING: Use of volatile is usually wrong: see Documentation/process/volatile-considered-harmful.rst
#66: FILE: tools/testing/selftests/bpf/progs/arena_atomics.c:174:
+volatile __u64 __arena_global uaf_recovery_fails;

WARNING: please, no spaces at the start of a line
#74: FILE: tools/testing/selftests/bpf/progs/arena_atomics.c:182:
+    !defined(__TARGET_ARCH_x86)$

CHECK: spaces preferred around that '*' (ctx:WxV)
#75: FILE: tools/testing/selftests/bpf/progs/arena_atomics.c:183:
+	__u32 __arena *page32;
 	              ^

total: 0 errors, 2 warnings, 1 checks, 109 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 2c038b4de0ff ("selftests/bpf: Add UAF tests for arena atomics") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE 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, 1 checks, 109 lines checked