WARNING: line length of 97 exceeds 80 columns
#70: FILE: kernel/bpf/arena.c:57:
+	return arena ? (u64) round_up((long) arena->kern_vm->addr + GUARD_SZ / 2, PAGE_SIZE) : 0;

CHECK: No space is necessary after a cast
#70: FILE: kernel/bpf/arena.c:57:
+	return arena ? (u64) round_up((long) arena->kern_vm->addr + GUARD_SZ / 2, PAGE_SIZE) : 0;

total: 0 errors, 1 warnings, 1 checks, 8 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 4e7cbe44d0b8 ("bpf/arena: fix softlockup in arena_map_free on 64k page kernel") 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, 1 warnings, 1 checks, 8 lines checked