WARNING: line length of 82 exceeds 80 columns
#124: FILE: kernel/bpf/helpers.c:1171:
+	u32 __pad; /* Left for binary compatibility, previously stored spinlock */

WARNING: line length of 94 exceeds 80 columns
#188: FILE: kernel/bpf/helpers.c:1271:
+	/* Both timer and wq callbacks run under RCU lock, UAF should not be possible there */

WARNING: line length of 96 exceeds 80 columns
#265: FILE: kernel/bpf/helpers.c:1335:
+		/* Lost the race to initialize this bpf_async_kern, drop the allocated object */

WARNING: line length of 89 exceeds 80 columns
#335: FILE: kernel/bpf/helpers.c:1459:
+	if (!atomic64_try_cmpxchg_release(&cb->last_seq, &expected, BPF_ASYNC_DESTROYED))

WARNING: line length of 84 exceeds 80 columns
#350: FILE: kernel/bpf/helpers.c:1474:
+		if (last_seq > U32_MAX) /* Check if terminal seq num has been set */

WARNING: line length of 83 exceeds 80 columns
#415: FILE: kernel/bpf/helpers.c:1525:
+BPF_CALL_3(bpf_timer_start, struct bpf_async_kern *, async, u64, nsecs, u64, flags)

WARNING: line length of 81 exceeds 80 columns
#535: FILE: kernel/bpf/helpers.c:1639:
+		struct bpf_hrtimer *t = container_of(cb, struct bpf_hrtimer, cb);

WARNING: line length of 86 exceeds 80 columns
#551: FILE: kernel/bpf/helpers.c:1643:
+			hrtimer_start(&t->timer, ns_to_ktime(timer_nsec), timer_mode);

WARNING: line length of 83 exceeds 80 columns
#570: FILE: kernel/bpf/helpers.c:1662:
+			 * RCU grace period ensures callback completes before free.

WARNING: line length of 82 exceeds 80 columns
#584: FILE: kernel/bpf/helpers.c:1676:
+	struct bpf_async_cb *cb = container_of(work, struct bpf_async_cb, worker);

total: 0 errors, 10 warnings, 0 checks, 586 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 4ae8c42ecfb9 ("bpf: Enable bpf timer and workqueue use in NMI") 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, 10 warnings, 0 checks, 586 lines checked