WARNING: line length of 82 exceeds 80 columns
#125: FILE: kernel/bpf/helpers.c:1170:
+	u32 __pad; /* Left for binary compatibility, previously stored spinlock */

WARNING: line length of 94 exceeds 80 columns
#189: FILE: kernel/bpf/helpers.c:1270:
+	/* Both timer and wq callbacks run under RCU lock, UAF should not be possible there */

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

WARNING: line length of 96 exceeds 80 columns
#358: FILE: kernel/bpf/helpers.c:1460:
+		if (unlikely(last_seq > U32_MAX)) { /* Check if terminal seq num has been set */

WARNING: line length of 91 exceeds 80 columns
#367: FILE: kernel/bpf/helpers.c:1469:
+				return -EBUSY; /* Someone else set it to DESTROYED, bail */

WARNING: line length of 81 exceeds 80 columns
#388: FILE: kernel/bpf/helpers.c:1490:
+		 * Try to commit read sequence number to own snapshot exclusively

WARNING: line length of 96 exceeds 80 columns
#391: FILE: kernel/bpf/helpers.c:1493:
+		return atomic64_try_cmpxchg_release(&cb->last_seq, &last_seq, seq) ? 0 : -EBUSY;

WARNING: line length of 83 exceeds 80 columns
#437: 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
#567: FILE: kernel/bpf/helpers.c:1653:
+		struct bpf_hrtimer *t = container_of(cb, struct bpf_hrtimer, cb);

WARNING: line length of 86 exceeds 80 columns
#583: FILE: kernel/bpf/helpers.c:1657:
+			hrtimer_start(&t->timer, ns_to_ktime(timer_nsec), timer_mode);

WARNING: line length of 83 exceeds 80 columns
#600: FILE: kernel/bpf/helpers.c:1674:
+			 * RCU grace period ensures callback completes before free.

WARNING: line length of 82 exceeds 80 columns
#626: FILE: kernel/bpf/helpers.c:1700:
+	struct bpf_async_cb *cb = container_of(work, struct bpf_async_cb, worker);

total: 0 errors, 12 warnings, 0 checks, 617 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 40e0fc78748f ("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, 12 warnings, 0 checks, 617 lines checked