WARNING: line length of 101 exceeds 80 columns
#183: FILE: kernel/bpf/liveness.c:87:
+	u32 callsite;		/* call insn that invoked this subprog (subprog_start for depth 0) */

WARNING: line length of 106 exceeds 80 columns
#190: FILE: kernel/bpf/liveness.c:92:
+	u32 callsites[MAX_CALL_FRAMES]; /* callsites[i] = call insn at frame i (for outer frame lookup) */

WARNING: line length of 82 exceeds 80 columns
#200: FILE: kernel/bpf/liveness.c:100:
+	u32 callsites[MAX_CALL_FRAMES]; /* callsite[i] = insn calling frame i+1 */

WARNING: line length of 83 exceeds 80 columns
#224: FILE: kernel/bpf/liveness.c:113:
+ * For depth > 0, @callsite is the call instruction index that invoked the subprog.

WARNING: Prefer kvzalloc_obj over kvzalloc with sizeof
#332: FILE: kernel/bpf/liveness.c:149:
+	f = kvzalloc(sizeof(*f), GFP_KERNEL_ACCOUNT);

WARNING: line length of 97 exceeds 80 columns
#438: FILE: kernel/bpf/liveness.c:255:
+static int mark_stack_write(struct func_instance *instance, u32 frame, u32 insn_idx, spis_t mask)

WARNING: line length of 87 exceeds 80 columns
#535: FILE: kernel/bpf/liveness.c:269:
+static char *fmt_instance(struct bpf_verifier_env *env, struct func_instance *instance)

WARNING: line length of 89 exceeds 80 columns
#555: FILE: kernel/bpf/liveness.c:303:
+static void log_mask_change(struct bpf_verifier_env *env, struct func_instance *instance,

WARNING: line length of 97 exceeds 80 columns
#564: FILE: kernel/bpf/liveness.c:315:
+	bpf_log(&env->log, "%s frame %d insn %d ", fmt_instance(env, instance), frame, insn_idx);

WARNING: line length of 89 exceeds 80 columns
#673: FILE: kernel/bpf/liveness.c:441:
+static void update_instance(struct bpf_verifier_env *env, struct func_instance *instance)

WARNING: line length of 83 exceeds 80 columns
#785: FILE: kernel/bpf/liveness.c:505:
+	 * Slot is alive if it is read before q->insn_idx in current func instance,

WARNING: line length of 86 exceeds 80 columns
#805: FILE: kernel/bpf/liveness.c:522:
+		alive = is_live_before(curframe_instance, q->insn_idx, rel, half_spi);

WARNING: line length of 83 exceeds 80 columns
#821: FILE: kernel/bpf/liveness.c:537:
+		/* Get callsite from verifier state, not from instance callchain */

WARNING: line length of 88 exceeds 80 columns
#846: FILE: kernel/bpf/liveness.c:1112:
+				env->callsite_at_stack[instance->callsites[src->frame]];

WARNING: line length of 94 exceeds 80 columns
#884: FILE: kernel/bpf/liveness.c:1233:
+		record_stack_access_off(instance, arg->off[i], access_bytes, frame, insn_idx);

WARNING: line length of 86 exceeds 80 columns
#929: FILE: kernel/bpf/liveness.c:1349:
+			record_stack_access(instance, &at[r], bytes, frame, insn_idx);

WARNING: line length of 90 exceeds 80 columns
#1004: FILE: kernel/bpf/liveness.c:1740:
+				entry = get_frame_masks(callee_instance, f, callee_start);

WARNING: line length of 92 exceeds 80 columns
#1007: FILE: kernel/bpf/liveness.c:1743:
+				err = mark_stack_read(instance, f, idx, entry->live_before);

total: 0 errors, 18 warnings, 0 checks, 1099 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 9b76f0d4739f ("bpf: simplify liveness to use (callsite, depth) keyed func_instances") 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, 18 warnings, 0 checks, 1099 lines checked