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

WARNING: line length of 82 exceeds 80 columns
#183: FILE: kernel/bpf/liveness.c:99:
+	u32 callsites[MAX_CALL_FRAMES]; /* callsite[i] = insn calling frame i+1 */

WARNING: line length of 101 exceeds 80 columns
#190: FILE: kernel/bpf/liveness.c:105:
+	DECLARE_HASHTABLE(func_instances, 8);		/* maps (depth, callsite) to func_instance */

WARNING: line length of 83 exceeds 80 columns
#229: 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
#317: FILE: kernel/bpf/liveness.c:149:
+	f = kvzalloc(sizeof(*f), GFP_KERNEL_ACCOUNT);

WARNING: line length of 97 exceeds 80 columns
#458: FILE: kernel/bpf/liveness.c:251:
+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
#508: FILE: kernel/bpf/liveness.c:262:
+static char *fmt_instance(struct bpf_verifier_env *env, struct func_instance *instance)

WARNING: line length of 89 exceeds 80 columns
#533: FILE: kernel/bpf/liveness.c:296:
+static void log_mask_change(struct bpf_verifier_env *env, struct func_instance *instance,

WARNING: line length of 97 exceeds 80 columns
#542: FILE: kernel/bpf/liveness.c:308:
+	bpf_log(&env->log, "%s frame %d insn %d ", fmt_instance(env, instance), frame, insn_idx);

WARNING: line length of 89 exceeds 80 columns
#651: FILE: kernel/bpf/liveness.c:434:
+static void update_instance(struct bpf_verifier_env *env, struct func_instance *instance)

WARNING: line length of 83 exceeds 80 columns
#764: FILE: kernel/bpf/liveness.c:496:
+	 * Slot is alive if it is read before q->insn_idx in current func instance,

WARNING: line length of 86 exceeds 80 columns
#784: FILE: kernel/bpf/liveness.c:513:
+		alive = is_live_before(curframe_instance, q->insn_idx, rel, half_spi);

WARNING: line length of 83 exceeds 80 columns
#800: FILE: kernel/bpf/liveness.c:528:
+		/* Get callsite from verifier state, not from instance callchain */

WARNING: line length of 81 exceeds 80 columns
#835: FILE: kernel/bpf/liveness.c:1194:
+			return mark_stack_write(instance, frame, insn_idx, mask);

WARNING: line length of 100 exceeds 80 columns
#854: FILE: kernel/bpf/liveness.c:1222:
+		err = record_stack_access_off(instance, arg->off[i], access_bytes, frame, insn_idx);

WARNING: line length of 84 exceeds 80 columns
#881: FILE: kernel/bpf/liveness.c:1302:
+		return record_stack_access(instance, ptr, sz, ptr->frame, insn_idx);

WARNING: line length of 92 exceeds 80 columns
#899: FILE: kernel/bpf/liveness.c:1349:
+			err = record_stack_access(instance, &at[r], bytes, frame, insn_idx);

WARNING: line length of 81 exceeds 80 columns
#949: FILE: kernel/bpf/liveness.c:1660:
+static void merge_instances(struct func_instance *dst, struct func_instance *src)

WARNING: line length of 98 exceeds 80 columns
#955: FILE: kernel/bpf/liveness.c:1666:
+			/* This pass didn't touch frame f — must_write intersects with empty. */

WARNING: line length of 81 exceeds 80 columns
#958: FILE: kernel/bpf/liveness.c:1669:
+					dst->frames[f][i].must_write = SPIS_ZERO;

WARNING: line length of 95 exceeds 80 columns
#962: FILE: kernel/bpf/liveness.c:1673:
+			/* Previous pass didn't touch frame f — take src, zero must_write. */

CHECK: Please don't use multiple blank lines
#1025: FILE: kernel/bpf/liveness.c:1748:
 
+

WARNING: line length of 90 exceeds 80 columns
#1093: FILE: kernel/bpf/liveness.c:1842:
+				entry = get_frame_masks(callee_instance, f, callee_start);

WARNING: line length of 92 exceeds 80 columns
#1096: FILE: kernel/bpf/liveness.c:1845:
+				err = mark_stack_read(instance, f, idx, entry->live_before);

total: 0 errors, 23 warnings, 1 checks, 1190 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 0a1d2482e10c ("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, 23 warnings, 1 checks, 1190 lines checked