WARNING: line length of 84 exceeds 80 columns
#59: FILE: kernel/bpf/log.c:742:
+			if (slot_type != STACK_INVALID && slot_type != STACK_POISON)

WARNING: line length of 142 exceeds 80 columns
#109: FILE: kernel/bpf/verifier.c:5730:
+						verbose(env, "reading from stack off %d+%d size %d, slot poisoned by dead code elimination\n",

WARNING: line length of 107 exceeds 80 columns
#112: FILE: kernel/bpf/verifier.c:5733:
+						verbose(env, "invalid read from stack off %d+%d size %d\n",

WARNING: line length of 126 exceeds 80 columns
#125: FILE: kernel/bpf/verifier.c:5785:
+				verbose(env, "reading from stack off %d+%d size %d, slot poisoned by dead code elimination\n",

WARNING: line length of 91 exceeds 80 columns
#128: FILE: kernel/bpf/verifier.c:5788:
+				verbose(env, "invalid read from stack off %d+%d size %d\n",

WARNING: line length of 122 exceeds 80 columns
#169: FILE: kernel/bpf/verifier.c:8510:
+			verbose(env, "reading from stack R%d off %d+%d size %d, slot poisoned by dead code elimination\n",

WARNING: line length of 84 exceeds 80 columns
#181: FILE: kernel/bpf/verifier.c:8689:
+	int size = base_type(reg->type) == PTR_TO_STACK ? -(int)mem_size : mem_size;

WARNING: line length of 86 exceeds 80 columns
#184: FILE: kernel/bpf/verifier.c:8692:
+	err = err ?: check_helper_mem_access(env, regno, size, BPF_WRITE, true, NULL);

WARNING: line length of 101 exceeds 80 columns
#202: FILE: kernel/bpf/verifier.c:20548:
+		    ((stack->slot_type[i] == STACK_INVALID || stack->slot_type[i] == STACK_POISON) &&

WARNING: line length of 82 exceeds 80 columns
#217: FILE: kernel/bpf/verifier.c:20586:
+			u8 old_type = old->stack[spi].slot_type[i % BPF_REG_SIZE];

WARNING: line length of 98 exceeds 80 columns
#219: FILE: kernel/bpf/verifier.c:20588:
+				      cur->stack[spi].slot_type[i % BPF_REG_SIZE] : STACK_INVALID;

WARNING: line length of 87 exceeds 80 columns
#221: FILE: kernel/bpf/verifier.c:20590:
+			/* STACK_INVALID and STACK_POISON are equivalent for pruning */

WARNING: line length of 83 exceeds 80 columns
#231: FILE: kernel/bpf/verifier.c:20599:
+		if (old->stack[spi].slot_type[i % BPF_REG_SIZE] == STACK_INVALID ||

total: 0 errors, 13 warnings, 0 checks, 197 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 642c73f14ba7 ("bpf: poison dead stack slots") 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, 13 warnings, 0 checks, 197 lines checked