WARNING: line length of 83 exceeds 80 columns
#65: FILE: include/linux/bpf_verifier.h:397:
+	 * INSN_F_STACK_ARG_ACCESS uses INSN_F_STACK_ACCESS | INSN_F_DST_REG_STACK.

WARNING: line length of 95 exceeds 80 columns
#86: FILE: include/linux/bpf_verifier.h:1184:
+static inline void bt_set_frame_stack_arg_slot(struct backtrack_state *bt, u32 frame, u32 slot)

WARNING: line length of 87 exceeds 80 columns
#103: FILE: kernel/bpf/backtrack.c:138:
+		mask |= bt->reg_masks[i] | bt->stack_masks[i] | bt->stack_arg_masks[i];

WARNING: line length of 97 exceeds 80 columns
#108: FILE: kernel/bpf/backtrack.c:143:
+static inline void bt_clear_frame_stack_arg_slot(struct backtrack_state *bt, u32 frame, u32 slot)

WARNING: line length of 98 exceeds 80 columns
#113: FILE: kernel/bpf/backtrack.c:148:
+static inline bool bt_is_frame_stack_arg_slot_set(struct backtrack_state *bt, u32 frame, u32 slot)

WARNING: line length of 97 exceeds 80 columns
#137: FILE: kernel/bpf/backtrack.c:359:
+		if (hist && (hist->flags & INSN_F_STACK_ARG_ACCESS) == INSN_F_STACK_ARG_ACCESS) {

WARNING: line length of 97 exceeds 80 columns
#152: FILE: kernel/bpf/backtrack.c:389:
+		if (hist && (hist->flags & INSN_F_STACK_ARG_ACCESS) == INSN_F_STACK_ARG_ACCESS) {

WARNING: line length of 82 exceeds 80 columns
#170: FILE: kernel/bpf/backtrack.c:468:
+				/* propagate callee's incoming stack arg precision

WARNING: line length of 105 exceeds 80 columns
#174: FILE: kernel/bpf/backtrack.c:472:
+					for (i = 0; i < MAX_BPF_FUNC_ARGS - MAX_BPF_FUNC_REG_ARGS; i++) {

WARNING: line length of 102 exceeds 80 columns
#175: FILE: kernel/bpf/backtrack.c:473:
+						if (!bt_is_frame_stack_arg_slot_set(bt, bt->frame, i))

WARNING: Too many leading tabs - consider code refactoring
#175: FILE: kernel/bpf/backtrack.c:473:
+						if (!bt_is_frame_stack_arg_slot_set(bt, bt->frame, i))

WARNING: line length of 96 exceeds 80 columns
#177: FILE: kernel/bpf/backtrack.c:475:
+						bt_clear_frame_stack_arg_slot(bt, bt->frame, i);

WARNING: line length of 98 exceeds 80 columns
#178: FILE: kernel/bpf/backtrack.c:476:
+						bt_set_frame_stack_arg_slot(bt, bt->frame - 1, i);

WARNING: line length of 88 exceeds 80 columns
#189: FILE: kernel/bpf/backtrack.c:501:
+			/* clear r1-r5 and stack arg slots in callback subprog's mask */

WARNING: line length of 88 exceeds 80 columns
#200: FILE: kernel/bpf/backtrack.c:950:
+			for (i = 0; i < func->out_stack_arg_depth / BPF_REG_SIZE; i++) {

WARNING: line length of 81 exceeds 80 columns
#205: FILE: kernel/bpf/backtrack.c:955:
+					bt_clear_frame_stack_arg_slot(bt, fr, i);

WARNING: line length of 89 exceeds 80 columns
#236: FILE: kernel/bpf/verifier.c:4493:
+				    insn_stack_arg_access_flags(state->frameno, spi), 0);

WARNING: line length of 89 exceeds 80 columns
#246: FILE: kernel/bpf/verifier.c:4529:
+				    insn_stack_arg_access_flags(state->frameno, spi), 0);

WARNING: line length of 92 exceeds 80 columns
#271: FILE: kernel/bpf/verifier.c:7294:
+			err = mark_stack_arg_precision(env, arg_from_argno(size_argno) - 1);

total: 0 errors, 19 warnings, 0 checks, 194 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 e0846ee7d2a1 ("bpf: Add precision marking and backtracking for stack argument 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, 19 warnings, 0 checks, 194 lines checked