WARNING: line length of 91 exceeds 80 columns
#28: FILE: kernel/bpf/stackmap.c:249:
+			      struct perf_callchain_entry *trace, u64 flags, u32 max_depth)

WARNING: line length of 85 exceeds 80 columns
#60: FILE: kernel/bpf/stackmap.c:336:
+	max_depth = stack_map_calculate_max_depth(map->value_size, elem_size, flags);

WARNING: line length of 96 exceeds 80 columns
#94: FILE: kernel/bpf/stackmap.c:403:
+		pe_max_depth = stack_map_calculate_max_depth(map->value_size, elem_size, flags);

WARNING: line length of 96 exceeds 80 columns
#108: FILE: kernel/bpf/stackmap.c:415:
+		pe_max_depth = stack_map_calculate_max_depth(map->value_size, elem_size, flags);

WARNING: The commit message has 'syzkaller', perhaps it also needs a 'Fixes:' tag?

total: 0 errors, 5 warnings, 0 checks, 84 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 5c343f98432c ("bpf: fix stackmap overflow check in __bpf_get_stackid()") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE 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, 5 warnings, 0 checks, 84 lines checked