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| author | Dmitry Vyukov <dvyukov@google.com> | 2022-01-13 15:19:29 +0100 |
|---|---|---|
| committer | Aleksandr Nogikh <wp32pw@gmail.com> | 2022-01-13 17:03:25 +0100 |
| commit | 68e7546e6d355c6bb5635120b5c9e020afdd7688 (patch) | |
| tree | 3887e82c7820a615819af77c9623eb19ddf9b6ee | |
| parent | 2257505bcf725a8d7e70611196bb09dad4538827 (diff) | |
tools/syz-check: update docs
Mention issue with DWARF4+ and bitfields.
Mention kernel configs that must be used for kernel builds.
| -rw-r--r-- | tools/syz-check/check.go | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/tools/syz-check/check.go b/tools/syz-check/check.go index 91f5ead47..63606d23a 100644 --- a/tools/syz-check/check.go +++ b/tools/syz-check/check.go @@ -8,7 +8,14 @@ // -obj-386 /linux_386/vmlinux -obj-arm /linux_arm/vmlinux // // The vmlinux files should include debug info, enable all relevant configs (since we parse dwarf), -// and be compiled with -fno-eliminate-unused-debug-types -fno-eliminate-unused-debug-symbols flags. +// and be compiled with -gdwarf-3 -fno-eliminate-unused-debug-types -fno-eliminate-unused-debug-symbols flags. +// -gdwarf-3 is required because version 4 changes the way bitfields are encoded and Go before 1.18 +// does not support then new encoding and at least earlier versions mis-handle it, see: +// https://go-review.googlesource.com/c/go/+/328709/comments/edf0619d_daec236f +// +// Use the following configs for kernels (x86_64 config for i386 as well): +// upstream-apparmor-kasan.config, upstream-arm-full.config, upstream-arm64-full.config +// // You may check only one arch as well (but then don't commit changes to warn files): // // $ syz-check -obj-amd64 /linux_amd64/vmlinux |