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| author | Dmitry Vyukov <dvyukov@google.com> | 2018-08-29 16:16:48 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-08-29 16:16:48 -0700 |
| commit | e766b07a54b5ad857651e2c4abf46b059014e9b5 (patch) | |
| tree | 3c3dc3392c3ac53c07636e0e9f582fbf154bced5 /docs/linux | |
| parent | 2c6cb254ae6c06f61e3aba21bb89ffb05b5db946 (diff) | |
Update kernel_configs.md
Diffstat (limited to 'docs/linux')
| -rw-r--r-- | docs/linux/kernel_configs.md | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/docs/linux/kernel_configs.md b/docs/linux/kernel_configs.md index 46b3fcb88..2d5a9cf04 100644 --- a/docs/linux/kernel_configs.md +++ b/docs/linux/kernel_configs.md @@ -1,6 +1,6 @@ # Linux kernel configs -List of recommended kernel configs for `syzkaller`: +List of recommended kernel configs for `syzkaller`. See [syzbot config](/dashboard/config/upstream-kasan.config) for a reference config. ## Syzkaller features @@ -38,8 +38,8 @@ CONFIG_PID_NS=y CONFIG_NET_NS=y ``` -If your kernel doesn't have commits [arm64: setup: introduce kaslr_offset()](https://github.com/torvalds/linux/commit/7ede8665f27cde7da69e8b2fbeaa1ed0664879c5) - and [kcov: make kcov work properly with KASLR enabled](https://github.com/torvalds/linux/commit/4983f0ab7ffaad1e534b21975367429736475205), disable the following config: +It is recommended to disable the following config (and required if your kernel doesn't have commits [arm64: setup: introduce kaslr_offset()](https://github.com/torvalds/linux/commit/7ede8665f27cde7da69e8b2fbeaa1ed0664879c5) + and [kcov: make kcov work properly with KASLR enabled](https://github.com/torvalds/linux/commit/4983f0ab7ffaad1e534b21975367429736475205)): ``` # CONFIG_RANDOMIZE_BASE is not set ``` @@ -89,11 +89,13 @@ CONFIG_HARDENED_USERCOPY=y CONFIG_LOCKUP_DETECTOR=y CONFIG_SOFTLOCKUP_DETECTOR=y CONFIG_HARDLOCKUP_DETECTOR=y +CONFIG_BOOTPARAM_HARDLOCKUP_PANIC=y CONFIG_DETECT_HUNG_TASK=y CONFIG_WQ_WATCHDOG=y ``` -Increase RCU stall timeout to reduce false positive rate: +Increase hung/stall timeout to reduce false positive rate: ``` -CONFIG_RCU_CPU_STALL_TIMEOUT=60 +CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=140 +CONFIG_RCU_CPU_STALL_TIMEOUT=100 ``` |