diff options
| -rw-r--r-- | config/Config-kernel.in | 23 | ||||
| -rw-r--r-- | target/linux/generic/config-5.10 | 2 | ||||
| -rw-r--r-- | target/linux/generic/config-5.4 | 1 |
3 files changed, 26 insertions, 0 deletions
diff --git a/config/Config-kernel.in b/config/Config-kernel.in index 2243e3e5bc..902e211ea1 100644 --- a/config/Config-kernel.in +++ b/config/Config-kernel.in @@ -114,6 +114,16 @@ config KERNEL_UBSAN_ALIGNMENT Enabling this option on architectures that support unaligned accesses may produce a lot of false positives. +config KERNEL_UBSAN_BOUNDS + bool "Perform array index bounds checking" + depends on KERNEL_UBSAN + help + This option enables detection of directly indexed out of bounds array + accesses, where the array size is known at compile time. Note that + this does not protect array overflows via bad calls to the + {str,mem}*cpy() family of functions (that is addressed by + FORTIFY_SOURCE). + config KERNEL_UBSAN_NULL bool "Enable checking of null pointers" depends on KERNEL_UBSAN @@ -121,6 +131,19 @@ config KERNEL_UBSAN_NULL This option enables detection of memory accesses via a null pointer. +config KERNEL_UBSAN_TRAP + bool "On Sanitizer warnings, abort the running kernel code" + depends on KERNEL_UBSAN + help + Building kernels with Sanitizer features enabled tends to grow the + kernel size by around 5%, due to adding all the debugging text on + failure paths. To avoid this, Sanitizer instrumentation can just + issue a trap. This reduces the kernel size overhead but turns all + warnings (including potentially harmless conditions) into full + exceptions that abort the running kernel code (regardless of context, + locks held, etc), which may destabilize the system. For some system + builders this is an acceptable trade-off. + config KERNEL_KASAN bool "Compile the kernel with KASan: runtime memory debugger" select KERNEL_SLUB_DEBUG diff --git a/target/linux/generic/config-5.10 b/target/linux/generic/config-5.10 index 403712d0e9..604d5e4e6c 100644 --- a/target/linux/generic/config-5.10 +++ b/target/linux/generic/config-5.10 @@ -6083,6 +6083,7 @@ CONFIG_TCP_CONG_CUBIC=y # CONFIG_TEST_STRING_HELPERS is not set # CONFIG_TEST_STRSCPY is not set # CONFIG_TEST_SYSCTL is not set +# CONFIG_TEST_UBSAN is not set # CONFIG_TEST_UDELAY is not set # CONFIG_TEST_USER_COPY is not set # CONFIG_TEST_UUID is not set @@ -6349,6 +6350,7 @@ CONFIG_UBIFS_FS_ZLIB=y CONFIG_UBIFS_FS_ZSTD=y # CONFIG_UBSAN is not set CONFIG_UBSAN_ALIGNMENT=y +# CONFIG_UBSAN_MISC is not set # CONFIG_UCB1400_CORE is not set # CONFIG_UCSI is not set # CONFIG_UDF_FS is not set diff --git a/target/linux/generic/config-5.4 b/target/linux/generic/config-5.4 index c44e9cf40b..bf2b462529 100644 --- a/target/linux/generic/config-5.4 +++ b/target/linux/generic/config-5.4 @@ -5631,6 +5631,7 @@ CONFIG_TCP_CONG_CUBIC=y # CONFIG_TEST_STRING_HELPERS is not set # CONFIG_TEST_STRSCPY is not set # CONFIG_TEST_SYSCTL is not set +# CONFIG_TEST_UBSAN is not set # CONFIG_TEST_UDELAY is not set # CONFIG_TEST_USER_COPY is not set # CONFIG_TEST_UUID is not set |