diff options
| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:50:03 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:50:03 +0000 |
| commit | 01a69402cf9d38ff180345d55c2ee51c7e89fbc7 (patch) | |
| tree | b406c5242a088c4f59c6e4b719b783f43aca6ae9 /lib/Kconfig.kasan | |
| parent | Adding upstream version 6.7.12. (diff) | |
| download | linux-01a69402cf9d38ff180345d55c2ee51c7e89fbc7.tar.xz linux-01a69402cf9d38ff180345d55c2ee51c7e89fbc7.zip | |
Adding upstream version 6.8.9.upstream/6.8.9
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/Kconfig.kasan')
| -rw-r--r-- | lib/Kconfig.kasan | 34 |
1 files changed, 25 insertions, 9 deletions
diff --git a/lib/Kconfig.kasan b/lib/Kconfig.kasan index fdca89c057..e6eda054ab 100644 --- a/lib/Kconfig.kasan +++ b/lib/Kconfig.kasan @@ -37,7 +37,7 @@ menuconfig KASAN (HAVE_ARCH_KASAN_SW_TAGS && CC_HAS_KASAN_SW_TAGS)) && \ CC_HAS_WORKING_NOSANITIZE_ADDRESS) || \ HAVE_ARCH_KASAN_HW_TAGS - depends on (SLUB && SYSFS && !SLUB_TINY) || (SLAB && !DEBUG_SLAB) + depends on SYSFS && !SLUB_TINY select STACKDEPOT_ALWAYS_INIT help Enables KASAN (Kernel Address Sanitizer) - a dynamic memory safety @@ -78,7 +78,7 @@ config KASAN_GENERIC bool "Generic KASAN" depends on HAVE_ARCH_KASAN && CC_HAS_KASAN_GENERIC depends on CC_HAS_WORKING_NOSANITIZE_ADDRESS - select SLUB_DEBUG if SLUB + select SLUB_DEBUG select CONSTRUCTORS help Enables Generic KASAN. @@ -89,13 +89,11 @@ config KASAN_GENERIC overhead of ~50% for dynamic allocations. The performance slowdown is ~x3. - (Incompatible with CONFIG_DEBUG_SLAB: the kernel does not boot.) - config KASAN_SW_TAGS bool "Software Tag-Based KASAN" depends on HAVE_ARCH_KASAN_SW_TAGS && CC_HAS_KASAN_SW_TAGS depends on CC_HAS_WORKING_NOSANITIZE_ADDRESS - select SLUB_DEBUG if SLUB + select SLUB_DEBUG select CONSTRUCTORS help Enables Software Tag-Based KASAN. @@ -110,12 +108,9 @@ config KASAN_SW_TAGS May potentially introduce problems related to pointer casting and comparison, as it embeds a tag into the top byte of each pointer. - (Incompatible with CONFIG_DEBUG_SLAB: the kernel does not boot.) - config KASAN_HW_TAGS bool "Hardware Tag-Based KASAN" depends on HAVE_ARCH_KASAN_HW_TAGS - depends on SLUB help Enables Hardware Tag-Based KASAN. @@ -134,7 +129,7 @@ endchoice choice prompt "Instrumentation type" depends on KASAN_GENERIC || KASAN_SW_TAGS - default KASAN_OUTLINE + default KASAN_INLINE if !ARCH_DISABLE_KASAN_INLINE config KASAN_OUTLINE bool "Outline instrumentation" @@ -207,4 +202,25 @@ config KASAN_MODULE_TEST A part of the KASAN test suite that is not integrated with KUnit. Incompatible with Hardware Tag-Based KASAN. +config KASAN_EXTRA_INFO + bool "Record and report more information" + depends on KASAN + help + Record and report more information to help us find the cause of the + bug and to help us correlate the error with other system events. + + Currently, the CPU number and timestamp are additionally + recorded for each heap block at allocation and free time, and + 8 bytes will be added to each metadata structure that records + allocation or free information. + + In Generic KASAN, each kmalloc-8 and kmalloc-16 object will add + 16 bytes of additional memory consumption, and each kmalloc-32 + object will add 8 bytes of additional memory consumption, not + affecting other larger objects. + + In SW_TAGS KASAN and HW_TAGS KASAN, depending on the stack_ring_size + boot parameter, it will add 8 * stack_ring_size bytes of additional + memory consumption. + endif # KASAN |