diff options
Diffstat (limited to '')
| -rw-r--r-- | lib/Kconfig | 5 | ||||
| -rw-r--r-- | lib/Kconfig.debug | 15 | ||||
| -rw-r--r-- | lib/Kconfig.kcsan | 20 |
3 files changed, 40 insertions, 0 deletions
diff --git a/lib/Kconfig b/lib/Kconfig index 5e7165e6a346..655b0e43f260 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -680,6 +680,11 @@ config STACK_HASH_ORDER Select the hash size as a power of 2 for the stackdepot hash table. Choose a lower value to reduce the memory impact. +config REF_TRACKER + bool + depends on STACKTRACE_SUPPORT + select STACKDEPOT + config SBITMAP bool diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 5e14e32056ad..c77fe36bb3d8 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -599,6 +599,11 @@ config DEBUG_MISC Say Y here if you need to enable miscellaneous debug code that should be under a more specific debug option but isn't. +menu "Networking Debugging" + +source "net/Kconfig.debug" + +endmenu # "Networking Debugging" menu "Memory Debugging" @@ -2107,6 +2112,16 @@ config BACKTRACE_SELF_TEST Say N if you are unsure. +config TEST_REF_TRACKER + tristate "Self test for reference tracker" + depends on DEBUG_KERNEL && STACKTRACE_SUPPORT + select REF_TRACKER + help + This option provides a kernel module performing tests + using reference tracker infrastructure. + + Say N if you are unsure. + config RBTREE_TEST tristate "Red-Black tree test" depends on DEBUG_KERNEL diff --git a/lib/Kconfig.kcsan b/lib/Kconfig.kcsan index e0a93ffdef30..63b70b8c5551 100644 --- a/lib/Kconfig.kcsan +++ b/lib/Kconfig.kcsan @@ -191,6 +191,26 @@ config KCSAN_STRICT closely aligns with the rules defined by the Linux-kernel memory consistency model (LKMM). +config KCSAN_WEAK_MEMORY + bool "Enable weak memory modeling to detect missing memory barriers" + default y + depends on KCSAN_STRICT + # We can either let objtool nop __tsan_func_{entry,exit}() and builtin + # atomics instrumentation in .noinstr.text, or use a compiler that can + # implement __no_kcsan to really remove all instrumentation. + depends on STACK_VALIDATION || CC_IS_GCC || CLANG_VERSION >= 140000 + help + Enable support for modeling a subset of weak memory, which allows + detecting a subset of data races due to missing memory barriers. + + Depends on KCSAN_STRICT, because the options strenghtening certain + plain accesses by default (depending on !KCSAN_STRICT) reduce the + ability to detect any data races invoving reordered accesses, in + particular reordered writes. + + Weak memory modeling relies on additional instrumentation and may + affect performance. + config KCSAN_REPORT_VALUE_CHANGE_ONLY bool "Only report races where watcher observed a data value change" default y |