diff options
Diffstat (limited to 'lib/Kconfig.debug')
| -rw-r--r-- | lib/Kconfig.debug | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 94eb2667b7e1..aac60b6cfa4b 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1618,14 +1618,22 @@ config LOCKDEP_STACK_TRACE_BITS int "Size for MAX_STACK_TRACE_ENTRIES (as Nth power of 2)" depends on LOCKDEP && !LOCKDEP_SMALL range 10 26 + default 21 if KASAN default 19 help Try increasing this value if you hit "BUG: MAX_STACK_TRACE_ENTRIES too low!" message. + KASAN significantly increases stack trace consumption because its + slab tracking interacts with lockdep's dependency validation under + PREEMPT_FULL, creating a feedback loop. The higher default when + KASAN is enabled costs ~12MB extra, which is negligible compared to + KASAN's own shadow memory overhead. + config LOCKDEP_STACK_TRACE_HASH_BITS int "Size for STACK_TRACE_HASH_SIZE (as Nth power of 2)" depends on LOCKDEP && !LOCKDEP_SMALL range 10 26 + default 16 if KASAN default 14 help Try increasing this value if you need large STACK_TRACE_HASH_SIZE. |