KMSAN doesn't currently support lock debugging, causing the kernel to enter infinite recursion at boot time. See https://github.com/google/kmsan/issues/57. Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx> Cc: Eric Biggers <ebiggers@xxxxxxxxxx> Cc: Qian Cai <cai@xxxxxx> Cc: Christoph Hellwig <hch@xxxxxx> Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Cc: Harry Wentland <harry.wentland@xxxxxxx> Cc: Vegard Nossum <vegard.nossum@xxxxxxxxxx> Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx> Cc: linux-mm@xxxxxxxxx --- This patch is part of "kmsan: Kconfig changes to disable options incompatible with KMSAN", which was split into smaller pieces. diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 75c36318943d..a3f6f5d68593 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1068,6 +1068,9 @@ menu "Lock Debugging (spinlocks, mutexes, etc...)" config LOCK_DEBUGGING_SUPPORT bool depends on TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT + # KMSAN is incompatible with lockdep, + # see https://github.com/google/kmsan/issues/57. + depends on !KMSAN default y config PROVE_LOCKING Change-Id: I4f97edc8a02d8ca208fc914e55e8f0c23d74eac8 --- lib/Kconfig.debug | 3 +++ 1 file changed, 3 insertions(+) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 75c36318943d..a3f6f5d68593 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1068,6 +1068,9 @@ menu "Lock Debugging (spinlocks, mutexes, etc...)" config LOCK_DEBUGGING_SUPPORT bool depends on TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT + # KMSAN is incompatible with lockdep, + # see https://github.com/google/kmsan/issues/57. + depends on !KMSAN default y config PROVE_LOCKING -- 2.24.0.432.g9d3f5f5b63-goog
