We assume nothing interesting could happen in stackdepot, and save some memory by not tracking stackdepot allocations with KMSAN. Signed-off-by: Alexander Potapenko <glider@xxxxxxxxxx> Cc: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx> Cc: Jens Axboe <axboe@xxxxxxxxx> Cc: Andy Lutomirski <luto@xxxxxxxxxx> Cc: Vegard Nossum <vegard.nossum@xxxxxxxxxx> Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx> Cc: Christoph Hellwig <hch@xxxxxx> Cc: linux-mm@xxxxxxxxx --- Change-Id: Ic3ec9b3dff3fff2732d874508a3582fb26ff0b1f --- lib/stackdepot.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/lib/stackdepot.c b/lib/stackdepot.c index e2f000a9fad8..2b053c429454 100644 --- a/lib/stackdepot.c +++ b/lib/stackdepot.c @@ -294,7 +294,8 @@ depot_stack_handle_t stack_depot_save(unsigned long *entries, * contexts and I/O. */ alloc_flags &= ~GFP_ZONEMASK; - alloc_flags &= (GFP_ATOMIC | GFP_KERNEL); + alloc_flags &= (GFP_ATOMIC | GFP_KERNEL | + __GFP_NO_KMSAN_SHADOW); alloc_flags |= __GFP_NOWARN; page = alloc_pages(alloc_flags, STACK_ALLOC_ORDER); if (page) -- 2.24.0.432.g9d3f5f5b63-goog
