Alexander Potapenko fdea03e12a mm: kmsan: handle alloc failures in kmsan_ioremap_page_range() ... Similarly to kmsan_vmap_pages_range_noflush(), kmsan_ioremap_page_range() must also properly handle allocation/mapping failures. In the case of such, it must clean up the already created metadata mappings and return an error code, so that the error can be propagated to ioremap_page_range(). Without doing so, KMSAN may silently fail to bring the metadata for the page range into a consistent state, which will result in user-visible crashes when trying to access them. Link: https://lkml.kernel.org/r/20230413131223.4135168-2-glider@google.com Fixes: b073d7f8ae ("mm: kmsan: maintain KMSAN metadata for page operations") Signed-off-by: Alexander Potapenko <glider@google.com> Reported-by: Dipanjan Das <mail.dipanjan.das@gmail.com> Link: https://lore.kernel.org/linux-mm/CANX2M5ZRrRA64k0hOif02TjmY9kbbO2aCBPyq79es34RXZ=cAw@mail.gmail.com/ Reviewed-by: Marco Elver <elver@google.com> Cc: Christoph Hellwig <hch@infradead.org> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Uladzislau Rezki (Sony) <urezki@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2023-04-18 14:22:13 -07:00
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core.c	lib/stacktrace, kasan, kmsan: rework extra_bits interface	2023-02-16 20:43:51 -08:00
hooks.c	mm: kmsan: handle alloc failures in kmsan_ioremap_page_range()	2023-04-18 14:22:13 -07:00
init.c	init: kmsan: call KMSAN initialization routines	2022-10-03 14:03:21 -07:00
instrumentation.c	kmsan: silence -Wmissing-prototypes warnings	2023-02-02 22:33:05 -08:00
kmsan_test.c	kmsan: include linux/vmalloc.h	2022-12-21 14:31:51 -08:00
kmsan.h	kmsan: core: kmsan_in_runtime() should return true in NMI context	2022-11-08 15:57:24 -08:00
Makefile	kmsan: disable ftrace in kmsan core code	2023-02-20 12:46:16 -08:00
report.c	kmsan: add KMSAN runtime core	2022-10-03 14:03:19 -07:00
shadow.c	mm: kmsan: handle alloc failures in kmsan_vmap_pages_range_noflush()	2023-04-18 14:22:13 -07:00