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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
..
acpi ACPI: x86: Introduce an acpi_quirk_skip_gpio_event_handlers() helper 2023-03-07 14:15:10 +01:00
asm-generic Driver core changes for 6.3-rc1 2023-02-24 12:58:55 -08:00
clocksource
crypto
drm drm/bridge: Fix returned array size name for atomic_get_input_bus_fmts kdoc 2023-03-15 10:06:06 +01:00
dt-bindings ARM: SoC drivers for 6.3 2023-02-27 10:04:49 -08:00
keys
kunit
kvm KVM: arm64: timers: Convert per-vcpu virtual offset to a global value 2023-03-11 02:00:40 -08:00
linux mm: kmsan: handle alloc failures in kmsan_ioremap_page_range() 2023-04-18 14:22:13 -07:00
math-emu
media media updates for v6.3-rc1 2023-02-26 11:47:26 -08:00
memory
misc
net Bluetooth: btintel: Iterate only bluetooth device ACPI entries 2023-03-22 16:05:55 -07:00
pcmcia
ras
rdma
rv
scsi scsi: core: Add BLIST_NO_VPD_SIZE for some VDASD 2023-03-09 20:57:58 -05:00
soc
sound sound fixes for 6.3-rc1 2023-03-04 10:53:59 -08:00
target
trace mm: mmap: remove newline at the end of the trace 2023-03-23 17:18:36 -07:00
uapi Including fixes from netfilter, wifi and ipsec. 2023-03-17 13:31:16 -07:00
ufs SCSI misc on 20230303 2023-03-03 14:41:50 -08:00
vdso
video
xen xen: branch for v6.3-rc3 2023-03-17 10:45:49 -07:00