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authorColin Ian King <colin.king@canonical.com>2021-01-11 14:46:48 +0000
committerHans de Goede <hdegoede@redhat.com>2021-01-13 10:25:10 +0100
commitd26cbdd27f8c4ff2f3df227a8bc5782697ecce51 (patch)
tree8352fb176843fd6f5b3a6e23ab1aac7245c5ba10 /virt/kvm
parentd69cd7eea93eb59a93061beeb43e4f5e19afc4ea (diff)
downloadlinux-d26cbdd27f8c4ff2f3df227a8bc5782697ecce51.tar.bz2
platform/surface: fix potential integer overflow on shift of a int
The left shift of int 32 bit integer constant 1 is evaluated using 32 bit arithmetic and then passed as a 64 bit function argument. In the case where func is 32 or more this can lead to an oveflow. Avoid this by shifting using the BIT_ULL macro instead. Addresses-Coverity: ("Unintentional integer overflow") Fixes: fc00bc8ac1da ("platform/surface: Add Surface ACPI Notify driver") Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com> Link: https://lore.kernel.org/r/20210111144648.20498-1-colin.king@canonical.com Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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