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The function at issue does not fully validate the content of the structure pointed by the log parameter, though its content has just been copied from userspace and lacks validation. Fix that. Moreover, change the type of n to unsigned long as that is the type returned by kvm_dirty_bitmap_bytes(). Signed-off-by: Tomas Bortoli <tomasbortoli@gmail.com> Reported-by: syzbot+028366e52c9ace67deb3@syzkaller.appspotmail.com [Squashed the fix from Paolo. - Radim.] Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> |
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