On 16.10.23 09:11, Viresh Kumar wrote:
Using indirect pointers in an ioctl command argument means that the layout is architecture specific, in particular we can't use the same one from 32-bit compat tasks. The general recommendation is to have __u64 members and use u64_to_user_ptr() to access it from the kernel if we are unable to avoid the pointers altogether.Fixes: f8941e6c4c71 ("xen: privcmd: Add support for irqfd") Reported-by: Arnd Bergmann <[email protected]> Closes: https://lore.kernel.org/all/[email protected]/ Signed-off-by: Viresh Kumar <[email protected]>
Reviewed-by: Juergen Gross <[email protected]> Juergen
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