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commit5c4e79e29aupstream. The interface specifies the symnum field as an input and output; the hypervisor sets it to the next sequential symbol's index. xensyms_next() incrementing the position explicitly (and xensyms_next_sym() decrementing it to "rewind") is only correct as long as the sequence of symbol indexes is non-sparse. Use the hypervisor-supplied value instead to update the position in xensyms_next(), and use the saved incoming index in xensyms_next_sym(). Cc: stable@kernel.org Fixes:a11f4f0a4e("xen: xensyms support") Signed-off-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Juergen Gross <jgross@suse.com> Message-ID: <15d5e7fa-ec5d-422f-9319-d28bed916349@suse.com> Signed-off-by: Juergen Gross <jgross@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>