[Bug 285681] [Hyper-V] i386 panic during storvsc_xferbuf_prepare()

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=285681

--- Comment #1 from Dimitry Andric <dim@FreeBSD.org> ---
Oh duh, I see:

--- a/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c
+++ b/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c
@@ -1831,6 +1831,10 @@ storvsc_xferbuf_prepare(void *arg, bus_dma_segment_t
*segs, int nsegs, int error
 #if !defined(__aarch64__)
                if (nsegs > 1) {
                        if (i == 0) {
+                               for (i = 0; i < nsegs; i++)
+                                       printf("segs[%d]: ofs 0x%jx, len
%zu\n",
+                                           i, (uintmax_t)segs[i].ds_addr,
+                                           segs[i].ds_len);
                                KASSERT((segs[i].ds_addr & PAGE_MASK) +
                                    segs[i].ds_len == PAGE_SIZE,
                                    ("invalid 1st page, ofs 0x%jx, len %zu",

The inner for loop increases 'i' to nsegs, while it was supposed to be zero.
The inner loop should use another variable, obviously.

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