[Bug 259458] iflib_rxeof NULL pointer crash with vmxnet3 driver

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 26 Oct 2021 14:48:07 UTC 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259458

--- Comment #5 from Andriy Gapon <avg@FreeBSD.org> ---
(kgdb) p $26.iri_frags[0]
$33 = {irf_flid = 0 '\000', irf_idx = 327, irf_len = 60}

(kgdb) fr 19
#19 0xffffffff8084d049 in iflib_rxd_pkt_get (rxq=0xfffffe00ea9f5000,
ri=<optimized out>) at /usr/src/sys/net/iflib.c:2737
2737    in /usr/src/sys/net/iflib.c
(kgdb) i loc
sd = {ifsd_cl = 0xfffff80002d61a38, ifsd_m = 0xfffff80002d62a38, ifsd_fl =
0xfffff80002d93400}
m = 0xfffff80123211c00
(kgdb) p sd.ifsd_cl[0]
$27 = (caddr_t) 0x0
(kgdb) p sd.ifsd_cl[1]
$28 = (caddr_t) 0xfffff8012322b800 "\377\377\377\377\377\377"
(kgdb) p sd.ifsd_cl[2]
$29 = (caddr_t) 0xfffff8012322a000 "\377\377\377\377\377\377"
(kgdb) p sd.ifsd_m[0]
$30 = (struct mbuf *) 0x0
(kgdb) p sd.ifsd_m[1]
$31 = (struct mbuf *) 0xfffff80123211b00
(kgdb) p sd.ifsd_m[2]
$32 = (struct mbuf *) 0xfffff80123211a00

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