[Bug 259458] iflib_rxeof NULL pointer crash with vmxnet3 driver

From: <bugzilla-noreply_at_freebsd.org>
Date: Tue, 26 Oct 2021 13:17:35 UTC 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259458

--- Comment #1 from Andriy Gapon <avg@FreeBSD.org> ---
(kgdb) fr 19
#19 0xffffffff8084d049 in iflib_rxd_pkt_get (rxq=0xfffffe00ea9f5000,
ri=<optimized out>) at /usr/src/sys/net/iflib.c:2737
2737    /usr/src/sys/net/iflib.c: No such file or directory.

(kgdb) i loc
sd = {ifsd_cl = 0xfffff80002d61a38, ifsd_m = 0xfffff80002d62a38, ifsd_fl =
0xfffff80002d93400}
m = 0xfffff80123211c00

(kgdb) p m->m_data
$1 = (caddr_t) 0xfffff80123211c58 ""

(kgdb) p sd.ifsd_cl
$2 = (caddr_t *) 0xfffff80002d61a38
(kgdb) p *sd.ifsd_cl
$3 = (caddr_t) 0x0

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