Date: Tue, 5 Jan 2016 20:57:42 -0500 From: Shawn Webb <shawn.webb@hardenedbsd.org> To: freebsd-current@freebsd.org Subject: kernel panic by enabling net.inet.ip.random_id Message-ID: <20160106015742.GA8405@mutt-hardenedbsd>
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Hey All,
Here's a kernel panic I'm experiencing by enabling net.inet.ip.random_id
at boot.
I'm on latest HEAD on amd64 in bhyve. I'll soon-ish be testing on native
hardware with VIMAGE enabled.
=3D=3D=3D Begin Log =3D=3D=3D
Kernel page fault with the following non-sleepable locks held:
exclusive sleep mutex ip_id_mtx (ip_id_mtx) r =3D 0 (0xffffffff81c54830) lo=
cked @ /usr/src/sys/netinet/ip_id.c:227
stack backtrace:
#0 0xffffffff80a79620 at witness_debugger+0x70
#1 0xffffffff80a7a937 at witness_warn+0x3d7
#2 0xffffffff80e6b887 at trap_pfault+0x57
#3 0xffffffff80e6b15f at trap+0x4bf
#4 0xffffffff80e4af97 at calltrap+0x8
#5 0xffffffff80b6c41b at ip_output+0x16b
#6 0xffffffff80b68e82 at icmp_reflect+0x5b2
#7 0xffffffff80b6883f at icmp_error+0x46f
#8 0xffffffff80beeb12 at udp_input+0x982
#9 0xffffffff80b69d1d at ip_input+0x17d
#10 0xffffffff80b08ba1 at netisr_dispatch_src+0x81
#11 0xffffffff80afecce at ether_demux+0x15e
#12 0xffffffff80affa14 at ether_nh_input+0x344
#13 0xffffffff80b08ba1 at netisr_dispatch_src+0x81
#14 0xffffffff80afefcf at ether_input+0x4f
#15 0xffffffff8089a5c3 at vtnet_rxq_eof+0x823
#16 0xffffffff8089b2ce at vtnet_rx_vq_intr+0x4e
#17 0xffffffff809e9ba6 at intr_event_execute_handlers+0x96
Fatal trap 12: page fault while in kernel mode
cpuid =3D 6; apic id =3D 06
fault virtual address =3D 0x5bd
fault code =3D supervisor read data, page not present
instruction pointer =3D 0x20:0xffffffff80b5de9e
stack pointer =3D 0x28:0xfffffe02b8d483e0
frame pointer =3D 0x28:0xfffffe02b8d48410
code segment =3D base 0x0, limit 0xfffff, type 0x1b
=3D DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags =3D interrupt enabled, resume, IOPL =3D 0
current process =3D 12 (irq265: virtio_pci0)
[ thread pid 12 tid 100040 ]
Stopped at ip_fillid+0x8e: movzbl (%rax,%rcx,1),%esi
=3D=3D=3D End Log =3D=3D=3D
Thanks,
--=20
Shawn Webb
HardenedBSD
GPG Key ID: 0x6A84658F52456EEE
GPG Key Fingerprint: 2ABA B6BD EF6A F486 BE89 3D9E 6A84 658F 5245 6EEE
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