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Date:      Sun, 8 Sep 2019 14:17:56 +0200
From:      Michael Tuexen <tuexen@freebsd.org>
To:        Piotr Kubaj <pkubaj@anongoth.pl>
Cc:        freebsd-net@freebsd.org
Subject:   Re: panic: rcv_start < rcv_end
Message-ID:  <B1670196-4747-4F9B-8F95-E6D469CC3266@freebsd.org>
In-Reply-To: <20190905194017.GA29827@KGPE-D16>
References:  <20190905194017.GA29827@KGPE-D16>

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> On 5. Sep 2019, at 21:40, Piotr Kubaj via freebsd-net =
<freebsd-net@freebsd.org> wrote:
>=20
> Hello,
>=20
> today I had a panic on CURRENT/powerpc64. I guess running make fetch =
for one of ports had something to do with it:
> db> show panic
> panic: rcv_start < rcv_end
> db> bt
> Tracing pid 0 tid 100176 td 0xc000000006fa4560
> 0xe000000099ad2b30: at vpanic+0x1fc
> 0xe000000099ad2be0: at panic+0x44
> 0xe000000099ad2c10: at tcp_update_dsack_list+0x3e8
> 0xe000000099ad2ce0: at tcp_do_segment+0x2eb8
> 0xe000000099ad2e80: at tcp_input+0xec0
> 0xe000000099ad3060: at tcp6_input+0x1a8
> 0xe000000099ad30b0: at ip6_input+0x11d4
> 0xe000000099ad3210: at netisr_dispatch_src+0x108
> 0xe000000099ad32c0: at netisr_dispatch+0x24
> 0xe000000099ad32f0: at ether_demux+0x1b4
> 0xe000000099ad3370: at ether_gen_addr+0x660
> 0xe000000099ad3430: at netisr_dispatch_src+0x108
> 0xe000000099ad34e0: at netisr_dispatch+0x24
> 0xe000000099ad3510: at ether_ifattach+0x414
> 0xe000000099ad35b0: at if_input+0x28
> 0xe000000099ad35e0: at ata_sii_chipinit+0xe92c
> 0xe000000099ad3690: at ata_sii_chipinit+0xb8bc
> 0xe000000099ad3700: at taskqueue_run+0x200
> 0xe000000099ad37d0: at taskqueue_thread_loop+0xd4
> 0xe000000099ad3820: at fork_exit+0xc4
> 0xe000000099ad38c0: at fork_trampoline+0x18
> 0xe000000099ad38f0: at -0x4
>=20
> pkubaj@talos:$/usr/home/pkubaj$ uname -a
> FreeBSD talos 13.0-CURRENT FreeBSD 13.0-CURRENT #0 r351820M: Wed Sep  =
4 23:37:46 CEST 2019     =
root@talos:/usr/obj/usr/src/powerpc.powerpc64/sys/ZFS  powerpc
>=20
> My kernel:
> pkubaj@talos:$/usr/home/pkubaj$ cat /usr/src/sys/powerpc/conf/ZFS
> include GENERIC64
> options GEOM_ELI
> options ZFS
I'm aware of the issue, I can reproduce it locally. Working on a fix.

Best regards
Michael




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