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Date:      Thu, 5 Sep 2019 21:40:17 +0200
From:      Piotr Kubaj <pkubaj@anongoth.pl>
To:        freebsd-net@freebsd.org
Subject:   panic: rcv_start < rcv_end
Message-ID:  <20190905194017.GA29827@KGPE-D16>

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Hello,

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

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

My kernel:
pkubaj@talos:$/usr/home/pkubaj$ cat /usr/src/sys/powerpc/conf/ZFS
include GENERIC64
options GEOM_ELI
options ZFS

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