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Date:      Mon, 6 Oct 2025 13:52:28 +0200
From:      Michael Tuexen <tuexen@FreeBSD.org>
To:        Alexander Leidinger <Alexander@leidinger.net>
Cc:        Current@freebsd.org
Subject:   Re: Panic in the syncache area
Message-ID:  <550DE0C5-7589-4025-A769-643D221090B4@FreeBSD.org>
In-Reply-To: <199b91992c8.2805.fa4b1493b064008fe79f0f905b8e5741@Leidinger.net>
References:  <199b91992c8.2805.fa4b1493b064008fe79f0f905b8e5741@Leidinger.net>

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> On 6. Oct 2025, at 12:38, Alexander Leidinger =
<Alexander@leidinger.net> wrote:
>=20
> Hi,
>=20
> -current as of 2025-10-04-124314 CEST.
Hi Alexander,

is it possible that I get access to the system to look at the core?

Best regards
Michael
>=20
> The full backtrace is at https://wiki.leidinger.net/core.txt.1 . It =
reproduces after some minutes after boot.
>=20
> Short:
> #5  0xffffffff8089eac8 in trap_fatal (frame=3D0xfffffe0420436980,
>     eva=3D<optimized out>) at =
/space/system/usr_src/sys/amd64/amd64/trap.c:969
>         type =3D <optimized out>
>         handled =3D <optimized out>
> #6  <signal handler called>
> No locals.
> #7  memcmp () at /space/system/usr_src/sys/amd64/amd64/support.S:174
> No locals.
> #8  0xffffffff806ecd5e in syncache_lookup (inc=3D0xfffffe0420436b10,
>     schp=3D<optimized out>)
>     at /space/system/usr_src/sys/netinet/tcp_syncache.c:597
>         sch =3D 0xfffffe07a444f1d0
>         sc =3D 0xdeadc0dedeadc0de
> #9  syncache_chkrst (inc=3Dinc@entry=3D0xfffffe0420436b10,
>     th=3Dth@entry=3D0xfffff804fbbed782, m=3Dm@entry=3D0xfffff804fbbed700=
,
>     port=3Dport@entry=3D0) at =
/space/system/usr_src/sys/netinet/tcp_syncache.c:620
>         s =3D 0x0
>         sch =3D 0xfffffe07a444f1d0
>         sc =3D <optimized out>
> #10 0xffffffff806d3968 in tcp_input_with_port (mp=3D<optimized out>,
>     offp=3D<optimized out>, proto=3D<optimized out>, =
port=3Dport@entry=3D0)
>     at /space/system/usr_src/sys/netinet/tcp_input.c:1175
>         inc =3D {inc_flags =3D 0 '\000', inc_len =3D 0 '\000', =
inc_fibnum =3D 0,
>           inc_ie =3D {ie_fport =3D 41797, ie_lport =3D 47873, =
ie_dependfaddr =3D {
>               id46_addr =3D {ia46_pad32 =3D {0, 0, 0}, ia46_addr4 =3D =
{
>                   s_addr =3D 781893582}}, id6_addr =3D {__u6_addr =3D =
{
>                   __u6_addr8 =3D '\000' <repeats 12 times>, "=CE=BF\232.=
",
>                   __u6_addr16 =3D {0, 0, 0, 0, 0, 0, 49102, 11930},
>                   __u6_addr32 =3D {0, 0, 0, 781893582}}}}, =
ie_dependladdr =3D {
>               id46_addr =3D {ia46_pad32 =3D {0, 0, 0}, ia46_addr4 =3D =
{
>                   s_addr =3D 2013374656}}, id6_addr =3D {__u6_addr =3D =
{
>                   __u6_addr8 =3D '\000' <repeats 12 times>, =
"\300\250\001x",
>                   __u6_addr16 =3D {0, 0, 0, 0, 0, 0, 43200, 30721},
>                   __u6_addr32 =3D {0, 0, 0, 2013374656}}}}, ie6_zoneid =
=3D 0}}
>         so =3D 0xfffff8051652cc00
>         to =3D {to_flags =3D 0, to_tsval =3D 4294966788, to_tsecr =3D =
2152803556,
>           to_sacks =3D 0xfffff80525f06200 "",
>           to_signature =3D 0xfffff8010e37f000 "\300q\275e", =
to_tfo_cookie =3D 0x0,
>           to_mss =3D 46448, to_wscale =3D 116 't', to_nsacks =3D 217 =
'\331',
>           to_tfo_len =3D 4 '\004', to_spare =3D 541289232}
>         m =3D 0xfffff804fbbed700
>         th =3D 0xfffff804fbbed782
>         ip =3D 0xfffff804fbbed76e
>         inp =3D <optimized out>
>         tp =3D 0xfffff8064a381540
>         optp =3D 0x0
>         optlen =3D 0
>         tlen =3D <optimized out>
>         fwd_tag =3D 0x0
>         ip6 =3D 0x0
>         s =3D 0x0
>         closed_port =3D false
>         off0 =3D <optimized out>
>         iptos =3D 0 '\000'
>         off =3D <optimized out>
>         len =3D <optimized out>
>         ipttl =3D <optimized out>
>         thflags =3D <optimized out>
>         drop_hdrlen =3D 40
>         lookupflag =3D 5
>         isipv6 =3D <optimized out>
>=20
> Bye,
> Alexander.
>=20
> --=20
> Send from a mobile device, please forgive brevity and misspellings.




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