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Date:      Wed, 08 May 2024 20:40:50 +0000
From:      bugzilla-noreply@freebsd.org
To:        net@FreeBSD.org
Subject:   [Bug 276294] net/mpd5: crashes host when configured with PPPoE
Message-ID:  <bug-276294-7501-pKPKARg1sZ@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-276294-7501@https.bugs.freebsd.org/bugzilla/>
References:  <bug-276294-7501@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D276294

--- Comment #3 from O. Hartmann <ohartmann@walstatt.org> ---
As of today, the appliance has

FreeBSD 14.1-STABLE #2 stable/14-n267607-7e10c2d27a53: Sat May  4 08:33:15 =
CEST
2024 amd64

The router/FW was up a couple of days/weeks for now. We stopped triggering a
restart of mpd5 via cron every night (to force ISP assigning new IPv4/IPv6 =
at a
time it is uncritical for the connection, otherwise the iterruption is
performed within business times).

I observe that the longer the router/fw runs, the higher the likelyhood that
the crash appears after the first "service mpd5 restart" performed after bo=
ot.

Immediately after boot it takes a couple of attempts to trigger the crash.

------

root@gate:~ # service mpd5 restart
Stopping mpd5.
Waiting for PIDS: 1076.
Starting mpd5.
root@gate:~ #

Fatal trap 12: page fault while in kernel mode
cpuid =3D 0; apic id =3D 00
fault virtual address   =3D 0x10
fault code              =3D supervisor read data, page not present
instruction pointer     =3D 0x20:0xffffffff8097d23a
stack pointer           =3D 0x28:0xfffffe00842afaa0
frame pointer           =3D 0x28:0xfffffe00842afbd0
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, resu=
me,
IOPL =3D 0
                        current process         =3D 1581 (isc-net-0005)
                        rdi: fffff80021ebb000 rsi: 000000000000001c rdx:
0000000000000010
                        rcx: 00000000ffffffff  r8: 00000000000000fd  r9:
000000007ac356fd
                        rax: 0000000000000000 rbx: fffff80021ebb000 rbp:
fffffe00842afbd0
                        r10: fffff80007e12698 r11: fffff800027dc4f0 r12:
fffffe00842afaa8
                        r13: fffff80002831480 r14: fffffe00842afb70 r15:
fffffe00842afb70
                        trap number             =3D 12
                        panic: page fault
                        cpuid =3D 0
                        time =3D 1715199106
                        Uptime: 4d13h8m24s
                        Automatic reboot in 15 seconds - press a key on the
console to abort

--=20
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