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Date:      Fri, 11 Nov 2022 01:22:59 +0000
From:      bugzilla-noreply@freebsd.org
To:        ports-bugs@FreeBSD.org
Subject:   [Bug 267704] net/realtek-re-kmod: frequent kernel panic
Message-ID:  <bug-267704-7788@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D267704

            Bug ID: 267704
           Summary: net/realtek-re-kmod: frequent kernel panic
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: ale@FreeBSD.org
          Reporter: henry.hu.sh@gmail.com
             Flags: maintainer-feedback?(ale@FreeBSD.org)
          Assignee: ale@FreeBSD.org

I'm getting non-deterministic kernel panic with this kmod.
I'm using FreeBSD 14-CURRENT (1400073):
FreeBSD goldpeak.local 14.0-CURRENT FreeBSD 14.0-CURRENT #3
main-n259127-689a9368eb60: Wed Nov  9 22:34:33 EST 2022=20=20=20=20
root@goldpeak.local:/usr/obj/usr/src/amd64.amd64/sys/MYKERNEL amd64

and I'm getting repeated kernel panic (~30m to 1h). It crashed more than 10
times today, when I was not at home and the machine was idle.

(kgdb) where
#0  __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:59
#1  dump_savectx () at /usr/src/sys/kern/kern_shutdown.c:405
#2  0xffffffff807a59d8 in dumpsys (di=3D0x0) at
/usr/src/sys/x86/include/dump.h:87
#3  doadump (textdump=3D1) at /usr/src/sys/kern/kern_shutdown.c:434
#4  kern_reboot (howto=3D260) at /usr/src/sys/kern/kern_shutdown.c:541
#5  0xffffffff807a5ef2 in vpanic (fmt=3D0xffffffff80bbdc7d "%s",
ap=3D0xfffffe014dd95a50) at /usr/src/sys/kern/kern_shutdown.c:979
#6  0xffffffff807a5cf3 in panic (fmt=3D<unavailable>) at
/usr/src/sys/kern/kern_shutdown.c:903
#7  0xffffffff80b63f9a in trap_fatal (frame=3D0xfffffe014dd95c80, eva=3D655=
43) at
/usr/src/sys/amd64/amd64/trap.c:955
#8  0xffffffff80b63fef in trap_pfault (frame=3Dframe@entry=3D0xfffffe014dd9=
5c80,
usermode=3Dfalse, signo=3Dsigno@entry=3D0x0, ucode=3Ducode@entry=3D0x0) at
/usr/src/sys/amd64/amd64/trap.c:763
#9  0xffffffff80b63672 in trap (frame=3Dframe@entry=3D0xfffffe014dd95c80) at
/usr/src/sys/amd64/amd64/trap.c:445
#10 0xffffffff80b64339 in trap_check (frame=3D0xfffffe014dd95c80) at
/usr/src/sys/amd64/amd64/trap.c:667
#11 <signal handler called>
#12 ether_input (ifp=3D<optimized out>, m=3D0xffff) at
/usr/src/sys/net/if_ethersubr.c:822
#13 0xffffffff85387ea2 in re_rxeof () from /boot/modules/if_re.ko
#14 0x0000000000000000 in ?? ()

The common thing seems to be that ether_input is always called with m =3D 0=
xffff.
I'm trying to figure out how to get debug info from the kernel module.

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