Date: Mon, 12 Feb 2024 14:34:06 -0500 From: Michael Butler <imb@protected-networks.net> To: John Baldwin <jhb@FreeBSD.org>, Mark Millard <marklmi@yahoo.com>, FreeBSD ARM List <freebsd-arm@freebsd.org>, Current FreeBSD <freebsd-current@freebsd.org> Cc: Warner Losh <imp@bsdimp.com>, Bakul Shah <bakul@iitbombay.org> Subject: Re: Recent commits reject RPi4B booting: pcib0 vs. pcib1 "rman_manage_region: <pcib1 memory window> request" leads to panic Message-ID: <7fecae82-636d-4907-999a-e672d138b237@protected-networks.net> In-Reply-To: <0b289f85-152b-45b2-a81e-ff34e398c964@protected-networks.net> References: <76AB969F-5BC5-4116-8AF4-3ED2CABEBBA5.ref@yahoo.com> <76AB969F-5BC5-4116-8AF4-3ED2CABEBBA5@yahoo.com> <2FE8FA48-180B-4F0D-BCD8-F7F33053B0F7@iitbombay.org> <986D2CD6-6241-4EBE-8BD2-9821AB693BA7@yahoo.com> <b0416b04-68a1-4aa5-9e9c-4d8a82279ac8@protected-networks.net> <b060f465-57ef-47cf-9a4f-30f6f39fbf62@FreeBSD.org> <0b289f85-152b-45b2-a81e-ff34e398c964@protected-networks.net>
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On 2/12/24 13:44, Michael Butler wrote:
> On 2/12/24 12:36, John Baldwin wrote:
>
> [ .. trimmed .. ]
>
>> Short of a stack trace, you can at least use lldb or gdb to lookup
>> the source line associated with the faulting instruction pointer (as
>> long as it isn't in a kernel module), e.g. for gdb you would use 'gdb
>> /boot/kernel/kernel' and then 'l *<instruction pointer address>',
>> e.g. from above: 'l *0xffffffff80acb962'
>
> I still didn't manage to get a core but .. does this make any sense in
> htis context?
I apologize .. too many crashes and I grabbed the wrong instruction
pointer; this was the most recent attempt. I have no idea why this
networking code and PCI configurations are seemingly related :-(
(kgdb) l *0xffffffff80acbc02
0xffffffff80acbc02 is in cc_cong_signal
(/usr/src/sys/netinet/tcp_input.c:465).
460 tp->t_flags &= ~TF_PREVVALID;
461 tp->t_badrxtwin = 0;
462 break;
463 }
464
465 if (CC_ALGO(tp)->cong_signal != NULL) {
466 if (th != NULL)
467 tp->t_ccv.curack = th->th_ack;
468 CC_ALGO(tp)->cong_signal(&tp->t_ccv, type);
469 }
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