Date: Sat, 30 Dec 2023 10:25:46 -0800 From: Kevin Oberman <rkoberman@gmail.com> To: FreeBSD Wireless <freebsd-wireless@freebsd.org> Subject: Re: Interaction between iwlwifi and drm-515-kmod lkpi? Message-ID: <CAN6yY1udT_uJsEE5kGrvo_Bu3F863Po2HYxH8OhO2j=KRDCgsw@mail.gmail.com> In-Reply-To: <CAN6yY1uTFBe8m5ncDVg4QViT0pE38qroSQ5DcvfjwwOZeitkgw@mail.gmail.com> References: <CAN6yY1uTFBe8m5ncDVg4QViT0pE38qroSQ5DcvfjwwOZeitkgw@mail.gmail.com>
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--000000000000fd1873060dbe472d Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Fri, Dec 22, 2023 at 9:33=E2=80=AFPM Kevin Oberman <rkoberman@gmail.com>= wrote: > After the ssh vulnerability was announced, I updated my kernel. After > completing the upgrade, it crashed when the system was booted. All stack > dumps showed lots of drm points on hte stack. So, I tried removing the > i915kms from the kld_list in rc.conf. The system booted and started the > wifi without crashing. When I loaded i915kms manually, the system froze. > > I still am wondering if there is some collision in the lkpi when the drm > driver on Alder Lake is present and the wifi starts. While I failed to ge= t > much saved during the multiple reboots, all showed the crash after > wpa_supplcant started. > > Is this remotely possible or just a coincidence? > > I have rolled my system back to 06c083f79dd7 (Dec. 2) just to get it > running with both graphics and wifi. > I have now booted several times with no graphics kmod loaded (i915kms). There have been no failures or panics while booting. One system freeze when loading i915kms. No state messages at all. iwlwifi0: WRT: Invalid buffer destination iwlwifi0: WFPM_UMAC_PD_NOTIFICATION: 0x20 iwlwifi0: WFPM_LMAC2_PD_NOTIFICATION: 0x1f iwlwifi0: WFPM_AUTH_KEY_0: 0x90 iwlwifi0: CNVI_SCU_SEQ_DATA_DW9: 0x0 iwlwifi0: RFIm is deactivated, reason =3D 4 wlan0: Ethernet address: 70:a8:d3:df:3c:de Created wlan(4) interfaces: wlan0. lo0: link state changed to UP Starting wpa_supplicant. Starting dhclient. wlan0: no link .... wlan0: link state changed to UP got link DHCPREQUEST on wlan0 to 255.255.255.255 port 67 DHCPACK from 192.168.1.1 unknown dhcp option value 0x7d bound to 192.168.1.5 -- renewal in 7200 seconds. Starting Network: lo0 em0 wlan0. I should also mention that, when I manually load i915kms, I do see many WITNESS reports. Do we still keep a list of known ones? --=20 Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkoberman@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683 --000000000000fd1873060dbe472d Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr"><div dir=3D"ltr"><div class=3D"gmail_default" style=3D"fon= t-family:tahoma,sans-serif;font-size:small">On Fri, Dec 22, 2023 at 9:33=E2= =80=AFPM Kevin Oberman <<a href=3D"mailto:rkoberman@gmail.com" target=3D= "_blank">rkoberman@gmail.com</a>> wrote:</div></div><div class=3D"gmail_= quote"><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;= border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr"><= div style=3D"font-family:tahoma,sans-serif;font-size:small">After the ssh v= ulnerability was announced, I updated my kernel. After completing the upgra= de, it crashed when the system was booted. All stack dumps showed lots of d= rm points on hte stack. So, I tried removing the i915kms from the kld_list = in rc.conf. The system booted and started the wifi without crashing. When I= loaded i915kms manually, the system froze.</div><div style=3D"font-family:= tahoma,sans-serif;font-size:small"><br></div><div style=3D"font-family:taho= ma,sans-serif;font-size:small">I still am wondering if there is some collis= ion in the lkpi when the drm driver on Alder Lake is present and the wifi s= tarts. While I failed to get much saved during the multiple reboots, all sh= owed the crash after wpa_supplcant started.=C2=A0</div><div style=3D"font-f= amily:tahoma,sans-serif;font-size:small"><br></div><div style=3D"font-famil= y:tahoma,sans-serif;font-size:small">Is this remotely possible or just a co= incidence?</div><div style=3D"font-family:tahoma,sans-serif;font-size:small= "><br></div><div style=3D"font-family:tahoma,sans-serif;font-size:small">I = have rolled my system back to 06c083f79dd7 (Dec. 2) just to get it running = with both graphics and wifi.<br></div></div></blockquote><div><br></div><di= v style=3D"font-family:tahoma,sans-serif;font-size:small" class=3D"gmail_de= fault">I have now booted several times with no graphics kmod loaded (i915km= s). There have been no failures or panics while booting. One system freeze = when loading i915kms. No state messages at all.</div><div style=3D"font-fam= ily:tahoma,sans-serif;font-size:small" class=3D"gmail_default">iwlwifi0: WR= T: Invalid buffer destination<br>iwlwifi0: WFPM_UMAC_PD_NOTIFICATION: 0x20<= br>iwlwifi0: WFPM_LMAC2_PD_NOTIFICATION: 0x1f<br>iwlwifi0: WFPM_AUTH_KEY_0:= 0x90<br>iwlwifi0: CNVI_SCU_SEQ_DATA_DW9: 0x0<br>iwlwifi0: RFIm is deactiva= ted, reason =3D 4<br>wlan0: Ethernet address: 70:a8:d3:df:3c:de<br>Created = wlan(4) interfaces: wlan0.<br>lo0: link state changed to UP<br>Starting wpa= _supplicant.<br>Starting dhclient.<br>wlan0: no link ....<br>wlan0: link st= ate changed to UP<br>=C2=A0got link<br>DHCPREQUEST on wlan0 to 255.255.255.= 255 port 67<br>DHCPACK from 192.168.1.1<br>unknown dhcp option value 0x7d<b= r>bound to 192.168.1.5 -- renewal in 7200 seconds.<br>Starting Network: lo0= em0 wlan0.</div><div style=3D"font-family:tahoma,sans-serif;font-size:smal= l" class=3D"gmail_default"><br></div><div style=3D"font-family:tahoma,sans-= serif;font-size:small" class=3D"gmail_default">I should also mention that, = when I manually load i915kms, I do see many WITNESS reports. Do we still ke= ep a list of known ones?<br></div></div><span class=3D"gmail_signature_pref= ix">-- </span><br><div dir=3D"ltr" class=3D"gmail_signature"><div dir=3D"lt= r"><div><div dir=3D"ltr"><div><div dir=3D"ltr"><div><div dir=3D"ltr">Kevin = Oberman, Part time kid herder and retired Network Engineer<br>E-mail: <a hr= ef=3D"mailto:rkoberman@gmail.com" target=3D"_blank">rkoberman@gmail.com</a>= <br></div><div>PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683</d= iv></div></div></div></div></div></div></div></div> --000000000000fd1873060dbe472d--
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