Summary: | iwn driver kernel panic | ||||||
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Product: | Base System | Reporter: | Nathaniel Barragan <contact> | ||||
Component: | wireless | Assignee: | freebsd-wireless (Nobody) <wireless> | ||||
Status: | Open --- | ||||||
Severity: | Affects Only Me | CC: | bz, david, grahamperrin, gspurki | ||||
Priority: | --- | Keywords: | crash | ||||
Version: | CURRENT | ||||||
Hardware: | amd64 | ||||||
OS: | Any | ||||||
Bug Depends on: | |||||||
Bug Blocks: | 277512, 278175 | ||||||
Attachments: |
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Description
Nathaniel Barragan
2021-04-12 17:44:56 UTC
Created attachment 224058 [details]
Screenshot of backtrace
System Specs: Lenovo ThinkPad T61 with Intel PRO/Wireless 4965 AG Hmm... I use an iwn(4) NIC on my laptop, on which I track head (and stable/12 and (since it was branches) stable/13) daily, performing source-based updates in-place. And when clang/llvm gets rebuilt, it's running head solidly for quite a while.... I have no iwn-related panics at all in the last couple of years that I recall, and no panics recently. Most recent: FreeBSD g1-55.catwhisker.org 14.0-CURRENT FreeBSD 14.0-CURRENT #210 main-n246006-5e98cae661f3: Mon Apr 12 05:32:14 PDT 2021 root@g1-55.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY amd64 1400008 1400008 FreeBSD g1-55.catwhisker.org 13.0-STABLE FreeBSD 13.0-STABLE #205 stable/13-n245198-659d71186597: Mon Apr 12 05:53:14 PDT 2021 root@g1-55.catwhisker.org:/common/S3/obj/usr/src/amd64.amd64/sys/CANARY amd64 1300500 1300500 FreeBSD g1-55.catwhisker.org 12.2-STABLE FreeBSD 12.2-STABLE #1005 stable/12-n232956-5fb6cfadcd9: Mon Apr 12 03:35:30 PDT 2021 root@g1-55.catwhisker.org:/common/S1/obj/usr/src/amd64.amd64/sys/CANARY amd64 1202505 1202505 And: iwn0@pci0:3:0:0: class=0x028000 card=0x11218086 chip=0x422b8086 rev=0x35 hdr=0x00 vendor = 'Intel Corporation' device = 'Centrino Ultimate-N 6300' class = network g1-55(12.2-S)[10] ifconfig wlan0 wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 ether 3c:a9:f4:ba:87:c4 inet 172.17.1.55 netmask 0xffff0000 broadcast 172.17.255.255 groups: wlan ssid lmdhw-net channel 149 (5745 MHz 11a) bssid 04:18:d6:21:22:1f regdomain FCC country US authmode WPA2/802.11i privacy ON deftxkey UNDEF AES-CCM 2:128-bit AES-CCM 3:128-bit txpower 23 bmiss 10 mcastrate 6 mgmtrate 6 scanvalid 60 wme roaming MANUAL parent interface: iwn0 media: IEEE 802.11 Wireless Ethernet OFDM/36Mbps mode 11a status: associated nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> [while running stable/12] (In reply to david from comment #3) David is on 11a; try setting mod to 11a and forget about 11n and s if the problem goes away. I am also on 11a and I still have this issue. I went back to FreeBSD and installed it again. I have not moved over to CURRENT yet, but I can say with confidence that this does not happen on STABLE. (In reply to Nathaniel Barragan from comment #6) There is very little difference between stable and current (make sure your kernel has the same debug options enabled maybe; I can never remember if they are enabled by default on a stable branch in GENERIC as well). Should you move forward to CURRENT and try again let us know how it goes. (In reply to Bjoern A. Zeeb from comment #7) > … difference between stable and current (… debug options … I can > never remember if they are enabled by default on a stable branch in > GENERIC as well). … Key phrase, in main: # For full debugger support use (turn off in stable branch): Most recently (12th August) for amd64, a main view of the twelve options that are _not always_ needed: <https://github.com/freebsd/freebsd-src/blob/6a70a0c8bfa6fe8a2739527e5c822aec985e83e9/sys/amd64/conf/GENERIC#L96-L108> So, for example, in stable/13 for amd64 we see the two options, alone, that are _always_ needed: <https://github.com/freebsd/freebsd-src/blob/0ca1220443695c79849bf0807306d0864acbabb9/sys/amd64/conf/GENERIC#L92-L94> options KDB # Enable kernel debugger support. options KDB_TRACE # Print a stack trace for a panic. HTH Graham ============= Notes to self ============= After not easily finding a GitHub method to compare the same file in two branches, I took a hint from <https://stackoverflow.com/a/59315113/38108> for a web-based view of differences. Then, taking a hint from <https://juplo.de/compare-two-files-in-different-branches-with-git/>: git -C /usr/src diff remotes/origin/main:sys/amd64/conf/GENERIC remotes/origin/stable/13:sys/amd64/conf/GENERIC | less Context (my configuration): % git -C /usr/src config --get remote.origin.url https://github.com/grahamperrin/freebsd-src.git % git -C /usr/src config --get remote.upstream.url https://github.com/freebsd/freebsd-src.git % |