Re: Kernel panic in ieee80211_chan2mode <- SIOCS80211 ioctl
Date: Tue, 08 Sep 2026 23:47:53 UTC
On Tue, 8 Sep 2026, Marcin Cieslak wrote: > This is amd64 current as of 067ae9850f05a27239c28ae5819e4016e997cff2 > > brcmfmac0@pci0:2:0:0: class=0x028000 rev=0x05 hdr=0x00 vendor=0x14e4 > device=0x43a3 subvendor=0x106b subdevice=0x0159 > > > (running the vibe coded driver as of > 9adbe774d3be91827d628fbd811daf63512acb6d) Generally I'd not support this but ask to report it to the vibe coding repo... Here's some ideas though. > #20 0xffffffff80e525f2 in ieee80211_setup_rates (ni=0x33443836, > ni@entry=0xfffffe00fa139000, rates=<optimized out>, Can you print ni details here on frame 20 and frame 19? > xrates=xrates@entry=0xfffffe00f8af19e7 "3", flags=-2048, flags@entry=1) > at /usr/src/sys/net80211/ieee80211_input.c:450 > vap = 0xfffff80001927000 > rs = <optimized out> > #21 0xffffffff80e63ca6 in ieee80211_sta_join ( > vap=vap@entry=0xfffff80025bdd000, chan=<optimized out>, too bad that got optimized out. > se=se@entry=0xfffffe00f8af19a8) > at /usr/src/sys/net80211/ieee80211_node.c:1006 > ni = 0xfffffe00fa139000 ni just got allocated > do_ht = <optimized out> > ic = <optimized out> > #22 0xffffffff80e576dc in setmlme_assoc_sta (vap=0xfffff80025bdd000, > mac=0xfffffe00f8af1962 "\324\001_h\323lower-deck", > ssid_len=<optimized out>, ssid=<optimized out>) > at /usr/src/sys/net80211/ieee80211_ioctl.c:1693 > ... > se_intval = 100, se_capinfo = 1057, se_chan = 0xfffffe00f9409a40, > ... Can you also print se_chan details here? My guess is that it is memory corruption with an overflowing rate set not caught properly but it also looks like the stack is corrupt. If you can reproduce this you could try (on a debug kernel): wlandebug -i wlan0 +11n +xrates and see what may get logged right before panic. Beware there is no kernel message buffer in the dump so the information needs to be gathered before the reset, e.g., from ddb. /bz -- For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect. Behold, I have told you before. [Mat. 24:24-25]