Date: Sun, 30 Nov 2025 12:18:30 +0000 From: "Dave Cottlehuber" <dch@skunkwerks.at> To: =?UTF-8?Q?Karlo_Mili=C4=8Devi=C4=87?= <karlo98.m@gmail.com> Cc: "FreeBSD Hackers" <freebsd-hackers@freebsd.org>, freebsd-wireless@freebsd.org Subject: Re: 15.0-RELEASE boot panic when if_iwm_load="YES" Message-ID: <b62cee3d-122f-4afb-bb6e-719f2cf4e5e0@app.fastmail.com> In-Reply-To: <CABcFG8-xFa0X86ai-EspQMSgPKv=pSWhvZMcyc_M2xfqrGcGcQ@mail.gmail.com> References: <CABcFG8-xFa0X86ai-EspQMSgPKv=pSWhvZMcyc_M2xfqrGcGcQ@mail.gmail.com>
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On Sat, 29 Nov 2025, at 16:00, Karlo Miličević wrote: > I know 15.0 is not released yet but the image is up and I wanted to try > it out on real hardware. > > After I put if_iwm_load="YES" in /boot/loader.conf it fails to boot. > After saying it's loading loader.conf and briefly flashing FreeBSD logo > I get a panic: > > panic: page fault > cpuid = 0 > time = 1 > KDB: stack backtrace: > #0 0xffffffff80bbe1ed at kdb_backtrace+0x5d > #1 0xffffffff80b71576 at vpanic+0x136 > #2 0xffffffff80b71433 at panic+0x43 > #3 0xffffffff81079f69 at trap_pfault+0x3c9 > #4 0xffffffff8104ff18 at calltrap+0x8 > #5 0xffffffff80c4f974 at namei+0xe4 > #6 0xffffffff80c768b2 at vn_open_cred+0x5b2 > #7 0xffffffff80bb9ef4 at loadimage+0x274 > #8 0xffffffff80bd4de2 at taskqueue_run_locked+0x182 > #9 0xffffffff80bd5fb2 at taskqueue_thread_loop+0xc2 > #10 0xffffffff80b2786b at fork_exit+0x7b > #11 0xffffffff81050f3e at fork_trampoline+0xe > Uptime: 1s > Automatic reboot in 15 seconds - press a key on the console to abort > > Am I doing something wrong? > IIRC this worked on 14.3 on the same hardware. Hi Karlo I can't speak for the panic, but these other tips may help. Make sure you've got the relevant firmware - boot with iw_iwm disabled (see below if devmatch attaches it automatically), and run `fwget`, it should do the right thing even if the driver isn't loaded: # fwget Needed firmware packages: 'wifi-firmware-mt76-kmod-mt792x ... The most recent versions of packages are already installed The 15.0-RELEASE tag is already in sources, and signed, so there's nothing release-specific we can do at this stage. You can try using the /latest/ FreeBSD ports tree (or via packages) and make sure your intel firmware bundle is updated. I don't know what hardware you have, but if it's supported by https://man.freebsd.org/iwlwifi then you can try that as an alternative, it's seen a lot of development during the last few months. It's probably more convenient to late-load via rc.conf: devmatch_blocklist="if_iwmn" kld_list="${kld_list} if_iwlwifi" This prevents the iwm driver being attached, and prefers the newer one instead. There is also https://man.freebsd.org/if_iwx with overlapping hardware support. In either case, thanks for testing, and consider logging a PR after checking https://wiki.freebsd.org/WiFi/Iwlwifi#testing & seeing if your issue is already reported in the meta-bug at https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=273620 There is a freebsd-wireless@freebsd.org list too. I believe both 16-CURRENT and 15-STABLE have some new bits too already, so that may be worth a try as a final resort. A+ Davehelp
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