Date: Sun, 30 Nov 2025 10:24:49 -0800 From: Adrian Chadd <adrian@freebsd.org> To: =?UTF-8?B?S2FybG8gTWlsacSNZXZpxIc=?= <karlo98.m@gmail.com> Cc: freebsd-hackers@freebsd.org Subject: Re: 15.0-RELEASE boot panic when if_iwm_load="YES" Message-ID: <CAJ-VmokAWWesxdTZRS=H4K9xaQJA3mT98U7HsFrsw0ZiJwttew@mail.gmail.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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hi! The firmware loading migrated from "build all firmware as kernel modules' to 'support loading firmware as files'. However, that's resulted in a couple behavioural changes: * there's a known bug in the firmware loader where if it's invoked by a driver before / is available, the kernel panics. * .. and yes, since they're files now, but drivers have no way of waiting cleanly until the filesystems are available, things go sideways. Just add this to /etc/rc.conf : kld_list="if_iwm" (if you have an existnig kld_list line in there, add if_iwm to it instead) Then run "fwget" to fetch the latest firmware needed, and then reboot. -a On Sat, 29 Nov 2025 at 08:01, Karlo Miličević <karlo98.m@gmail.com> 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.
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