https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259019
Bug ID: 259019
Summary: kld_list="radeonkms" in /etc/rc.conf -> kernel panic
Product: Base System
Version: 13.0-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: b...@freebsd.org
Reporter: donaldcal...@gmail.com
Created attachment 228531
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=228531&action=edit
dmesg
In trying to run a newly installed copy of FreeBSD 13 on the machine described
in the attached dmesg, I need to load radeonkms kernel module in order to
obtain full resolution when running X. Following the man page for rc.conf,
which says:
kld_list (str) A whitespace-separated list of kernel modules to load
right after the local disks are mounted, without any .ko ex-
tension or path. Loading modules at this point in the boot
process is much faster than doing it via /boot/loader.conf
for those modules not necessary for mounting local disks.
Noting "without any .ko extension or path", I added the line
kld_list="radeonkms"
Prior to doing so, the system would boot normally and I could run 'startx' and
X would come up, but with VGA resolution. After adding the line above, the
system would crash while booting. I found the following in /var/log/messages:
Oct 8 11:03:09 giovanni kernel: Fatal trap 12: page fault while in kernel mode
Oct 8 11:03:09 giovanni kernel: cpuid = 3; apic id = 03
Oct 8 11:03:09 giovanni kernel: fault virtual address = 0x0
Oct 8 11:03:09 giovanni kernel: fault code = supervisor read data, page
not present
Oct 8 11:03:09 giovanni kernel: instruction pointer =
0x20:0xffffffff80853b62
Oct 8 11:03:09 giovanni kernel: stack pointer =
0x28:0xfffffe011604f4d0
Oct 8 11:03:09 giovanni kernel: frame pointer =
0x28:0xfffffe011604f500
Oct 8 11:03:09 giovanni kernel: code segment = base 0x0, limit 0xfffff,
type 0x1b
Oct 8 11:03:09 giovanni kernel: = DPL 0, pres 1, long 1, def32 0,
gran 1
Oct 8 11:03:09 giovanni kernel: processor eflags = interrupt enabled,
resume, IOPL = 0
Oct 8 11:03:09 giovanni kernel: current process = 70998 (kldload)
Oct 8 11:03:09 giovanni kernel: trap number = 12
Oct 8 11:03:09 giovanni kernel: panic: page fault
Oct 8 11:03:09 giovanni kernel: cpuid = 3
Oct 8 11:03:09 giovanni kernel: time = 1633705330
Oct 8 11:03:09 giovanni kernel: KDB: stack backtrace:
Oct 8 11:03:09 giovanni kernel: #0 0xffffffff80c57345 at kdb_backtrace+0x65
Oct 8 11:03:09 giovanni kernel: #1 0xffffffff80c09d21 at vpanic+0x181
Oct 8 11:03:09 giovanni kernel: #2 0xffffffff80c09b93 at panic+0x43
Oct 8 11:03:09 giovanni kernel: #3 0xffffffff8108b187 at trap_fatal+0x387
Oct 8 11:03:09 giovanni kernel: #4 0xffffffff8108b1df at trap_pfault+0x4f
Oct 8 11:03:09 giovanni kernel: #5 0xffffffff8108a83d at trap+0x27d
Oct 8 11:03:09 giovanni kernel: #6 0xffffffff810617a8 at calltrap+0x8
Oct 8 11:03:09 giovanni kernel: #7 0xffffffff82371f76 at
evergreen_fix_pci_max_read_req_size+0x176
Oct 8 11:03:09 giovanni kernel: #8 0xffffffff823795fc at
evergreen_startup+0x87c
Oct 8 11:03:09 giovanni kernel: #9 0xffffffff8237b7cc at evergreen_init+0x28c
Oct 8 11:03:09 giovanni kernel: #10 0xffffffff823d0980 at
radeon_device_init+0xde0
Oct 8 11:03:09 giovanni kernel: #11 0xffffffff823e1009 at
radeon_driver_load_kms+0x139
Oct 8 11:03:09 giovanni kernel: #12 0xffffffff824ae7b6 at
drm_dev_register+0xc6
Oct 8 11:03:09 giovanni kernel: #13 0xffffffff823d7830 at
radeon_pci_probe+0x230
Oct 8 11:03:09 giovanni kernel: #14 0xffffffff80e4301b at
linux_pci_attach_device+0x30b
Oct 8 11:03:09 giovanni kernel: #15 0xffffffff80c4653d at device_attach+0x3dd
Oct 8 11:03:09 giovanni kernel: #16 0xffffffff80c48196 at
bus_generic_driver_added+0xb6
Oct 8 11:03:09 giovanni kernel: ---<<BOOT>>---
Oddly, and contrary to what the man page says, changing the added line in
rc.conf to
kld_list="/boot/modules/radeonkms.ko"
allows the system to boot and the radeonkms driver is apparently loaded, as the
resolution in X is now correct.
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