Re: Panic with no keyboard after update to main-n248404-60fb9e10c74c

From: David Wolfskill <>
Date: Sun, 1 Aug 2021 10:32:10 -0700
On Sun, Aug 01, 2021 at 05:03:32PM +0300, Konstantin Belousov wrote:
> On Sun, Aug 01, 2021 at 06:01:56AM -0700, David Wolfskill wrote:
> > Once I was able to complete the "make installworld" after updating
> > from main-n248391-f7f76c200a8c to main-n248404-60fb9e10c74c, the
> > subsequent reboot yielded a panic with the keyboard inoperable.
> > ... 
> It seems you block my home external ip address (or country?).

I apologize: I believe that's been remedied (recently).

> Your issue with the kernel.old is that nvidia.ko was rebuilt against newer
> kernel, so it cannot be loaded together with older kernel.

OK; effectively copying the modules from /boot/modules.old to
/boot/modules got past that.  (Should loader be loding modules from
/boot/modules (vs. /boot/modules.old) if it's booting kernel.old?)

> Anyway, please update past 1a55a3a729cd4424e17308d3 _and_ apply the following
> patch:
> diff --git a/sys/amd64/amd64/machdep.c b/sys/amd64/amd64/machdep.c
> index 8599dc2fa8f6..144b4a522bcc 100644
> --- a/sys/amd64/amd64/machdep.c
> +++ b/sys/amd64/amd64/machdep.c
> _at__at_ -1209,7 +1209,7 _at__at_ getmemsize(caddr_t kmdp, u_int64_t first)
>  	 * Tell the physical memory allocator about pages used to store
>  	 * the kernel and preloaded data.  See kmem_bootstrap_free().
>  	 */
> -	vm_phys_early_add_seg((vm_paddr_t)kernphys, trunc_page(first));
> +//	vm_phys_early_add_seg((vm_paddr_t)kernphys, trunc_page(first));
>  	bzero(physmap, sizeof(physmap));
>  	physmap_idx = 0;

OK; did that; rebuilt.  Subsequent reboot shows (copy/paste from serial
console, as this is from my headless build machine):

SMP: passed TSC synchronization test
TSC timecounter discards lower 1 bit(s)
Timecounter "TSC-low" frequency 1795879156 Hz quality 1000
KTLS: Initialized 8 threads
panic: vm_phys_free_pages: page 0xfffffe00000f4fe8 has unexpected order 0
cpuid = 0
time = 1
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xffffffff82b2ead0
vpanic() at vpanic+0x187/frame 0xffffffff82b2eb30
panic() at panic+0x43/frame 0xffffffff82b2eb90
vm_phys_free_pages() at vm_phys_free_pages+0x27d/frame 0xffffffff82b2ebd0
kmem_bootstrap_free() at kmem_bootstrap_free+0xfe/frame 0xffffffff82b2ec20
preload_delete_name() at preload_delete_name+0x70/frame 0xffffffff82b2ec40
ucode_release() at ucode_release+0x8a/frame 0xffffffff82b2ec60
mi_startup() at mi_startup+0x1f0/frame 0xffffffff82b2ecb0
btext() at btext+0x22
KDB: enter: panic
[ thread pid 0 tid 100000 ]
Stopped at      kdb_enter+0x37: movq    $0,0x127af3e(%rip)

I can leave it as-is for a bit, and poke at it (given sufficient
clues), if that might be helpful.

David H. Wolfskill                    
Life is not intended to be a zero-sum game.

See for my public key.

Received on Sun Aug 01 2021 - 17:32:10 UTC

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