On Wed, Jan 27, 2021 at 07:11:49AM +0100, alf wrote:
> Hello,
>
> while trying to upgrade one of our machines to 6.8 we experienced a
> repeatable crash while booting (bsd.rd + install went fine).
>
> The machine in question is a:
> ...
> hw.vendor=HP
> hw.product=ProLiant DL360 G7
> hw.serialno=CZ3451KJW6
> hw.uuid=36333337-3738-435a-3334-35314b4a5736
> hw.physmem=8562860032
> hw.usermem=8562847744
> hw.ncpufound=12
> hw.allowpowerdown=1
> hw.perfpolicy=manual
> hw.smt=0
> hw.ncpuonline=6
> ...
>
> Since this is a production machine we downgraded to 6.7 (upgrade from
> 6.6 which it was running before went flawlessly).
>
> Find below the dmesg of the 6.8 kernel, 6.8-current and finally the
> 6.7 kernel. For the 6.8* I also provided 'trace' and 'show registers'
> output.
>
> I hope this is enough info to get an idea of what was going on.
> I'll happily will provide additional info if needed.
>
> Alf
>
> [SNIP]
> ...
> radeondrm0: RV100
> NMI ... going to debugger
The machine did not panic, instead it received an NMI (non-maskable
interrupt), this could be a sign of hardware failure.
-Bryan.
> Stopped at tsc_delay+0x66: rdtsc
> ddb{0}> trace
> tsc_delay(1) at tsc_delay+0x66
> r100_ring_test(ffff8000001a5000,ffff8000001a6938) at r100_ring_test+0x228
> r100_cp_init(ffff8000001a5000,100000) at r100_cp_init+0x499
> r100_startup(ffff8000001a5000) at r100_startup+0x457
> r100_init(ffff8000001a5000) at r100_init+0x3f8
> radeon_device_init(ffff8000001a5000,ffff800000198800,ffff800000198850,840001)
> a
> t radeon_device_init+0x963
> radeondrm_attachhook(ffff8000001a5000) at radeondrm_attachhook+0x36
> config_process_deferred_mountroot() at config_process_deferred_mountroot+0x6b
> main(0) at main+0x733
> end trace frame: 0x0, count: -9
> ddb{0}> shw ow registers
> rdi 0x1
> rsi 0x45d5418924
> rbp 0xffffffff82520cd0 end+0x120cd0
> rbx 0xc8000400
> rdx 0x4500000000
> rcx 0xa6a
> rax 0x1fe
> r8 0x5
> r9 0x7f7fffffc000
> r10 0xda85623203c11f01
> r11 0xd6f674e06cf62a5b
> r12 0xcafedead
> r13 0xffff8000001a54c0
> r14 0xffff8000001a5000
> r15 0x1
> rip 0xffffffff81131ec6 tsc_delay+0x66
> cs 0x8
> rflags 0x283
> rsp 0xffffffff82520cc0 end+0x120cc0
> ss 0x10
> tsc_delay+0x66: rdtsc
> ddb{0}> re boot rebvoo oot
> rebooting...
