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...