lockup when C1E and high-resolution timers enabled

Christoph Fritz
2015-06-13T19:54:09Z

Hi,

on following computer configuration, I do get hard lockup under heavy
IO-Load (using rsync):

- CONFIG_HIGH_RES_TIMERS=y
- CPU: AMD FX(tm)-8350 Eight-Core Processor (family 0x15 model 0x2)
- Motherboard: 'GA-970A-UD3P (rev. 1.0)' AMD 970/SB950
- BIOS: C1E enabled (on 'GA-970A-UD3P' there is no disable option)
- Kernels: 4.1.0-rc6, 4.0.x, 3.16.x

Tests:
- add kernel parameter "idle=halt" -> system runs fine
- disable CONFIG_HIGH_RES_TIMERS -> system runs fine
- change motherboard and disable C1E -> system runs fine
- change CPU to AMD Phenom II X6 Processor -> system runs fine

$ cat /sys/devices/system/cpu/modalias
cpu:type:x86,ven0002fam0015mod0002:
feature:,0000,0001,0002,0003,0004,0005,0006,0007,0008,0009,000B,000C,
000D,000E,000F,0010,0011,0013,0017,0018,0019,001A,001C,0020,0021,0022,
0023,0024,0025,0026,0027,0028,0029,002B,002C,002D,002E,002F,0030,0031,
0034,0036,0037,0038,0039,003A,003B,003D,0064,0068,006E,0070,0071,0074,
0075,0078,007A,007C,0080,0081,0083,0089,008C,008D,0093,0094,0097,0099,
009A,009B,009C,009D,00C0,00C1,00C2,00C3,00C4,00C5,00C6,00C7,00C8,00C9,
00CA,00CB,00CC,00CD,00CF,00D0,00D1,00D3,00D5,00D6,00D7,00D8,00E1,00E2,
00E8,0105,0106,0107,0108,0109,010A,010B,010C,010D,010E,010F,0123

$ cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 21
model : 2
model name : AMD FX(tm)-8350 Eight-Core Processor
stepping : 0
microcode : 0x6000832
cpu MHz : 1400.000
cache size : 2048 KB
physical id : 0
siblings : 8
core id : 0
cpu cores : 4
apicid : 16
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge
mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext
fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc
extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1
sse4_2 popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic
cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt
lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb arat cpb
hw_pstate npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid
decodeassists pausefilter pfthreshold vmmcall bmi1
bugs : fxsave_leak sysret_ss_attrs
bogomips : 8036.70
TLB size : 1536 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm 100mhzsteps hwpstate cpb eff_freq_ro
<snip>

Any ideas?

Thanks
-- Christoph