Hi Juergen,
Looks like we've hit the first Xen crash with core scheduling patches applied.
The log is below. From my analysis it seems that CSCHED_PCPU is NULL.
I suspect this is connected to commit b0000b128adb
("sched: populate cpupool0 only after all cpus are up")
Could you take a look, please?
(XEN) [ 164.775206] Brought up 448 CPUs
(XEN) [ 164.827979] Testing NMI watchdog on all CPUs: ok
(XEN) [ 168.064678] ----[ Xen-4.13.0-8.0.12-d x86_64 debug=y Not tainted
]----
(XEN) [ 168.128822] CPU: 79
(XEN) [ 168.191394] RIP: e008:[<ffff82d0802467dc>] set_timer+0x39/0x1f7
(XEN) [ 168.255921] RFLAGS: 0000000000010002 CONTEXT: hypervisor
(XEN) [ 168.319752] rax: 0000000000000048 rbx: 0000000000000020 rcx:
ffff82d0805b8008
(XEN) [ 168.382563] rdx: ffff8462efce7fff rsi: 0000002721c0ad80 rdi:
0000000000000020
(XEN) [ 168.445194] rbp: ffff8462efce7de0 rsp: ffff8462efce7da0 r8:
0000000000008eea
(XEN) [ 168.507630] r9: 0000000000000000 r10: 3333333333333333 r11:
0000000000000008
(XEN) [ 168.569849] r12: ffff82d080488f20 r13: 00000027216dad05 r14:
000000272167bef6
(XEN) [ 168.631879] r15: 0000000000000008 cr0: 000000008005003b cr4:
00000000003526e0
(XEN) [ 168.693743] cr3: 00000000a5a9d000 cr2: 0000000000000048
(XEN) [ 168.754868] fsb: 0000000000000000 gsb: 0000000000000000 gss:
0000000000000000
(XEN) [ 168.816304] ds: 0000 es: 0000 fs: 0000 gs: 0000 ss: 0000 cs:
e008
(XEN) [ 168.877390] Xen code around <ffff82d0802467dc> (set_timer+0x39/0x1f7):
(XEN) [ 168.938117] 48 8d 47 28 48 89 45 c0 <66> 44 8b 67 28 45 0f b7 e4 41
81 fc ff ff 00 00
(XEN) [ 169.015525] Xen stack trace from rsp=ffff8462efce7da0:
(XEN) [ 169.075579] 0000000000000048 0000000000000286 ffff8382cd650f08
000000000000004f
(XEN) [ 169.139205] ffff82d080488f20 00000027216dad05 000000272167bef6
0000000000000008
(XEN) [ 169.202660] ffff8462efce7e00 ffff82d08022c1f4 000000000000004f
ffff8382cd650e70
(XEN) [ 169.265928] ffff8462efce7e20 ffff82d080241dfe 000000272167bef6
ffff8382cd650f08
(XEN) [ 169.329022] ffff8462efce7ea0 ffff82d0802eda52 ffff8462000000ff
00000020802ae6a5
(XEN) [ 169.392015] ffff8462efce7e60 ffff82d0802ae7d1 ffff82d0805c0200
0000000000000000
(XEN) [ 169.455119] 0000000000000000 0000000000000000 0000000000002780
0000000000002780
(XEN) [ 169.518238] ffff82d0805bda80 000000000000004f ffff82d0805b7270
000000000000004f
(XEN) [ 169.581477] ffff8462efce7ef0 ffff82d08027939e 0000000000000000
0000004f000000c8
(XEN) [ 169.644501] ffff8382cd64a000 ffff8382cd64a000 ffff8382cd50ab30
000000000000004f
(XEN) [ 169.707365] 0000000000000000 0000000000000000 ffff8462efce7ec0
0000000000000000
(XEN) [ 169.770036] 0000000000000000 0000000000000000 0000000000000000
0000000000000000
(XEN) [ 169.832519] 0000000000000000 0000000000000000 0000000000000000
0000000000000000
(XEN) [ 169.894813] 0000000000000000 0000000000000000 0000000000000000
0000000000000000
(XEN) [ 169.956916] 0000000000000000 0000000000000000 0000000000000000
0000000000000000
(XEN) [ 170.018831] 0000000000000000 0000000000000000 0000000000000000
0000000000000000
(XEN) [ 170.080574] 0000000000000000 0000000000000000 0000000000000000
0000000000000000
(XEN) [ 170.142124] 0000e0100000004f ffff8382cd64a000 000000b24d08e000
00000000003526e0
(XEN) [ 170.203508] 0000000000000000 0000000000000000 0000060100000000
0000000000000000
(XEN) [ 170.264698] Xen call trace:
(XEN) [ 170.321356] [<ffff82d0802467dc>] set_timer+0x39/0x1f7
(XEN) [ 170.378154] [<ffff82d08022c1f4>]
sched_credit.c#csched_tick_resume+0x54/0x59
(XEN) [ 170.435049] [<ffff82d080241dfe>] sched_tick_resume+0x67/0x86
(XEN) [ 170.491383] [<ffff82d0802eda52>] mwait-idle.c#mwait_idle+0x32b/0x357
(XEN) [ 170.547579] [<ffff82d08027939e>] domain.c#idle_loop+0xa6/0xc2
(XEN) [ 170.603301]
(XEN) [ 170.657509] Running stub recovery selftests...
(XEN) [ 170.701789] Pagetable walk from 0000000000000048:
(XEN) [ 170.755603] traps.c:1564: GPF (0000): ffff82d0bffff041
[ffff82d0bffff041] -> ffff82d0803893f2
(XEN) [ 170.800367] L4[0x000] = 00000082cfb9c063 ffffffffffffffff
(XEN) [ 170.854150] traps.c:759: Trap 12: ffff82d0bffff040 [ffff82d0bffff040]
-> ffff82d0803893f2
(XEN) [ 170.900493] L3[0x000] = 00000082cfb9b063 ffffffffffffffff
(XEN) [ 170.954060] traps.c:1098: Trap 3: ffff82d0bffff041 [ffff82d0bffff041]
-> ffff82d0803893f2
(XEN) [ 170.998631] L2[0x000] = 00000082cfb9a063 ffffffffffffffff
(XEN) [ 171.058140] L1[0x000] = 0000000000000000 ffffffffffffffff
(XEN) [ 171.130737]
(XEN) [ 171.190190] ****************************************
(XEN) [ 171.254241] Panic on CPU 79:
(XEN) [ 171.315034] FATAL PAGE FAULT
(XEN) [ 171.375744] [error_code=0000]
(XEN) [ 171.436129] Faulting linear address: 0000000000000048
(XEN) [ 171.499198] ****************************************
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