Hi Juergen, I've found another regression that happens only with sched-gran=core. CentOS 5.11 (PV, CPUs: 32; RAM: 6GB) kernel hangs during suspend attempt. The last kernel messages are:
CPU 1 offline: Remove Rx thread CPU 2 offline: Remove Rx thread Kernel: Linux localhost 2.6.18-398.el5xen #1 SMP Tue Sep 16 21:31:50 EDT 2014 x86_64 x86_64 x86_64 GNU/Linux xl top shows 100% CPU utilization for the hanged VM. And here's its state: (XEN) [ 1907.976356] *** Dumping CPU14 guest state (d1v0): *** (XEN) [ 1907.982558] ----[ Xen-4.13.0-8.0.6-d x86_64 debug=y Not tainted ]---- (XEN) [ 1907.990704] CPU: 14 (XEN) [ 1907.993901] RIP: e033:[<ffffffff80264a7b>] (XEN) [ 1907.999333] RFLAGS: 0000000000000286 EM: 1 CONTEXT: pv guest (d1v0) (XEN) [ 1908.007282] rax: 0000000000000001 rbx: ffffffff80522b80 rcx: 0000000000000000 (XEN) [ 1908.016203] rdx: ffffffff80522b90 rsi: 0000000000000079 rdi: ffffffff8052a980 (XEN) [ 1908.025121] rbp: ffffffff80522980 rsp: ffff88017106dcf8 r8: ffff88017106c000 (XEN) [ 1908.034040] r9: 0000000000000000 r10: 0000000000000000 r11: ffff880176fad8c0 (XEN) [ 1908.042962] r12: 0000000000000001 r13: 0000000000000000 r14: ffffffff80522980 (XEN) [ 1908.051881] r15: 0000000000000003 cr0: 000000008005003b cr4: 0000000000142660 (XEN) [ 1908.060800] cr3: 000000801d8c0000 cr2: 00002b5400970000 (XEN) [ 1908.067393] fsb: 0000000000000000 gsb: ffffffff80639000 gss: 0000000000000000 (XEN) [ 1908.076311] ds: 0000 es: 0000 fs: 0000 gs: 0000 ss: e02b cs: e033 (XEN) [ 1908.084650] Guest stack trace from rsp=ffff88017106dcf8: (XEN) [ 1908.091147] ffffffff802c3dd4 0000000001168460 ffffffff80522b90 0000000000000079 (XEN) [ 1908.100164] ffffffff80522b80 ffffffff80522980 0000000000000001 0000000000000000 (XEN) [ 1908.109179] 0000000000000003 0000000000000003 ffffffff802c4041 ffff88017d68b040 (XEN) [ 1908.118197] 0000000000000003 0000000000000003 0000000000000007 0000000000000003 (XEN) [ 1908.127213] 00000000ffffffea ffffffff8029f0ad ffffffff802c4092 ffffffff8050ff90 (XEN) [ 1908.136229] ffffffff80268111 0000000000000003 0000000000000000 ffff88017d68b040 (XEN) [ 1908.145245] ffffffff802a408b 0000000000000000 ffff8800011d3860 fffffffffffffff7 (XEN) [ 1908.154263] ffffffffffffffff ffffffffffffffff 7fffffffffffffff 0000000000000001 (XEN) [ 1908.163278] 0000000000000000 0000000000000000 0000000000000000 0000000000000000 (XEN) [ 1908.172296] 0000000000000003 0000000000000003 0000000000000000 ffff88017f5ebce0 (XEN) [ 1908.181312] 0000000000000000 ffff88017f5ebcd0 ffffffff803be1a6 0000000000000001 (XEN) [ 1908.190328] 0000000000000000 ffffffff803be9dd ffffffff803bea43 ffff88017106deb0 (XEN) [ 1908.199345] ffffffff80289495 0000000300000000 ffff88017f5ebce0 ffff88017f5ebce8 (XEN) [ 1908.208362] 0000000000000000 ffff88017f5ebcd0 ffffffff8029f0ad ffff88017106dee0 (XEN) [ 1908.217379] 0000000000000000 ffff88017f5ebce0 0000000000000000 ffff88017f5ebcd0 (XEN) [ 1908.226396] ffffffff8029f0ad 0000000000000000 ffffffff80233ee4 0000000000000000 (XEN) [ 1908.235413] ffff88017d8687f0 ffffffffffffffff ffffffffffffffff ffffffffffffffff (XEN) [ 1908.244427] 7fffffffffffffff ffffffffffffffff ffff8800011d3860 ffff88017f5ebcd0 (XEN) [ 1908.253444] ffff88017f5ebc78 ffff88017f5ce6c0 ffffffff80260b2c 0000000000000000 (XEN) [ 1908.262461] ffffffff8029f0ad ffff88017f5ebcd0 0000000000000000 ffff88017f5ce6c0 Thanks, Sergey _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel