Messages in this thread | | | Date | Fri, 23 Sep 2022 09:53:46 +0200 | Subject | Re: [PATCH v3 6/6] freezer,sched: Rewrite core freezer logic | From | Christian Borntraeger <> |
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Am 23.09.22 um 09:21 schrieb Christian Borntraeger: > Peter, > > as a heads-up. This commit (bisected and verified) triggers a > regression in our KVM on s390x CI. The symptom is that a specific > testcase (start a guest with next kernel and a poky ramdisk, > then ssh via vsock into the guest and run the reboot command) now > takes much longer (300 instead of 20 seconds). From a first look > it seems that the sshd takes very long to end during shutdown > but I have not looked into that yet. > Any quick idea? > > Christian
the sshd seems to hang in virtio-serial (not vsock).
PID: 237 TASK: 81d1a100 CPU: 1 COMMAND: "sshd" LOWCORE INFO: -psw : 0x0404e00180000000 0x0000000131ceb136 -function : __list_add_valid at 131ceb136 -prefix : 0x00410000 -cpu timer: 0x7fffffd3ec4f33d4 -clock cmp: 0x2639f08006283e00 -general registers: 0x00000008dcea2dce 0x00000001387d44b8 0x0000000081d1a228 0x00000001387d44b8 0x00000001387d44b8 0x00000001387d44b8 0x00000001387d3800 0x00000001387d3700 0x0000000081d1a100 0x00000001387d44b8 0x00000001387d44b8 0x0000000081d1a228 0x0000000081d1a100 0x0000000081d1a100 0x0000000131608b32 0x00000380004b7aa8 -access registers: 0x000003ff 0x8fff5870 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 0000000000 -control registers: 0x00a0000014966a10 0x0000000133348007 0x00000000028c6140 000000000000000000 0x000000000000ffff 0x00000000028c6140 0x0000000033000000 0x0000000081f001c7 0x0000000000008000 000000000000000000 000000000000000000 000000000000000000 000000000000000000 0x0000000133348007 0x00000000db000000 0x00000000028c6000 -floating point registers: 0x000003ffb82a9761 0x0000006400000000 0x000003ffb82a345c 000000000000000000 0x0000000000007fff 0x000003ffe22fe000 000000000000000000 0x000003ffe22fa51c 0x000003ffb81889c0 000000000000000000 0x000002aa3ce2b470 000000000000000000 000000000000000000 000000000000000000 000000000000000000 000000000000000000
#0 [380004b7b00] pick_next_task at 1315f2088 #1 [380004b7b98] __schedule at 13215e954 #2 [380004b7c08] schedule at 13215eeea #3 [380004b7c38] wait_port_writable at 3ff80149b2e [virtio_console] #4 [380004b7cc0] port_fops_write at 3ff8014a282 [virtio_console] #5 [380004b7d40] vfs_write at 131889e3c #6 [380004b7e00] ksys_write at 13188a2e8 #7 [380004b7e50] __do_syscall at 13215761c #8 [380004b7e98] system_call at 132166332 PSW: 0705000180000000 000003ff8f8f3a2a (user space) GPRS: 0000000000000015 000003ff00000000 ffffffffffffffda 000002aa02fc68a0 0000000000000015 0000000000000015 0000000000000000 000002aa02fc68a0 0000000000000004 000003ff8f8f3a08 0000000000000015 0000000000000000 000003ff8ffa9f58 0000000000000000 000002aa02365b20 000003ffdf4798d0
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