cp2022 varnish backend crash: Clock step detected
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Authored by • ema on Apr 11 2018, 7:44 AM.

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	F16911422: cp2022 varnish backend crash: Clock step detected
	Apr 11 2018, 7:44 AM

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	Apr 11 02:11:57 cp2022 systemd[1]: Started varnish (Varnish HTTP Accelerator).
	Apr 10 23:11:06 cp2022 varnishd[1247]: Failed to kill child with PID 1443: Operation not permitted
	Apr 10 23:11:06 cp2022 varnishd[1247]: Unexpected reply from ping: 400 CLI communication error (hdr)
	Apr 10 23:11:06 cp2022 varnishd[1247]: Child (1443) died signal=6
	Apr 10 23:11:06 cp2022 varnishd[1247]: Child (1443) Panic at: Tue, 10 Apr 2018 23:11:06 GMT
	Wrong turn at cache/cache_session.c:547:
	Clock step detected
	version = varnish-5.1.3 revision NOGIT, vrt api = 6.0
	ident = Linux,4.9.0-0.bpo.6-amd64,x86_64,-junix,-sfile,-sfile,-sfile,-sfile,-sfile,-smalloc,-hcritbit,epoll
	now = 17991.540523 (mono), 1523401865.058863 (real)
	Backtrace:
	0x439665: /usr/sbin/varnishd() [0x439665]
	0x442624: /usr/sbin/varnishd(SES_Delete+0x194) [0x442624]
	0x47d3f8: /usr/sbin/varnishd() [0x47d3f8]
	0x7fa5f36be064: /lib/x86_64-linux-gnu/libpthread.so.0(+0x8064) [0x7fa5f36be064]
	0x7fa5f33f362d: /lib/x86_64-linux-gnu/libc.so.6(clone+0x6d) [0x7fa5f33f362d]
	thread = (cache-epoll)
	thr.req = (nil) {
	},
	thr.busyobj = (nil) {
	},
	Apr 10 23:11:06 cp2022 varnishd[1247]: Child cleanup complete

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