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Nils Goroll authored
I have checked the illumos source and there are some legit conditions when EPROTO is signalled for misbehaving tcp peers. panic seen in production: Assert error in VTCP_blocking(), vtcp.c line 225: Condition(VTCP_Check(j)) not true. version = varnish-trunk revision 3457dedc, vrt api = 6.1 ident = -jsolaris,-smalloc,-smalloc,-hcritbit,ports now = 39647514.473957 (mono), 1564367221.322315 (real) Backtrace: 4630c2: /usr/local/sbin/varnishd'pan_backtrace+0x30 [0x4630c2] 463535: /usr/local/sbin/varnishd'pan_ic+0x23a [0x463535] 4cefcb: /usr/local/sbin/varnishd'VTCP_blocking+0x5e [0x4cefcb] 48e789: /usr/local/sbin/varnishd'HTTP1_Session+0x150 [0x48e789] 48d6bd: /usr/local/sbin/varnishd'http1_req+0x12a [0x48d6bd] 482cbd: /usr/local/sbin/varnishd'Pool_Work_Thread+0x4e4 [0x482cbd] 481d4c: /usr/local/sbin/varnishd'WRK_Thread+0x2bf [0x481d4c] 482de4: /usr/local/sbin/varnishd'pool_thread+0x96 [0x482de4] fffffc7fef23e1ea: /lib/amd64/libc.so.1'_thrp_setup+0x8a [0xfffffc7fef23e1ea] fffffc7fef23e500: /lib/amd64/libc.so.1'_lwp_start+0x0 [0xfffffc7fef23e500] errno = 71 (Protocol error)
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