On 17 February 2010 11:14, Poul-Henning Kamp <[email protected]> wrote: > In message <[email protected]>, Paul > Wright writes: >>On 17 February 2010 10:57, Poul-Henning Kamp <[email protected]> wrote: > >>I have pulled the latest revision and can confirm that unlink("/") >>failed as expected. I ran it briefly and saw this panic: >> >>Child (28554) died signal=3D6 >>Child (28554) Panic message: Assert error in http_copyheader(), >>cache_http.c line 647: >> Condition(n < to->shd) not true. > > Sounds like you got too many headers from the backend, if so, > consider increasing the parameter 'http_headers'
I pulled r4574 with the new TCP_Assert() changes, I increased http_headers to 128 and it ran like a champ for 25 minutes. Then a client made a Range request resulting in a "Partial Content" response which produced the panic included below. I've boiled down the request to a simple curl command that consistently panics the child: curl -v -H "Range: bytes=0-1" -H "Cookie: foo" http://192.168.0.35/robots.txt (The cookie header ensures the request is passed through to the backend. Curl will respond with "Failure when receiving data from the peer".) I note that ticket #466 mentions that Varnish doesn't support Range requests and r3910 should stop such requests passing though - is this expected behaviour? Should I stop the backend from generating partial content responses? Or should there be a check for such requests and they should be piped instead of passed? Paul. Child (21350) died signal=6 Child (21350) Panic message: Assert error in http_copyheader(), cache_http.c line 647: Condition(n < to->shd) not true. thread = (cache-worker) ident = -smalloc,-hcritbit,poll Backtrace: 447b2b: /opt/sbin/varnishd'pan_backtrace+0x1b [0x447b2b] 447e35: /opt/sbin/varnishd'pan_ic+0x1c5 [0x447e35] 4407e1: /opt/sbin/varnishd'http_copyheader+0x1c1 [0x4407e1] 442401: /opt/sbin/varnishd'http_FilterFields+0xdc1 [0x442401] 429c9d: /opt/sbin/varnishd'cnt_fetch+0x11fd [0x429c9d] 42cf8a: /opt/sbin/varnishd'CNT_Session+0x78a [0x42cf8a] 44a83f: /opt/sbin/varnishd'wrk_do_cnt_sess+0x1bf [0x44a83f] 449db2: /opt/sbin/varnishd'wrk_thread_real+0x882 [0x449db2] 44a365: /opt/sbin/varnishd'wrk_thread+0x135 [0x44a365] fffffd7ff653acf5: /lib/amd64/libc.so.1'_thrp_setup+0x8d [0xfffffd7ff653acf5] sp = 1140e08 { fd = 77, id = 77, xid = 133352112, client = 66.235.125.136:38373, step = STP_FETCH, handling = pass, err_code = 206, err_reason = (null), restarts = 0, esis = 0 ws = 1140e78 { id = "sess", {s,f,r,e} = {1142400,+388,0,+65536}, }, http[req] = { ws = 1140e78[sess] "GET", "/robots.txt", "HTTP/1.1", "TE: deflate,gzip;q=0.3", "Connection: TE, close", "From: [email protected]", "Host: www.firebox.com", "Range: bytes=0-199999", "User-Agent: RedCarpet/1.4 (http://www.pronto.com/robots.html)", "Cookie: CFTOKEN=aeed9fb6cc27a0f7-8F680632-1517-0C84-6887BD4A85FF98A8; CFID=128110309", "Cookie2: $Version="1"", "X-Forwarded-For: 66.235.125.136", }, worker = fffffd7ff7813d30 { ws = fffffd7ff7813e78 { id = "wrk", {s,f,r,e} = {fffffd7ff7801c40,+528,0,+65536}, }, http[bereq] = { ws = fffffd7ff7813e78[wrk] "GET", "/robots.txt", "HTTP/1.1", "From: [email protected]", "Host: www.firebox.com", "Range: bytes=0-199999", "User-Agent: RedCarpet/1.4 (http://www.pronto.com/robots.html)", "Cookie: CFTOKEN=aeed9fb6cc27a0f7-8F680632-1517-0C84-6887BD4A85FF98A8; CFID=128110309", "Cookie2: $Version="1"", "X-Forwarded-For: 66.235.125.136", "X-Varnish: 133352112", }, http[beresp] = { ws = fffffd7ff7813e78[wrk] "HTTP/1.1", "206", "Partial Content", "Date: Wed, 17 Feb 2010 16:25:42 GMT", "Server: Apache", "Last-Modified: Fri, 11 Dec 2009 18:15:28 GMT", "ETag: "19c0073-de-47a77e88b9000"", "Accept-Ranges: bytes", "Content-Length: 222", "Content-Range: bytes 0-221/222", "Connection: close", "Content-Type: text/plain", }, }, vcl = { srcname = { "input", "Default", }, }, obj = 8c1d8a0 { xid = 133352112, ws = 8c1d8c0 { id = "obj", {s,f,r,e} = {8c1daa5,8c1daa5,0,+213}, }, http[obj] = { ws = 8c1d8c0[obj] "HTTP/1.1", "206", "Partial Content", "Date: Wed, 17 Feb 2010 16:25:42 GMT", "Server: Apache", "Last-Modified: Fri, 11 Dec 2009 18:15:28 GMT", "ETag: "19c0073-de-47a77e88b9000"", }, len = 0, store = { }, }, }, _______________________________________________ varnish-misc mailing list [email protected] http://projects.linpro.no/mailman/listinfo/varnish-misc
