[rrd-developers] segmentation fault with RRDs::graph in 1.2.18
Haroon Rafique
haroon.rafique at utoronto.ca
Sun Apr 8 00:20:02 CEST 2007
Hi,
I've been noticing a segmentation fault in RRDs::graph for quite some
time. Just haven't gotten around to tracking it down. I didn't try this
with v.1.2.19 since there are no functional changes in rrd_graph.c between
1.2.18 and 1.2.19.
In any case, I get a:
Program received signal SIGSEGV, Segmentation fault.
about 80% of the time. I don't think I'm doing anything unusual. The rest
of the site uses similar RRDs::graph invocations without any problems.
Regardless of the usage of RRDs::graph, I think rrd_graph should be
enhanced to take care of any problems by itself (and not segfault).
Here's my (gdb) bt full info:
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1218555776 (LWP 29527)]
0x007109cd in print_calc (im=0xbfff7490, prdata=0xbfff9154) at
rrd_graph.c:1376
1376 rrd_graph.c: No such file or directory.
in rrd_graph.c
(gdb) bt full
#0 0x007109cd in
print_calc (im=0xbfff7490, prdata=0xbfff9154) at
rrd_graph.c:1376
i = 94
ii = 181
validsteps = 1
printval = 87.000000000000028
tmvdef = {tm_sec = 0, tm_min = 0, tm_hour = 19, tm_mday = 31,
tm_mon = 11, tm_year = 69,
tm_wday = 3, tm_yday = 364, tm_isdst = 0, tm_gmtoff = -18000, tm_zone =
0x85ef860 "EST"}
graphelement = 1
vidx = 56
max_ii = 181
magfact = 1
si_symb = 0x743f53 " "
prlines = 1
now = 1175983474
#1 0x00713e27 in graph_paint (im=0xbfff7490, calcpr=0xfffff8b4) at
rrd_graph.c:2591
i = 7538217
ii = 4
lazy = 0
fo = (FILE *) 0x0
node = (gfx_node_t *) 0x0
areazero = 0
lastgdes = (graph_desc_t *) 0x0
#2 0x0071523e in rrd_graph (argc=115, argv=0x8d1bf28, prdata=0xbfff9154,
xsize=0xfffff8b4,
---Type <return> to continue, or q <return> to quit---
ysize=0xfffff8b4, stream=0xfffff8b4, ymin=0xfffff8b4, ymax=0xfffff8b4)
at rrd_graph.c:3049
filename = 0xbfff7490
"/backup/stats/www/htdocs/mrtg/images/rpc_stats/election-hour.png"
im = {
graphfile =
"/backup/stats/www/htdocs/mrtg/images/rpc_stats/election-hour.png", '\0'
<repeats 959 times>, graphhandle = 0x0, xsize = 500, ysize = 120,
graph_col = {4294967295, 4042322175, 3503345919, 2694881535,
2425393280, 3763359872, 255, 2149589247, 538976511, 255}, text_prop =
{{size = 8,
font =
"/usr/share/rrdtool/fonts/DejaVuSansMono-Roman.ttf\000\231\000\b`]\b¸úÄ\b8yÿ¿¬k\214\000\b`]\b\000\000\000Ëû\220\000hÔ\231\000PÃÄ\b\b`]\b«Ø\222\000hÔ\231\000\b`]\bHìÄ\bXyÿ¿lÀ\222\000\b`]\bð\002\000\000Ð\004Å\bhÔ\231\000hÔ\231\000hÔ\231\000èyÿ¿gk\215\000\b`]\b¸úÄ\b\000\002\000\000o\000\000\000\b`]\bt\003\000\000\035¶\217\000hÔ\231\000\b`]\bÔ\000\000\000\001\000\000\000h\001\000\000\b`]\b"...},
{size = 9,
font =
"/usr/share/rrdtool/fonts/DejaVuSansMono-Roman.ttf\000Ç\bl\001\000\000À\216È\bèÁÈ\bo::\000 \215È\bð¯È\b\f¶È\b\b`]\b«Ø\222\000hÔ\231\000\b`]\b\020¦È\bX}ÿ¿lÀ\222\000\b`]\b2\001\000\000Kj\215\000`wÏ\b\b`]\bhÔ\231,è}ÿ¿gk\215\000\b`]\bЦÈ\b\000\002\000\000-í\220\000\b`]\b ~¾\b\035¶\217\000hÔ\231\000\b`]\bV\001\000.¸}ÿ¿\000\000\000\000\b`]\bø\232Ç\bV\001\000\000"...},
{size = 7,
font =
"/usr/share/rrdtool/fonts/DejaVuSansMono-Roman.ttf\000Ò\b\001\000\000\000\004\000\000\000n\000\000\000\\wÏ\b\000\000\000\000´wÏ\bH\201ÿ¿lÀ\222\000\b`]\b\017\001\000\000Kj\215\000hÔ\231\000\b`]\bhÔ\231\000Ø\201ÿ¿gk\215\000\b`]\b\020rÈ\b\000\002\000\000-í\220\000\b`]\bÕ\000\000\000\035¶\217\000hÔ\231\000\b`]\b~\001\000\000¨\201ÿ¿\000\000\000\000\b`]\bø\232Ç\b~\001\000\000\f¶È\b(ÁÈ\b\235\000\000\000Ëû\220\000hÔ\231\000\f¶È\b"...},
{size = 8,
font =
"/usr/share/rrdtool/fonts/DejaVuSansMono-Roman.ttf\000\000\000«Ø\222\000hÔ\231\000\b`]\bÈ\000\000\000ø\207ÿ¿ôÉ\225\000\b`]\bÈ\000\000\000\232ÊÒ\b\000\000\000\000\000\000\000\000O\000\000\000é.Ë\b\000\000\000\000\b`]\b ãË\bO\000\000\000ÿÿ\000\000\b`]\bá\000\000\000\000\000\000\000hÔ\231\000¬·Ì\b\b`]\b«Ø\222\000hÔ\231\000\b`]\bÈRÌ\b¨\205ÿ¿lÀ\222\000\000\000\000\000twÏ\b\000\000\000\000\000\000\000\000\b`]\bhÔ\231\0008---Type
<return> to continue, or q <return> to quit---
\206ÿ¿"...}, {size = 8,
font =
"/usr/share/rrdtool/fonts/DejaVuSansMono-Roman.ttf\000ÿÿÈxÏ\b\000\000\000\000'\000\000\000öU\212\000\b`]\b\000\000\000\000x\211ÿ¿ìtÏ\bìtÏ\b",
'\0' <repeats 12 times>, "\030j]\b\fj]\b\000j]\b\000\000\000\000¨\002",
'\0' <repeats 19 times>,
"ÜÑ\b\000ÜÑ\bhÔ\231\000\nÜÑ\bÌ\206º\bX\214ÿ¿\024ì\225\000\b`]\bÌ\206º\b\035\000\000\000p\212ÿ¿\004yÏ\bP\213ÿ¿\000
\000\000\021³\217\000¸ùÊ\b¾B\227\000\020\000\000nÿÿ\000"...}},
ylegend = "Requests/Minute", '\0' <repeats 136 times>,
"FÚ\203Ï\b\000\000\000\000hÔ\231\000\b`]\b¨zº\bh\220ÿ¿DÃ\225\000\b`]\b¬zº\bØÛÑ\b\003\000\000\000\030j]\b\fj]\b\000j]\bD\005",
title = "RPC requests in Election section of SWS", '\0' <repeats 112
times>,
"\a\000\000*\237#\000\006\000\000\000xj$\000$\220ÿ¿\001\000\000\000 \216ÿ¿YX\032\000À\217ÿ¿ÀÇÿÿ$\220ÿ¿\220\216ÿ¿$\220ÿ¿\000\000\000\000\000\000\000",
watermark = "© Haroon Rafique 2003-2007. All rights reserved.
Unauthorised use prohibited.", '\0' <repeats 23 times>,
"\fj]\b\000j]\b\030", draw_x_grid = 1, draw_y_grid = 1, grid_dash_on = 1,
grid_dash_off = 1,
xlab_user = {minsec = -1, length = 147975208, gridtm = TMT_DAY, gridst =
140337160, mgridtm = 67,
mgridst = 9814387, labtm = 146438832, labst = 146438824, precis =
2386552, stst = 0x8ba869c ""},
xlab_form =
"\211\020\000:\200\217ÿ¿]¾\225\000hÔ\231\000H\206º\bØÛÑ\b\230\220ÿ¿«¤\225\000\b`]\bH\206º\bØÛÑ\b\004\000\000\000`s$\000xj$\000ì\210Ï\bè\204Ï\bÐ\217ÿ¿\2338\030\000`s$\000è\204Ï\b\000\000\000\000\000\000\000\000\001\000\000\000k\000\000\000\002\000\000\000\200P^·0øp\b·ß\220\000ø\030Ë\b{_i\b\035",
'\0' <repeats 11 times>,
"x\031q\b[ß\220\000hÔ\231\000\035\000\000\000{_i\b¨\220ÿ¿\206\f\217\000\b`]\b0øp\b{_i\b\035\000\000\000\000\000\000\000Y-\030\000`s$\000x\031q\bü\201@@`s$\000¨"...,
ygridstep = nan(0x8000000000000),
ylabfact = 2388832, tabwidth = 40, start = 1175972674, end = 1175983474,
step = 21, minval = 0,
maxval = nan(0x8000000000000), rigid = 0, ygrid_scale = {gridstep =
5.450938650301083e-306, labfact = 0,
labfmt =
"x\036Ï\b\f\000\000\000hÔ\231\000j\000\000\000\b`]\b\230\220ÿ¿sÁ\225\000\b`]\b¤zº\b`v$\000¨s$\000ø\001\000\000¸¾Ñ\b]¾\225\000hÔ\231\000\000\000\000"},
gridfit = 1, imginfo = 0x0, lazy = 1,
---Type <return> to continue, or q <return> to quit---
slopemode = 0, logarithmic = 0, xorigin = 0, yorigin = 0, ximg = 0, yimg
= 0,
magfact = 5.6880351816319198e-308, base = 1000, symbol = 32 ' ',
viewfactor = 1, unitsexponent = 9999,
unitslength = 6, extra_flags = 4, prt_c = 0, gdes_c = 95, gdes =
0xb7581008, canvas = 0x8d2e750}
#3 0x0027a0b5 in XS_RRDs_graph (my_perl=0x85d6008, cv=0x8b83adc) at
RRDs.xs:223
i = 0
xsize = 808465464
argv = (char **) 0x8d1bf28
calcpr = (char **) 0x0
ysize = 9625320
ymin = 1.2761791207913473e-266
ymax = 6.6911817000242767e-306
retar = (AV *) 0xbfff9160
sp = (SV **) 0x863a5bc
mark = (SV **) 0x8cf8910
ax = 2
#4 0x00906195 in Perl_pp_entersub (my_perl=0x85d6008) at pp_hot.c:2781
av = (AV *) 0x7
items = 2596736
markix = 1
sp = (SV **) 0x863a784
sv = (SV *) 0x8b83ac4
gv = (GV *) 0x7
stash = (HV *) 0x863a784
---Type <return> to continue, or q <return> to quit---
cv = (CV *) 0x8b83adc
cx = (PERL_CONTEXT *) 0x8ba4f88
gimme = 1
#5 0x008e990a in Perl_runops_debug (my_perl=0x85d6008) at dump.c:1414
No locals.
#6 0x0089da2b in S_run_body (my_perl=0x85d6008, oldscope=-1868) at
perl.c:1705
No locals.
#7 0x0089d6b5 in perl_run (my_perl=0x85d6008) at perl.c:1624
sp = (SV **) 0x2ade8
prev = (PERL_SI *) 0xbfff7490
oldscope = 1
ret = 175592
cur_env = {je_prev = 0x85d619c, je_buf = {{__jmpbuf = {10081384,
-1073769440, 2376508,
-1073769640, -1073769888, 9033130}, __mask_was_saved = 0,
__saved_mask = {__val = {3221197540,
8914124, 3076485120, 14886168, 576, 0, 210923230, 3221197616,
14886672, 1, 1, 0, 512, 8923852,
3076485120, 14886168, 299, 14886672, 3221197632, 14849039,
14887088, 1, 1, 9617364, 3221197656,
14848816, 14884896, 100, 10081384, 134527888, 35, 134515063}}}},
je_ret = 0,
je_mustcatch = 0 '\0'}
#8 0x08049413 in main ()
Let me know if there's anything else I can do to help.
Thanks,
--
Haroon Rafique
<haroon.rafique at utoronto.ca>
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