Mailing List Archive

#1846: varnishlog assert in vslc_vtx_next
------------------------+--------------------
Reporter: felipewd | Type: defect
Status: new | Priority: normal
Milestone: | Component: build
Version: 4.1.0 | Severity: normal
Keywords: varnishlog |
------------------------+--------------------
When using varnish with 20k/sec requests and a small log, varnishlog
crashes after a few minutes.

{{{
(gdb) bt
#0 0x00007ffff6c77f97 in raise () from /lib64/libc.so.6
#1 0x00007ffff6c79bfa in abort () from /lib64/libc.so.6
#2 0x00007ffff79ace0c in VAS_Fail_default (func=0x7ffff79cc577
<__func__.4093> "vslc_vtx_next", file=0x7ffff79cbbaa "vsl_dispatch.c",
line=285,
cond=0x7ffff79cbc78 "c->offset <= c->vtx->len", kind=VAS_ASSERT) at
../libvarnish/vas.c:69
#3 0x00007ffff79ba463 in vslc_vtx_next (cursor=0x60b738) at
vsl_dispatch.c:285
#4 0x00007ffff79b8ddb in VSL_Next (cursor=0x60b738) at vsl_cursor.c:479
#5 0x00007ffff79c193d in VSL_PrintTransactions (vsl=0x60a030,
pt=0x7fffffffdfd0, fo=0x7ffff7007740 <_IO_2_1_stdout_>) at vsl.c:382
#6 0x000000000040253c in vut_dispatch (vsl=0x60a030,
trans=0x7fffffffdfd0, priv=0x0) at ../../lib/libvarnishtools/vut.c:99
#7 0x00007ffff79bd84d in vslq_callback (vslq=0x60a200, vtx=0x0,
func=0x4024ca <vut_dispatch>, priv=0x0) at vsl_dispatch.c:980
#8 0x00007ffff79bebe4 in vslq_process_ready (vslq=0x60a200, func=0x4024ca
<vut_dispatch>, priv=0x0) at vsl_dispatch.c:1302
#9 0x00007ffff79befa8 in VSLQ_Dispatch (vslq=0x60a200, func=0x4024ca
<vut_dispatch>, priv=0x0) at vsl_dispatch.c:1368
#10 0x00000000004035d0 in VUT_Main () at
../../lib/libvarnishtools/vut.c:386
#11 0x0000000000402451 in main (argc=1, argv=0x7fffffffe2b8) at
varnishlog.c:173
(gdb) f 3
#3 0x00007ffff79ba463 in vslc_vtx_next (cursor=0x60b738) at
vsl_dispatch.c:285
285 in vsl_dispatch.c
(gdb) p c->offset
$5 = 6951
(gdb) p c->vtx->len
$7 = 650
}}}

The full backtrace is:

{{{
(gdb) bt full
#0 0x00007ffff6c77f97 in raise () from /lib64/libc.so.6
No symbol table info available.
#1 0x00007ffff6c79bfa in abort () from /lib64/libc.so.6
No symbol table info available.
#2 0x00007ffff79ace0c in VAS_Fail_default (func=0x7ffff79cc577
<__func__.4093> "vslc_vtx_next", file=0x7ffff79cbbaa "vsl_dispatch.c",
line=285,
cond=0x7ffff79cbc78 "c->offset <= c->vtx->len", kind=VAS_ASSERT) at
../libvarnish/vas.c:69
err = 0
#3 0x00007ffff79ba463 in vslc_vtx_next (cursor=0x60b738) at
vsl_dispatch.c:285
c = 0x60b730
ptr = 0x20f653d564
__func__ = "vslc_vtx_next"
#4 0x00007ffff79b8ddb in VSL_Next (cursor=0x60b738) at vsl_cursor.c:479
tbl = 0x7ffff7bd4320 <vslc_vtx_tbl>
__func__ = "VSL_Next"
#5 0x00007ffff79c193d in VSL_PrintTransactions (vsl=0x60a030,
pt=0x7fffffffdfd0, fo=0x7ffff7007740 <_IO_2_1_stdout_>) at vsl.c:382
t = 0x7fffffffdff0
i = 0
delim = 1
verbose = 0
__func__ = "VSL_PrintTransactions"
#6 0x000000000040253c in vut_dispatch (vsl=0x60a030,
trans=0x7fffffffdfd0, priv=0x0) at ../../lib/libvarnishtools/vut.c:99
i = 0
__func__ = "vut_dispatch"
#7 0x00007ffff79bd84d in vslq_callback (vslq=0x60a200, vtx=0x0,
func=0x4024ca <vut_dispatch>, priv=0x0) at vsl_dispatch.c:980
n = 1
vtxs = 0x7fffffffe020
trans = 0x7fffffffdff0
ptrans = 0x7fffffffdfd0
i = 1
j = 1
__func__ = "vslq_callback"
#8 0x00007ffff79bebe4 in vslq_process_ready (vslq=0x60a200, func=0x4024ca
<vut_dispatch>, priv=0x0) at vsl_dispatch.c:1302
---Type <return> to continue, or q <return> to quit---
vtx = 0x60b590
i = 0
__func__ = "vslq_process_ready"
#9 0x00007ffff79befa8 in VSLQ_Dispatch (vslq=0x60a200, func=0x4024ca
<vut_dispatch>, priv=0x0) at vsl_dispatch.c:1368
i = 1
r = 0
now = 2847820.978886629
vtx = 0x60a310
__func__ = "VSLQ_Dispatch"
#10 0x00000000004035d0 in VUT_Main () at
../../lib/libvarnishtools/vut.c:386
c = 0x0
i = 1
__func__ = "VUT_Main"
#11 0x0000000000402451 in main (argc=1, argv=0x7fffffffe2b8) at
varnishlog.c:173
opt = -1
__func__ = "main"
}}}

--
Ticket URL: <https://www.varnish-cache.org/trac/ticket/1846>
Varnish <https://varnish-cache.org/>
The Varnish HTTP Accelerator

_______________________________________________
varnish-bugs mailing list
varnish-bugs@varnish-cache.org
https://www.varnish-cache.org/lists/mailman/listinfo/varnish-bugs