[squid-users] Fw: [Bug 4977] stmem.cc:98: "lowestOffset () <= target_offset" assertion when adapting Content-Range value

[Matus UHLAR - fantomas]

>On 04.11.19 12:13, Alex Rousskov wrote:
>>That request does not seem to match the stack trace: The stack trace
>>points to a non-CONNECT transaction AFAICT.
>
>Oh, yes, may be caused by other GET request fetching from cache or storing
>to cache (doesn't happen wich cache disabled).
>
>>Perhaps you are bumping that
>>tunnel? Please note that you are not looking for the last request, but
>>for the request that triggered the assertion. It is very difficult to do
>>that with just ALL,2 and stripped executable, especially when you have
>>lots of concurrent transactions flying by.

On 04.11.19 18:59, Matus UHLAR - fantomas wrote:
>No bumping. I can create unstripped executable (great if it works with
>current core, but I may create new one).

I didn't know about debian archive for debug symbols. Now I have full
backtrace, hopefully:

(gdb) backtrace
#0  __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1  0x00007f93a15b2535 in __GI_abort () at abort.c:79
#2  0x00005654ebcee5ad in xassert (msg=msg at entry=0x5654ec133290 "lowestOffset () <= target_offset", file=file at entry=0x5654ec133043 "stmem.cc", line=line at entry=98) at debug.cc:618
#3  0x00005654ebe6c170 in mem_hdr::freeDataUpto (this=this at entry=0x5654f6c11988, target_offset=target_offset at entry=0) at stmem.cc:39
#4  0x00005654ebe27440 in MemObject::trimSwappable (this=0x5654f6c11950) at MemObject.cc:400
#5  0x00005654ebe74bf5 in StoreEntry::trimMemory (this=0x5654edd697b0, preserveSwappable=<optimized out>) at store.cc:1902
#6  0x00005654ec100a80 in Store::Controller::memoryOut (this=<optimized out>, e=..., preserveSwappable=<optimized out>) at Controller.cc:557
#7  0x00005654ebe84305 in StoreEntry::swapOut (this=0x5654edd697b0) at store_swapout.cc:185
#8  0x00005654ebe7b3fd in StoreEntry::invokeHandlers (this=this at entry=0x5654edd697b0) at store_client.cc:719
#9  0x00005654ebe736ac in StoreEntry::write (this=0x5654edd697b0, writeBuffer=...) at store.cc:836
#10 0x00005654ebf0a590 in Client::storeReplyBody (this=this at entry=0x5654f15e4d88,
    data=0x5654f5a21f70 "A\336{\t,8K\246\353\257=\"r\r\210\375u\254\061\016\301\001\t\255\265\206\030h\350`a\300Kd\002\222k\354\247\016 at 3m\211v\204\227rdL\030\006\026j\024\002XXM\240R)\343kƔ\017\222\261\367X\033\234:\204\242\315\032\205\020\032*Zm鲜\273\272\361\060\310j\276\217o\364m\377O\375\006&Ԏ", len=len at entry=1400) at ../../src/StoreIOBuffer.h:23
#11 0x00005654ebf0a5d3 in Client::addVirginReplyBody (this=this at entry=0x5654f15e4d88, data=<optimized out>, len=len at entry=1400) at Client.cc:1005
#12 0x00005654ebdeca37 in HttpStateData::writeReplyBody (this=0x5654f15e4d88) at http.cc:1359
#13 0x00005654ebdf1bd5 in HttpStateData::processReplyBody (this=0x5654f15e4d88) at http.cc:1424
#14 0x00005654ebdf382a in HttpStateData::processReply (this=0x5654f15e4d88) at http.cc:1251
#15 0x00005654ebdf4da8 in HttpStateData::readReply (this=0x5654f15e4d88, io=...) at http.cc:1223
#16 0x00005654ebdf8d6b in JobDialer<HttpStateData>::dial (this=0x5654f281c0f0, call=...) at base/AsyncJobCalls.h:169
#17 0x00005654ebf5be51 in AsyncCall::make (this=this at entry=0x5654f281c0c0) at AsyncCall.cc:40
#18 0x00005654ebf5d3a4 in AsyncCallQueue::fireNext (this=<optimized out>) at AsyncCallQueue.cc:56
#19 0x00005654ebf5d6e9 in AsyncCallQueue::fire (this=0x5654ed4cdc40) at AsyncCallQueue.cc:42
#20 0x00005654ebdb98ea in EventLoop::dispatchCalls (this=0x7ffcde3afba0) at EventLoop.cc:144
#21 EventLoop::runOnce (this=this at entry=0x7ffcde3afba0) at EventLoop.cc:121
#22 0x00005654ebdb99d8 in EventLoop::run (this=this at entry=0x7ffcde3afba0) at EventLoop.cc:83
#23 0x00005654ebe22ab9 in SquidMain (argc=<optimized out>, argv=<optimized out>) at main.cc:1707
#24 0x00005654ebd13901 in SquidMainSafe (argv=0x7ffcde3b0008, argc=6) at main.cc:1415
#25 main (argc=6, argv=0x7ffcde3b0008) at main.cc:1403

-- 
Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
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