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Subject DO NOT REPLY [Bug 52282] New: Apache2 exit signal Segmentation fault (11) apr_bucket_free
Date Sun, 04 Dec 2011 04:22:29 GMT

             Bug #: 52282
           Summary: Apache2 exit signal Segmentation fault (11)
           Product: Apache httpd-2
           Version: 2.2.20
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: blocker
          Priority: P2
         Component: All
    Classification: Unclassified

I am running Apache2 with mod_fcgid and am trying to upload a 700MB file. By
the end of the upload proccess Apache dies with:

exit signal Segmentation fault (11)

however I am able to upload smaller files (around 200MB). PHP settings allow me
to upload up to 2GB files as well as the mod_fcgid directive MaxRequestLen.

I have tried to backtrack the error and this is what I have on a gdb command:

Program terminated with signal 11, Segmentation fault.
#0  0xb76bb8f3 in apr_bucket_free () from /usr/lib/


#0  0xb76bb8f3 in apr_bucket_free () from /usr/lib/
#1  0xb76bbd1c in ?? () from /usr/lib/
#2  0xb6ff5e1c in proc_write_ipc () from /usr/lib/apache2/modules/
#3  0xb6fed2a2 in ?? () from /usr/lib/apache2/modules/
#4  0xb6fed87a in ?? () from /usr/lib/apache2/modules/
#5  0xb6fee273 in bridge_request () from /usr/lib/apache2/modules/
#6  0xb6feb13a in ?? () from /usr/lib/apache2/modules/
#7  0xb7779c2e in ap_run_handler (r=0xa966b918)
    at /build/buildd/apache2-2.2.20/server/config.c:159
#8  0xb777a0a6 in ap_invoke_handler (r=0xa966b918)
    at /build/buildd/apache2-2.2.20/server/config.c:377
#9  0xb778b15c in ap_internal_redirect (new_uri=0xa966b908 "/index.php",
    at /build/buildd/apache2-2.2.20/modules/http/http_request.c:554
#10 0xb7330981 in ?? () from /usr/lib/apache2/modules/
#11 0xb7779c2e in ap_run_handler (r=0xb734d058)
    at /build/buildd/apache2-2.2.20/server/config.c:159
#12 0xb777a0a6 in ap_invoke_handler (r=0xb734d058)
    at /build/buildd/apache2-2.2.20/server/config.c:377
#13 0xb778bae8 in ap_process_request (r=0xb734d058)
    at /build/buildd/apache2-2.2.20/modules/http/http_request.c:282
#14 0xb7788600 in ap_process_http_connection (c=0xb73ad208)
    at /build/buildd/apache2-2.2.20/modules/http/http_core.c:190
#15 0xb77811fe in ap_run_process_connection (c=0xb73ad208)
    at /build/buildd/apache2-2.2.20/server/connection.c:43
#16 0xb7792e26 in process_socket (bucket_alloc=<optimized out>,
    my_child_num=0, sock=0xb73ad058, p=<optimized out>)
    at /build/buildd/apache2-2.2.20/server/mpm/worker/worker.c:544
#17 worker_thread (thd=0xb7108428, dummy=0xb90403c8)
    at /build/buildd/apache2-2.2.20/server/mpm/worker/worker.c:894
#18 0xb76a651f in ?? () from /usr/lib/
#19 0xb7669d31 in start_thread () from /lib/i386-linux-gnu/
#20 0xb75b90ce in clone () from /lib/i386-linux-gnu/
Backtrace stopped: Not enough registers or memory available to unwind further

The generated core file is around 3GB ...

Any help would be appreciated. 

Thank you.

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