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DescriptionDasharath Masirkar
2017-08-30 10:08:32 UTC
Description of problem:
The customer is impacted by upstream bug https://bz.apache.org/bugzilla/show_bug.cgi?id=51747, When they upload 510 MB or larger size file it results in an Apache httpd process crashed (Segmentation fault). This only happens if SSL is enabled in Apache httpd configuration. If SSL is turned off then uploading files works as expected.
Version-Release number of selected component (if applicable):
mod_fcgid-2.3.9-4.el7
How reproducible:
Always
Steps to Reproduce:
Please refer reproducible steps from BZ https://bz.apache.org/bugzilla/show_bug.cgi?id=51747#c0
Actual results:
Apache httpd crash with Segmentation fault error
Expected results:
Apache httpd should allow uploading file larger than 512 MB even with SSL is enabled.
Additional info:
Please refer upstream bug https://bz.apache.org/bugzilla/show_bug.cgi?id=51747
Please is backtrace of the crash:
Program terminated with signal 11, Segmentation fault.
#0 apr_bucket_free (mem=mem@entry=0x0) at buckets/apr_buckets_alloc.c:194
194 if (node->size == SMALL_NODE_SIZE) {
(gdb) bt
#0 apr_bucket_free (mem=mem@entry=0x0) at buckets/apr_buckets_alloc.c:194
#1 0x00007fc80d9db580 in file_bucket_read (e=0x7fc816883fd8, str=0x7ffff38120e8, len=0x7ffff38120e0, block=<optimized out>) at buckets/apr_buckets_file.c:125
#2 0x00007fc809d171d1 in proc_write_ipc (ipc_handle=ipc_handle@entry=0x7fc80fd2b858, output_brigade=output_brigade@entry=0x7fc80fd2b598) at fcgid_proc_unix.c:776
#3 0x00007fc809d100d2 in handle_request_ipc (location_ptr=<synthetic pointer>, bucket_ctx=0x7fc80fd2b858, output_brigade=0x7fc80fd2b598, role=1, r=0x7fc80fcac6c0)
at fcgid_bridge.c:302
#4 handle_request (r=r@entry=0x7fc80fcac6c0, role=role@entry=1, cmd_conf=cmd_conf@entry=0x7fc80fcc2ab8, output_brigade=output_brigade@entry=0x7fc80fd2b598)
at fcgid_bridge.c:488
#5 0x00007fc809d1048c in bridge_request (r=r@entry=0x7fc80fcac6c0, role=role@entry=1, cmd_conf=cmd_conf@entry=0x7fc80fcc2ab8) at fcgid_bridge.c:765
#6 0x00007fc809d0eca1 in fcgid_handler (r=0x7fc80fcac6c0) at mod_fcgid.c:290
#7 0x00007fc80e2e5690 in ap_run_handler (r=r@entry=0x7fc80fcac6c0) at config.c:169
#8 0x00007fc80e2e5bd9 in ap_invoke_handler (r=r@entry=0x7fc80fcac6c0) at config.c:439
#9 0x00007fc80e2fa00a in ap_process_async_request (r=r@entry=0x7fc80fcac6c0) at http_request.c:317
#10 0x00007fc80e2fa2e4 in ap_process_request (r=r@entry=0x7fc80fcac6c0) at http_request.c:363
#11 0x00007fc80e2f6c32 in ap_process_http_sync_connection (c=0x7fc80fca2d90) at http_core.c:190
#12 ap_process_http_connection (c=0x7fc80fca2d90) at http_core.c:231
#13 0x00007fc80e2eec90 in ap_run_process_connection (c=c@entry=0x7fc80fca2d90) at connection.c:41
#14 0x00007fc80e2ef078 in ap_process_connection (c=c@entry=0x7fc80fca2d90, csd=<optimized out>) at connection.c:202
#15 0x00007fc809f2380f in child_main (child_num_arg=child_num_arg@entry=2) at prefork.c:707
#16 0x00007fc809f23a55 in make_child (s=0x7fc80fad5310, slot=slot@entry=2) at prefork.c:810
#17 0x00007fc809f23ab6 in startup_children (number_to_start=3) at prefork.c:828
#18 0x00007fc809f247c0 in prefork_run (_pconf=<optimized out>, plog=0x7fc80fadb358, s=0x7fc80fad5310) at prefork.c:986
#19 0x00007fc80e2c9f6e in ap_run_mpm (pconf=pconf@entry=0x7fc80faae138, plog=0x7fc80fadb358, s=0x7fc80fad5310) at mpm_common.c:96
#20 0x00007fc80e2c2d76 in main (argc=8, argv=0x7ffff3817d38) at main.c:777
#2 0x00007fc809d171d1 in proc_write_ipc (ipc_handle=ipc_handle@entry=0x7fc80fd2b858, output_brigade=output_brigade@entry=0x7fc80fd2b598) at fcgid_proc_unix.c:776
len = 0
base = 0x0
rv = <optimized out>
vec = {{iov_base = 0x7fc816888848, iov_len = 8000}, {iov_base = 0x7fc81688a858, iov_len = 192}, {iov_base = 0x7fc813cb85e8, iov_len = 8}, {
iov_base = 0x7fc81688c868, iov_len = 8000}, {iov_base = 0x7fc81688e878, iov_len = 192}, {iov_base = 0x7fc813cc3928, iov_len = 8}, {iov_base = 0x7fc816890888,
iov_len = 8000}, {iov_base = 0x7fc813cc32e8, iov_len = 8}}
nvec = 7
e = 0x7fc816883fd8