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  1. Couchbase Server
  2. MB-16752

[Backport 3.1.x] Check that the file handle on the memcached log was open correctly

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Details

    • Bug
    • Resolution: Fixed
    • Critical
    • 3.1.4
    • 3.0.3
    • memcached
    • Security Level: Public
    • None
    • Untriaged
    • No
    • KV: Nov 15 - Dec 4

    Description

      If the memcached process runs out of file descriptors, the file logger module fails to check the result of fopen when opening / rotating log files. As a when it next attempts to flush the logfile it segfaults:

      #0  _IO_fwrite (buf=0x2116000, size=1, count=352, fp=0x2722640) at iofwrite.c:37
      		 
      #1  0x00007f071173dc17 in flush_pending_io (arg=0x20f2900) at /home/buildbot/buildbot_slave/centos-6-x64-30x-builder/build/build/memcached/extensions/loggers/file_logger.c:289
      		 
      #2  logger_thead_main (arg=0x20f2900) at /home/buildbot/buildbot_slave/centos-6-x64-30x-builder/build/build/memcached/extensions/loggers/file_logger.c:329
      		 
      #3  0x00007f0715b2c8ea in platform_thread_wrap (arg=<value optimized out>) at /home/buildbot/buildbot_slave/centos-6-x64-30x-builder/build/build/platform/src/cb_pthreads.c:19
      		 
      #4  0x00007f071483f9d1 in start_thread (arg=0x7f071173b700) at pthread_create.c:301
      		 
      #5  0x00007f07139e08fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115

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        Issue Links

          blocks

          Task - A task that needs to be done. MB-16962 3.1.4 Minor Release

          • Major - Major loss of function.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MB-16689 Check that the file handle on the memcached log was open correctly

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
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              drigby Dave Rigby (Inactive)
              drigby Dave Rigby (Inactive)
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              Dates

                Created:
                Updated:
                Resolved:

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