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From "Gergo Repas (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-7796) Container-executor fails with segfault for certain OS configurations
Date Tue, 23 Jan 2018 16:24:00 GMT
Gergo Repas created YARN-7796:
---------------------------------

             Summary: Container-executor fails with segfault for certain OS configurations
                 Key: YARN-7796
                 URL: https://issues.apache.org/jira/browse/YARN-7796
             Project: Hadoop YARN
          Issue Type: Bug
          Components: nodemanager
    Affects Versions: 3.0.0
            Reporter: Gergo Repas
            Assignee: Gergo Repas
         Attachments: YARN-7796.000.patch

There is a relatively big (128K) buffer allocated on the stack in container-executor.c for
the purpose of copying files. As indicated by the below gdb stack trace, this allocation can
fail with SIGSEGV. This happens only on certain OS configurations - I can reproduce this
issue on RHEL 6.9:
{code:java}
[Thread debugging using libthread_db enabled]
main : command provided 0
main : run as user is systest
main : requested yarn user is systest

Program received signal SIGSEGV, Segmentation fault.
0x00000000004069bc in copy_file (input=7, in_filename=0x7ffd669fd2d6 "/yarn/nm/nmPrivate/container_1516711246952_0001_02_000001.tokens",
out_filename=0x932930 "/yarn/nm/usercache/systest/appcache/application_1516711246952_0001/container_1516711246952_0001_02_000001.tokens",
perm=384)
    at /root/hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/native/container-executor/impl/container-executor.c:966
966	  char buffer[buffer_size];
(gdb) bt
#0  0x00000000004069bc in copy_file (input=7, in_filename=0x7ffd669fd2d6 "/yarn/nm/nmPrivate/container_1516711246952_0001_02_000001.tokens",
out_filename=0x932930 "/yarn/nm/usercache/systest/appcache/application_1516711246952_0001/container_1516711246952_0001_02_000001.tokens",
perm=384)
    at /root/hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/native/container-executor/impl/container-executor.c:966
#1  0x0000000000409a81 in initialize_app (user=<value optimized out>, app_id=0x7ffd669fd2b7
"application_1516711246952_0001", nmPrivate_credentials_file=0x7ffd669fd2d6 "/yarn/nm/nmPrivate/container_1516711246952_0001_02_000001.tokens",
local_dirs=0x9331c8, log_roots=<value optimized out>, args=0x7ffd669fb168)
    at /root/hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/native/container-executor/impl/container-executor.c:1122
#2  0x0000000000403f90 in main (argc=<value optimized out>, argv=<value optimized
out>) at /root/hadoop/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/native/container-executor/impl/main.c:558
{code}



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