OL6: bash-4.1.2-48.el6.x86_64 Dumps Core on UEK 2.6.39-400.300 (Doc ID 2508626.1)

Last updated on MAY 15, 2020

Applies to:

Symptoms

After upgrading the kernel to UEK 2.6.39-400.300, /bin/bash starts dumping abrt core.

/var/log/messages:

Feb 3 07:42:01 <HOST> abrt[15503]: Not saving repeating crash in '/bin/bash'
Feb 3 07:42:01 <HOST> abrt[15502]: Saved core dump of pid 15498 (/bin/bash) to /var/spool/abrt/ccpp-2019-02-03-07:42:01-15498 (606208 bytes)
Feb 3 07:42:01 <HOST> abrtd: Directory 'ccpp-2019-02-03-07:42:01-15498' creation detected
Feb 3 07:42:23 <HOST> abrtd: Generating core_backtrace
Feb 3 07:42:23 <HOST> abrtd: Duplicate: core backtrace
Feb 3 07:42:23 <HOST> abrtd: DUP_OF_DIR: /var/spool/abrt/ccpp-2019-01-20-07:37:01-9384
Feb 3 07:42:23 <HOST> abrtd: Deleting problem directory ccpp-2019-02-03-07:42:01-15498 (dup of ccpp-2019-01-20-07:37:01-9384)
Feb 3 07:42:24 <HOST> abrtd: Sending an email...
Feb 3 07:42:24 <HOST> abrtd: Email was sent to: "root@localhost"

Below messages are seen on the console:

*** glibc detected *** /bin/sh: malloc(): memory corruption (fast): 0x000000000253a030 ***
*** glibc detected *** /bin/sh: malloc(): memory corruption (fast): 0x000000000253a030 ***
======= Backtrace: =========
/lib64/libc.so.6[0x33c8075e5e]
======= Backtrace: =========
/lib64/libc.so.6[0x33c807a528]
/lib64/libc.so.6[0x33c8075e5e]
/lib64/libc.so.6[0x33c807a528]
/bin/sh(make_child+0x173)[0x43e5a3]
/bin/sh(xmalloc+0x23)[0x466743]
/bin/sh(execute_command_internal+0x943)[0x430463]
/bin/sh(copy_word_list+0x21)[0x438f51]
/bin/sh(execute_command_internal+0x89d)[0x4303bd]
/bin/sh[0x42ee9f]
/bin/sh(execute_command_internal+0x12e9)[0x430e09]
/bin/sh[0x43320e]
/bin/sh[0x4329b7]
/bin/sh[0x43362a]
/bin/sh(execute_command_internal+0x14d9)[0x430ff9]
/bin/sh(/bin/sh[0x4335b3]
/bin/sh(execute_command_internal+0x12e9)[0x430e09]
/bin/sh(execute_command+0x4e)[0x43110e]
/bin/sh[0x4335b3]
/bin/sh(execute_command+0x4e)[0x43110e]
/bin/sh(execute_command_internal+0xa25)[0x430545]
/lib64/libc.so.6(__libc_start_main+0x100)[0x33c801ed20]
/bin/sh(main+0xe3c)[0x41cebc]
00400000-004d5000 r-xp 00000000 08:03 10559500 /bin/bash
006d4000-006dd000 rw-p 000d4000 08:03 10559500 /bin/bash
006dd000-006e3000 rw-p 00000000 00:00 0
008dc000-008e5000 rw-p 000dc000 08:03 10559500 /bin/bash
02531000-02552000 rw-p 00000000 00:00 0 [heap]
33c7800000-33c7820000 r-xp 00000000 08:03 15958044 /lib64/ld-2.12.so
33c7a20000-33c7a21000 r--p 00020000 08:03 15958044 /lib64/ld-2.12.so
33c7a21000-33c7a22000 rw-p 00021000 08:03 15958044 /lib64/ld-2.12.so
33c7a22000-33c7a23000 rw-p 00000000 00:00 0
33c7c00000-33c7c02000 r-xp 00000000 08:03 15958151 /lib64/libdl-2.12.so
33c7c02000-33c7e02000 ---p 00002000 08:03 15958151 /lib64/libdl-2.12.so
33c7e02000-33c7e03000 r--p 00002000 08:03 15958151 /lib64/libdl-2.12.so

Cause

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