[Bug gdb/18767] New: ASAN attach crash - 7.9 regression

[Bug gdb/18767] New: ASAN attach crash - 7.9 regression

[jan.kratochvil at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18767

            Bug ID: 18767
           Summary: ASAN attach crash - 7.9 regression
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
          Assignee: unassigned at sourceware dot org
          Reporter: jan.kratochvil at redhat dot com
  Target Milestone: ---

-fsanitize=address
gdb.base/attach-pie-noexec.exp

==32586==ERROR: AddressSanitizer: heap-use-after-free on address 0x60200004ed90
at pc 0x48ad50 bp 0x7ffceb3aef50 sp 0x7ffceb3aef20
READ of size 2 at 0x60200004ed90 thread T0
    #0 0x48ad4f in __interceptor_strlen
(/home/jkratoch/redhat/gdb-test-asan/gdb/gdb+0x48ad4f)
    #1 0xeafe5c in xstrdup xstrdup.c:33
    #2 0x85e024 in attach_command
/home/jkratoch/redhat/gdb-test-asan/gdb/infcmd.c:2680

regressed by:

commit 6c4486e63f7583ed85a0c72841f6ccceebbf858e
Author: Pedro Alves <palves@redhat.com>
Date:   Fri Oct 17 13:31:26 2014 +0100
    PR gdb/17471: Repeating a background command makes it foreground

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[Bug gdb/18767] ASAN attach crash - 7.9 regression

[jan.kratochvil at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18767

Jan Kratochvil <jan.kratochvil at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |jan.kratochvil at redhat dot com
           Assignee|unassigned at sourceware dot org   |jan.kratochvil at redhat dot com

--- Comment #1 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
[patch] ASAN attach crash - 7.9 regression [Re: [PATCH 4/4] PR gdb/17471:
Repeating a background command makes it foreground]
https://sourceware.org/ml/gdb-patches/2015-08/msg00052.html

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[Bug gdb/18767] ASAN attach crash - 7.9 regression

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=18767

--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jan Kratochvil <jkratoch@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=978b9495b78054b76052a09064cae8c94a58b93e

commit 978b9495b78054b76052a09064cae8c94a58b93e
Author: Jan Kratochvil <jan.kratochvil@redhat.com>
Date:   Tue Aug 4 13:40:44 2015 +0200

    ASAN attach crash - 7.9 regression

    -fsanitize=address
    gdb.base/attach-pie-noexec.exp

    ==32586==ERROR: AddressSanitizer: heap-use-after-free on address
0x60200004ed90 at pc 0x48ad50 bp 0x7ffceb3aef50 sp 0x7ffceb3aef20
    READ of size 2 at 0x60200004ed90 thread T0
        #0 0x48ad4f in __interceptor_strlen
(/home/jkratoch/redhat/gdb-test-asan/gdb/gdb+0x48ad4f)
        #1 0xeafe5c in xstrdup xstrdup.c:33
        #2 0x85e024 in attach_command
/home/jkratoch/redhat/gdb-test-asan/gdb/infcmd.c:2680

    regressed by:

    commit 6c4486e63f7583ed85a0c72841f6ccceebbf858e
    Author: Pedro Alves <palves@redhat.com>
    Date:   Fri Oct 17 13:31:26 2014 +0100
        PR gdb/17471: Repeating a background command makes it foreground

    gdb/ChangeLog
    2015-08-04  Jan Kratochvil  <jan.kratochvil@redhat.com>

        PR gdb/18767
        * infcmd.c (attach_command): Move ARGS_CHAIN cleanup after last ARGS
        use.

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[Bug gdb/18767] ASAN attach crash - 7.9 regression

[jan.kratochvil at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=18767

Jan Kratochvil <jan.kratochvil at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|---                         |7.10

--- Comment #3 from Jan Kratochvil <jan.kratochvil at redhat dot com> ---
Checked in master + 7.10.

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[Bug gdb/18767] ASAN attach crash - 7.9 regression

[cvs-commit at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=18767

--- Comment #4 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The gdb-7.10-branch branch has been updated by Jan Kratochvil
<jkratoch@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=fa68327bb429223d98887fa43db67fbb49629eb1

commit fa68327bb429223d98887fa43db67fbb49629eb1
Author: Jan Kratochvil <jan.kratochvil@redhat.com>
Date:   Tue Aug 4 13:40:44 2015 +0200

    ASAN attach crash - 7.9 regression

    -fsanitize=address
    gdb.base/attach-pie-noexec.exp

    ==32586==ERROR: AddressSanitizer: heap-use-after-free on address
0x60200004ed90 at pc 0x48ad50 bp 0x7ffceb3aef50 sp 0x7ffceb3aef20
    READ of size 2 at 0x60200004ed90 thread T0
        #0 0x48ad4f in __interceptor_strlen
(/home/jkratoch/redhat/gdb-test-asan/gdb/gdb+0x48ad4f)
        #1 0xeafe5c in xstrdup xstrdup.c:33
        #2 0x85e024 in attach_command
/home/jkratoch/redhat/gdb-test-asan/gdb/infcmd.c:2680

    regressed by:

    commit 6c4486e63f7583ed85a0c72841f6ccceebbf858e
    Author: Pedro Alves <palves@redhat.com>
    Date:   Fri Oct 17 13:31:26 2014 +0100
        PR gdb/17471: Repeating a background command makes it foreground

    gdb/ChangeLog
    2015-08-04  Jan Kratochvil  <jan.kratochvil@redhat.com>

        PR gdb/18767
        * infcmd.c (attach_command): Move ARGS_CHAIN cleanup after last ARGS
        use.

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