[Bug backtrace/13866] New: crashes from stale frame_info *

[Bug backtrace/13866] New: crashes from stale frame_info *

[jan.kratochvil at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13866

             Bug #: 13866
           Summary: crashes from stale frame_info *
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: backtrace
        AssignedTo: unassigned@sourceware.org
        ReportedBy: jan.kratochvil@redhat.com
    Classification: Unclassified
            Target: x86_64-unknown-linux-gnu


https://bugzilla.redhat.com/show_bug.cgi?id=804256

Even FSF GDB HEAD has still stale frame_info pointers:

#1  in freehook (ptr=0xb3c45e0, caller=0x825759) at mcheck.c:211
#2  in xfree (ptr=0xb3c45e0) at ./common/common-utils.c:107
#3  in obstack_free (h=0x1d4ac20, obj=0x0) at obstack.c:367
#4  in reinit_frame_cache () at frame.c:1542 
#5  in switch_to_thread (ptid=...) at thread.c:989
#6  in switch_to_program_space_and_thread (pspace=0x27c38a0) at progspace.c:494 
#7  in skip_prologue_sal (sal=0x24ec190) at symtab.c:2694
#8  in decode_all_digits () at linespec.c:2523
#9  in decode_line_internal () at linespec.c:1132
#10 in decode_line_1 (flags=1default_line=81) at linespec.c:1344
#11 in until_break_command (arg="",from_tty=1,anywhere=0) at breakpoint.c:10532

There are currently too many situations with stale frame_info * after
switch_to_* invalidate them now, IMO reinit_frame_cache needs to be removed in
these simple cases.

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[Bug backtrace/13866] crashes from stale frame_info *

[cvs-commit at gcc dot gnu.org]

http://sourceware.org/bugzilla/show_bug.cgi?id=13866

--- Comment #1 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> 2012-06-05 19:50:56 UTC ---
CVSROOT:    /cvs/src
Module name:    src
Changes by:    palves@sourceware.org    2012-06-05 19:50:51

Modified files:
    gdb            : ChangeLog breakpoint.c 

Log message:
    2012-06-05  Pedro Alves  <palves@redhat.com>

    PR backtrace/13866

    * breakpoint.c (until_break_command): Only fetch the selected
    frame after decode_line_1.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&r1=1.14326&r2=1.14327
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/breakpoint.c.diff?cvsroot=src&r1=1.678&r2=1.679

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[Bug backtrace/13866] crashes from stale frame_info *

[jan.kratochvil at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13866

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
         AssignedTo|unassigned at sourceware    |palves at redhat dot com
                   |dot org                     |

--- Comment #2 from Jan Kratochvil <jan.kratochvil at redhat dot com> 2012-06-12 19:51:43 UTC ---
There are currently no known bugs anymore.

Still some more proactive protection would be useful.

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[Bug backtrace/13866] crashes from stale frame_info *

[cvs-commit at gcc dot gnu.org]

http://sourceware.org/bugzilla/show_bug.cgi?id=13866

--- Comment #3 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> 2012-06-14 21:15:25 UTC ---
CVSROOT:    /cvs/src
Module name:    src
Changes by:    macro@sourceware.org    2012-06-14 21:15:20

Modified files:
    gdb            : ChangeLog infrun.c 

Log message:
    PR backtrace/13866
    * infrun.c (handle_inferior_event): Re-fetch frame and gdbarch
    after hiding inline functions.

Patches:
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/ChangeLog.diff?cvsroot=src&r1=1.14366&r2=1.14367
http://sourceware.org/cgi-bin/cvsweb.cgi/src/gdb/infrun.c.diff?cvsroot=src&r1=1.544&r2=1.545

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[Bug backtrace/13866] crashes from stale frame_info *

[jan.kratochvil at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=13866

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |11914

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