[Bug gdb/14564] New: ./common/linux-ptrace.c:117: internal-error: linux_ptrace_test_ret_to_nx: Assertion `WIFSTOPPED (status)' failed.

[Bug gdb/14564] New: ./common/linux-ptrace.c:117: internal-error: linux_ptrace_test_ret_to_nx: Assertion `WIFSTOPPED (status)' failed.

[anton.kochkov at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14564

             Bug #: 14564
           Summary: ./common/linux-ptrace.c:117: internal-error:
                    linux_ptrace_test_ret_to_nx: Assertion `WIFSTOPPED
                    (status)' failed.
           Product: gdb
           Version: 7.5
            Status: NEW
          Severity: normal
          Priority: P2
         Component: gdb
        AssignedTo: unassigned@sourceware.org
        ReportedBy: anton.kochkov@gmail.com
    Classification: Unclassified


Here is full session log:

┌─[ xvilka@XLaptop ] [ 4:08:44 ] ~ 
└>gdb gdb
GNU gdb (Gentoo 7.5 p1) 7.5
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-pc-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.gentoo.org/>...
Reading symbols from /usr/bin/gdb...(no debugging symbols found)...done.
(gdb) run elinks
Starting program: /usr/bin/gdb elinks
./common/linux-ptrace.c:117: internal-error: linux_ptrace_test_ret_to_nx:
Assertion `WIFSTOPPED (status)' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) n
./common/linux-ptrace.c:117: internal-error: linux_ptrace_test_ret_to_nx:
Assertion `WIFSTOPPED (status)' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) N
(gdb) n
Cannot execute this command while the selected thread is running.
(gdb) q
A debugging session is active.

    Inferior 1 [process 4439] will be killed.

Quit anyway? (y or n) y

Here is uname:
Linux XLaptop 3.5.1-hardened #1 PREEMPT Sun Aug 12 16:29:19 MSK 2012 i686
Intel(R) Celeron(R) CPU 743 @ 1.30GHz GenuineIntel GNU/Linux

Here is part of dmesg (PaX) error:

[2396058.354252] PAX: execution attempt in: <anonymous mapping>,
aa1d2000-aa1d5000 aa1d2000
[2396058.354259] PAX: terminating task: /usr/bin/gdb(gdb):15808, uid/euid:
1000/1000, PC: aa1d2000, SP: bb6d5690
[2396058.354262] PAX: bytes at PC: cc 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 
[2396058.354276] PAX: bytes at SP-4: aa1d2000 00000000 00000000 00000000
00000000 ffffffff 00000000 00000000 176cba91 00004200 00003dbd 00000000
0000003f 00003dbd 
00003dbd 00000000 cc6c4300 00003dbd 00003dbd 00000000 186d46f4 
[2396058.354319] grsec: denied resource overstep by requesting 4096 for
RLIMIT_CORE against limit 0 for /usr/bin/gdb[gdb:15808] uid/euid:1000/1000 
gid/egid:1000/1000, parent /usr/bin/gdb[gdb:15802] uid/euid:1000/1000
gid/egid:1000/1000
[2400796.221781] PAX: execution attempt in: <anonymous mapping>,
a486b000-a486e000 a486b000
[2400796.221789] PAX: terminating task: /usr/bin/gdb(gdb):4442, uid/euid:
1000/1000, PC: a486b000, SP: b4bb9440
[2400796.221792] PAX: bytes at PC: cc 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 
[2400796.221807] PAX: bytes at SP-4: a486b000 00000000 00000000 00000000
00000000 ffffffff 00000000 00000000 16505a91 00004200 00001157 00000000
0000003f 00001157 
00001157 00000000 4742b000 00001157 00001157 00000000 1750e6f4 
[2400796.221846] grsec: denied resource overstep by requesting 4096 for
RLIMIT_CORE against limit 0 for /usr/bin/gdb[gdb:4442] uid/euid:1000/1000 
gid/egid:1000/1000, parent /usr/bin/gdb[gdb:4437] uid/euid:1000/1000
gid/egid:1000/1000

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug gdb/14564] ./common/linux-ptrace.c:117: internal-error: linux_ptrace_test_ret_to_nx: Assertion `WIFSTOPPED (status)' failed.

[anton.kochkov at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14564

--- Comment #1 from Anton Kochkov <anton.kochkov at gmail dot com> 2012-09-09 08:42:18 UTC ---
7.4 version works well, without this bug

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug gdb/14564] ./common/linux-ptrace.c:117: internal-error: linux_ptrace_test_ret_to_nx: Assertion `WIFSTOPPED (status)' failed.

[anton.kochkov at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14564

--- Comment #2 from Anton Kochkov <anton.kochkov at gmail dot com> 2012-09-09 09:39:08 UTC ---
When add printf("status=%lx", status); before gdb_assert(WIFSTOPPED(status));
in gdb/common/linux-ptrace.c in function linux_ptrace_test_ret_to_nx() it show 
"status=9" before /common/linux-ptrace.c:117: internal-error:
linux_ptrace_test_ret_to_nx: Assertion `WIFSTOPPED (status)' failed.

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug gdb/14564] ./common/linux-ptrace.c:117: internal-error: linux_ptrace_test_ret_to_nx: Assertion `WIFSTOPPED (status)' failed.

[jan.kratochvil at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14564

--- Comment #3 from Jan Kratochvil <jan.kratochvil at redhat dot com> 2012-09-09 12:21:48 UTC ---
Created attachment 6629
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6629
Detection of PaX, also on x86_64.

Could you check if this patch works?  It would be nice to test it also on
x86_64.
Downloading some gentoo .iso but not sure how it will work for me.

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug gdb/14564] ./common/linux-ptrace.c:117: internal-error: linux_ptrace_test_ret_to_nx: Assertion `WIFSTOPPED (status)' failed.

[jan.kratochvil at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14564

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

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

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug gdb/14564] ./common/linux-ptrace.c:117: internal-error: linux_ptrace_test_ret_to_nx: Assertion `WIFSTOPPED (status)' failed.

[anton.kochkov at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14564

--- Comment #4 from Anton Kochkov <anton.kochkov at gmail dot com> 2012-09-09 13:50:13 UTC ---
(In reply to comment #3)
> Created attachment 6629 [details]
> Detection of PaX, also on x86_64.
> 
> Could you check if this patch works?  It would be nice to test it also on
> x86_64.
> Downloading some gentoo .iso but not sure how it will work for me.

With applied patch:

└>gdb `which elinks`
GNU gdb (Gentoo 7.5 p1) 7.5
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-pc-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.gentoo.org/>...
Reading symbols from /usr/bin/elinks...(no debugging symbols found)...done.
(gdb) run http://google.com
Starting program: /usr/bin/elinks http://google.com
./common/linux-ptrace.c:136: internal-error: linux_ptrace_test_ret_to_nx:
Assertion `WIFSIGNALED (status) == SIGKILL' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n)

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug gdb/14564] ./common/linux-ptrace.c:117: internal-error: linux_ptrace_test_ret_to_nx: Assertion `WIFSTOPPED (status)' failed.

[jan.kratochvil at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14564

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #6629|0                           |1
        is obsolete|                            |

--- Comment #5 from Jan Kratochvil <jan.kratochvil at redhat dot com> 2012-09-09 13:54:29 UTC ---
Created attachment 6630
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6630
Fixed patch.

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug gdb/14564] ./common/linux-ptrace.c:117: internal-error: linux_ptrace_test_ret_to_nx: Assertion `WIFSTOPPED (status)' failed.

[anton.kochkov at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14564

--- Comment #6 from Anton Kochkov <anton.kochkov at gmail dot com> 2012-09-09 14:09:47 UTC ---
(In reply to comment #5)
> Created attachment 6630 [details]
> Fixed patch.

Now I have this output:

┌─[ xvilka@XLaptop ] [12:09:19 ] ~/gdb-bug 
└>gdb `which elinks`
GNU gdb (Gentoo 7.5 p1) 7.5
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-pc-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.gentoo.org/>...
Reading symbols from /usr/bin/elinks...(no debugging symbols found)...done.
(gdb) run http://google.com
Starting program: /usr/bin/elinks http://google.com
warning: linux_ptrace_test_ret_to_nx: Cannot PTRACE_KILL: No such process
warning: Cannot call inferior functions, Linux kernel PaX protection forbids
return to non-executable pages!
warning: Could not load shared library symbols for linux-gate.so.1.
Do you need "set solib-search-path" or "set sysroot"?
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0xa9249d93 in GC_is_black_listed () from /usr/lib/libgc.so.1
(gdb)

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug gdb/14564] ./common/linux-ptrace.c:117: internal-error: linux_ptrace_test_ret_to_nx: Assertion `WIFSTOPPED (status)' failed.

[jan.kratochvil at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14564

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Attachment #6630|0                           |1
        is obsolete|                            |

--- Comment #7 from Jan Kratochvil <jan.kratochvil at redhat dot com> 2012-09-09 14:14:44 UTC ---
Created attachment 6631
  --> http://sourceware.org/bugzilla/attachment.cgi?id=6631
Patch #3.

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug gdb/14564] ./common/linux-ptrace.c:117: internal-error: linux_ptrace_test_ret_to_nx: Assertion `WIFSTOPPED (status)' failed.

[anton.kochkov at gmail dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=14564

--- Comment #8 from Anton Kochkov <anton.kochkov at gmail dot com> 2012-09-09 14:36:41 UTC ---
(In reply to comment #7)
> Created attachment 6631 [details]
> Patch #3.

Yes, it works:


┌─[ xvilka@XLaptop ] [12:09:19 ] ~/gdb-bug 
└>gdb `which elinks`
GNU gdb (Gentoo 7.5 p1) 7.5
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-pc-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.gentoo.org/>...
Reading symbols from /usr/bin/elinks...(no debugging symbols found)...done.
(gdb) run http://google.com
Starting program: /usr/bin/elinks http://google.com
warning: Cannot call inferior functions, Linux kernel PaX protection forbids
return to non-executable pages!
warning: Could not load shared library symbols for linux-gate.so.1.
Do you need "set solib-search-path" or "set sysroot"?
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/libthread_db.so.1".

Program received signal SIGSEGV, Segmentation fault.
0x9d11ed93 in GC_is_black_listed () from /usr/lib/libgc.so.1
(gdb)

-- 
Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

[Bug gdb/14564] ./common/linux-ptrace.c:117: internal-error: linux_ptrace_test_ret_to_nx: Assertion `WIFSTOPPED (status)' failed.

[ssbssa at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=14564

Hannes Domani <ssbssa at sourceware dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ssbssa at sourceware dot org

--- Comment #9 from Hannes Domani <ssbssa at sourceware dot org> ---
(In reply to Anton Kochkov from comment #8)
> (In reply to comment #7)
> > Created attachment 6631 [details]
> > Patch #3.
> 
> Yes, it works:

A version of this patch was applied here:
https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=6e3c039e9cd766aae9e300fef549926ef2df2bc9

So can this be closed?

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug gdb/14564] ./common/linux-ptrace.c:117: internal-error: linux_ptrace_test_ret_to_nx: Assertion `WIFSTOPPED (status)' failed.

[jan at jankratochvil dot net]

https://sourceware.org/bugzilla/show_bug.cgi?id=14564

Jan Kratochvil <jan at jankratochvil dot net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|ASSIGNED                    |RESOLVED

--- Comment #10 from Jan Kratochvil <jan at jankratochvil dot net> ---
Fixed.

-- 
You are receiving this mail because:
You are on the CC list for the bug.