Emacs 25 from GIT build issue under Ubuntu 16.10

Emacs 25 from GIT build issue under Ubuntu 16.10

[Tim Cross]

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After upgrade to ubuntu gnome 16.10, attempts to build from fresh git clone
of emacs repo gives an seg fault error when trying to run dumped image. All
was working fine under Ubuntu 16.04.

Loading /home/tcross/git/emacs/lisp/electric.el (source)...
Loading /home/tcross/git/emacs/lisp/emacs-lisp/eldoc.el (source)...
Loading /home/tcross/git/emacs/lisp/cus-start.el (source)...
Loading /home/tcross/git/emacs/lisp/tooltip.el (source)...
Finding pointers to doc strings...
Finding pointers to doc strings...done
Dumping under the name emacs
20812288 of 33554432 static heap bytes used
Makefile:749: recipe for target 'bootstrap-emacs' failed
make[1]: *** [bootstrap-emacs] Segmentation fault (core dumped)
make[1]: Leaving directory '/home/tcross/git/emacs/src'
Makefile:398: recipe for target 'src' failed
make: *** [src] Error 2


-- 
regards,

Tim

--
Tim Cross

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Re: Emacs 25 from GIT build issue under Ubuntu 16.10

[Tim Cross]

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Just FYI, switched to git master branch and tried to build from there with
the same error, so issue is not restricted to just emacs-25 release.

On 15 October 2016 at 10:06, Tim Cross <theophilusx@gmail.com> wrote:

> After upgrade to ubuntu gnome 16.10, attempts to build from fresh git
> clone of emacs repo gives an seg fault error when trying to run dumped
> image. All was working fine under Ubuntu 16.04.
>
> Loading /home/tcross/git/emacs/lisp/electric.el (source)...
> Loading /home/tcross/git/emacs/lisp/emacs-lisp/eldoc.el (source)...
> Loading /home/tcross/git/emacs/lisp/cus-start.el (source)...
> Loading /home/tcross/git/emacs/lisp/tooltip.el (source)...
> Finding pointers to doc strings...
> Finding pointers to doc strings...done
> Dumping under the name emacs
> 20812288 of 33554432 static heap bytes used
> Makefile:749: recipe for target 'bootstrap-emacs' failed
> make[1]: *** [bootstrap-emacs] Segmentation fault (core dumped)
> make[1]: Leaving directory '/home/tcross/git/emacs/src'
> Makefile:398: recipe for target 'src' failed
> make: *** [src] Error 2
>
>
> --
> regards,
>
> Tim
>
> --
> Tim Cross
>
>


-- 
regards,

Tim

--
Tim Cross

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Re: Emacs 25 from GIT build issue under Ubuntu 16.10

[Paul Eggert]

Does plain Emacs 24.5 build OK on Ubuntu 16.10?

Which Emacs version ships with Ubuntu 16.10? Emacs 24.5 or 25.1? Either 
way, do Ubuntu's patches to Emacs seem relevant to your problem?

Others are reporting similar problems. See:

http://askubuntu.com/questions/836690/seg-fault-building-emacs25-in-ubuntu-16-10

Re: Emacs 25 from GIT build issue under Ubuntu 16.10

[Óscar Fuentes]

Tim Cross <theophilusx@gmail.com> writes:

> After upgrade to ubuntu gnome 16.10, attempts to build from fresh git clone
> of emacs repo gives an seg fault error when trying to run dumped image. All
> was working fine under Ubuntu 16.04.

(gdb) bt full
#0  __memcpy_ssse3 () at ../sysdeps/x86_64/multiarch/memcpy-ssse3.S:130
No locals.
#1  0x00005555557a3635 in unexec (
    new_name=0x55555702c248 <bss_sbrk_buffer+18876520> "/home/oscar/dev/emacs/build/src/emacs", 
    old_name=0x55555702c278 <bss_sbrk_buffer+18876568> "/home/oscar/dev/emacs/build/src/temacs") at ../../emacs/src/unexelf.c:406
        new_file = 6
        old_file = 5
        new_file_size = 1479866440
        new_break = 0x555557e2d000
        old_base = 0x7fffed274000 "\177ELF\002\001\001"
        new_base = 0x7fff94f24000 "\177ELF\002\001\001"
        old_file_h = 0x7fffed274000
        new_file_h = 0x7fff94f24000
        old_program_h = 0x7fffed274040
        new_program_h = 0x7fff94f24040
        old_section_h = 0x7fffedfe0588
        new_section_h = 0x7fffed272d88
        old_section_names = 0x7fffedfe0401 ""
        new_section_names = 0x0
        old_bss_seg = 0x7fffed2740e8
        new_bss_seg = 0x7fff94f240e8
        old_bss_addr = 8693760
        new_bss_addr = 93825035063296
        old_bss_size = 34134184
        bss_size_growth = 1465788416
        new_data2_size = 1465788416
        old_bss_offset = 6596608
        new_data2_offset = 6596608
        n = 0
        old_bss_index = 31
        stat_buf = {
          st_dev = 2050, 
          st_ino = 68041472, 
          st_nlink = 1, 
          st_mode = 33277, 
          st_uid = 1000, 
          st_gid = 1000, 
          __pad0 = 0, 
          st_rdev = 0, 
          st_size = 14078024, 
          st_blksize = 4096, 
          st_blocks = 27504, 
          st_atim = {
            tv_sec = 1476504568, 
            tv_nsec = 228299327
          }, 
          st_mtim = {
            tv_sec = 1476504568, 
            tv_nsec = 140297521
          }, 
          st_ctim = {
            tv_sec = 1476504568, 
            tv_nsec = 152297767
          }, 
          __glibc_reserved = {0, 0, 0}
        }
        old_file_size = 14078024
#2  0x00005555556b947e in Fdump_emacs (filename=93825019976356, symfile=93825019976324)
    at ../../emacs/src/emacs.c:2157
        tem = 0
        symbol = 14125536
        count = 20
#3  0x000055555575c6bf in eval_sub (form=93825005401091) at ../../emacs/src/eval.c:2190
        i = 2
        maxargs = 2
        args_left = 0
        numargs = 10
        fun = 93824997693589
        val = 0
        original_fun = 678816
        original_args = 93825006680323
        funcar = 93825001905715
        count = 19
        argvals = {93825020173636, 93825020173604, 93825001379152, 3914156642820, 0, 
          140737488345440, 93825001379152, 4294957424}
#4  0x0000555555758b6b in Fprogn (body=93825006680259) at ../../emacs/src/eval.c:432
        val = 0
#5  0x000055555575c2ad in eval_sub (form=93825005891267) at ../../emacs/src/eval.c:2140
        args_left = 93825006143363
        numargs = 26
        fun = 93825000899485
        val = 93825001905731
        original_fun = 37776
        original_args = 93825006143363
        funcar = 0
        count = 18
        argvals = {93825002017284, 93825001905747, 93825001379152, 93824994561541, 0, 
          140737488345776, 93825001379152, 23760}
#6  0x0000555555758a6b in Fif (args=93825005891283) at ../../emacs/src/eval.c:389
        cond = 93825001905731
#7  0x000055555575c2ad in eval_sub (form=93825001905987) at ../../emacs/src/eval.c:2140
        args_left = 93825005891283
        numargs = 10
        fun = 93825000899389
        val = 140737488346120
        original_fun = 26112
        original_args = 93825005891283
        funcar = 23760
        count = 17
        argvals = {140737488346144, 93824994375251, 0, 17, 140737488346144, 0, 
          93825001379152, 38352}
#8  0x000055555578c701 in readevalloop (readcharfun=23760, 
    stream=0x555555e65b80 <bss_sbrk_buffer+237984>, sourcename=93825002194596, 
    printflag=false, unibyte=0, readfun=0, start=0, end=0) at ../../emacs/src/lread.c:1929
        count1 = 17
        c = 40
        val = 93825001905987
        count = 13
        b = 0x0
        continue_reading_p = true
        lex_bound = 0
        whole_buffer = false
        first_sexp = false
        macroexpand = 0
#9  0x000055555578aef1 in Fload (file=93825002194340, noerror=0, nomessage=0, nosuffix=0, 
    must_suffix=0) at ../../emacs/src/lread.c:1334
        stream = 0x555555e65b80 <bss_sbrk_buffer+237984>
        fd = 4
        fd_index = 5
        count = 5
        found = 93825002194532
        efound = 46416
        hist_file_name = 93825002194596
        newer = false
        compiled = false
        handler = 93825000894935
        safe_p = true
        fmode = 0x55555583facf "r"
        version = 0
        is_elc = 0
#10 0x000055555575c755 in eval_sub (form=93825001898435) at ../../emacs/src/eval.c:2201
        i = 5
        maxargs = 5
        args_left = 0
        numargs = 6
        fun = 93825000908661
        val = 93825001889920
        original_fun = 30624
        original_args = 93825001898419
        funcar = 27696
        count = 4
        argvals = {93825002194340, 0, 0, 0, 0, 93824994374216, 0, 27696}
#11 0x000055555575bd3b in Feval (form=93825001898435, lexical=0)
    at ../../emacs/src/eval.c:2009
        count = 3
#12 0x00005555556bb435 in top_level_2 () at ../../emacs/src/keyboard.c:1127
No locals.
#13 0x000055555575a79a in internal_condition_case (bfun=0x5555556bb412 <top_level_2>, 
    handlers=18240, hfun=0x5555556bae9e <cmd_error>) at ../../emacs/src/eval.c:1314
        val = 93824993666832
        c = 0x555555ed6a00 <bss_sbrk_buffer+700448>
#14 0x00005555556bb47a in top_level_1 (ignore=0) at ../../emacs/src/keyboard.c:1135
No locals.
#15 0x000055555575a0a5 in internal_catch (tag=45120, func=0x5555556bb437 <top_level_1>, 
    arg=0) at ../../emacs/src/eval.c:1080
        val = 93824993666832
        c = 0x555555ed6c00 <bss_sbrk_buffer+700960>
#16 0x00005555556bb364 in command_loop () at ../../emacs/src/keyboard.c:1096
No locals.
#17 0x00005555556baa7d in recursive_edit_1 () at ../../emacs/src/keyboard.c:703
        count = 1
        val = 93824994374291
#18 0x00005555556babf6 in Frecursive_edit () at ../../emacs/src/keyboard.c:774
        count = 0
        buffer = 0
#19 0x00005555556b8768 in main (argc=5, argv=0x7fffffffe398) at ../../emacs/src/emacs.c:1659
        dummy = 140737304496000
        stack_bottom_variable = 0 '\000'
        do_initial_setlocale = true
        dumping = true
        skip_args = 3
        no_loadup = false
        junk = 0x0
        dname_arg = 0x0
        ch_to_dir = 0x0
        original_pwd = 0x0
        disable_aslr = true
        rlim = {
          rlim_cur = 8720384, 
          rlim_max = 18446744073709551615
        }
        sockfd = -1

Lisp Backtrace:
"dump-emacs" (0xffffd920)
"progn" (0xffffd9e8)
"if" (0xffffdb38)
"load" (0xffffdfa0)

Re: Emacs 25 from GIT build issue under Ubuntu 16.10

[Eli Zaretskii]

> From: Tim Cross <theophilusx@gmail.com>
> Date: Sat, 15 Oct 2016 10:06:13 +1100
> 
> After upgrade to ubuntu gnome 16.10, attempts to build from fresh git clone of emacs repo gives an seg fault
> error when trying to run dumped image. All was working fine under Ubuntu 16.04.
> 
> Loading /home/tcross/git/emacs/lisp/electric.el (source)...
> Loading /home/tcross/git/emacs/lisp/emacs-lisp/eldoc.el (source)...
> Loading /home/tcross/git/emacs/lisp/cus-start.el (source)...
> Loading /home/tcross/git/emacs/lisp/tooltip.el (source)...
> Finding pointers to doc strings...
> Finding pointers to doc strings...done
> Dumping under the name emacs
> 20812288 of 33554432 static heap bytes used
> Makefile:749: recipe for target 'bootstrap-emacs' failed
> make[1]: *** [bootstrap-emacs] Segmentation fault (core dumped)
> make[1]: Leaving directory '/home/tcross/git/emacs/src'
> Makefile:398: recipe for target 'src' failed
> make: *** [src] Error 2

This is bug#24682, please follow up there.

Re: Emacs 25 from GIT build issue under Ubuntu 16.10

[Eli Zaretskii]

> From: Paul Eggert <eggert@cs.ucla.edu>
> Date: Fri, 14 Oct 2016 23:09:50 -0500
> 
> Does plain Emacs 24.5 build OK on Ubuntu 16.10?
> 
> Which Emacs version ships with Ubuntu 16.10? Emacs 24.5 or 25.1? Either 
> way, do Ubuntu's patches to Emacs seem relevant to your problem?
> 
> Others are reporting similar problems. See:
> 
> http://askubuntu.com/questions/836690/seg-fault-building-emacs25-in-ubuntu-16-10

Let's maintain all the relevant information about this problem in the
bug tracker, there's a bug about this, bug#24682.

Re: Emacs 25 from GIT build issue under Ubuntu 16.10

[Eli Zaretskii]

> From: Óscar Fuentes <ofv@wanadoo.es>
> Date: Sat, 15 Oct 2016 06:15:04 +0200
> 
> Tim Cross <theophilusx@gmail.com> writes:
> 
> > After upgrade to ubuntu gnome 16.10, attempts to build from fresh git clone
> > of emacs repo gives an seg fault error when trying to run dumped image. All
> > was working fine under Ubuntu 16.04.
> 
> (gdb) bt full
> #0  __memcpy_ssse3 () at ../sysdeps/x86_64/multiarch/memcpy-ssse3.S:130
> No locals.
> #1  0x00005555557a3635 in unexec (
>     new_name=0x55555702c248 <bss_sbrk_buffer+18876520> "/home/oscar/dev/emacs/build/src/emacs", 
>     old_name=0x55555702c278 <bss_sbrk_buffer+18876568> "/home/oscar/dev/emacs/build/src/temacs") at ../../emacs/src/unexelf.c:406
>         new_file = 6
>         old_file = 5
>         new_file_size = 1479866440
>         new_break = 0x555557e2d000
>         old_base = 0x7fffed274000 "\177ELF\002\001\001"
>         new_base = 0x7fff94f24000 "\177ELF\002\001\001"
>         old_file_h = 0x7fffed274000
>         new_file_h = 0x7fff94f24000
>         old_program_h = 0x7fffed274040
>         new_program_h = 0x7fff94f24040
>         old_section_h = 0x7fffedfe0588
>         new_section_h = 0x7fffed272d88
>         old_section_names = 0x7fffedfe0401 ""
>         new_section_names = 0x0
>         old_bss_seg = 0x7fffed2740e8
>         new_bss_seg = 0x7fff94f240e8
>         old_bss_addr = 8693760
>         new_bss_addr = 93825035063296
>         old_bss_size = 34134184
>         bss_size_growth = 1465788416

Yes, exactly as reported in bug#24682.

Re: Emacs 25 from GIT build issue under Ubuntu 16.10

[Cesar Quiroz]

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16.10 has modified gcc to compile with -pie by default.  That just must get
in the way of unexec.

Search "gcc" in https://wiki.ubuntu.com/YakketyYak/ReleaseNotes,

I have tried this successfully (both emacs-25 and master):

1. in the git workdir:

$ ./autogen.sh

2. in the build directory:

$ ...../configure CFLAGS=-no-pie <other configure options>

and the binaries built fine.

On topic, it would be nice if there was a string in the binary that told
one how the $(config.status --config), so one could (more) easily rebuild a
binary.  Something like a function (emacs-configure-options).

This has worked with ASLR on (echo 2 > /proc/sys/kernel/randomize_va_space)
and with ASLR off (echo 0 > /proc/sys/kernel/randomize_va_space).

I hope this helps all to work with the new Ubuntu.

--César

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Re: Emacs 25 from GIT build issue under Ubuntu 16.10

[Óscar Fuentes]

Cesar Quiroz <cesar.quiroz@gmail.com> writes:

> On topic, it would be nice if there was a string in the binary that told
> one how the $(config.status --config), so one could (more) easily rebuild a
> binary.  Something like a function (emacs-configure-options).

There is the variable system-configuration-options. I don't know if that
captures the value of CFLAGS, though.

Re: Emacs 25 from GIT build issue under Ubuntu 16.10

[Paul Eggert]

On 10/15/2016 01:32 AM, Cesar Quiroz wrote:
> 16.10 has modified gcc to compile with -pie by default.

configure.ac on master knows about this problem, and attempts to build 
Emacs with -nopie. Please investigate why this is not working on Ubuntu 
16.10. Look in config.log near the string "accepts -nopie".