From: Michael Albinus <michael.albinus@gmx.de>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 24682@debbugs.gnu.org
Subject: bug#24682: 26.0.50; Bootstrap failed
Date: Fri, 14 Oct 2016 17:33:53 +0200 [thread overview]
Message-ID: <8760ovj672.fsf@gmx.de> (raw)
In-Reply-To: <83eg3j3ruw.fsf@gnu.org> (Eli Zaretskii's message of "Fri, 14 Oct 2016 17:52:39 +0300")
Eli Zaretskii <eliz@gnu.org> writes:
>> Program received signal SIGSEGV, Segmentation fault.
>> __memcpy_ssse3 () at ../sysdeps/x86_64/multiarch/memcpy-ssse3.S:130
>> 130 ../sysdeps/x86_64/multiarch/memcpy-ssse3.S: No such file or directory.
>> (gdb) bt
>> #0 __memcpy_ssse3 () at ../sysdeps/x86_64/multiarch/memcpy-ssse3.S:130
>> #1 0x0000555555707f8b in memcpy (__len=1465781148, __src=0x781464,
>> __dest=0x7fff8fc1a464) at /usr/include/x86_64-linux-gnu/bits/string3.h:53
>> #2 unexec (
>> new_name=0x555557049248 <bss_sbrk_buffer+19825800>
>> "/usr/local/src/emacs/src/emacs",
>> old_name=0x555557049270 <bss_sbrk_buffer+19825840>
>> "/usr/local/src/emacs/src/temacs") at unexelf.c:406
>> #3 0x000055555565bea7 in Fdump_emacs (filename=93825020178884,
>> symfile=<optimized out>) at emacs.c:2157
>
> Isn't the value of __len (about 1.4GB) too large? unexelf.c:406 is
> this:
>
> /* Copy over what we have in memory now for the bss area. */
> memcpy (new_base + new_data2_offset, (caddr_t) old_bss_addr,
> bss_size_growth);
>
> So bss_size_growth is about 1.4GB, which sounds incredibly large.
>
> the value is computed on line 334, can you tell the values of the two
> variables that get subtracted there?
The values of local variables are (taken from *locals of temacs*)
int new_file 6
int old_file 5
off_t new_file_size 1487902352
caddr_t old_base 0x7fffe8193000 "\177ELF\002\001\001"
caddr_t new_base 0x7fff8f699000 "\177ELF\002\001\001"
Elf64_Ehdr * old_file_h 0x7fffe8193000
Elf64_Ehdr * new_file_h 0x7fff8f699000
Elf64_Phdr * old_program_h 0x7fffe8193040
Elf64_Phdr * new_program_h <optimized out>
Elf64_Shdr * old_section_h 0x7fffe96aaff0
Elf64_Shdr * new_section_h 0x7fffe8191b90
char * old_section_names 0x7fffe96aae5f ""
char * new_section_names <optimized out>
Elf64_Phdr * old_bss_seg <optimized out>
Elf64_Phdr * new_bss_seg 0x7fff8f6990e8
Elf64_Addr old_bss_addr 7869540
Elf64_Addr new_bss_addr 93825034231808
Elf64_Word old_bss_size <optimized out>
Elf64_Word bss_size_growth 1465781148
Elf64_Word new_data2_size 1465781152
Elf64_Off old_bss_offset 5772388
Elf64_Off new_data2_offset 5772388
ptrdiff_t n <optimized out>
ptrdiff_t old_bss_index 31
struct stat stat_buf <complex data type>
off_t old_file_size 22121200
next prev parent reply other threads:[~2016-10-14 15:33 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-13 10:05 bug#24682: 26.0.50; Bootstrap failed Michael Albinus
2016-10-13 12:44 ` Michael Albinus
2016-10-13 16:22 ` Eli Zaretskii
2016-10-13 16:27 ` Michael Albinus
2016-10-14 14:40 ` Michael Albinus
2016-10-14 14:52 ` Eli Zaretskii
2016-10-14 15:33 ` Michael Albinus [this message]
2016-10-14 17:11 ` Eli Zaretskii
2016-10-15 6:15 ` Eli Zaretskii
2016-10-15 6:21 ` Eli Zaretskii
2016-10-15 7:01 ` Michael Albinus
2016-10-15 7:18 ` Michael Albinus
2016-10-15 7:24 ` Tim Cross
2016-10-15 13:32 ` Óscar Fuentes
2016-10-15 7:19 ` Eli Zaretskii
2016-10-15 7:31 ` Michael Albinus
2016-10-15 6:39 ` Cesar Quiroz
2016-10-15 7:23 ` Eli Zaretskii
-- strict thread matches above, loose matches on Subject: below --
2016-10-14 23:06 Emacs 25 from GIT build issue under Ubuntu 16.10 Tim Cross
2016-10-14 23:20 ` Tim Cross
2016-10-15 4:09 ` Paul Eggert
2016-10-15 6:18 ` bug#24682: 26.0.50; Bootstrap failed Eli Zaretskii
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