Package: emacs;
Reported by: Michael Welsh Duggan <md5i <at> md5i.com>
Date: Thu, 18 Mar 2021 15:40:01 UTC
Severity: normal
Found in version 28.0.50
Done: Michael Welsh Duggan <mwd <at> md5i.com>
Bug is archived. No further changes may be made.
View this message in rfc822 format
From: Michael Welsh Duggan <mwd <at> cert.org> To: martin rudalics <rudalics <at> gmx.at> Cc: "mwd <at> md5i.com" <mwd <at> md5i.com>, "47244 <at> debbugs.gnu.org" <47244 <at> debbugs.gnu.org>, Eli Zaretskii <eliz <at> gnu.org>, "schwab <at> linux-m68k.org" <schwab <at> linux-m68k.org> Subject: bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs Date: Wed, 31 Mar 2021 13:01:29 -0400
martin rudalics <rudalics <at> gmx.at> writes:
>> b->window_count is 1.
>
> What else should I have expected? I attach yet another diff. When the
> same assertion triggers we'll at least know which buffer got killed.
I have no idea what changed to cause this, but with this current
patchset I can't actually start emacs.
#0 set_buffer_internal_2 (b=0x7ffff2a3cb10) at ../../master/src/buffer.c:2157
old_buf = 0x0
tail = XIL(0x7ffff2a3cb15)
#1 0x0000555555759834 in set_buffer_internal_1 (b=0x7ffff2a3cb10)
at ../../master/src/buffer.c:2146
#2 0x0000555555753b93 in set_buffer_internal (b=0x7ffff2a3cb10)
at ../../master/src/buffer.h:1184
#3 0x0000555555759b16 in Fset_buffer (buffer_or_name=XIL(0x7ffff2a3cb15))
at ../../master/src/buffer.c:2246
buffer = XIL(0x7ffff2a3cb15)
#4 0x000055555564f0e4 in set_window_buffer
(window=XIL(0x555555f06315), buffer=XIL(0x7ffff2a3cb15), run_hooks_p=false, keep_margins_p=false) at ../../master/src/window.c:4041
w = 0x555555f06310
b = 0x7ffff2a3cb10
count = 0
samebuf = false
#5 0x00005555555a958f in make_frame (mini_p=true)
at ../../master/src/frame.c:978
frame = XIL(0x555555efe9dd)
f = 0x555555efe9d8
rw = 0x555555efec40
mw = 0x555555f06310
root_window = XIL(0x555555efec45)
mini_window = XIL(0x555555f06315)
#6 0x00005555555a9b5c in make_initial_frame ()
at ../../master/src/frame.c:1105
f = 0x7fffffffdbc0
terminal = 0x555555efe7c0
frame = make_fixnum(23456248299993)
#7 0x000055555565cce3 in init_window_once_for_pdumper ()
at ../../master/src/window.c:8198
old_mode_line_in_non_selected_windows = true
saved_dumped_with_pdumper = true
f = 0x7fffffffdbd0
#8 0x00005555557d1f02 in pdumper_load
(dump_filename=0x555555ec59f0 "/home/md5i/src/emacs/build/src/emacs.pdmp")
at ../../master/src/pdumper.c:5402
i = 7
dump_size = 10671168
stat = {
st_dev = 26,
st_ino = 2932069,
st_nlink = 2,
st_mode = 33188,
st_uid = 1000,
st_gid = 1000,
__pad0 = 0,
st_rdev = 0,
st_size = 10671168,
st_blksize = 4096,
st_blocks = 20848,
st_atim = {
tv_sec = 1617209633,
tv_nsec = 635319963
},
st_mtim = {
tv_sec = 1617209633,
tv_nsec = 619319612
},
st_ctim = {
tv_sec = 1617209633,
tv_nsec = 619319612
},
__glibc_reserved = {0, 0, 0}
}
dump_base = 140737259114496
dump_page_size = 65536
adj_discardable_start = 7208960
mark_bits = {{
bits = 0x7ffff252a010,
number_words = 13995
}, {
bits = 0x7ffff2545568,
number_words = 13995
}}
mark_bits_needed = 895639
header_buf = {
magic = "DUMPEDGNUEMACS\000",
fingerprint = "\336xݮhP\231\005n\261\265\071\226\201&\267\017L\211\005J\212K\366\242\263\274\250)H\353m",
dump_relocs = {
offset = 8354696,
nr_entries = 405189
},
object_starts = {
offset = 9975456,
nr_entries = 161879
},
emacs_relocs = {
offset = 10622976,
nr_entries = 3012
},
discardable_start = 7165112,
cold_start = 7340032,
hash_list = 7160960
}
header = 0x7fffffffdd50
sections = {{
spec = {
fd = 3,
size = 7208960,
offset = 0,
protection = DUMP_MEMORY_ACCESS_READWRITE
},
mapping = 0x0,
release = 0x0,
private = 0x0
}, {
spec = {
fd = 3,
size = 131072,
offset = 7208960,
protection = DUMP_MEMORY_ACCESS_READWRITE
},
mapping = 0x0,
release = 0x0,
private = 0x0
}, {
spec = {
fd = 3,
size = 3331136,
offset = 7340032,
protection = DUMP_MEMORY_ACCESS_READWRITE
},
mapping = 0x0,
release = 0x0,
private = 0x0
}}
start_time = {
tv_sec = 1617209923,
tv_nsec = 161514409
}
dump_filename_copy = 0x555555ec5a80 "/home/md5i/src/emacs/build/src/emacs.pdmp"
err = 0
dump_fd = 3
desired = "\336xݮhP\231\005n\261\265\071\226\201&\267\017L\211\005J\212K\366\242\263\274\250)H\353m"
hashes = XIL(0x7ffff2c35485)
load_timespec = {
tv_sec = 0,
tv_nsec = 0
}
#9 0x000055555571a568 in load_pdump (argc=1, argv=0x7fffffffe1c8)
at ../../master/src/emacs.c:860
real_exename = 0x555555ec59f0 "/home/md5i/src/emacs/build/src/emacs.pdmp"
exenamelen = 36
needed = 42
suffix = 0x555555946c46 ".pdmp"
result = 124
strip_suffix = 0x0
path_exec = 0x555555946c78 "/usr/local/libexec/emacs/28.0.50/x86_64-pc-linux-gnu"
dump_file = 0x555555ec59f0 "/home/md5i/src/emacs/build/src/emacs.pdmp"
skip_args = 0
bufsize = 128
argv0_base = 0x7fffffffe010 "\251\221\234!"
needed = 140737318400460
#10 0x000055555571aac9 in main (argc=1, argv=0x7fffffffe1c8) at ../../master/src/emacs.c:1068
stack_bottom_variable = 0x7ffff617e053
no_loadup = false
junk = 0x0
dname_arg = 0x0
ch_to_dir = 0x0
original_pwd = 0x0
dump_mode = 0x0
skip_args = 0
temacs = 0x0
attempt_load_pdump = true
rlim = {
rlim_cur = 140737323689568,
rlim_max = 140737318407889
}
lc_all = 0x687475410000001e <error: Cannot access memory at address 0x687475410000001e>
sockfd = 0
module_assertions = false
--
Michael Welsh Duggan
(mwd <at> cert.org)
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997,2003 nCipher Corporation Ltd,
1994-97 Ian Jackson.