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* bug#66098: Crash in itree.c on macOS with incomplete backtrace
@ 2023-09-19  8:47 Stefan Kangas
  2023-09-19  9:23 ` Robert Pluim
                   ` (2 more replies)
  0 siblings, 3 replies; 22+ messages in thread
From: Stefan Kangas @ 2023-09-19  8:47 UTC (permalink / raw)
  To: 66098

After rebuilding from master yesterday, I've started seeing frequent
crashes (several times a day) on macOS.  Thus, I re-built with all the
debug flags to investigate, and was able to get Emacs to crash almost
immediately after start, with the command `M-x notmuch'.

I'm not able to get much of a backtrace (see below).  Could it be that
the stack got corrupted somehow?  I've left the gdb session of the
crashed process open in case anyone has any ideas.  Is valgrind the best
tool for digging further, or are there any other tricks I can try?

Note the messages "Backtrace stopped: frame did not save the PC" and
"Cannot access memory at address 0x1e00000500000039".

(gdb) bt
#0  0x00000001003fb62c in itree_validate (tree=0x6000002720e0,
node=0x1e00000500000001) at itree.c:416
#1  0x00000001003fb6bd in itree_node_end (tree=0x6000002720e0,
node=0x1e00000500000001) at itree.c:462
#2  0x00000001001aded4 in terminate_due_to_signal (sig=298035829,
backtrace_limit=1) at emacs.c:447
#3  0x0000000111c3aa70 in ?? ()
#4  0x0000000111c3aa75 in ?? ()
#5  0x00007ff7bfef5210 in ?? ()
#6  0x00000001001a540d in OVERLAY_END (ov=XIL(0x111c3aa75)) at ./buffer.h:1428
Backtrace stopped: frame did not save the PC
[New Thread 0x1c37 of process 20794]

Lisp Backtrace:
"redisplay_internal (C function)" (0x0)
(gdb) bt full
#0  0x00000001003fb62c in itree_validate (tree=0x6000002720e0,
node=0x1e00000500000001) at itree.c:416
No locals.
#1  0x00000001003fb6bd in itree_node_end (tree=0x6000002720e0,
node=0x1e00000500000001) at itree.c:462
No locals.
#2  0x00000001001aded4 in terminate_due_to_signal (sig=298035829,
backtrace_limit=1) at emacs.c:447
No locals.
#3  0x0000000111c3aa70 in ?? ()
No symbol table info available.
#4  0x0000000111c3aa75 in ?? ()
No symbol table info available.
#5  0x00007ff7bfef5210 in ?? ()
No symbol table info available.
#6  0x00000001001a540d in OVERLAY_END (ov=XIL(0x111c3aa75)) at ./buffer.h:1428
No locals.
Backtrace stopped: frame did not save the PC

Lisp Backtrace:
"redisplay_internal (C function)" (0x0)
(gdb) xbacktrace
[New Thread 0x1c5b of process 20794]
[New Thread 0x1e27 of process 20794]
"redisplay_internal (C function)" (0x0)
(gdb) p tree->otick
$1 = 1
(gdb) p node->otick
Cannot access memory at address 0x1e00000500000039
(gdb) maintenance info sections
Exec file: `/Users/skangas/wip/emacs/src/emacs', file type mach-o-x86-64.
 [0]      0x100003280->0x1004ad680 at 0x00003280: .text ALLOC LOAD
CODE HAS_CONTENTS
 [1]      0x1004ad680->0x1004ae96a at 0x004ad680: __TEXT.__stubs ALLOC
LOAD READONLY CODE HAS_CONTENTS
 [2]      0x1004ae96c->0x1004b0902 at 0x004ae96c: __TEXT.__stub_helper
ALLOC LOAD READONLY CODE HAS_CONTENTS
 [3]      0x1004b0910->0x1004c6c5f at 0x004b0910: .const ALLOC LOAD
READONLY DATA HAS_CONTENTS
 [4]      0x1004c6c5f->0x10051d801 at 0x004c6c5f: .cstring ALLOC LOAD
READONLY DATA HAS_CONTENTS
 [5]      0x10051d804->0x10051d820 at 0x0051d804:
__TEXT.__gcc_except_tab ALLOC LOAD READONLY CODE HAS_CONTENTS
 [6]      0x10051d820->0x100521807 at 0x0051d820:
__TEXT.__objc_methname ALLOC LOAD READONLY CODE HAS_CONTENTS
 [7]      0x100521807->0x100521905 at 0x00521807:
__TEXT.__objc_classname ALLOC LOAD READONLY CODE HAS_CONTENTS
 [8]      0x100521905->0x100523e3f at 0x00521905:
__TEXT.__objc_methtype ALLOC LOAD READONLY CODE HAS_CONTENTS
 [9]      0x100523e40->0x100523ffc at 0x00523e40: __TEXT.__unwind_info
ALLOC LOAD READONLY CODE HAS_CONTENTS
 [10]     0x100524000->0x100524380 at 0x00524000: __DATA_CONST.__got
ALLOC LOAD DATA HAS_CONTENTS
 [11]     0x100524380->0x10052d4a8 at 0x00524380: __DATA_CONST.__const
ALLOC LOAD DATA HAS_CONTENTS
 [12]     0x10052d4a8->0x10052dee8 at 0x0052d4a8:
__DATA_CONST.__cfstring ALLOC LOAD DATA HAS_CONTENTS
 [13]     0x10052dee8->0x10052df50 at 0x0052dee8:
__DATA_CONST.__objc_classlist ALLOC LOAD DATA HAS_CONTENTS
 [14]     0x10052df50->0x10052df60 at 0x0052df50:
__DATA_CONST.__objc_catlist ALLOC LOAD DATA HAS_CONTENTS
 [15]     0x10052df60->0x10052df88 at 0x0052df60:
__DATA_CONST.__objc_protolist ALLOC LOAD DATA HAS_CONTENTS
 [16]     0x10052df88->0x10052df90 at 0x0052df88:
__DATA_CONST.__objc_imageinfo ALLOC LOAD DATA HAS_CONTENTS
 [17]     0x100530000->0x100531938 at 0x00530000:
__DATA.__la_symbol_ptr ALLOC LOAD DATA HAS_CONTENTS
 [18]     0x100531938->0x100535958 at 0x00531938: __DATA.__objc_const
ALLOC LOAD DATA HAS_CONTENTS
 [19]     0x100535958->0x100536ce0 at 0x00535958:
__DATA.__objc_selrefs ALLOC LOAD DATA HAS_CONTENTS
 [20]     0x100536ce0->0x100536f20 at 0x00536ce0:
__DATA.__objc_classrefs ALLOC LOAD DATA HAS_CONTENTS
 [21]     0x100536f20->0x100536f78 at 0x00536f20:
__DATA.__objc_superrefs ALLOC LOAD DATA HAS_CONTENTS
 [22]     0x100536f78->0x1005371b0 at 0x00536f78: __DATA.__objc_ivar
ALLOC LOAD DATA HAS_CONTENTS
 [23]     0x1005371b0->0x1005375c0 at 0x005371b0: __DATA.__objc_data
ALLOC LOAD DATA HAS_CONTENTS
 [24]     0x1005375c0->0x10054acd0 at 0x005375c0: __DATA.subrs ALLOC
LOAD DATA HAS_CONTENTS
 [25]     0x10054acd0->0x100aed21c at 0x0054acd0: .data ALLOC LOAD
DATA HAS_CONTENTS
 [26]     0x100aed220->0x100b32b74 at 0x00000000: .bss ALLOC
 [27]     0x100b32b80->0x100b9ba78 at 0x00000000: __DATA.__common ALLOC
(gdb)


In GNU Emacs 30.0.50 (build 3, x86_64-apple-darwin21.6.0, NS
 appkit-2113.60 Version 12.6.9 (Build 21G726)) of 2023-09-18 built on
 MY-MacBook-Pro
Repository revision: 861f9cb78370e2b78f852e5ccde9b63c94486ca8
Repository branch: master
Windowing system distributor 'Apple', version 10.3.2113
System Description:  macOS 12.6.9

Configured using:
 'configure --enable-checking=yes,glyphs --enable-check-lisp-object-type
 'CFLAGS=-O0 -g3''

Configured features:
ACL GIF GMP GNUTLS JPEG JSON LCMS2 LIBXML2 MODULES NOTIFY KQUEUE NS
PDUMPER PNG SQLITE3 THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER WEBP
XIM ZLIB

Important settings:
  value of $LC_COLLATE: C
  value of $LC_CTYPE: sv_SE.UTF-8
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Message

Minor modes in effect:
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  transient-mark-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
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  abbrev-mode: t

Load-path shadows:
/Users/skangas/.emacs.d/elpa/elsa-20230621.1005/Elsafile hides
/Users/skangas/.emacs.d/elpa/trinary-20230301.2044/Elsafile
/Users/skangas/.emacs.d/elpa/transient-20230812.2142/transient hides
/Users/skangas/wip/emacs/lisp/transient
/Users/skangas/.emacs.d/elpa/ef-themes-1.3.0/theme-loaddefs hides
/Users/skangas/wip/emacs/lisp/theme-loaddefs

Features:
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Memory information:
((conses 16 666326 475097) (symbols 48 43608 59) (strings 32 201523 17492)
 (string-bytes 1 5944970) (vectors 16 73529) (vector-slots 8 981609 158728)
 (floats 8 882 6143) (intervals 56 10864 472) (buffers 992 19))





^ permalink raw reply	[flat|nested] 22+ messages in thread
end of thread, other threads:[~2023-09-25  8:36 UTC | newest]

Thread overview: 22+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2023-09-19  8:47 bug#66098: Crash in itree.c on macOS with incomplete backtrace Stefan Kangas
2023-09-19  9:23 ` Robert Pluim
2023-09-19 10:09   ` Robert Pluim
2023-09-20  8:08     ` Paul Eggert
2023-09-20  8:22       ` Robert Pluim
2023-09-22 10:58   ` Stefan Kangas
2023-09-22 12:07     ` Robert Pluim
2023-09-23 13:02       ` Stefan Kangas
2023-09-25  8:36         ` Robert Pluim
2023-09-19 11:24 ` Eli Zaretskii
2023-09-22 10:51   ` Stefan Kangas
2023-09-22 12:36     ` Eli Zaretskii
2023-09-22 12:46       ` Robert Pluim
2023-09-23 11:56         ` Stefan Kangas
2023-09-23 12:42           ` Eli Zaretskii
2023-09-24 10:55             ` Stefan Kangas
2023-09-24 12:10               ` Eli Zaretskii
2023-09-24 12:25                 ` Stefan Kangas
2023-09-24 21:01                   ` Stefan Kangas
2023-09-25  3:38                     ` Gerd Möllmann
2023-09-19 11:42 ` Gerd Möllmann
2023-09-19 12:21   ` Gerd Möllmann

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