[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#29066: 26.0.90; crash in gc involving buffer local symbols
From: |
Andreas Schwab |
Subject: |
bug#29066: 26.0.90; crash in gc involving buffer local symbols |
Date: |
Tue, 31 Oct 2017 23:00:10 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux) |
On Okt 31 2017, Eli Zaretskii <eliz@gnu.org> wrote:
>> From: Andreas Schwab <schwab@linux-m68k.org>
>> Cc: vgatien-baron@janestreet.com, 29066@debbugs.gnu.org,
>> mshinwell@janestreet.com
>> Date: Tue, 31 Oct 2017 22:03:26 +0100
>>
>> >> A symbol on the symbol_free_list is a freed symbol, not available for
>> >> use.
>> >
>> > I guess you are saying that sweep_symbols has a bug? Because it hits
>> > this "freed" symbol every GC, AFAICT.
>>
>> Since GC is special, it needs to do special things.
>
> But the crash due to double-free did happen as part of GC doing those
> "special things".
That's why it helps to clear the pointer to the freed memory, instead of
leaving it dangling.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
- bug#29066: 26.0.90; crash in gc involving buffer local symbols, (continued)
- bug#29066: 26.0.90; crash in gc involving buffer local symbols, Valentin Gatien-Baron, 2017/10/31
- bug#29066: 26.0.90; crash in gc involving buffer local symbols, Eli Zaretskii, 2017/10/31
- bug#29066: 26.0.90; crash in gc involving buffer local symbols, Valentin Gatien-Baron, 2017/10/31
- bug#29066: 26.0.90; crash in gc involving buffer local symbols, Eli Zaretskii, 2017/10/31
- bug#29066: 26.0.90; crash in gc involving buffer local symbols, Valentin Gatien-Baron, 2017/10/31
- bug#29066: 26.0.90; crash in gc involving buffer local symbols, Eli Zaretskii, 2017/10/31
- bug#29066: 26.0.90; crash in gc involving buffer local symbols, Andreas Schwab, 2017/10/31
- bug#29066: 26.0.90; crash in gc involving buffer local symbols, Eli Zaretskii, 2017/10/31
- bug#29066: 26.0.90; crash in gc involving buffer local symbols, Andreas Schwab, 2017/10/31
- bug#29066: 26.0.90; crash in gc involving buffer local symbols, Eli Zaretskii, 2017/10/31
- bug#29066: 26.0.90; crash in gc involving buffer local symbols,
Andreas Schwab <=