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bug#61960: 30.0.50; Unexec build reliably crashes during loadup
From: |
Konstantin Kharlamov |
Subject: |
bug#61960: 30.0.50; Unexec build reliably crashes during loadup |
Date: |
Sat, 04 Mar 2023 23:26:31 +0300 |
User-agent: |
Evolution 3.46.4 |
On Sat, 2023-03-04 at 23:05 +0300, Konstantin Kharlamov wrote:
> So, I kind of reproduced the problem… But it doesn't happen reliably.
>
> I reconfigured the build with the exact flags, ran `make clean` and `make`,
> and
> it did fail with a `free(): invalid pointer`.
>
> However, entering the `src/` dir and running `./temacs --batch -l loadup --
> temacs=bootstrap` doesn't reproduce crash, it finishes successfully.
>
> Gotta figure out under what exactly conditions crash happens.
UPD: did find the command that crashes:
./temacs --__aslr-disabled -batch -l loadup --temacs=dump
I think this command is run internally by `temacs`. I found it by running a
bpftrace command alongside the build:
sudo bpftrace -e 'tracepoint:syscalls:sys_enter_exec*{ printf("pid:
%d, comm: %s, args: ", pid, comm); join(args->argv); }'
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Eli Zaretskii, 2023/03/04
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Konstantin Kharlamov, 2023/03/04
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Konstantin Kharlamov, 2023/03/04
- Message not available
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Konstantin Kharlamov, 2023/03/04
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Konstantin Kharlamov, 2023/03/04
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Konstantin Kharlamov, 2023/03/04
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Po Lu, 2023/03/04
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Eli Zaretskii, 2023/03/05
- Message not available
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Eli Zaretskii, 2023/03/06
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Andrea Corallo, 2023/03/07
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Eli Zaretskii, 2023/03/07
- bug#61960: 30.0.50; Unexec build reliably crashes during loadup, Po Lu, 2023/03/11