[PATCH dpdk] log: fix double free on cleanup

[David Marchand]

On Fri, Nov 29, 2024 at 6:01 PM Stephen Hemminger
<stephen at networkplumber.org> wrote:
> On Fri, 29 Nov 2024 17:10:14 +0100
> Robin Jarry <rjarry at redhat.com> wrote:
>
> > Fix the following crash when closing a log file after rte_eal_cleanup():
> >
> >     double free or corruption (!prev)
> >
> >     Thread 1 "grout" received signal SIGABRT, Aborted.
> >     __pthread_kill_implementation (threadid=<optimized out>,
> >     signo=signo at entry=6, no_tid=no_tid at entry=0) at pthread_kill.c:44
> >     ...
> >     #10 _IO_new_fclose (fp=0xb63090) at iofclose.c:74
> >     #11 0x000000000049c04e in dpdk_fini () at ../main/dpdk.c:204
> >     #12 0x0000000000402ab8 in main (...) at ../main/main.c:217
> >     (gdb) up 11
> >     #11 0x000000000049c04e in dpdk_fini () at ../main/dpdk.c:204
> >     202             rte_eal_cleanup();
> >     203             if (log_stream != NULL)
> >     204                     fclose(log_stream);
> >
> > When the application has passed a custom file via rte_openlog_stream()
> > DPDK should not call fclose() on it.
> >
> > Add an internal is_internal_file field to track whether the file has
> > been allocated by DPDK (syslog or journald) to determine if it should be
> > closed or not.
> >
> > Fixes: 985130369be3 ("log: rework syslog handling")

Added Cc: stable for 24.11 LTS.

> > Signed-off-by: Robin Jarry <rjarry at redhat.com>
> Reviewed-by: Stephen Hemminger <stephen at networkplumber.org>

Applied, thanks for the fix Robin.


-- 
David Marchand