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dump/win_dump: fix use after free of err 

It's possible that we'll try to set err twice (or more). It's bad, it
will crash.

Instead, use warn_report().

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200324153630.11882-4-vsementsov@virtuozzo.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Vladimir Sementsov-Ogievskiy 2020-03-24 18:36:27 +03:00 committed by Markus Armbruster
parent d1d3a99795
commit b0e709503c
1 changed files with 1 additions and 3 deletions
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4
dump/win_dump.c
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@ -304,13 +304,11 @@ static void restore_context(WinDumpHeader64 *h,
struct saved_context *saved_ctx)
{
int i;
Error *err = NULL;
for (i = 0; i < h->NumberProcessors; i++) {
if (cpu_memory_rw_debug(first_cpu, saved_ctx[i].addr,
(uint8_t *)&saved_ctx[i].ctx, sizeof(WinContext), 1)) {
error_setg(&err, "win-dump: failed to restore CPU #%d context", i);
warn_report_err(err);
warn_report("win-dump: failed to restore CPU #%d context", i);
}
}
}