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From 3272771d5dd899876eb8d7ea3af3ed1d2b2472d2 Mon Sep 17 00:00:00 2001
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From: Kevin Wolf <kwolf@redhat.com>
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Date: Wed, 10 Sep 2014 11:06:09 +0200
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Subject: [PATCH 10/12] ide: Fix segfault when flushing a device that doesn't exist
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Message-id: <1410347169-4368-4-git-send-email-kwolf@redhat.com>
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Patchwork-id: 60955
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O-Subject: [RHEL-7.1 qemu-kvm PATCH 3/3] ide: Fix segfault when flushing a device that doesn't exist
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Bugzilla: 1123372
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: Fam Zheng <famz@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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(cherry picked from commit f7f3ff1da0c451befc8d32f977f9c352d1303f40)
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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hw/ide/core.c | 4 +++-
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tests/ide-test.c | 14 ++++++++++++++
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2 files changed, 17 insertions(+), 1 deletions(-)
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diff --git a/hw/ide/core.c b/hw/ide/core.c
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index 0313250..a2947a9 100644
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--- a/hw/ide/core.c
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+++ b/hw/ide/core.c
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@@ -810,7 +810,9 @@ static void ide_flush_cb(void *opaque, int ret)
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}
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}
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- bdrv_acct_done(s->bs, &s->acct);
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+ if (s->bs) {
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+ bdrv_acct_done(s->bs, &s->acct);
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+ }
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s->status = READY_STAT | SEEK_STAT;
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ide_async_cmd_done(s);
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ide_set_irq(s->bus);
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diff --git a/tests/ide-test.c b/tests/ide-test.c
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index 739d2bf..51f9239 100644
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--- a/tests/ide-test.c
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+++ b/tests/ide-test.c
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@@ -462,6 +462,19 @@ static void test_flush(void)
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ide_test_quit();
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}
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+static void test_flush_nodev(void)
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+{
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+ ide_test_start("");
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+
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+ /* FLUSH CACHE command on device 0*/
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+ outb(IDE_BASE + reg_device, 0);
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+ outb(IDE_BASE + reg_command, CMD_FLUSH_CACHE);
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+
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+ /* Just testing that qemu doesn't crash... */
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+
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+ ide_test_quit();
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+}
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+
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int main(int argc, char **argv)
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{
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const char *arch = qtest_get_arch();
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@@ -493,6 +506,7 @@ int main(int argc, char **argv)
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qtest_add_func("/ide/bmdma/teardown", test_bmdma_teardown);
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qtest_add_func("/ide/flush", test_flush);
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+ qtest_add_func("/ide/flush_nodev", test_flush_nodev);
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ret = g_test_run();
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--
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1.7.1
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