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block: Take graph rdlock in bdrv_inactivate_all() 

The function reads the parents list, so it needs to hold the graph lock.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20230929145157.45443-4-kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2023-09-29 16:51:38 +02:00
parent e84c07bc73
commit 0e6bad1f21
1 changed files with 4 additions and 3 deletions
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7
block.c
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@ -6976,7 +6976,8 @@ void bdrv_activate_all(Error **errp)
}
}
static bool bdrv_has_bds_parent(BlockDriverState *bs, bool only_active)
static bool GRAPH_RDLOCK
bdrv_has_bds_parent(BlockDriverState *bs, bool only_active)
{
BdrvChild *parent;
GLOBAL_STATE_CODE();
@ -6993,14 +6994,13 @@ static bool bdrv_has_bds_parent(BlockDriverState *bs, bool only_active)
return false;
}
static int bdrv_inactivate_recurse(BlockDriverState *bs)
static int GRAPH_RDLOCK bdrv_inactivate_recurse(BlockDriverState *bs)
{
BdrvChild *child, *parent;
int ret;
uint64_t cumulative_perms, cumulative_shared_perms;
GLOBAL_STATE_CODE();
GRAPH_RDLOCK_GUARD_MAINLOOP();
if (!bs->drv) {
return -ENOMEDIUM;
@ -7066,6 +7066,7 @@ int bdrv_inactivate_all(void)
GSList *aio_ctxs = NULL, *ctx;
GLOBAL_STATE_CODE();
GRAPH_RDLOCK_GUARD_MAINLOOP();
for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
AioContext *aio_context = bdrv_get_aio_context(bs);