| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.10 41/84] Drivers: hv: vmbus: Release cpu lock in error case | Date | Mon, 20 Jun 2022 14:51:04 +0200 |
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From: Saurabh Sengar <ssengar@linux.microsoft.com>
[ Upstream commit 656c5ba50b7172a0ea25dc1b37606bd51d01fe8d ]
In case of invalid sub channel, release cpu lock before returning.
Fixes: a949e86c0d780 ("Drivers: hv: vmbus: Resolve race between init_vp_index() and CPU hotplug") Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/1654794996-13244-1-git-send-email-ssengar@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/hv/channel_mgmt.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c index 5dbb949b1afd..10188b1a6a08 100644 --- a/drivers/hv/channel_mgmt.c +++ b/drivers/hv/channel_mgmt.c @@ -606,6 +606,7 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel) */ if (newchannel->offermsg.offer.sub_channel_index == 0) { mutex_unlock(&vmbus_connection.channel_mutex); + cpus_read_unlock(); /* * Don't call free_channel(), because newchannel->kobj * is not initialized yet. -- 2.35.1
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