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| author | K. Y. Srinivasan <kys@microsoft.com> | 2015-02-27 11:26:04 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-01 19:30:08 -0800 |
| commit | 40384e4bbeb9f2651fe9bffc0062d9f31ef625bf (patch) | |
| tree | cf93c3c72e813f1be0ece2f6a42a6f1fece1b625 /drivers/hv | |
| parent | b057b3ad16e1c6e21e234cd7f5c61c525da97f17 (diff) | |
| download | linux-40384e4bbeb9f2651fe9bffc0062d9f31ef625bf.tar.gz linux-40384e4bbeb9f2651fe9bffc0062d9f31ef625bf.tar.bz2 linux-40384e4bbeb9f2651fe9bffc0062d9f31ef625bf.zip | |
Drivers: hv: vmbus: Fix a bug in the error path in vmbus_open()
Correctly rollback state if the failure occurs after we have handed over
the ownership of the buffer to the host.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv')
| -rw-r--r-- | drivers/hv/channel.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index f6879950e131..bf0cf8f3bcaf 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -137,7 +137,7 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size, GFP_KERNEL); if (!open_info) { err = -ENOMEM; - goto error0; + goto error_gpadl; } init_completion(&open_info->waitevent); @@ -153,7 +153,7 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size, if (userdatalen > MAX_USER_DEFINED_BYTES) { err = -EINVAL; - goto error0; + goto error_gpadl; } if (userdatalen) @@ -197,6 +197,9 @@ error1: list_del(&open_info->msglistentry); spin_unlock_irqrestore(&vmbus_connection.channelmsg_lock, flags); +error_gpadl: + vmbus_teardown_gpadl(newchannel, newchannel->ringbuffer_gpadlhandle); + error0: free_pages((unsigned long)out, get_order(send_ringbuffer_size + recv_ringbuffer_size)); |