From: Dexuan Cui decui@microsoft.com
commit ec97e112985c2581ee61854a4b74f080f6cdfc2c upstream.
Commit 572086325ce9 ("Drivers: hv: vmbus: Cleanup synic memory free path") says "Any memory allocations that succeeded will be freed when the caller cleans up by calling hv_synic_free()", but if the get_zeroed_page() in hv_synic_alloc() fails, currently hv_synic_free() is not really called in vmbus_bus_init(), consequently there will be a memory leak, e.g. hv_context.hv_numa_map is not freed in the error path. Fix this by updating the goto labels.
Cc: stable@kernel.org Signed-off-by: Dexuan Cui decui@microsoft.com Fixes: 4df4cb9e99f8 ("x86/hyperv: Initialize clockevents earlier in CPU onlining") Reviewed-by: Michael Kelley mikelley@microsoft.com Link: https://lore.kernel.org/r/20230504224155.10484-1-decui@microsoft.com Signed-off-by: Wei Liu wei.liu@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/hv/vmbus_drv.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
--- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -1525,7 +1525,7 @@ static int vmbus_bus_init(void) ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "hyperv/vmbus:online", hv_synic_init, hv_synic_cleanup); if (ret < 0) - goto err_cpuhp; + goto err_alloc; hyperv_cpuhp_online = ret;
ret = vmbus_connect(); @@ -1577,9 +1577,8 @@ static int vmbus_bus_init(void)
err_connect: cpuhp_remove_state(hyperv_cpuhp_online); -err_cpuhp: - hv_synic_free(); err_alloc: + hv_synic_free(); if (vmbus_irq == -1) { hv_remove_vmbus_handler(); } else {