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| author | Dexuan Cui <decui@microsoft.com> | 2023-05-05 01:41:55 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-06-28 12:12:23 +0300 |
| commit | 191cb913293a6ceb65433c2c6748f5800ebb120d (patch) | |
| tree | 8e2070bedaa015c1e7e59c09ccbb7160792a59a5 /drivers/hv | |
| parent | 4f7e702b74f7a44fe6492c8dac78c668297942fe (diff) | |
| download | linux-191cb913293a6ceb65433c2c6748f5800ebb120d.tar.xz | |
Drivers: hv: vmbus: Call hv_synic_free() if hv_synic_alloc() fails
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>
Diffstat (limited to 'drivers/hv')
| -rw-r--r-- | drivers/hv/vmbus_drv.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index e592c481f7ae..b03cb7ae7fd3 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -1504,7 +1504,7 @@ 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(); @@ -1555,9 +1555,8 @@ 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 { |