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| author | Dexuan Cui <decui@microsoft.com> | 2023-05-04 15:41:55 -0700 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2023-05-08 17:37:20 +0000 |
| commit | ec97e112985c2581ee61854a4b74f080f6cdfc2c (patch) | |
| tree | e74327c90dfdcd86f257d9dc6efa6838e6e674c6 /drivers/hv | |
| parent | cb6aeeb69af06b09e687fbef4da36a81c36b4994 (diff) | |
| download | linux-ec97e112985c2581ee61854a4b74f080f6cdfc2c.tar.gz linux-ec97e112985c2581ee61854a4b74f080f6cdfc2c.tar.bz2 linux-ec97e112985c2581ee61854a4b74f080f6cdfc2c.zip | |
Drivers: hv: vmbus: Call hv_synic_free() if hv_synic_alloc() fails
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>
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 1c65a6dfb9fa..67f95a29aeca 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -1372,7 +1372,7 @@ 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(); @@ -1392,9 +1392,8 @@ 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 { |