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HV: hv_balloon: fix memory leak with using debugfs_lookup()

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When calling debugfs_lookup() the result must have dput() called on it,
otherwise the memory will leak over time.  To make things simpler, just
call debugfs_lookup_and_remove() instead which handles all of the logic
at once.

Cc: "K. Y. Srinivasan" <[email protected]>
Cc: Haiyang Zhang <[email protected]>
Cc: Wei Liu <[email protected]>
Cc: Dexuan Cui <[email protected]>
Fixes: d180e0a1be ("Drivers: hv: Create debugfs file with hyper-v balloon usage information")
Cc: stable <[email protected]>
Reviewed-by: Michael Kelley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Greg Kroah-Hartman
2023-02-03 07:45:18 +01:00
parent 9944028659
commit 6dfb077142
1 changed files with 1 additions and 1 deletions
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drivers/hv/hv_balloon.c
+1 -1
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@@ -1963,7 +1963,7 @@ static void hv_balloon_debugfs_init(struct hv_dynmem_device *b)
static void hv_balloon_debugfs_exit(struct hv_dynmem_device *b)
{
debugfs_remove(debugfs_lookup("hv-balloon", NULL));
debugfs_lookup_and_remove("hv-balloon", NULL);
}
#else