diff options
| author | Tony Luck <tony.luck@intel.com> | 2026-07-06 15:46:21 -0700 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2026-07-06 17:42:38 -0700 |
| commit | ca0676ae2e1a23ac3e858224fc630b99f9e216ea (patch) | |
| tree | 8db83e996edbb7d88392e97819e7ddcda6337b5d | |
| parent | 8cdeaa50eae8dad34885515f62559ee83e7e8dda (diff) | |
fs/resctrl: Free mon_data structures on rdt_get_tree() failure
If mkdir_mondata_all() or a subsequent call in rdt_get_tree() fails, the
mon_data structures allocated by mon_get_kn_priv() are leaked.
Add mon_put_kn_priv() to the out_mongrp error path to free the mon_data
structures.
Fixes: 2a6566038544 ("x86/resctrl: Expand the width of domid by replacing mon_data_bits")
Closes: https://lore.kernel.org/lkml/5d38c1fb-8f91-472b-8897-24b2f50c772b@intel.com/
Reported-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Chen Yu <yu.c.chen@intel.com>
Reviewed-by: Ben Horgan <ben.horgan@arm.com>
Cc: <stable@kernel.org>
Link: https://patch.msgid.link/433623b7e3316ffd52323255d1aa4f156ad97cb1.1783377598.git.reinette.chatre@intel.com
| -rw-r--r-- | fs/resctrl/rdtgroup.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/resctrl/rdtgroup.c b/fs/resctrl/rdtgroup.c index af2cbab14497..1312b52c7f7b 100644 --- a/fs/resctrl/rdtgroup.c +++ b/fs/resctrl/rdtgroup.c @@ -74,6 +74,8 @@ static int rdtgroup_setup_root(struct rdt_fs_context *ctx); static void rdtgroup_destroy_root(void); +static void mon_put_kn_priv(void); + struct dentry *debugfs_resctrl; /* @@ -2893,6 +2895,7 @@ out_mondata: kernfs_remove(kn_mondata); out_mongrp: if (resctrl_arch_mon_capable()) { + mon_put_kn_priv(); rdtgroup_unassign_cntrs(&rdtgroup_default); kernfs_remove(kn_mongrp); } |