Unverified Commit 38e0e8fe authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!5144 arm64/mpam: Fix use-after-free when deleting resource groups 

Merge Pull Request from: @ci-robot 
 
PR sync from: Zeng Heng <zengheng4@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/C3C6YJVDPT7VVDZDVIS4XIJWUGUY7K5A/ 
 
https://gitee.com/openeuler/kernel/issues/I97KAV 
 
Link:https://gitee.com/openeuler/kernel/pulls/5144

 

Reviewed-by: default avatarWang ShaoBo <bobo.shaobowang@huawei.com>
Reviewed-by: default avatarWei Li <liwei391@huawei.com>
Reviewed-by: default avatarzhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: default avatarJialin Zhang <zhangjialin11@huawei.com>
parents 2ad5d68f 306a6db1

fs/resctrlfs.c

+8 −2
Original line number Diff line number Diff line
@@ -485,6 +485,9 @@ static void free_all_child_rdtgrp(struct resctrl_group *rdtgrp) 
		/* rmid may not be used */

		rmid_free(sentry->mon.rmid);

		list_del(&sentry->mon.crdtgrp_list);

		if (atomic_read(&sentry->waitcount) != 0)

			sentry->flags = RDT_DELETED;

		else

			rdtgroup_remove(sentry);

	}

}
@@ -519,6 +522,9 @@ static void rmdir_all_sub(void) 


		kernfs_remove(rdtgrp->kn);

		list_del(&rdtgrp->resctrl_group_list);

		if (atomic_read(&rdtgrp->waitcount) != 0)

			rdtgrp->flags = RDT_DELETED;

		else

			rdtgroup_remove(rdtgrp);

	}

	/* Notify online CPUs to update per cpu storage and PQR_ASSOC MSR */