Xiubo Li fa99677342 ceph: fix potential mdsc use-after-free crash ... Make sure the delayed work stopped before releasing the resources. cancel_delayed_work_sync() will only guarantee that the work finishes executing if the work is already in the ->worklist. That means after the cancel_delayed_work_sync() returns, it will leave the work requeued if it was rearmed at the end. That can lead to a use after free once the work struct is freed. Fix it by flushing the delayed work instead of trying to cancel it, and ensure that the work doesn't rearm if the mdsc is stopping. URL: https://tracker.ceph.com/issues/46293 Signed-off-by: Xiubo Li <xiubli@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>		2020-08-03 11:05:21 +02:00
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acl.c	ceph: add caps perf metric for each superblock	2020-06-01 13:22:51 +02:00
addr.c	ceph: add read/write latency metric support	2020-06-01 13:22:51 +02:00
cache.c	ceph: replace zero-length array with flexible-array member	2020-03-30 12:42:40 +02:00
cache.h	libceph, rbd, ceph: convert to use the new mount API	2019-11-27 22:28:37 +01:00
caps.c	ceph: add global total_caps to count the mdsc's total caps number	2020-08-03 11:05:15 +02:00
ceph_frag.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
debugfs.c	ceph: add global total_caps to count the mdsc's total caps number	2020-08-03 11:05:15 +02:00
dir.c	ceph: allow rename operation under different quota realms	2020-06-01 13:22:53 +02:00
export.c	ceph: don't return -ESTALE if there's still an open file	2020-06-01 13:22:53 +02:00
file.c	ceph: add read/write latency metric support	2020-06-01 13:22:51 +02:00
inode.c	ceph: add caps perf metric for each superblock	2020-06-01 13:22:51 +02:00
io.c	ceph: add buffered/direct exclusionary locking for reads and writes	2019-09-16 12:06:25 +02:00
io.h	ceph: add buffered/direct exclusionary locking for reads and writes	2019-09-16 12:06:25 +02:00
ioctl.c	ceph: consider inode's last read/write when calculating wanted caps	2020-03-30 12:42:42 +02:00
ioctl.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Kconfig	ceph: add selinux support	2019-07-08 14:01:42 +02:00
locks.c	ceph: check if file lock exists before sending unlock request	2020-03-30 12:42:40 +02:00
Makefile	ceph: add dentry lease metric support	2020-06-01 13:22:51 +02:00
mds_client.c	ceph: fix potential mdsc use-after-free crash	2020-08-03 11:05:21 +02:00
mds_client.h	ceph: add check_session_state() helper and make it global	2020-08-03 11:05:10 +02:00
mdsmap.c	ceph: add possible_max_rank and make the code more readable	2020-01-27 16:53:40 +01:00
metric.c	ceph: add global total_caps to count the mdsc's total caps number	2020-08-03 11:05:15 +02:00
metric.h	ceph: add global total_caps to count the mdsc's total caps number	2020-08-03 11:05:15 +02:00
quota.c	ceph: allow rename operation under different quota realms	2020-06-01 13:22:53 +02:00
snap.c	ceph: fix memory leak in ceph_cleanup_snapid_map()	2020-03-23 13:07:08 +01:00
strings.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
super.c	ceph: perform asynchronous unlink if we have sufficient caps	2020-03-30 12:42:42 +02:00
super.h	ceph: skip checking caps when session reconnecting and releasing reqs	2020-06-01 13:22:53 +02:00
util.c	ceph: move net/ceph/ceph_fs.c to fs/ceph/util.c	2020-01-27 16:53:40 +01:00
xattr.c	ceph: add caps perf metric for each superblock	2020-06-01 13:22:51 +02:00