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Trond Myklebust e68b60ae29 SUNRPC: Ensure we flush any closed sockets before xs_xprt_free() 
commit f00432063d upstream.

We must ensure that all sockets are closed before we call xprt_free()
and release the reference to the net namespace. The problem is that
calling fput() will defer closing the socket until delayed_fput() gets
called.
Let's fix the situation by allowing rpciod and the transport teardown
code (which runs on the system wq) to call __fput_sync(), and directly
close the socket.

Reported-by: Felix Fu <foyjog@gmail.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Fixes: a73881c96d ("SUNRPC: Fix an Oops in udp_poll()")
Cc: stable@vger.kernel.org # 5.1.x: 3be232f11a: SUNRPC: Prevent immediate close+reconnect
Cc: stable@vger.kernel.org # 5.1.x: 89f42494f9: SUNRPC: Don't call connect() more than once on a TCP socket
Cc: stable@vger.kernel.org # 5.1.x
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Meena Shanmugam <meenashanmugam@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-05-18 10:23:48 +02:00
..
9p 9p: only copy valid iattrs in 9P2000.L setattr implementation 2022-01-20 09:17:50 +01:00
adfs Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-10-24 12:26:05 -07:00
affs fs/affs: release old buffer head on error path 2021-03-04 11:38:37 +01:00
afs afs: Fix updating of i_blocks on file/dir extension 2021-09-30 10:11:01 +02:00
autofs autofs: harden ioctl table 2020-10-16 11:11:22 -07:00
befs [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
bfs bfs: don't use WARNING: string when it's just info. 2021-01-06 14:56:52 +01:00
btrfs btrfs: always log symlinks in full mode 2022-05-12 12:25:43 +02:00
cachefiles fs/cachefiles: Remove wait_bit_key layout dependency 2021-03-30 14:32:07 +02:00
ceph ceph: fix setting of xattrs on async created inodes 2022-05-18 10:23:47 +02:00
cifs cifs: destage any unwritten data to the server before calling copychunk_write 2022-05-09 09:05:06 +02:00
coda
configfs configfs: fix a race in configfs_{,un}register_subsystem() 2022-03-02 11:42:52 +01:00
cramfs [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
crypto fscrypt: allow 256-bit master keys with AES-256-XTS 2021-11-18 14:03:54 +01:00
debugfs debugfs: lockdown: Allow reading debugfs files that are not world readable 2022-01-27 10:54:02 +01:00
devpts fsnotify: fix fsnotify hooks in pseudo filesystems 2022-02-01 17:25:39 +01:00
dlm fs: dlm: filter user dlm messages for kernel locks 2022-01-27 10:54:10 +01:00
ecryptfs Revert "ecryptfs: replace BUG_ON with error handling code" 2021-05-26 12:06:55 +02:00
efivarfs efivarfs: revert "fix memory leak in efivarfs_create()" 2020-11-25 16:55:02 +01:00
efs [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
erofs erofs: fix deadlock when shrink erofs slab 2021-12-01 09:19:05 +01:00
exfat exfat: avoid incorrectly releasing for root inode 2022-03-28 09:57:07 +02:00
exportfs
ext2 ext2: correct max file size computing 2022-04-08 14:40:18 +02:00
ext4 ext4: fix bug_on in start_this_handle during umount filesystem 2022-05-09 09:05:06 +02:00
f2fs f2fs: compress: fix to print raw data size in error path of lz4 decompression 2022-04-08 14:40:33 +02:00
fat [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
freevxfs
fscache fscache: Fix cookie key hashing 2021-09-18 13:40:15 +02:00
fuse fuse: fix pipe buffer lifetime for direct_io 2022-03-16 14:16:01 +01:00
gfs2 gfs2: Fix filesystem block deallocation for short writes 2022-05-18 10:23:45 +02:00
hfs hfs: add lock nesting notation to hfs_find_init 2021-07-31 08:16:12 +02:00
hfsplus hfsplus: prevent corruption in shrinking truncate 2021-05-19 10:13:10 +02:00
hostfs hostfs: fix memory handling in follow_link() 2021-04-14 08:42:06 +02:00
hpfs [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
hugetlbfs mm, hugetlb: allow for "high" userspace addresses 2022-04-27 13:53:54 +02:00
iomap treewide: Change list_sort to use const pointers 2021-09-30 10:11:04 +02:00
isofs isofs: Fix out of bound access for corrupted isofs image 2021-11-12 14:58:33 +01:00
jbd2 jbd2: fix a potential race while discarding reserved buffers after an abort 2022-04-27 13:53:57 +02:00
jffs2 jffs2: fix memory leak in jffs2_scan_medium 2022-04-08 14:39:52 +02:00
jfs jfs: prevent NULL deref in diFree 2022-04-13 21:01:03 +02:00
kernfs kernfs: wire up ->splice_read and ->splice_write 2021-01-27 11:55:29 +01:00
lockd lockd: lockd server-side shouldn't set fl_ops 2021-09-18 13:40:30 +02:00
minix minix: fix bug when opening a file with O_DIRECT 2022-04-13 21:01:01 +02:00
nfs nfs: fix broken handling of the softreval mount option 2022-05-18 10:23:43 +02:00
nfs_common nfs_common: need lock during iterate through the list 2020-12-30 11:53:45 +01:00
nfsd NFSD: Fix nfsd_breaker_owns_lease() return values 2022-04-08 14:40:33 +02:00
nilfs2 nilfs2: fix memory leak in nilfs_sysfs_delete_snapshot_group 2021-09-26 14:09:01 +02:00
nls
notify fanotify: Fix stale file descriptor in copy_event_to_user() 2022-02-05 12:37:56 +01:00
ntfs ntfs: add sanity check on allocation size 2022-04-08 14:40:33 +02:00
ocfs2 ocfs2: fix crash when initialize filecheck kobj fails 2022-03-23 09:13:27 +01:00
omfs fs: omfs: use kmemdup() rather than kmalloc+memcpy 2020-09-22 23:39:45 -04:00
openpromfs
orangefs orangefs: Fix the size of a memory allocation in orangefs_bufmap_alloc() 2022-01-20 09:17:50 +01:00
overlayfs ovl: fix warning in ovl_create_real() 2021-12-22 09:30:58 +01:00
proc arm: remove CONFIG_ARCH_HAS_HOLES_MEMORYMODEL 2022-05-15 20:00:09 +02:00
pstore pstore: Don't use semaphores in always-atomic-context code 2022-04-08 14:39:56 +02:00
qnx4 qnx4: work around gcc false positive warning bug 2021-09-30 10:11:08 +02:00
qnx6 [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
quota quota: make dquot_quota_sync return errors from ->sync_fs 2022-02-23 12:00:59 +01:00
ramfs ramfs: fix nommu mmap with gaps in the page cache 2020-10-16 11:11:22 -07:00
reiserfs reiserfs: check directory items on read from disk 2021-08-12 13:22:19 +02:00
romfs Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-10-24 12:26:05 -07:00
squashfs squashfs: fix divide error in calculate_skip() 2021-05-19 10:13:10 +02:00
sysfs sysfs: Add sysfs_emit and sysfs_emit_at to format sysfs output 2020-10-02 12:02:30 +02:00
sysv [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
tracefs tracefs: Set the group ownership in apply_options() not parse_options() 2022-03-02 11:42:54 +01:00
ubifs ubifs: Rectify space amount budget for mkdir/tmpfile operations 2022-04-13 21:00:53 +02:00
udf udf: Fix NULL ptr deref when converting from inline format 2022-02-01 17:25:39 +01:00
ufs Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-10-24 12:26:05 -07:00
unicode unicode: Add utf8_casefold_hash 2020-09-10 14:03:31 -07:00
vboxsf vboxfs: fix broken legacy mount signature checking 2021-10-17 10:43:33 +02:00
verity fs-verity: fix signed integer overflow with i_size near S64_MAX 2021-10-06 15:55:46 +02:00
xfs xfs: map unwritten blocks in XFS_IOC_{ALLOC,FREE}SP just like fallocate 2022-01-11 15:25:01 +01:00
zonefs zonefs: Clear inode information flags on inode creation 2022-05-09 09:05:06 +02:00
aio.c aio: fix use-after-free due to missing POLLFREE handling 2021-12-14 11:32:40 +01:00
anon_inodes.c
attr.c
bad_inode.c
binfmt_aout.c
binfmt_elf.c coredump: Use the vma snapshot in fill_files_note 2022-04-08 14:40:45 +02:00
binfmt_elf_fdpic.c coredump: Snapshot the vmas in do_coredump 2022-04-08 14:40:44 +02:00
binfmt_em86.c
binfmt_flat.c binfmt_flat: revert "binfmt_flat: don't offset the data start" 2020-08-24 08:49:13 +10:00
binfmt_misc.c binfmt_misc: fix possible deadlock in bm_register_write 2021-03-17 17:06:35 +01:00
binfmt_script.c
block_dev.c block: fix a race between del_gendisk and BLKRRPART 2021-06-03 09:00:45 +02:00
buffer.c mm, memcg: rework remote charging API to support nesting 2020-10-18 09:27:09 -07:00
char_dev.c
compat_binfmt_elf.c
coredump.c coredump: Use the vma snapshot in fill_files_note 2022-04-08 14:40:45 +02:00
d_path.c fs: fix NULL dereference due to data race in prepend_path() 2020-10-14 14:54:45 -07:00
dax.c dax: fix ENOMEM handling in grab_mapping_entry() 2021-07-14 16:56:13 +02:00
dcache.c vfs: Use sequence counter with associated spinlock 2020-07-29 16:14:27 +02:00
dcookies.c
direct-io.c fs: direct-io: fix missing sdio->boundary 2021-04-14 08:41:58 +02:00
drop_caches.c
eventfd.c
eventpoll.c fs/epoll: restore waking from ep_done_scan() 2021-05-11 14:47:12 +02:00
exec.c exec: Force single empty string when argv is empty 2022-04-08 14:39:57 +02:00
fcntl.c fcntl: fix potential deadlock for &fasync_struct.fa_lock 2021-09-15 09:50:27 +02:00
fhandle.c
file.c fs: fix fd table size alignment properly 2022-04-08 14:40:30 +02:00
file_table.c SUNRPC: Ensure we flush any closed sockets before xs_xprt_free() 2022-05-18 10:23:48 +02:00
filesystems.c
fs-writeback.c writeback: fix obtain a reference to a freeing memcg css 2021-07-14 16:56:31 +02:00
fs_context.c memcg: charge fs_context and legacy_fs_context 2022-02-08 18:30:36 +01:00
fs_parser.c fs_parse: mark fs_param_bad_value() as static 2020-10-13 18:38:27 -07:00
fs_pin.c
fs_struct.c vfs: Use sequence counter with associated spinlock 2020-07-29 16:14:27 +02:00
fs_types.c
fsopen.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
init.c init: add an init_dup helper 2020-08-04 21:02:38 -04:00
inode.c fs: export an inode_update_time helper 2021-11-26 10:39:22 +01:00
internal.h cgroup1: fix leaked context root causing sporadic NULL deref in LTP 2021-07-31 08:16:11 +02:00
io-wq.c io-wq: fix wakeup race when adding new work 2021-09-18 13:40:06 +02:00
io-wq.h io_uring: always batch cancel in *cancel_files() 2021-02-13 13:54:56 +01:00
io_uring.c io_uring: fix race between timeout flush and removal 2022-04-13 21:01:08 +02:00
ioctl.c fs: remove ksys_ioctl 2020-07-31 08:16:01 +02:00
Kconfig tmpfs: disallow CONFIG_TMPFS_INODE64 on alpha 2021-02-17 11:02:21 +01:00
Kconfig.binfmt
kernel_read_file.c vfs: check fd has read access in kernel_read_file_from_fd() 2021-10-27 09:56:51 +02:00
libfs.c libfs: fix error cast of negative value in simple_attr_write() 2020-11-22 10:48:22 -08:00
locks.c Revert "nfsd4: a client's own opens needn't prevent delegations" 2021-03-20 10:43:44 +01:00
Makefile Refactored code for 5.10: 2020-10-23 11:33:41 -07:00
mbcache.c
mount.h
mpage.c
namei.c fsnotify: invalidate dcache before IN_DELETE event 2022-02-01 17:25:48 +01:00
namespace.c fs: warn about impending deprecation of mandatory locks 2021-08-26 08:35:57 -04:00
no-block.c
nsfs.c
open.c open: don't silently ignore unknown O-flags in openat2() 2021-07-14 16:55:59 +02:00
pipe.c watch_queue: Fix lack of barrier/sync/lock between post and read 2022-03-16 14:16:02 +01:00
pnode.c
pnode.h mount: fix mounting of detached mounts onto targets that reside on shared mounts 2021-03-17 17:06:13 +01:00
posix_acl.c
proc_namespace.c proc mountinfo: make splice available again 2020-12-30 11:54:02 +01:00
read_write.c Refactored code for 5.10: 2020-10-23 11:33:41 -07:00
readdir.c readdir: make sure to verify directory entry for legacy interfaces too 2021-04-21 13:00:54 +02:00
remap_range.c vfs: move the remap range helpers to remap_range.c 2020-10-15 09:48:49 -07:00
select.c select: Fix indefinitely sleeping task in poll_schedule_timeout() 2022-01-29 10:26:11 +01:00
seq_file.c seq_file: disallow extremely large seq buffer allocations 2021-07-20 16:05:59 +02:00
signalfd.c signalfd: use wake_up_pollfree() 2021-12-14 11:32:40 +01:00
splice.c io_uring-5.10-2020-10-24 2020-10-24 12:40:18 -07:00
stack.c
stat.c stat: fix inconsistency between struct stat and struct compat_stat 2022-04-27 13:53:54 +02:00
statfs.c Add a "nosymfollow" mount option. 2020-08-27 16:06:47 -04:00
super.c vfs: make freeze_super abort when sync_filesystem returns error 2022-02-23 12:00:59 +01:00
sync.c
timerfd.c
userfaultfd.c userfaultfd: fix a race between writeprotect and exit_mmap() 2021-10-27 09:56:51 +02:00
utimes.c fs: expose utimes_common 2020-07-31 08:16:01 +02:00
xattr.c fs/xattr.c: fix kernel-doc warnings for setxattr & removexattr 2020-10-13 18:38:27 -07:00