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Kinglong Mee 366a1569bf NFSv4: fix a reference leak caused WARNING messages
Because nfs4_opendata_access() has close the state when access is denied,
so the state isn't leak.
Rather than revert the commit a974deee47, I'd like clean the strange state close.

[ 1615.094218] ------------[ cut here ]------------
[ 1615.094607] WARNING: CPU: 0 PID: 23702 at lib/list_debug.c:31 __list_add_valid+0x8e/0xa0
[ 1615.094913] list_add double add: new=ffff9d7901d9f608, prev=ffff9d7901d9f608, next=ffff9d7901ee8dd0.
[ 1615.095458] Modules linked in: nfsv4(E) nfs(E) nfsd(E) tun bridge stp llc fuse ip_set nfnetlink vmw_vsock_vmci_transport vsock f2fs snd_seq_midi snd_seq_midi_event fscrypto coretemp ppdev crct10dif_pclmul crc32_pclmul ghash_clmulni_intel intel_rapl_perf vmw_balloon snd_ens1371 joydev gameport snd_ac97_codec ac97_bus snd_seq snd_pcm snd_rawmidi snd_timer snd_seq_device snd soundcore nfit parport_pc parport acpi_cpufreq tpm_tis tpm_tis_core tpm i2c_piix4 vmw_vmci shpchp auth_rpcgss nfs_acl lockd(E) grace sunrpc(E) xfs libcrc32c vmwgfx drm_kms_helper ttm drm crc32c_intel mptspi e1000 serio_raw scsi_transport_spi mptscsih mptbase ata_generic pata_acpi fjes [last unloaded: nfs]
[ 1615.097663] CPU: 0 PID: 23702 Comm: fstest Tainted: G        W   E   4.11.0-rc1+ #517
[ 1615.098015] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015
[ 1615.098807] Call Trace:
[ 1615.099183]  dump_stack+0x63/0x86
[ 1615.099578]  __warn+0xcb/0xf0
[ 1615.099967]  warn_slowpath_fmt+0x5f/0x80
[ 1615.100370]  __list_add_valid+0x8e/0xa0
[ 1615.100760]  nfs4_put_state_owner+0x75/0xc0 [nfsv4]
[ 1615.101136]  __nfs4_close+0x109/0x140 [nfsv4]
[ 1615.101524]  nfs4_close_state+0x15/0x20 [nfsv4]
[ 1615.101949]  nfs4_close_context+0x21/0x30 [nfsv4]
[ 1615.102691]  __put_nfs_open_context+0xb8/0x110 [nfs]
[ 1615.103155]  put_nfs_open_context+0x10/0x20 [nfs]
[ 1615.103586]  nfs4_file_open+0x13b/0x260 [nfsv4]
[ 1615.103978]  do_dentry_open+0x20a/0x2f0
[ 1615.104369]  ? nfs4_copy_file_range+0x30/0x30 [nfsv4]
[ 1615.104739]  vfs_open+0x4c/0x70
[ 1615.105106]  ? may_open+0x5a/0x100
[ 1615.105469]  path_openat+0x623/0x1420
[ 1615.105823]  do_filp_open+0x91/0x100
[ 1615.106174]  ? __alloc_fd+0x3f/0x170
[ 1615.106568]  do_sys_open+0x130/0x220
[ 1615.106920]  ? __put_cred+0x3d/0x50
[ 1615.107256]  SyS_open+0x1e/0x20
[ 1615.107588]  entry_SYSCALL_64_fastpath+0x1a/0xa9
[ 1615.107922] RIP: 0033:0x7fab599069b0
[ 1615.108247] RSP: 002b:00007ffcf0600d78 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
[ 1615.108575] RAX: ffffffffffffffda RBX: 00007fab59bcfae0 RCX: 00007fab599069b0
[ 1615.108896] RDX: 0000000000000200 RSI: 0000000000000200 RDI: 00007ffcf060255e
[ 1615.109211] RBP: 0000000000040010 R08: 0000000000000000 R09: 0000000000000016
[ 1615.109515] R10: 00000000000006a1 R11: 0000000000000246 R12: 0000000000041000
[ 1615.109806] R13: 0000000000040010 R14: 0000000000001000 R15: 0000000000002710
[ 1615.110152] ---[ end trace 96ed63b1306bf2f3 ]---

Fixes: a974deee47 ("NFSv4: Fix memory and state leak in...")
Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2017-03-13 10:55:45 -04:00
arch parisc: Don't use BITS_PER_LONG in userspace-exported swab.h header 2017-01-28 21:54:23 +01:00
block blk-mq: Remove unused variable 2017-01-18 15:14:15 -07:00
certs certs: Add a secondary system keyring that can be added to dynamically 2016-04-11 22:48:09 +01:00
crypto crypto: testmgr - Use heap buffer for acomp test input 2016-12-27 17:32:11 +08:00
Documentation ARC fixes for 4.10-rc6 2017-01-28 11:00:08 -08:00
drivers drm/i915: Check for NULL i915_vma in intel_unpin_fb_obj() 2017-01-29 13:50:06 -08:00
firmware
fs NFSv4: fix a reference leak caused WARNING messages 2017-03-13 10:55:45 -04:00
include SUNRPC: Add a helper function xdr_stream_decode_string_dup() 2017-02-21 16:56:16 -05:00
init cgroup: move CONFIG_SOCK_CGROUP_DATA to init/Kconfig 2017-01-11 09:47:10 -05:00
ipc ipc/sem.c: fix incorrect sem_lock pairing 2017-01-10 18:31:55 -08:00
kernel Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-01-27 12:54:16 -08:00
lib mm: do not export ioremap_page_range symbol for external module 2017-01-24 16:26:14 -08:00
mm mm, page_alloc: fix premature OOM when racing with cpuset mems update 2017-01-24 16:26:14 -08:00
net SUNRPC: Add a helper function xdr_stream_decode_string_dup() 2017-02-21 16:56:16 -05:00
samples bpf: fix samples xdp_tx_iptunnel and tc_l2_redirect with fake KBUILD_MODNAME 2017-01-20 12:04:07 -05:00
scripts gcc-plugins: update gcc-common.h for gcc-7 2017-01-03 12:08:59 -08:00
security Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
sound ASoC: Fixes for v4.10 2017-01-11 19:49:27 +01:00
tools Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-01-27 12:54:16 -08:00
usr kbuild: initramfs cleanup, set target from Kconfig 2017-01-05 09:40:16 -08:00
virt KVM/ARM updates for 4.10-rc4 2017-01-17 15:04:59 +01:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild 2016-08-02 16:48:52 -04:00
.mailmap mailmap: add codeaurora.org names for nameless email commits 2017-01-10 18:31:55 -08:00
COPYING
CREDITS CREDITS: Remove outdated address information 2016-12-21 15:21:29 -08:00
Kbuild scripts/gdb: provide linux constants 2016-05-23 17:04:14 -07:00
Kconfig
MAINTAINERS Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-01-27 12:54:16 -08:00
Makefile Linux 4.10-rc6 2017-01-29 14:25:17 -08:00
README README: add a new README file, pointing to the Documentation/ 2016-10-24 08:12:35 -02:00

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.