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Filename Latest commit message Latest commit date
Trond Myklebust b49c15f97c NFSv4.0: Fix a lock leak in nfs40_walk_client_list 
Xiaolong Ye's kernel test robot detected the following Oops:
[  299.158991] BUG: scheduling while atomic: mount.nfs/9387/0x00000002
[  299.169587] 2 locks held by mount.nfs/9387:
[  299.176165]  #0:  (nfs_clid_init_mutex){......}, at: [<ffffffff8130cc92>] nfs4_discover_server_trunking+0x47/0x1fc
[  299.201802]  #1:  (&(&nn->nfs_client_lock)->rlock){......}, at: [<ffffffff813125fa>] nfs40_walk_client_list+0x2e9/0x338
[  299.221979] CPU: 0 PID: 9387 Comm: mount.nfs Not tainted 4.11.0-rc7-00021-g14d1bbb #45
[  299.235584] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[  299.251176] Call Trace:
[  299.255192]  dump_stack+0x61/0x7e
[  299.260416]  __schedule_bug+0x65/0x74
[  299.266208]  __schedule+0x5d/0x87c
[  299.271883]  schedule+0x89/0x9a
[  299.276937]  schedule_timeout+0x232/0x289
[  299.283223]  ? detach_if_pending+0x10b/0x10b
[  299.289935]  schedule_timeout_uninterruptible+0x2a/0x2c
[  299.298266]  ? put_rpccred+0x3e/0x115
[  299.304327]  ? schedule_timeout_uninterruptible+0x2a/0x2c
[  299.312851]  msleep+0x1e/0x22
[  299.317612]  nfs4_discover_server_trunking+0x102/0x1fc
[  299.325644]  nfs4_init_client+0x13f/0x194

It looks as if we recently added a spin_lock() leak to
nfs40_walk_client_list() when cleaning up the code.

Reported-by: kernel test robot <xiaolong.ye@intel.com>
Fixes: 14d1bbb0ca ("NFS: Create a common nfs4_match_client() function")
Cc: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2017-05-24 08:05:16 -04:00
arch x86: fix 32-bit case of __get_user_asm_u64() 2017-05-21 18:26:54 -07:00
block
certs
crypto
Documentation Staging driver fixes for 4.12-rc2 2017-05-20 09:02:27 -07:00
drivers Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-05-21 11:45:26 -07:00
firmware
fs NFSv4.0: Fix a lock leak in nfs40_walk_client_list 2017-05-24 08:05:16 -04:00
include This fixes a bug caused by not cleaning up the new instance unique triggers 2017-05-20 23:39:03 -07:00
init
ipc
kernel Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-05-21 11:52:00 -07:00
lib
mm
net xprtrdma: Delete an error message for a failed memory allocation in xprt_rdma_bc_setup() 2017-05-24 07:53:37 -04:00
samples
scripts
security
sound
tools This fixes a bug caused by not cleaning up the new instance unique triggers 2017-05-20 23:39:03 -07:00
usr
virt
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Staging driver fixes for 4.12-rc2 2017-05-20 09:02:27 -07:00
Makefile Linux 4.12-rc2 2017-05-21 19:30:23 -07:00
README

README 

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.