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Dai Ngo bc2b500da4 NFSv4: nfs4_proc_set_acl needs to restore NFS_CAP_UIDGID_NOMAP on error. 
commit f8849e206e upstream.

Currently if __nfs4_proc_set_acl fails with NFS4ERR_BADOWNER it
re-enables the idmapper by clearing NFS_CAP_UIDGID_NOMAP before
retrying again. The NFS_CAP_UIDGID_NOMAP remains cleared even if
the retry fails. This causes problem for subsequent setattr
requests for v4 server that does not have idmapping configured.

This patch modifies nfs4_proc_set_acl to detect NFS4ERR_BADOWNER
and NFS4ERR_BADNAME and skips the retry, since the kernel isn't
involved in encoding the ACEs, and return -EINVAL.

Steps to reproduce the problem:

 # mount -o vers=4.1,sec=sys server:/export/test /tmp/mnt
 # touch /tmp/mnt/file1
 # chown 99 /tmp/mnt/file1
 # nfs4_setfacl -a A::unknown.user@xyz.com:wrtncy /tmp/mnt/file1
 Failed setxattr operation: Invalid argument
 # chown 99 /tmp/mnt/file1
 chown: changing ownership of ‘/tmp/mnt/file1’: Invalid argument
 # umount /tmp/mnt
 # mount -o vers=4.1,sec=sys server:/export/test /tmp/mnt
 # chown 99 /tmp/mnt/file1
 #

v2: detect NFS4ERR_BADOWNER and NFS4ERR_BADNAME and skip retry
       in nfs4_proc_set_acl.
Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-16 11:53:04 +02:00
arch powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P1010 i2c controllers 2021-06-16 11:53:02 +02:00
block blk-mq: Swap two calls in blk_mq_exit_queue() 2021-05-22 10:57:40 +02:00
certs certs: Fix blacklist flag type confusion 2021-03-03 18:22:46 +01:00
crypto crypto: api - check for ERR pointers in crypto_destroy_tfm() 2021-05-22 10:57:16 +02:00
Documentation tweewide: Fix most Shebang lines 2021-06-03 08:36:11 +02:00
drivers regulator: max77620: Use device_set_of_node_from_dev() 2021-06-16 11:53:04 +02:00
firmware Fix built-in early-load Intel microcode alignment 2020-01-23 08:20:30 +01:00
fs NFSv4: nfs4_proc_set_acl needs to restore NFS_CAP_UIDGID_NOMAP on error. 2021-06-16 11:53:04 +02:00
include kvm: fix previous commit for 32-bit builds 2021-06-16 11:53:04 +02:00
init pid: take a reference when initializing cad_pid 2021-06-10 12:43:51 +02:00
ipc ipc/util.c: sysvipc_find_ipc() incorrectly updates position index 2020-05-20 08:17:07 +02:00
kernel perf: Fix data race between pin_count increment/decrement 2021-06-16 11:53:04 +02:00
lib lib: stackdepot: turn depot_lock spinlock to raw_spinlock 2021-05-22 10:57:43 +02:00
mm mm, hugetlb: fix simple resv_huge_pages underflow on UFFDIO_COPY 2021-06-10 12:43:51 +02:00
net netlink: disable IRQs for netlink_lock_table() 2021-06-16 11:53:01 +02:00
samples samples/bpf: Fix broken tracex1 due to kprobe argument change 2021-05-22 10:57:37 +02:00
scripts scripts: switch explicitly to Python 3 2021-06-03 08:36:11 +02:00
security security: commoncap: fix -Wstringop-overread warning 2021-05-22 10:57:21 +02:00
sound ASoC: sti-sas: add missing MODULE_DEVICE_TABLE 2021-06-16 11:53:00 +02:00
tools perf session: Correct buffer copying when peeking events 2021-06-16 11:53:04 +02:00
usr initramfs: restore default compression behavior 2020-04-13 10:34:19 +02:00
virt KVM: arm64: Fix exclusive limit for IPA size 2021-03-17 16:34:35 +01:00
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MAINTAINERS MAINTAINERS: Update drm/i915 bug filing URL 2020-02-28 16:36:12 +01:00
Makefile Linux 4.14.236 2021-06-10 12:43:54 +02:00
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.