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Guoqing Jiang 3596a06583 nvme: fix potential memory leaks in nvme_cdev_add 
We need to call put_device if cdev_device_add failed, otherwise
kmemleak has below report.

[<0000000024c71758>] kmem_cache_alloc_trace+0x233/0x480
[<00000000ad2813ed>] device_add+0x7ff/0xe10
[<0000000035bc54c4>] cdev_device_add+0x72/0xa0
[<000000006c9aa1e8>] nvme_cdev_add+0xa9/0xf0 [nvme_core]
[<000000003c4d492d>] nvme_mpath_set_live+0x251/0x290 [nvme_core]
[<00000000889a58da>] nvme_mpath_add_disk+0x268/0x320 [nvme_core]
[<00000000192e7161>] nvme_alloc_ns+0x669/0xac0 [nvme_core]
[<000000007a1a6041>] nvme_validate_or_alloc_ns+0x156/0x280 [nvme_core]
[<000000003a763c35>] nvme_scan_work+0x221/0x3c0 [nvme_core]
[<000000009ff10706>] process_one_work+0x5cf/0xb10
[<000000000644ee25>] worker_thread+0x7a/0x680
[<00000000285ebd2f>] kthread+0x1c6/0x210
[<00000000e297c6ea>] ret_from_fork+0x22/0x30

Fixes: 2637baed78 ("nvme: introduce generic per-namespace chardev")
Signed-off-by: Guoqing Jiang <jiangguoqing@kylinos.cn>
Reviewed-by: Javier González <javier.gonz@samsung.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
History 2021-05-25 09:21:15 +02:00
arch The x86 MM changes in this cycle were: 2021-04-29 11:41:43 -07:00
block block: prevent block device lookups at the beginning of del_gendisk 2021-05-20 07:59:35 -06:00
certs certs: add 'x509_revocation_list' to gitignore 2021-04-26 10:48:07 -07:00
crypto for-5.13/drivers-2021-04-27 2021-04-28 14:39:37 -07:00
Documentation - removed get_fs/set_fs 2021-04-29 11:28:08 -07:00
drivers nvme: fix potential memory leaks in nvme_cdev_add 2021-05-25 09:21:15 +02:00
fs block: fix a race between del_gendisk and BLKRRPART 2021-05-20 07:59:35 -06:00
include block: prevent block device lookups at the beginning of del_gendisk 2021-05-20 07:59:35 -06:00
init Merge branch 'for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup 2021-04-27 18:47:42 -07:00
ipc fs: make helpers idmap mount aware 2021-01-24 14:27:20 +01:00
kernel The x86 MM changes in this cycle were: 2021-04-29 11:41:43 -07:00
lib - removed get_fs/set_fs 2021-04-29 11:28:08 -07:00
LICENSES LICENSES: Add the CC-BY-4.0 license 2020-12-08 10:33:27 -07:00
mm \n 2021-04-29 11:06:13 -07:00
net Scheduler updates for this cycle are: 2021-04-28 13:33:57 -07:00
samples vfio/mdev: Correct the function signatures for the mdev_type_attributes 2021-04-12 10:36:00 -06:00
scripts Devicetree updates for v5.13: 2021-04-28 15:50:24 -07:00
security Devicetree updates for v5.13: 2021-04-28 15:50:24 -07:00
sound - Core Frameworks 2021-04-28 15:59:13 -07:00
tools Perf events changes in this cycle were: 2021-04-28 13:03:44 -07:00
usr Kbuild updates for v5.12 2021-02-25 10:17:31 -08:00
virt KVM: x86/mmu: Consider the hva in mmu_notifier retry 2021-02-22 13:16:53 -05:00
.clang-format cxl for 5.12 2021-02-24 09:38:36 -08:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore clang-lto series for v5.12-rc1 2021-02-23 09:28:51 -08:00
.mailmap It's been a relatively busy cycle in docsland, though more than usually 2021-04-26 13:22:43 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS - Core Frameworks 2021-04-28 15:59:13 -07:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Here's a collection of largely clk driver updates for the merge window. The 2021-04-28 17:13:56 -07:00
Makefile CFI on arm64 series for v5.13-rc1 2021-04-27 10:16:46 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

README 

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

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

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.