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Kaike Wan d03460035f IB/hfi1: Fix memory leaks in sysfs registration and unregistration commit `5c15abc432` upstream. When the hfi1 driver is unloaded, kmemleak will report the following issue: unreferenced object 0xffff8888461a4c08 (size 8): comm "kworker/0:0", pid 5, jiffies 4298601264 (age 2047.134s) hex dump (first 8 bytes): 73 64 6d 61 30 00 ff ff sdma0... backtrace: [<00000000311a6ef5>] kvasprintf+0x62/0xd0 [<00000000ade94d9f>] kobject_set_name_vargs+0x1c/0x90 [<0000000060657dbb>] kobject_init_and_add+0x5d/0xb0 [<00000000346fe72b>] 0xffffffffa0c5ecba [<000000006cfc5819>] 0xffffffffa0c866b9 [<0000000031c65580>] 0xffffffffa0c38e87 [<00000000e9739b3f>] local_pci_probe+0x41/0x80 [<000000006c69911d>] work_for_cpu_fn+0x16/0x20 [<00000000601267b5>] process_one_work+0x171/0x380 [<0000000049a0eefa>] worker_thread+0x1d1/0x3f0 [<00000000909cf2b9>] kthread+0xf8/0x130 [<0000000058f5f874>] ret_from_fork+0x35/0x40 This patch fixes the issue by: - Releasing dd->per_sdma[i].kobject in hfi1_unregister_sysfs(). - This will fix the memory leak. - Calling kobject_put() to unwind operations only for those entries in dd->per_sdma[] whose operations have succeeded (including the current one that has just failed) in hfi1_verbs_register_sysfs(). Cc: <stable@vger.kernel.org> Fixes: `0cb2aa690c` ("IB/hfi1: Add sysfs interface for affinity setup") Link: https://lore.kernel.org/r/20200326163807.21129.27371.stgit@awfm-01.aw.intel.com Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Kaike Wan <kaike.wan@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-04-13 10:45:11 +02:00
arch	arm64: dts: ls1046ardb: set RGMII interfaces to RGMII_ID mode	2020-04-02 15:28:25 +02:00
block	block, bfq: fix overwrite of bfq_group pointer in bfq_find_set_group()	2020-03-25 08:06:08 +01:00
certs	export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR()	2018-08-22 23:21:44 +09:00
crypto	crypto: api - Fix race condition in crypto_spawn_alg	2020-02-11 04:34:05 -08:00
Documentation	dt-bindings: net: FMan erratum A050385	2020-04-02 15:28:14 +02:00
drivers	IB/hfi1: Fix memory leaks in sysfs registration and unregistration	2020-04-13 10:45:11 +02:00
firmware	Fix built-in early-load Intel microcode alignment	2020-01-23 08:21:29 +01:00
fs	libfs: fix infoleak in simple_attr_read()	2020-04-02 15:28:21 +02:00
include	include/linux/notifier.h: SRCU: fix ctags	2020-04-13 10:45:06 +02:00
init	fork: fix some -Wmissing-prototypes warnings	2019-12-05 09:21:04 +01:00
ipc	Revert "ipc,sem: remove uneeded sem_undo_list lock usage in exit_sem()"	2020-02-28 16:38:49 +01:00
kernel	padata: always acquire cpu_hotplug_lock before pinst->lock	2020-04-13 10:45:05 +02:00
lib	lib/stackdepot.c: fix global out-of-bounds in stack_slabs	2020-02-28 16:38:55 +01:00
LICENSES	LICENSES: Remove CC-BY-SA-4.0 license text	2018-10-18 11:28:50 +02:00
mm	mm: mempolicy: require at least one nodeid for MPOL_PREFERRED	2020-04-13 10:45:06 +02:00
net	ipv6: don't auto-add link-local address to lag ports	2020-04-13 10:45:07 +02:00
samples	samples/bpf: Don't try to remove user's homedir on clean	2020-02-11 04:34:05 -08:00
scripts	scripts/dtc: Remove redundant YYLOC global declaration	2020-04-02 15:28:17 +02:00
security	selinux: ensure we cleanup the internal AVC counters on error in avc_update()	2020-02-24 08:34:43 +01:00
sound	ASoC: jz4740-i2s: Fix divider written at incorrect offset in register	2020-04-13 10:45:11 +02:00
tools	tools/accounting/getdelays.c: fix netlink attribute length	2020-04-13 10:45:10 +02:00
usr	initramfs: restore default compression behavior	2020-04-13 10:44:59 +02:00
virt	KVM: Check for a bad hva before dropping into the ghc slow path	2020-03-05 16:42:21 +01:00
.clang-format	clang-format: Set IndentWrappedFunctionNames false	2018-08-01 18:38:51 +02:00
.cocciconfig
.get_maintainer.ignore
.gitattributes	.gitattributes: set git diff driver for C source code files	2016-10-07 18:46:30 -07:00
.gitignore	Kbuild updates for v4.17 (2nd)	2018-04-15 17:21:30 -07:00
.mailmap	libnvdimm-for-4.19_misc	2018-08-25 18:13:10 -07:00
COPYING	COPYING: use the new text with points to the license files	2018-03-23 12:41:45 -06:00
CREDITS	9p: remove Ron Minnich from MAINTAINERS	2018-08-17 16:20:26 -07:00
Kbuild	Kbuild updates for v4.15	2017-11-17 17:45:29 -08:00
Kconfig	kconfig: move the "Executable file formats" menu to fs/Kconfig.binfmt	2018-08-02 08:06:55 +09:00
MAINTAINERS	MAINTAINERS: Update drm/i915 bug filing URL	2020-02-28 16:38:49 +01:00
Makefile	Linux 4.19.114	2020-04-02 15:28:25 +02:00
README	Docs: Added a pointer to the formatted docs to README	2018-03-21 09:02:53 -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.
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.