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Xulin Sun 49bcb0415d rtc: pcf2127: fix a kmemleak caused in pcf2127_i2c_gather_write 
[ Upstream commit 9bde0afb7a ]

pcf2127_i2c_gather_write() allocates memory as local variable
for i2c_master_send(), after finishing the master transfer,
the allocated memory should be freed. The kmemleak is reported:

unreferenced object 0xffff80231e7dba80 (size 64):
  comm "hwclock", pid 27762, jiffies 4296880075 (age 356.944s)
  hex dump (first 32 bytes):
    03 00 12 03 19 02 11 13 00 80 98 18 00 00 ff ff ................
    00 50 00 00 00 00 00 00 02 00 00 00 00 00 00 00 .P..............
  backtrace:
    [<ffff000008221398>] create_object+0xf8/0x278
    [<ffff000008a96264>] kmemleak_alloc+0x74/0xa0
    [<ffff00000821070c>] __kmalloc+0x1ac/0x348
    [<ffff0000087ed1dc>] pcf2127_i2c_gather_write+0x54/0xf8
    [<ffff0000085fd9d4>] _regmap_raw_write+0x464/0x850
    [<ffff0000085fe3f4>] regmap_bulk_write+0x1a4/0x348
    [<ffff0000087ed32c>] pcf2127_rtc_set_time+0xac/0xe8
    [<ffff0000087eaad8>] rtc_set_time+0x80/0x138
    [<ffff0000087ebfb0>] rtc_dev_ioctl+0x398/0x610
    [<ffff00000823f2c0>] do_vfs_ioctl+0xb0/0x848
    [<ffff00000823fae4>] SyS_ioctl+0x8c/0xa8
    [<ffff000008083ac0>] el0_svc_naked+0x34/0x38
    [<ffffffffffffffff>] 0xffffffffffffffff

Signed-off-by: Xulin Sun <xulin.sun@windriver.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2018-12-01 09:37:32 +01:00
arch KVM: PPC: Move and undef TRACE_INCLUDE_PATH/FILE 2018-12-01 09:37:32 +01:00
block block: Clear kernel memory before copying to user 2018-11-27 16:13:05 +01:00
certs export.h: remove VMLINUX_SYMBOL() and VMLINUX_SYMBOL_STR() 2018-08-22 23:21:44 +09:00
crypto crypto: user - fix leaking uninitialized memory to userspace 2018-11-21 09:19:24 +01:00
Documentation can: hi311x: Use level-triggered interrupt 2018-12-01 09:37:30 +01:00
drivers rtc: pcf2127: fix a kmemleak caused in pcf2127_i2c_gather_write 2018-12-01 09:37:32 +01:00
firmware kbuild: remove all dummy assignments to obj- 2017-11-18 11:46:06 +09:00
fs fanotify: fix handling of events on child sub-directory 2018-12-01 09:37:31 +01:00
include fsnotify: generalize handling of extra event flags 2018-12-01 09:37:31 +01:00
init Kbuild updates for v4.19 (2nd) 2018-08-25 13:40:38 -07:00
ipc ipc/shm.c: use ERR_CAST() for shm_lock() error return 2018-10-05 16:32:04 -07:00
kernel sched/core: Take the hotplug lock in sched_init_smp() 2018-11-27 16:13:06 +01:00
lib lib/raid6: Fix arm64 test build 2018-11-27 16:13:05 +01:00
LICENSES LICENSES: Remove CC-BY-SA-4.0 license text 2018-10-18 11:28:50 +02:00
mm mm/memory.c: recheck page table entry with page table lock held 2018-12-01 09:37:28 +01:00
net can: raw: check for CAN FD capable netdev in raw_sendmsg() 2018-12-01 09:37:30 +01:00
samples samples: disable CONFIG_SAMPLES for UML 2018-10-11 02:15:46 +09:00
scripts Revert "scripts/setlocalversion: git: Make -dirty check more robust" 2018-11-27 16:13:08 +01:00
security selinux: Add __GFP_NOWARN to allocation at str_read() 2018-12-01 09:37:27 +01:00
sound ALSA: oss: Use kvzalloc() for local buffer allocations 2018-12-01 09:37:25 +01:00
tools tools/testing/nvdimm: Fix the array size for dimm devices. 2018-12-01 09:37:31 +01:00
usr initramfs: move gen_initramfs_list.sh from scripts/ to usr/ 2018-08-22 23:21:44 +09:00
virt KVM: arm64: Fix caching of host MDCR_EL2 value 2018-11-13 11:08:47 -08:00
.clang-format clang-format: Set IndentWrappedFunctionNames false 2018-08-01 18:38:51 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Add hch to .get_maintainer.ignore 2015-08-21 14:30:10 -07:00
.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: Add Sasha as a stable branch maintainer 2018-12-01 09:37:25 +01:00
Makefile Linux 4.19.5 2018-11-27 16:13:11 +01:00
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.