commit 233bde21aa upstream.
It happens often while I'm preparing a patch for a block driver that
I'm wondering: is a definition of SECTOR_SIZE and/or SECTOR_SHIFT
available for this driver? Do I have to introduce definitions of these
constants before I can use these constants? To avoid this confusion,
move the existing definitions of SECTOR_SIZE and SECTOR_SHIFT into the
<linux/blkdev.h> header file such that these become available for all
block drivers. Make the SECTOR_SIZE definition in the uapi msdos_fs.h
header file conditional to avoid that including that header file after
<linux/blkdev.h> causes the compiler to complain about a SECTOR_SIZE
redefinition.
Note: the SECTOR_SIZE / SECTOR_SHIFT / SECTOR_BITS definitions have
not been removed from uapi header files nor from NAND drivers in
which these constants are used for another purpose than converting
block layer offsets and sizes into a number of sectors.
Cc: David S. Miller <davem@davemloft.net>
Cc: Mike Snitzer <snitzer@redhat.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit da9125df85 ]
This should be NFTA_LIST_UNSPEC instead of NFTA_LIST_UNPEC, all other
similar attribute definitions are postfixed with _UNSPEC.
Fixes: 96518518cc ("netfilter: add nftables")
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Commit fcc8487d47 ("uapi: export all headers
under uapi directories") changed the default to install all headers not marked
to be conditional. This takes the list of headers listed in the commit message
and manually adds an export for those that are already present in this kernel
version.
Found during an attempt to build mtd-utils 2.1.2 as it wants hash_info.h, which
exists since 3.13 but has not been installed until the above mentioned commit,
which ended up in 4.12.
Signed-off-by: Rolf Eike Beer <eb@emlix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 9078b4eea1 upstream.
Some files will be exported after a following patch. 0-day tests report the
following warning/error:
./usr/include/linux/bcache.h:8: include of <linux/types.h> is preferred over <asm/types.h>
./usr/include/linux/bcache.h:11: found __[us]{8,16,32,64} type without #include <linux/types.h>
./usr/include/linux/qrtr.h:8: found __[us]{8,16,32,64} type without #include <linux/types.h>
./usr/include/linux/cryptouser.h:39: found __[us]{8,16,32,64} type without #include <linux/types.h>
./usr/include/linux/pr.h:14: found __[us]{8,16,32,64} type without #include <linux/types.h>
./usr/include/linux/btrfs_tree.h:337: found __[us]{8,16,32,64} type without #include <linux/types.h>
./usr/include/rdma/bnxt_re-abi.h:45: found __[us]{8,16,32,64} type without #include <linux/types.h>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
reb: left out include/uapi/rdma/bnxt_re-abi.h as it's not in this kernel version
Signed-off-by: Rolf Eike Beer <eb@emlix.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 259a41d9ae upstream
There are several problems with regards to the return of
FE_SET_PROPERTY. The original idea were to return per-property
return codes via tvp->result field, and to return an updated
set of values.
However, that never worked. What's actually implemented is:
- the FE_SET_PROPERTY implementation doesn't call .get_frontend
callback in order to get the actual parameters after return;
- the tvp->result field is only filled if there's no error.
So, it is always filled with zero;
- FE_SET_PROPERTY doesn't call memdup_user() nor any other
copy_to_user() function. So, any changes to the properties
will be lost;
- FE_SET_PROPERTY is declared as a write-only ioctl (IOW).
While we could fix the above, it could cause regressions.
So, let's just assume what the code really does, updating
the documentation accordingly and removing the logic that
would update the discarded tvp->result.
Reviewed-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 8220ead805 upstream
Most of the stuff at the Digital TV frontend header file
are documented only at the Documentation. However, a few
kernel-doc markups are there, several of them with parsing
issues.
Add the missing documentation, copying definitions from the
Documentation when it applies, fixing some bugs.
Please notice that DVBv3 stuff that were deprecated weren't
commented by purpose. Instead, they were clearly tagged as
such.
This patch prepares to move part of the documentation from
Documentation/ to kernel-doc comments.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit f35afa4f60 upstream
struct dtv_cmds_h is just an ancillary struct used by the
dvb_frontend.c to internally store frontend commands.
It doesn't belong to the userspace header, nor it is used anywhere,
except inside the DVB core. So, remove it from the header.
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit f7d31e6536 ]
The problem the patch is trying to address is the fact that 'struct
kvm_hyperv_exit' has different layout on when compiling in 32 and 64 bit
modes.
In 64-bit mode the default alignment boundary is 64 bits thus
forcing extra gaps after 'type' and 'msr' but in 32-bit mode the
boundary is at 32 bits thus no extra gaps.
This is an issue as even when the kernel is 64 bit, the userspace using
the interface can be both 32 and 64 bit but the same 32 bit userspace has
to work with 32 bit kernel.
The issue is fixed by forcing the 64 bit layout, this leads to ABI
change for 32 bit builds and while we are obviously breaking '32 bit
userspace with 32 bit kernel' case, we're fixing the '32 bit userspace
with 64 bit kernel' one.
As the interface has no (known) users and 32 bit KVM is rather baroque
nowadays, this seems like a reasonable decision.
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Jon Doron <arilou@gmail.com>
Message-Id: <20200424113746.3473563-2-arilou@gmail.com>
Reviewed-by: Roman Kagan <rvkagan@yandex-team.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit a9e4998073 upstream.
The fe_status variable s is not initialized meaning it can have any
random garbage status. This could be problematic if fe->ops.tune is
false as s is not updated by the call to fe->ops.tune() and a
subsequent check on the change status will using a garbage value.
Fix this by adding FE_NONE to the enum fe_status and initializing
s to this.
Detected by CoverityScan, CID#112887 ("Uninitialized scalar variable")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit a725eb15db upstream.
Because of <linux/libc-compat.h> interface limitations, <netinet/in.h>
provided by libc cannot be included after <linux/in.h>, therefore any
header that includes <netinet/in.h> cannot be included after <linux/in.h>.
Change uapi/linux/l2tp.h, the last uapi header that includes
<netinet/in.h>, to include <linux/in.h> and <linux/in6.h> instead of
<netinet/in.h> and use __SOCK_SIZE__ instead of sizeof(struct sockaddr)
the same way as uapi/linux/in.h does, to fix linux/if_pppol2tp.h userspace
compilation errors like this:
In file included from /usr/include/linux/l2tp.h:12:0,
from /usr/include/linux/if_pppol2tp.h:21,
/usr/include/netinet/in.h:31:8: error: redefinition of 'struct in_addr'
Fixes: 47c3e7783b ("net: l2tp: deprecate PPPOL2TP_MSG_* in favour of L2TP_MSG_*")
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Asbjoern Sloth Toennesen <asbjorn@asbjorn.st>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 47c3e7783b upstream.
PPPOL2TP_MSG_* and L2TP_MSG_* are duplicates, and are being used
interchangeably in the kernel, so let's standardize on L2TP_MSG_*
internally, and keep PPPOL2TP_MSG_* defined in UAPI for compatibility.
Signed-off-by: Asbjoern Sloth Toennesen <asbjorn@asbjorn.st>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Giuliano Procida <gprocida@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 19cab88726 upstream.
Commit 3f1ac7a700 ("net: ethtool: add new ETHTOOL_xLINKSETTINGS API")
deprecated the ethtool_cmd::transceiver field, which was fine in
premise, except that the PHY library was actually using it to report the
type of transceiver: internal or external.
Use the first word of the reserved field to put this __u8 transceiver
field back in. It is made read-only, and we don't expect the
ETHTOOL_xLINKSETTINGS API to be doing anything with this anyway, so this
is mostly for the legacy path where we do:
ethtool_get_settings()
-> dev->ethtool_ops->get_link_ksettings()
-> convert_link_ksettings_to_legacy_settings()
to have no information loss compared to the legacy get_settings API.
Fixes: 3f1ac7a700 ("net: ethtool: add new ETHTOOL_xLINKSETTINGS API")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 164166558a ]
With 'bytes(__u32)' being 32, a left-shift of 31 may happen which is
undefined for the signed 32-bit value 1. Avoid this by declaring 1 as
unsigned.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit fe163e534e ]
syzbot reported:
BUG: KMSAN: uninit-value in capi_write+0x791/0xa90 drivers/isdn/capi/capi.c:700
CPU: 0 PID: 10025 Comm: syz-executor379 Not tainted 4.20.0-rc7+ #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x173/0x1d0 lib/dump_stack.c:113
kmsan_report+0x12e/0x2a0 mm/kmsan/kmsan.c:613
__msan_warning+0x82/0xf0 mm/kmsan/kmsan_instr.c:313
capi_write+0x791/0xa90 drivers/isdn/capi/capi.c:700
do_loop_readv_writev fs/read_write.c:703 [inline]
do_iter_write+0x83e/0xd80 fs/read_write.c:961
vfs_writev fs/read_write.c:1004 [inline]
do_writev+0x397/0x840 fs/read_write.c:1039
__do_sys_writev fs/read_write.c:1112 [inline]
__se_sys_writev+0x9b/0xb0 fs/read_write.c:1109
__x64_sys_writev+0x4a/0x70 fs/read_write.c:1109
do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291
entry_SYSCALL_64_after_hwframe+0x63/0xe7
[...]
The problem is that capi_write() is reading past the end of the message.
Fix it by checking the message's length in the needed places.
Reported-and-tested-by: syzbot+0849c524d9c634f5ae66@syzkaller.appspotmail.com
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
PD#SWPL-4863
With the atomic API, it is possible that a single commit affects
multiple crtcs. If the user requests an event with that commit, one
event will be sent for each CRTC, but it is not possible to distinguish
which crtc an event is for in user space. To solve this, the reserved
field in struct drm_vblank_event is repurposed to include the crtc_id
which the event is for.
The DRM_CAP_CRTC_IN_VBLANK_EVENT is added to allow userspace to query if
the crtc field will be set properly.
[daniels: Rebased, using Maarten's forward-port.]
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Signed-off-by: Daniel Stone <daniels@collabora.com>
Cc: Maarten Lankhorst <maarten.lankhorst@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170404165221.28240-2-daniels@collabora.com
Change-Id: Ide7657bdc38563d2de91edc2d649b53262002c39
Signed-off-by: Ao Xu <ao.xu@amlogic.com>
commit c32cc30c05 upstream.
cpu_to_le32/le32_to_cpu is defined in include/linux/byteorder/generic.h,
which is not exported to user-space.
UAPI headers must use the ones prefixed with double-underscore.
Detected by compile-testing exported headers:
include/linux/nilfs2_ondisk.h: In function `nilfs_checkpoint_set_snapshot':
include/linux/nilfs2_ondisk.h:536:17: error: implicit declaration of function `cpu_to_le32' [-Werror=implicit-function-declaration]
cp->cp_flags = cpu_to_le32(le32_to_cpu(cp->cp_flags) | \
^
include/linux/nilfs2_ondisk.h:552:1: note: in expansion of macro `NILFS_CHECKPOINT_FNS'
NILFS_CHECKPOINT_FNS(SNAPSHOT, snapshot)
^~~~~~~~~~~~~~~~~~~~
include/linux/nilfs2_ondisk.h:536:29: error: implicit declaration of function `le32_to_cpu' [-Werror=implicit-function-declaration]
cp->cp_flags = cpu_to_le32(le32_to_cpu(cp->cp_flags) | \
^
include/linux/nilfs2_ondisk.h:552:1: note: in expansion of macro `NILFS_CHECKPOINT_FNS'
NILFS_CHECKPOINT_FNS(SNAPSHOT, snapshot)
^~~~~~~~~~~~~~~~~~~~
include/linux/nilfs2_ondisk.h: In function `nilfs_segment_usage_set_clean':
include/linux/nilfs2_ondisk.h:622:19: error: implicit declaration of function `cpu_to_le64' [-Werror=implicit-function-declaration]
su->su_lastmod = cpu_to_le64(0);
^~~~~~~~~~~
Link: http://lkml.kernel.org/r/20190605053006.14332-1-yamada.masahiro@socionext.com
Fixes: e63e88bc53 ("nilfs2: move ioctl interface and disk layout to uapi separately")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg KH <gregkh@linuxfoundation.org>
Cc: Joe Perches <joe@perches.com>
Cc: <stable@vger.kernel.org> [4.9+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
PD#SWPL-9646
Problem:
unsupport multi-layer
Solution:
add multi-layer support
Verify:
verify by w400 with modetest command
Change-Id: I5cd50761d2ab9cfff0f80d38e20455044c7a33fd
Signed-off-by: Dezhi Kong <dezhi.kong@amlogic.com>
commit f070ef2ac6 upstream.
Jonathan Looney reported that a malicious peer can force a sender
to fragment its retransmit queue into tiny skbs, inflating memory
usage and/or overflow 32bit counters.
TCP allows an application to queue up to sk_sndbuf bytes,
so we need to give some allowance for non malicious splitting
of retransmit queue.
A new SNMP counter is added to monitor how many times TCP
did not allow to split an skb if the allowance was exceeded.
Note that this counter might increase in the case applications
use SO_SNDBUF socket option to lower sk_sndbuf.
CVE-2019-11478 : tcp_fragment, prevent fragmenting a packet when the
socket is already using more than half the allowed space
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Jonathan Looney <jtl@netflix.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Reviewed-by: Tyler Hicks <tyhicks@canonical.com>
Cc: Bruce Curtis <brucec@netflix.com>
Cc: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit bbd84f3365 upstream.
Starting from commit 9c225f2655 ("vfs: atomic f_pos accesses as per
POSIX") files opened even via nonseekable_open gate read and write via lock
and do not allow them to be run simultaneously. This can create read vs
write deadlock if a filesystem is trying to implement a socket-like file
which is intended to be simultaneously used for both read and write from
filesystem client. See commit 10dce8af34 ("fs: stream_open - opener for
stream-like files so that read and write can run simultaneously without
deadlock") for details and e.g. commit 581d21a2d0 ("xenbus: fix deadlock
on writes to /proc/xen/xenbus") for a similar deadlock example on
/proc/xen/xenbus.
To avoid such deadlock it was tempting to adjust fuse_finish_open to use
stream_open instead of nonseekable_open on just FOPEN_NONSEEKABLE flags,
but grepping through Debian codesearch shows users of FOPEN_NONSEEKABLE,
and in particular GVFS which actually uses offset in its read and write
handlers
https://codesearch.debian.net/search?q=-%3Enonseekable+%3Dhttps://gitlab.gnome.org/GNOME/gvfs/blob/1.40.0-6-gcbc54396/client/gvfsfusedaemon.c#L1080https://gitlab.gnome.org/GNOME/gvfs/blob/1.40.0-6-gcbc54396/client/gvfsfusedaemon.c#L1247-1346https://gitlab.gnome.org/GNOME/gvfs/blob/1.40.0-6-gcbc54396/client/gvfsfusedaemon.c#L1399-1481
so if we would do such a change it will break a real user.
Add another flag (FOPEN_STREAM) for filesystem servers to indicate that the
opened handler is having stream-like semantics; does not use file position
and thus the kernel is free to issue simultaneous read and write request on
opened file handle.
This patch together with stream_open() should be added to stable kernels
starting from v3.14+. This will allow to patch OSSPD and other FUSE
filesystems that provide stream-like files to return FOPEN_STREAM |
FOPEN_NONSEEKABLE in open handler and this way avoid the deadlock on all
kernel versions. This should work because fuse_finish_open ignores unknown
open flags returned from a filesystem and so passing FOPEN_STREAM to a
kernel that is not aware of this flag cannot hurt. In turn the kernel that
is not aware of FOPEN_STREAM will be < v3.14 where just FOPEN_NONSEEKABLE
is sufficient to implement streams without read vs write deadlock.
Cc: stable@vger.kernel.org # v3.14+
Signed-off-by: Kirill Smelkov <kirr@nexedi.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
TLV_SET is called with a data pointer and a len parameter that tells us
how many bytes are pointed to by data. When invoking memcpy() we need
to careful to only copy len bytes.
Previously we would copy TLV_LENGTH(len) bytes which would copy an extra
4 bytes past the end of the data pointer which newer GCC versions
complain about.
In file included from test.c:17:
In function 'TLV_SET',
inlined from 'test' at test.c:186:5:
/usr/include/linux/tipc_config.h:317:3:
warning: 'memcpy' forming offset [33, 36] is out of the bounds [0, 32]
of object 'bearer_name' with type 'char[32]' [-Warray-bounds]
memcpy(TLV_DATA(tlv_ptr), data, tlv_len);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
test.c: In function 'test':
test.c::161:10: note:
'bearer_name' declared here
char bearer_name[TIPC_MAX_BEARER_NAME];
^~~~~~~~~~~
We still want to ensure any padding bytes at the end are initialised, do
this with a explicit memset() rather than copy bytes past the end of
data. Apply the same logic to TCM_SET.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
PD#SWPL-5314
Problem:
1. add a dummy vframe flag VFRAME_FLAG_EMPTY_FRAME_V4L.
2. add the FRAME_BASE_PATH_V4L_* for v4l2 display
3. recycle vframes when the isr recevie the empty vframe.
Solution:
1. fixed some issues for the v4l2 decode.
2. add pause and resume for v4l2 m2m job.
Verify:
todo
Change-Id: I00b44ad4d3a75f7e2167ca347562d002c2690430
Signed-off-by: Nanxin Qin <nanxin.qin@amlogic.com>
PD#SWPL-8572
Problems:
based on android platfrom, each process may allocate 1MB vmalloc
memory space for IPC. But most process don't use full memory
range of vmalloc space. It's a waste of memory space and may
cause driver can't work normal based on 32bit kernel
Soluton:
On kernel 4.19, google have fixed it, so we need back porting
following changes:
Squashed commit of the following:
commit b12a56e5342e15e99b0fb07c67dfce0891ba2f6b
Author: Todd Kjos <tkjos@google.com>
Date: Tue Mar 19 09:53:01 2019 -0700
FROMGIT: binder: fix BUG_ON found by selinux-testsuite
The selinux-testsuite found an issue resulting in a BUG_ON()
where a conditional relied on a size_t going negative when
checking the validity of a buffer offset.
(cherry picked from commit 5997da8214
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
char-misc-linus)
Bug: 67668716
Change-Id: Ib3b408717141deadddcb6b95ad98c0b97d9d98ea
Fixes: 7a67a39320 ("binder: add function to copy binder object from buffer")
Reported-by: Paul Moore <paul@paul-moore.com>
Tested-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Todd Kjos <tkjos@google.com>
commit 5b28e504d93a5f1efc074dd7cdcadc07293bb783
Author: Todd Kjos <tkjos@android.com>
Date: Thu Feb 14 15:22:57 2019 -0800
UPSTREAM: binder: fix handling of misaligned binder object
Fixes crash found by syzbot:
kernel BUG at drivers/android/binder_alloc.c:LINE! (2)
(cherry pick from commit 26528be672)
Bug: 67668716
Reported-and-tested-by: syzbot+55de1eb4975dec156d8f@syzkaller.appspotmail.com
Signed-off-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Change-Id: Ib8597dd05a158f78503d4affe6c5f46ded16a811
commit e110c3b44e437bad09f76c2b42f23dcad898f57d
Author: Todd Kjos <tkjos@android.com>
Date: Wed Feb 13 11:48:53 2019 -0800
UPSTREAM: binder: fix sparse issue in binder_alloc_selftest.c
Fixes sparse issues reported by the kbuild test robot running
on https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
char-misc-testing: bde4a19fc0 ("binder: use userspace pointer as base
of buffer space")
Error output (drivers/android/binder_alloc_selftest.c):
sparse: warning: incorrect type in assignment (different address spaces)
sparse: expected void *page_addr
sparse: got void [noderef] <asn:1> *user_data
sparse: error: subtraction of different types can't work
Fixed by adding necessary "__user" tags.
(cherry pick from commit 36f3093792)
Bug: 67668716
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Change-Id: Ia0a16d163251381d4bc04f46a44dddbc18b10a85
commit 9f6fd7733286f1af04d153c9d3a050ca2615b3cc
Author: Todd Kjos <tkjos@android.com>
Date: Fri Feb 8 10:35:20 2019 -0800
BACKPORT: binder: use userspace pointer as base of buffer space
Now that alloc->buffer points to the userspace vm_area
rename buffer->data to buffer->user_data and rename
local pointers that hold user addresses. Also use the
"__user" tag to annotate all user pointers so sparse
can flag cases where user pointer vaues are copied to
kernel pointers. Refactor code to use offsets instead
of user pointers.
(cherry pick from commit bde4a19fc0)
Bug: 67668716
Change-Id: I9d04b844c5994d1f6214da795799e6b373bc9816
Signed-off-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 194d8606b011657ce30bf0c240a5adcad0691201
Author: Todd Kjos <tkjos@android.com>
Date: Wed Dec 5 15:19:25 2018 -0800
UPSTREAM: binder: fix kerneldoc header for struct binder_buffer
Fix the incomplete kerneldoc header for struct binder_buffer.
(cherry pick from commit 7a2670a5bc)
Bug: 67668716
Signed-off-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Change-Id: I6bb942e6a9466b02653349943524462f205af839
commit 55cb58623a60d48678d8eb74e1cabe7744ed62c2
Author: Todd Kjos <tkjos@android.com>
Date: Fri Feb 8 10:35:19 2019 -0800
BACKPORT: binder: remove user_buffer_offset
Remove user_buffer_offset since there is no kernel
buffer pointer anymore.
(cherry pick from commit c41358a5f5)
Bug: 67668716
Signed-off-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Change-Id: I399219867704dc5013453a7738193c742fc970ad
commit 3301f77efa9d99e742e5642243b891e014becf17
Author: Todd Kjos <tkjos@android.com>
Date: Fri Feb 8 10:35:18 2019 -0800
UPSTREAM: binder: remove kernel vm_area for buffer space
Remove the kernel's vm_area and the code that maps
buffer pages into it.
(cherry pick from commit 880211667b)
Bug: 67668716
Signed-off-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Change-Id: I2595bb8416c2bbfcf97ad3d7380ae94e29c209fb
commit 628c27a60665f15984364f6c0a1bda03473b3a78
Author: Todd Kjos <tkjos@android.com>
Date: Fri Feb 8 10:35:17 2019 -0800
UPSTREAM: binder: avoid kernel vm_area for buffer fixups
Refactor the functions to validate and fixup struct
binder_buffer pointer objects to avoid using vm_area
pointers. Instead copy to/from kernel space using
binder_alloc_copy_to_buffer() and
binder_alloc_copy_from_buffer(). The following
functions were refactored:
refactor binder_validate_ptr()
binder_validate_fixup()
binder_fixup_parent()
(cherry pick from commit db6b0b810b)
Bug: 67668716
Signed-off-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Change-Id: Ic222af9b6c56bf48fd0b65debe981d19a7809e77
commit ed39057090cc4a95c318bafcd97f418da56e3867
Author: Todd Kjos <tkjos@android.com>
Date: Fri Feb 8 10:35:16 2019 -0800
BACKPORT: binder: add function to copy binder object from buffer
When creating or tearing down a transaction, the binder driver
examines objects in the buffer and takes appropriate action.
To do this without needing to dereference pointers into the
buffer, the local copies of the objects are needed. This patch
introduces a function to validate and copy binder objects
from the buffer to a local structure.
(cherry pick from commit 7a67a39320)
Bug: 67668716
Signed-off-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Change-Id: I42dfe238a2d20bdeff479068ca87a80e4577e64a
commit 01f8f48c56b53faf1c795112f451a032a0d00b75
Author: Todd Kjos <tkjos@android.com>
Date: Fri Feb 8 10:35:15 2019 -0800
BACKPORT: binder: add functions to copy to/from binder buffers
Avoid vm_area when copying to or from binder buffers.
Instead, new copy functions are added that copy from
kernel space to binder buffer space. These use
kmap_atomic() and kunmap_atomic() to create temporary
mappings and then memcpy() is used to copy within
that page.
Also, kmap_atomic() / kunmap_atomic() use the appropriate
cache flushing to support VIVT cache architectures.
Allow binder to build if CPU_CACHE_VIVT is defined.
Several uses of the new functions are added here. More
to follow in subsequent patches.
(cherry picked from commit 8ced0c6231)
Bug: 67668716
Change-Id: I6a93d2396d0a80c352a1d563fc7fb523a753e38c
Signed-off-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit bfc28d4c046d2a1aea5db66508e7fbb65a31a4a9
Author: Todd Kjos <tkjos@android.com>
Date: Fri Feb 8 10:35:14 2019 -0800
UPSTREAM: binder: create userspace-to-binder-buffer copy function
The binder driver uses a vm_area to map the per-process
binder buffer space. For 32-bit android devices, this is
now taking too much vmalloc space. This patch removes
the use of vm_area when copying the transaction data
from the sender to the buffer space. Instead of using
copy_from_user() for multi-page copies, it now uses
binder_alloc_copy_user_to_buffer() which uses kmap()
and kunmap() to map each page, and uses copy_from_user()
for copying to that page.
(cherry picked from 1a7c3d9bb7)
Bug: 67668716
Signed-off-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Change-Id: I59ff83455984fce4626476e30601ed8b99858a92
commit 89a1a65d35200d8ca94c865f061f11af41a8ced7
Author: Todd Kjos <tkjos@android.com>
Date: Mon Jan 14 09:10:21 2019 -0800
FROMGIT: binder: create node flag to request sender's security context
To allow servers to verify client identity, allow a node
flag to be set that causes the sender's security context
to be delivered with the transaction. The BR_TRANSACTION
command is extended in BR_TRANSACTION_SEC_CTX to
contain a pointer to the security context string.
Signed-off-by: Todd Kjos <tkjos@google.com>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit ec74136dedhttps://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
master)
Change-Id: I44496546e2d0dc0022f818a45cd52feb1c1a92cb
Signed-off-by: Todd Kjos <tkjos@google.com>
commit 4afd6d2498ecd54e4211c6e47d8956a686a52ee3
Author: Todd Kjos <tkjos@android.com>
Date: Wed Dec 5 15:19:26 2018 -0800
UPSTREAM: binder: filter out nodes when showing binder procs
When dumping out binder transactions via a debug node,
the output is too verbose if a process has many nodes.
Change the output for transaction dumps to only display
nodes with pending async transactions.
Signed-off-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit ecd589d8f5)
Bug: 112037142
Change-Id: Iaa76ebdc844037ce1ee3bf2e590676790a959cef
commit 72e3c1d60a499bfa547d962a150082f47bfb16af
Author: Todd Kjos <tkjos@android.com>
Date: Tue Nov 6 15:55:32 2018 -0800
binder: fix race that allows malicious free of live buffer
commit 7bada55ab5 upstream.
Malicious code can attempt to free buffers using the BC_FREE_BUFFER
ioctl to binder. There are protections against a user freeing a buffer
while in use by the kernel, however there was a window where
BC_FREE_BUFFER could be used to free a recently allocated buffer that
was not completely initialized. This resulted in a use-after-free
detected by KASAN with a malicious test program.
This window is closed by setting the buffer's allow_user_free attribute
to 0 when the buffer is allocated or when the user has previously freed
it instead of waiting for the caller to set it. The problem was that
when the struct buffer was recycled, allow_user_free was stale and set
to 1 allowing a free to go through.
Signed-off-by: Todd Kjos <tkjos@google.com>
Acked-by: Arve Hjønnevåg <arve@android.com>
Cc: stable <stable@vger.kernel.org> # 4.14
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit c7940ee7e55f4caec80ab646b7f9d495ee2677c6
Author: Martijn Coenen <maco@android.com>
Date: Sat Aug 25 13:50:56 2018 -0700
UPSTREAM: binder: Add BINDER_GET_NODE_INFO_FOR_REF ioctl.
This allows the context manager to retrieve information about nodes
that it holds a reference to, such as the current number of
references to those nodes.
Such information can for example be used to determine whether the
servicemanager is the only process holding a reference to a node.
This information can then be passed on to the process holding the
node, which can in turn decide whether it wants to shut down to
reduce resource usage.
Bug: 79983843
Change-Id: I21e52ed1ca2137f7bfdc0300365fb1285b7e3d70
Signed-off-by: Martijn Coenen <maco@android.com>
commit afd02b5ead68a94eb6bf1bf5234271687d7eb461
Author: Minchan Kim <minchan@kernel.org>
Date: Thu Aug 23 14:29:56 2018 +0900
android: binder: fix the race mmap and alloc_new_buf_locked
There is RaceFuzzer report like below because we have no lock to close
below the race between binder_mmap and binder_alloc_new_buf_locked.
To close the race, let's use memory barrier so that if someone see
alloc->vma is not NULL, alloc->vma_vm_mm should be never NULL.
(I didn't add stable mark intentionallybecause standard android
userspace libraries that interact with binder (libbinder & libhwbinder)
prevent the mmap/ioctl race. - from Todd)
"
Thread interleaving:
CPU0 (binder_alloc_mmap_handler) CPU1 (binder_alloc_new_buf_locked)
===== =====
// drivers/android/binder_alloc.c
// #L718 (v4.18-rc3)
alloc->vma = vma;
// drivers/android/binder_alloc.c
// #L346 (v4.18-rc3)
if (alloc->vma == NULL) {
...
// alloc->vma is not NULL at this point
return ERR_PTR(-ESRCH);
}
...
// #L438
binder_update_page_range(alloc, 0,
(void *)PAGE_ALIGN((uintptr_t)buffer->data),
end_page_addr);
// In binder_update_page_range() #L218
// But still alloc->vma_vm_mm is NULL here
if (need_mm && mmget_not_zero(alloc->vma_vm_mm))
alloc->vma_vm_mm = vma->vm_mm;
Crash Log:
==================================================================
BUG: KASAN: null-ptr-deref in __atomic_add_unless include/asm-generic/atomic-instrumented.h:89 [inline]
BUG: KASAN: null-ptr-deref in atomic_add_unless include/linux/atomic.h:533 [inline]
BUG: KASAN: null-ptr-deref in mmget_not_zero include/linux/sched/mm.h:75 [inline]
BUG: KASAN: null-ptr-deref in binder_update_page_range+0xece/0x18e0 drivers/android/binder_alloc.c:218
Write of size 4 at addr 0000000000000058 by task syz-executor0/11184
CPU: 1 PID: 11184 Comm: syz-executor0 Not tainted 4.18.0-rc3 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.8.2-0-g33fbe13 by qemu-project.org 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x16e/0x22c lib/dump_stack.c:113
kasan_report_error mm/kasan/report.c:352 [inline]
kasan_report+0x163/0x380 mm/kasan/report.c:412
check_memory_region_inline mm/kasan/kasan.c:260 [inline]
check_memory_region+0x140/0x1a0 mm/kasan/kasan.c:267
kasan_check_write+0x14/0x20 mm/kasan/kasan.c:278
__atomic_add_unless include/asm-generic/atomic-instrumented.h:89 [inline]
atomic_add_unless include/linux/atomic.h:533 [inline]
mmget_not_zero include/linux/sched/mm.h:75 [inline]
binder_update_page_range+0xece/0x18e0 drivers/android/binder_alloc.c:218
binder_alloc_new_buf_locked drivers/android/binder_alloc.c:443 [inline]
binder_alloc_new_buf+0x467/0xc30 drivers/android/binder_alloc.c:513
binder_transaction+0x125b/0x4fb0 drivers/android/binder.c:2957
binder_thread_write+0xc08/0x2770 drivers/android/binder.c:3528
binder_ioctl_write_read.isra.39+0x24f/0x8e0 drivers/android/binder.c:4456
binder_ioctl+0xa86/0xf34 drivers/android/binder.c:4596
vfs_ioctl fs/ioctl.c:46 [inline]
do_vfs_ioctl+0x154/0xd40 fs/ioctl.c:686
ksys_ioctl+0x94/0xb0 fs/ioctl.c:701
__do_sys_ioctl fs/ioctl.c:708 [inline]
__se_sys_ioctl fs/ioctl.c:706 [inline]
__x64_sys_ioctl+0x43/0x50 fs/ioctl.c:706
do_syscall_64+0x167/0x4b0 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
"
Signed-off-by: Todd Kjos <tkjos@google.com>
Signed-off-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Martijn Coenen <maco@android.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 3ed5fd0f095e9d6fe5f33f909165a8cd596e8b46
Author: Sherry Yang <sherryy@android.com>
Date: Tue Aug 7 12:57:13 2018 -0700
android: binder: Rate-limit debug and userspace triggered err msgs
Use rate-limited debug messages where userspace can trigger
excessive log spams.
Acked-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Sherry Yang <sherryy@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 8129fb3ee7af23a888383aa23647c9d576ecdfef
Author: Sherry Yang <sherryy@android.com>
Date: Thu Jul 26 17:17:17 2018 -0700
android: binder: Show extra_buffers_size in trace
Add extra_buffers_size to the binder_transaction_alloc_buf tracepoint.
Acked-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Sherry Yang <sherryy@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 3b0bbcb65457ddec6fbee72bb26002e2bba16089
Author: Guenter Roeck <linux@roeck-us.net>
Date: Mon Jul 23 14:41:38 2018 -0700
android: binder: Include asm/cacheflush.h after linux/ include files
If asm/cacheflush.h is included first, the following build warnings are
seen with sparc32 builds.
In file included from arch/sparc/include/asm/cacheflush.h:11:0,
from drivers/android/binder.c:54:
arch/sparc/include/asm/cacheflush_32.h:40:37: warning:
'struct page' declared inside parameter list will not be visible
outside of this definition or declaration
Moving the asm/ include after linux/ includes solves the problem.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit e8a4948f49629c6ab122339f46908884d55ca7e9
Author: Guenter Roeck <linux@roeck-us.net>
Date: Mon Jul 23 14:47:23 2018 -0700
android: binder_alloc: Include asm/cacheflush.h after linux/ include files
If asm/cacheflush.h is included first, the following build warnings are
seen with sparc32 builds.
In file included from ./arch/sparc/include/asm/cacheflush.h:11:0,
from drivers/android/binder_alloc.c:20:
./arch/sparc/include/asm/cacheflush_32.h:40:37: warning:
'struct page' declared inside parameter list
Moving the asm/ include after linux/ includes fixes the problem.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 8cae6730ef318700ab3a0db3ef43ee6a5e5856c8
Author: Geert Uytterhoeven <geert@linux-m68k.org>
Date: Wed Jun 6 14:40:56 2018 +0200
android: binder: Drop dependency on !M68K
As of commit 7124330dab ("m68k/uaccess: Revive 64-bit
get_user()"), the 64-bit Android binder interface builds fine on m68k.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
verify:
p212
Change-Id: I1bac2c5345bcac64a3890f1688c1ecc4a3654a79
Signed-off-by: Tao Zeng <tao.zeng@amlogic.com>
