Pull CIFS fixes from Steve French:
"Two low risk, small fixes, that fix cifs regressions introduced in
3.7."
* 'for-linus' of git://git.samba.org/sfrench/cifs-2.6:
CIFS: Fix wrong buffer pointer usage in smb_set_file_info
cifs: fix writeback race with file that is growing
Pull target fix from Nicholas Bellinger:
"So just a single target fix for v3.7.0 this time around from Roland to
address a aborted command bug w/ tcm_qla2xxx fabric ports.
Also, there is one outstanding IBLOCK + virtio-blk bug that is still
being tracked down effecting v3.6.x, but AFAICT thus far this appears
to be a bug outside of target code."
* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
target: Fix handling of aborted commands
When a cpu enters S3 state, the FPU state is lost.
After resuming for S3, if we try to lazy restore the FPU for a process running
on the same CPU, this will result in a corrupted FPU context.
Ensure that "fpu_owner_task" is properly invalided when (re-)initializing a CPU,
so nobody will try to lazy restore a state which doesn't exist in the hardware.
Tested with a 64-bit kernel on a 4-core Ivybridge CPU with eagerfpu=off,
by doing thousands of suspend/resume cycles with 4 processes doing FPU
operations running. Without the patch, a process is killed after a
few hundreds cycles by a SIGFPE.
Cc: Duncan Laurie <dlaurie@chromium.org>
Cc: Olof Johansson <olofj@chromium.org>
Cc: <stable@kernel.org> v3.4+ # for 3.4 need to replace this_cpu_write by percpu_write
Signed-off-by: Vincent Palatin <vpalatin@chromium.org>
Link: http://lkml.kernel.org/r/1354306532-1014-1-git-send-email-vpalatin@chromium.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Pull DRM fixes from Dave Airlie:
"Just driver fixes, nothing major, except maybe the Ironlake rc6
disable:
- intel:
* revert ironlake rc6 - we still have one ilk regression, but this
gets rid of one big one
* turn off cloning
* a directed fix for Apple edp
- radeon: one modesetting fix
- exynos: minor fixes"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
radeon: fix pll/ctrc mapping on dce2 and dce3 hardware
Revert "drm/i915: enable rc6 on ilk again"
drm/i915: do not default to 18 bpp for eDP if missing from VBT
drm/exynos: Fix potential NULL pointer dereference in exynos_drm_encoder.c
drm/exynos: Make exynos4/5_fimd_driver_data static
drm/exynos: fix overlay updating issue
drm/exynos: remove unnecessary code.
drm/exynos: fix linux framebuffer address setting.
drm/i915: disable cloning on sdvo
Merge misc fixes from Andrew Morton:
"Seven fixes, some of them fingers-crossed :("
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (7 patches)
drivers/rtc/rtc-tps65910.c: fix invalid pointer access on _remove()
mm: soft offline: split thp at the beginning of soft_offline_page()
mm: avoid waking kswapd for THP allocations when compaction is deferred or contended
revert "Revert "mm: remove __GFP_NO_KSWAPD""
mm: vmscan: fix endless loop in kswapd balancing
mm/vmemmap: fix wrong use of virt_to_page
mm: compaction: fix return value of capture_free_page()
These are three fixes for the Marvell EBU family and one for the Samsung
s3c platforms. All of them are obvious should still make it into 3.7.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"These are three fixes for the Marvell EBU family and one for the
Samsung s3c platforms. All of them are obvious should still make it
into 3.7."
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: Kirkwood: Update PCI-E fixup
Dove: Fix irq_to_pmu()
Dove: Attempt to fix PMU/RTC interrupts
ARM: S3C24XX: Fix potential NULL pointer dereference error
These were originally prepared by Krzysztof Halasa but not submitted
in time for v3.7 due to some confusion about how ixp4xx patches should
be handled. Jason Cooper thankfully offered to help out sending the
patches upstream through arm-soc now, but given the timing, we could
as well delay them for 3.8.
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Merge tag 'ixp4xx-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM ixp4xx bug fixes from Arnd Bergmann:
"These were originally prepared by Krzysztof Halasa but not submitted
in time for v3.7 due to some confusion about how ixp4xx patches should
be handled. Jason Cooper thankfully offered to help out sending the
patches upstream through arm-soc now, but given the timing, we could
as well delay them for 3.8."
* tag 'ixp4xx-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
IXP4xx: use __iomem for MMIO
IXP4xx: map CPU config registers within VMALLOC region.
IXP4xx: Always ioremap() Queue Manager MMIO region at boot.
ixp4xx: Declare MODULE_FIRMWARE usage
IXP4xx crypto: MOD_AES{128,192,256} already include key size.
WAN: Remove redundant HDLC info printed by IXP4xx HSS driver.
IXP4xx: Remove time limit for PCI TRDY to enable use of slow devices.
IXP4xx: ixp4xx_crypto driver requires Queue Manager and NPE drivers.
IXP4xx: HW pseudo-random generator is available on IXP45x/46x only.
IXP4xx: Fix off-by-one bug in Goramo MultiLink platform.
IXP4xx: Fix Goramo MultiLink platform compilation.
Pull final ARM fix from Russell King:
"One final fix, spotted by Will, to do with what happens when we boot a
SMP kernel on UP."
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: 7586/1: sp804: set cpumask to cpu_possible_mask for clock event device
The tps65910_rtc data is registered as the platform driver data in
_probe(= ). Therefore the tps65910_rtc should be used on unregistering
the rtc device. And device pointer should be retrieved from the
platform_device structure.
This patch fixes the below oops:
Unable to handle kernel NULL pointer dereference at virtual address 00000008
Modules linked in: rtc_tps65910(-)
CPU: 0 Not tainted (3.7.0-rc7-next-20121128-g6b1f974-dirty #7)
PC is at tps65910_rtc_alarm_irq_enable+0x20/0x2c [rtc_tps65910]
(tps65910_rtc_alarm_irq_enable+0x20/0x2c [rtc_tps65910])
(tps65910_rtc_remove+0x18/0x28 [rtc_tps65910])
(platform_drv_remove+0x18/0x1c)
(__device_release_driver+0x70/0xcc)
(driver_detach+0xb4/0xb8)
(bus_remove_driver+0x7c/0xc0)
(sys_delete_module+0x148/0x21c)
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When we try to soft-offline a thp tail page, put_page() is called on the
tail page unthinkingly and VM_BUG_ON is triggered in put_compound_page().
This patch splits thp before going into the main body of soft-offlining.
Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Andi Kleen <andi.kleen@intel.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
With "mm: vmscan: scale number of pages reclaimed by reclaim/compaction
based on failures" reverted, Zdenek Kabelac reported the following
Hmm, so it's just took longer to hit the problem and observe
kswapd0 spinning on my CPU again - it's not as endless like before -
but still it easily eats minutes - it helps to turn off Firefox
or TB (memory hungry apps) so kswapd0 stops soon - and restart
those apps again. (And I still have like >1GB of cached memory)
kswapd0 R running task 0 30 2 0x00000000
Call Trace:
preempt_schedule+0x42/0x60
_raw_spin_unlock+0x55/0x60
put_super+0x31/0x40
drop_super+0x22/0x30
prune_super+0x149/0x1b0
shrink_slab+0xba/0x510
The sysrq+m indicates the system has no swap so it'll never reclaim
anonymous pages as part of reclaim/compaction. That is one part of the
problem but not the root cause as file-backed pages could also be
reclaimed.
The likely underlying problem is that kswapd is woken up or kept awake
for each THP allocation request in the page allocator slow path.
If compaction fails for the requesting process then compaction will be
deferred for a time and direct reclaim is avoided. However, if there
are a storm of THP requests that are simply rejected, it will still be
the the case that kswapd is awake for a prolonged period of time as
pgdat->kswapd_max_order is updated each time. This is noticed by the
main kswapd() loop and it will not call kswapd_try_to_sleep(). Instead
it will loopp, shrinking a small number of pages and calling
shrink_slab() on each iteration.
This patch defers when kswapd gets woken up for THP allocations. For
!THP allocations, kswapd is always woken up. For THP allocations,
kswapd is woken up iff the process is willing to enter into direct
reclaim/compaction.
[akpm@linux-foundation.org: fix typo in comment]
Signed-off-by: Mel Gorman <mgorman@suse.de>
Cc: Zdenek Kabelac <zkabelac@redhat.com>
Cc: Seth Jennings <sjenning@linux.vnet.ibm.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Robert Jennings <rcj@linux.vnet.ibm.com>
Cc: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Cc: Glauber Costa <glommer@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It apepars that this patch was innocent, and we hope that "mm: avoid
waking kswapd for THP allocations when compaction is deferred or
contended" will fix the final kswapd-spinning cause.
Cc: Zdenek Kabelac <zkabelac@redhat.com>
Cc: Seth Jennings <sjenning@linux.vnet.ibm.com>
Cc: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Cc: Jiri Slaby <jirislaby@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Robert Jennings <rcj@linux.vnet.ibm.com>
Cc: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Kswapd does not in all places have the same criteria for a balanced
zone. Zones are only being reclaimed when their high watermark is
breached, but compaction checks loop over the zonelist again when the
zone does not meet the low watermark plus two times the size of the
allocation. This gets kswapd stuck in an endless loop over a small
zone, like the DMA zone, where the high watermark is smaller than the
compaction requirement.
Add a function, zone_balanced(), that checks the watermark, and, for
higher order allocations, if compaction has enough free memory. Then
use it uniformly to check for balanced zones.
This makes sure that when the compaction watermark is not met, at least
reclaim happens and progress is made - or the zone is declared
unreclaimable at some point and skipped entirely.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reported-by: George Spelvin <linux@horizon.com>
Reported-by: Johannes Hirte <johannes.hirte@fem.tu-ilmenau.de>
Reported-by: Tomas Racek <tracek@redhat.com>
Tested-by: Johannes Hirte <johannes.hirte@fem.tu-ilmenau.de>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit ef6c5be658 ("fix incorrect NR_FREE_PAGES accounting (appears
like memory leak)") fixes a NR_FREE_PAGE accounting leak but missed the
return value which was also missed by this reviewer until today.
That return value is used by compaction when adding pages to a list of
isolated free pages and without this follow-up fix, there is a risk of
free list corruption.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Cc: Dave Hansen <dave@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Noticed by Pavel Roskin; the thing in his patch I disagree with
was compensating for that shite in callbacks instead of fixing
it once in the iterator itself.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
We are leaking fattr and fhandle if we decide that dentry is not to
be invalidated, after all (e.g. happens to be a mountpoint). Just
free both before that...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
We really don't want to look at the block size for the raw block device
accesses in fs/block-dev.c, because it may be changing from under us.
So get rid of the max_block logic entirely, since the caller should
already have done it anyway.
That leaves the only user of this function in fs/buffer.c, so move the
whole function there and make it static.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Since directio can work on a raw block device, and the block size of the
device can change under it, we need to do the same thing that
fs/buffer.c now does: read the block size a single time, using
ACCESS_ONCE().
Reading it multiple times can get different results, which will then
confuse the code because it actually encodes the i_blksize in
relationship to the underlying logical blocksize.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This reverts the block-device direct access code to the previous
unlocked code, now that fs/buffer.c no longer needs external locking.
With this, fs/block_dev.c is back to the original version, apart from a
whitespace cleanup that I didn't want to revert.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This makes the buffer size handling be a per-page thing, which allows us
to not have to worry about locking too much when changing the buffer
size. If a page doesn't have buffers, we still need to read the block
size from the inode, but we can do that with ACCESS_ONCE(), so that even
if the size is changing, we get a consistent value.
This doesn't convert all functions - many of the buffer functions are
used purely by filesystems, which in turn results in the buffer size
being fixed at mount-time. So they don't have the same consistency
issues that the raw device access can have.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Race between bonding_store_slaves_active() and slave manipulation
functions. The bond_for_each_slave use in bonding_store_slaves_active()
is not protected by any synchronization mechanism.
NULL pointer dereference is easy to reach.
Fixed by acquiring the bond->lock for the slave walk.
v2: Make description text < 75 columns
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The module can be loaded with arp_ip_target="255.255.255.255" which makes
it impossible to remove as the function in sysfs checks for that value,
so we make the parameter checks consistent with sysfs.
v2: Fix formatting
v3: Make description text < 75 columns
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
First I would give three observations which will be used later.
Observation 1: if (delayed_work_pending(wq)) cancel_delayed_work(wq)
This usage is wrong because the pending bit is cleared just before the
work's fn is executed and if the function re-arms itself we might end up
with the work still running. It's safe to call cancel_delayed_work_sync()
even if the work is not queued at all.
Observation 2: Use of INIT_DELAYED_WORK()
Work needs to be initialized only once prior to (de/en)queueing.
Observation 3: IFF_UP is set only after ndo_open is called
Related race conditions:
1. Race between bonding_store_miimon() and bonding_store_arp_interval()
Because of Obs.1 we can end up having both works enqueued.
2. Multiple races with INIT_DELAYED_WORK()
Since the works are not protected by anything between INIT_DELAYED_WORK()
and calls to (en/de)queue it is possible for races between the following
functions:
(races are also possible between the calls to INIT_DELAYED_WORK()
and workqueue code)
bonding_store_miimon() - bonding_store_arp_interval(), bond_close(),
bond_open(), enqueued functions
bonding_store_arp_interval() - bonding_store_miimon(), bond_close(),
bond_open(), enqueued functions
3. By Obs.1 we need to change bond_cancel_all()
Bugs 1 and 2 are fixed by moving all work initializations in bond_open
which by Obs. 2 and Obs. 3 and the fact that we make sure that all works
are cancelled in bond_close(), is guaranteed not to have any work
enqueued.
Also RTNL lock is now acquired in bonding_store_miimon/arp_interval so
they can't race with bond_close and bond_open. The opposing work is
cancelled only if the IFF_UP flag is set and it is cancelled
unconditionally. The opposing work is already cancelled if the interface
is down so no need to cancel it again. This way we don't need new
synchronizations for the bonding workqueue. These bugs (and fixes) are
tied together and belong in the same patch.
Note: I have left 1 line intentionally over 80 characters (84) because I
didn't like how it looks broken down. If you'd prefer it otherwise,
then simply break it.
v2: Make description text < 75 columns
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
From Kukjin Kim <kgene.kim@samsung.com>:
Samsung fixes for v3.7
* 'v3.7-samsung-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: S3C24XX: Fix potential NULL pointer dereference error
This would have been ok to delay to 3.8 according to Kukjin, but since
it's an obvious bug fix and a potential NULL pointer dereference, it
seem appropriate for a late 3.7 submission.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Eliminate an erroneous invocation of rproc_shutdown inside
the error path of rproc_virtio_find_vqs.
Reported-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Pull networking fixes from David Miller:
"Some more fixes trickled in over the past few days:
1) PIM device names can overflow the IFNAMSIZ buffer unless we
properly limit the allowed indexes, fix from Eric Dumazet.
2) Under heavy load we can OOPS in icmp reply processing due to an
unchecked inet_putpeer() call. Fix from Neal Cardwell.
3) SCTP round trip calculations need to use 64-bit math to avoid
overflows, fix from Schoch Christian.
4) Fix a memory leak and an error return flub in SCTP and IRDA
triggerable by userspace. Fix from Tommi Rantala and found by the
syscall fuzzer (trinity).
5) MLX4 driver gives bogus size to memcpy() call, fix from Amir
Vadai.
6) Fix length calculation in VHOST descriptor translation, from
Michael S Tsirkin.
7) Ambassador ATM driver loops forever while loading firmware, fix
from Dan Carpenter.
8) Over MTU packets in openvswitch warn about wrong device, fix from
Jesse Gross.
9) Netfilter IPSET's netlink code can overrun a string buffer because
it's not properly limited to IFNAMSIZ. Fix from Florian Westphal.
10) PCAN USB driver sets wrong timestamp in SKB, from Oliver Hartkopp.
11) Make sure the RX ifindex always has a valid value in the CAN BCM
driver, even if we haven't received a frame yet. Fix also from
Oliver Hartkopp."
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
team: fix hw_features setup
atm: forever loop loading ambassador firmware
vhost: fix length for cross region descriptor
irda: irttp: fix memory leak in irttp_open_tsap() error path
net: qmi_wwan: add Huawei E173
net/mlx4_en: Can set maxrate only for TC0
sctp: Error in calculation of RTTvar
sctp: fix -ENOMEM result with invalid user space pointer in sendto() syscall
sctp: fix memory leak in sctp_datamsg_from_user() when copy from user space fails
net: ipmr: limit MRT_TABLE identifiers
ipv4: avoid passing NULL to inet_putpeer() in icmpv4_xrlim_allow()
can: bcm: initialize ifindex for timeouts without previous frame reception
can: peak_usb: fix hwtstamp assignment
netfilter: ipset: fix netiface set name overflow
openvswitch: Store flow key len if ARP opcode is not request or reply.
openvswitch: Print device when warning about over MTU packets.
incidentally, declaring a local variable as __user (!) to make
sparse STFU is really sick. Especially since sparse had been
100% right - it *is* a bug.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Some internal kernel symbols were referenced in the exported setup.h.
This splits out the internal bits from the exported uapi bits.
Signed-off-by: Mark Salter <msalter@redhat.com>
Do this in the same way bonding does. This fixed setup resolves performance
issues when using some cards with certain offloading.
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
There was a forever loop introduced here when we converted this to
request_firmware() back in 2008.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Chas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: David S. Miller <davem@davemloft.net>
If a single descriptor crosses a region, the
second chunk length should be decremented
by size translated so far, instead it includes
the full descriptor length.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Cleanup the memory we allocated earlier in irttp_open_tsap() when we hit
this error path. The leak goes back to at least 1da177e4
("Linux-2.6.12-rc2").
Discovered with Trinity (the syscall fuzzer).
Signed-off-by: Tommi Rantala <tt.rantala@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The Huawei E173 is a QMI/wwan device which normally appear
as 12d1:1436 in Linux. The descriptors displayed in that
mode will be picked up by cdc_ether. But the modem has
another mode with a different device ID and a slightly
different set of descriptors. This is the mode used by
Windows like this:
3Modem: USB\VID_12D1&PID_140C&MI_00\6&3A1D2012&0&0000
Networkcard: USB\VID_12D1&PID_140C&MI_01\6&3A1D2012&0&0001
Appli.Inter: USB\VID_12D1&PID_140C&MI_02\6&3A1D2012&0&0002
PC UI Inter: USB\VID_12D1&PID_140C&MI_03\6&3A1D2012&0&0003
Reported-by: Thomas Schäfer <tschaefer@t-online.de>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
The calculation of RTTVAR involves the subtraction of two unsigned
numbers which
may causes rollover and results in very high values of RTTVAR when RTT > SRTT.
With this patch it is possible to set RTOmin = 1 to get the minimum of RTO at
4 times the clock granularity.
Change Notes:
v2)
*Replaced abs() by abs64() and long by __s64, changed patch
description.
Signed-off-by: Christian Schoch <e0326715@student.tuwien.ac.at>
CC: Vlad Yasevich <vyasevich@gmail.com>
CC: Sridhar Samudrala <sri@us.ibm.com>
CC: Neil Horman <nhorman@tuxdriver.com>
CC: linux-sctp@vger.kernel.org
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Consider the following program, that sets the second argument to the
sendto() syscall incorrectly:
#include <string.h>
#include <arpa/inet.h>
#include <sys/socket.h>
int main(void)
{
int fd;
struct sockaddr_in sa;
fd = socket(AF_INET, SOCK_STREAM, 132 /*IPPROTO_SCTP*/);
if (fd < 0)
return 1;
memset(&sa, 0, sizeof(sa));
sa.sin_family = AF_INET;
sa.sin_addr.s_addr = inet_addr("127.0.0.1");
sa.sin_port = htons(11111);
sendto(fd, NULL, 1, 0, (struct sockaddr *)&sa, sizeof(sa));
return 0;
}
We get -ENOMEM:
$ strace -e sendto ./demo
sendto(3, NULL, 1, 0, {sa_family=AF_INET, sin_port=htons(11111), sin_addr=inet_addr("127.0.0.1")}, 16) = -1 ENOMEM (Cannot allocate memory)
Propagate the error code from sctp_user_addto_chunk(), so that we will
tell user space what actually went wrong:
$ strace -e sendto ./demo
sendto(3, NULL, 1, 0, {sa_family=AF_INET, sin_port=htons(11111), sin_addr=inet_addr("127.0.0.1")}, 16) = -1 EFAULT (Bad address)
Noticed while running Trinity (the syscall fuzzer).
Signed-off-by: Tommi Rantala <tt.rantala@gmail.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Trinity (the syscall fuzzer) discovered a memory leak in SCTP,
reproducible e.g. with the sendto() syscall by passing invalid
user space pointer in the second argument:
#include <string.h>
#include <arpa/inet.h>
#include <sys/socket.h>
int main(void)
{
int fd;
struct sockaddr_in sa;
fd = socket(AF_INET, SOCK_STREAM, 132 /*IPPROTO_SCTP*/);
if (fd < 0)
return 1;
memset(&sa, 0, sizeof(sa));
sa.sin_family = AF_INET;
sa.sin_addr.s_addr = inet_addr("127.0.0.1");
sa.sin_port = htons(11111);
sendto(fd, NULL, 1, 0, (struct sockaddr *)&sa, sizeof(sa));
return 0;
}
As far as I can tell, the leak has been around since ~2003.
Signed-off-by: Tommi Rantala <tt.rantala@gmail.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds
Vincent Palatin
Kim, Milo
Naoya Horiguchi
Mel Gorman
Andrew Morton
Johannes Weiner
Jianguo Wu
John W. Linville
Al Viro
nikolay@redhat.com
Arnd Bergmann
Ohad Ben-Cohen
David S. Miller
Mark Salter
Jiri Pirko
Dan Carpenter
Michael S. Tsirkin
Tommi Rantala
Bjørn Mork
Amir Vadai
Schoch Christian