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commit 240630e61870e62e39a97225048f9945848fa5f5 upstream.
There have been several reports of LPM related hard freezes about once
a day on multiple Lenovo 50 series models. Strange enough these reports
where not disk model specific as LPM issues usually are and some users
with the exact same disk + laptop where seeing them while other users
where not seeing these issues.
It turns out that enabling LPM triggers a firmware bug somewhere, which
has been fixed in later BIOS versions.
This commit adds a new ahci_broken_lpm() function and a new ATA_FLAG_NO_LPM
for dealing with this.
The ahci_broken_lpm() function contains DMI match info for the 4 models
which are known to be affected by this and the DMI BIOS date field for
known good BIOS versions. If the BIOS date is older then the one in the
table LPM will be disabled and a warning will be printed.
Note the BIOS dates are for known good versions, some older versions may
work too, but we don't know for sure, the table is using dates from BIOS
versions for which users have confirmed that upgrading to that version
makes the problem go away.
Unfortunately I've been unable to get hold of the reporter who reported
that BIOS version 2.35 fixed the problems on the W541 for him. I've been
able to verify the DMI_SYS_VENDOR and DMI_PRODUCT_VERSION from an older
dmidecode, but I don't know the exact BIOS date as reported in the DMI.
Lenovo keeps a changelog with dates in their release notes, but the
dates there are the release dates not the build dates which are in DMI.
So I've chosen to set the date to which we compare to one day past the
release date of the 2.34 BIOS. I plan to fix this with a follow up
commit once I've the necessary info.
Cc: stable@vger.kernel.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 80660f20252d6f76c9f203874ad7c7a4a8508cf8 upstream.
The function return values are confusing with the way the function is
named. We expect a true or false return value but it actually returns
0/-errno. This makes the code very confusing. Changing the return values
to return a bool where if DAX is supported then return true and no DAX
support returns false.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit ba23cba9b3bdc967aabdc6ff1e3e9b11ce05bb4f upstream.
Change bdev_dax_supported so it takes a bdev parameter. This enables
multi-device filesystems like xfs to check that a dax device can work for
the particular filesystem. Once that's in place, actually fix all the
parts of XFS where we need to be able to distinguish between datadev and
rtdev.
This patch fixes the problem where we screw up the dax support checking
in xfs if the datadev and rtdev have different dax capabilities.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
[rez: Re-added __bdev_dax_supported() for !CONFIG_FS_DAX cases]
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 8f732850df1b2b4d8d719f7e606dfb3050e7ea11 upstream.
Detected on the Dell XPS 9365.
The laptop has 2 devices that benefit from the hid-generic auto-unbinding.
When those 2 devices are presented to the userspace, udev loads both wacom and
hid-multitouch. When this happens, the code in __hid_bus_reprobe_drivers() is
called concurrently and the second device gets reprobed twice.
An other bug in the power_supply subsystem prevent to remove the wacom driver
if it just finished its initialization, which basically kills the wacom node.
[jkosina@suse.cz: reformat changelog a bit]
Fixes c17a7476e4c4 ("HID: core: rewrite the hid-generic automatic unbind")
Cc: stable@vger.kernel.org # v4.17
Tested-by: Mario Limonciello <mario.limonciello@dell.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit d2d2e3c46be5d6dd8001d0eebdf7cafb9bc7006b upstream.
Sometimes memory resource may be overlapping with
SystemMemory Operation Region by design, for example if the
memory region is used as a mailbox for communication with a
firmware in the system. One occasion of such mailboxes is
USB Type-C Connector System Software Interface (UCSI).
With regions like that, it is important that the driver is
able to map the memory with the requirements it has. For
example, the driver should be allowed to map the memory as
non-cached memory. However, if the operation region has been
accessed before the driver has mapped the memory, the memory
has been marked as write-back by the time the driver is
loaded. That means the driver will fail to map the memory
if it expects non-cached memory.
To work around the problem, introducing helper that the
drivers can use to temporarily deactivate (unmap)
SystemMemory Operation Regions that overlap with their
IO memory.
Fixes: 8243edf44152 ("usb: typec: ucsi: Add ACPI driver")
Cc: stable@vger.kernel.org
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 15bfd21fbc5d35834b9ea383dc458a1f0c9e3434 upstream.
A device may have boundary restrictions where the number of sectors
between boundaries exceeds its max transfer size. In this case, we need
to cap the max size to the smaller of the two limits.
Reported-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Tested-by: Jitendra Bhivare <jitendra.bhivare@broadcom.com>
Cc: <stable@vger.kernel.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit d50d82faa0c964e31f7a946ba8aba7c715ca7ab0 upstream.
In kernel 4.17 I removed some code from dm-bufio that did slab cache
merging (commit 21bb13276768: "dm bufio: remove code that merges slab
caches") - both slab and slub support merging caches with identical
attributes, so dm-bufio now just calls kmem_cache_create and relies on
implicit merging.
This uncovered a bug in the slub subsystem - if we delete a cache and
immediatelly create another cache with the same attributes, it fails
because of duplicate filename in /sys/kernel/slab/. The slub subsystem
offloads freeing the cache to a workqueue - and if we create the new
cache before the workqueue runs, it complains because of duplicate
filename in sysfs.
This patch fixes the bug by moving the call of kobject_del from
sysfs_slab_remove_workfn to shutdown_cache. kobject_del must be called
while we hold slab_mutex - so that the sysfs entry is deleted before a
cache with the same attributes could be created.
Running device-mapper-test-suite with:
dmtest run --suite thin-provisioning -n /commit_failure_causes_fallback/
triggered:
Buffer I/O error on dev dm-0, logical block 1572848, async page read
device-mapper: thin: 253:1: metadata operation 'dm_pool_alloc_data_block' failed: error = -5
device-mapper: thin: 253:1: aborting current metadata transaction
sysfs: cannot create duplicate filename '/kernel/slab/:a-0000144'
CPU: 2 PID: 1037 Comm: kworker/u48:1 Not tainted 4.17.0.snitm+ #25
Hardware name: Supermicro SYS-1029P-WTR/X11DDW-L, BIOS 2.0a 12/06/2017
Workqueue: dm-thin do_worker [dm_thin_pool]
Call Trace:
dump_stack+0x5a/0x73
sysfs_warn_dup+0x58/0x70
sysfs_create_dir_ns+0x77/0x80
kobject_add_internal+0xba/0x2e0
kobject_init_and_add+0x70/0xb0
sysfs_slab_add+0xb1/0x250
__kmem_cache_create+0x116/0x150
create_cache+0xd9/0x1f0
kmem_cache_create_usercopy+0x1c1/0x250
kmem_cache_create+0x18/0x20
dm_bufio_client_create+0x1ae/0x410 [dm_bufio]
dm_block_manager_create+0x5e/0x90 [dm_persistent_data]
__create_persistent_data_objects+0x38/0x940 [dm_thin_pool]
dm_pool_abort_metadata+0x64/0x90 [dm_thin_pool]
metadata_operation_failed+0x59/0x100 [dm_thin_pool]
alloc_data_block.isra.53+0x86/0x180 [dm_thin_pool]
process_cell+0x2a3/0x550 [dm_thin_pool]
do_worker+0x28d/0x8f0 [dm_thin_pool]
process_one_work+0x171/0x370
worker_thread+0x49/0x3f0
kthread+0xf8/0x130
ret_from_fork+0x35/0x40
kobject_add_internal failed for :a-0000144 with -EEXIST, don't try to register things with the same name in the same directory.
kmem_cache_create(dm_bufio_buffer-16) failed with error -17
Link: http://lkml.kernel.org/r/alpine.LRH.2.02.1806151817130.6333@file01.intranet.prod.int.rdu2.redhat.com
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Reported-by: Mike Snitzer <snitzer@redhat.com>
Tested-by: Mike Snitzer <snitzer@redhat.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: <stable@vger.kernel.org>
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>
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commit e76e56823a318ca580be4cfc5a6a9269bc70abea upstream.
This commit fixes incorrect setting of reset bits for PCI/VGA and
PECI modules.
1. Reset bit for PCI/VGA is 8.
2. PECI reset bit is missing so added bit 10 as its reset bit.
Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>
Fixes: 15ed8ce5f84e ("clk: aspeed: Register gated clocks")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 7350cdd0257e73a37df57253fb9decd8effacd37 upstream.
Few kernel applications like SCST-iSER create CQ using ib_create_cq(),
where accessing CQ structures using rdma restrack tool leads to below NULL
pointer dereference. This patch saves caller kernel module name similar to
ib_alloc_cq().
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<ffffffff8132ca70>] skip_spaces+0x30/0x30
PGD 738bac067 PUD 8533f0067 PMD 0
Oops: 0000 [#1] SMP
R10: ffff88017fc03300 R11: 0000000000000246 R12: 0000000000000000
R13: ffff88082fa5a668 R14: ffff88017475a000 R15: 0000000000000000
FS: 00002b32726582c0(0000) GS:ffff88087fc40000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000008491a1000 CR4: 00000000003607e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
[<ffffffffc05af69c>] ? fill_res_name_pid+0x7c/0x90 [ib_core]
[<ffffffffc05af79f>] fill_res_cq_entry+0xef/0x170 [ib_core]
[<ffffffffc05af4c4>] res_get_common_dumpit+0x3c4/0x480 [ib_core]
[<ffffffffc05af5d3>] nldev_res_get_cq_dumpit+0x13/0x20 [ib_core]
[<ffffffff815bc1e7>] netlink_dump+0x117/0x2e0
[<ffffffff815bcb8b>] __netlink_dump_start+0x1ab/0x230
[<ffffffffc059fead>] ibnl_rcv_msg+0x11d/0x1f0 [ib_core]
[<ffffffffc05af5c0>] ? nldev_res_get_mr_dumpit+0x20/0x20 [ib_core]
[<ffffffffc059fd90>] ? rdma_nl_multicast+0x30/0x30 [ib_core]
[<ffffffff815bea49>] netlink_rcv_skb+0xa9/0xc0
[<ffffffffc05a0018>] ibnl_rcv+0x98/0xb0 [ib_core]
[<ffffffff815be132>] netlink_unicast+0xf2/0x1b0
[<ffffffff815be50f>] netlink_sendmsg+0x31f/0x6a0
[<ffffffff8156b580>] sock_sendmsg+0xb0/0xf0
[<ffffffff816ace9e>] ? _raw_spin_unlock_bh+0x1e/0x20
[<ffffffff8156f998>] ? release_sock+0x118/0x170
[<ffffffff8156b731>] SYSC_sendto+0x121/0x1c0
[<ffffffff81568340>] ? sock_alloc_file+0xa0/0x140
[<ffffffff81221265>] ? __fd_install+0x25/0x60
[<ffffffff8156c2ce>] SyS_sendto+0xe/0x10
[<ffffffff816b6c2a>] system_call_fastpath+0x16/0x1b
RIP [<ffffffff8132ca70>] skip_spaces+0x30/0x30
RSP <ffff88072be97760>
CR2: 0000000000000000
Cc: <stable@vger.kernel.org>
Fixes: f66c8ba4c9fa ("RDMA/core: Save kernel caller name when creating PD and CQ objects")
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit af8aab71370a692eaf7e7969ba5b1a455ac20113 upstream.
All threads queuing CQ entries on different CQs are unnecessarily
synchronized by a spin lock to check if the CQ kthread worker hasn't
been destroyed before queuing an CQ entry.
The lock used in 6efaf10f163d ("IB/rdmavt: Avoid queuing work into a
destroyed cq kthread worker") is a device global lock and will have
poor performance at scale as completions are entered from a large
number of CPUs.
Convert to use RCU where the read side of RCU is rvt_cq_enter() to
determine that the worker is alive prior to triggering the
completion event.
Apply write side RCU semantics in rvt_driver_cq_init() and
rvt_cq_exit().
Fixes: 6efaf10f163d ("IB/rdmavt: Avoid queuing work into a destroyed cq kthread worker")
Cc: <stable@vger.kernel.org> # 4.14.x
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Sebastian Sanchez <sebastian.sanchez@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 08bb558ac11ab944e0539e78619d7b4c356278bd upstream.
Make the MR writability flags check, which is performed in umem.c,
a static inline function in file ib_verbs.h
This allows the function to be used by low-level infiniband drivers.
Cc: <stable@vger.kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 2026d35741f2c3ece73c11eb7e4a15d7c2df9ebe upstream.
The function __builtin_expect returns long type (see the gcc
documentation), and so do macros likely and unlikely. Unfortunatelly, when
CONFIG_PROFILE_ANNOTATED_BRANCHES is selected, the macros likely and
unlikely expand to __branch_check__ and __branch_check__ truncates the
long type to int. This unintended truncation may cause bugs in various
kernel code (we found a bug in dm-writecache because of it), so it's
better to fix __branch_check__ to return long.
Link: http://lkml.kernel.org/r/alpine.LRH.2.02.1805300818140.24812@file01.intranet.prod.int.rdu2.redhat.com
Cc: Ingo Molnar <mingo@redhat.com>
Cc: stable@vger.kernel.org
Fixes: 1f0d69a9fc815 ("tracing: profile likely and unlikely annotations")
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit f642fb5864a6e3645edce6f85ffe7b44d5e9b990 upstream.
Add a new function to "adjust" the current fixed UV memory block size
of 2GB so it can be changed to a different physical boundary. This is
out of necessity so arch dependent code can accommodate specific BIOS
requirements which can align these new PMEM modules at less than the
default boundaries.
A "set order" type of function was used to insure that the memory block
size will be a power of two value without requiring a validity check.
64GB was chosen as the upper limit for memory block size values to
accommodate upcoming 4PB systems which have 6 more bits of physical
address space (46 becoming 52).
Signed-off-by: Mike Travis <mike.travis@hpe.com>
Reviewed-by: Andrew Banman <andrew.banman@hpe.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Dimitri Sivanich <dimitri.sivanich@hpe.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Russ Anderson <russ.anderson@hpe.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dan.j.williams@intel.com
Cc: jgross@suse.com
Cc: kirill.shutemov@linux.intel.com
Cc: mhocko@suse.com
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/lkml/20180524201711.609546602@stormcage.americas.sgi.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit d340ebd696f921d3ad01b8c0c29dd38f2ad2bf3e upstream.
The upcoming fix for the -EBUSY return from affinity settings requires to
use the irq_move_irq() functionality even on irq remapped interrupts. To
avoid the out of line call, move the check for the pending bit into an
inline helper.
Preparatory change for the real fix. No functional change.
Fixes: dccfe3147b42 ("x86/vector: Simplify vector move cleanup")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <liu.song.a23@gmail.com>
Cc: Dmitry Safonov <0x7f454c46@gmail.com>
Cc: stable@vger.kernel.org
Cc: Mike Travis <mike.travis@hpe.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Tariq Toukan <tariqt@mellanox.com>
Cc: Dou Liyang <douly.fnst@cn.fujitsu.com>
Link: https://lkml.kernel.org/r/20180604162224.471925894@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit fd3a88625844907151737fc3b4201676effa6d27 ]
Tun, tap, virtio, packet and uml vector all use struct virtio_net_hdr
to communicate packet metadata to userspace.
For skbuffs with vlan, the first two return the packet as it may have
existed on the wire, inserting the VLAN tag in the user buffer. Then
virtio_net_hdr.csum_start needs to be adjusted by VLAN_HLEN bytes.
Commit f09e2249c4f5 ("macvtap: restore vlan header on user read")
added this feature to macvtap. Commit 3ce9b20f1971 ("macvtap: Fix
csum_start when VLAN tags are present") then fixed up csum_start.
Virtio, packet and uml do not insert the vlan header in the user
buffer.
When introducing virtio_net_hdr_from_skb to deduplicate filling in
the virtio_net_hdr, the variant from macvtap which adds VLAN_HLEN was
applied uniformly, breaking csum offset for packets with vlan on
virtio and packet.
Make insertion of VLAN_HLEN optional. Convert the callers to pass it
when needed.
Fixes: e858fae2b0b8f4 ("virtio_net: use common code for virtio_net_hdr and skb GSO conversion")
Fixes: 1276f24eeef2 ("packet: use common code for virtio_net_hdr and skb GSO conversion")
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 6c206b20092a3623184cff9470dba75d21507874 ]
After commit 6b229cf77d68 ("udp: add batching to udp_rmem_release()")
the sk_rmem_alloc field does not measure exactly anymore the
receive queue length, because we batch the rmem release. The issue
is really apparent only after commit 0d4a6608f68c ("udp: do rmem bulk
free even if the rx sk queue is empty"): the user space can easily
check for an empty socket with not-0 queue length reported by the 'ss'
tool or the procfs interface.
We need to use a custom UDP helper to report the correct queue length,
taking into account the forward allocation deficit.
Reported-by: trevor.francis@46labs.com
Fixes: 6b229cf77d68 ("UDP: add batching to udp_rmem_release()")
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 766d3571d8e50d3a73b77043dc632226f9e6b389 upstream.
KVM_X86_DISABLE_EXITS_HTL really refers to exit on halt.
Obviously a typo: should be named KVM_X86_DISABLE_EXITS_HLT.
Fixes: caa057a2cad ("KVM: X86: Provide a capability to disable HLT intercepts")
Cc: stable@vger.kernel.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit e783bb00ad86d9d1f01d9d3a750713070036358e ]
commit 0bbbf0e7d0e7 ("ipmr, ip6mr: Unite creation of new mr_table")
refactored ipmr_new_table, so that it now returns NULL when
mr_table_alloc fails. Unfortunately, all callers of ipmr_new_table
expect an ERR_PTR.
This can result in NULL deref, for example when ipmr_rules_exit calls
ipmr_free_table with NULL net->ipv4.mrt in the
!CONFIG_IP_MROUTE_MULTIPLE_TABLES version.
This patch makes mr_table_alloc return errors, and changes
ip6mr_new_table and its callers to return/expect error pointers as
well. It also removes the version of mr_table_alloc defined under
!CONFIG_IP_MROUTE_COMMON, since it is never used.
Fixes: 0bbbf0e7d0e7 ("ipmr, ip6mr: Unite creation of new mr_table")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit fa1be7e01ea863e911349e30456706749518eeab ]
Some of the code paths calculating flow hash for IPv6 use flowlabel member
of struct flowi6 which, despite its name, encodes both flow label and
traffic class. If traffic class changes within a TCP connection (as e.g.
ssh does), ECMP route can switch between path. It's also inconsistent with
other code paths where ip6_flowlabel() (returning only flow label) is used
to feed the key.
Use only flow label everywhere, including one place where hash key is set
using ip6_flowinfo().
Fixes: 51ebd3181572 ("ipv6: add support of equal cost multipath (ECMP)")
Fixes: f70ea018da06 ("net: Add functions to get skb->hash based on flow structures")
Signed-off-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Pull networking fixes from David Miller:
1) Infinite loop in _decode_session6(), from Eric Dumazet.
2) Pass correct argument to nla_strlcpy() in netfilter, also from Eric
Dumazet.
3) Out of bounds memory access in ipv6 srh code, from Mathieu Xhonneux.
4) NULL deref in XDP_REDIRECT handling of tun driver, from Toshiaki
Makita.
5) Incorrect idr release in cls_flower, from Paul Blakey.
6) Probe error handling fix in davinci_emac, from Dan Carpenter.
7) Memory leak in XPS configuration, from Alexander Duyck.
8) Use after free with cloned sockets in kcm, from Kirill Tkhai.
9) MTU handling fixes fo ip_tunnel and ip6_tunnel, from Nicolas
Dichtel.
10) Fix UAPI hole in bpf data structure for 32-bit compat applications,
from Daniel Borkmann.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (33 commits)
bpf: fix uapi hole for 32 bit compat applications
net: usb: cdc_mbim: add flag FLAG_SEND_ZLP
ip6_tunnel: remove magic mtu value 0xFFF8
ip_tunnel: restore binding to ifaces with a large mtu
net: dsa: b53: Add BCM5389 support
kcm: Fix use-after-free caused by clonned sockets
net-sysfs: Fix memory leak in XPS configuration
ixgbe: fix parsing of TC actions for HW offload
net: ethernet: davinci_emac: fix error handling in probe()
net/ncsi: Fix array size in dumpit handler
cls_flower: Fix incorrect idr release when failing to modify rule
net/sonic: Use dma_mapping_error()
xfrm Fix potential error pointer dereference in xfrm_bundle_create.
vhost_net: flush batched heads before trying to busy polling
tun: Fix NULL pointer dereference in XDP redirect
be2net: Fix error detection logic for BE3
net: qmi_wwan: Add Netgear Aircard 779S
mlxsw: spectrum: Forbid creation of VLAN 1 over port/LAG
atm: zatm: fix memcmp casting
iwlwifi: pcie: compare with number of IRQs requested for, not number of CPUs
...
|
|
git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"A few final fixes:
i915:
- fix for potential Spectre vector in the new query uAPI
- fix NULL pointer deref (FDO #106559)
- DMI fix to hide LVDS for Radiant P845 (FDO #105468)
amdgpu:
- suspend/resume DC regression fix
- underscan flicker fix on fiji
- gamma setting fix after dpms
omap:
- fix oops regression
core:
- fix PSR timing
dw-hdmi:
- fix oops regression"
* tag 'drm-fixes-for-v4.17-rc8' of git://people.freedesktop.org/~airlied/linux:
drm/amd/display: Update color props when modeset is required
drm/amd/display: Make atomic-check validate underscan changes
drm/bridge/synopsys: dw-hdmi: fix dw_hdmi_setup_rx_sense
drm/amd/display: Fix BUG_ON during CRTC atomic check update
drm/i915/query: nospec expects no more than an unsigned long
drm/i915/query: Protect tainted function pointer lookup
drm/i915/lvds: Move acpi lid notification registration to registration phase
drm/i915: Disable LVDS on Radiant P845
drm/omap: fix NULL deref crash with SDI displays
drm/psr: Fix missed entry in PSR setup time table.
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull IIO driver fixes from Greg KH:
"Here are some old IIO driver fixes that were sitting in my tree for a
few weeks. Sorry about not getting them to you sooner. They fix a
number of small IIO driver issues that have been reported.
All of these have been in linux-next for a while with no reported
problems"
* tag 'staging-4.17-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
iio: adc: select buffer for at91-sama5d2_adc
iio: hid-sensor-trigger: Fix sometimes not powering up the sensor after resume
iio: adc: at91-sama5d2_adc: fix channel configuration for differential channels
iio:kfifo_buf: check for uint overflow
iio:buffer: make length types match kfifo types
iio: adc: stm32-dfsdm: fix sample rate for div2 spi clock
iio: adc: stm32-dfsdm: fix successive oversampling settings
iio: ad7793: implement IIO_CHAN_INFO_SAMP_FREQ
|
|
In 64 bit, we have a 4 byte hole between ifindex and netns_dev in the
case of struct bpf_map_info but also struct bpf_prog_info. In net-next
commit b85fab0e67b ("bpf: Add gpl_compatible flag to struct bpf_prog_info")
added a bitfield into it to expose some flags related to programs. Thus,
add an unnamed __u32 bitfield for both so that alignment keeps the same
in both 32 and 64 bit cases, and can be naturally extended from there
as in b85fab0e67b.
Before:
# file test.o
test.o: ELF 32-bit LSB relocatable, Intel 80386, version 1 (SYSV), not stripped
# pahole test.o
struct bpf_map_info {
__u32 type; /* 0 4 */
__u32 id; /* 4 4 */
__u32 key_size; /* 8 4 */
__u32 value_size; /* 12 4 */
__u32 max_entries; /* 16 4 */
__u32 map_flags; /* 20 4 */
char name[16]; /* 24 16 */
__u32 ifindex; /* 40 4 */
__u64 netns_dev; /* 44 8 */
__u64 netns_ino; /* 52 8 */
/* size: 64, cachelines: 1, members: 10 */
/* padding: 4 */
};
After (same as on 64 bit):
# file test.o
test.o: ELF 32-bit LSB relocatable, Intel 80386, version 1 (SYSV), not stripped
# pahole test.o
struct bpf_map_info {
__u32 type; /* 0 4 */
__u32 id; /* 4 4 */
__u32 key_size; /* 8 4 */
__u32 value_size; /* 12 4 */
__u32 max_entries; /* 16 4 */
__u32 map_flags; /* 20 4 */
char name[16]; /* 24 16 */
__u32 ifindex; /* 40 4 */
/* XXX 4 bytes hole, try to pack */
__u64 netns_dev; /* 48 8 */
__u64 netns_ino; /* 56 8 */
/* --- cacheline 1 boundary (64 bytes) --- */
/* size: 64, cachelines: 1, members: 10 */
/* sum members: 60, holes: 1, sum holes: 4 */
};
Reported-by: Dmitry V. Levin <ldv@altlinux.org>
Reported-by: Eugene Syromiatnikov <esyr@redhat.com>
Fixes: 52775b33bb507 ("bpf: offload: report device information about offloaded maps")
Fixes: 675fc275a3a2d ("bpf: offload: report device information for offloaded programs")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
|
|
git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
dw-hdmi: Fix Oops regression from rc1 (Neil)
Cc: Neil Armstrong <narmstrong@baylibre.com>
* tag 'drm-misc-fixes-2018-05-30' of git://anongit.freedesktop.org/drm/drm-misc:
drm/bridge/synopsys: dw-hdmi: fix dw_hdmi_setup_rx_sense
|
|
The dw_hdmi_setup_rx_sense exported function should not use struct device
to recover the dw-hdmi context using drvdata, but take struct dw_hdmi
directly like other exported functions.
This caused a regression using Meson DRM on S905X since v4.17-rc1 :
Internal error: Oops: 96000007 [#1] PREEMPT SMP
[...]
CPU: 0 PID: 124 Comm: irq/32-dw_hdmi_ Not tainted 4.17.0-rc7 #2
Hardware name: Libre Technology CC (DT)
[...]
pc : osq_lock+0x54/0x188
lr : __mutex_lock.isra.0+0x74/0x530
[...]
Process irq/32-dw_hdmi_ (pid: 124, stack limit = 0x00000000adf418cb)
Call trace:
osq_lock+0x54/0x188
__mutex_lock_slowpath+0x10/0x18
mutex_lock+0x30/0x38
__dw_hdmi_setup_rx_sense+0x28/0x98
dw_hdmi_setup_rx_sense+0x10/0x18
dw_hdmi_top_thread_irq+0x2c/0x50
irq_thread_fn+0x28/0x68
irq_thread+0x10c/0x1a0
kthread+0x128/0x130
ret_from_fork+0x10/0x18
Code: 34000964 d00050a2 51000484 9135c042 (f864d844)
---[ end trace 945641e1fbbc07da ]---
note: irq/32-dw_hdmi_[124] exited with preempt_count 1
genirq: exiting task "irq/32-dw_hdmi_" (124) is an active IRQ thread (irq 32)
Fixes: eea034af90c6 ("drm/bridge/synopsys: dw-hdmi: don't clobber drvdata")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Tested-by: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1527673438-20643-1-git-send-email-narmstrong@baylibre.com
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Thomas Gleixner:
"Three fixes for scheduler and kthread code:
- allow calling kthread_park() on an already parked thread
- restore the sched_pi_setprio() tracepoint behaviour
- clarify the unclear string for the scheduling domain debug output"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched, tracing: Fix trace_sched_pi_setprio() for deboosting
kthread: Allow kthread_park() on a parked kthread
sched/topology: Clarify root domain(s) debug string
|
|
Merge misc fixes from Andrew Morton:
"16 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
kasan: fix memory hotplug during boot
kasan: free allocated shadow memory on MEM_CANCEL_ONLINE
checkpatch: fix macro argument precedence test
init/main.c: include <linux/mem_encrypt.h>
kernel/sys.c: fix potential Spectre v1 issue
mm/memory_hotplug: fix leftover use of struct page during hotplug
proc: fix smaps and meminfo alignment
mm: do not warn on offline nodes unless the specific node is explicitly requested
mm, memory_hotplug: make has_unmovable_pages more robust
mm/kasan: don't vfree() nonexistent vm_area
MAINTAINERS: change hugetlbfs maintainer and update files
ipc/shm: fix shmat() nil address after round-down when remapping
Revert "ipc/shm: Fix shmat mmap nil-page protection"
idr: fix invalid ptr dereference on item delete
ocfs2: revert "ocfs2/o2hb: check len for bio_add_page() to avoid getting incorrect bio"
mm: fix nr_rotate_swap leak in swapon() error case
|
|
Pull networking fixes from David Miller:
"Let's begin the holiday weekend with some networking fixes:
1) Whoops need to restrict cfg80211 wiphy names even more to 64
bytes. From Eric Biggers.
2) Fix flags being ignored when using kernel_connect() with SCTP,
from Xin Long.
3) Use after free in DCCP, from Alexey Kodanev.
4) Need to check rhltable_init() return value in ipmr code, from Eric
Dumazet.
5) XDP handling fixes in virtio_net from Jason Wang.
6) Missing RTA_TABLE in rtm_ipv4_policy[], from Roopa Prabhu.
7) Need to use IRQ disabling spinlocks in mlx4_qp_lookup(), from Jack
Morgenstein.
8) Prevent out-of-bounds speculation using indexes in BPF, from
Daniel Borkmann.
9) Fix regression added by AF_PACKET link layer cure, from Willem de
Bruijn.
10) Correct ENIC dma mask, from Govindarajulu Varadarajan.
11) Missing config options for PMTU tests, from Stefano Brivio"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (48 commits)
ibmvnic: Fix partial success login retries
selftests/net: Add missing config options for PMTU tests
mlx4_core: allocate ICM memory in page size chunks
enic: set DMA mask to 47 bit
ppp: remove the PPPIOCDETACH ioctl
ipv4: remove warning in ip_recv_error
net : sched: cls_api: deal with egdev path only if needed
vhost: synchronize IOTLB message with dev cleanup
packet: fix reserve calculation
net/mlx5: IPSec, Fix a race between concurrent sandbox QP commands
net/mlx5e: When RXFCS is set, add FCS data into checksum calculation
bpf: properly enforce index mask to prevent out-of-bounds speculation
net/mlx4: Fix irq-unsafe spinlock usage
net: phy: broadcom: Fix bcm_write_exp()
net: phy: broadcom: Fix auxiliary control register reads
net: ipv4: add missing RTA_TABLE to rtm_ipv4_policy
net/mlx4: fix spelling mistake: "Inrerface" -> "Interface" and rephrase message
ibmvnic: Only do H_EOI for mobility events
tuntap: correctly set SOCKWQ_ASYNC_NOSPACE
virtio-net: fix leaking page for gso packet during mergeable XDP
...
|
|
The case of a new numa node got missed in avoiding using the node info
from page_struct during hotplug. In this path we have a call to
register_mem_sect_under_node (which allows us to specify it is hotplug
so don't change the node), via link_mem_sections which unfortunately
does not.
Fix is to pass check_nid through link_mem_sections as well and disable
it in the new numa node path.
Note the bug only 'sometimes' manifests depending on what happens to be
in the struct page structures - there are lots of them and it only needs
to match one of them.
The result of the bug is that (with a new memory only node) we never
successfully call register_mem_sect_under_node so don't get the memory
associated with the node in sysfs and meminfo for the node doesn't
report it.
It came up whilst testing some arm64 hotplug patches, but appears to be
universal. Whilst I'm triggering it by removing then reinserting memory
to a node with no other elements (thus making the node disappear then
appear again), it appears it would happen on hotplugging memory where
there was none before and it doesn't seem to be related the arm64
patches.
These patches call __add_pages (where most of the issue was fixed by
Pavel's patch). If there is a node at the time of the __add_pages call
then all is well as it calls register_mem_sect_under_node from there
with check_nid set to false. Without a node that function returns
having not done the sysfs related stuff as there is no node to use.
This is expected but it is the resulting path that fails...
Exact path to the problem is as follows:
mm/memory_hotplug.c: add_memory_resource()
The node is not online so we enter the 'if (new_node)' twice, on the
second such block there is a call to link_mem_sections which calls
into
drivers/node.c: link_mem_sections() which calls
drivers/node.c: register_mem_sect_under_node() which calls
get_nid_for_pfn and keeps trying until the output of that matches
the expected node (passed all the way down from
add_memory_resource)
It is effectively the same fix as the one referred to in the fixes tag
just in the code path for a new node where the comments point out we
have to rerun the link creation because it will have failed in
register_new_memory (as there was no node at the time). (actually that
comment is wrong now as we don't have register_new_memory any more it
got renamed to hotplug_memory_register in Pavel's patch).
Link: http://lkml.kernel.org/r/20180504085311.1240-1-Jonathan.Cameron@huawei.com
Fixes: fc44f7f9231a ("mm/memory_hotplug: don't read nid from struct page during hotplug")
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Pavel Tatashin <pasha.tatashin@oracle.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
requested
Oscar has noticed that we splat
WARNING: CPU: 0 PID: 64 at ./include/linux/gfp.h:467 vmemmap_alloc_block+0x4e/0xc9
[...]
CPU: 0 PID: 64 Comm: kworker/u4:1 Tainted: G W E 4.17.0-rc5-next-20180517-1-default+ #66
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.0.0-prebuilt.qemu-project.org 04/01/2014
Workqueue: kacpi_hotplug acpi_hotplug_work_fn
Call Trace:
vmemmap_populate+0xf2/0x2ae
sparse_mem_map_populate+0x28/0x35
sparse_add_one_section+0x4c/0x187
__add_pages+0xe7/0x1a0
add_pages+0x16/0x70
add_memory_resource+0xa3/0x1d0
add_memory+0xe4/0x110
acpi_memory_device_add+0x134/0x2e0
acpi_bus_attach+0xd9/0x190
acpi_bus_scan+0x37/0x70
acpi_device_hotplug+0x389/0x4e0
acpi_hotplug_work_fn+0x1a/0x30
process_one_work+0x146/0x340
worker_thread+0x47/0x3e0
kthread+0xf5/0x130
ret_from_fork+0x35/0x40
when adding memory to a node that is currently offline.
The VM_WARN_ON is just too loud without a good reason. In this
particular case we are doing
alloc_pages_node(node, GFP_KERNEL|__GFP_RETRY_MAYFAIL|__GFP_NOWARN, order)
so we do not insist on allocating from the given node (it is more a
hint) so we can fall back to any other populated node and moreover we
explicitly ask to not warn for the allocation failure.
Soften the warning only to cases when somebody asks for the given node
explicitly by __GFP_THISNODE.
Link: http://lkml.kernel.org/r/20180523125555.30039-3-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reported-by: Oscar Salvador <osalvador@techadventures.net>
Tested-by: Oscar Salvador <osalvador@techadventures.net>
Reviewed-by: Pavel Tatashin <pasha.tatashin@oracle.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Reza Arbab <arbab@linux.vnet.ibm.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
Daniel Borkmann says:
====================
pull-request: bpf 2018-05-24
The following pull-request contains BPF updates for your *net* tree.
The main changes are:
1) Fix a bug in the original fix to prevent out of bounds speculation when
multiple tail call maps from different branches or calls end up at the
same tail call helper invocation, from Daniel.
2) Two selftest fixes, one in reuseport_bpf_numa where test is skipped in
case of missing numa support and another one to update kernel config to
properly support xdp_meta.sh test, from Anders.
...
Would be great if you have a chance to merge net into net-next after that.
The verifier fix would be needed later as a dependency in bpf-next for
upcomig work there. When you do the merge there's a trivial conflict on
BPF side with 849fa50662fb ("bpf/verifier: refine retval R0 state for
bpf_get_stack helper"): Resolution is to keep both functions, the
do_refine_retval_range() and record_func_map().
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Since the following commit:
b91473ff6e97 ("sched,tracing: Update trace_sched_pi_setprio()")
the sched_pi_setprio trace point shows the "newprio" during a deboost:
|futex sched_pi_setprio: comm=futex_requeue_p pid"34 oldprio newprio=3D98
|futex sched_switch: prev_comm=futex_requeue_p prev_pid"34 prev_prio=120
This patch open codes __rt_effective_prio() in the tracepoint as the
'newprio' to get the old behaviour back / the correct priority:
|futex sched_pi_setprio: comm=futex_requeue_p pid"20 oldprio newprio=3D120
|futex sched_switch: prev_comm=futex_requeue_p prev_pid"20 prev_prio=120
Peter suggested to open code the new priority so people using tracehook
could get the deadline data out.
Reported-by: Mansky Christian <man@keba.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: b91473ff6e97 ("sched,tracing: Update trace_sched_pi_setprio()")
Link: http://lkml.kernel.org/r/20180524132647.gg6ziuogczdmjjzu@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
|
|
The PPPIOCDETACH ioctl effectively tries to "close" the given ppp file
before f_count has reached 0, which is fundamentally a bad idea. It
does check 'f_count < 2', which excludes concurrent operations on the
file since they would only be possible with a shared fd table, in which
case each fdget() would take a file reference. However, it fails to
account for the fact that even with 'f_count == 1' the file can still be
linked into epoll instances. As reported by syzbot, this can trivially
be used to cause a use-after-free.
Yet, the only known user of PPPIOCDETACH is pppd versions older than
ppp-2.4.2, which was released almost 15 years ago (November 2003).
Also, PPPIOCDETACH apparently stopped working reliably at around the
same time, when the f_count check was added to the kernel, e.g. see
https://lkml.org/lkml/2002/12/31/83. Also, the current 'f_count < 2'
check makes PPPIOCDETACH only work in single-threaded applications; it
always fails if called from a multithreaded application.
All pppd versions released in the last 15 years just close() the file
descriptor instead.
Therefore, instead of hacking around this bug by exporting epoll
internals to modules, and probably missing other related bugs, just
remove the PPPIOCDETACH ioctl and see if anyone actually notices. Leave
a stub in place that prints a one-time warning and returns EINVAL.
Reported-by: syzbot+16363c99d4134717c05b@syzkaller.appspotmail.com
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Acked-by: Paul Mackerras <paulus@ozlabs.org>
Reviewed-by: Guillaume Nault <g.nault@alphalink.fr>
Tested-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Pull rdma fixes from Jason Gunthorpe:
"This is pretty much just the usual array of smallish driver bugs.
- remove bouncing addresses from the MAINTAINERS file
- kernel oops and bad error handling fixes for hfi, i40iw, cxgb4, and
hns drivers
- various small LOC behavioral/operational bugs in mlx5, hns, qedr
and i40iw drivers
- two fixes for patches already sent during the merge window
- a long-standing bug related to not decreasing the pinned pages
count in the right MM was found and fixed"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (28 commits)
RDMA/hns: Move the location for initializing tmp_len
RDMA/hns: Bugfix for cq record db for kernel
IB/uverbs: Fix uverbs_attr_get_obj
RDMA/qedr: Fix doorbell bar mapping for dpi > 1
IB/umem: Use the correct mm during ib_umem_release
iw_cxgb4: Fix an error handling path in 'c4iw_get_dma_mr()'
RDMA/i40iw: Avoid panic when reading back the IRQ affinity hint
RDMA/i40iw: Avoid reference leaks when processing the AEQ
RDMA/i40iw: Avoid panic when objects are being created and destroyed
RDMA/hns: Fix the bug with NULL pointer
RDMA/hns: Set NULL for __internal_mr
RDMA/hns: Enable inner_pa_vld filed of mpt
RDMA/hns: Set desc_dma_addr for zero when free cmq desc
RDMA/hns: Fix the bug with rq sge
RDMA/hns: Not support qp transition from reset to reset for hip06
RDMA/hns: Add return operation when configured global param fail
RDMA/hns: Update convert function of endian format
RDMA/hns: Load the RoCE dirver automatically
RDMA/hns: Bugfix for rq record db for kernel
RDMA/hns: Add rq inline flags judgement
...
|
|
This reverts the following commits that change CMA design in MM.
3d2054ad8c2d ("ARM: CMA: avoid double mapping to the CMA area if CONFIG_HIGHMEM=y")
1d47a3ec09b5 ("mm/cma: remove ALLOC_CMA")
bad8c6c0b114 ("mm/cma: manage the memory of the CMA area by using the ZONE_MOVABLE")
Ville reported a following error on i386.
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
microcode: microcode updated early to revision 0x4, date = 2013-06-28
Initializing CPU#0
Initializing HighMem for node 0 (000377fe:00118000)
Initializing Movable for node 0 (00000001:00118000)
BUG: Bad page state in process swapper pfn:377fe
page:f53effc0 count:0 mapcount:-127 mapping:00000000 index:0x0
flags: 0x80000000()
raw: 80000000 00000000 00000000 ffffff80 00000000 00000100 00000200 00000001
page dumped because: nonzero mapcount
Modules linked in:
CPU: 0 PID: 0 Comm: swapper Not tainted 4.17.0-rc5-elk+ #145
Hardware name: Dell Inc. Latitude E5410/03VXMC, BIOS A15 07/11/2013
Call Trace:
dump_stack+0x60/0x96
bad_page+0x9a/0x100
free_pages_check_bad+0x3f/0x60
free_pcppages_bulk+0x29d/0x5b0
free_unref_page_commit+0x84/0xb0
free_unref_page+0x3e/0x70
__free_pages+0x1d/0x20
free_highmem_page+0x19/0x40
add_highpages_with_active_regions+0xab/0xeb
set_highmem_pages_init+0x66/0x73
mem_init+0x1b/0x1d7
start_kernel+0x17a/0x363
i386_start_kernel+0x95/0x99
startup_32_smp+0x164/0x168
The reason for this error is that the span of MOVABLE_ZONE is extended
to whole node span for future CMA initialization, and, normal memory is
wrongly freed here. I submitted the fix and it seems to work, but,
another problem happened.
It's so late time to fix the later problem so I decide to reverting the
series.
Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Laura Abbott <labbott@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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While reviewing the verifier code, I recently noticed that the
following two program variants in relation to tail calls can be
loaded.
Variant 1:
# bpftool p d x i 15
0: (15) if r1 == 0x0 goto pc+3
1: (18) r2 = map[id:5]
3: (05) goto pc+2
4: (18) r2 = map[id:6]
6: (b7) r3 = 7
7: (35) if r3 >= 0xa0 goto pc+2
8: (54) (u32) r3 &= (u32) 255
9: (85) call bpf_tail_call#12
10: (b7) r0 = 1
11: (95) exit
# bpftool m s i 5
5: prog_array flags 0x0
key 4B value 4B max_entries 4 memlock 4096B
# bpftool m s i 6
6: prog_array flags 0x0
key 4B value 4B max_entries 160 memlock 4096B
Variant 2:
# bpftool p d x i 20
0: (15) if r1 == 0x0 goto pc+3
1: (18) r2 = map[id:8]
3: (05) goto pc+2
4: (18) r2 = map[id:7]
6: (b7) r3 = 7
7: (35) if r3 >= 0x4 goto pc+2
8: (54) (u32) r3 &= (u32) 3
9: (85) call bpf_tail_call#12
10: (b7) r0 = 1
11: (95) exit
# bpftool m s i 8
8: prog_array flags 0x0
key 4B value 4B max_entries 160 memlock 4096B
# bpftool m s i 7
7: prog_array flags 0x0
key 4B value 4B max_entries 4 memlock 4096B
In both cases the index masking inserted by the verifier in order
to control out of bounds speculation from a CPU via b2157399cc98
("bpf: prevent out-of-bounds speculation") seems to be incorrect
in what it is enforcing. In the 1st variant, the mask is applied
from the map with the significantly larger number of entries where
we would allow to a certain degree out of bounds speculation for
the smaller map, and in the 2nd variant where the mask is applied
from the map with the smaller number of entries, we get buggy
behavior since we truncate the index of the larger map.
The original intent from commit b2157399cc98 is to reject such
occasions where two or more different tail call maps are used
in the same tail call helper invocation. However, the check on
the BPF_MAP_PTR_POISON is never hit since we never poisoned the
saved pointer in the first place! We do this explicitly for map
lookups but in case of tail calls we basically used the tail
call map in insn_aux_data that was processed in the most recent
path which the verifier walked. Thus any prior path that stored
a pointer in insn_aux_data at the helper location was always
overridden.
Fix it by moving the map pointer poison logic into a small helper
that covers both BPF helpers with the same logic. After that in
fixup_bpf_calls() the poison check is then hit for tail calls
and the program rejected. Latter only happens in unprivileged
case since this is the *only* occasion where a rewrite needs to
happen, and where such rewrite is specific to the map (max_entries,
index_mask). In the privileged case the rewrite is generic for
the insn->imm / insn->code update so multiple maps from different
paths can be handled just fine since all the remaining logic
happens in the instruction processing itself. This is similar
to the case of map lookups: in case there is a collision of
maps in fixup_bpf_calls() we must skip the inlined rewrite since
this will turn the generic instruction sequence into a non-
generic one. Thus the patch_call_imm will simply update the
insn->imm location where the bpf_map_lookup_elem() will later
take care of the dispatch. Given we need this 'poison' state
as a check, the information of whether a map is an unpriv_array
gets lost, so enforcing it prior to that needs an additional
state. In general this check is needed since there are some
complex and tail call intensive BPF programs out there where
LLVM tends to generate such code occasionally. We therefore
convert the map_ptr rather into map_state to store all this
w/o extra memory overhead, and the bit whether one of the maps
involved in the collision was from an unpriv_array thus needs
to be retained as well there.
Fixes: b2157399cc98 ("bpf: prevent out-of-bounds speculation")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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The err pointer comes from uverbs_attr_get, not from the uobject member,
which does not store an ERR_PTR.
Fixes: be934cca9e98 ("IB/uverbs: Add device memory registration ioctl support")
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
A handful of fixes:
* hwsim radio dump wasn't working for the first radio
* mesh was updating statistics incorrectly
* a netlink message allocation was possibly too short
* wiphy name limit was still too long
* in certain cases regdb query could find a NULL pointer
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Now sctp uses inet_dgram_connect as its proto_ops .connect, and the flags
param can't be passed into its proto .connect where this flags is really
needed.
sctp works around it by getting flags from socket file in __sctp_connect.
It works for connecting from userspace, as inherently the user sock has
socket file and it passes f_flags as the flags param into the proto_ops
.connect.
However, the sock created by sock_create_kern doesn't have a socket file,
and it passes the flags (like O_NONBLOCK) by using the flags param in
kernel_connect, which calls proto_ops .connect later.
So to fix it, this patch defines a new proto_ops .connect for sctp,
sctp_inet_connect, which calls __sctp_connect() directly with this
flags param. After this, the sctp's proto .connect can be removed.
Note that sctp_inet_connect doesn't need to do some checks that are not
needed for sctp, which makes thing better than with inet_dgram_connect.
Suggested-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull vfs fixes from Al Viro:
"Assorted fixes all over the place"
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
aio: fix io_destroy(2) vs. lookup_ioctx() race
ext2: fix a block leak
nfsd: vfs_mkdir() might succeed leaving dentry negative unhashed
cachefiles: vfs_mkdir() might succeed leaving dentry negative unhashed
unfuck sysfs_mount()
kernfs: deal with kernfs_fill_super() failures
cramfs: Fix IS_ENABLED typo
befs_lookup(): use d_splice_alias()
affs_lookup: switch to d_splice_alias()
affs_lookup(): close a race with affs_remove_link()
fix breakage caused by d_find_alias() semantics change
fs: don't scan the inode cache before SB_BORN is set
do d_instantiate/unlock_new_inode combinations safely
iov_iter: fix memory leak in pipe_get_pages_alloc()
iov_iter: fix return type of __pipe_get_pages()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Merge speculative store buffer bypass fixes from Thomas Gleixner:
- rework of the SPEC_CTRL MSR management to accomodate the new fancy
SSBD (Speculative Store Bypass Disable) bit handling.
- the CPU bug and sysfs infrastructure for the exciting new Speculative
Store Bypass 'feature'.
- support for disabling SSB via LS_CFG MSR on AMD CPUs including
Hyperthread synchronization on ZEN.
- PRCTL support for dynamic runtime control of SSB
- SECCOMP integration to automatically disable SSB for sandboxed
processes with a filter flag for opt-out.
- KVM integration to allow guests fiddling with SSBD including the new
software MSR VIRT_SPEC_CTRL to handle the LS_CFG based oddities on
AMD.
- BPF protection against SSB
.. this is just the core and x86 side, other architecture support will
come separately.
* 'speck-v20' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (49 commits)
bpf: Prevent memory disambiguation attack
x86/bugs: Rename SSBD_NO to SSB_NO
KVM: SVM: Implement VIRT_SPEC_CTRL support for SSBD
x86/speculation, KVM: Implement support for VIRT_SPEC_CTRL/LS_CFG
x86/bugs: Rework spec_ctrl base and mask logic
x86/bugs: Remove x86_spec_ctrl_set()
x86/bugs: Expose x86_spec_ctrl_base directly
x86/bugs: Unify x86_spec_ctrl_{set_guest,restore_host}
x86/speculation: Rework speculative_store_bypass_update()
x86/speculation: Add virtualized speculative store bypass disable support
x86/bugs, KVM: Extend speculation control for VIRT_SPEC_CTRL
x86/speculation: Handle HT correctly on AMD
x86/cpufeatures: Add FEATURE_ZEN
x86/cpufeatures: Disentangle SSBD enumeration
x86/cpufeatures: Disentangle MSR_SPEC_CTRL enumeration from IBRS
x86/speculation: Use synthetic bits for IBRS/IBPB/STIBP
KVM: SVM: Move spec control call after restore of GS
x86/cpu: Make alternative_msr_write work for 32-bit code
x86/bugs: Fix the parameters alignment and missing void
x86/bugs: Make cpu_show_common() static
...
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Pull networking fixes from David Miller:
1) Fix refcounting bug for connections in on-packet scheduling mode of
IPVS, from Julian Anastasov.
2) Set network header properly in AF_PACKET's packet_snd, from Willem
de Bruijn.
3) Fix regressions in 3c59x by converting to generic DMA API. It was
relying upon the hack that the PCI DMA interfaces would accept NULL
for EISA devices. From Christoph Hellwig.
4) Remove RDMA devices before unregistering netdev in QEDE driver, from
Michal Kalderon.
5) Use after free in TUN driver ptr_ring usage, from Jason Wang.
6) Properly check for missing netlink attributes in SMC_PNETID
requests, from Eric Biggers.
7) Set DMA mask before performaing any DMA operations in vmxnet3
driver, from Regis Duchesne.
8) Fix mlx5 build with SMP=n, from Saeed Mahameed.
9) Classifier fixes in bcm_sf2 driver from Florian Fainelli.
10) Tuntap use after free during release, from Jason Wang.
11) Don't use stack memory in scatterlists in tls code, from Matt
Mullins.
12) Not fully initialized flow key object in ipv4 routing code, from
David Ahern.
13) Various packet headroom bug fixes in ip6_gre driver, from Petr
Machata.
14) Remove queues from XPS maps using correct index, from Amritha
Nambiar.
15) Fix use after free in sock_diag, from Eric Dumazet.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (64 commits)
net: ip6_gre: fix tunnel metadata device sharing.
cxgb4: fix offset in collecting TX rate limit info
net: sched: red: avoid hashing NULL child
sock_diag: fix use-after-free read in __sk_free
sh_eth: Change platform check to CONFIG_ARCH_RENESAS
net: dsa: Do not register devlink for unused ports
net: Fix a bug in removing queues from XPS map
bpf: fix truncated jump targets on heavy expansions
bpf: parse and verdict prog attach may race with bpf map update
bpf: sockmap update rollback on error can incorrectly dec prog refcnt
net: test tailroom before appending to linear skb
net: ip6_gre: Fix ip6erspan hlen calculation
net: ip6_gre: Split up ip6gre_changelink()
net: ip6_gre: Split up ip6gre_newlink()
net: ip6_gre: Split up ip6gre_tnl_change()
net: ip6_gre: Split up ip6gre_tnl_link_config()
net: ip6_gre: Fix headroom request in ip6erspan_tunnel_xmit()
net: ip6_gre: Request headroom in __gre6_xmit()
selftests/bpf: check return value of fopen in test_verifier.c
erspan: fix invalid erspan version.
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Thomas Gleixner:
"Two fixes to address shortcomings of the rwsem/percpu-rwsem lock
debugging code which emits false positive warnings when the rwsem is
anonymously locked and unlocked"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/percpu-rwsem: Annotate rwsem ownership transfer by setting RWSEM_OWNER_UNKNOWN
locking/rwsem: Add a new RWSEM_ANONYMOUSLY_OWNED flag
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull EFI fixes from Thomas Gleixner:
- Use explicitely sized type for the romimage pointer in the 32bit EFI
protocol struct so a 64bit kernel does not expand it to 64bit. Ditto
for the 64bit struct to avoid the reverse issue on 32bit kernels.
- Handle randomized tex offset correctly in the ARM64 EFI stub to avoid
unaligned data resulting in stack corruption and other hard to
diagnose wreckage.
* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi/libstub/arm64: Handle randomized TEXT_OFFSET
efi: Avoid potential crashes, fix the 'struct efi_pci_io_protocol_32' definition for mixed mode
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Detect code patterns where malicious 'speculative store bypass' can be used
and sanitize such patterns.
39: (bf) r3 = r10
40: (07) r3 += -216
41: (79) r8 = *(u64 *)(r7 +0) // slow read
42: (7a) *(u64 *)(r10 -72) = 0 // verifier inserts this instruction
43: (7b) *(u64 *)(r8 +0) = r3 // this store becomes slow due to r8
44: (79) r1 = *(u64 *)(r6 +0) // cpu speculatively executes this load
45: (71) r2 = *(u8 *)(r1 +0) // speculatively arbitrary 'load byte'
// is now sanitized
Above code after x86 JIT becomes:
e5: mov %rbp,%rdx
e8: add $0xffffffffffffff28,%rdx
ef: mov 0x0(%r13),%r14
f3: movq $0x0,-0x48(%rbp)
fb: mov %rdx,0x0(%r14)
ff: mov 0x0(%rbx),%rdi
103: movzbq 0x0(%rdi),%rsi
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Many places in drivers/ file systems, error was handled in a common way
like below:
ret = (ret == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS;
vmf_error() will replace this and return vm_fault_t type err.
A lot of drivers and filesystems currently have a rather complex mapping
of errno-to-VM_FAULT code. We have been able to eliminate a lot of it
by just returning VM_FAULT codes directly from functions which are
called exclusively from the fault handling path.
Some functions can be called both from the fault handler and other
context which are expecting an errno, so they have to continue to return
an errno. Some users still need to choose different behaviour for
different errnos, but vmf_error() captures the essential error
translation that's common to all users, and those that need to handle
additional errors can handle them first.
Link: http://lkml.kernel.org/r/20180510174826.GA14268@jordon-HP-15-Notebook-PC
Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull mtd fixes from Boris Brezillon:
"NAND fixes:
- Fix read path of the Marvell NAND driver
- Make sure we don't pass a u64 to ndelay()
CFI fix:
- Fix the map_word_andequal() implementation"
* tag 'mtd/fixes-for-4.17-rc6' of git://git.infradead.org/linux-mtd:
mtd: rawnand: Fix return type of __DIVIDE() when called with 32-bit
mtd: rawnand: marvell: Fix read logic for layouts with ->nchunks > 2
mtd: Fix comparison in map_word_andequal()
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wiphy names were recently limited to 128 bytes by commit a7cfebcb7594
("cfg80211: limit wiphy names to 128 bytes"). As it turns out though,
this isn't sufficient because dev_vprintk_emit() needs the syslog header
string "SUBSYSTEM=ieee80211\0DEVICE=+ieee80211:$devname" to fit into 128
bytes. This triggered the "device/subsystem name too long" WARN when
the device name was >= 90 bytes. As before, this was reproduced by
syzbot by sending an HWSIM_CMD_NEW_RADIO command to the MAC80211_HWSIM
generic netlink family.
Fix it by further limiting wiphy names to 64 bytes.
Reported-by: syzbot+e64565577af34b3768dc@syzkaller.appspotmail.com
Fixes: a7cfebcb7594 ("cfg80211: limit wiphy names to 128 bytes")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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scatterlist code expects virt_to_page() to work, which fails with
CONFIG_VMAP_STACK=y.
Fixes: c46234ebb4d1e ("tls: RX path for ktls")
Signed-off-by: Matt Mullins <mmullins@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull kvm fixes from Paolo Bonzini:
- ARM/ARM64 locking fixes
- x86 fixes: PCID, UMIP, locking
- improved support for recent Windows version that have a 2048 Hz APIC
timer
- rename KVM_HINTS_DEDICATED CPUID bit to KVM_HINTS_REALTIME
- better behaved selftests
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvm: rename KVM_HINTS_DEDICATED to KVM_HINTS_REALTIME
KVM: arm/arm64: VGIC/ITS save/restore: protect kvm_read_guest() calls
KVM: arm/arm64: VGIC/ITS: protect kvm_read_guest() calls with SRCU lock
KVM: arm/arm64: VGIC/ITS: Promote irq_lock() in update_affinity
KVM: arm/arm64: Properly protect VGIC locks from IRQs
KVM: X86: Lower the default timer frequency limit to 200us
KVM: vmx: update sec exec controls for UMIP iff emulating UMIP
kvm: x86: Suppress CR3_PCID_INVD bit only when PCIDs are enabled
KVM: selftests: exit with 0 status code when tests cannot be run
KVM: hyperv: idr_find needs RCU protection
x86: Delay skip of emulated hypercall instruction
KVM: Extend MAX_IRQ_ROUTES to 4096 for all archs
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