Pull networking fixes from David Miller:
1) Fix use-after-free with mac80211 RX A-MPDU reorder timer, from
Johannes Berg.
2) iwlwifi leaks memory every module load/unload cycles, fix from Larry
Finger.
3) Need to use for_each_netdev_safe() in rtnl_group_changelink()
otherwise we can crash, from WANG Cong.
4) mlx4 driver does register_netdev() too early in the probe sequence,
from Ido Shamay.
5) Don't allow router discovery hop limit to decrease the interface's
hop limit, from D.S. Ljungmark.
6) tx_packets and tx_bytes improperly accounted for certain classes of
USB network devices, fix from Ben Hutchings.
7) ip{6}mr_rules_init() mistakenly use plain kfree to release the ipmr
tables in the error path, they must instead use ip{6}mr_free_table().
Fix from WANG Cong.
8) cxgb4 doesn't properly quiesce all RX activity before unregistering
the netdevice. Fix from Hariprasad Shenai.
9) Fix hash corruptions in ipvlan driver, from Jiri Benc.
10) nla_memcpy(), like a real memcpy, should fully initialize the
destination buffer, even if the source attribute is smaller. Fix
from Jiri Benc.
11) Fix wrong error code returned from iucv_sock_sendmsg(). We should
use whatever sock_alloc_send_skb() put into 'err'. From Eugene
Crosser.
12) Fix slab object leak on module unload in TIPC, from Ying Xue.
13) Need a READ_ONCE() when reading the cached RX socket route in
tcp_v{4,6}_early_demux(). From Michal Kubecek.
14) Still too many problems with TPC support in the ath9k driver, so
disable it for now. From Felix Fietkau.
15) When in AP mode the rtlwifi driver can leak DMA mappings, fix from
Larry Finger.
16) Missing kzalloc() failure check in gs_usb CAN driver, from Colin Ian
King.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (52 commits)
cxgb4: Fix to dump devlog, even if FW is crashed
cxgb4: Firmware macro changes for fw verison 1.13.32.0
bnx2x: Fix kdump when iommu=on
bnx2x: Fix kdump on 4-port device
mac80211: fix RX A-MPDU session reorder timer deletion
MAINTAINERS: Update Intel Wired Ethernet Driver info
tipc: fix a slab object leak
net/usb/r8152: add device id for Lenovo TP USB 3.0 Ethernet
af_iucv: fix AF_IUCV sendmsg() errno
openvswitch: Return vport module ref before destruction
netlink: pad nla_memcpy dest buffer with zeroes
bonding: Bonding Overriding Configuration logic restored.
ipvlan: fix check for IP addresses in control path
ipvlan: do not use rcu operations for address list
ipvlan: protect against concurrent link removal
ipvlan: fix addr hash list corruption
net: fec: setup right value for mdio hold time
net: tcp6: fix double call of tcp_v6_fill_cb()
cxgb4vf: Fix sparse warnings
netns: don't clear nsid too early on removal
...
frequently updated inods to never have their timestamps updated.
These changes guarantee that no timestamp on disk will be stale by
more than 24 hours.
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Merge tag 'lazytime_fix' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull lazytime fixes from Ted Ts'o:
"This fixes a problem in the lazy time patches, which can cause
frequently updated inods to never have their timestamps updated.
These changes guarantee that no timestamp on disk will be stale by
more than 24 hours"
* tag 'lazytime_fix' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
fs: add dirtytime_expire_seconds sysctl
fs: make sure the timestamps for lazytime inodes eventually get written
Pull nfsd fixes from Bruce Fields:
"Two main issues:
- We found that turning on pNFS by default (when it's configured at
build time) was too aggressive, so we want to switch the default
before the 4.0 release.
- Recent client changes to increase open parallelism uncovered a
serious bug lurking in the server's open code.
Also fix a krb5/selinux regression.
The rest is mainly smaller pNFS fixes"
* 'for-4.0' of git://linux-nfs.org/~bfields/linux:
sunrpc: make debugfs file creation failure non-fatal
nfsd: require an explicit option to enable pNFS
NFSD: Fix bad update of layout in nfsd4_return_file_layout
NFSD: Take care the return value from nfsd4_encode_stateid
NFSD: Printk blocklayout length and offset as format 0x%llx
nfsd: return correct lockowner when there is a race on hash insert
nfsd: return correct openowner when there is a race to put one in the hash
NFSD: Put exports after nfsd4_layout_verify fail
NFSD: Error out when register_shrinker() fail
NFSD: Take care the return value from nfsd4_decode_stateid
NFSD: Check layout type when returning client layouts
NFSD: restore trace event lost in mismerge
We currently have a problem that SELinux policy is being enforced when
creating debugfs files. If a debugfs file is created as a side effect of
doing some syscall, then that creation can fail if the SELinux policy
for that process prevents it.
This seems wrong. We don't do that for files under /proc, for instance,
so Bruce has proposed a patch to fix that.
While discussing that patch however, Greg K.H. stated:
"No kernel code should care / fail if a debugfs function fails, so
please fix up the sunrpc code first."
This patch converts all of the sunrpc debugfs setup code to be void
return functins, and the callers to not look for errors from those
functions.
This should allow rpc_clnt and rpc_xprt creation to work, even if the
kernel fails to create debugfs files for some reason.
Symptoms were failing krb5 mounts on systems using gss-proxy and
selinux.
Fixes: 388f0c7767 "sunrpc: add a debugfs rpc_xprt directory..."
Cc: stable@vger.kernel.org
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Turns out sending out layouts to any client is a bad idea if they
can't get at the storage device, so require explicit admin action
to enable pNFS.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
cdc_ncm disagrees with usbnet about how much framing overhead should
be counted in the tx_bytes statistics, and tries 'fix' this by
decrementing tx_bytes on the transmit path. But statistics must never
be decremented except due to roll-over; this will thoroughly confuse
user-space. Also, tx_bytes is only incremented by usbnet in the
completion path.
Fix this by requiring drivers that set FLAG_MULTI_FRAME to set a
tx_bytes delta along with the tx_packets count.
Fixes: beeecd42c3 ("net: cdc_ncm/cdc_mbim: adding NCM protocol statistics")
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Currently the usbnet core does not update the tx_packets statistic for
drivers with FLAG_MULTI_PACKET and there is no hook in the TX
completion path where they could do this.
cdc_ncm and dependent drivers are bumping tx_packets stat on the
transmit path while asix and sr9800 aren't updating it at all.
Add a packet count in struct skb_data so these drivers can fill it
in, initialise it to 1 for other drivers, and add the packet count
to the tx_packets statistic on completion.
Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Tested-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dave Chinner reported the following on https://lkml.org/lkml/2015/3/1/226
Across the board the 4.0-rc1 numbers are much slower, and the degradation
is far worse when using the large memory footprint configs. Perf points
straight at the cause - this is from 4.0-rc1 on the "-o bhash=101073" config:
- 56.07% 56.07% [kernel] [k] default_send_IPI_mask_sequence_phys
- default_send_IPI_mask_sequence_phys
- 99.99% physflat_send_IPI_mask
- 99.37% native_send_call_func_ipi
smp_call_function_many
- native_flush_tlb_others
- 99.85% flush_tlb_page
ptep_clear_flush
try_to_unmap_one
rmap_walk
try_to_unmap
migrate_pages
migrate_misplaced_page
- handle_mm_fault
- 99.73% __do_page_fault
trace_do_page_fault
do_async_page_fault
+ async_page_fault
0.63% native_send_call_func_single_ipi
generic_exec_single
smp_call_function_single
This is showing excessive migration activity even though excessive
migrations are meant to get throttled. Normally, the scan rate is tuned
on a per-task basis depending on the locality of faults. However, if
migrations fail for any reason then the PTE scanner may scan faster if
the faults continue to be remote. This means there is higher system CPU
overhead and fault trapping at exactly the time we know that migrations
cannot happen. This patch tracks when migration failures occur and
slows the PTE scanner.
Signed-off-by: Mel Gorman <mgorman@suse.de>
Reported-by: Dave Chinner <david@fromorbit.com>
Tested-by: Dave Chinner <david@fromorbit.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull libata fix from Tejun Heo:
"One patch to fix a regression from the recent switch to blk-mq tag
allocation which can cause oops on SAS-attached SATA drives"
* 'for-4.0-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
ata: Add a new flag to destinguish sas controller
Two fixes here, one typo fix in the documentation and one fix for a
system hang with one of the Palmas chips caused by the use of an
incorrect offset being provided for one of the registers.
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Merge tag 'regulator-fix-v4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"Two fixes here, one typo fix in the documentation and one fix for a
system hang with one of the Palmas chips caused by the use of an
incorrect offset being provided for one of the registers"
* tag 'regulator-fix-v4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: Fix documentation for regmap in the config
regulator: palmas: Correct TPS659038 register definition for REGEN2
This patch fixes a bad interaction between the support that was added
for having regmaps without devices for early system controller
initialization and the trace support. There's a very good analysis of
the actual issue in the commit message for the change.
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Merge tag 'regmap-fix-v4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap fix from Mark Brown:
"This patch fixes a bad interaction between the support that was added
for having regmaps without devices for early system controller
initialization and the trace support.
There's a very good analysis of the actual issue in the commit message
for the change"
* tag 'regmap-fix-v4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: introduce regmap_name to fix syscon regmap trace events
Pull networking fixes from David Miller:
1) Validate iov ranges before feeding them into iov_iter_init(), from
Al Viro.
2) We changed copy_from_msghdr_from_user() to zero out the msg_namelen
is a NULL pointer is given for the msg_name. Do the same in the
compat code too. From Catalin Marinas.
3) Fix partially initialized tuples in netfilter conntrack helper, from
Ian Wilson.
4) Missing continue; statement in nft_hash walker can lead to crashes,
from Herbert Xu.
5) tproxy_tg6_check looks for IP6T_INV_PROTO in ->flags instead of
->invflags, fix from Pablo Neira Ayuso.
6) Incorrect memory account of TCP FINs can result in negative socket
memory accounting values. Fix from Josh Hunt.
7) Don't allow virtual functions to enable VLAN promiscuous mode in
be2net driver, from Vasundhara Volam.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
netfilter: nft_compat: set IP6T_F_PROTO flag if protocol is set
cx82310_eth: wait for firmware to become ready
net: validate the range we feed to iov_iter_init() in sys_sendto/sys_recvfrom
net: compat: Update get_compat_msghdr() to match copy_msghdr_from_user() behaviour
be2net: use PCI MMIO read instead of config read for errors
be2net: restrict MODIFY_EQ_DELAY cmd to a max of 8 EQs
be2net: Prevent VFs from enabling VLAN promiscuous mode
tcp: fix tcp fin memory accounting
ipv6: fix backtracking for throw routes
net: ethernet: pcnet32: Setup the SRAM and NOUFLO on Am79C97{3, 5}
ipv6: call ipv6_proxy_select_ident instead of ipv6_select_ident in udp6_ufo_fragment
netfilter: xt_TPROXY: fix invflags check in tproxy_tg6_check()
netfilter: restore rule tracing via nfnetlink_log
netfilter: nf_tables: allow to change chain policy without hook if it exists
netfilter: Fix potential crash in nft_hash walker
netfilter: Zero the tuple in nfnl_cthelper_parse_tuple()
Pablo Neira Ayuso says:
====================
Netfilter fixes for net
The following patchset contains Netfilter fixes for your net tree,
they are:
1) Fix missing initialization of tuple structure in nfnetlink_cthelper
to avoid mismatches when looking up to attach userspace helpers to
flows, from Ian Wilson.
2) Fix potential crash in nft_hash when we hit -EAGAIN in
nft_hash_walk(), from Herbert Xu.
3) We don't need to indicate the hook information to update the
basechain default policy in nf_tables.
4) Restore tracing over nfnetlink_log due to recent rework to
accomodate logging infrastructure into nf_tables.
5) Fix wrong IP6T_INV_PROTO check in xt_TPROXY.
6) Set IP6T_F_PROTO flag in nft_compat so we can use SYNPROXY6 and
REJECT6 from xt over nftables.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull SCSI target fixes from Nicholas Bellinger:
"Here are current target-pending fixes for v4.0-rc5 code that have made
their way into the queue over the last weeks.
The fixes this round include:
- Fix long-standing iser-target logout bug related to early
conn_logout_comp completion, resulting in iscsi_conn use-after-tree
OOpsen. (Sagi + nab)
- Fix long-standing tcm_fc bug in ft_invl_hw_context() failure
handing for DDP hw offload. (DanC)
- Fix incorrect use of unprotected __transport_register_session() in
tcm_qla2xxx + other single local se_node_acl fabrics. (Bart)
- Fix reference leak in target_submit_cmd() -> target_get_sess_cmd()
for ack_kref=1 failure path. (Bart)
- Fix pSCSI backend ->get_device_type() statistics OOPs with
un-configured device. (Olaf + nab)
- Fix virtual LUN=0 target_configure_device failure OOPs at modprobe
time. (Claudio + nab)
- Fix FUA write false positive failure regression in v4.0-rc1 code.
(Christophe Vu-Brugier + HCH)"
* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
target: do not reject FUA CDBs when write cache is enabled but emulate_write_cache is 0
target: Fix virtual LUN=0 target_configure_device failure OOPs
target/pscsi: Fix NULL pointer dereference in get_device_type
tcm_fc: missing curly braces in ft_invl_hw_context()
target: Fix reference leak in target_get_sess_cmd() error path
loop/usb/vhost-scsi/xen-scsiback: Fix use of __transport_register_session
tcm_qla2xxx: Fix incorrect use of __transport_register_session
iscsi-target: Avoid early conn_logout_comp for iser connections
Revert "iscsi-target: Avoid IN_LOGOUT failure case for iser-target"
target: Disallow changing of WRITE cache/FUA attrs after export
- fix thin target to always zero-fill reads to unprovisioned blocks
- fix to interlock device destruction's suspend from internal suspends
- fix 2 snapshot exception store handover bugs
- fix dm-io to cope with DISCARD and WRITE_SAME capabilities changing
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Merge tag 'dm-4.0-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull devicemapper fixes from Mike Snitzer:
"A handful of stable fixes for DM:
- fix thin target to always zero-fill reads to unprovisioned blocks
- fix to interlock device destruction's suspend from internal
suspends
- fix 2 snapshot exception store handover bugs
- fix dm-io to cope with DISCARD and WRITE_SAME capabilities changing"
* tag 'dm-4.0-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm io: deal with wandering queue limits when handling REQ_DISCARD and REQ_WRITE_SAME
dm snapshot: suspend merging snapshot when doing exception handover
dm snapshot: suspend origin when doing exception handover
dm: hold suspend_lock while suspending device during device deletion
dm thin: fix to consistently zero-fill reads to unprovisioned blocks
A check that rejects a CDB with FUA bit set if no write cache is
emulated was added by the following commit:
fde9f50 target: Add sanity checks for DPO/FUA bit usage
The condition is as follows:
if (!dev->dev_attrib.emulate_fua_write ||
!dev->dev_attrib.emulate_write_cache)
However, this check is wrong if the backend device supports WCE but
"emulate_write_cache" is disabled.
This patch uses se_dev_check_wce() (previously named
spc_check_dev_wce) to invoke transport->get_write_cache() if the
device has a write cache or check the "emulate_write_cache" attribute
otherwise.
Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christophe Vu-Brugier <cvubrugier@fastmail.fm>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
- Fix up consumer return values on pin control stubs.
- Four patches fixing up the interrupt handling and
sleep context save in the Baytrail driver.
- Make default output directions work properly in the
Cherryview driver.
- Fix interrupt locking in the AT91 driver.
- Fix setting interrupt generating lines as input in
the sunxi driver.
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Merge tag 'pinctrl-v4.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"Here is a slew of pin control fixes I've accumulated for the v4.0
kernel. Nothing special, just driver fixes (mainly embedded Intel it
seems) and a misunderstanding regarding the stub functions was
reverted:
- Fix up consumer return values on pin control stubs.
- Four patches fixing up the interrupt handling and sleep context
save in the Baytrail driver.
- Make default output directions work properly in the Cherryview
driver.
- Fix interrupt locking in the AT91 driver.
- Fix setting interrupt generating lines as input in the sunxi
driver"
* tag 'pinctrl-v4.0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: sun4i: GPIOs configured as irq must be set to input before reading
pinctrl: at91: move lock/unlock_as_irq calls into request/release
pinctrl: update direction_output function of cherryview driver
pinctrl: baytrail: Save pin context over system sleep
pinctrl: baytrail: Rework interrupt handling
pinctrl: baytrail: Clear interrupt triggering from pins that are in GPIO mode
pinctrl: baytrail: Relax GPIO request rules
Revert "pinctrl: consumer: use correct retval for placeholder functions"
Pull networking fixes from David Miller:
1) Fix packet header offset calculation in _decode_session6(), from
Hajime Tazaki.
2) Fix route leak in error paths of xfrm_lookup(), from Huaibin Wang.
3) Be sure to clear state properly when scans fail in iwlwifi mvm code,
from Luciano Coelho.
4) iwlwifi tries to stop scans that aren't actually running, also from
Luciano Coelho.
5) mac80211 should drop mesh frames that are not encrypted, fix from
Bob Copeland.
6) Add new device ID to b43 wireless driver for BCM432228 chips, from
Rafał Miłecki.
7) Fix accidental addition of members after variable sized array in
struct tc_u_hnode, from WANG Cong.
8) Don't re-enable interrupts until after we call napi_complete() in
ibmveth and WIZnet drivers, frm Yongbae Park.
9) Fix regression in vlan tag handling of fec driver, from Fugang Duan.
10) If a network namespace change fails during rtnl_newlink(), we don't
unwind the device registry properly.
11) Fix two TCP regressions, from Neal Cardwell:
- Don't allow snd_cwnd_cnt to accumulate huge values due to missing
test in tcp_cong_avoid_ai().
- Restore CUBIC back to advancing cwnd by 1.5x packets per RTT.
12) Fix performance regression in xne-netback involving push TX
notifications, from David Vrabel.
13) __skb_tstamp_tx() can be called with a NULL sk pointer, do not
dereference blindly. From Willem de Bruijn.
14) Fix potential stack overflow in RDS protocol stack, from Arnd
Bergmann.
15) VXLAN_VID_MASK used incorrectly in new remote checksum offload
support of VXLAN driver. Fix from Alexey Kodanev.
16) Fix too small netlink SKB allocation in inet_diag layer, from Eric
Dumazet.
17) ieee80211_check_combinations() does not count interfaces correctly,
from Andrei Otcheretianski.
18) Hardware feature determination in bxn2x driver references a piece of
software state that actually isn't initialized yet, fix from Michal
Schmidt.
19) inet_csk_wait_for_connect() needs a sched_annotate_sleep()
annoation, from Eric Dumazet.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (56 commits)
Revert "net: cx82310_eth: use common match macro"
net/mlx4_en: Set statistics bitmap at port init
IB/mlx4: Saturate RoCE port PMA counters in case of overflow
net/mlx4_en: Fix off-by-one in ethtool statistics display
IB/mlx4: Verify net device validity on port change event
act_bpf: allow non-default TC_ACT opcodes as BPF exec outcome
Revert "smc91x: retrieve IRQ and trigger flags in a modern way"
inet: Clean up inet_csk_wait_for_connect() vs. might_sleep()
ip6_tunnel: fix error code when tunnel exists
netdevice.h: fix ndo_bridge_* comments
bnx2x: fix encapsulation features on 57710/57711
mac80211: ignore CSA to same channel
nl80211: ignore HT/VHT capabilities without QoS/WMM
mac80211: ask for ECSA IE to be considered for beacon parse CRC
mac80211: count interfaces correctly for combination checks
isdn: icn: use strlcpy() when parsing setup options
rxrpc: bogus MSG_PEEK test in rxrpc_recvmsg()
caif: fix MSG_OOB test in caif_seqpkt_recvmsg()
bridge: reset bridge mtu after deleting an interface
can: kvaser_usb: Fix tx queue start/stop race conditions
...
SAS controller has its own tag allocation, which doesn't directly match to ATA
tag, so SAS and SATA have different code path for ata tags. Originally we use
port->scsi_host (98bd4be1) to destinguish SAS controller, but libsas set
->scsi_host too, so we can't use it for the destinguish, we add a new flag for
this purpose.
Without this patch, the following oops can happen because scsi-mq uses
a host-wide tag map shared among all devices with some integer tag
values >= ATA_MAX_QUEUE. These unexpectedly high tag values cause
__ata_qc_from_tag() to return NULL, which is then dereferenced in
ata_qc_new_init().
BUG: unable to handle kernel NULL pointer dereference at 0000000000000058
IP: [<ffffffff804fd46e>] ata_qc_new_init+0x3e/0x120
PGD 32adf0067 PUD 32adf1067 PMD 0
Oops: 0002 [#1] SMP DEBUG_PAGEALLOC
Modules linked in: iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi igb
i2c_algo_bit ptp pps_core pm80xx libsas scsi_transport_sas sg coretemp
eeprom w83795 i2c_i801
CPU: 4 PID: 1450 Comm: cydiskbench Not tainted 4.0.0-rc3 #1
Hardware name: Supermicro X8DTH-i/6/iF/6F/X8DTH, BIOS 2.1b 05/04/12
task: ffff8800ba86d500 ti: ffff88032a064000 task.ti: ffff88032a064000
RIP: 0010:[<ffffffff804fd46e>] [<ffffffff804fd46e>] ata_qc_new_init+0x3e/0x120
RSP: 0018:ffff88032a067858 EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff8800ba0d2230 RCX: 000000000000002a
RDX: ffffffff80505ae0 RSI: 0000000000000020 RDI: ffff8800ba0d2230
RBP: ffff88032a067868 R08: 0000000000000201 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8800ba0d0000
R13: ffff8800ba0d2230 R14: ffffffff80505ae0 R15: ffff8800ba0d0000
FS: 0000000041223950(0063) GS:ffff88033e480000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000058 CR3: 000000032a0a3000 CR4: 00000000000006e0
Stack:
ffff880329eee758 ffff880329eee758 ffff88032a0678a8 ffffffff80502dad
ffff8800ba167978 ffff880329eee758 ffff88032bf9c520 ffff8800ba167978
ffff88032bf9c520 ffff88032bf9a290 ffff88032a0678b8 ffffffff80506909
Call Trace:
[<ffffffff80502dad>] ata_scsi_translate+0x3d/0x1b0
[<ffffffff80506909>] ata_sas_queuecmd+0x149/0x2a0
[<ffffffffa0046650>] sas_queuecommand+0xa0/0x1f0 [libsas]
[<ffffffff804ea544>] scsi_dispatch_cmd+0xd4/0x1a0
[<ffffffff804eb50f>] scsi_queue_rq+0x66f/0x7f0
[<ffffffff803e5098>] __blk_mq_run_hw_queue+0x208/0x3f0
[<ffffffff803e54b8>] blk_mq_run_hw_queue+0x88/0xc0
[<ffffffff803e5c74>] blk_mq_insert_request+0xc4/0x130
[<ffffffff803e0b63>] blk_execute_rq_nowait+0x73/0x160
[<ffffffffa0023fca>] sg_common_write+0x3da/0x720 [sg]
[<ffffffffa0025100>] sg_new_write+0x250/0x360 [sg]
[<ffffffffa0025feb>] sg_write+0x13b/0x450 [sg]
[<ffffffff8032ec91>] vfs_write+0xd1/0x1b0
[<ffffffff8032ee54>] SyS_write+0x54/0xc0
[<ffffffff80689932>] system_call_fastpath+0x12/0x17
tj: updated description.
Fixes: 12cb5ce101 ("libata: use blk taging")
Reported-and-tested-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Since fab4085 ("netfilter: log: nf_log_packet() as real unified
interface"), the loginfo structure that is passed to nf_log_packet() is
used to explicitly indicate the logger type you want to use.
This is a problem for people tracing rules through nfnetlink_log since
packets are always routed to the NF_LOG_TYPE logger after the
aforementioned patch.
We can fix this by removing the trace loginfo structures, but that still
changes the log level from 4 to 5 for tracing messages and there may be
someone relying on this outthere. So let's just introduce a new
nf_log_trace() function that restores the former behaviour.
Reported-by: Markus Kötter <koetter@rrzn.uni-hannover.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Pull livepatching fix from Jiri Kosina:
- fix for potential race with module loading, from Petr Mladek.
The race is very unlikely to be seen in real world and has been found
by code inspection, but should be fixed for 4.0 anyway.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching:
livepatch: Fix subtle race with coming and going modules
The argument 'flags' was missing in ndo_bridge_setlink().
ndo_bridge_dellink() was missing.
Fixes: 407af3299e ("bridge: Add netlink interface to configure vlans on bridge ports")
Fixes: add511b382 ("bridge: add flags argument to ndo_bridge_setlink and ndo_bridge_dellink")
CC: Vlad Yasevich <vyasevic@redhat.com>
CC: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
more minor issues with our virtio 1.0 drivers just introduced in the
kernel.
(I would normally use my fixes branch for this, but there were a batch of them...)
Thanks,
Rusty.
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Merge tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux
Pull virtio fixes from Rusty Russell:
"Not entirely surprising: the ongoing QEMU work on virtio 1.0 has
revealed more minor issues with our virtio 1.0 drivers just introduced
in the kernel.
(I would normally use my fixes branch for this, but there were a batch
of them...)"
* tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
virtio_mmio: fix access width for mmio
uapi/virtio_scsi: allow overriding CDB/SENSE size
virtio_mmio: generation support
virtio_rpmsg: set DRIVER_OK before using device
9p/trans_virtio: fix hot-unplug
virtio-balloon: do not call blocking ops when !TASK_RUNNING
virtio_blk: fix comment for virtio 1.0
virtio_blk: typo fix
virtio_balloon: set DRIVER_OK before using device
virtio_console: avoid config access from irq
virtio_console: init work unconditionally
Pull kvm fixes from Marcelo Tosatti:
"KVM bug fixes (ARM and x86)"
* git://git.kernel.org/pub/scm/virt/kvm/kvm:
arm/arm64: KVM: Keep elrsr/aisr in sync with software model
KVM: VMX: Set msr bitmap correctly if vcpu is in guest mode
arm/arm64: KVM: fix missing unlock on error in kvm_vgic_create()
kvm: x86: i8259: return initialized data on invalid-size read
arm64: KVM: Fix outdated comment about VTCR_EL2.PS
arm64: KVM: Do not use pgd_index to index stage-2 pgd
arm64: KVM: Fix stage-2 PGD allocation to have per-page refcounting
kvm: move advertising of KVM_CAP_IRQFD to common code
Add a tuning knob so we can adjust the dirtytime expiration timeout,
which is very useful for testing lazytime.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
Jan Kara pointed out that if there is an inode which is constantly
getting dirtied with I_DIRTY_PAGES, an inode with an updated timestamp
will never be written since inode->dirtied_when is constantly getting
updated. We fix this by adding an extra field to the inode,
dirtied_time_when, so inodes with a stale dirtytime can get detected
and handled.
In addition, if we have a dirtytime inode caused by an atime update,
and there is no write activity on the file system, we need to have a
secondary system to make sure these inodes get written out. We do
this by setting up a second delayed work structure which wakes up the
CPU much more rarely compared to writeback_expire_centisecs.
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Jan Kara <jack@suse.cz>
The register offset for REGEN2_CTRL in different for TPS659038 chip as when
compared with other Palmas family PMICs. In the case of TPS659038 the wrong
offset pointed to PLLEN_CTRL and was causing a hang. Correcting the same.
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
There is a notifier that handles live patches for coming and going modules.
It takes klp_mutex lock to avoid races with coming and going patches but
it does not keep the lock all the time. Therefore the following races are
possible:
1. The notifier is called sometime in STATE_MODULE_COMING. The module
is visible by find_module() in this state all the time. It means that
new patch can be registered and enabled even before the notifier is
called. It might create wrong order of stacked patches, see below
for an example.
2. New patch could still see the module in the GOING state even after
the notifier has been called. It will try to initialize the related
object structures but the module could disappear at any time. There
will stay mess in the structures. It might even cause an invalid
memory access.
This patch solves the problem by adding a boolean variable into struct module.
The value is true after the coming and before the going handler is called.
New patches need to be applied when the value is true and they need to ignore
the module when the value is false.
Note that we need to know state of all modules on the system. The races are
related to new patches. Therefore we do not know what modules will get
patched.
Also note that we could not simply ignore going modules. The code from the
module could be called even in the GOING state until mod->exit() finishes.
If we start supporting patches with semantic changes between function
calls, we need to apply new patches to any still usable code.
See below for an example.
Finally note that the patch solves only the situation when a new patch is
registered. There are no such problems when the patch is being removed.
It does not matter who disable the patch first, whether the normal
disable_patch() or the module notifier. There is nothing to do
once the patch is disabled.
Alternative solutions:
======================
+ reject new patches when a patched module is coming or going; this is ugly
+ wait with adding new patch until the module leaves the COMING and GOING
states; this might be dangerous and complicated; we would need to release
kgr_lock in the middle of the patch registration to avoid a deadlock
with the coming and going handlers; also we might need a waitqueue for
each module which seems to be even bigger overhead than the boolean
+ stop modules from entering COMING and GOING states; wait until modules
leave these states when they are already there; looks complicated; we would
need to ignore the module that asked to stop the others to avoid a deadlock;
also it is unclear what to do when two modules asked to stop others and
both are in COMING state (situation when two new patches are applied)
+ always register/enable new patches and fix up the potential mess (registered
patches order) in klp_module_init(); this is nasty and prone to regressions
in the future development
+ add another MODULE_STATE where the kallsyms are visible but the module is not
used yet; this looks too complex; the module states are checked on "many"
locations
Example of patch stacking breakage:
===================================
The notifier could _not_ _simply_ ignore already initialized module objects.
For example, let's have three patches (P1, P2, P3) for functions a() and b()
where a() is from vmcore and b() is from a module M. Something like:
a() b()
P1 a1() b1()
P2 a2() b2()
P3 a3() b3(3)
If you load the module M after all patches are registered and enabled.
The ftrace ops for function a() and b() has listed the functions in this
order:
ops_a->func_stack -> list(a3,a2,a1)
ops_b->func_stack -> list(b3,b2,b1)
, so the pointer to b3() is the first and will be used.
Then you might have the following scenario. Let's start with state when patches
P1 and P2 are registered and enabled but the module M is not loaded. Then ftrace
ops for b() does not exist. Then we get into the following race:
CPU0 CPU1
load_module(M)
complete_formation()
mod->state = MODULE_STATE_COMING;
mutex_unlock(&module_mutex);
klp_register_patch(P3);
klp_enable_patch(P3);
# STATE 1
klp_module_notify(M)
klp_module_notify_coming(P1);
klp_module_notify_coming(P2);
klp_module_notify_coming(P3);
# STATE 2
The ftrace ops for a() and b() then looks:
STATE1:
ops_a->func_stack -> list(a3,a2,a1);
ops_b->func_stack -> list(b3);
STATE2:
ops_a->func_stack -> list(a3,a2,a1);
ops_b->func_stack -> list(b2,b1,b3);
therefore, b2() is used for the module but a3() is used for vmcore
because they were the last added.
Example of the race with going modules:
=======================================
CPU0 CPU1
delete_module() #SYSCALL
try_stop_module()
mod->state = MODULE_STATE_GOING;
mutex_unlock(&module_mutex);
klp_register_patch()
klp_enable_patch()
#save place to switch universe
b() # from module that is going
a() # from core (patched)
mod->exit();
Note that the function b() can be called until we call mod->exit().
If we do not apply patch against b() because it is in MODULE_STATE_GOING,
it will call patched a() with modified semantic and things might get wrong.
[jpoimboe@redhat.com: use one boolean instead of two]
Signed-off-by: Petr Mladek <pmladek@suse.cz>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Fixes page refcounting issues in our Stage-2 page table management code,
fixes a missing unlock in a gicv3 error path, and fixes a race that can
cause lost interrupts if signals are pending just prior to entering the
guest.
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Merge tag 'kvm-arm-fixes-4.0-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm
Fixes for KVM/ARM for 4.0-rc5.
Fixes page refcounting issues in our Stage-2 page table management code,
fixes a missing unlock in a gicv3 error path, and fixes a race that can
cause lost interrupts if signals are pending just prior to entering the
guest.
Steffen Klassert says:
====================
pull request (net): ipsec 2015-03-16
1) Fix the network header offset in _decode_session6
when multiple IPv6 extension headers are present.
From Hajime Tazaki.
2) Fix an interfamily tunnel crash. We set outer mode
protocol too early and may dispatch to the wrong
address family. Move the setting of the outer mode
protocol behind the last accessing of the inner mode
to fix the crash.
3) Most callers of xfrm_lookup() expect that dst_orig
is released on error. But xfrm_lookup_route() may
need dst_orig to handle certain error cases. So
introduce a flag that tells what should be done in
case of error. From Huaibin Wang.
Please pull or let me know if there are problems.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
driver fixes for new regressions since v3.19. Second are fixes to the
common clock divider type caused by recent changes to how we round clock
rates. This affects many clock drivers that use this common code.
Finally there are fixes for drivers that improperly compared struct clk
pointers (drivers must not deref these pointers). While some of these
drivers have done this for a long time, this did not cause a problem
until we started generating unique struct clk pointers for every
consumer. A new function, clk_is_match was introduced to get these
drivers working again and they are fixed up to no longer deref the
pointers themselves.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clock framework fixes from Michael Turquette:
"The clk fixes for 4.0-rc4 comprise three themes.
First are the usual driver fixes for new regressions since v3.19.
Second are fixes to the common clock divider type caused by recent
changes to how we round clock rates. This affects many clock drivers
that use this common code.
Finally there are fixes for drivers that improperly compared struct
clk pointers (drivers must not deref these pointers). While some of
these drivers have done this for a long time, this did not cause a
problem until we started generating unique struct clk pointers for
every consumer. A new function, clk_is_match was introduced to get
these drivers working again and they are fixed up to no longer deref
the pointers themselves"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
ASoC: kirkwood: fix struct clk pointer comparing
ASoC: fsl_spdif: fix struct clk pointer comparing
ARM: imx: fix struct clk pointer comparing
clk: introduce clk_is_match
clk: don't export static symbol
clk: divider: fix calculation of initial best divider when rounding to closest
clk: divider: fix selection of divider when rounding to closest
clk: divider: fix calculation of maximal parent rate for a given divider
clk: divider: return real rate instead of divider value
clk: qcom: fix platform_no_drv_owner.cocci warnings
clk: qcom: fix platform_no_drv_owner.cocci warnings
clk: qcom: Add PLL4 vote clock
clk: qcom: lcc-msm8960: Fix PLL rate detection
clk: qcom: Fix slimbus n and m val offsets
clk: ti: Fix FAPLL parent enable bit handling
This is a rather unpleasantly large set of bug fixes for arm-soc,
Most of them because of cross-tree dependencies for Exynos
where we should have figured out the right path to merge things
before the merge window, and then the maintainer being unable to
sort things out in time during a business trip.
The other changes contained here are the usual collection:
MAINTAINERS file updates
- Gregory Clement is now a co-maintainer for the legacy Marvell EBU
platforms
- A MAINTAINERS entry for the Freescale Vybrid platform that was
added last year
- Matt Porter no longer works as a maintainer on Broadcom SoCs
Build-time issues
- A compile-time error for at91
- Several minor DT fixes on at91, imx, exynos, socfpga, and omap
- The new digicolor platform was not correctly enabled at all
Configuration issues
- Two defconfig fix for regressions using USB on versatile
express and on OMAP3
- Enabling all 8 CPUs on Allwinner/SUNxi
- Enabling the new STiH410 platform to be usable
Bug fixes in platform code
- A missing barrier for socfpga
- Fixing LPDDR1 self-refresh mode on at91
- Fixing RTC interrupt numbers on Exynos3250
- Fixing a cache-coherency issues in CPU power-down
on Exynos5
- Multiple small OMAP power management fixes
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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:
"This is a rather unpleasantly large set of bug fixes for arm-soc, Most
of them because of cross-tree dependencies for Exynos where we should
have figured out the right path to merge things before the merge
window, and then the maintainer being unable to sort things out in
time during a business trip.
The other changes contained here are the usual collection:
MAINTAINERS file updates
- Gregory Clement is now a co-maintainer for the legacy Marvell EBU
platforms
- A MAINTAINERS entry for the Freescale Vybrid platform that was
added last year
- Matt Porter no longer works as a maintainer on Broadcom SoCs
Build-time issues
- A compile-time error for at91
- Several minor DT fixes on at91, imx, exynos, socfpga, and omap
- The new digicolor platform was not correctly enabled at all
Configuration issues
- Two defconfig fix for regressions using USB on versatile express
and on OMAP3
- Enabling all 8 CPUs on Allwinner/SUNxi
- Enabling the new STiH410 platform to be usable
Bug fixes in platform code
- A missing barrier for socfpga
- Fixing LPDDR1 self-refresh mode on at91
- Fixing RTC interrupt numbers on Exynos3250
- Fixing a cache-coherency issues in CPU power-down on Exynos5
- Multiple small OMAP power management fixes"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (69 commits)
MAINTAINERS: Add myself as co-maintainer to the legacy support of the mvebu SoCs
ARM: at91: pm_slowclock: fix the compilation error
ARM: at91/dt: fix USB high-speed clock to select UTMI
ARM: at91/dt: fix at91 udc compatible strings
ARM: at91/dt: declare matrix node as a syscon device
ARM: vexpress: update CONFIG_USB_ISP1760 option
ARM: digicolor: add the machine directory to Makefile
ARM: STi: Add STiH410 SoC support
MAINTAINERS: add Freescale Vybrid SoC
MAINTAINERS: Remove self as ARM mach-bcm co-maintainer
ARM: imx6sl-evk: set swbst_reg as vbus's parent reg
ARM: imx6qdl-sabresd: set swbst_reg as vbus's parent reg
ARM: at91/dt: at91sam9261: fix clocks and clock-names in udc definition
ARM: OMAP2+: Fix wl12xx on dm3730-evm with mainline u-boot
ARM: OMAP: enable TWL4030_USB in omap2plus_defconfig
ARM: dts: dra7x-evm: avoid possible contention while muxing on CAN lines
ARM: dts: dra7x-evm: Don't use dcan1_rx.gpio1_15 in DCAN pinctrl
ARM: dts: am43xx: fix SLEWCTRL_FAST pinctrl binding
ARM: dts: am33xx: fix SLEWCTRL_FAST pinctrl binding
ARM: dts: OMAP5: fix polling intervals for thermal zones
...
- armada-370-xp
- Chained per-cpu interrupts
- gic{,-v3,v3-its}
- Various fixes for safer operation
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Merge tag 'irqchip-fixes-4.0' of git://git.infradead.org/users/jcooper/linux
Pull irqchip fixes from Jason Cooper:
"armada-370-xp:
- Chained per-cpu interrupts
gic{,-v3,v3-its}"
- Various fixes for safer operation"
* tag 'irqchip-fixes-4.0' of git://git.infradead.org/users/jcooper/linux:
irqchip: gicv3-its: Support safe initialization
irqchip: gicv3-its: Define macros for GITS_CTLR fields
irqchip: gicv3-its: Add limitation to page order
irqchip: gicv3-its: Use 64KB page as default granule
irqchip: gicv3-its: Zero itt before handling to hardware
irqchip: gic-v3: Fix out of bounds access to cpu_logical_map
irqchip: gic: Fix unsafe locking reported by lockdep
irqchip: gicv3-its: Fix unsafe locking reported by lockdep
irqchip: gicv3-its: Iterate over PCI aliases to generate ITS configuration
irqchip: gicv3-its: Allocate enough memory for the full range of DeviceID
irqchip: gicv3-its: Fix ITS CPU init
irqchip: armada-370-xp: Fix chained per-cpu interrupts
There is an interesting bug in the vgic code, which manifests itself
when the KVM run loop has a signal pending or needs a vmid generation
rollover after having disabled interrupts but before actually switching
to the guest.
In this case, we flush the vgic as usual, but we sync back the vgic
state and exit to userspace before entering the guest. The consequence
is that we will be syncing the list registers back to the software model
using the GICH_ELRSR and GICH_EISR from the last execution of the guest,
potentially overwriting a list register containing an interrupt.
This showed up during migration testing where we would capture a state
where the VM has masked the arch timer but there were no interrupts,
resulting in a hung test.
Cc: Marc Zyngier <marc.zyngier@arm.com>
Reported-by: Alex Bennee <alex.bennee@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
- Fix a PV regression in 3.19.
- Fix a dom0 crash on hosts with large numbers of PIRQs.
- Prevent pcifront from disabling memory or I/O port access, which may
trigger host crashes.
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Merge tag 'stable/for-linus-4.0-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen bug fixes from David Vrabel:
- fix a PV regression in 3.19.
- fix a dom0 crash on hosts with large numbers of PIRQs.
- prevent pcifront from disabling memory or I/O port access, which may
trigger host crashes.
* tag 'stable/for-linus-4.0-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen-pciback: limit guest control of command register
xen/events: avoid NULL pointer dereference in dom0 on large machines
xen: Remove trailing semicolon from xenbus_register_frontend() definition
x86/xen: correct bug in p2m list initialization
- Fix for stdout-path option parsing with added unittest
- Fix for stdout-path interaction with earlycon
- Several DT unittest fixes
- Fix Sparc allmodconfig build error on
of_platform_register_reconfig_notifier
- Several DT overlay kconfig and build warning fixes
- Several DT binding documentation updates
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Merge tag 'devicetree-fixes-for-4.0' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull DeviceTree fixes from Rob Herring:
- fix for stdout-path option parsing with added unittest
- fix for stdout-path interaction with earlycon
- several DT unittest fixes
- fix Sparc allmodconfig build error on of_platform_register_reconfig_notifier
- several DT overlay kconfig and build warning fixes
- several DT binding documentation updates
* tag 'devicetree-fixes-for-4.0' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
of/platform: Fix sparc:allmodconfig build
of: unittest: Add options string testcase variants
of: fix handling of '/' in options for of_find_node_by_path()
of/unittest: Fix the wrong expected value in of_selftest_property_string
of/unittest: remove the duplicate of_changeset_init
dt: submitting-patches: clarify that DT maintainers are to be cced on bindings
of: unittest: fix I2C dependency
of/overlay: Remove unused variable
Documentation: DT: Renamed of-serial.txt to 8250.txt
of: Fix premature bootconsole disable with 'stdout-path'
serial: add device tree binding documentation for ETRAX FS UART
of/overlay: Directly include idr.h
of: Drop superfluous dependance for OF_OVERLAY
of: Add vendor prefix for Arasan
of: Add prompt for OF_OVERLAY config
Pull gadgetfs fixes from Al Viro:
"Assorted fixes around AIO on gadgetfs: leaks, use-after-free, troubles
caused by ->f_op flipping"
* 'gadget' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
gadgetfs: really get rid of switching ->f_op
gadgetfs: get rid of flipping ->f_op in ep_config()
gadget: switch ep_io_operations to ->read_iter/->write_iter
gadgetfs: use-after-free in ->aio_read()
gadget/function/f_fs.c: switch to ->{read,write}_iter()
gadget/function/f_fs.c: use put iov_iter into io_data
gadget/function/f_fs.c: close leaks
move iov_iter.c from mm/ to lib/
new helper: dup_iter()
commit dfd8645ea1 wrongly assumes that VXLAN_VDI_MASK includes
eight lower order reserved bits of VNI field that are using for remote
checksum offload.
Right now, when VNI number greater then 0xffff, vxlan_udp_encap_recv()
will always return with 'bad_flag' error, reducing the usable vni range
from 0..16777215 to 0..65535. Also, it doesn't really check whether RCO
bits processed or not.
Fix it by adding new VNI mask which has all 32 bits of VNI field:
24 bits for id and 8 bits for other usage.
Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
sparc:allmodconfig fails to build with:
drivers/built-in.o: In function `platform_bus_init':
(.init.text+0x3684): undefined reference to `of_platform_register_reconfig_notifier'
of_platform_register_reconfig_notifier is only declared if both OF_ADDRESS
and OF_DYNAMIC are configured. Yet, the include file only declares a dummy
function if OF_DYNAMIC is not configured. The sparc architecture does not
configure OF_ADDRESS, but does configure OF_DYNAMIC, causing above error.
Fixes: 801d728c10 ("of/reconfig: Add OF_DYNAMIC notifier for platform_bus_type")
Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Rob Herring <robh@kernel.org>
QEMU wants to use virtio scsi structures with
a different VIRTIO_SCSI_CDB_SIZE/VIRTIO_SCSI_SENSE_SIZE,
let's add ifdefs to allow overriding them.
Keep the old defines under new names:
VIRTIO_SCSI_CDB_DEFAULT_SIZE/VIRTIO_SCSI_SENSE_DEFAULT_SIZE,
since that's what these values really are:
defaults for cdb/sense size fields.
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
include/linux/moduleloader.h is more suitable place for this macro.
Also change alignment to PAGE_SIZE for CONFIG_KASAN=n as such
alignment already assumed in several places.
Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Current approach in handling shadow memory for modules is broken.
Shadow memory could be freed only after memory shadow corresponds it is no
longer used. vfree() called from interrupt context could use memory its
freeing to store 'struct llist_node' in it:
void vfree(const void *addr)
{
...
if (unlikely(in_interrupt())) {
struct vfree_deferred *p = this_cpu_ptr(&vfree_deferred);
if (llist_add((struct llist_node *)addr, &p->list))
schedule_work(&p->wq);
Later this list node used in free_work() which actually frees memory.
Currently module_memfree() called in interrupt context will free shadow
before freeing module's memory which could provoke kernel crash.
So shadow memory should be freed after module's memory. However, such
deallocation order could race with kasan_module_alloc() in module_alloc().
Free shadow right before releasing vm area. At this point vfree()'d
memory is not used anymore and yet not available for other allocations.
New VM_KASAN flag used to indicate that vm area has dynamically allocated
shadow memory so kasan frees shadow only if it was previously allocated.
Signed-off-by: Andrey Ryabinin <a.ryabinin@samsung.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
John reported that my previous commit added a regression
on his router.
This is because sender_cpu & napi_id share a common location,
so get_xps_queue() can see garbage and perform an out of bound access.
We need to make sure sender_cpu is cleared before doing the transmit,
otherwise any NIC busy poll enabled (skb_mark_napi_id()) can trigger
this bug.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: John <jw@nuclearfallout.net>
Bisected-by: John <jw@nuclearfallout.net>
Fixes: 2bd82484bb ("xps: fix xps for stacked devices")
Signed-off-by: David S. Miller <davem@davemloft.net>
Some drivers compare struct clk pointers as a means of knowing
if the two pointers reference the same clock hardware. This behavior is
dubious (drivers must not dereference struct clk), but did not cause any
regressions until the per-user struct clk patch was merged. Now the test
for matching clk's will always fail with per-user struct clk's.
clk_is_match is introduced to fix the regression and prevent drivers
from comparing the pointers manually.
Fixes: 035a61c314 ("clk: Make clk API return per-user struct clk instances")
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
[arnd@arndb.de: Fix COMMON_CLK=N && HAS_CLK=Y config]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
[sboyd@codeaurora.org: const arguments to clk_is_match() and
remove unnecessary ternary operation]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
with the bigger changes being for the dra7 clocks and hwmod data:
- Fix wl12xx for dm3730-evm
- Fix omap4 prm save and clea
- Fix hwmod clkdm use count
- Fix hwmod data for pcie on dra7
- Fix lockdep for hwmod
- Fix USB on most omap3 boars by enabling it in the defconfig
- Fix the bypass clock source for omap5 and dra7
- Fix the ehrpwm clock for am33xx and am43xx
- Enable AES and SHAM for BeagleBone white
- Use rmii clock for am335x-lxm
- Fix polling intervals for omap5 thermal zones
- Fix slewctrl for am33xx and am43xx
- Fix dra7-evm dcan pinctrl
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Merge tag 'fixes-v4.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Pull "omap fixes against v4.0-rc2" from Tony Lindgren:
Fixes for various omap variants, mostly minor fixes for various SoCs
with the bigger changes being for the dra7 clocks and hwmod data:
- Fix wl12xx for dm3730-evm
- Fix omap4 prm save and clea
- Fix hwmod clkdm use count
- Fix hwmod data for pcie on dra7
- Fix lockdep for hwmod
- Fix USB on most omap3 boars by enabling it in the defconfig
- Fix the bypass clock source for omap5 and dra7
- Fix the ehrpwm clock for am33xx and am43xx
- Enable AES and SHAM for BeagleBone white
- Use rmii clock for am335x-lxm
- Fix polling intervals for omap5 thermal zones
- Fix slewctrl for am33xx and am43xx
- Fix dra7-evm dcan pinctrl
* tag 'fixes-v4.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP2+: Fix wl12xx on dm3730-evm with mainline u-boot
ARM: OMAP: enable TWL4030_USB in omap2plus_defconfig
ARM: dts: dra7x-evm: avoid possible contention while muxing on CAN lines
ARM: dts: dra7x-evm: Don't use dcan1_rx.gpio1_15 in DCAN pinctrl
ARM: dts: am43xx: fix SLEWCTRL_FAST pinctrl binding
ARM: dts: am33xx: fix SLEWCTRL_FAST pinctrl binding
ARM: dts: OMAP5: fix polling intervals for thermal zones
ARM: dts: am335x-lxm: Use rmii-clock-ext
ARM: dts: am335x-bone-common: enable aes and sham
ARM: dts: am43xx-clocks: Fix ehrpwm tbclk data on am43xx
ARM: dts: am33xx-clocks: Fix ehrpwm tbclk data on am33xx
ARM: dts: OMAP5: Fix the bypass clock source for dpll_iva and others
ARM: dts: DRA7x: Fix the bypass clock source for dpll_iva and others
ARM: OMAP4+: PRM: fix omap4 version of prm_save_and_clear_irqen
ARM: OMAP2+: hwmod: fix deassert hardreset clkdm usecounting
ARM: DRA7: hwmod_data: Fix hwmod data for pcie
ARM: omap2+: omap_hwmod: Set unique lock_class_key per hwmod
Fix up comment to match virtio 1.0 logic:
virtio_blk_outhdr isn't the first elements anymore,
the only requirement is that it comes first in
the s/g list.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Now that QEmu reuses linux virtio headers, we noticed
a typo in the exported virtio block header. Fix it up.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
