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A typical use of bitwise expression is to mask out parts of an IP
address when matching on the network part only. Optimize for this common
use with a fast variant for NFT_BITWISE_BOOL-type expressions operating
on 32bit-sized values.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Add a boolean indicating NFT_CMP_NEQ. To include it into the match
decision, it is sufficient to XOR it with the data comparison's result.
While being at it, store the mask that is calculated during expression
init and free the eval routine from having to recalculate it each time.
Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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From time to time there are lockdep reports similar to this one:
WARNING: possible circular locking dependency detected
------------------------------------------------------
000000004f61aa56 (&table[i].mutex){+.+.}, at: nfnl_lock [nfnetlink]
but task is already holding lock:
[..] (&net->nft.commit_mutex){+.+.}, at: nf_tables_valid_genid [nf_tables]
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (&net->nft.commit_mutex){+.+.}:
[..]
nf_tables_valid_genid+0x18/0x60 [nf_tables]
nfnetlink_rcv_batch+0x24c/0x620 [nfnetlink]
nfnetlink_rcv+0x110/0x140 [nfnetlink]
netlink_unicast+0x12c/0x1e0
[..]
sys_sendmsg+0x18/0x40
linux_sparc_syscall+0x34/0x44
-> #0 (&table[i].mutex){+.+.}:
[..]
nfnl_lock+0x24/0x40 [nfnetlink]
ip_set_nfnl_get_byindex+0x19c/0x280 [ip_set]
set_match_v1_checkentry+0x14/0xc0 [xt_set]
xt_check_match+0x238/0x260 [x_tables]
__nft_match_init+0x160/0x180 [nft_compat]
[..]
sys_sendmsg+0x18/0x40
linux_sparc_syscall+0x34/0x44
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&net->nft.commit_mutex);
lock(&table[i].mutex);
lock(&net->nft.commit_mutex);
lock(&table[i].mutex);
Lockdep considers this an ABBA deadlock because the different nfnl subsys
mutexes reside in the same lockdep class, but this is a false positive.
CPU1 table[i] refers to the nftables subsys mutex, whereas CPU1 locks
the ipset subsys mutex.
Yi Che reported a similar lockdep splat, this time between ipset and
ctnetlink subsys mutexes.
Time to place them in distinct classes to avoid these warnings.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Currently netadmin inside non-trusted container can quickly allocate
whole node's memory via request of huge ipset hashtable.
Other ipset-related memory allocations should be restricted too.
v2: fixed typo ALLOC -> ACCOUNT
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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commit 9a32669fecfb ("netfilter: nf_tables_offload: support indr block call")
left behind this.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Pinned pages are not properly accounted particularly when
mapping error occurs on IOTLB update. Clean up dangling
pinned pages for the error path. As the inflight pinned
pages, specifically for memory region that strides across
multiple chunks, would need more than one free page for
book keeping and accounting. For simplicity, pin pages
for all memory in the IOVA range in one go rather than
have multiple pin_user_pages calls to make up the entire
region. This way it's easier to track and account the
pages already mapped, particularly for clean-up in the
error path.
Fixes: 4c8cf31885f6 ("vhost: introduce vDPA-based backend")
Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
Link: https://lore.kernel.org/r/1601701330-16837-3-git-send-email-si-wei.liu@oracle.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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vhost_vdpa_map() should remove the iotlb entry just added
if the corresponding mapping fails to set up properly.
Fixes: 4c8cf31885f6 ("vhost: introduce vDPA-based backend")
Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
Link: https://lore.kernel.org/r/1601701330-16837-2-git-send-email-si-wei.liu@oracle.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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When the IOTLB device is enabled, the log_guest_addr that is passed by
userspace to the VHOST_SET_VRING_ADDR ioctl, and which is then written
to vq->log_addr, is a GIOVA. All writes to this address are translated
by log_user() to writes to an HVA, and then ultimately logged through
the corresponding GPAs in log_write_hva(). No logging will ever occur
with vq->log_addr in this case. It is thus wrong to pass vq->log_addr
and log_guest_addr to log_access_vq() which assumes they are actual
GPAs.
Introduce a new vq_log_used_access_ok() helper that only checks accesses
to the log for the used structure when there isn't an IOTLB device around.
Signed-off-by: Greg Kurz <groug@kaod.org>
Link: https://lore.kernel.org/r/160171933385.284610.10189082586063280867.stgit@bahia.lan
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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The open-coded computation of the used size doesn't take the event
into account when the VIRTIO_RING_F_EVENT_IDX feature is present.
Fix that by using vhost_get_used_size().
Fixes: 8ea8cf89e19a ("vhost: support event index")
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kurz <groug@kaod.org>
Link: https://lore.kernel.org/r/160171932300.284610.11846106312938909461.stgit@bahia.lan
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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When the IOTLB device is enabled, the vring addresses we get
from userspace are GIOVAs. It is thus wrong to pass them down
to access_ok() which only takes HVAs.
Access validation is done at prefetch time with IOTLB. Teach
vq_access_ok() about that by moving the (vq->iotlb) check
from vhost_vq_access_ok() to vq_access_ok(). This prevents
vhost_vring_set_addr() to fail when verifying the accesses.
No behavior change for vhost_vq_access_ok().
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1883084
Fixes: 6b1e6cc7855b ("vhost: new device IOTLB API")
Cc: jasowang@redhat.com
CC: stable@vger.kernel.org # 4.14+
Signed-off-by: Greg Kurz <groug@kaod.org>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/160171931213.284610.2052489816407219136.stgit@bahia.lan
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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The MPTCP ADD_ADDR suboption with echo-flag=1 has no HMAC, the size is
smaller than the one initially sent without echo-flag=1. We then need to
use the correct size everywhere when we need this echo bit.
Before this patch, the wrong size was reserved but the correct amount of
bytes were written (and read): the remaining bytes contained garbage.
Fixes: 6a6c05a8b016 ("mptcp: send out ADD_ADDR with echo flag")
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/95
Reported-and-tested-by: Davide Caratti <dcaratti@redhat.com>
Acked-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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There is no such property as duplex-full. It's called full-duplex. Leading to
reduced speed when using the example as base for a real device tree.
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The unit address should be 1e, because the unit address is supposed
to be in hexadecimal.
Suggested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This is a strictly cosmetic change that renames some macros in
sja1105_dynamic_config.c. They were copy-pasted in haste and this has
resulted in them having the driver prefix twice.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Replace /* no break */ comments with the new pseudo-keyword macro
fallthrough[1].
[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Replace /* Fallthrough... */ comment with the new pseudo-keyword macro
fallthrough[1].
[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Replace /* !!! fall through !!! */ comments with the new pseudo-keyword
macro fallthrough[1].
[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Replace // FALLTHROUGH comment with the new pseudo-keyword macro
fallthrough[1].
[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Guillaume Nault says:
====================
net/sched: Add actions for MPLS L2 VPNs
This patch series adds the necessary TC actions for supporting layer 2
MPLS VPNs (VPLS).
The objective is to give the possibility to add an MPLS header right
before an skb's mac header, then to prepend this MPLS packet with a
new Ethernet header with the MAC address of the next hop.
Patch 1 implements the actions for adding and removing the external
Ethernet header.
Patch 2 adds the possibility to push an MPLS header before the mac
header.
Most of the code already exists as these operations were first
implemented in openvswitch.
Practical example, with encap on Host-A and decap on Host-B:
Host-A# tc filter add dev ethAx ingress matchall \
action mpls mac_push label 20 \
action vlan push_eth dst_mac 02:00:00:00:00:02 \
src_mac 02:00:00:00:00:01 \
action mirred egress redirect dev ethAy
Host-B# tc filter add dev ethBx ingress protocol mpls_uc \
flower mpls_label 20 mpls_bos 1 \
action vlan pop_eth \
action mpls pop proto teb \
action mirred egress redirect dev ethBy
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Define the MAC_PUSH action which pushes an MPLS LSE before the mac
header (instead of between the mac and the network headers as the
plain PUSH action does).
The only special case is when the skb has an offloaded VLAN. In that
case, it has to be inlined before pushing the MPLS header.
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Implement TCA_VLAN_ACT_POP_ETH and TCA_VLAN_ACT_PUSH_ETH, to
respectively pop and push a base Ethernet header at the beginning of a
frame.
POP_ETH is just a matter of pulling ETH_HLEN bytes. VLAN tags, if any,
must be stripped before calling POP_ETH.
PUSH_ETH is restricted to skbs with no mac_header, and only the MAC
addresses can be configured. The Ethertype is automatically set from
skb->protocol. These restrictions ensure that all skb's fields remain
consistent, so that this action can't confuse other part of the
networking stack (like GSO).
Since openvswitch already had these actions, consolidate the code in
skbuff.c (like for vlan and mpls push/pop).
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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s/Typoon/Typhoon/
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Currently the comparisons of u16 integers value and sopass_val with
less than zero for error checking is always false because the values
are unsigned. Fix this by making these variables int. This does not
affect the shift and mask operations performed on these variables
Addresses-Coverity: ("Unsigned compared against zero")
Fixes: 49fc23018ec6 ("net: phy: dp83869: support Wake on LAN")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The check for old hardware versions that did not have SMCDv2 support was
using suspicious pointer magic. Address the fields using an array.
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When building a CLC proposal message then the list of ISM devices does
not need to contain multiple devices that have the same chid value,
all these devices use the same function at the end.
Improve smc_find_ism_v2_device_clnt() to collect only ISM devices that
have unique chid values.
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Vladimir Oltean says:
===================
Add Seville Ethernet switch to T1040RDB
Seville is a DSA switch that is embedded inside the T1040 SoC, and
supported by the mscc_seville DSA driver inside drivers/net/dsa/ocelot.
This series adds this switch to the SoC's dtsi files and to the T1040RDB
board file.
I would like to send this series through net-next. There is no conflict
with other patches submitted to T1040 device tree. Maybe this could at
least get an ACK from devicetree maintainers.
===================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Define the network interface names for the switch ports and hook them up
to the 2 QSGMII PHYs that are onboard.
A conscious decision was taken to go along with the numbers that are
written on the front panel of the board and not with the hardware
numbers of the switch chip ports.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Maxim Kochetkov <fido_max@inbox.ru>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add the description of the embedded L2 switch inside the SoC dtsi file
for NXP T1040.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Maxim Kochetkov <fido_max@inbox.ru>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The retransmission refactoring patch
686989700cab ("tcp: simplify tcp_mark_skb_lost")
does not properly update the total lost packet counter which may
break the policer mode in BBR. This patch fixes it.
Fixes: 686989700cab ("tcp: simplify tcp_mark_skb_lost")
Reported-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fix many (lots deleted here) build errors in hinic by selecting NET_DEVLINK.
ld: drivers/net/ethernet/huawei/hinic/hinic_hw_dev.o: in function `mgmt_watchdog_timeout_event_handler':
hinic_hw_dev.c:(.text+0x30a): undefined reference to `devlink_health_report'
ld: drivers/net/ethernet/huawei/hinic/hinic_devlink.o: in function `hinic_fw_reporter_dump':
hinic_devlink.c:(.text+0x1c): undefined reference to `devlink_fmsg_u32_pair_put'
ld: drivers/net/ethernet/huawei/hinic/hinic_devlink.o: in function `hinic_fw_reporter_dump':
hinic_devlink.c:(.text+0x126): undefined reference to `devlink_fmsg_binary_pair_put'
ld: drivers/net/ethernet/huawei/hinic/hinic_devlink.o: in function `hinic_hw_reporter_dump':
hinic_devlink.c:(.text+0x1ba): undefined reference to `devlink_fmsg_string_pair_put'
ld: hinic_devlink.c:(.text+0x227): undefined reference to `devlink_fmsg_u8_pair_put'
ld: drivers/net/ethernet/huawei/hinic/hinic_devlink.o: in function `hinic_devlink_alloc':
hinic_devlink.c:(.text+0xaee): undefined reference to `devlink_alloc'
ld: drivers/net/ethernet/huawei/hinic/hinic_devlink.o: in function `hinic_devlink_free':
hinic_devlink.c:(.text+0xb04): undefined reference to `devlink_free'
ld: drivers/net/ethernet/huawei/hinic/hinic_devlink.o: in function `hinic_devlink_register':
hinic_devlink.c:(.text+0xb26): undefined reference to `devlink_register'
ld: drivers/net/ethernet/huawei/hinic/hinic_devlink.o: in function `hinic_devlink_unregister':
hinic_devlink.c:(.text+0xb46): undefined reference to `devlink_unregister'
ld: drivers/net/ethernet/huawei/hinic/hinic_devlink.o: in function `hinic_health_reporters_create':
hinic_devlink.c:(.text+0xb75): undefined reference to `devlink_health_reporter_create'
ld: hinic_devlink.c:(.text+0xb95): undefined reference to `devlink_health_reporter_create'
ld: hinic_devlink.c:(.text+0xbac): undefined reference to `devlink_health_reporter_destroy'
ld: drivers/net/ethernet/huawei/hinic/hinic_devlink.o: in function `hinic_health_reporters_destroy':
Fixes: 51ba902a16e6 ("net-next/hinic: Initialize hw interface")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Bin Luo <luobin9@huawei.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Aviad Krawczyk <aviad.krawczyk@huawei.com>
Cc: Zhao Chen <zhaochen6@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Julian Wiedmann says:
====================
net/iucv: updates 2020-10-01
Just two (rare) patches, and both deal with smatch warnings.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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smatch complains about
net/iucv/iucv.c:1119 __iucv_message_receive() warn: inconsistent indenting
While touching this line, also make the return logic consistent and thus
get rid of a goto label.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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smatch complains about
net/iucv/af_iucv.c:624 iucv_sock_bind() error: memcpy() 'sa->siucv_user_id' too small (8 vs 9)
Which is absolutely correct - the memcpy() takes 9 bytes (sizeof(uid))
from an 8-byte field (sa->siucv_user_id).
Luckily the sockaddr_iucv struct contains more data after the
.siucv_user_id field, and we checked the size of the passed data earlier
on. So the memcpy() won't accidentally read from an invalid location.
Fix the warning by reducing the size of the uid variable to what's
actually needed, and thus reducing the amount of copied data.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Karsten Graul <kgraul@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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NETDEV_HW_ADDR_T_SLAVE is not used anymore, remove it.
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Ethtool manual stated that the tx-timer is the "the amount of time the
device should stay in idle mode prior to asserting its Tx LPI". The
previous implementation for "ethtool --set-eee tx-timer" sets the LPI TW
timer duration which is not correct. Hence, this patch fixes the
"ethtool --set-eee tx-timer" to configure the EEE LPI timer.
The LPI TW Timer will be using the defined default value instead of
"ethtool --set-eee tx-timer" which follows the EEE LS timer implementation.
Changelog V2
*Not removing/modifying the eee_timer.
*EEE LPI timer can be configured through ethtool and also the eee_timer
module param.
*EEE TW Timer will be configured with default value only, not able to be
configured through ethtool or module param. This follows the implementation
of the EEE LS Timer.
Fixes: d765955d2ae0 ("stmmac: add the Energy Efficient Ethernet support")
Signed-off-by: Vineetha G. Jaya Kumaran <vineetha.g.jaya.kumaran@intel.com>
Signed-off-by: Voon Weifeng <weifeng.voon@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Johannes Berg says:
====================
genetlink per-op policy export
Here's a respin, now including Jakub's patch last so that it will
do the right thing from the start.
The first patch remains the same, of course; the others have mostly
some rebasing going on, except for the actual export patch (patch 4)
which is adjusted per Jakub's review comments about exporting the
policy only if it's actually used for do/dump.
To see that, the dump for "nlctrl" (i.e. the generic netlink control)
is instructive, because the ops are this:
{
.cmd = CTRL_CMD_GETFAMILY,
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
.policy = ctrl_policy_family,
.maxattr = ARRAY_SIZE(ctrl_policy_family) - 1,
.doit = ctrl_getfamily,
.dumpit = ctrl_dumpfamily,
},
{
.cmd = CTRL_CMD_GETPOLICY,
.policy = ctrl_policy_policy,
.maxattr = ARRAY_SIZE(ctrl_policy_policy) - 1,
.start = ctrl_dumppolicy_start,
.dumpit = ctrl_dumppolicy,
.done = ctrl_dumppolicy_done,
},
So we exercise both "don't have doit" and "GENL_DONT_VALIDATE_DUMP"
parts, and get (with the current genl patch):
$ genl ctrl policy name nlctrl
ID: 0x10 op 3 policies: do=0
ID: 0x10 op 10 policies: dump=1
ID: 0x10 policy[0]:attr[1]: type=U16 range:[0,65535]
ID: 0x10 policy[0]:attr[2]: type=NUL_STRING max len:15
ID: 0x10 policy[1]:attr[1]: type=U16 range:[0,65535]
ID: 0x10 policy[1]:attr[2]: type=NUL_STRING max len:15
ID: 0x10 policy[1]:attr[10]: type=U32 range:[0,4294967295]
====================
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Right now CTRL_CMD_GETPOLICY can only dump the family-wide
policy. Support dumping policy of a specific op.
v3:
- rebase after per-op policy export and handle that
v2:
- make cmd U32, just in case.
v1:
- don't echo op in the output in a naive way, this should
make it cleaner to extend the output format for dumping
policies for all the commands at once in the future.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Link: https://lore.kernel.org/r/20201001225933.1373426-11-kuba@kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add support for per-op policy dumping. The data is pretty much
as before, except that now the assumption that the policy with
index 0 is "the" policy no longer holds - you now need to look
at the new CTRL_ATTR_OP_POLICY attribute which is a nested attr
(indexed by op) containing attributes for do and dump policies.
When a single op is requested, the CTRL_ATTR_OP_POLICY will be
added in the same way, since do and dump policies may differ.
v2:
- conditionally advertise per-command policies only if there
actually is a policy being used for the do/dump and it's
present at all
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We'll need this later for the per-op policy index dump.
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Rework the policy dump code a bit to support adding multiple
policies to a single dump, in order to e.g. support per-op
policies in generic netlink.
v2:
- move kernel-doc to implementation [Jakub]
- squash the first patch to not flip-flop on the prototype
[Jakub]
- merge netlink_policy_dump_get_policy_idx() with the old
get_policy_idx() we already had
- rebase without Jakub's patch to have per-op dump
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The maxtype is really an integral part of the policy, and while we
haven't gotten into a situation yet where this happens, it seems
that some developer might eventually have two places pointing to
identical policies, with different maxattr to exclude some attrs
in one of the places.
Even if not, it's really the right thing to compare both since the
two data items fundamentally belong together.
v2:
- also do the proper comparison in get_policy_idx()
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull kvm fixes from Paolo Bonzini:
"Two bugfixes"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: VMX: update PFEC_MASK/PFEC_MATCH together with PF intercept
KVM: arm64: Restore missing ISB on nVHE __tlb_switch_to_guest
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fix from Juergen Gross:
"Fix a regression introduced in 5.9-rc3 which caused a system running
as fully virtualized guest under Xen to crash when using legacy
devices like a floppy"
* tag 'for-linus-5.9b-rc8-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/events: don't use chip_data for legacy IRQs
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY fixes from Greg KH:
"Here are some small USB and PHY driver fixes for 5.9-rc8
The PHY driver fix resolves an issue found by Dan Carpenter for a
memory leak.
The USB fixes fall into two groups:
- usb gadget fix from Bryan that is a fix for a previous security fix
that showed up in in-the-wild testing
- usb core driver matching bugfixes. This fixes a bug that has
plagued the both the usbip driver and syzbot testing tools this -rc
release cycle. All is now working properly so usbip connections
will work, and syzbot can get back to fuzzing USB drivers properly.
All have been in linux-next for a while with no reported issues"
* tag 'usb-5.9-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
usbcore/driver: Accommodate usbip
usbcore/driver: Fix incorrect downcast
usbcore/driver: Fix specific driver selection
Revert "usbip: Implement a match function to fix usbip"
USB: gadget: f_ncm: Fix NDP16 datagram validation
phy: ti: am654: Fix a leak in serdes_am654_probe()
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"Some more driver fixes for i2c"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: npcm7xx: Clear LAST bit after a failed transaction.
i2c: cpm: Fix i2c_ram structure
i2c: i801: Exclude device from suspend direct complete optimization
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
"A couple more driver quirks, now enabling newer trackpoints from
Synaptics for real"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: i8042 - add nopnp quirk for Acer Aspire 5 A515
Input: trackpoint - enable Synaptics trackpoints
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One of the entries has three fields "mistake||correction||correction"
rather than the expected two fields "mistake||correction". Fix it.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: https://lkml.kernel.org/r/20200930234359.255295-1-ebiggers@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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memalloc_nocma_{save/restore} APIs can be used to skip page allocation
on CMA area, but, there is a missing case and the page on CMA area could
be allocated even if APIs are used. This patch handles this case to fix
the potential issue.
For now, these APIs are used to prevent long-term pinning on the CMA
page. When the long-term pinning is requested on the CMA page, it is
migrated to the non-CMA page before pinning. This non-CMA page is
allocated by using memalloc_nocma_{save/restore} APIs. If APIs doesn't
work as intended, the CMA page is allocated and it is pinned for a long
time. This long-term pin for the CMA page causes cma_alloc() failure
and it could result in wrong behaviour on the device driver who uses the
cma_alloc().
Missing case is an allocation from the pcplist. MIGRATE_MOVABLE pcplist
could have the pages on CMA area so we need to skip it if ALLOC_CMA
isn't specified.
Fixes: 8510e69c8efe (mm/page_alloc: fix memalloc_nocma_{save/restore} APIs)
Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: "Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Link: https://lkml.kernel.org/r/1601429472-12599-1-git-send-email-iamjoonsoo.kim@lge.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The routine that applies debug flags to the kmem_cache slabs
inadvertantly prevents non-debug flags from being applied to those
same objects. That is, if slub_debug=<flag>,<slab> is specified,
non-debugged slabs will end up having flags of zero, and the slabs
may be unusable.
Fix this by including the input flags for non-matching slabs with the
contents of slub_debug, so that the caches are created as expected
alongside any debugging options that may be requested. With this, we
can remove the check for a NULL slub_debug_string, since it's covered
by the loop itself.
Fixes: e17f1dfba37b ("mm, slub: extend slub_debug syntax for multiple blocks")
Signed-off-by: Eric Farman <farman@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Kees Cook <keescook@chromium.org>
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>
Link: https://lkml.kernel.org/r/20200930161931.28575-1-farman@linux.ibm.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-master
KVM/arm64 fixes for 5.9, take #3
- Fix synchronization of VTTBR update on TLB invalidation for nVHE systems
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