If the skb space ends in an unresolved entry while dumping we'll miss
some unresolved entries. The reason is due to zeroing the entry counter
between dumping resolved and unresolved mfc entries. We should just
keep counting until the whole table is dumped and zero when we move to
the next as we have a separate table counter.
Reported-by: Colin Ian King <colin.king@canonical.com> Fixes: 8fb472c09b9d ("ipmr: improve hash scalability") Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Gregory CLEMENT [Wed, 17 Oct 2018 15:26:35 +0000 (17:26 +0200)]
net: mscc: ocelot: Fix comment in ocelot_vlant_wait_for_completion()
The ocelot_vlant_wait_for_completion() function is very similar to the
ocelot_mact_wait_for_completion(). It seemed to have be copied but the
comment was not updated, so let's fix it.
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Xin Long [Wed, 17 Oct 2018 13:11:27 +0000 (21:11 +0800)]
sctp: fix the data size calculation in sctp_data_size
sctp data size should be calculated by subtracting data chunk header's
length from chunk_hdr->length, not just data header.
Fixes: 668c9beb9020 ("sctp: implement assign_number for sctp_stream_interleave") Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ake Koomsin [Wed, 17 Oct 2018 10:44:12 +0000 (19:44 +0900)]
virtio_net: avoid using netif_tx_disable() for serializing tx routine
Commit 713a98d90c5e ("virtio-net: serialize tx routine during reset")
introduces netif_tx_disable() after netif_device_detach() in order to
avoid use-after-free of tx queues. However, there are two issues.
1) Its operation is redundant with netif_device_detach() in case the
interface is running.
2) In case of the interface is not running before suspending and
resuming, the tx does not get resumed by netif_device_attach().
This results in losing network connectivity.
It is better to use netif_tx_lock_bh()/netif_tx_unlock_bh() instead for
serializing tx routine during reset. This also preserves the symmetry
of netif_device_detach() and netif_device_attach().
Fixes commit 713a98d90c5e ("virtio-net: serialize tx routine during reset") Signed-off-by: Ake Koomsin <ake@igel.co.jp> Acked-by: Jason Wang <jasowang@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Wed, 17 Oct 2018 09:44:04 +0000 (11:44 +0200)]
udp6: fix encap return code for resubmitting
The commit eb63f2964dbe ("udp6: add missing checks on edumux packet
processing") used the same return code convention of the ipv4 counterpart,
but ipv6 uses the opposite one: positive values means resubmit.
This change addresses the issue, using positive return value for
resubmitting. Also update the related comment, which was broken, too.
Fixes: eb63f2964dbe ("udp6: add missing checks on edumux packet processing") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel [Wed, 17 Oct 2018 08:05:45 +0000 (08:05 +0000)]
mlxsw: core: Fix use-after-free when flashing firmware during init
When the switch driver (e.g., mlxsw_spectrum) determines it needs to
flash a new firmware version it resets the ASIC after the flashing
process. The bus driver (e.g., mlxsw_pci) then registers itself again
with mlxsw_core which means (among other things) that the device
registers itself again with the hwmon subsystem again.
Since the device was registered with the hwmon subsystem using
devm_hwmon_device_register_with_groups(), then the old hwmon device
(registered before the flashing) was never unregistered and was
referencing stale data, resulting in a use-after free.
Fix by removing reliance on device managed APIs in mlxsw_hwmon_init().
Fixes: c86d62cc410c ("mlxsw: spectrum: Reset FW after flash") Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reported-by: Alexander Petrovskiy <alexpe@mellanox.com> Tested-by: Alexander Petrovskiy <alexpe@mellanox.com> Reviewed-by: Petr Machata <petrm@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Xin Long [Tue, 16 Oct 2018 19:06:12 +0000 (03:06 +0800)]
sctp: not free the new asoc when sctp_wait_for_connect returns err
When sctp_wait_for_connect is called to wait for connect ready
for sp->strm_interleave in sctp_sendmsg_to_asoc, a panic could
be triggered if cpu is scheduled out and the new asoc is freed
elsewhere, as it will return err and later the asoc gets freed
again in sctp_sendmsg.
This is a similar issue with the one fixed in Commit ca3af4dd28cf
("sctp: do not free asoc when it is already dead in sctp_sendmsg").
But this one can't be fixed by returning -ESRCH for the dead asoc
in sctp_wait_for_connect, as it will break sctp_connect's return
value to users.
This patch is to simply set err to -ESRCH before it returns to
sctp_sendmsg when any err is returned by sctp_wait_for_connect
for sp->strm_interleave, so that no asoc would be freed due to
this.
When users see this error, they will know the packet hasn't been
sent. And it also makes sense to not free asoc because waiting
connect fails, like the second call for sctp_wait_for_connect in
sctp_sendmsg_to_asoc.
Fixes: 668c9beb9020 ("sctp: implement assign_number for sctp_stream_interleave") Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
syzbot reported an use-after-free involving sctp_id2asoc. Dmitry Vyukov
helped to root cause it and it is because of reading the asoc after it
was freed:
CPU 1 CPU 2
(working on socket 1) (working on socket 2)
sctp_association_destroy
sctp_id2asoc
spin lock
grab the asoc from idr
spin unlock
spin lock
remove asoc from idr
spin unlock
free(asoc)
if asoc->base.sk != sk ... [*]
This can only be hit if trying to fetch asocs from different sockets. As
we have a single IDR for all asocs, in all SCTP sockets, their id is
unique on the system. An application can try to send stuff on an id
that matches on another socket, and the if in [*] will protect from such
usage. But it didn't consider that as that asoc may belong to another
socket, it may be freed in parallel (read: under another socket lock).
We fix it by moving the checks in [*] into the protected region. This
fixes it because the asoc cannot be freed while the lock is held.
Reported-by: syzbot+c7dd55d7aec49d48e49a@syzkaller.appspotmail.com Acked-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Heiner Kallweit [Tue, 16 Oct 2018 17:35:17 +0000 (19:35 +0200)]
r8169: re-enable MSI-X on RTL8168g
Similar to d49c88d7677b ("r8169: Enable MSI-X on RTL8106e") after e9d0ba506ea8 ("PCI: Reprogram bridge prefetch registers on resume")
we can safely assume that this also fixes the root cause of
the issue worked around by 7c53a722459c ("r8169: don't use MSI-X on
RTL8168g"). So let's revert it.
Fixes: 7c53a722459c ("r8169: don't use MSI-X on RTL8168g") Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Taehee Yoo [Tue, 16 Oct 2018 15:35:10 +0000 (00:35 +0900)]
net: bpfilter: use get_pid_task instead of pid_task
pid_task() dereferences rcu protected tasks array.
But there is no rcu_read_lock() in shutdown_umh() routine so that
rcu_read_lock() is needed.
get_pid_task() is wrapper function of pid_task. it holds rcu_read_lock()
then calls pid_task(). if task isn't NULL, it increases reference count
of task.
test commands:
%modprobe bpfilter
%modprobe -rv bpfilter
splat looks like:
[15102.030932] =============================
[15102.030957] WARNING: suspicious RCU usage
[15102.030985] 4.19.0-rc7+ #21 Not tainted
[15102.031010] -----------------------------
[15102.031038] kernel/pid.c:330 suspicious rcu_dereference_check() usage!
[15102.031063]
other info that might help us debug this:
[15102.031332]
rcu_scheduler_active = 2, debug_locks = 1
[15102.031363] 1 lock held by modprobe/1570:
[15102.031389] #0: 00000000580ef2b0 (bpfilter_lock){+.+.}, at: stop_umh+0x13/0x52 [bpfilter]
[15102.031552]
stack backtrace:
[15102.031583] CPU: 1 PID: 1570 Comm: modprobe Not tainted 4.19.0-rc7+ #21
[15102.031607] Hardware name: To be filled by O.E.M. To be filled by O.E.M./Aptio CRB, BIOS 5.6.5 07/08/2015
[15102.031628] Call Trace:
[15102.031676] dump_stack+0xc9/0x16b
[15102.031723] ? show_regs_print_info+0x5/0x5
[15102.031801] ? lockdep_rcu_suspicious+0x117/0x160
[15102.031855] pid_task+0x134/0x160
[15102.031900] ? find_vpid+0xf0/0xf0
[15102.032017] shutdown_umh.constprop.1+0x1e/0x53 [bpfilter]
[15102.032055] stop_umh+0x46/0x52 [bpfilter]
[15102.032092] __x64_sys_delete_module+0x47e/0x570
[ ... ]
Fixes: d2ba09c17a06 ("net: add skeleton of bpfilter kernel module") Signed-off-by: Taehee Yoo <ap420073@gmail.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Fix this by sanitizing pin_index before using it to index
ops->pin_config, and before passing it as an argument to
function ptp_set_pinfunc(), in which it is used to index
info->pin_config.
Notice that given that speculation windows are large, the policy is
to kill the speculation on the first load and not worry if it can be
completed with a dependent load/store [1].
Cc: stable@vger.kernel.org Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/qlogic/qla3xxx.c:384:24: warning: signed shift
result (0xF00000000) requires 37 bits to represent, but 'int' only has
32 bits [-Wshift-overflow]
((ISP_NVRAM_MASK << 16) | qdev->eeprom_cmd_data));
~~~~~~~~~~~~~~ ^ ~~
1 warning generated.
The warning is certainly accurate since ISP_NVRAM_MASK is defined as
(0x000F << 16) which is then shifted by 16, resulting in 64424509440,
well above UINT_MAX.
Given that this is the only location in this driver where ISP_NVRAM_MASK
is shifted again, it seems likely that ISP_NVRAM_MASK was originally
defined without a shift and during the move of the shift to the
definition, this statement wasn't properly removed (since ISP_NVRAM_MASK
is used in the statenent right above this). Only the maintainers can
confirm this since this statment has been here since the driver was
first added to the kernel.
Stefano Brivio [Fri, 12 Oct 2018 21:53:58 +0000 (23:53 +0200)]
geneve, vxlan: Don't check skb_dst() twice
Commit f15ca723c1eb ("net: don't call update_pmtu unconditionally") avoids
that we try updating PMTU for a non-existent destination, but didn't clean
up cases where the check was already explicit. Drop those redundant checks.
Signed-off-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Xin Long [Tue, 16 Oct 2018 07:52:02 +0000 (15:52 +0800)]
sctp: get pr_assoc and pr_stream all status with SCTP_PR_SCTP_ALL instead
According to rfc7496 section 4.3 or 4.4:
sprstat_policy: This parameter indicates for which PR-SCTP policy
the user wants the information. It is an error to use
SCTP_PR_SCTP_NONE in sprstat_policy. If SCTP_PR_SCTP_ALL is used,
the counters provided are aggregated over all supported policies.
We change to dump pr_assoc and pr_stream all status by SCTP_PR_SCTP_ALL
instead, and return error for SCTP_PR_SCTP_NONE, as it also said "It is
an error to use SCTP_PR_SCTP_NONE in sprstat_policy. "
Fixes: 826d253d57b1 ("sctp: add SCTP_PR_ASSOC_STATUS on sctp sockopt") Fixes: d229d48d183f ("sctp: add SCTP_PR_STREAM_STATUS sockopt for prsctp") Reported-by: Ying Xu <yinxu@redhat.com> Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 16 Oct 2018 06:17:25 +0000 (23:17 -0700)]
Merge branch 'nfp-fix-pedit-set-action-offloads'
Jakub Kicinski says:
====================
nfp: fix pedit set action offloads
Pieter says:
This set fixes set actions when using multiple pedit actions with
partial masks and with multiple keys per pedit action. Additionally
it fixes set ipv6 pedit action offloads when using it in combination
with other header keys.
The problem would only trigger if one combines multiple pedit actions
of the same type with partial masks, e.g.:
$ tc filter add dev netdev protocol ip parent ffff: \
flower indev netdev \
ip_proto tcp \
action pedit ex munge \
ip src set 11.11.11.11 retain 65535 munge \
ip src set 22.22.22.22 retain 4294901760 pipe \
csum ip and tcp pipe \
mirred egress redirect dev netdev
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
nfp: flower: use offsets provided by pedit instead of index for ipv6
Previously when populating the set ipv6 address action, we incorrectly
made use of pedit's key index to determine which 32bit word should be
set. We now calculate which word has been selected based on the offset
provided by the pedit action.
Fixes: 354b82bb320e ("nfp: add set ipv6 source and destination address") Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Previously we only allowed a single header key per pedit action to
change the header. This used to result in the last header key in the
pedit action to overwrite previous headers. We now keep track of them
and allow multiple header keys per pedit action.
Fixes: c0b1bd9a8b8a ("nfp: add set ipv4 header action flower offload") Fixes: 354b82bb320e ("nfp: add set ipv6 source and destination address") Fixes: f8b7b0a6b113 ("nfp: add set tcp and udp header action flower offload") Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
nfp: flower: fix pedit set actions for multiple partial masks
Previously we did not correctly change headers when using multiple
pedit actions with partial masks. We now take this into account and
no longer just commit the last pedit action.
Fixes: c0b1bd9a8b8a ("nfp: add set ipv4 header action flower offload") Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David Howells [Mon, 15 Oct 2018 21:37:21 +0000 (22:37 +0100)]
rxrpc: Fix a missing rxrpc_put_peer() in the error_report handler
Fix a missing call to rxrpc_put_peer() on the main path through the
rxrpc_error_report() function. This manifests itself as a ref leak
whenever an ICMP packet or other error comes in.
In commit f334430316e7, the hand-off of the ref to a work item was removed
and was not replaced with a put.
Fixes: f334430316e7 ("rxrpc: Fix error distribution") Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Xin Long [Mon, 15 Oct 2018 11:58:29 +0000 (19:58 +0800)]
sctp: use the pmtu from the icmp packet to update transport pathmtu
Other than asoc pmtu sync from all transports, sctp_assoc_sync_pmtu
is also processing transport pmtu_pending by icmp packets. But it's
meaningless to use sctp_dst_mtu(t->dst) as new pmtu for a transport.
The right pmtu value should come from the icmp packet, and it would
be saved into transport->mtu_info in this patch and used later when
the pmtu sync happens in sctp_sendmsg_to_asoc or sctp_packet_config.
Besides, without this patch, as pmtu can only be updated correctly
when receiving a icmp packet and no place is holding sock lock, it
will take long time if the sock is busy with sending packets.
Note that it doesn't process transport->mtu_info in .release_cb(),
as there is no enough information for pmtu update, like for which
asoc or transport. It is not worth traversing all asocs to check
pmtu_pending. So unlike tcp, sctp does this in tx path, for which
mtu_info needs to be atomic_t.
Signed-off-by: Xin Long <lucien.xin@gmail.com> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Fugang Duan [Mon, 15 Oct 2018 05:19:00 +0000 (05:19 +0000)]
net: fec: don't dump RX FIFO register when not available
Commit db65f35f50e0 ("net: fec: add support of ethtool get_regs") introduce
ethool "--register-dump" interface to dump all FEC registers.
But not all silicon implementations of the Freescale FEC hardware module
have the FRBR (FIFO Receive Bound Register) and FRSR (FIFO Receive Start
Register) register, so we should not be trying to dump them on those that
don't.
To fix it we create a quirk flag, FEC_QUIRK_HAS_RFREG, and check it before
dump those RX FIFO registers.
Signed-off-by: Fugang Duan <fugang.duan@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Sat, 13 Oct 2018 01:58:53 +0000 (18:58 -0700)]
ipv6: mcast: fix a use-after-free in inet6_mc_check
syzbot found a use-after-free in inet6_mc_check [1]
The problem here is that inet6_mc_check() uses rcu
and read_lock(&iml->sflock)
So the fact that ip6_mc_leave_src() is called under RTNL
and the socket lock does not help us, we need to acquire
iml->sflock in write mode.
In the future, we should convert all this stuff to RCU.
[1]
BUG: KASAN: use-after-free in ipv6_addr_equal include/net/ipv6.h:521 [inline]
BUG: KASAN: use-after-free in inet6_mc_check+0xae7/0xb40 net/ipv6/mcast.c:649
Read of size 8 at addr ffff8801ce7f2510 by task syz-executor0/22432
Memory state around the buggy address: ffff8801ce7f2400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8801ce7f2480: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff8801ce7f2500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^ ffff8801ce7f2580: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8801ce7f2600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Tung Nguyen [Fri, 12 Oct 2018 20:46:55 +0000 (22:46 +0200)]
tipc: fix unsafe rcu locking when accessing publication list
The binding table's 'cluster_scope' list is rcu protected to handle
races between threads changing the list and those traversing the list at
the same moment. We have now found that the function named_distribute()
uses the regular list_for_each() macro to traverse the said list.
Likewise, the function tipc_named_withdraw() is removing items from the
same list using the regular list_del() call. When these two functions
execute in parallel we see occasional crashes.
This commit fixes this by adding the missing _rcu() suffixes.
Signed-off-by: Tung Nguyen <tung.q.nguyen@dektech.com.au> Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David Howells [Fri, 12 Oct 2018 15:38:36 +0000 (16:38 +0100)]
rxrpc: Fix incorrect conditional on IPV6
The udpv6_encap_enable() function is part of the ipv6 code, and if that is
configured as a loadable module and rxrpc is built in then a build failure
will occur because the conditional check is wrong:
net/rxrpc/local_object.o: In function `rxrpc_lookup_local':
local_object.c:(.text+0x2688): undefined reference to `udpv6_encap_enable'
Use the correct config symbol (CONFIG_AF_RXRPC_IPV6) in the conditional
check rather than CONFIG_IPV6 as that will do the right thing.
Fixes: 5271953cad31 ("rxrpc: Use the UDP encap_rcv hook") Reported-by: kbuild-all@01.org Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Fri, 12 Oct 2018 14:22:47 +0000 (16:22 +0200)]
ipv6: rate-limit probes for neighbourless routes
When commit 270972554c91 ("[IPV6]: ROUTE: Add Router Reachability
Probing (RFC4191).") introduced router probing, the rt6_probe() function
required that a neighbour entry existed. This neighbour entry is used to
record the timestamp of the last probe via the ->updated field.
Later, commit 2152caea7196 ("ipv6: Do not depend on rt->n in rt6_probe().")
removed the requirement for a neighbour entry. Neighbourless routes skip
the interval check and are not rate-limited.
This patch adds rate-limiting for neighbourless routes, by recording the
timestamp of the last probe in the fib6_info itself.
Fixes: 2152caea7196 ("ipv6: Do not depend on rt->n in rt6_probe().") Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Reviewed-by: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Thu, 11 Oct 2018 22:06:33 +0000 (15:06 -0700)]
net: bcmgenet: Poll internal PHY for GENETv5
On GENETv5, there is a hardware issue which prevents the GENET hardware
from generating a link UP interrupt when the link is operating at
10Mbits/sec. Since we do not have any way to configure the link
detection logic, fallback to polling in that case.
Fixes: 421380856d9c ("net: bcmgenet: add support for the GENETv5 hardware") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
YueHaibing [Thu, 11 Oct 2018 21:32:39 +0000 (22:32 +0100)]
rxrpc: use correct kvec num when sending BUSY response packet
Fixes gcc '-Wunused-but-set-variable' warning:
net/rxrpc/output.c: In function 'rxrpc_reject_packets':
net/rxrpc/output.c:527:11: warning:
variable 'ioc' set but not used [-Wunused-but-set-variable]
'ioc' is the correct kvec num when sending a BUSY (or an ABORT) response
packet.
Fixes: ece64fec164f ("rxrpc: Emit BUSY packets when supposed to rather than ABORTs") Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David Howells [Thu, 11 Oct 2018 21:32:31 +0000 (22:32 +0100)]
rxrpc: Fix an uninitialised variable
Fix an uninitialised variable introduced by the last patch. This can cause
a crash when a new call comes in to a local service, such as when an AFS
fileserver calls back to the local cache manager.
Fixes: c1e15b4944c9 ("rxrpc: Fix the packet reception routine") Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jon Maloy [Thu, 11 Oct 2018 20:02:29 +0000 (22:02 +0200)]
tipc: initialize broadcast link stale counter correctly
In the commit referred to below we added link tolerance as an additional
criteria for declaring broadcast transmission "stale" and resetting the
unicast links to the affected node.
Unfortunately, this 'improvement' introduced two bugs, which each and
one alone cause only limited problems, but combined lead to seemingly
stochastic unicast link resets, depending on the amount of broadcast
traffic transmitted.
The first issue, a missing initialization of the 'tolerance' field of
the receiver broadcast link, was recently fixed by commit 047491ea334a
("tipc: set link tolerance correctly in broadcast link").
Ths second issue, where we omit to reset the 'stale_cnt' field of
the same link after a 'stale' period is over, leads to this counter
accumulating over time, and in the absence of the 'tolerance' criteria
leads to the above described symptoms. This commit adds the missing
initialization.
Fixes: a4dc70d46cf1 ("tipc: extend link reset criteria for stale packet retransmission") Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Cong Wang [Thu, 11 Oct 2018 18:15:13 +0000 (11:15 -0700)]
llc: set SOCK_RCU_FREE in llc_sap_add_socket()
WHen an llc sock is added into the sk_laddr_hash of an llc_sap,
it is not marked with SOCK_RCU_FREE.
This causes that the sock could be freed while it is still being
read by __llc_lookup_established() with RCU read lock. sock is
refcounted, but with RCU read lock, nothing prevents the readers
getting a zero refcnt.
Fix it by setting SOCK_RCU_FREE in llc_sap_add_socket().
Reported-by: syzbot+11e05f04c15e03be5254@syzkaller.appspotmail.com Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This pull request includes some fixes to mlx5 driver,
Please pull and let me know if there's any problem.
For -stable v4.11:
('net/mlx5: Take only bit 24-26 of wqe.pftype_wq for page fault type')
For -stable v4.17:
('net/mlx5: Fix memory leak when setting fpga ipsec caps')
For -stable v4.18:
('net/mlx5: WQ, fixes for fragmented WQ buffers API')
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Davide Caratti [Wed, 10 Oct 2018 20:00:58 +0000 (22:00 +0200)]
net/sched: cls_api: add missing validation of netlink attributes
Similarly to what has been done in 8b4c3cdd9dd8 ("net: sched: Add policy
validation for tc attributes"), fix classifier code to add validation of
TCA_CHAIN and TCA_KIND netlink attributes.
tested with:
# ./tdc.py -c filter
v2: Let sch_api and cls_api share nla_policy they have in common, thanks
to David Ahern.
v3: Avoid EXPORT_SYMBOL(), as validation of those attributes is not done
by TC modules, thanks to Cong Wang.
While at it, restore the 'Delete / get qdisc' comment to its orginal
position, just above tc_get_qdisc() function prototype.
Fixes: 5bc1701881e39 ("net: sched: introduce multichain support for filters") Signed-off-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Wenwen Wang [Mon, 8 Oct 2018 15:49:35 +0000 (10:49 -0500)]
ethtool: fix a privilege escalation bug
In dev_ethtool(), the eth command 'ethcmd' is firstly copied from the
use-space buffer 'useraddr' and checked to see whether it is
ETHTOOL_PERQUEUE. If yes, the sub-command 'sub_cmd' is further copied from
the user space. Otherwise, 'sub_cmd' is the same as 'ethcmd'. Next,
according to 'sub_cmd', a permission check is enforced through the function
ns_capable(). For example, the permission check is required if 'sub_cmd' is
ETHTOOL_SCOALESCE, but it is not necessary if 'sub_cmd' is
ETHTOOL_GCOALESCE, as suggested in the comment "Allow some commands to be
done by anyone". The following execution invokes different handlers
according to 'ethcmd'. Specifically, if 'ethcmd' is ETHTOOL_PERQUEUE,
ethtool_set_per_queue() is called. In ethtool_set_per_queue(), the kernel
object 'per_queue_opt' is copied again from the user-space buffer
'useraddr' and 'per_queue_opt.sub_command' is used to determine which
operation should be performed. Given that the buffer 'useraddr' is in the
user space, a malicious user can race to change the sub-command between the
two copies. In particular, the attacker can supply ETHTOOL_PERQUEUE and
ETHTOOL_GCOALESCE to bypass the permission check in dev_ethtool(). Then
before ethtool_set_per_queue() is called, the attacker changes
ETHTOOL_GCOALESCE to ETHTOOL_SCOALESCE. In this way, the attacker can
bypass the permission check and execute ETHTOOL_SCOALESCE.
This patch enforces a check in ethtool_set_per_queue() after the second
copy from 'useraddr'. If the sub-command is different from the one obtained
in the first copy in dev_ethtool(), an error code EINVAL will be returned.
Fixes: f38d138a7da6 ("net/ethtool: support set coalesce per queue") Signed-off-by: Wenwen Wang <wang6495@umn.edu> Reviewed-by: Michal Kubecek <mkubecek@suse.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
Wenwen Wang [Tue, 9 Oct 2018 13:15:38 +0000 (08:15 -0500)]
ethtool: fix a missing-check bug
In ethtool_get_rxnfc(), the eth command 'cmd' is compared against
'ETHTOOL_GRXFH' to see whether it is necessary to adjust the variable
'info_size'. Then the whole structure of 'info' is copied from the
user-space buffer 'useraddr' with 'info_size' bytes. In the following
execution, 'info' may be copied again from the buffer 'useraddr' depending
on the 'cmd' and the 'info.flow_type'. However, after these two copies,
there is no check between 'cmd' and 'info.cmd'. In fact, 'cmd' is also
copied from the buffer 'useraddr' in dev_ethtool(), which is the caller
function of ethtool_get_rxnfc(). Given that 'useraddr' is in the user
space, a malicious user can race to change the eth command in the buffer
between these copies. By doing so, the attacker can supply inconsistent
data and cause undefined behavior because in the following execution 'info'
will be passed to ops->get_rxnfc().
This patch adds a necessary check on 'info.cmd' and 'cmd' to confirm that
they are still same after the two copies in ethtool_get_rxnfc(). Otherwise,
an error code EINVAL will be returned.
Signed-off-by: Wenwen Wang <wang6495@umn.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
Jian-Hong Pan [Thu, 27 Sep 2018 04:09:48 +0000 (12:09 +0800)]
r8169: Enable MSI-X on RTL8106e
Originally, we have an issue where r8169 MSI-X interrupt is broken after
S3 suspend/resume on RTL8106e of ASUS X441UAR.
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd.
RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller [10ec:8136]
(rev 07)
Subsystem: ASUSTeK Computer Inc. RTL810xE PCI Express Fast
Ethernet controller [1043:200f]
Flags: bus master, fast devsel, latency 0, IRQ 16
I/O ports at e000 [size=256]
Memory at ef100000 (64-bit, non-prefetchable) [size=4K]
Memory at e0000000 (64-bit, prefetchable) [size=16K]
Capabilities: [40] Power Management version 3
Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Endpoint, MSI 01
Capabilities: [b0] MSI-X: Enable+ Count=4 Masked-
Capabilities: [d0] Vital Product Data
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Virtual Channel
Capabilities: [160] Device Serial Number 01-00-00-00-36-4c-e0-00
Capabilities: [170] Latency Tolerance Reporting
Kernel driver in use: r8169
Kernel modules: r8169
We found the all of the values in PCI BAR=4 of the ethernet adapter
become 0xFF after system resumes. That breaks the MSI-X interrupt.
Therefore, we can only fall back to MSI interrupt to fix the issue at
that time.
However, there is a commit which resolves the drivers getting nothing in
PCI BAR=4 after system resumes. It is 04cb3ae895d7 "PCI: Reprogram
bridge prefetch registers on resume" by Daniel Drake.
After apply the patch, the ethernet adapter works fine before suspend
and after resume. So, we can revert the workaround after the commit
"PCI: Reprogram bridge prefetch registers on resume" is merged into main
tree.
Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=201181 Fixes: 7bb05b85bc2d ("r8169: don't use MSI-X on RTL8106e") Signed-off-by: Jian-Hong Pan <jian-hong@endlessm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
The following pull-request contains BPF updates for your *net* tree.
The main changes are:
1) Fix xsk map update and delete operation to not call synchronize_net()
but to piggy back on SOCK_RCU_FREE for sockets instead as we are not
allowed to sleep under RCU, from Björn.
2) Do not change RLIMIT_MEMLOCK in reuseport_bpf selftest if the process
already has unlimited RLIMIT_MEMLOCK, from Eric.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Merge tag 'armsoc-fixes-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Arnd writes:
"ARM: SoC fixes for 4.19
Two last minute bugfixes, both for NXP platforms:
* The Layerscape 'qbman' infrastructure suffers from probe ordering
bugs in some configurations, a two-patch series adds a hotfix for
this. 4.20 will have a longer set of patches to rework it.
* The old imx53-qsb board regressed in 4.19 after the addition
of cpufreq support, adding a set of explicit operating points
fixes this."
* tag 'armsoc-fixes-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
soc: fsl: qman_portals: defer probe after qman's probe
soc: fsl: qbman: add APIs to retrieve the probing status
ARM: dts: imx53-qsb: disable 1.2GHz OPP
David Howells [Fri, 12 Oct 2018 13:00:57 +0000 (14:00 +0100)]
afs: Fix afs_server struct leak
Fix a leak of afs_server structs. The routine that installs them in the
various lookup lists and trees gets a ref on leaving the function, whether
it added the server or a server already exists. It shouldn't increment
the refcount if it added the server.
The effect of this that "rmmod kafs" will hang waiting for the leaked
server to become unused.
Fixes: d2ddc776a458 ("afs: Overhaul volume and server record caching and fileserver rotation") Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Merge tag 'mmc-v4.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Ulf writes:
"MMC core:
- Avoid fragile multiblock reads for the last sector in SPI mode
WIFI/SDIO:
- libertas: Fixup suspend sequence for the SDIO card"
* tag 'mmc-v4.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
libertas: call into generic suspend code before turning off power
mmc: block: avoid multiblock reads for the last sector in SPI mode
Merge tag 'for-gkh' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Doug writes:
"RDMA fixes:
Final for-rc pull request for 4.19
We only have one bug to submit this time around. It fixes a DMA
unmap issue where we unmapped the DMA address from the IOMMU before
we did from the card, resulting in a DMAR error with IOMMU enabled,
or possible crash without."
* tag 'for-gkh' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
IB/mlx5: Unmap DMA addr from HCA before IOMMU
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Dmitry writes:
"Input updates for v4.19-rc7
- we added a few scheduling points into various input interfaces to
ensure that large writes will not cause RCU stalls
- fixed configuring PS/2 keyboards as wakeup devices on newer
platforms
- added a new Xbox gamepad ID."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: uinput - add a schedule point in uinput_inject_events()
Input: evdev - add a schedule point in evdev_write()
Input: mousedev - add a schedule point in mousedev_write()
Input: i8042 - enable keyboard wakeups by default when s2idle is used
Input: xpad - add support for Xbox1 PDP Camo series gamepad
Merge tag 'next-fixes-20181012' of git://git.kernel.org/pub/scm/linux/kernel/git/sfr/next-fixes
Stephen writes:
"A couple of warning fixes:
Two fixes from Peter Oberparleiter <oberpar@linux.ibm.com>:
Commit 6b7dca401cb1 ("tracing: Allow gcov profiling on only ftrace subsystem")
uncovered linker problems when using gcov kernel profiling on some
architectures. These problems were likely introduced earlier, and are
possibly related to compiler changes."
* tag 'next-fixes-20181012' of git://git.kernel.org/pub/scm/linux/kernel/git/sfr/next-fixes:
vmlinux.lds.h: Fix linker warnings about orphan .LPBX sections
vmlinux.lds.h: Fix incomplete .text.exit discards
Arnd Bergmann [Thu, 11 Oct 2018 11:06:17 +0000 (13:06 +0200)]
lib/bch: fix possible stack overrun
The previous patch introduced very large kernel stack usage and a Makefile
change to hide the warning about it.
From what I can tell, a number of things went wrong here:
- The BCH_MAX_T constant was set to the maximum value for 'n',
not the maximum for 't', which is much smaller.
- The stack usage is actually larger than the entire kernel stack
on some architectures that can use 4KB stacks (m68k, sh, c6x), which
leads to an immediate overrun.
- The justification in the patch description claimed that nothing
changed, however that is not the case even without the two points above:
the configuration is machine specific, and most boards never use the
maximum BCH_ECC_WORDS() length but instead have something much smaller.
That maximum would only apply to machines that use both the maximum
block size and the maximum ECC strength.
The largest value for 't' that I could find is '32', which in turn leads
to a 60 byte array instead of 2048 bytes. Making it '64' for future
extension seems also worthwhile, with 120 bytes for the array. Anything
larger won't fit into the OOB area on NAND flash.
With that changed, the warning can be enabled again.
Only linux-4.19+ contains the breakage, so this is only needed
as a stable backport if it does not make it into the release.
3) Fix refcounting in u32 classificer, from Al Viro.
4) Userspace netlink ABI fixes from Eugene Syromiatnikov.
5) Don't double iounmap on rmmod in ena driver, from Arthur
Kiyanovski.
6) Fix devlink string attribute handling, we must pull a copy into a
kernel buffer if the lifetime extends past the netlink request.
From Moshe Shemesh.
7) Fix hangs in RDS, from Ka-Cheong Poon.
8) Fix recursive locking lockdep warnings in tipc, from Ying Xue.
9) Clear RX irq correctly in socionext, from Ilias Apalodimas.
10) bcm_sf2 fixes from Florian Fainelli."
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (38 commits)
net: dsa: bcm_sf2: Call setup during switch resume
net: dsa: bcm_sf2: Fix unbind ordering
net: phy: sfp: remove sfp_mutex's definition
r8169: set RX_MULTI_EN bit in RxConfig for 8168F-family chips
net: socionext: clear rx irq correctly
net/mlx4_core: Fix warnings during boot on driverinit param set failures
tipc: eliminate possible recursive locking detected by LOCKDEP
selftests: udpgso_bench.sh explicitly requires bash
selftests: rtnetlink.sh explicitly requires bash.
qmi_wwan: Added support for Gemalto's Cinterion ALASxx WWAN interface
tipc: queue socket protocol error messages into socket receive buffer
tipc: set link tolerance correctly in broadcast link
net: ipv4: don't let PMTU updates increase route MTU
net: ipv4: update fnhe_pmtu when first hop's MTU changes
net/ipv6: stop leaking percpu memory in fib6 info
rds: RDS (tcp) hangs on sendto() to unresponding address
net: make skb_partial_csum_set() more robust against overflows
devlink: Add helper function for safely copy string param
devlink: Fix param cmode driverinit for string type
devlink: Fix param set handling for string type
...
David S. Miller [Thu, 11 Oct 2018 22:20:00 +0000 (15:20 -0700)]
Merge branch 'net-dsa-bcm_sf2-Couple-of-fixes'
Florian Fainelli says:
====================
net: dsa: bcm_sf2: Couple of fixes
Here are two fixes for the bcm_sf2 driver that were found during
testing unbind and analysing another issue during system
suspend/resume.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
net: dsa: bcm_sf2: Call setup during switch resume
There is no reason to open code what the switch setup function does, in
fact, because we just issued a switch reset, we would make all the
register get their default values, including for instance, having unused
port be enabled again and wasting power and leading to an inappropriate
switch core clock being selected.
Fixes: 8cfa94984c9c ("net: dsa: bcm_sf2: add suspend/resume callbacks") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
The order in which we release resources is unfortunately leading to bus
errors while dismantling the port. This is because we set
priv->wol_ports_mask to 0 to tell bcm_sf2_sw_suspend() that it is now
permissible to clock gate the switch. Later on, when dsa_slave_destroy()
comes in from dsa_unregister_switch() and calls
dsa_switch_ops::port_disable, we perform the same dismantling again, and
this time we hit registers that are clock gated.
Make sure that dsa_unregister_switch() is the first thing that happens,
which takes care of releasing all user visible resources, then proceed
with clock gating hardware. We still need to set priv->wol_ports_mask to
0 to make sure that an enabled port properly gets disabled in case it
was previously used as part of Wake-on-LAN.
Fixes: d9338023fb8e ("net: dsa: bcm_sf2: Make it a real platform device driver") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
vmlinux.lds.h: Fix linker warnings about orphan .LPBX sections
Enabling both CONFIG_LD_DEAD_CODE_DATA_ELIMINATION=y and
CONFIG_GCOV_PROFILE_ALL=y results in linker warnings:
warning: orphan section `.data..LPBX1' being placed in
section `.data..LPBX1'.
LD_DEAD_CODE_DATA_ELIMINATION adds compiler flag -fdata-sections. This
option causes GCC to create separate data sections for data objects,
including those generated by GCC internally for gcov profiling. The
names of these objects start with a dot (.LPBX0, .LPBX1), resulting in
section names starting with 'data..'.
As section names starting with 'data..' are used for specific purposes
in the Linux kernel, the linker script does not automatically include
them in the output data section, resulting in the "orphan section"
linker warnings.
Fix this by specifically including sections named "data..LPBX*" in the
data section.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Tested-by: Stephen Rothwell <sfr@canb.auug.org.au> Tested-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Enabling CONFIG_GCOV_PROFILE_ALL=y causes linker errors on ARM:
`.text.exit' referenced in section `.ARM.exidx.text.exit':
defined in discarded section `.text.exit'
`.text.exit' referenced in section `.fini_array.00100':
defined in discarded section `.text.exit'
And related errors on NDS32:
`.text.exit' referenced in section `.dtors.65435':
defined in discarded section `.text.exit'
The gcov compiler flags cause certain compiler versions to generate
additional destructor-related sections that are not yet handled by the
linker script, resulting in references between discarded and
non-discarded sections.
Since destructors are not used in the Linux kernel, fix this by
discarding these additional sections.
Reported-by: Arnd Bergmann <arnd@arndb.de> Tested-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Reported-by: Greentime Hu <green.hu@gmail.com> Tested-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
The sfp_mutex variable is defined but never used in this file. Not even
in the commit that introduced that variable.
Remove sfp_mutex, it has no purpose.
Cc: Andrew Lunn <andrew@lunn.ch> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
r8169: set RX_MULTI_EN bit in RxConfig for 8168F-family chips
It has been reported that since
commit 05212ba8132b42 ("r8169: set RxConfig after tx/rx is enabled for RTL8169sb/8110sb devices")
at least RTL_GIGA_MAC_VER_38 NICs work erratically after a resume from
suspend.
The problem has been traced to a missing RX_MULTI_EN bit in the RxConfig
register.
We already set this bit for RTL_GIGA_MAC_VER_35 NICs of the same 8168F
chip family so let's do it also for its other siblings: RTL_GIGA_MAC_VER_36
and RTL_GIGA_MAC_VER_38.
Curiously, the NIC seems to work fine after a system boot without having
this bit set as long as the system isn't suspended and resumed.
Fixes: 05212ba8132b42 ("r8169: set RxConfig after tx/rx is enabled for RTL8169sb/8110sb devices") Reported-by: Chris Clayton <chris2553@googlemail.com> Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name> Reviewed-by: Heiner Kallweit <hkallweit1@gmail.com> Tested-by: Chris Clayton <chris2553@googlemail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Ilias Apalodimas [Thu, 11 Oct 2018 12:28:26 +0000 (15:28 +0300)]
net: socionext: clear rx irq correctly
commit 63ae7949e94a ("net: socionext: Use descriptor info instead of MMIO reads on Rx")
removed constant mmio reads from the driver and started using a descriptor
field to check if packet should be processed.
This lead the napi rx handler being constantly called while no packets
needed processing and ksoftirq getting 100% cpu usage. Issue one mmio read
to clear the irq correcty after processing packets
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> Reported-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Moshe Shemesh [Thu, 11 Oct 2018 12:01:19 +0000 (15:01 +0300)]
net/mlx4_core: Fix warnings during boot on driverinit param set failures
During boot, mlx4_core sets the driverinit configuration parameters and
updates the devlink module on the initial values calling
devlink_param_driverinit_value_set().
If devlink_param_driverinit_value_set() returns an error mlx4_core
reports kernel module warning.
This caused false alarm during boot in case kernel was compiled with
CONFIG_NET_DEVLINK off.
Fix by removing warning reported in case
devlink_param_driverinit_value_set() fails.
This actually makes the function mlx4_devlink_set_init_value()
redundant to using directly devlink_param_driverinit_value_set() and so
removed.
It fixes the following kernel trace:
mlx4_core 0000:00:06.0: devlink set parameter 0 value failed (err = -95)
mlx4_core 0000:00:06.0: devlink set parameter 1 value failed (err = -95)
mlx4_core 0000:00:06.0: devlink set parameter 4 value failed (err = -95)
mlx4_core 0000:00:06.0: devlink set parameter 5 value failed (err = -95)
mlx4_core 0000:00:06.0: devlink set parameter 3 value failed (err = -95)
Fixes: bd1b51dc66df ("mlx4: Add mlx4 initial parameters table and register it") Signed-off-by: Moshe Shemesh <moshe@mellanox.com> Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Merge branch 'for-4.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Tejun writes:
"cgroup fixes for v4.19-rc7
One cgroup2 threaded mode fix for v4.19-rc7. While threaded mode
isn't used widely (yet) and the bug requires somewhat convoluted
sequence of operations, it causes a userland visible malfunction -
EINVAL on a valid attempt to enable threaded mode. This pull request
contains the fix"
* 'for-4.19-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup: Fix dom_cgrp propagation when enabling threaded mode
The reason why the noise above was complained by LOCKDEP is because we
nested to hold l->wakeupq.lock and l->inputq->lock in tipc_link_reset
function. In fact it's unnecessary to move skb buffer from l->wakeupq
queue to l->inputq queue while holding the two locks at the same time.
Instead, we can move skb buffers in l->wakeupq queue to a temporary
list first and then move the buffers of the temporary list to l->inputq
queue, which is also safe for us.
Fixes: 3f32d0be6c16 ("tipc: lock wakeup & inputq at tipc_link_reset()") Reported-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Ying Xue <ying.xue@windriver.com> Acked-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Merge tag 'kbuild-fixes-v4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Masahiro writes:
"Kbuild fixes for v4.19 (2nd)
- Fix warnings from recordmcount.pl when building with Clang
- Allow Clang to use GNU toolchains correctly
- Disable CONFIG_SAMPLES for UML to avoid build error"
* tag 'kbuild-fixes-v4.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
samples: disable CONFIG_SAMPLES for UML
kbuild: allow to use GCC toolchain not in Clang search path
ftrace: Build with CPPFLAGS to get -Qunused-arguments
====================
net: explicitly requires bash when needed.
Some test scripts require bash-only features but use the default shell.
This may cause random failures if the default shell is not bash.
Instead of doing a potentially complex rewrite of such scripts, these patches
require the bash interpreter, where needed.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The udpgso_bench.sh script requires several bash-only features. This
may cause random failures if the default shell is not bash.
Address the above explicitly requiring bash as the script interpreter
Fixes: 3a687bef148d ("selftests: udp gso benchmark") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Acked-by: Willem de Bruijn <willemb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Paolo Abeni [Thu, 11 Oct 2018 08:54:52 +0000 (10:54 +0200)]
selftests: rtnetlink.sh explicitly requires bash.
the script rtnetlink.sh requires a bash-only features (sleep with sub-second
precision). This may cause random test failure if the default shell is not
bash.
Address the above explicitly requiring bash as the script interpreter.
Fixes: 33b01b7b4f19 ("selftests: add rtnetlink test script") Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Merge tag 'alloc-args-v4.19-rc8' of https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Kees writes:
"Fix open-coded multiplication arguments to allocators
- Fixes several new open-coded multiplications added in the 4.19
merge window."
* tag 'alloc-args-v4.19-rc8' of https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
treewide: Replace more open-coded allocation size multiplications
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Ingo, a man of few words, writes:
"perf fixes:
misc perf tooling fixes"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf record: Use unmapped IP for inline callchain cursors
perf python: Use -Wno-redundant-decls to build with PYTHON=python3
perf report: Don't try to map ip to invalid map
perf script python: Fix export-to-sqlite.py sample columns
perf script python: Fix export-to-postgresql.py occasional failure
Björn Töpel [Mon, 8 Oct 2018 17:40:16 +0000 (19:40 +0200)]
xsk: do not call synchronize_net() under RCU read lock
The XSKMAP update and delete functions called synchronize_net(), which
can sleep. It is not allowed to sleep during an RCU read section.
Instead we need to make sure that the sock sk_destruct (xsk_destruct)
function is asynchronously called after an RCU grace period. Setting
the SOCK_RCU_FREE flag for XDP sockets takes care of this.
Fixes: fbfc504a24f5 ("bpf: introduce new bpf AF_XDP map type BPF_MAP_TYPE_XSKMAP") Reported-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: Björn Töpel <bjorn.topel@intel.com> Acked-by: Song Liu <songliubraving@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
tipc: queue socket protocol error messages into socket receive buffer
In tipc_sk_filter_rcv(), when we detect protocol messages with error we
call tipc_sk_conn_proto_rcv() and let it reset the connection and notify
the socket by calling sk->sk_state_change().
However, tipc_sk_filter_rcv() may have been called from the function
tipc_backlog_rcv(), in which case the socket lock is held and the socket
already awake. This means that the sk_state_change() call is ignored and
the error notification lost. Now the receive queue will remain empty and
the socket sleeps forever.
In this commit, we convert the protocol message into a connection abort
message and enqueue it into the socket's receive queue. By this addition
to the above state change we cover all conditions.
Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: Parthasarathy Bhuvaragan <parthasarathy.bhuvaragan@ericsson.com> Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Jon Maloy [Wed, 10 Oct 2018 15:34:01 +0000 (17:34 +0200)]
tipc: set link tolerance correctly in broadcast link
In the patch referred to below we added link tolerance as an additional
criteria for declaring broadcast transmission "stale" and resetting the
affected links.
However, the 'tolerance' field of the broadcast link is never set, and
remains at zero. This renders the whole commit without the intended
improving effect, but luckily also with no negative effect.
In this commit we add the missing initialization.
Fixes: a4dc70d46cf1 ("tipc: extend link reset criteria for stale packet retransmission") Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
====================
net: ipv4: fixes for PMTU when link MTU changes
The first patch adapts the changes that commit e9fa1495d738 ("ipv6:
Reflect MTU changes on PMTU of exceptions for MTU-less routes") did in
IPv6 to IPv4: lower PMTU when the first hop's MTU drops below it, and
raise PMTU when the first hop was limiting PMTU discovery and its MTU
is increased.
The second patch fixes bugs introduced in commit d52e5a7e7ca4 ("ipv4:
lock mtu in fnhe when received PMTU < net.ipv4.route.min_pmtu") that
only appear once the first patch is applied.
Selftests for these cases were introduced in net-next commit e44e428f59e4 ("selftests: pmtu: add basic IPv4 and IPv6 PMTU tests")
v2: add cover letter, and fix a few small things in patch 1
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Tue, 9 Oct 2018 15:48:15 +0000 (17:48 +0200)]
net: ipv4: don't let PMTU updates increase route MTU
When an MTU update with PMTU smaller than net.ipv4.route.min_pmtu is
received, we must clamp its value. However, we can receive a PMTU
exception with PMTU < old_mtu < ip_rt_min_pmtu, which would lead to an
increase in PMTU.
To fix this, take the smallest of the old MTU and ip_rt_min_pmtu.
Before this patch, in case of an update, the exception's MTU would
always change. Now, an exception can have only its lock flag updated,
but not the MTU, so we need to add a check on locking to the following
"is this exception getting updated, or close to expiring?" test.
Fixes: d52e5a7e7ca4 ("ipv4: lock mtu in fnhe when received PMTU < net.ipv4.route.min_pmtu") Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Reviewed-by: Stefano Brivio <sbrivio@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Sabrina Dubroca [Tue, 9 Oct 2018 15:48:14 +0000 (17:48 +0200)]
net: ipv4: update fnhe_pmtu when first hop's MTU changes
Since commit 5aad1de5ea2c ("ipv4: use separate genid for next hop
exceptions"), exceptions get deprecated separately from cached
routes. In particular, administrative changes don't clear PMTU anymore.
As Stefano described in commit e9fa1495d738 ("ipv6: Reflect MTU changes
on PMTU of exceptions for MTU-less routes"), the PMTU discovered before
the local MTU change can become stale:
- if the local MTU is now lower than the PMTU, that PMTU is now
incorrect
- if the local MTU was the lowest value in the path, and is increased,
we might discover a higher PMTU
Similarly to what commit e9fa1495d738 did for IPv6, update PMTU in those
cases.
If the exception was locked, the discovered PMTU was smaller than the
minimal accepted PMTU. In that case, if the new local MTU is smaller
than the current PMTU, let PMTU discovery figure out if locking of the
exception is still needed.
To do this, we need to know the old link MTU in the NETDEV_CHANGEMTU
notifier. By the time the notifier is called, dev->mtu has been
changed. This patch adds the old MTU as additional information in the
notifier structure, and a new call_netdevice_notifiers_u32() function.
Fixes: 5aad1de5ea2c ("ipv4: use separate genid for next hop exceptions") Signed-off-by: Sabrina Dubroca <sd@queasysnail.net> Reviewed-by: Stefano Brivio <sbrivio@redhat.com> Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Mike Rapoport [Tue, 9 Oct 2018 04:02:01 +0000 (07:02 +0300)]
net/ipv6: stop leaking percpu memory in fib6 info
The fib6_info_alloc() function allocates percpu memory to hold per CPU
pointers to rt6_info, but this memory is never freed. Fix it.
Fixes: a64efe142f5e ("net/ipv6: introduce fib6_info struct and helpers") Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com> Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Here are a set of patches that prepares for and fix problems in rxrpc's
package reception code. There serious problems are:
(A) There's a window between binding the socket and setting the data_ready
hook in which packets can find their way into the UDP socket's receive
queues.
(B) The skb_recv_udp() will return an error (and clear the error state) if
there was an error on the Tx side. rxrpc doesn't handle this.
(C) The rxrpc data_ready handler doesn't fully drain the UDP receive
queue.
(D) The rxrpc data_ready handler assumes it is called in a non-reentrant
state.
The second patch fixes (A) - (C); the third patch renders (B) and (C)
non-issues by using the recap_rcv hook instead of data_ready - and the
final patch fixes (D). That last is the most complex.
The preparatory patches are:
(1) Fix some places that are doing things in the wrong net namespace.
(2) Stop taking the rcu read lock as it's held by the IP input routine in
the call chain.
(3) Only end the Tx phase if *we* rotated the final packet out of the Tx
buffer.
(4) Don't assume that the call state won't change after dropping the
call_state lock.
(5) Only take receive window and MTU suze parameters from an ACK packet if
it's the latest ACK packet.
(6) Record connection-level abort information correctly.
(7) Fix a trace line.
And then there are three main patches - note that these are mixed in with
the preparatory patches somewhat:
(1) Fix the setup window (A), skb_recv_udp() error check (B) and packet
drainage (C).
(2) Switch to using the encap_rcv instead of data_ready to cut out the
effects of the UDP read queues and get the packets delivered directly.
(3) Add more locking into the various packet input paths to defend against
re-entrance (D).
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Ka-Cheong Poon [Mon, 8 Oct 2018 16:17:11 +0000 (09:17 -0700)]
rds: RDS (tcp) hangs on sendto() to unresponding address
In rds_send_mprds_hash(), if the calculated hash value is non-zero and
the MPRDS connections are not yet up, it will wait. But it should not
wait if the send is non-blocking. In this case, it should just use the
base c_path for sending the message.
Signed-off-by: Ka-Cheong Poon <ka-cheong.poon@oracle.com> Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Merge tag 'xfs-fixes-for-4.19-rc7' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Dave writes:
"xfs: fixes for 4.19-rc7
Update for 4.19-rc7 to fix numerous file clone and deduplication issues."
* tag 'xfs-fixes-for-4.19-rc7' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: fix data corruption w/ unaligned reflink ranges
xfs: fix data corruption w/ unaligned dedupe ranges
xfs: update ctime and remove suid before cloning files
xfs: zero posteof blocks when cloning above eof
xfs: refactor clonerange preparation into a separate helper
The dm-linear target is independent of the dm-zoned target. For code
requiring support for zoned block devices, use CONFIG_BLK_DEV_ZONED
instead of CONFIG_DM_ZONED.
While at it, similarly to dm linear, also enable the DM_TARGET_ZONED_HM
feature in dm-flakey only if CONFIG_BLK_DEV_ZONED is defined.
Fixes: beb9caac211c1 ("dm linear: eliminate linear_end_io call if CONFIG_DM_ZONED disabled") Fixes: 0be12c1c7fce7 ("dm linear: add support for zoned block devices") Cc: stable@vger.kernel.org Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Tariq Toukan [Tue, 21 Aug 2018 11:41:41 +0000 (14:41 +0300)]
net/mlx5: WQ, fixes for fragmented WQ buffers API
mlx5e netdevice used to calculate fragment edges by a call to
mlx5_wq_cyc_get_frag_size(). This calculation did not give the correct
indication for queues smaller than a PAGE_SIZE, (broken by default on
PowerPC, where PAGE_SIZE == 64KB). Here it is replaced by the correct new
calls/API.
Since (TX/RX) Work Queues buffers are fragmented, here we introduce
changes to the API in core driver, so that it gets a stride index and
returns the index of last stride on same fragment, and an additional
wrapping function that returns the number of physically contiguous
strides that can be written contiguously to the work queue.
This obsoletes the following API functions, and their buggy
usage in EN driver:
* mlx5_wq_cyc_get_frag_size()
* mlx5_wq_cyc_ctr2fragix()
The new API improves modularity and hides the details of such
calculation for mlx5e netdevice and mlx5_ib rdma drivers.
New calculation is also more efficient, and improves performance
as follows:
Packet rate test: pktgen, UDP / IPv4, 64byte, single ring, 8K ring size.
Before: 16,477,619 pps
After: 17,085,793 pps
3.7% improvement
Fixes: 3a2f70331226 ("net/mlx5: Use order-0 allocations for all WQ types") Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Reviewed-by: Eran Ben Elisha <eranbe@mellanox.com> Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Merge tag 'for-4.19/dm-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Mike writes:
"device mapper fixes for 4.19 final
- Fix a DM cache module init error path bug that doesn't properly
cleanup a KMEM_CACHE if target registration fails.
- Two stable@ fixes for DM zoned target; 4.20 will have changes that
eliminate this code entirely but <= 4.19 needs these changes."
* tag 'for-4.19/dm-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm linear: eliminate linear_end_io call if CONFIG_DM_ZONED disabled
dm: fix report zone remapping to account for partition offset
dm cache: destroy migration_cache if cache target registration failed
Merge tag 'trace-v4.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Steven writes:
"vsprint fix:
It was reported that trace_printk() was not reporting properly
values that came after a dereference pointer.
trace_printk() utilizes vbin_printf() and bstr_printf() to keep the
overhead of tracing down. vbin_printf() does not do any conversions
and just stors the string format and the raw arguments into the
buffer. bstr_printf() is used to read the buffer and does the
conversions to complete the printf() output.
This can be troublesome with dereferenced pointers because the
reference may be different from the time vbin_printf() is called to
the time bstr_printf() is called. To fix this, a prior commit changed
vbin_printf() to convert dereferenced pointers into strings and load
the converted string into the buffer. But the change to bstr_printf()
had an off-by-one error and didn't account for the nul character at
the end of the string and this corrupted the rest of the values in
the format that came after a dereferenced pointer."
* tag 'trace-v4.19-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
vsprintf: Fix off-by-one bug in bstr_printf() processing dereferenced pointers
Merge tag 'devicetree-fixes-for-4.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Rob writes:
"Devicetree fixes for 4.19, part 3:
- Fix DT unittest on Oldworld MAC systems"
* tag 'devicetree-fixes-for-4.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
of: unittest: Disable interrupt node tests for old world MAC systems
Valentine Fatiev [Wed, 10 Oct 2018 06:56:25 +0000 (09:56 +0300)]
IB/mlx5: Unmap DMA addr from HCA before IOMMU
The function that puts back the MR in cache also removes the DMA address
from the HCA. Therefore we need to call this function before we remove
the DMA mapping from MMU. Otherwise the HCA may access a memory that
is no longer DMA mapped.
Root cause is the following check in skb_partial_csum_set()
if (unlikely(start > skb_headlen(skb)) ||
unlikely((int)start + off > skb_headlen(skb) - 2))
return false;
If skb_headlen(skb) is 1, then (skb_headlen(skb) - 2) becomes 0xffffffff
and the check fails to detect that ((int)start + off) is off the limit,
since the compare is unsigned.
When we fix that, then the first condition (start > skb_headlen(skb))
becomes obsolete.
Then we should also check that (skb_headroom(skb) + start) wont
overflow 16bit field.
Fixes: 5ff8dda3035d ("net: Ensure partial checksum offset is inside the skb head") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 10 Oct 2018 17:19:10 +0000 (10:19 -0700)]
Merge branch 'devlink-param-type-string-fixes'
Moshe Shemesh says:
====================
devlink param type string fixes
This patchset fixes devlink param infrastructure for string param type.
The devlink param infrastructure doesn't handle copying the string data
correctly. The first two patches fix it and the third patch adds helper
function to safely copy string value without exceeding
DEVLINK_PARAM_MAX_STRING_VALUE.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Moshe Shemesh [Wed, 10 Oct 2018 13:09:27 +0000 (16:09 +0300)]
devlink: Add helper function for safely copy string param
Devlink string param buffer is allocated at the size of
DEVLINK_PARAM_MAX_STRING_VALUE. Add helper function which makes sure
this size is not exceeded.
Renamed DEVLINK_PARAM_MAX_STRING_VALUE to
__DEVLINK_PARAM_MAX_STRING_VALUE to emphasize that it should be used by
devlink only. The driver should use the helper function instead to
verify it doesn't exceed the allowed length.
Signed-off-by: Moshe Shemesh <moshe@mellanox.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Moshe Shemesh [Wed, 10 Oct 2018 13:09:26 +0000 (16:09 +0300)]
devlink: Fix param cmode driverinit for string type
Driverinit configuration mode value is held by devlink to enable the
driver fetch the value after reload command. In case the param type is
string devlink should copy the value from driver string buffer to
devlink string buffer on devlink_param_driverinit_value_set() and
vice-versa on devlink_param_driverinit_value_get().
Fixes: ec01aeb1803e ("devlink: Add support for get/set driverinit value") Signed-off-by: Moshe Shemesh <moshe@mellanox.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
projects / mirror_ubuntu-eoan-kernel.git / log