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Currently, ovs_ct_set_labels() is only called for confirmed conntrack
entries (ct) within ovs_ct_commit(). However, if the conntrack entry
does not have the labels_ext extension, attempting to allocate it in
ovs_ct_get_conn_labels() for a confirmed entry triggers a warning in
nf_ct_ext_add():
WARN_ON(nf_ct_is_confirmed(ct));
This happens when the conntrack entry is created externally before OVS
increments net->ct.labels_used. The issue has become more likely since
commit fcb1aa5163b1 ("openvswitch: switch to per-action label counting
in conntrack"), which changed to use per-action label counting and
increment net->ct.labels_used when a flow with ct action is added.
Since there’s no straightforward way to fully resolve this issue at the
moment, this reverts the commit to avoid breaking existing use cases.
Fixes: fcb1aa5163b1 ("openvswitch: switch to per-action label counting in conntrack")
Reported-by: Jianbo Liu <jianbol@nvidia.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Aaron Conole <aconole@redhat.com>
Link: https://patch.msgid.link/1bdeb2f3a812bca016a225d3de714427b2cd4772.1741457143.git.lucien.xin@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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The actions length check is unreliable and produces different results
depending on the initial length of the provided netlink attribute and
the composition of the actual actions inside of it. For example, a
user can add 4088 empty clone() actions without triggering -EMSGSIZE,
on attempt to add 4089 such actions the operation will fail with the
-EMSGSIZE verdict. However, if another 16 KB of other actions will
be *appended* to the previous 4089 clone() actions, the check passes
and the flow is successfully installed into the openvswitch datapath.
The reason for a such a weird behavior is the way memory is allocated.
When ovs_flow_cmd_new() is invoked, it calls ovs_nla_copy_actions(),
that in turn calls nla_alloc_flow_actions() with either the actual
length of the user-provided actions or the MAX_ACTIONS_BUFSIZE. The
function adds the size of the sw_flow_actions structure and then the
actually allocated memory is rounded up to the closest power of two.
So, if the user-provided actions are larger than MAX_ACTIONS_BUFSIZE,
then MAX_ACTIONS_BUFSIZE + sizeof(*sfa) rounded up is 32K + 24 -> 64K.
Later, while copying individual actions, we look at ksize(), which is
64K, so this way the MAX_ACTIONS_BUFSIZE check is not actually
triggered and the user can easily allocate almost 64 KB of actions.
However, when the initial size is less than MAX_ACTIONS_BUFSIZE, but
the actions contain ones that require size increase while copying
(such as clone() or sample()), then the limit check will be performed
during the reserve_sfa_size() and the user will not be allowed to
create actions that yield more than 32 KB internally.
This is one part of the problem. The other part is that it's not
actually possible for the userspace application to know beforehand
if the particular set of actions will be rejected or not.
Certain actions require more space in the internal representation,
e.g. an empty clone() takes 4 bytes in the action list passed in by
the user, but it takes 12 bytes in the internal representation due
to an extra nested attribute, and some actions require less space in
the internal representations, e.g. set(tunnel(..)) normally takes
64+ bytes in the action list provided by the user, but only needs to
store a single pointer in the internal implementation, since all the
data is stored in the tunnel_info structure instead.
And the action size limit is applied to the internal representation,
not to the action list passed by the user. So, it's not possible for
the userpsace application to predict if the certain combination of
actions will be rejected or not, because it is not possible for it to
calculate how much space these actions will take in the internal
representation without knowing kernel internals.
All that is causing random failures in ovs-vswitchd in userspace and
inability to handle certain traffic patterns as a result. For example,
it is reported that adding a bit more than a 1100 VMs in an OpenStack
setup breaks the network due to OVS not being able to handle ARP
traffic anymore in some cases (it tries to install a proper datapath
flow, but the kernel rejects it with -EMSGSIZE, even though the action
list isn't actually that large.)
Kernel behavior must be consistent and predictable in order for the
userspace application to use it in a reasonable way. ovs-vswitchd has
a mechanism to re-direct parts of the traffic and partially handle it
in userspace if the required action list is oversized, but that doesn't
work properly if we can't actually tell if the action list is oversized
or not.
Solution for this is to check the size of the user-provided actions
instead of the internal representation. This commit just removes the
check from the internal part because there is already an implicit size
check imposed by the netlink protocol. The attribute can't be larger
than 64 KB. Realistically, we could reduce the limit to 32 KB, but
we'll be risking to break some existing setups that rely on the fact
that it's possible to create nearly 64 KB action lists today.
Vast majority of flows in real setups are below 100-ish bytes. So
removal of the limit will not change real memory consumption on the
system. The absolutely worst case scenario is if someone adds a flow
with 64 KB of empty clone() actions. That will yield a 192 KB in the
internal representation consuming 256 KB block of memory. However,
that list of actions is not meaningful and also a no-op. Real world
very large action lists (that can occur for a rare cases of BUM
traffic handling) are unlikely to contain a large number of clones and
will likely have a lot of tunnel attributes making the internal
representation comparable in size to the original action list.
So, it should be fine to just remove the limit.
Commit in the 'Fixes' tag is the first one that introduced the
difference between internal representation and the user-provided action
lists, but there were many more afterwards that lead to the situation
we have today.
Fixes: 7d5437c709de ("openvswitch: Add tunneling interface.")
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Reviewed-by: Aaron Conole <aconole@redhat.com>
Link: https://patch.msgid.link/20250308004609.2881861-1-i.maximets@ovn.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Guillaume Nault says:
====================
gre: Fix regressions in IPv6 link-local address generation.
IPv6 link-local address generation has some special cases for GRE
devices. This has led to several regressions in the past, and some of
them are still not fixed. This series fixes the remaining problems,
like the ipv6.conf.<dev>.addr_gen_mode sysctl being ignored and the
router discovery process not being started (see details in patch 1).
To avoid any further regressions, patch 2 adds selftests covering
IPv4 and IPv6 gre/gretap devices with all combinations of currently
supported addr_gen_mode values.
====================
Link: https://patch.msgid.link/cover.1741375285.git.gnault@redhat.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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GRE devices have their special code for IPv6 link-local address
generation that has been the source of several regressions in the past.
Add selftest to check that all gre, ip6gre, gretap and ip6gretap get an
IPv6 link-link local address in accordance with the
net.ipv6.conf.<dev>.addr_gen_mode sysctl.
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Tested-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Link: https://patch.msgid.link/2d6772af8e1da9016b2180ec3f8d9ee99f470c77.1741375285.git.gnault@redhat.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Use addrconf_addr_gen() to generate IPv6 link-local addresses on GRE
devices in most cases and fall back to using add_v4_addrs() only in
case the GRE configuration is incompatible with addrconf_addr_gen().
GRE used to use addrconf_addr_gen() until commit e5dd729460ca
("ip/ip6_gre: use the same logic as SIT interfaces when computing v6LL
address") restricted this use to gretap and ip6gretap devices, and
created add_v4_addrs() (borrowed from SIT) for non-Ethernet GRE ones.
The original problem came when commit 9af28511be10 ("addrconf: refuse
isatap eui64 for INADDR_ANY") made __ipv6_isatap_ifid() fail when its
addr parameter was 0. The commit says that this would create an invalid
address, however, I couldn't find any RFC saying that the generated
interface identifier would be wrong. Anyway, since gre over IPv4
devices pass their local tunnel address to __ipv6_isatap_ifid(), that
commit broke their IPv6 link-local address generation when the local
address was unspecified.
Then commit e5dd729460ca ("ip/ip6_gre: use the same logic as SIT
interfaces when computing v6LL address") tried to fix that case by
defining add_v4_addrs() and calling it to generate the IPv6 link-local
address instead of using addrconf_addr_gen() (apart for gretap and
ip6gretap devices, which would still use the regular
addrconf_addr_gen(), since they have a MAC address).
That broke several use cases because add_v4_addrs() isn't properly
integrated into the rest of IPv6 Neighbor Discovery code. Several of
these shortcomings have been fixed over time, but add_v4_addrs()
remains broken on several aspects. In particular, it doesn't send any
Router Sollicitations, so the SLAAC process doesn't start until the
interface receives a Router Advertisement. Also, add_v4_addrs() mostly
ignores the address generation mode of the interface
(/proc/sys/net/ipv6/conf/*/addr_gen_mode), thus breaking the
IN6_ADDR_GEN_MODE_RANDOM and IN6_ADDR_GEN_MODE_STABLE_PRIVACY cases.
Fix the situation by using add_v4_addrs() only in the specific scenario
where the normal method would fail. That is, for interfaces that have
all of the following characteristics:
* run over IPv4,
* transport IP packets directly, not Ethernet (that is, not gretap
interfaces),
* tunnel endpoint is INADDR_ANY (that is, 0),
* device address generation mode is EUI64.
In all other cases, revert back to the regular addrconf_addr_gen().
Also, remove the special case for ip6gre interfaces in add_v4_addrs(),
since ip6gre devices now always use addrconf_addr_gen() instead.
Fixes: e5dd729460ca ("ip/ip6_gre: use the same logic as SIT interfaces when computing v6LL address")
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/559c32ce5c9976b269e6337ac9abb6a96abe5096.1741375285.git.gnault@redhat.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Add unit tests for the PRP duplicate detection
Signed-off-by: Jaakko Karrenpalo <jkarrenpalo@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250307161700.1045-2-jkarrenpalo@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Add PRP specific function for handling duplicate
packets. This is needed because of potential
L2 802.1p prioritization done by network switches.
The L2 prioritization can re-order the PRP packets
from a node causing the existing implementation to
discard the frame(s) that have been received 'late'
because the sequence number is before the previous
received packet. This can happen if the node is
sending multiple frames back-to-back with different
priority.
Signed-off-by: Jaakko Karrenpalo <jkarrenpalo@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250307161700.1045-1-jkarrenpalo@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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There is an incorrect calculation in the offset variable which causes
the nft_skb_copy_to_reg() function to always return -EFAULT. Adding the
start variable is redundant. In the __ip_options_compile() function the
correct offset is specified when finding the function. There is no need
to add the size of the iphdr structure to the offset.
Fixes: dbb5281a1f84 ("netfilter: nf_tables: add support for matching IPv4 options")
Signed-off-by: Alexey Kashavkin <akashavkin@gmail.com>
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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This patch fixes a few typos, spelling mistakes, and a bit of grammar,
increasing the comments readability.
Signed-off-by: Janik Haag <janik@aq0.de>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250307145648.1679912-2-janik@aq0.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Use string choices helper for better readability.
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Jijie Shao <shaojijie@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250307113733.819448-1-shaojijie@huawei.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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With the blamed commit it seems that lan966x doesn't seem to boot
anymore when the internal CPU is used.
The reason seems to be the usage of the devm_of_iomap, if we replace
this with devm_ioremap, this seems to fix the issue as we use the same
region also for other devices.
Fixes: 0426a920d6269c ("reset: mchp: sparx5: Map cpu-syscon locally in case of LAN966x")
Reviewed-by: Herve Codina <herve.codina@bootlin.com>
Tested-by: Herve Codina <herve.codina@bootlin.com>
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://lore.kernel.org/r/20250227105502.25125-1-horatiu.vultur@microchip.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
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We use a notifier to implement the mechanism of informing the user-space
about changes in GPIO line status. We register with the notifier when
the GPIO character device file is opened and unregister when the last
reference to the associated file descriptor is dropped.
Since commit fcc8b637c542 ("gpiolib: switch the line state notifier to
atomic") we use the atomic notifier variant. Atomic notifiers call
rcu_synchronize in atomic_notifier_chain_unregister() which caused a
significant performance regression in some circumstances, observed by
user-space when calling close() on the GPIO device file descriptor.
Replace the atomic notifier with the raw variant and provide
synchronization with a read-write spinlock.
Fixes: fcc8b637c542 ("gpiolib: switch the line state notifier to atomic")
Reported-by: David Jander <david@protonic.nl>
Closes: https://lore.kernel.org/all/20250311110034.53959031@erd003.prtnl/
Tested-by: David Jander <david@protonic.nl>
Tested-by: Kent Gibson <warthog618@gmail.com>
Link: https://lore.kernel.org/r/20250311-gpiolib-line-state-raw-notifier-v2-1-138374581e1e@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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During chip registration we should neither check the return value of
gc->get_direction() nor hold the SRCU lock when calling it. The former
is because pin controllers may have pins set to alternate functions and
return errors from their get_direction() callbacks. That's alright - we
should default to the safe INPUT state and not bail-out. The latter is
not needed because we haven't registered the chip yet so there's nothing
to protect against dynamic removal. In fact: we currently hit a lockdep
splat. Revert to calling the gc->get_direction() callback directly and
*not* checking its value.
Fixes: 9d846b1aebbe ("gpiolib: check the return value of gpio_chip::get_direction()")
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Closes: https://lore.kernel.org/all/81f890fc-6688-42f0-9756-567efc8bb97a@samsung.com/
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20250226-retval-fixes-v2-1-c8dc57182441@linaro.org
Tested-by: Gene C <arch@sapience.com>
Link: https://lore.kernel.org/r/20250311175631.83779-1-brgl@bgdev.pl
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v6.14
The bulk of this is driver specific fixes, mostly unremarkable. There's
also one core fix from Charles, fixing up confusion around the limiting
of maximum control values.
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext
Pull sched_ext fix from Tejun Heo:
"BPF schedulers could trigger a crash by passing in an invalid CPU to
the scx_bpf_select_cpu_dfl() helper.
Fix it by verifying input validity"
* tag 'sched_ext-for-6.14-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/sched_ext:
sched_ext: Validate prev_cpu in scx_bpf_select_cpu_dfl()
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A couple of driver specific fixes, an error handling fix for the Atmel
QuadSPI driver and a fix for a nasty synchronisation issue in the data
path for the Microchip driver which affects larger transfers.
There's also a MAINTAINERS update for the Samsung driver"
* tag 'spi-fix-v6.14-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: microchip-core: prevent RX overflows when transmit size > FIFO size
MAINTAINERS: add tambarus as R for Samsung SPI
spi: atmel-quadspi: remove references to runtime PM on error path
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Don't error out on large MTU if XDP is multi-buf.
The ping test now tests ping with XDP and high MTU.
netdevsim doesn't actually run the prog (yet?) so
it doesn't matter if the prog was multi-buf..
Reviewed-by: Michal Kubiak <michal.kubiak@intel.com>
Link: https://patch.msgid.link/20250311092820.542148-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Stanislav Fomichev says:
====================
net: remove rtnl_lock from the callers of queue APIs
All drivers that use queue management APIs already depend on the netdev
lock. Ultimately, we want to have most of the paths that work with
specific netdev to be rtnl_lock-free (ethtool mostly in particular).
Queue API currently has a much smaller API surface, so start with
rtnl_lock from it:
- add mutex to each dmabuf binding (to replace rtnl_lock)
- move netdev lock management to the callers of netdev_rx_queue_restart
and drop rtnl_lock
====================
Link: https://patch.msgid.link/20250311144026.4154277-1-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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All drivers that use queue API are already converted to use
netdev instance lock. Move netdev instance lock management to
the netlink layer and drop rtnl_lock.
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Reviewed-by: Mina Almasry. <almasrymina@google.com>
Link: https://patch.msgid.link/20250311144026.4154277-4-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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As we move away from rtnl_lock for queue ops, introduce
per-netdev_nl_sock lock.
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Reviewed-by: Mina Almasry <almasrymina@google.com>
Link: https://patch.msgid.link/20250311144026.4154277-3-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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No functional changes. Next patches will add more granular locking
to netdev_nl_sock.
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Reviewed-by: Mina Almasry <almasrymina@google.com>
Link: https://patch.msgid.link/20250311144026.4154277-2-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Although it does not seem to have any untoward side-effects,
the use of ';' to separate to assignments seems more appropriate than ','.
Flagged by clang-19 -Wcomma
No functional change intended.
Compile tested only.
Signed-off-by: Simon Horman <horms@kernel.org>
Reviewed-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20250307-mlx5-comma-v1-1-934deb6927bb@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Commit 51bef03e1a71 ("selftests/net: deflake GRO tests") recently
switched to NAPI suspension, and lowered the timeout from 1ms to 100us.
This started causing flakes in netdev-run CI. Let's bump it to 200us.
In a quick test of a debug kernel I see failures with 100us, with 200us
in 5 runs I see 2 completely clean runs and 3 with a single retry
(GRO test will retry up to 5 times).
Reviewed-by: Kevin Krakauer <krakauer@google.com>
Link: https://patch.msgid.link/20250310110821.385621-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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bnxt_dl_reload_up is completely missing instance lock management
which can result in `devlink dev reload` leaving with instance
lock held. Add the missing calls.
Also add netdev_assert_locked to make it clear that the up() method
is running with the instance lock grabbed.
v2:
- add net/netdev_lock.h include to bnxt_devlink.c for netdev_assert_locked
Fixes: 004b5008016a ("eth: bnxt: remove most dependencies on RTNL")
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250309215851.2003708-3-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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netdev_lock_ops conditionally grabs instance lock when queue_mgmt_ops
is defined. However queue_mgmt_ops support is signaled via FW
so we can sometimes boot without queue_mgmt_ops being set.
This will result in bnxt running without instance lock which
the driver now heavily depends on. Set request_ops_lock to true
unconditionally to always request netdev instance lock.
Fixes: 004b5008016a ("eth: bnxt: remove most dependencies on RTNL")
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250309215851.2003708-2-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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All (error) paths that call dev_close are already holding instance lock,
so switch to netif_close to avoid the deadlock.
v2:
- add missing EXPORT_MODULE for netif_close
Fixes: 004b5008016a ("eth: bnxt: remove most dependencies on RTNL")
Reported-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20250309215851.2003708-1-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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There is a couple of places from which we can arrive to ndo_setup_tc
with TC_SETUP_BLOCK/TC_SETUP_FT:
- netlink
- netlink notifier
- netdev notifier
Locking netdev too deep in this call chain seems to be problematic
(especially assuming some/all of the call_netdevice_notifiers
NETDEV_UNREGISTER) might soon be running with the instance lock).
Revert to lockless ndo_setup_tc for TC_SETUP_BLOCK/TC_SETUP_FT. NFT
framework already takes care of most of the locking. Document
the assumptions.
ndo_setup_tc TC_SETUP_BLOCK
nft_block_offload_cmd
nft_chain_offload_cmd
nft_flow_block_chain
nft_flow_offload_chain
nft_flow_rule_offload_abort
nft_flow_rule_offload_commit
nft_flow_rule_offload_commit
nf_tables_commit
nfnetlink_rcv_batch
nfnetlink_rcv_skb_batch
nfnetlink_rcv
nft_offload_netdev_event
NETDEV_UNREGISTER notifier
ndo_setup_tc TC_SETUP_FT
nf_flow_table_offload_cmd
nf_flow_table_offload_setup
nft_unregister_flowtable_hook
nft_register_flowtable_net_hooks
nft_flowtable_update
nf_tables_newflowtable
nfnetlink_rcv_batch (.call NFNL_CB_BATCH)
nft_flowtable_update
nf_tables_newflowtable
nft_flowtable_event
nf_tables_flowtable_event
NETDEV_UNREGISTER notifier
__nft_unregister_flowtable_net_hooks
nft_unregister_flowtable_net_hooks
nf_tables_commit
nfnetlink_rcv_batch (.call NFNL_CB_BATCH)
__nf_tables_abort
nf_tables_abort
nfnetlink_rcv_batch
__nft_release_hook
__nft_release_hooks
nf_tables_pre_exit_net -> module unload
nft_rcv_nl_event
netlink_register_notifier (oh boy)
nft_register_flowtable_net_hooks
nft_flowtable_update
nf_tables_newflowtable
nf_tables_newflowtable
Fixes: c4f0f30b424e ("net: hold netdev instance lock during nft ndo_setup_tc")
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Reported-by: syzbot+0afb4bcf91e5a1afdcad@syzkaller.appspotmail.com
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250308044726.1193222-1-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Cong Wang says:
====================
net_sched: Prevent creation of classes with TC_H_ROOT
This patchset contains a bug fix and its TDC test case.
====================
Link: https://patch.msgid.link/20250306232355.93864-1-xiyou.wangcong@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Integrate the reproduer from Mingi to TDC.
All test results:
1..4
ok 1 0385 - Create DRR with default setting
ok 2 2375 - Delete DRR with handle
ok 3 3092 - Show DRR class
ok 4 4009 - Reject creation of DRR class with classid TC_H_ROOT
Cc: Mingi Cho <mincho@theori.io>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250306232355.93864-3-xiyou.wangcong@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The function qdisc_tree_reduce_backlog() uses TC_H_ROOT as a termination
condition when traversing up the qdisc tree to update parent backlog
counters. However, if a class is created with classid TC_H_ROOT, the
traversal terminates prematurely at this class instead of reaching the
actual root qdisc, causing parent statistics to be incorrectly maintained.
In case of DRR, this could lead to a crash as reported by Mingi Cho.
Prevent the creation of any Qdisc class with classid TC_H_ROOT
(0xFFFFFFFF) across all qdisc types, as suggested by Jamal.
Reported-by: Mingi Cho <mincho@theori.io>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Fixes: 066a3b5b2346 ("[NET_SCHED] sch_api: fix qdisc_tree_decrease_qlen() loop")
Link: https://patch.msgid.link/20250306232355.93864-2-xiyou.wangcong@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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PRT BOs may not have any backing store, so bo->tbo.resource will be
NULL. Check for that before dereferencing.
Fixes: 0cce5f285d9a ("drm/amdkfd: Check correct memory types for is_system variable")
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Natalie Vock <natalie.vock@gmx.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 3e3fcd29b505cebed659311337ea03b7698767fc)
Cc: stable@vger.kernel.org # 6.12.x
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[Why]
If reset is detected and kfd need to evict working queues, HWS moving queue will be failed.
Then remaining queues are not evicted and in active state.
After reset done, kfd uses HWS to termination remaining activated queues but HWS is resetted.
So remove queue will be failed again.
[How]
Keep removing all queues even if HWS returns failed.
It will not affect cpsch as it checks reset_domain->sem.
v2: If any queue failed, evict queue returns error.
v3: Declare err inside the if-block.
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Yifan Zha <Yifan.Zha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 42c854b8fb0cce512534aa2b7141948e80c6ebb0)
Cc: stable@vger.kernel.org
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There is no difference between the sge of READ and non-READ
operations in hns RoCE. Set max_sge_rd to the same value as
max_send_sge.
Fixes: 9a4435375cd1 ("IB/hns: Add driver files for hns RoCE driver")
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://patch.msgid.link/20250311084857.3803665-8-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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Add xa_destroy() for xarray in driver.
Fixes: 5c1f167af112 ("RDMA/hns: Init SRQ table for hip08")
Fixes: 27e19f451089 ("RDMA/hns: Convert cq_table to XArray")
Fixes: 736b5a70db98 ("RDMA/hns: Convert qp_table_tree to XArray")
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://patch.msgid.link/20250311084857.3803665-7-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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When ib_copy_to_udata() fails in hns_roce_create_qp_common(),
hns_roce_qp_remove() should be called in the error path to
clean up resources in hns_roce_qp_store().
Fixes: 0f00571f9433 ("RDMA/hns: Use new SQ doorbell register for HIP09")
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://patch.msgid.link/20250311084857.3803665-6-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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SQ params from userspace are checked in by set_user_sq_size(). But
when the check fails, the function doesn't return but instead keep
running and overwrite 'ret'. As a result, the invalid params will
not get blocked actually.
Add a return right after the failed check. Besides, although the
check result of kernel sq params will not be overwritten, to keep
coding style unified, move default_congest_type() before
set_kernel_sq_size().
Fixes: 6ec429d5887a ("RDMA/hns: Support userspace configuring congestion control algorithm with QP granularity")
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://patch.msgid.link/20250311084857.3803665-5-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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Currently the condition of unmapping sdb in error path is not exactly
the same as the condition of mapping in alloc_user_qp_db(). This may
cause a problem of unmapping an unmapped db in some case, such as
when the QP is XRC TGT. Unified the two conditions.
Fixes: 90ae0b57e4a5 ("RDMA/hns: Combine enable flags of qp")
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://patch.msgid.link/20250311084857.3803665-4-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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Driver runs a for-loop when allocating bt pages and mapping them with
buffer pages. When a large buffer (e.g. MR over 100GB) is being allocated,
it may require a considerable loop count. This will lead to soft lockup:
watchdog: BUG: soft lockup - CPU#27 stuck for 22s!
...
Call trace:
hem_list_alloc_mid_bt+0x124/0x394 [hns_roce_hw_v2]
hns_roce_hem_list_request+0xf8/0x160 [hns_roce_hw_v2]
hns_roce_mtr_create+0x2e4/0x360 [hns_roce_hw_v2]
alloc_mr_pbl+0xd4/0x17c [hns_roce_hw_v2]
hns_roce_reg_user_mr+0xf8/0x190 [hns_roce_hw_v2]
ib_uverbs_reg_mr+0x118/0x290
watchdog: BUG: soft lockup - CPU#35 stuck for 23s!
...
Call trace:
hns_roce_hem_list_find_mtt+0x7c/0xb0 [hns_roce_hw_v2]
mtr_map_bufs+0xc4/0x204 [hns_roce_hw_v2]
hns_roce_mtr_create+0x31c/0x3c4 [hns_roce_hw_v2]
alloc_mr_pbl+0xb0/0x160 [hns_roce_hw_v2]
hns_roce_reg_user_mr+0x108/0x1c0 [hns_roce_hw_v2]
ib_uverbs_reg_mr+0x120/0x2bc
Add a cond_resched() to fix soft lockup during these loops. In order not
to affect the allocation performance of normal-size buffer, set the loop
count of a 100GB MR as the threshold to call cond_resched().
Fixes: 38389eaa4db1 ("RDMA/hns: Add mtr support for mixed multihop addressing")
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://patch.msgid.link/20250311084857.3803665-3-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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Pre-content hooks in page faults introduces potential deadlock of HSM
handler in userspace with filesystem freezing.
The requirement with pre-content event is that for every accessed file
range an event covering at least this range will be generated at least
once before the file data is accesses.
In preparation to disabling pre-content event hooks on page faults,
add pre-content hooks at mmap() variants for the entire mmaped range,
so HSM can fill content when user requests to map a portion of the file.
Note that exec() variant also calls vm_mmap_pgoff() internally to map
code sections, so pre-content hooks are also generated in this case.
Link: https://lore.kernel.org/linux-fsdevel/7ehxrhbvehlrjwvrduoxsao5k3x4aw275patsb3krkwuq573yv@o2hskrfawbnc/
Suggested-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20250312073852.2123409-2-amir73il@gmail.com
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The Altera USB Blaster 3, available as both a cable and an on-board
solution, is primarily used for programming and debugging FPGAs.
It interfaces with host software such as Quartus Programmer,
System Console, SignalTap, and Nios Debugger. The device utilizes
either an FT2232 or FT4232 chip.
Enabling the support for various configurations of the on-board
USB Blaster 3 by including the appropriate VID/PID pairs,
allowing it to function as a serial device via ftdi_sio.
Note that this check-in does not include support for the
cable solution, as it does not support UART functionality.
The supported configurations are determined by the
hardware design and include:
1) PID 0x6022, FT2232, 1 JTAG port (Port A) + Port B as UART
2) PID 0x6025, FT4232, 1 JTAG port (Port A) + Port C as UART
3) PID 0x6026, FT4232, 1 JTAG port (Port A) + Port C, D as UART
4) PID 0x6029, FT4232, 1 JTAG port (Port B) + Port C as UART
5) PID 0x602a, FT4232, 1 JTAG port (Port B) + Port C, D as UART
6) PID 0x602c, FT4232, 1 JTAG port (Port A) + Port B as UART
7) PID 0x602d, FT4232, 1 JTAG port (Port A) + Port B, C as UART
8) PID 0x602e, FT4232, 1 JTAG port (Port A) + Port B, C, D as UART
These configurations allow for flexibility in how the USB Blaster 3 is
used, depending on the specific needs of the hardware design.
Signed-off-by: Boon Khai Ng <boon.khai.ng@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Johan Hovold <johan@kernel.org>
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The custom suspend function causes a build warning when CONFIG_PM_SLEEP
is disabled:
sound/soc/codecs/cs42l43.c:2405:12: error: unused function 'cs42l43_codec_runtime_force_suspend' [-Werror,-Wunused-function]
Change SET_SYSTEM_SLEEP_PM_OPS() to the newer SYSTEM_SLEEP_PM_OPS(),
to avoid this.
Fixes: 164b7dd4546b ("ASoC: cs42l43: Add jack delay debounce after suspend")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Maciej Strozek <mstrozek@opensource.cirrus.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/20250305172738.3437513-1-arnd@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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Commit c780d01cf1a6 ("media: vb2: vb2_core_queue_init(): sanity check lock
and wait_prepare/finish") added a sanity check to ensure that if there are
no wait_prepare/finish callbacks set by the driver, then the vb2_queue lock
must be set, since otherwise the vb2 core cannot do correct locking.
The rtl2832_sdr.c triggered this warning: it turns out that while the
driver does set this lock, it sets it too late. So move it up to before
the vb2_queue_init() call.
Reported-by: Arthur Marsh <arthur.marsh@internode.on.net>
Closes: https://lore.kernel.org/linux-media/20241211042355.8479-1-user@am64/
Fixes: 8fcd2795d22a ("media: rtl2832_sdr: drop vb2_ops_wait_prepare/finish")
Cc: stable@vger.kernel.org
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
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Add a fixup to enable the mute LED on HP Pavilion x360 Convertible
14-dy1xxx with ALC295 codec. The appropriate coefficient index and bits
were identified through a brute-force method, as detailed in
https://bbs.archlinux.org/viewtopic.php?pid=2079504#p2079504.
Signed-off-by: Navon John Lukose <navonjohnlukose@gmail.com>
Link: https://patch.msgid.link/20250307213319.35507-1-navonjohnlukose@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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The get->num_services variable is an unsigned int which is controlled by
the user. The struct_size() function ensures that the size calculation
does not overflow an unsigned long, however, we are saving the result to
an int so the calculation can overflow.
Both "len" and "get->num_services" come from the user. This check is
just a sanity check to help the user and ensure they are using the API
correctly. An integer overflow here is not a big deal. This has no
security impact.
Save the result from struct_size() type size_t to fix this integer
overflow bug.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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These scripts fail if the kernel is tainted which leads to wrong test
failure reports in CI environments when an unrelated test triggers some
splat.
Check taint state at start of script and SKIP if its already dodgy.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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insert_tree()
Since commit b36e4523d4d5 ("netfilter: nf_conncount: fix garbage
collection confirm race"), `cpu` and `jiffies32` were introduced to
the struct nf_conncount_tuple.
The commit made nf_conncount_add() initialize `conn->cpu` and
`conn->jiffies32` when allocating the struct.
In contrast, count_tree() was not changed to initialize them.
By commit 34848d5c896e ("netfilter: nf_conncount: Split insert and
traversal"), count_tree() was split and the relevant allocation
code now resides in insert_tree().
Initialize `conn->cpu` and `conn->jiffies32` in insert_tree().
BUG: KMSAN: uninit-value in find_or_evict net/netfilter/nf_conncount.c:117 [inline]
BUG: KMSAN: uninit-value in __nf_conncount_add+0xd9c/0x2850 net/netfilter/nf_conncount.c:143
find_or_evict net/netfilter/nf_conncount.c:117 [inline]
__nf_conncount_add+0xd9c/0x2850 net/netfilter/nf_conncount.c:143
count_tree net/netfilter/nf_conncount.c:438 [inline]
nf_conncount_count+0x82f/0x1e80 net/netfilter/nf_conncount.c:521
connlimit_mt+0x7f6/0xbd0 net/netfilter/xt_connlimit.c:72
__nft_match_eval net/netfilter/nft_compat.c:403 [inline]
nft_match_eval+0x1a5/0x300 net/netfilter/nft_compat.c:433
expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]
nft_do_chain+0x426/0x2290 net/netfilter/nf_tables_core.c:288
nft_do_chain_ipv4+0x1a5/0x230 net/netfilter/nft_chain_filter.c:23
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xf4/0x400 net/netfilter/core.c:626
nf_hook_slow_list+0x24d/0x860 net/netfilter/core.c:663
NF_HOOK_LIST include/linux/netfilter.h:350 [inline]
ip_sublist_rcv+0x17b7/0x17f0 net/ipv4/ip_input.c:633
ip_list_rcv+0x9ef/0xa40 net/ipv4/ip_input.c:669
__netif_receive_skb_list_ptype net/core/dev.c:5936 [inline]
__netif_receive_skb_list_core+0x15c5/0x1670 net/core/dev.c:5983
__netif_receive_skb_list net/core/dev.c:6035 [inline]
netif_receive_skb_list_internal+0x1085/0x1700 net/core/dev.c:6126
netif_receive_skb_list+0x5a/0x460 net/core/dev.c:6178
xdp_recv_frames net/bpf/test_run.c:280 [inline]
xdp_test_run_batch net/bpf/test_run.c:361 [inline]
bpf_test_run_xdp_live+0x2e86/0x3480 net/bpf/test_run.c:390
bpf_prog_test_run_xdp+0xf1d/0x1ae0 net/bpf/test_run.c:1316
bpf_prog_test_run+0x5e5/0xa30 kernel/bpf/syscall.c:4407
__sys_bpf+0x6aa/0xd90 kernel/bpf/syscall.c:5813
__do_sys_bpf kernel/bpf/syscall.c:5902 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5900 [inline]
__ia32_sys_bpf+0xa0/0xe0 kernel/bpf/syscall.c:5900
ia32_sys_call+0x394d/0x4180 arch/x86/include/generated/asm/syscalls_32.h:358
do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
__do_fast_syscall_32+0xb0/0x110 arch/x86/entry/common.c:387
do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:412
do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:450
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
Uninit was created at:
slab_post_alloc_hook mm/slub.c:4121 [inline]
slab_alloc_node mm/slub.c:4164 [inline]
kmem_cache_alloc_noprof+0x915/0xe10 mm/slub.c:4171
insert_tree net/netfilter/nf_conncount.c:372 [inline]
count_tree net/netfilter/nf_conncount.c:450 [inline]
nf_conncount_count+0x1415/0x1e80 net/netfilter/nf_conncount.c:521
connlimit_mt+0x7f6/0xbd0 net/netfilter/xt_connlimit.c:72
__nft_match_eval net/netfilter/nft_compat.c:403 [inline]
nft_match_eval+0x1a5/0x300 net/netfilter/nft_compat.c:433
expr_call_ops_eval net/netfilter/nf_tables_core.c:240 [inline]
nft_do_chain+0x426/0x2290 net/netfilter/nf_tables_core.c:288
nft_do_chain_ipv4+0x1a5/0x230 net/netfilter/nft_chain_filter.c:23
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xf4/0x400 net/netfilter/core.c:626
nf_hook_slow_list+0x24d/0x860 net/netfilter/core.c:663
NF_HOOK_LIST include/linux/netfilter.h:350 [inline]
ip_sublist_rcv+0x17b7/0x17f0 net/ipv4/ip_input.c:633
ip_list_rcv+0x9ef/0xa40 net/ipv4/ip_input.c:669
__netif_receive_skb_list_ptype net/core/dev.c:5936 [inline]
__netif_receive_skb_list_core+0x15c5/0x1670 net/core/dev.c:5983
__netif_receive_skb_list net/core/dev.c:6035 [inline]
netif_receive_skb_list_internal+0x1085/0x1700 net/core/dev.c:6126
netif_receive_skb_list+0x5a/0x460 net/core/dev.c:6178
xdp_recv_frames net/bpf/test_run.c:280 [inline]
xdp_test_run_batch net/bpf/test_run.c:361 [inline]
bpf_test_run_xdp_live+0x2e86/0x3480 net/bpf/test_run.c:390
bpf_prog_test_run_xdp+0xf1d/0x1ae0 net/bpf/test_run.c:1316
bpf_prog_test_run+0x5e5/0xa30 kernel/bpf/syscall.c:4407
__sys_bpf+0x6aa/0xd90 kernel/bpf/syscall.c:5813
__do_sys_bpf kernel/bpf/syscall.c:5902 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5900 [inline]
__ia32_sys_bpf+0xa0/0xe0 kernel/bpf/syscall.c:5900
ia32_sys_call+0x394d/0x4180 arch/x86/include/generated/asm/syscalls_32.h:358
do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
__do_fast_syscall_32+0xb0/0x110 arch/x86/entry/common.c:387
do_fast_syscall_32+0x38/0x80 arch/x86/entry/common.c:412
do_SYSENTER_32+0x1f/0x30 arch/x86/entry/common.c:450
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
Reported-by: syzbot+83fed965338b573115f7@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=83fed965338b573115f7
Fixes: b36e4523d4d5 ("netfilter: nf_conncount: fix garbage collection confirm race")
Signed-off-by: Kohei Enju <enjuk@amazon.com>
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Commit 1f47ed294a2b ("block: cleanup and fix batch completion adding
conditions") modified the evaluation criteria for the third argument,
'ioerror', in the blk_mq_add_to_batch() function. Initially, the
function had checked if 'ioerror' equals zero. Following the commit, it
started checking for negative error values, with the presumption that
such values, for instance -EIO, would be passed in.
However, blk_mq_add_to_batch() callers do not pass negative error
values. Instead, they pass status codes defined in various ways:
- NVMe PCI and Apple drivers pass NVMe status code
- virtio_blk driver passes the virtblk request header status byte
- null_blk driver passes blk_status_t
These codes are either zero or positive, therefore the revised check
fails to function as intended. Specifically, with the NVMe PCI driver,
this modification led to the failure of the blktests test case nvme/039.
In this test scenario, errors are artificially injected to the NVMe
driver, resulting in positive NVMe status codes passed to
blk_mq_add_to_batch(), which unexpectedly processes the failed I/O in a
batch. Hence the failure.
To correct the ioerror check within blk_mq_add_to_batch(), make all
callers to uniformly pass the argument as boolean. Modify the callers to
check their specific status codes and pass the boolean value 'is_error'.
Also describe the arguments of blK_mq_add_to_batch as kerneldoc.
Fixes: 1f47ed294a2b ("block: cleanup and fix batch completion adding conditions")
Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Link: https://lore.kernel.org/r/20250311104359.1767728-3-shinichiro.kawasaki@wdc.com
[axboe: fold in documentation update]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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https://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless
Johannes berg says:
====================
Few more fixes:
- cfg80211/mac80211
- stop possible runaway wiphy worker
- EHT should not use reserved MPDU size bits
- don't run worker for stopped interfaces
- fix SA Query processing with MLO
- fix lookup of assoc link BSS entries
- correct station flush on unauthorize
- iwlwifi:
- TSO fixes
- fix non-MSI-X platforms
- stop possible runaway restart worker
- rejigger maintainers so I'm not CC'ed on
everything
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Driver is always clearing the mask that sets the VLAN ID/Service Level
in the adapter. Recent change for supporting multiple traffic class
exposed this issue.
Allow setting SL and VLAN_ID while QP is moved from INIT to RTR state.
Fixes: 1ac5a4047975 ("RDMA/bnxt_re: Add bnxt_re RoCE driver")
Fixes: c64b16a37b6d ("RDMA/bnxt_re: Support different traffic class")
Signed-off-by: Saravanan Vajravel <saravanan.vajravel@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://patch.msgid.link/1741670196-2919-1-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
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