Commit graph

901,867 commits

Author SHA1 Message Date
Felix Fietkau
78b698fbf3 wifi: mac80211: do not pass a stopped vif to the driver in .get_txpower
commit 393b6bc174b0dd21bb2a36c13b36e62fc3474a23 upstream.

Avoid potentially crashing in the driver because of uninitialized private data

Fixes: 5b3dc42b1b ("mac80211: add support for driver tx power reporting")
Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://patch.msgid.link/20241002095630.22431-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-08 16:20:53 +01:00
Greg Kroah-Hartman
d4dba9a076 Revert "driver core: Fix uevent_show() vs driver detach race"
commit 9a71892cbcdb9d1459c84f5a4c722b14354158a5 upstream.

This reverts commit 15fffc6a5624b13b428bb1c6e9088e32a55eb82c.

This commit causes a regression, so revert it for now until it can come
back in a way that works for everyone.

Link: https://lore.kernel.org/all/172790598832.1168608.4519484276671503678.stgit@dwillia2-xfh.jf.intel.com/
Fixes: 15fffc6a5624 ("driver core: Fix uevent_show() vs driver detach race")
Cc: stable <stable@kernel.org>
Cc: Ashish Sangwan <a.sangwan@samsung.com>
Cc: Namjae Jeon <namjae.jeon@samsung.com>
Cc: Dirk Behme <dirk.behme@de.bosch.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-08 16:20:53 +01:00
Faisal Hassan
b115ecd0c6 xhci: Fix Link TRB DMA in command ring stopped completion event
commit 075919f6df5dd82ad0b1894898b315fbb3c29b84 upstream.

During the aborting of a command, the software receives a command
completion event for the command ring stopped, with the TRB pointing
to the next TRB after the aborted command.

If the command we abort is located just before the Link TRB in the
command ring, then during the 'command ring stopped' completion event,
the xHC gives the Link TRB in the event's cmd DMA, which causes a
mismatch in handling command completion event.

To address this situation, move the 'command ring stopped' completion
event check slightly earlier, since the specific command it stopped
on isn't of significant concern.

Fixes: 7f84eef0da ("USB: xhci: No-op command queueing and irq handler.")
Cc: stable@vger.kernel.org
Signed-off-by: Faisal Hassan <quic_faisalh@quicinc.com>
Acked-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20241022155631.1185-1-quic_faisalh@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-08 16:20:53 +01:00
Zijun Hu
ceb2f3fe8e usb: phy: Fix API devm_usb_put_phy() can not release the phy
commit fdce49b5da6e0fb6d077986dec3e90ef2b094b50 upstream.

For devm_usb_put_phy(), its comment says it needs to invoke usb_put_phy()
to release the phy, but it does not do that actually, so it can not fully
undo what the API devm_usb_get_phy() does, that is wrong, fixed by using
devres_release() instead of devres_destroy() within the API.

Fixes: cedf860237 ("usb: phy: move bulk of otg/otg.c to phy/phy.c")
Cc: stable@vger.kernel.org
Signed-off-by: Zijun Hu <quic_zijuhu@quicinc.com>
Link: https://lore.kernel.org/r/20241020-usb_phy_fix-v1-1-7f79243b8e1e@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-08 16:20:53 +01:00
Zongmin Zhou
aaa1b28378 usbip: tools: Fix detach_port() invalid port error path
commit e7cd4b811c9e019f5acbce85699c622b30194c24 upstream.

The detach_port() doesn't return error
when detach is attempted on an invalid port.

Fixes: 40ecdeb1a1 ("usbip: usbip_detach: fix to check for invalid ports")
Cc: stable@vger.kernel.org
Reviewed-by: Hongren Zheng <i@zenithal.me>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Zongmin Zhou <zhouzongmin@kylinos.cn>
Link: https://lore.kernel.org/r/20241024022700.1236660-1-min_halo@163.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-08 16:20:53 +01:00
Dimitri Sivanich
d54dad3af7 misc: sgi-gru: Don't disable preemption in GRU driver
[ Upstream commit b983b271662bd6104d429b0fd97af3333ba760bf ]

Disabling preemption in the GRU driver is unnecessary, and clashes with
sleeping locks in several code paths.  Remove preempt_disable and
preempt_enable from the GRU driver.

Signed-off-by: Dimitri Sivanich <sivanich@hpe.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:53 +01:00
Daniel Palmer
57aabb8c97 net: amd: mvme147: Fix probe banner message
[ Upstream commit 82c5b53140faf89c31ea2b3a0985a2f291694169 ]

Currently this driver prints this line with what looks like
a rogue format specifier when the device is probed:
[    2.840000] eth%d: MVME147 at 0xfffe1800, irq 12, Hardware Address xx:xx:xx:xx:xx:xx

Change the printk() for netdev_info() and move it after the
registration has completed so it prints out the name of the
interface properly.

Signed-off-by: Daniel Palmer <daniel@0x0f.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:53 +01:00
Xiongfeng Wang
14b6ca78c9 firmware: arm_sdei: Fix the input parameter of cpuhp_remove_state()
[ Upstream commit c83212d79be2c9886d3e6039759ecd388fd5fed1 ]

In sdei_device_freeze(), the input parameter of cpuhp_remove_state() is
passed as 'sdei_entry_point' by mistake. Change it to 'sdei_hp_state'.

Fixes: d2c48b2387eb ("firmware: arm_sdei: Fix sleep from invalid context BUG")
Signed-off-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Reviewed-by: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20241016084740.183353-1-wangxiongfeng2@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:53 +01:00
zhong jiang
3c2206700e drivers/misc: ti-st: Remove unneeded variable in st_tty_open
[ Upstream commit 8b063441b7417a79b0c27efc401479748ccf8ad1 ]

st_tty_open do not need local variable to store different value,
Hence just remove it.

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Link: https://lore.kernel.org/r/1568307147-43468-1-git-send-email-zhongjiang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stable-dep-of: c83212d79be2 ("firmware: arm_sdei: Fix the input parameter of cpuhp_remove_state()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:53 +01:00
Pablo Neira Ayuso
ac7df3fc80 netfilter: nft_payload: sanitize offset and length before calling skb_checksum()
[ Upstream commit d5953d680f7e96208c29ce4139a0e38de87a57fe ]

If access to offset + length is larger than the skbuff length, then
skb_checksum() triggers BUG_ON().

skb_checksum() internally subtracts the length parameter while iterating
over skbuff, BUG_ON(len) at the end of it checks that the expected
length to be included in the checksum calculation is fully consumed.

Fixes: 7ec3f7b47b ("netfilter: nft_payload: add packet mangling support")
Reported-by: Slavin Liu <slavin-ayu@qq.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:53 +01:00
Benoît Monin
477b35d94a net: skip offload for NETIF_F_IPV6_CSUM if ipv6 header contains extension
[ Upstream commit 04c20a9356f283da623903e81e7c6d5df7e4dc3c ]

As documented in skbuff.h, devices with NETIF_F_IPV6_CSUM capability
can only checksum TCP and UDP over IPv6 if the IP header does not
contains extension.

This is enforced for UDP packets emitted from user-space to an IPv6
address as they go through ip6_make_skb(), which calls
__ip6_append_data() where a check is done on the header size before
setting CHECKSUM_PARTIAL.

But the introduction of UDP encapsulation with fou6 added a code-path
where it is possible to get an skb with a partial UDP checksum and an
IPv6 header with extension:
* fou6 adds a UDP header with a partial checksum if the inner packet
does not contains a valid checksum.
* ip6_tunnel adds an IPv6 header with a destination option extension
header if encap_limit is non-zero (the default value is 4).

The thread linked below describes in more details how to reproduce the
problem with GRE-in-UDP tunnel.

Add a check on the network header size in skb_csum_hwoffload_help() to
make sure no IPv6 packet with extension header is handed to a network
device with NETIF_F_IPV6_CSUM capability.

Link: https://lore.kernel.org/netdev/26548921.1r3eYUQgxm@benoit.monin/T/#u
Fixes: aa3463d65e ("fou: Add encap ops for IPv6 tunnels")
Signed-off-by: Benoît Monin <benoit.monin@gmx.fr>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/5fbeecfc311ea182aa1d1c771725ab8b4cac515e.1729778144.git.benoit.monin@gmx.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:53 +01:00
Xin Long
5715da5410 net: support ip generic csum processing in skb_csum_hwoffload_help
[ Upstream commit 62fafcd63139920eb25b3fbf154177ce3e6f3232 ]

NETIF_F_IP|IPV6_CSUM feature flag indicates UDP and TCP csum offload
while NETIF_F_HW_CSUM feature flag indicates ip generic csum offload
for HW, which includes not only for TCP/UDP csum, but also for other
protocols' csum like GRE's.

However, in skb_csum_hwoffload_help() it only checks features against
NETIF_F_CSUM_MASK(NETIF_F_HW|IP|IPV6_CSUM). So if it's a non TCP/UDP
packet and the features doesn't support NETIF_F_HW_CSUM, but supports
NETIF_F_IP|IPV6_CSUM only, it would still return 0 and leave the HW
to do csum.

This patch is to support ip generic csum processing by checking
NETIF_F_HW_CSUM for all protocols, and check (NETIF_F_IP_CSUM |
NETIF_F_IPV6_CSUM) only for TCP and UDP.

Note that we're using skb->csum_offset to check if it's a TCP/UDP
proctol, this might be fragile. However, as Alex said, for now we
only have a few L4 protocols that are requesting Tx csum offload,
we'd better fix this until a new protocol comes with a same csum
offset.

v1->v2:
  - not extend skb->csum_not_inet, but use skb->csum_offset to tell
    if it's an UDP/TCP csum packet.
v2->v3:
  - add a note in the changelog, as Willem suggested.

Suggested-by: Alexander Duyck <alexander.duyck@gmail.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: 04c20a9356f2 ("net: skip offload for NETIF_F_IPV6_CSUM if ipv6 header contains extension")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:53 +01:00
Byeonguk Jeong
91afbc0eb3 bpf: Fix out-of-bounds write in trie_get_next_key()
[ Upstream commit 13400ac8fb80c57c2bfb12ebd35ee121ce9b4d21 ]

trie_get_next_key() allocates a node stack with size trie->max_prefixlen,
while it writes (trie->max_prefixlen + 1) nodes to the stack when it has
full paths from the root to leaves. For example, consider a trie with
max_prefixlen is 8, and the nodes with key 0x00/0, 0x00/1, 0x00/2, ...
0x00/8 inserted. Subsequent calls to trie_get_next_key with _key with
.prefixlen = 8 make 9 nodes be written on the node stack with size 8.

Fixes: b471f2f1de ("bpf: implement MAP_GET_NEXT_KEY command for LPM_TRIE map")
Signed-off-by: Byeonguk Jeong <jungbu2855@gmail.com>
Reviewed-by: Toke Høiland-Jørgensen <toke@kernel.org>
Tested-by: Hou Tao <houtao1@huawei.com>
Acked-by: Hou Tao <houtao1@huawei.com>
Link: https://lore.kernel.org/r/Zxx384ZfdlFYnz6J@localhost.localdomain
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:52 +01:00
Pedro Tammela
dbe778b08b net/sched: stop qdisc_tree_reduce_backlog on TC_H_ROOT
[ Upstream commit 2e95c4384438adeaa772caa560244b1a2efef816 ]

In qdisc_tree_reduce_backlog, Qdiscs with major handle ffff: are assumed
to be either root or ingress. This assumption is bogus since it's valid
to create egress qdiscs with major handle ffff:
Budimir Markovic found that for qdiscs like DRR that maintain an active
class list, it will cause a UAF with a dangling class pointer.

In 066a3b5b23, the concern was to avoid iterating over the ingress
qdisc since its parent is itself. The proper fix is to stop when parent
TC_H_ROOT is reached because the only way to retrieve ingress is when a
hierarchy which does not contain a ffff: major handle call into
qdisc_lookup with TC_H_MAJ(TC_H_ROOT).

In the scenario where major ffff: is an egress qdisc in any of the tree
levels, the updates will also propagate to TC_H_ROOT, which then the
iteration must stop.

Fixes: 066a3b5b23 ("[NET_SCHED] sch_api: fix qdisc_tree_decrease_qlen() loop")
Reported-by: Budimir Markovic <markovicbudimir@gmail.com>
Suggested-by: Jamal Hadi Salim <jhs@mojatatu.com>
Tested-by: Victor Nogueira <victor@mojatatu.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>

 net/sched/sch_api.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
Reviewed-by: Simon Horman <horms@kernel.org>

Link: https://patch.msgid.link/20241024165547.418570-1-jhs@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:52 +01:00
Pablo Neira Ayuso
2bb69ce76e gtp: allow -1 to be specified as file description from userspace
[ Upstream commit 7515e37bce5c428a56a9b04ea7e96b3f53f17150 ]

Existing user space applications maintained by the Osmocom project are
breaking since a recent fix that addresses incorrect error checking.

Restore operation for user space programs that specify -1 as file
descriptor to skip GTPv0 or GTPv1 only sockets.

Fixes: defd8b3c37b0 ("gtp: fix a potential NULL pointer dereference")
Reported-by: Pau Espin Pedrol <pespin@sysmocom.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Tested-by: Oliver Smith <osmith@sysmocom.de>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20241022144825.66740-1-pablo@netfilter.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:52 +01:00
Christophe JAILLET
5f6907bf5c gtp: simplify error handling code in 'gtp_encap_enable()'
[ Upstream commit b289ba5e07105548b8219695e5443d807a825eb8 ]

'gtp_encap_disable_sock(sk)' handles the case where sk is NULL, so there
is no need to test it before calling the function.

This saves a few line of code.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: 7515e37bce5c ("gtp: allow -1 to be specified as file description from userspace")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:52 +01:00
Maciej Falkowski
c593895bf0 dt-bindings: gpu: Convert Samsung Image Rotator to dt-schema
[ Upstream commit 6e3ffcd592060403ee2d956c9b1704775898db79 ]

Convert Samsung Image Rotator to newer dt-schema format.

Signed-off-by: Maciej Falkowski <m.falkowski@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Stable-dep-of: 338c4d3902fe ("igb: Disable threaded IRQ for igb_msix_other")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:52 +01:00
Christophe JAILLET
b2ed38ff2a ASoC: cs42l51: Fix some error handling paths in cs42l51_probe()
[ Upstream commit d221b844ee79823ffc29b7badc4010bdb0960224 ]

If devm_gpiod_get_optional() fails, we need to disable previously enabled
regulators, as done in the other error handling path of the function.

Also, gpiod_set_value_cansleep(, 1) needs to be called to undo a
potential gpiod_set_value_cansleep(, 0).
If the "reset" gpio is not defined, this additional call is just a no-op.

This behavior is the same as the one already in the .remove() function.

Fixes: 11b9cd748e ("ASoC: cs42l51: add reset management")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://patch.msgid.link/a5e5f4b9fb03f46abd2c93ed94b5c395972ce0d1.1729975570.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:52 +01:00
Daniel Gabay
9c98ee7ea4 wifi: iwlwifi: mvm: Fix response handling in iwl_mvm_send_recovery_cmd()
[ Upstream commit 07a6e3b78a65f4b2796a8d0d4adb1a15a81edead ]

1. The size of the response packet is not validated.
2. The response buffer is not freed.

Resolve these issues by switching to iwl_mvm_send_cmd_status(),
which handles both size validation and frees the buffer.

Fixes: f130bb75d8 ("iwlwifi: add FW recovery flow")
Signed-off-by: Daniel Gabay <daniel.gabay@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://patch.msgid.link/20241010140328.76c73185951e.Id3b6ca82ced2081f5ee4f33c997491d0ebda83f7@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:52 +01:00
Emmanuel Grumbach
8b30a66a94 wifi: iwlwifi: mvm: disconnect station vifs if recovery failed
[ Upstream commit e50a88e5cb8792cc416866496288c5f4d1eb4b1f ]

This will allow to reconnect immediately instead of leaving the
connection in a limbo state.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Reviewed-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240128084842.e90531cd3a36.Iebdc9483983c0d8497f9dcf9d79ec37332a5fdcc@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Stable-dep-of: 07a6e3b78a65 ("wifi: iwlwifi: mvm: Fix response handling in iwl_mvm_send_recovery_cmd()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:52 +01:00
Youghandhar Chintala
130b34a204 mac80211: Add support to trigger sta disconnect on hardware restart
[ Upstream commit 7d352ccf1e9935b5222ca84e8baeb07a0c8f94b9 ]

Currently in case of target hardware restart, we just reconfig and
re-enable the security keys and enable the network queues to start
data traffic back from where it was interrupted.

Many ath10k wifi chipsets have sequence numbers for the data
packets assigned by firmware and the mac sequence number will
restart from zero after target hardware restart leading to mismatch
in the sequence number expected by the remote peer vs the sequence
number of the frame sent by the target firmware.

This mismatch in sequence number will cause out-of-order packets
on the remote peer and all the frames sent by the device are dropped
until we reach the sequence number which was sent before we restarted
the target hardware

In order to fix this, we trigger a sta disconnect, in case of target
hw restart. After this there will be a fresh connection and thereby
avoiding the dropping of frames by remote peer.

The right fix would be to pull the entire data path into the host
which is not feasible or would need lots of complex changes and
will still be inefficient.

Tested on ath10k using WCN3990, QCA6174

Signed-off-by: Youghandhar Chintala <youghand@codeaurora.org>
Link: https://lore.kernel.org/r/20220308115325.5246-2-youghand@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Stable-dep-of: 07a6e3b78a65 ("wifi: iwlwifi: mvm: Fix response handling in iwl_mvm_send_recovery_cmd()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:52 +01:00
Johannes Berg
0a2112edf6 mac80211: do drv_reconfig_complete() before restarting all
[ Upstream commit 13dee10b30c058ee2c58c5da00339cc0d4201aa6 ]

When we reconfigure, the driver might do some things to complete
the reconfiguration. It's strange and could be broken in some
cases because we restart other works (e.g. remain-on-channel and
TX) before this happens, yet only start queues later.

Change this to do the reconfig complete when reconfiguration is
actually complete, not when we've already started doing other
things again.

For iwlwifi, this should fix a race where the reconfig can race
with TX, for ath10k and ath11k that also use this it won't make
a difference because they just start queues there, and mac80211
also stopped the queues and will restart them later as before.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211129152938.cab99f22fe19.Iefe494687f15fd85f77c1b989d1149c8efdfdc36@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Stable-dep-of: 07a6e3b78a65 ("wifi: iwlwifi: mvm: Fix response handling in iwl_mvm_send_recovery_cmd()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:52 +01:00
Felix Fietkau
e67cb5a1cd wifi: mac80211: skip non-uploaded keys in ieee80211_iter_keys
[ Upstream commit 52009b419355195912a628d0a9847922e90c348c ]

Sync iterator conditions with ieee80211_iter_keys_rcu.

Fixes: 830af02f24 ("mac80211: allow driver to iterate keys")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://patch.msgid.link/20241006153630.87885-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:52 +01:00
Xiu Jianfeng
4f3e9217fb cgroup: Fix potential overflow issue when checking max_depth
[ Upstream commit 3cc4e13bb1617f6a13e5e6882465984148743cf4 ]

cgroup.max.depth is the maximum allowed descent depth below the current
cgroup. If the actual descent depth is equal or larger, an attempt to
create a new child cgroup will fail. However due to the cgroup->max_depth
is of int type and having the default value INT_MAX, the condition
'level > cgroup->max_depth' will never be satisfied, and it will cause
an overflow of the level after it reaches to INT_MAX.

Fix it by starting the level from 0 and using '>=' instead.

It's worth mentioning that this issue is unlikely to occur in reality,
as it's impossible to have a depth of INT_MAX hierarchy, but should be
be avoided logically.

Fixes: 1a926e0bba ("cgroup: implement hierarchy limits")
Signed-off-by: Xiu Jianfeng <xiujianfeng@huawei.com>
Reviewed-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:52 +01:00
Sabrina Dubroca
401ad99a5a xfrm: validate new SA's prefixlen using SA family when sel.family is unset
[ Upstream commit 3f0ab59e6537c6a8f9e1b355b48f9c05a76e8563 ]

This expands the validation introduced in commit 07bf790895 ("xfrm:
Validate address prefix lengths in the xfrm selector.")

syzbot created an SA with
    usersa.sel.family = AF_UNSPEC
    usersa.sel.prefixlen_s = 128
    usersa.family = AF_INET

Because of the AF_UNSPEC selector, verify_newsa_info doesn't put
limits on prefixlen_{s,d}. But then copy_from_user_state sets
x->sel.family to usersa.family (AF_INET). Do the same conversion in
verify_newsa_info before validating prefixlen_{s,d}, since that's how
prefixlen is going to be used later on.

Reported-by: syzbot+cc39f136925517aed571@syzkaller.appspotmail.com
Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Antony Antony <antony.antony@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:52 +01:00
junhua huang
9085d7eaac arm64/uprobes: change the uprobe_opcode_t typedef to fix the sparse warning
commit ef08c0fadd8a17ebe429b85e23952dac3263ad34 upstream.

After we fixed the uprobe inst endian in aarch_be, the sparse check report
the following warning info:

sparse warnings: (new ones prefixed by >>)
>> kernel/events/uprobes.c:223:25: sparse: sparse: restricted __le32 degrades to integer
>> kernel/events/uprobes.c:574:56: sparse: sparse: incorrect type in argument 4 (different base types)
@@     expected unsigned int [addressable] [usertype] opcode @@     got restricted __le32 [usertype] @@
   kernel/events/uprobes.c:574:56: sparse:     expected unsigned int [addressable] [usertype] opcode
   kernel/events/uprobes.c:574:56: sparse:     got restricted __le32 [usertype]
>> kernel/events/uprobes.c:1483:32: sparse: sparse: incorrect type in initializer (different base types)
@@     expected unsigned int [usertype] insn @@     got restricted __le32 [usertype] @@
   kernel/events/uprobes.c:1483:32: sparse:     expected unsigned int [usertype] insn
   kernel/events/uprobes.c:1483:32: sparse:     got restricted __le32 [usertype]

use the __le32 to u32 for uprobe_opcode_t, to keep the same.

Fixes: 60f07e22a73d ("arm64:uprobe fix the uprobe SWBP_INSN in big-endian")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: junhua huang <huang.junhua@zte.com.cn>
Link: https://lore.kernel.org/r/202212280954121197626@zte.com.cn
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-08 16:20:52 +01:00
Paul Moore
5121ac6723 selinux: improve error checking in sel_write_load()
[ Upstream commit 42c773238037c90b3302bf37a57ae3b5c3f6004a ]

Move our existing input sanity checking to the top of sel_write_load()
and add a check to ensure the buffer size is non-zero.

Move a local variable initialization from the declaration to before it
is used.

Minor style adjustments.

Reported-by: Sam Sun <samsun1006219@gmail.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
[cascardo: keep fsi initialization at its declaration point as it is used earlier]
[cascardo: keep check for 64MiB size limit]
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@igalia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:52 +01:00
Haiyang Zhang
31a38a908c hv_netvsc: Fix VF namespace also in synthetic NIC NETDEV_REGISTER event
commit 4c262801ea60c518b5bebc22a09f5b78b3147da2 upstream.

The existing code moves VF to the same namespace as the synthetic NIC
during netvsc_register_vf(). But, if the synthetic device is moved to a
new namespace after the VF registration, the VF won't be moved together.

To make the behavior more consistent, add a namespace check for synthetic
NIC's NETDEV_REGISTER event (generated during its move), and move the VF
if it is not in the same namespace.

Cc: stable@vger.kernel.org
Fixes: c0a41b887c ("hv_netvsc: move VF to same namespace as netvsc device")
Suggested-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/1729275922-17595-1-git-send-email-haiyangz@microsoft.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-08 16:20:51 +01:00
José Relvas
ae95e0235c ALSA: hda/realtek: Add subwoofer quirk for Acer Predator G9-593
commit 35fdc6e1c16099078bcbd73a6c8f1733ae7f1909 upstream.

The Acer Predator G9-593 has a 2+1 speaker system which isn't probed
correctly.
This patch adds a quirk with the proper pin connections.

Note that I do not own this laptop, so I cannot guarantee that this
fixes the issue.
Testing was done by other users here:
https://discussion.fedoraproject.org/t/-/118482

This model appears to have two different dev IDs...

- 0x1177 (as seen on the forum link above)
- 0x1178 (as seen on https://linux-hardware.org/?probe=127df9999f)

I don't think the audio system was changed between model revisions, so
the patch applies for both IDs.

Signed-off-by: José Relvas <josemonsantorelvas@gmail.com>
Link: https://patch.msgid.link/20241020102756.225258-1-josemonsantorelvas@gmail.com
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-08 16:20:51 +01:00
Ryusuke Konishi
412a30b1b2 nilfs2: fix kernel bug due to missing clearing of buffer delay flag
commit 6ed469df0bfbef3e4b44fca954a781919db9f7ab upstream.

Syzbot reported that after nilfs2 reads a corrupted file system image
and degrades to read-only, the BUG_ON check for the buffer delay flag
in submit_bh_wbc() may fail, causing a kernel bug.

This is because the buffer delay flag is not cleared when clearing the
buffer state flags to discard a page/folio or a buffer head. So, fix
this.

This became necessary when the use of nilfs2's own page clear routine
was expanded.  This state inconsistency does not occur if the buffer
is written normally by log writing.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Link: https://lore.kernel.org/r/20241015213300.7114-1-konishi.ryusuke@gmail.com
Fixes: 8c26c4e269 ("nilfs2: fix issue with flush kernel thread after remount in RO mode because of driver's internal error or metadata corruption")
Reported-by: syzbot+985ada84bf055a575c07@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=985ada84bf055a575c07
Cc: stable@vger.kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-08 16:20:51 +01:00
Shubham Panwar
507f393403 ACPI: button: Add DMI quirk for Samsung Galaxy Book2 to fix initial lid detection issue
commit 8fa73ee44daefc884c53a25158c25a4107eb5a94 upstream.

Add a DMI quirk for Samsung Galaxy Book2 to fix an initial lid state
detection issue.

The _LID device incorrectly returns the lid status as "closed" during
boot, causing the system to enter a suspend loop right after booting.

The quirk ensures that the correct lid state is reported initially,
preventing the system from immediately suspending after startup.  It
only addresses the initial lid state detection and ensures proper
system behavior upon boot.

Signed-off-by: Shubham Panwar <shubiisp8@gmail.com>
Link: https://patch.msgid.link/20241020095045.6036-2-shubiisp8@gmail.com
[ rjw: Changelog edits ]
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-08 16:20:51 +01:00
Christian Heusel
0fdb503758 ACPI: resource: Add LG 16T90SP to irq1_level_low_skip_override[]
commit 53f1a907d36fb3aa02a4d34073bcec25823a6c74 upstream.

The LG Gram Pro 16 2-in-1 (2024) the 16T90SP has its keybopard IRQ (1)
described as ActiveLow in the DSDT, which the kernel overrides to EdgeHigh
which breaks the keyboard.

Add the 16T90SP to the irq1_level_low_skip_override[] quirk table to fix
this.

Reported-by: Dirk Holten <dirk.holten@gmx.de>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219382
Cc: All applicable <stable@vger.kernel.org>
Suggested-by: Dirk Holten <dirk.holten@gmx.de>
Signed-off-by: Christian Heusel <christian@heusel.eu>
Link: https://patch.msgid.link/20241017-lg-gram-pro-keyboard-v2-1-7c8fbf6ff718@heusel.eu
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-08 16:20:51 +01:00
Mario Limonciello
43b4fa6e0e drm/amd: Guard against bad data for ATIF ACPI method
commit bf58f03931fdcf7b3c45cb76ac13244477a60f44 upstream.

If a BIOS provides bad data in response to an ATIF method call
this causes a NULL pointer dereference in the caller.

```
? show_regs (arch/x86/kernel/dumpstack.c:478 (discriminator 1))
? __die (arch/x86/kernel/dumpstack.c:423 arch/x86/kernel/dumpstack.c:434)
? page_fault_oops (arch/x86/mm/fault.c:544 (discriminator 2) arch/x86/mm/fault.c:705 (discriminator 2))
? do_user_addr_fault (arch/x86/mm/fault.c:440 (discriminator 1) arch/x86/mm/fault.c:1232 (discriminator 1))
? acpi_ut_update_object_reference (drivers/acpi/acpica/utdelete.c:642)
? exc_page_fault (arch/x86/mm/fault.c:1542)
? asm_exc_page_fault (./arch/x86/include/asm/idtentry.h:623)
? amdgpu_atif_query_backlight_caps.constprop.0 (drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:387 (discriminator 2)) amdgpu
? amdgpu_atif_query_backlight_caps.constprop.0 (drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c:386 (discriminator 1)) amdgpu
```

It has been encountered on at least one system, so guard for it.

Fixes: d38ceaf99e ("drm/amdgpu: add core driver (v4)")
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit c9b7c809b89f24e9372a4e7f02d64c950b07fdee)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-11-08 16:20:51 +01:00
Kailang Yang
4cab98a173 ALSA: hda/realtek: Update default depop procedure
[ Upstream commit e3ea2757c312e51bbf62ebc434a6f7df1e3a201f ]

Old procedure has a chance to meet Headphone no output.

Fixes: c2d6af53a4 ("ALSA: hda/realtek - Add default procedure for suspend and resume state")
Signed-off-by: Kailang Yang <kailang@realtek.com>
Link: https://lore.kernel.org/17b717a0a0b04a77aea4a8ec820cba13@realtek.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:51 +01:00
Andrey Shumilin
d575414361 ALSA: firewire-lib: Avoid division by zero in apply_constraint_to_size()
[ Upstream commit 72cafe63b35d06b5cfbaf807e90ae657907858da ]

The step variable is initialized to zero. It is changed in the loop,
but if it's not changed it will remain zero. Add a variable check
before the division.

The observed behavior was introduced by commit 826b5de90c
("ALSA: firewire-lib: fix insufficient PCM rule for period/buffer size"),
and it is difficult to show that any of the interval parameters will
satisfy the snd_interval_test() condition with data from the
amdtp_rate_table[] table.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: 826b5de90c ("ALSA: firewire-lib: fix insufficient PCM rule for period/buffer size")
Signed-off-by: Andrey Shumilin <shum.sdl@nppct.ru>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://patch.msgid.link/20241018060018.1189537-1-shum.sdl@nppct.ru
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:51 +01:00
Jinjie Ruan
a8219446b9 posix-clock: posix-clock: Fix unbalanced locking in pc_clock_settime()
[ Upstream commit 6e62807c7fbb3c758d233018caf94dfea9c65dbd ]

If get_clock_desc() succeeds, it calls fget() for the clockid's fd,
and get the clk->rwsem read lock, so the error path should release
the lock to make the lock balance and fput the clockid's fd to make
the refcount balance and release the fd related resource.

However the below commit left the error path locked behind resulting in
unbalanced locking. Check timespec64_valid_strict() before
get_clock_desc() to fix it, because the "ts" is not changed
after that.

Fixes: d8794ac20a29 ("posix-clock: Fix missing timespec64 check in pc_clock_settime()")
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Acked-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
[pabeni@redhat.com: fixed commit message typo]
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:51 +01:00
Heiner Kallweit
6e2bbba8bb r8169: avoid unsolicited interrupts
[ Upstream commit 10ce0db787004875f4dba068ea952207d1d8abeb ]

It was reported that after resume from suspend a PCI error is logged
and connectivity is broken. Error message is:
PCI error (cmd = 0x0407, status_errs = 0x0000)
The message seems to be a red herring as none of the error bits is set,
and the PCI command register value also is normal. Exception handling
for a PCI error includes a chip reset what apparently brakes connectivity
here. The interrupt status bit triggering the PCI error handling isn't
actually used on PCIe chip versions, so it's not clear why this bit is
set by the chip. Fix this by ignoring this bit on PCIe chip versions.

Fixes: 0e4851502f ("r8169: merge with version 8.001.00 of Realtek's r8168 driver")
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=219388
Tested-by: Atlas Yu <atlas.yu@canonical.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/78e2f535-438f-4212-ad94-a77637ac6c9c@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:51 +01:00
Dmitry Antipov
2f868ce601 net: sched: fix use-after-free in taprio_change()
[ Upstream commit f504465970aebb2467da548f7c1efbbf36d0f44b ]

In 'taprio_change()', 'admin' pointer may become dangling due to sched
switch / removal caused by 'advance_sched()', and critical section
protected by 'q->current_entry_lock' is too small to prevent from such
a scenario (which causes use-after-free detected by KASAN). Fix this
by prefer 'rcu_replace_pointer()' over 'rcu_assign_pointer()' to update
'admin' immediately before an attempt to schedule freeing.

Fixes: a3d43c0d56 ("taprio: Add support adding an admin schedule")
Reported-by: syzbot+b65e0af58423fc8a73aa@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=b65e0af58423fc8a73aa
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Link: https://patch.msgid.link/20241018051339.418890-1-dmantipov@yandex.ru
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:51 +01:00
Oliver Neukum
9fc566dfed net: usb: usbnet: fix name regression
[ Upstream commit 8a7d12d674ac6f2147c18f36d1e15f1a48060edf ]

The fix for MAC addresses broke detection of the naming convention
because it gave network devices no random MAC before bind()
was called. This means that the check for the local assignment bit
was always negative as the address was zeroed from allocation,
instead of from overwriting the MAC with a unique hardware address.

The correct check for whether bind() has altered the MAC is
done with is_zero_ether_addr

Signed-off-by: Oliver Neukum <oneukum@suse.com>
Reported-by: Greg Thelen <gthelen@google.com>
Diagnosed-by: John Sperbeck <jsperbeck@google.com>
Fixes: bab8eb0dd4cb9 ("usbnet: modern method to get random MAC")
Link: https://patch.msgid.link/20241017071849.389636-1-oneukum@suse.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:51 +01:00
Wang Hai
6b7ce8ee01 be2net: fix potential memory leak in be_xmit()
[ Upstream commit e4dd8bfe0f6a23acd305f9b892c00899089bd621 ]

The be_xmit() returns NETDEV_TX_OK without freeing skb
in case of be_xmit_enqueue() fails, add dev_kfree_skb_any() to fix it.

Fixes: 760c295e0e ("be2net: Support for OS2BMC.")
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Message-ID: <20241015144802.12150-1-wanghai38@huawei.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:51 +01:00
Wang Hai
8d5b20fbc5 net/sun3_82586: fix potential memory leak in sun3_82586_send_packet()
[ Upstream commit 2cb3f56e827abb22c4168ad0c1bbbf401bb2f3b8 ]

The sun3_82586_send_packet() returns NETDEV_TX_OK without freeing skb
in case of skb->len being too long, add dev_kfree_skb() to fix it.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Wang Hai <wanghai38@huawei.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Message-ID: <20241015144148.7918-1-wanghai38@huawei.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:51 +01:00
Leo Yan
5e3231b352 tracing: Consider the NULL character when validating the event length
[ Upstream commit 0b6e2e22cb23105fcb171ab92f0f7516c69c8471 ]

strlen() returns a string length excluding the null byte. If the string
length equals to the maximum buffer length, the buffer will have no
space for the NULL terminating character.

This commit checks this condition and returns failure for it.

Link: https://lore.kernel.org/all/20241007144724.920954-1-leo.yan@arm.com/

Fixes: dec65d79fd ("tracing/probe: Check event name length correctly")
Signed-off-by: Leo Yan <leo.yan@arm.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:51 +01:00
Dave Kleikamp
8bbfbf681e jfs: Fix sanity check in dbMount
[ Upstream commit 67373ca8404fe57eb1bb4b57f314cff77ce54932 ]

MAXAG is a legitimate value for bmp->db_numag

Fixes: e63866a47556 ("jfs: fix out-of-bounds in dbNextAG() and diAlloc()")

Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:50 +01:00
Gianfranco Trad
417bd613bd udf: fix uninit-value use in udf_get_fileshortad
[ Upstream commit 264db9d666ad9a35075cc9ed9ec09d021580fbb1 ]

Check for overflow when computing alen in udf_current_aext to mitigate
later uninit-value use in udf_get_fileshortad KMSAN bug[1].
After applying the patch reproducer did not trigger any issue[2].

[1] https://syzkaller.appspot.com/bug?extid=8901c4560b7ab5c2f9df
[2] https://syzkaller.appspot.com/x/log.txt?x=10242227980000

Reported-by: syzbot+8901c4560b7ab5c2f9df@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=8901c4560b7ab5c2f9df
Tested-by: syzbot+8901c4560b7ab5c2f9df@syzkaller.appspotmail.com
Suggested-by: Jan Kara <jack@suse.com>
Signed-off-by: Gianfranco Trad <gianf.trad@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://patch.msgid.link/20240925074613.8475-3-gianf.trad@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:50 +01:00
Hans de Goede
02c86c5d5e drm/vboxvideo: Replace fake VLA at end of vbva_mouse_pointer_shape with real VLA
[ Upstream commit d92b90f9a54d9300a6e883258e79f36dab53bfae ]

Replace the fake VLA at end of the vbva_mouse_pointer_shape shape with
a real VLA to fix a "memcpy: detected field-spanning write error" warning:

[   13.319813] memcpy: detected field-spanning write (size 16896) of single field "p->data" at drivers/gpu/drm/vboxvideo/hgsmi_base.c:154 (size 4)
[   13.319841] WARNING: CPU: 0 PID: 1105 at drivers/gpu/drm/vboxvideo/hgsmi_base.c:154 hgsmi_update_pointer_shape+0x192/0x1c0 [vboxvideo]
[   13.320038] Call Trace:
[   13.320173]  hgsmi_update_pointer_shape [vboxvideo]
[   13.320184]  vbox_cursor_atomic_update [vboxvideo]

Note as mentioned in the added comment it seems the original length
calculation for the allocated and send hgsmi buffer is 4 bytes too large.
Changing this is not the goal of this patch, so this behavior is kept.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240827104523.17442-1-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:50 +01:00
Nico Boehr
c491ce22f9 KVM: s390: gaccess: Check if guest address is in memslot
[ Upstream commit e8061f06185be0a06a73760d6526b8b0feadfe52 ]

Previously, access_guest_page() did not check whether the given guest
address is inside of a memslot. This is not a problem, since
kvm_write_guest_page/kvm_read_guest_page return -EFAULT in this case.

However, -EFAULT is also returned when copy_to/from_user fails.

When emulating a guest instruction, the address being outside a memslot
usually means that an addressing exception should be injected into the
guest.

Failure in copy_to/from_user however indicates that something is wrong
in userspace and hence should be handled there.

To be able to distinguish these two cases, return PGM_ADDRESSING in
access_guest_page() when the guest address is outside guest memory. In
access_guest_real(), populate vcpu->arch.pgm.code such that
kvm_s390_inject_prog_cond() can be used in the caller for injecting into
the guest (if applicable).

Since this adds a new return value to access_guest_page(), we need to make
sure that other callers are not confused by the new positive return value.

There are the following users of access_guest_page():
- access_guest_with_key() does the checking itself (in
  guest_range_to_gpas()), so this case should never happen. Even if, the
  handling is set up properly.
- access_guest_real() just passes the return code to its callers, which
  are:
    - read_guest_real() - see below
    - write_guest_real() - see below

There are the following users of read_guest_real():
- ar_translation() in gaccess.c which already returns PGM_*
- setup_apcb10(), setup_apcb00(), setup_apcb11() in vsie.c which always
  return -EFAULT on read_guest_read() nonzero return - no change
- shadow_crycb(), handle_stfle() always present this as validity, this
  could be handled better but doesn't change current behaviour - no change

There are the following users of write_guest_real():
- kvm_s390_store_status_unloaded() always returns -EFAULT on
  write_guest_real() failure.

Fixes: 2293897805 ("KVM: s390: add architecture compliant guest access functions")
Cc: stable@vger.kernel.org
Signed-off-by: Nico Boehr <nrb@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Link: https://lore.kernel.org/r/20240917151904.74314-2-nrb@linux.ibm.com
Acked-by: Janosch Frank <frankja@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:50 +01:00
Janis Schoetterl-Glausch
f334578c68 KVM: s390: gaccess: Cleanup access to guest pages
[ Upstream commit bad13799e0305deb258372b7298a86be4c78aaba ]

Introduce a helper function for guest frame access.

Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Message-Id: <20211126164549.7046-4-scgl@linux.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Stable-dep-of: e8061f06185b ("KVM: s390: gaccess: Check if guest address is in memslot")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:50 +01:00
Janis Schoetterl-Glausch
8a2e882914 KVM: s390: gaccess: Refactor access address range check
[ Upstream commit 7faa543df19bf62d4583a64d3902705747f2ad29 ]

Do not round down the first address to the page boundary, just translate
it normally, which gives the value we care about in the first place.
Given this, translating a single address is just the special case of
translating a range spanning a single page.

Make the output optional, so the function can be used to just check a
range.

Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Message-Id: <20211126164549.7046-3-scgl@linux.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Stable-dep-of: e8061f06185b ("KVM: s390: gaccess: Check if guest address is in memslot")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:50 +01:00
Janis Schoetterl-Glausch
f1f3615bc3 KVM: s390: gaccess: Refactor gpa and length calculation
[ Upstream commit 416e7f0c9d613bf84e182eba9547ae8f9f5bfa4c ]

Improve readability by renaming the length variable and
not calculating the offset manually.

Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Message-Id: <20211126164549.7046-2-scgl@linux.ibm.com>
Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Stable-dep-of: e8061f06185b ("KVM: s390: gaccess: Check if guest address is in memslot")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:50 +01:00
Mark Rutland
e6ab336213 arm64: probes: Fix uprobes for big-endian kernels
[ Upstream commit 13f8f1e05f1dc36dbba6cba0ae03354c0dafcde7 ]

The arm64 uprobes code is broken for big-endian kernels as it doesn't
convert the in-memory instruction encoding (which is always
little-endian) into the kernel's native endianness before analyzing and
simulating instructions. This may result in a few distinct problems:

* The kernel may may erroneously reject probing an instruction which can
  safely be probed.

* The kernel may erroneously erroneously permit stepping an
  instruction out-of-line when that instruction cannot be stepped
  out-of-line safely.

* The kernel may erroneously simulate instruction incorrectly dur to
  interpretting the byte-swapped encoding.

The endianness mismatch isn't caught by the compiler or sparse because:

* The arch_uprobe::{insn,ixol} fields are encoded as arrays of u8, so
  the compiler and sparse have no idea these contain a little-endian
  32-bit value. The core uprobes code populates these with a memcpy()
  which similarly does not handle endianness.

* While the uprobe_opcode_t type is an alias for __le32, both
  arch_uprobe_analyze_insn() and arch_uprobe_skip_sstep() cast from u8[]
  to the similarly-named probe_opcode_t, which is an alias for u32.
  Hence there is no endianness conversion warning.

Fix this by changing the arch_uprobe::{insn,ixol} fields to __le32 and
adding the appropriate __le32_to_cpu() conversions prior to consuming
the instruction encoding. The core uprobes copies these fields as opaque
ranges of bytes, and so is unaffected by this change.

At the same time, remove MAX_UINSN_BYTES and consistently use
AARCH64_INSN_SIZE for clarity.

Tested with the following:

| #include <stdio.h>
| #include <stdbool.h>
|
| #define noinline __attribute__((noinline))
|
| static noinline void *adrp_self(void)
| {
|         void *addr;
|
|         asm volatile(
|         "       adrp    %x0, adrp_self\n"
|         "       add     %x0, %x0, :lo12:adrp_self\n"
|         : "=r" (addr));
| }
|
|
| int main(int argc, char *argv)
| {
|         void *ptr = adrp_self();
|         bool equal = (ptr == adrp_self);
|
|         printf("adrp_self   => %p\n"
|                "adrp_self() => %p\n"
|                "%s\n",
|                adrp_self, ptr, equal ? "EQUAL" : "NOT EQUAL");
|
|         return 0;
| }

.... where the adrp_self() function was compiled to:

| 00000000004007e0 <adrp_self>:
|   4007e0:       90000000        adrp    x0, 400000 <__ehdr_start>
|   4007e4:       911f8000        add     x0, x0, #0x7e0
|   4007e8:       d65f03c0        ret

Before this patch, the ADRP is not recognized, and is assumed to be
steppable, resulting in corruption of the result:

| # ./adrp-self
| adrp_self   => 0x4007e0
| adrp_self() => 0x4007e0
| EQUAL
| # echo 'p /root/adrp-self:0x007e0' > /sys/kernel/tracing/uprobe_events
| # echo 1 > /sys/kernel/tracing/events/uprobes/enable
| # ./adrp-self
| adrp_self   => 0x4007e0
| adrp_self() => 0xffffffffff7e0
| NOT EQUAL

After this patch, the ADRP is correctly recognized and simulated:

| # ./adrp-self
| adrp_self   => 0x4007e0
| adrp_self() => 0x4007e0
| EQUAL
| #
| # echo 'p /root/adrp-self:0x007e0' > /sys/kernel/tracing/uprobe_events
| # echo 1 > /sys/kernel/tracing/events/uprobes/enable
| # ./adrp-self
| adrp_self   => 0x4007e0
| adrp_self() => 0x4007e0
| EQUAL

Fixes: 9842ceae9f ("arm64: Add uprobe support")
Cc: stable@vger.kernel.org
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20241008155851.801546-4-mark.rutland@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-08 16:20:50 +01:00