kernel/linux.git, branch v5.10.13

Linux 5.10.13

2021-02-03T22:28:52+00:00

Tested-by: Pavel Machek (CIP) Tested-by: Jon Hunter Tested-by: Linux Kernel Functional Testing Tested-by: Shuah Khan Tested-by: Guenter Roeck Link: https://lore.kernel.org/r/20210202132957.692094111@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman

vsock: fix the race conditions in multi-transport support

2021-02-03T22:28:52+00:00

commit c518adafa39f37858697ac9309c6cf1805581446 upstream. There are multiple similar bugs implicitly introduced by the commit c0cfa2d8a788fcf4 ("vsock: add multi-transports support") and commit 6a2c0962105ae8ce ("vsock: prevent transport modules unloading"). The bug pattern: [1] vsock_sock.transport pointer is copied to a local variable, [2] lock_sock() is called, [3] the local variable is used. VSOCK multi-transport support introduced the race condition: vsock_sock.transport value may change between [1] and [2]. Let's copy vsock_sock.transport pointer to local variables after the lock_sock() call. Fixes: c0cfa2d8a788fcf4 ("vsock: add multi-transports support") Signed-off-by: Alexander Popov Reviewed-by: Stefano Garzarella Reviewed-by: Jorgen Hansen Link: https://lore.kernel.org/r/20210201084719.2257066-1-alex.popov@linux.com Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman

tcp: fix TLP timer not set when CA_STATE changes from DISORDER to OPEN

2021-02-03T22:28:52+00:00

commit 62d9f1a6945ba69c125e548e72a36d203b30596e upstream. Upon receiving a cumulative ACK that changes the congestion state from Disorder to Open, the TLP timer is not set. If the sender is app-limited, it can only wait for the RTO timer to expire and retransmit. The reason for this is that the TLP timer is set before the congestion state changes in tcp_ack(), so we delay the time point of calling tcp_set_xmit_timer() until after tcp_fastretrans_alert() returns and remove the FLAG_SET_XMIT_TIMER from ack_flag when the RACK reorder timer is set. This commit has two additional benefits: 1) Make sure to reset RTO according to RFC6298 when receiving ACK, to avoid spurious RTO caused by RTO timer early expires. 2) Reduce the xmit timer reschedule once per ACK when the RACK reorder timer is set. Fixes: df92c8394e6e ("tcp: fix xmit timer to only be reset if data ACKed/SACKed") Link: https://lore.kernel.org/netdev/1611311242-6675-1-git-send-email-yangpc@wangsu.com Signed-off-by: Pengcheng Yang Acked-by: Neal Cardwell Acked-by: Yuchung Cheng Cc: Eric Dumazet Link: https://lore.kernel.org/r/1611464834-23030-1-git-send-email-yangpc@wangsu.com Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman

tcp: make TCP_USER_TIMEOUT accurate for zero window probes

2021-02-03T22:28:51+00:00

commit 344db93ae3ee69fc137bd6ed89a8ff1bf5b0db08 upstream. The TCP_USER_TIMEOUT is checked by the 0-window probe timer. As the timer has backoff with a max interval of about two minutes, the actual timeout for TCP_USER_TIMEOUT can be off by up to two minutes. In this patch the TCP_USER_TIMEOUT is made more accurate by taking it into account when computing the timer value for the 0-window probes. This patch is similar to and builds on top of the one that made TCP_USER_TIMEOUT accurate for RTOs in commit b701a99e431d ("tcp: Add tcp_clamp_rto_to_user_timeout() helper to improve accuracy"). Fixes: 9721e709fa68 ("tcp: simplify window probe aborting on USER_TIMEOUT") Signed-off-by: Enke Chen Reviewed-by: Neal Cardwell Signed-off-by: Eric Dumazet Link: https://lore.kernel.org/r/20210122191306.GA99540@localhost.localdomain Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman

team: protect features update by RCU to avoid deadlock

2021-02-03T22:28:51+00:00

commit f0947d0d21b219e03940b9be6628a43445c0de7a upstream. Function __team_compute_features() is protected by team->lock mutex when it is called from team_compute_features() used when features of an underlying device is changed. This causes a deadlock when NETDEV_FEAT_CHANGE notifier for underlying device is fired due to change propagated from team driver (e.g. MTU change). It's because callbacks like team_change_mtu() or team_vlan_rx_{add,del}_vid() protect their port list traversal by team->lock mutex. Example (r8169 case where this driver disables TSO for certain MTU values): ... [ 6391.348202] __mutex_lock.isra.6+0x2d0/0x4a0 [ 6391.358602] team_device_event+0x9d/0x160 [team] [ 6391.363756] notifier_call_chain+0x47/0x70 [ 6391.368329] netdev_update_features+0x56/0x60 [ 6391.373207] rtl8169_change_mtu+0x14/0x50 [r8169] [ 6391.378457] dev_set_mtu_ext+0xe1/0x1d0 [ 6391.387022] dev_set_mtu+0x52/0x90 [ 6391.390820] team_change_mtu+0x64/0xf0 [team] [ 6391.395683] dev_set_mtu_ext+0xe1/0x1d0 [ 6391.399963] do_setlink+0x231/0xf50 ... In fact team_compute_features() called from team_device_event() does not need to be protected by team->lock mutex and rcu_read_lock() is sufficient there for port list traversal. Fixes: 3d249d4ca7d0 ("net: introduce ethernet teaming device") Cc: Saeed Mahameed Signed-off-by: Ivan Vecera Reviewed-by: Cong Wang Reviewed-by: Jiri Pirko Link: https://lore.kernel.org/r/20210125074416.4056484-1-ivecera@redhat.com Signed-off-by: Jakub Kicinski Signed-off-by: Greg Kroah-Hartman

scsi: qla2xxx: Fix description for parameter ql2xenforce_iocb_limit

2021-02-03T22:28:51+00:00

commit aa2c24e7f415e9c13635cee22ff4e15a80215551 upstream. Parameter ql2xenforce_iocb_limit is enabled by default. Link: https://lore.kernel.org/r/20210118184922.23793-1-ematsumiya@suse.de Fixes: 89c72f4245a8 ("scsi: qla2xxx: Add IOCB resource tracking") Reviewed-by: Daniel Wagner Reviewed-by: Himanshu Madhani Signed-off-by: Enzo Matsumiya Signed-off-by: Martin K. Petersen Signed-off-by: Greg Kroah-Hartman

ASoC: topology: Fix memory corruption in soc_tplg_denum_create_values()

2021-02-03T22:28:51+00:00

commit 543466ef3571069b8eb13a8ff7c7cfc8d8a75c43 upstream. The allocation uses sizeof(u32) when it should use sizeof(unsigned long) so it leads to memory corruption later in the function when the data is initialized. Fixes: 5aebe7c7f9c2 ("ASoC: topology: fix endianness issues") Signed-off-by: Dan Carpenter Link: https://lore.kernel.org/r/YAf+8QZoOv+ct526@mwanda Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman

ASoC: topology: Properly unregister DAI on removal

2021-02-03T22:28:51+00:00

commit fc4cb1e15f0c66f2e37314349dc4a82bd946fbb1 upstream. DAIs need to be removed when topology unload function is called (usually done when component is being removed). We can't do this when device is being removed, as structures we operate on when removing DAI can already be freed. Fixes: 6ae4902f2f34 ("ASoC: soc-topology: use devm_snd_soc_register_dai()") Signed-off-by: Amadeusz Sławiński Tested-by: Pierre-Louis Bossart Link: https://lore.kernel.org/r/20210120152846.1703655-2-amadeuszx.slawinski@linux.intel.com Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman

ASoC: mediatek: mt8183-mt6358: ignore TDM DAI link by default

2021-02-03T22:28:51+00:00

commit 5ac154443e686b06242aa49de30a12b74ea9ca98 upstream. hdmi-codec is an optional property. Ignore to bind TDM DAI link if the property isn't specified. Fixes: f2024dc55fcb ("ASoC: mediatek: mt8183: use hdmi-codec") Signed-off-by: Tzung-Bi Shih Link: https://lore.kernel.org/r/20210120092237.1553938-2-tzungbi@google.com Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman

ASoC: mediatek: mt8183-da7219: ignore TDM DAI link by default

2021-02-03T22:28:51+00:00

commit 4d36ed8eb0f749c9e781e0d3b041a7adeedcdaa9 upstream. hdmi-codec is an optional property. Ignore to bind TDM DAI link if the property isn't specified. Fixes: 5bdbe9771177 ("ASoC: mediatek: mt8183-da7219: use hdmi-codec") Signed-off-by: Tzung-Bi Shih Link: https://lore.kernel.org/r/20210120092237.1553938-3-tzungbi@google.com Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman