kernel/linux.git/drivers, branch v4.19.310

hv_netvsc: Register VF in netvsc_probe if NET_DEVICE_REGISTER missed

2024-03-15T14:48:17+00:00

[ Upstream commit 9cae43da9867412f8bd09aee5c8a8dc5e8dc3dc2 ] If hv_netvsc driver is unloaded and reloaded, the NET_DEVICE_REGISTER handler cannot perform VF register successfully as the register call is received before netvsc_probe is finished. This is because we register register_netdevice_notifier() very early( even before vmbus_driver_register()). To fix this, we try to register each such matching VF( if it is visible as a netdevice) at the end of netvsc_probe. Cc: stable@vger.kernel.org Fixes: 85520856466e ("hv_netvsc: Fix race of register_netdevice_notifier and VF register") Suggested-by: Dexuan Cui Signed-off-by: Shradha Gupta Reviewed-by: Haiyang Zhang Reviewed-by: Dexuan Cui Signed-off-by: David S. Miller Signed-off-by: Sasha Levin

hv_netvsc: use netif_is_bond_master() instead of open code

2024-03-15T14:48:17+00:00

[ Upstream commit c60882a4566a0a62dc3a40c85131103aad83dcb3 ] Use netif_is_bond_master() function instead of open code, which is ((event_dev->priv_flags & IFF_BONDING) && (event_dev->flags & IFF_MASTER)). This patch doesn't change logic. Signed-off-by: Juhee Kang Signed-off-by: David S. Miller Stable-dep-of: 9cae43da9867 ("hv_netvsc: Register VF in netvsc_probe if NET_DEVICE_REGISTER missed") Signed-off-by: Sasha Levin

hv_netvsc: Make netvsc/VF binding check both MAC and serial number

2024-03-15T14:48:17+00:00

[ Upstream commit 64ff412ad41fe3a5bf759ff4844dc1382176485c ] Currently the netvsc/VF binding logic only checks the PCI serial number. The Microsoft Azure Network Adapter (MANA) supports multiple net_device interfaces (each such interface is called a "vPort", and has its unique MAC address) which are backed by the same VF PCI device, so the binding logic should check both the MAC address and the PCI serial number. The change should not break any other existing VF drivers, because Hyper-V NIC SR-IOV implementation requires the netvsc network interface and the VF network interface have the same MAC address. Co-developed-by: Haiyang Zhang Signed-off-by: Haiyang Zhang Co-developed-by: Shachar Raindel Signed-off-by: Shachar Raindel Acked-by: Stephen Hemminger Signed-off-by: Dexuan Cui Signed-off-by: David S. Miller Stable-dep-of: 9cae43da9867 ("hv_netvsc: Register VF in netvsc_probe if NET_DEVICE_REGISTER missed") Signed-off-by: Sasha Levin

Input: i8042 - fix strange behavior of touchpad on Clevo NS70PU

2024-03-15T14:48:17+00:00

[ Upstream commit a60e6c3918d20848906ffcdfcf72ca6a8cfbcf2e ] When closing the laptop lid with an external screen connected, the mouse pointer has a constant movement to the lower right corner. Opening the lid again stops this movement, but after that the touchpad does no longer register clicks. The touchpad is connected both via i2c-hid and PS/2, the predecessor of this device (NS70MU) has the same layout in this regard and also strange behaviour caused by the psmouse and the i2c-hid driver fighting over touchpad control. This fix is reusing the same workaround by just disabling the PS/2 aux port, that is only used by the touchpad, to give the i2c-hid driver the lone control over the touchpad. v2: Rebased on current master Signed-off-by: Werner Sembach Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20231205163602.16106-1-wse@tuxedocomputers.com Signed-off-by: Dmitry Torokhov Signed-off-by: Sasha Levin

geneve: make sure to pull inner header in geneve_rx()

2024-03-15T14:48:14+00:00

[ Upstream commit 1ca1ba465e55b9460e4e75dec9fff31e708fec74 ] syzbot triggered a bug in geneve_rx() [1] Issue is similar to the one I fixed in commit 8d975c15c0cd ("ip6_tunnel: make sure to pull inner header in __ip6_tnl_rcv()") We have to save skb->network_header in a temporary variable in order to be able to recompute the network_header pointer after a pskb_inet_may_pull() call. pskb_inet_may_pull() makes sure the needed headers are in skb->head. [1] BUG: KMSAN: uninit-value in IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline] BUG: KMSAN: uninit-value in geneve_rx drivers/net/geneve.c:279 [inline] BUG: KMSAN: uninit-value in geneve_udp_encap_recv+0x36f9/0x3c10 drivers/net/geneve.c:391 IP_ECN_decapsulate include/net/inet_ecn.h:302 [inline] geneve_rx drivers/net/geneve.c:279 [inline] geneve_udp_encap_recv+0x36f9/0x3c10 drivers/net/geneve.c:391 udp_queue_rcv_one_skb+0x1d39/0x1f20 net/ipv4/udp.c:2108 udp_queue_rcv_skb+0x6ae/0x6e0 net/ipv4/udp.c:2186 udp_unicast_rcv_skb+0x184/0x4b0 net/ipv4/udp.c:2346 __udp4_lib_rcv+0x1c6b/0x3010 net/ipv4/udp.c:2422 udp_rcv+0x7d/0xa0 net/ipv4/udp.c:2604 ip_protocol_deliver_rcu+0x264/0x1300 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2b8/0x440 net/ipv4/ip_input.c:233 NF_HOOK include/linux/netfilter.h:314 [inline] ip_local_deliver+0x21f/0x490 net/ipv4/ip_input.c:254 dst_input include/net/dst.h:461 [inline] ip_rcv_finish net/ipv4/ip_input.c:449 [inline] NF_HOOK include/linux/netfilter.h:314 [inline] ip_rcv+0x46f/0x760 net/ipv4/ip_input.c:569 __netif_receive_skb_one_core net/core/dev.c:5534 [inline] __netif_receive_skb+0x1a6/0x5a0 net/core/dev.c:5648 process_backlog+0x480/0x8b0 net/core/dev.c:5976 __napi_poll+0xe3/0x980 net/core/dev.c:6576 napi_poll net/core/dev.c:6645 [inline] net_rx_action+0x8b8/0x1870 net/core/dev.c:6778 __do_softirq+0x1b7/0x7c5 kernel/softirq.c:553 do_softirq+0x9a/0xf0 kernel/softirq.c:454 __local_bh_enable_ip+0x9b/0xa0 kernel/softirq.c:381 local_bh_enable include/linux/bottom_half.h:33 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:820 [inline] __dev_queue_xmit+0x2768/0x51c0 net/core/dev.c:4378 dev_queue_xmit include/linux/netdevice.h:3171 [inline] packet_xmit+0x9c/0x6b0 net/packet/af_packet.c:276 packet_snd net/packet/af_packet.c:3081 [inline] packet_sendmsg+0x8aef/0x9f10 net/packet/af_packet.c:3113 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] __sys_sendto+0x735/0xa10 net/socket.c:2191 __do_sys_sendto net/socket.c:2203 [inline] __se_sys_sendto net/socket.c:2199 [inline] __x64_sys_sendto+0x125/0x1c0 net/socket.c:2199 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit was created at: slab_post_alloc_hook mm/slub.c:3819 [inline] slab_alloc_node mm/slub.c:3860 [inline] kmem_cache_alloc_node+0x5cb/0xbc0 mm/slub.c:3903 kmalloc_reserve+0x13d/0x4a0 net/core/skbuff.c:560 __alloc_skb+0x352/0x790 net/core/skbuff.c:651 alloc_skb include/linux/skbuff.h:1296 [inline] alloc_skb_with_frags+0xc8/0xbd0 net/core/skbuff.c:6394 sock_alloc_send_pskb+0xa80/0xbf0 net/core/sock.c:2783 packet_alloc_skb net/packet/af_packet.c:2930 [inline] packet_snd net/packet/af_packet.c:3024 [inline] packet_sendmsg+0x70c2/0x9f10 net/packet/af_packet.c:3113 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] __sys_sendto+0x735/0xa10 net/socket.c:2191 __do_sys_sendto net/socket.c:2203 [inline] __se_sys_sendto net/socket.c:2199 [inline] __x64_sys_sendto+0x125/0x1c0 net/socket.c:2199 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcf/0x1e0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Fixes: 2d07dc79fe04 ("geneve: add initial netdev driver for GENEVE tunnels") Reported-and-tested-by: syzbot+6a1423ff3f97159aae64@syzkaller.appspotmail.com Signed-off-by: Eric Dumazet Reviewed-by: Jiri Pirko Signed-off-by: David S. Miller Signed-off-by: Sasha Levin

net: move definition of pcpu_lstats to header file

2024-03-15T14:48:14+00:00

[ Upstream commit 52bb6677d530d37055092d86b4eab69dce6c166a ] pcpu_lstats is defined in several files, so unify them as one and move to header file Signed-off-by: Zhang Yu Signed-off-by: Li RongQing Signed-off-by: David S. Miller Stable-dep-of: 1ca1ba465e55 ("geneve: make sure to pull inner header in geneve_rx()") Signed-off-by: Sasha Levin

net: lan78xx: fix runtime PM count underflow on link stop

2024-03-15T14:48:14+00:00

[ Upstream commit 1eecc7ab82c42133b748e1895275942a054a7f67 ] Current driver has some asymmetry in the runtime PM calls. On lan78xx_open() it will call usb_autopm_get() and unconditionally usb_autopm_put(). And on lan78xx_stop() it will call only usb_autopm_put(). So far, it was working only because this driver do not activate autosuspend by default, so it was visible only by warning "Runtime PM usage count underflow!". Since, with current driver, we can't use runtime PM with active link, execute lan78xx_open()->usb_autopm_put() only in error case. Otherwise, keep ref counting high as long as interface is open. Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver") Signed-off-by: Oleksij Rempel Reviewed-by: Jiri Pirko Signed-off-by: David S. Miller Signed-off-by: Sasha Levin

lan78xx: Fix race conditions in suspend/resume handling

2024-03-15T14:48:14+00:00

[ Upstream commit 5f4cc6e25148cc141f97afb41b4dfe9eb1cce613 ] If the interface is given an IP address while the device is suspended (as a result of an auto-suspend event) there is a race between lan78xx_resume() and lan78xx_open() that can result in an exception or failure to handle incoming packets. The following changes fix this problem. Introduce a mutex to serialise operations in the network interface open and stop entry points with respect to the USB driver suspend and resume entry points. Move Tx and Rx data path start/stop to lan78xx_start() and lan78xx_stop() respectively and flush the packet FIFOs before starting the Tx and Rx data paths. This prevents the MAC and FIFOs getting out of step and delivery of malformed packets to the network stack. Stop processing of received packets before disconnecting the PHY from the MAC to prevent a kernel exception caused by handling packets after the PHY device has been removed. Refactor device auto-suspend code to make it consistent with the the system suspend code and make the suspend handler easier to read. Add new code to stop wake-on-lan packets or PHY events resuming the host or device from suspend if the device has not been opened (typically after an IP address is assigned). This patch is dependent on changes to lan78xx_suspend() and lan78xx_resume() introduced in the previous patch of this patch set. Signed-off-by: John Efstathiades Signed-off-by: David S. Miller Stable-dep-of: 1eecc7ab82c4 ("net: lan78xx: fix runtime PM count underflow on link stop") Signed-off-by: Sasha Levin

lan78xx: Fix partial packet errors on suspend/resume

2024-03-15T14:48:13+00:00

[ Upstream commit e1210fe63bf8b080edd0805240e90b81b6b069c1 ] The MAC can get out of step with the internal packet FIFOs if the system goes to sleep when the link is active, especially at high data rates. This can result in partial frames in the packet FIFOs that in result in malformed frames being delivered to the host. This occurs because the driver does not enable/disable the internal packet FIFOs in step with the corresponding MAC data path. The following changes fix this problem. Update code that enables/disables the MAC receiver and transmitter to the more general Rx and Tx data path, where the data path in each direction consists of both the MAC function (Tx or Rx) and the corresponding packet FIFO. In the receive path the packet FIFO must be enabled before the MAC receiver but disabled after the MAC receiver. In the transmit path the opposite is true: the packet FIFO must be enabled after the MAC transmitter but disabled before the MAC transmitter. The packet FIFOs can be flushed safely once the corresponding data path is stopped. Signed-off-by: John Efstathiades Signed-off-by: David S. Miller Stable-dep-of: 1eecc7ab82c4 ("net: lan78xx: fix runtime PM count underflow on link stop") Signed-off-by: Sasha Levin

lan78xx: Add missing return code checks

2024-03-15T14:48:13+00:00

[ Upstream commit 3415f6baaddb9b39d7112247ab39ef3c700f882e ] There are many places in the driver where the return code from a function call is captured but without a subsequent test of the return code and appropriate action taken. This patch adds the missing return code tests and action. In most cases the action is an early exit from the calling function. The function lan78xx_set_suspend() was also updated to make it consistent with lan78xx_suspend(). Signed-off-by: John Efstathiades Signed-off-by: David S. Miller Stable-dep-of: 1eecc7ab82c4 ("net: lan78xx: fix runtime PM count underflow on link stop") Signed-off-by: Sasha Levin