laptop-kernel/drivers/net, branch master

net: usb: lan78xx: fix use of improperly initialized dev->chipid in lan78xx_reset

2025-10-23T14:24:32Z

[ Upstream commit 8d93ff40d49d70e05c82a74beae31f883fe0eaf8 ] dev->chipid is used in lan78xx_init_mac_address before it's initialized: lan78xx_reset() { lan78xx_init_mac_address() lan78xx_read_eeprom() lan78xx_read_raw_eeprom() <- dev->chipid is used here dev->chipid = ... <- dev->chipid is initialized correctly here } Reorder initialization so that dev->chipid is set before calling lan78xx_init_mac_address(). Fixes: a0db7d10b76e ("lan78xx: Add to handle mux control per chip id") Signed-off-by: I Viswanath Reviewed-by: Vadim Fedorenko Reviewed-by: Khalid Aziz Link: https://patch.msgid.link/20251013181648.35153-1-viswanathiyyappan@gmail.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin

netdevsim: set the carrier when the device goes up

2025-10-23T14:24:31Z

[ Upstream commit 1a8fed52f7be14e45785e8e54d0d0b50fc17dbd8 ] Bringing a linked netdevsim device down and then up causes communication failure because both interfaces lack carrier. Basically a ifdown/ifup on the interface make the link broken. Commit 3762ec05a9fbda ("netdevsim: add NAPI support") added supported for NAPI, calling netif_carrier_off() in nsim_stop(). This patch re-enables the carrier symmetrically on nsim_open(), in case the device is linked and the peer is up. Signed-off-by: Breno Leitao Fixes: 3762ec05a9fbda ("netdevsim: add NAPI support") Reviewed-by: Andrew Lunn Link: https://patch.msgid.link/20251014-netdevsim_fix-v2-1-53b40590dae1@debian.org Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin

tg3: prevent use of uninitialized remote_adv and local_adv variables

2025-10-23T14:24:31Z

[ Upstream commit 0c3f2e62815a43628e748b1e4ad97a1c46cce703 ] Some execution paths that jump to the fiber_setup_done label could leave the remote_adv and local_adv variables uninitialized and then use it. Initialize this variables at the point of definition to avoid this. Fixes: 85730a631f0c ("tg3: Add SGMII phy support for 5719/5718 serdes") Co-developed-by: Alexandr Sapozhnikov Signed-off-by: Alexandr Sapozhnikov Signed-off-by: Alexey Simakov Reviewed-by: Pavan Chebbi Link: https://patch.msgid.link/20251014164736.5890-1-bigalex934@gmail.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin

net: airoha: Take into account out-of-order tx completions in airoha_dev_xmit()

2025-10-23T14:24:30Z

[ Upstream commit bd5afca115f181c85f992d42a57cd497bc823ccb ] Completion napi can free out-of-order tx descriptors if hw QoS is enabled and packets with different priority are queued to same DMA ring. Take into account possible out-of-order reports checking if the tx queue is full using circular buffer head/tail pointer instead of the number of queued packets. Fixes: 23020f0493270 ("net: airoha: Introduce ethernet support for EN7581 SoC") Suggested-by: Simon Horman Signed-off-by: Lorenzo Bianconi Reviewed-by: Simon Horman Link: https://patch.msgid.link/20251012-airoha-tx-busy-queue-v2-1-a600b08bab2d@kernel.org Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin

usbnet: Fix using smp_processor_id() in preemptible code warnings

2025-10-23T14:24:30Z

[ Upstream commit 327cd4b68b4398b6c24f10eb2b2533ffbfc10185 ] Syzbot reported the following warning: BUG: using smp_processor_id() in preemptible [00000000] code: dhcpcd/2879 caller is usbnet_skb_return+0x74/0x490 drivers/net/usb/usbnet.c:331 CPU: 1 UID: 0 PID: 2879 Comm: dhcpcd Not tainted 6.15.0-rc4-syzkaller-00098-g615dca38c2ea #0 PREEMPT(voluntary) Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:120 check_preemption_disabled+0xd0/0xe0 lib/smp_processor_id.c:49 usbnet_skb_return+0x74/0x490 drivers/net/usb/usbnet.c:331 usbnet_resume_rx+0x4b/0x170 drivers/net/usb/usbnet.c:708 usbnet_change_mtu+0x1be/0x220 drivers/net/usb/usbnet.c:417 __dev_set_mtu net/core/dev.c:9443 [inline] netif_set_mtu_ext+0x369/0x5c0 net/core/dev.c:9496 netif_set_mtu+0xb0/0x160 net/core/dev.c:9520 dev_set_mtu+0xae/0x170 net/core/dev_api.c:247 dev_ifsioc+0xa31/0x18d0 net/core/dev_ioctl.c:572 dev_ioctl+0x223/0x10e0 net/core/dev_ioctl.c:821 sock_do_ioctl+0x19d/0x280 net/socket.c:1204 sock_ioctl+0x42f/0x6a0 net/socket.c:1311 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __x64_sys_ioctl+0x190/0x200 fs/ioctl.c:892 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f For historical and portability reasons, the netif_rx() is usually run in the softirq or interrupt context, this commit therefore add local_bh_disable/enable() protection in the usbnet_resume_rx(). Fixes: 43daa96b166c ("usbnet: Stop RX Q on MTU change") Link: https://syzkaller.appspot.com/bug?id=81f55dfa587ee544baaaa5a359a060512228c1e1 Suggested-by: Jakub Kicinski Signed-off-by: Zqiang Link: https://patch.msgid.link/20251011070518.7095-1-qiang.zhang@linux.dev Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin

Octeontx2-af: Fix missing error code in cgx_probe()

2025-10-23T14:24:30Z

[ Upstream commit c5705a2a4aa35350e504b72a94b5c71c3754833c ] When CGX fails mapping to NIX, set the error code to -ENODEV, currently err is zero and that is treated as success path. Reported-by: Dan Carpenter Closes: https://lore.kernel.org/all/aLAdlCg2_Yv7Y-3h@stanley.mountain/ Fixes: d280233fc866 ("Octeontx2-af: Fix NIX X2P calibration failures") Signed-off-by: Harshit Mogalapalli Reviewed-by: Simon Horman Link: https://patch.msgid.link/20251010204239.94237-1-harshit.m.mogalapalli@oracle.com Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin

amd-xgbe: Avoid spurious link down messages during interface toggle

2025-10-23T14:24:30Z

[ Upstream commit 2616222e423398bb374ffcb5d23dea4ba2c3e524 ] During interface toggle operations (ifdown/ifup), the driver currently resets the local helper variable 'phy_link' to -1. This causes the link state machine to incorrectly interpret the state as a link change event, resulting in spurious "Link is down" messages being logged when the interface is brought back up. Preserve the phy_link state across interface toggles to avoid treating the -1 sentinel value as a legitimate link state transition. Fixes: 88131a812b16 ("amd-xgbe: Perform phy connect/disconnect at dev open/stop") Signed-off-by: Raju Rangoju Reviewed-by: Dawid Osuchowski Link: https://patch.msgid.link/20251010065142.1189310-1-Raju.Rangoju@amd.com Signed-off-by: Paolo Abeni Signed-off-by: Sasha Levin

net: phy: realtek: Avoid PHYCR2 access if PHYCR2 not present

2025-10-23T14:24:30Z

[ Upstream commit 2c67301584f2671e320236df6bbe75ae09feb4d0 ] The driver is currently checking for PHYCR2 register presence in rtl8211f_config_init(), but it does so after accessing PHYCR2 to disable EEE. This was introduced in commit bfc17c165835 ("net: phy: realtek: disable PHY-mode EEE"). Move the PHYCR2 presence test before the EEE disablement and simplify the code. Fixes: bfc17c165835 ("net: phy: realtek: disable PHY-mode EEE") Signed-off-by: Marek Vasut Reviewed-by: Maxime Chevallier Reviewed-by: Russell King (Oracle) Link: https://patch.msgid.link/20251011110309.12664-1-marek.vasut@mailbox.org Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin

ixgbe: fix too early devlink_free() in ixgbe_remove()

2025-10-23T14:24:29Z

[ Upstream commit 5feef67b646d8f5064bac288e22204ffba2b9a4a ] Since ixgbe_adapter is embedded in devlink, calling devlink_free() prematurely in the ixgbe_remove() path can lead to UAF. Move devlink_free() to the end. KASAN report: BUG: KASAN: use-after-free in ixgbe_reset_interrupt_capability+0x140/0x180 [ixgbe] Read of size 8 at addr ffff0000adf813e0 by task bash/2095 CPU: 1 UID: 0 PID: 2095 Comm: bash Tainted: G S 6.17.0-rc2-tnguy.net-queue+ #1 PREEMPT(full) [...] Call trace: show_stack+0x30/0x90 (C) dump_stack_lvl+0x9c/0xd0 print_address_description.constprop.0+0x90/0x310 print_report+0x104/0x1f0 kasan_report+0x88/0x180 __asan_report_load8_noabort+0x20/0x30 ixgbe_reset_interrupt_capability+0x140/0x180 [ixgbe] ixgbe_clear_interrupt_scheme+0xf8/0x130 [ixgbe] ixgbe_remove+0x2d0/0x8c0 [ixgbe] pci_device_remove+0xa0/0x220 device_remove+0xb8/0x170 device_release_driver_internal+0x318/0x490 device_driver_detach+0x40/0x68 unbind_store+0xec/0x118 drv_attr_store+0x64/0xb8 sysfs_kf_write+0xcc/0x138 kernfs_fop_write_iter+0x294/0x440 new_sync_write+0x1fc/0x588 vfs_write+0x480/0x6a0 ksys_write+0xf0/0x1e0 __arm64_sys_write+0x70/0xc0 invoke_syscall.constprop.0+0xcc/0x280 el0_svc_common.constprop.0+0xa8/0x248 do_el0_svc+0x44/0x68 el0_svc+0x54/0x160 el0t_64_sync_handler+0xa0/0xe8 el0t_64_sync+0x1b0/0x1b8 Fixes: a0285236ab93 ("ixgbe: add initial devlink support") Signed-off-by: Koichiro Den Tested-by: Rinitha S Reviewed-by: Jedrzej Jagielski Reviewed-by: Aleksandr Loktionov Reviewed-by: Paul Menzel Signed-off-by: Jacob Keller Link: https://patch.msgid.link/20251009-jk-iwl-net-2025-10-01-v3-6-ef32a425b92a@intel.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin

idpf: cleanup remaining SKBs in PTP flows

2025-10-23T14:24:29Z

[ Upstream commit a3f8c0a273120fd2638f03403e786c3de2382e72 ] When the driver requests Tx timestamp value, one of the first steps is to clone SKB using skb_get. It increases the reference counter for that SKB to prevent unexpected freeing by another component. However, there may be a case where the index is requested, SKB is assigned and never consumed by PTP flows - for example due to reset during running PTP apps. Add a check in release timestamping function to verify if the SKB assigned to Tx timestamp latch was freed, and release remaining SKBs. Fixes: 4901e83a94ef ("idpf: add Tx timestamp capabilities negotiation") Signed-off-by: Milena Olech Signed-off-by: Anton Nadezhdin Reviewed-by: Aleksandr Loktionov Tested-by: Samuel Salin Signed-off-by: Jacob Keller Link: https://patch.msgid.link/20251009-jk-iwl-net-2025-10-01-v3-1-ef32a425b92a@intel.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin