diff options
Diffstat (limited to 'target/linux/generic/backport-5.10/775-v5.18-04-net-phy-at803x-fix-NULL-pointer-dereference-on-AR9331-PHY.patch')
| -rw-r--r-- | target/linux/generic/backport-5.10/775-v5.18-04-net-phy-at803x-fix-NULL-pointer-dereference-on-AR9331-PHY.patch | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.10/775-v5.18-04-net-phy-at803x-fix-NULL-pointer-dereference-on-AR9331-PHY.patch b/target/linux/generic/backport-5.10/775-v5.18-04-net-phy-at803x-fix-NULL-pointer-dereference-on-AR9331-PHY.patch new file mode 100644 index 0000000000..61fe3d259d --- /dev/null +++ b/target/linux/generic/backport-5.10/775-v5.18-04-net-phy-at803x-fix-NULL-pointer-dereference-on-AR9331-PHY.patch @@ -0,0 +1,56 @@ +From 9926de7315be3d606cc011a305ad9adb9e8e14c9 Mon Sep 17 00:00:00 2001 +From: Oleksij Rempel <o.rempel@pengutronix.de> +Date: Sat, 18 Jun 2022 14:23:33 +0200 +Subject: [PATCH] net: phy: at803x: fix NULL pointer dereference on AR9331 PHY + +Latest kernel will explode on the PHY interrupt config, since it depends +now on allocated priv. So, run probe to allocate priv to fix it. + + ar9331_switch ethernet.1:10 lan0 (uninitialized): PHY [!ahb!ethernet@1a000000!mdio!switch@10:00] driver [Qualcomm Atheros AR9331 built-in PHY] (irq=13) + CPU 0 Unable to handle kernel paging request at virtual address 0000000a, epc == 8050e8a8, ra == 80504b34 + ... + Call Trace: + [<8050e8a8>] at803x_config_intr+0x5c/0xd0 + [<80504b34>] phy_request_interrupt+0xa8/0xd0 + [<8050289c>] phylink_bringup_phy+0x2d8/0x3ac + [<80502b68>] phylink_fwnode_phy_connect+0x118/0x130 + [<8074d8ec>] dsa_slave_create+0x270/0x420 + [<80743b04>] dsa_port_setup+0x12c/0x148 + [<8074580c>] dsa_register_switch+0xaf0/0xcc0 + [<80511344>] ar9331_sw_probe+0x370/0x388 + [<8050cb78>] mdio_probe+0x44/0x70 + [<804df300>] really_probe+0x200/0x424 + [<804df7b4>] __driver_probe_device+0x290/0x298 + [<804df810>] driver_probe_device+0x54/0xe4 + [<804dfd50>] __device_attach_driver+0xe4/0x130 + [<804dcb00>] bus_for_each_drv+0xb4/0xd8 + [<804dfac4>] __device_attach+0x104/0x1a4 + [<804ddd24>] bus_probe_device+0x48/0xc4 + [<804deb44>] deferred_probe_work_func+0xf0/0x10c + [<800a0ffc>] process_one_work+0x314/0x4d4 + [<800a17fc>] worker_thread+0x2a4/0x354 + [<800a9a54>] kthread+0x134/0x13c + [<8006306c>] ret_from_kernel_thread+0x14/0x1c + +Same Issue would affect some other PHYs (QCA8081, QCA9561), so fix it +too. + +Fixes: 3265f4218878 ("net: phy: at803x: add fiber support") +Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> +Reviewed-by: Andrew Lunn <andrew@lunn.ch> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/phy/at803x.c | 6 ++++++ + 1 file changed, 6 insertions(+) + +--- a/drivers/net/phy/at803x.c ++++ b/drivers/net/phy/at803x.c +@@ -1530,6 +1530,8 @@ static struct phy_driver at803x_driver[] + /* ATHEROS AR9331 */ + PHY_ID_MATCH_EXACT(ATH9331_PHY_ID), + .name = "Qualcomm Atheros AR9331 built-in PHY", ++ .probe = at803x_probe, ++ .remove = at803x_remove, + .suspend = at803x_suspend, + .resume = at803x_resume, + .flags = PHY_POLL_CABLE_TEST, |