Sergej Bauer d0363dcabb lan743x: fix for potential NULL pointer dereference with bare card ... [ Upstream commit e9e13b6adc ] This is the 3rd revision of the patch fix for potential null pointer dereference with lan743x card. The simpliest way to reproduce: boot with bare lan743x and issue "ethtool ethN" commant where ethN is the interface with lan743x card. Example: $ sudo ethtool eth7 dmesg: [ 103.510336] BUG: kernel NULL pointer dereference, address: 0000000000000340 ... [ 103.510836] RIP: 0010:phy_ethtool_get_wol+0x5/0x30 [libphy] ... [ 103.511629] Call Trace: [ 103.511666] lan743x_ethtool_get_wol+0x21/0x40 [lan743x] [ 103.511724] dev_ethtool+0x1507/0x29d0 [ 103.511769] ? avc_has_extended_perms+0x17f/0x440 [ 103.511820] ? tomoyo_init_request_info+0x84/0x90 [ 103.511870] ? tomoyo_path_number_perm+0x68/0x1e0 [ 103.511919] ? tty_insert_flip_string_fixed_flag+0x82/0xe0 [ 103.511973] ? inet_ioctl+0x187/0x1d0 [ 103.512016] dev_ioctl+0xb5/0x560 [ 103.512055] sock_do_ioctl+0xa0/0x140 [ 103.512098] sock_ioctl+0x2cb/0x3c0 [ 103.512139] __x64_sys_ioctl+0x84/0xc0 [ 103.512183] do_syscall_64+0x33/0x80 [ 103.512224] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 103.512274] RIP: 0033:0x7f54a9cba427 ... Previous versions can be found at: v1: initial version https://lkml.org/lkml/2020/10/28/921 v2: do not return from lan743x_ethtool_set_wol if netdev->phydev == NULL, just skip the call of phy_ethtool_set_wol() instead. https://lkml.org/lkml/2020/10/31/380 v3: in function lan743x_ethtool_set_wol: use ternary operator instead of if-else sentence (review by Markus Elfring) return -ENETDOWN insted of -EIO (review by Andrew Lunn) Signed-off-by: Sergej Bauer <sbauer@blackbox.su> Link: https://lore.kernel.org/r/20201101223556.16116-1-sbauer@blackbox.su Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-12-21 13:27:04 +01:00
..
Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
enc28j60.c	enc28j60: Convert to use SPDX identifier	2019-03-19 14:59:32 -07:00
enc28j60_hw.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
encx24j600-regmap.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
encx24j600.c	net: microchip: encx24j600: add missed kthread_stop	2020-06-03 08:21:09 +02:00
encx24j600_hw.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
lan743x_ethtool.c	lan743x: fix for potential NULL pointer dereference with bare card	2020-12-21 13:27:04 +01:00
lan743x_ethtool.h	lan743x: Add support for ethtool get_drvinfo	2018-07-23 14:09:18 -07:00
lan743x_main.c	lan743x: prevent entire kernel HANG on open, for some platforms	2020-11-24 13:28:56 +01:00
lan743x_main.h	lan743x: fix "BUG: invalid wait context" when setting rx mode	2020-11-18 19:20:27 +01:00
lan743x_ptp.c	net: reject PTP periodic output requests with unsupported flags	2019-11-15 12:48:32 -08:00
lan743x_ptp.h	net: lan743x: fix building without CONFIG_PTP_1588_CLOCK	2018-08-13 20:43:47 -07:00