Subash Abhinov Kasiviswanathan af1b19b16b net: qualcomm: rmnet: Fix incorrect receive packet handling during cleanup ... [ Upstream commit fc70f5bf5e ] During rmnet unregistration, the real device rx_handler is first cleared followed by the removal of rx_handler_data after the rcu synchronization. Any packets in the receive path may observe that the rx_handler is NULL. However, there is no check when dereferencing this value to use the rmnet_port information. This fixes following splat by adding the NULL check. Unable to handle kernel NULL pointer dereference at virtual address 000000000000000d pc : rmnet_rx_handler+0x124/0x284 lr : rmnet_rx_handler+0x124/0x284 rmnet_rx_handler+0x124/0x284 __netif_receive_skb_core+0x758/0xd74 __netif_receive_skb+0x50/0x17c process_backlog+0x15c/0x1b8 napi_poll+0x88/0x284 net_rx_action+0xbc/0x23c __do_softirq+0x20c/0x48c Fixes: ceed73a2cf ("drivers: net: ethernet: qualcomm: rmnet: Initial implementation") Signed-off-by: Sean Tranchetti <stranche@codeaurora.org> Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org> Link: https://lore.kernel.org/r/1605298325-3705-1-git-send-email-subashab@codeaurora.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-11-24 13:27:17 +01:00
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emac	net: qcom/emac: add missed clk_disable_unprepare in error path of emac_clks_phase1_init	2020-08-21 11:05:37 +02:00
rmnet	net: qualcomm: rmnet: Fix incorrect receive packet handling during cleanup	2020-11-24 13:27:17 +01:00
Kconfig	drivers: net: ethernet: qualcomm: rmnet: Initial implementation	2017-08-30 11:41:13 -07:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
qca_7k_common.c
qca_7k_common.h
qca_7k.c	net: qca_spi: Fix race condition in spi transfers	2018-09-05 08:09:35 -07:00
qca_7k.h
qca_debug.c	ethernet: Use octal not symbolic permissions	2018-03-26 12:07:49 -04:00
qca_debug.h
qca_spi.c	net: qca_spi: Move reset_count to struct qcaspi	2020-01-27 14:51:20 +01:00
qca_spi.h	net: qca_spi: Move reset_count to struct qcaspi	2020-01-27 14:51:20 +01:00
qca_uart.c