Wei Yongjun 1831d45404 mac802154: fix missing INIT_LIST_HEAD in ieee802154_if_add() ... [ Upstream commit b3d72d3135d2ef68296c1ee174436efd65386f04 ] Kernel fault injection test reports null-ptr-deref as follows: BUG: kernel NULL pointer dereference, address: 0000000000000008 RIP: 0010:cfg802154_netdev_notifier_call+0x120/0x310 include/linux/list.h:114 Call Trace: <TASK> raw_notifier_call_chain+0x6d/0xa0 kernel/notifier.c:87 call_netdevice_notifiers_info+0x6e/0xc0 net/core/dev.c:1944 unregister_netdevice_many_notify+0x60d/0xcb0 net/core/dev.c:1982 unregister_netdevice_queue+0x154/0x1a0 net/core/dev.c:10879 register_netdevice+0x9a8/0xb90 net/core/dev.c:10083 ieee802154_if_add+0x6ed/0x7e0 net/mac802154/iface.c:659 ieee802154_register_hw+0x29c/0x330 net/mac802154/main.c:229 mcr20a_probe+0xaaa/0xcb1 drivers/net/ieee802154/mcr20a.c:1316 ieee802154_if_add() allocates wpan_dev as netdev's private data, but not init the list in struct wpan_dev. cfg802154_netdev_notifier_call() manage the list when device register/unregister, and may lead to null-ptr-deref. Use INIT_LIST_HEAD() on it to initialize it correctly. Fixes: fcf39e6e88 ("ieee802154: add wpan_dev_list") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Acked-by: Alexander Aring <aahringo@redhat.com> Link: https://lore.kernel.org/r/20221130091705.1831140-1-weiyongjun@huaweicloud.com Signed-off-by: Stefan Schmidt <stefan@datenfreihafen.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-12-14 11:30:45 +01:00
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cfg.c
cfg.h
driver-ops.h
ieee802154_i.h
iface.c	mac802154: fix missing INIT_LIST_HEAD in ieee802154_if_add()	2022-12-14 11:30:45 +01:00
Kconfig
llsec.c
llsec.h
mac_cmd.c
main.c
Makefile
mib.c
rx.c	mac802154: Fix LQI recording	2022-11-03 23:56:53 +09:00
trace.c
trace.h
tx.c
util.c