Xie He f72e3d81c6 net: lapbether: Prevent racing when checking whether the netif is running ... [ Upstream commit 5acd0cfbfb ] There are two "netif_running" checks in this driver. One is in "lapbeth_xmit" and the other is in "lapbeth_rcv". They serve to make sure that the LAPB APIs called in these functions are called before "lapb_unregister" is called by the "ndo_stop" function. However, these "netif_running" checks are unreliable, because it's possible that immediately after "netif_running" returns true, "ndo_stop" is called (which causes "lapb_unregister" to be called). This patch adds locking to make sure "lapbeth_xmit" and "lapbeth_rcv" can reliably check and ensure the netif is running while doing their work. Fixes: 1da177e4c3 ("Linux-2.6.12-rc2") Signed-off-by: Xie He <xie.he.0141@gmail.com> Acked-by: Martin Schiller <ms@dev.tdt.de> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-05-14 09:50:29 +02:00
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lmc	net: wan/lmc: unregister device when no matching device is found	2021-04-07 15:00:08 +02:00
.gitignore
c101.c
cosa.c
cosa.h
dlci.c
farsync.c
farsync.h
fsl_ucc_hdlc.c	net: wan: fix error return code of uhdlc_init()	2021-03-30 14:31:49 +02:00
fsl_ucc_hdlc.h
hd64570.c
hd64570.h
hd64572.c
hd64572.h
hdlc.c
hdlc_cisco.c
hdlc_fr.c	Revert "drivers/net/wan/hdlc_fr: Fix a double free in pvc_xmit"	2021-05-14 09:50:05 +02:00
hdlc_ppp.c
hdlc_raw.c
hdlc_raw_eth.c
hdlc_x25.c	net: hdlc_x25: Prevent racing between "x25_close" and "x25_xmit"/"x25_rx"	2021-03-30 14:31:59 +02:00
hostess_sv11.c
ixp4xx_hss.c
Kconfig
lapbether.c	net: lapbether: Prevent racing when checking whether the netif is running	2021-05-14 09:50:29 +02:00
Makefile
n2.c
pc300too.c
pci200syn.c
sbni.c
sbni.h
sdla.c
sealevel.c
slic_ds26522.c
slic_ds26522.h
wanxl.c
wanxl.h
wanxlfw.inc_shipped
wanxlfw.S
x25_asy.c
x25_asy.h
z85230.c
z85230.h