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2860d45a58
linux/drivers/net/wan
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Xie He 1fef73597f net: hdlc_ppp: Fix issues when mod_timer is called while timer is running 
ppp_cp_event is called directly or indirectly by ppp_rx with "ppp->lock"
held. It may call mod_timer to add a new timer. However, at the same time
ppp_timer may be already running and waiting for "ppp->lock". In this
case, there's no need for ppp_timer to continue running and it can just
exit.

If we let ppp_timer continue running, it may call add_timer. This causes
kernel panic because add_timer can't be called with a timer pending.
This patch fixes this problem.

Fixes: e022c2f07a ("WAN: new synchronous PPP implementation for generic HDLC.")
Cc: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Xie He <xie.he.0141@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-12-28 15:09:04 -08:00
..
lmc drivers: net: wan: lmc: Fix W=1 set but used variable warnings 2020-11-02 16:04:34 -08:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
c101.c WAN: Replace HTTP links with HTTPS ones 2020-07-13 16:58:01 -07:00
cosa.c cosa: Add missing kfree in error path of cosa_write 2020-11-11 17:52:01 -08:00
cosa.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
farsync.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next 2020-08-05 20:13:21 -07:00
farsync.h WAN: Replace zero-length array with flexible-array member 2020-02-27 12:06:55 -08:00
fsl_ucc_hdlc.c net/wan/fsl_ucc_hdlc: Add MODULE_DESCRIPTION 2020-08-31 12:41:50 -07:00
fsl_ucc_hdlc.h net/wan/fsl_ucc_hdlc: avoid use of IS_ERR_VALUE() 2019-12-09 13:57:45 -06:00
hd64570.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
hd64570.h
hd64572.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
hd64572.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hdlc_cisco.c drivers/net/wan/hdlc: Set skb->protocol before transmitting 2020-09-17 16:41:12 -07:00
hdlc_fr.c net: hdlc_fr: Add support for any Ethertype 2020-11-03 15:19:21 -08:00
hdlc_ppp.c net: hdlc_ppp: Fix issues when mod_timer is called while timer is running 2020-12-28 15:09:04 -08:00
hdlc_raw_eth.c net: hdlc_raw_eth: Clear the IFF_TX_SKB_SHARING flag after calling ether_setup 2020-10-21 17:58:26 -07:00
hdlc_raw.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
hdlc_x25.c net: hdlc_x25: Remove unnecessary skb_reset_network_header calls 2020-12-09 19:22:48 -08:00
hdlc.c net: hdlc: In hdlc_rcv, check to make sure dev is an HDLC device 2020-10-21 17:20:19 -07:00
hostess_sv11.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
ixp4xx_hss.c wan: ixp4xx_hss: prepare compile testing 2020-01-12 12:59:52 -08:00
Kconfig net: wan: Delete the DLCI / SDLA drivers 2020-11-17 13:33:29 -08:00
lapbether.c net: lapbether: Consider it successful if (dis)connecting when already (dis)connected 2020-12-10 13:18:28 -08:00
Makefile net: wan: Delete the DLCI / SDLA drivers 2020-11-17 13:33:29 -08:00
n2.c WAN: Replace HTTP links with HTTPS ones 2020-07-13 16:58:01 -07:00
pc300too.c WAN: Replace HTTP links with HTTPS ones 2020-07-13 16:58:01 -07:00
pci200syn.c net: wan: remove trailing semicolon in macro definition 2020-11-30 18:58:31 -08:00
sbni.c wan: sbni: Avoid comma separated statements 2020-08-25 07:54:19 -07:00
sbni.h
sealevel.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
slic_ds26522.c net: wan: slic_ds26522: Remove unused macro DRV_NAME 2020-08-31 12:40:42 -07:00
slic_ds26522.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
wanxl.c wan: wanxl: switch from 'pci_' to 'dma_' API 2020-08-04 16:17:00 -07:00
wanxl.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
wanxlfw.inc_shipped
wanxlfw.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
z85230.c treewide: Remove uninitialized_var() usage 2020-07-16 12:35:15 -07:00
z85230.h Remove every trace of SERIAL_MAGIC 2019-11-13 19:01:14 +08:00