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OpenCloudOS-Kernel
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OpenCloudOS-Kernel/drivers/net
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Eric Dumazet 202700e307 net/hamradio/6pack: use mod_timer() to rearm timers 
Using del_timer() + add_timer() is generally unsafe on SMP,
as noticed by syzbot. Use mod_timer() instead.

kernel BUG at kernel/time/timer.c:1136!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 1026 Comm: kworker/u4:4 Not tainted 4.20.0+ #2
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound flush_to_ldisc
RIP: 0010:add_timer kernel/time/timer.c:1136 [inline]
RIP: 0010:add_timer+0xa81/0x1470 kernel/time/timer.c:1134
Code: 4d 89 7d 40 48 c7 85 70 fe ff ff 00 00 00 00 c7 85 7c fe ff ff ff ff ff ff 48 89 85 90 fe ff ff e9 e6 f7 ff ff e8 cf 42 12 00 <0f> 0b e8 c8 42 12 00 0f 0b e8 c1 42 12 00 4c 89 bd 60 fe ff ff e9
RSP: 0018:ffff8880a7fdf5a8 EFLAGS: 00010293
RAX: ffff8880a7846340 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff816f3ee1 RDI: ffff88808a514ff8
RBP: ffff8880a7fdf760 R08: 0000000000000007 R09: ffff8880a7846c58
R10: ffff8880a7846340 R11: 0000000000000000 R12: ffff88808a514ff8
R13: ffff88808a514ff8 R14: ffff88808a514dc0 R15: 0000000000000030
FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000061c500 CR3: 00000000994d9000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 decode_prio_command drivers/net/hamradio/6pack.c:903 [inline]
 sixpack_decode drivers/net/hamradio/6pack.c:971 [inline]
 sixpack_receive_buf drivers/net/hamradio/6pack.c:457 [inline]
 sixpack_receive_buf+0xf9c/0x1470 drivers/net/hamradio/6pack.c:434
 tty_ldisc_receive_buf+0x164/0x1c0 drivers/tty/tty_buffer.c:465
 tty_port_default_receive_buf+0x114/0x190 drivers/tty/tty_port.c:38
 receive_buf drivers/tty/tty_buffer.c:481 [inline]
 flush_to_ldisc+0x3b2/0x590 drivers/tty/tty_buffer.c:533
 process_one_work+0xd0c/0x1ce0 kernel/workqueue.c:2153
 worker_thread+0x143/0x14a0 kernel/workqueue.c:2296
 kthread+0x357/0x430 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Andreas Koensgen <ajk@comnets.uni-bremen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2019-01-02 10:27:01 -08:00
..
appletalk drivers/net: appletalk/cops: remove redundant if statement and mask 2018-12-24 14:48:26 -08:00
arcnet mm: remove include/linux/bootmem.h 2018-10-31 08:54:16 -07:00
bonding bonding: fix indentation issues, remove extra spaces 2018-12-18 15:01:23 -08:00
caif
…
can can: flexcan: split the Message Buffer RAM area 2018-11-28 16:52:25 +01:00
dsa net: dsa: bcm_sf2: Propagate error value from mdio_write 2018-12-27 16:22:13 -08:00
ethernet net-next/hinic:add shutdown callback 2019-01-02 10:13:35 -08:00
fddi FDDI: defza: Make the driver version string constant 2018-11-07 21:53:31 -08:00
fjes fjes: convert to DEFINE_SHOW_ATTRIBUTE 2018-12-10 12:05:20 -08:00
hamradio net/hamradio/6pack: use mod_timer() to rearm timers 2019-01-02 10:27:01 -08:00
hippi
…
hyperv net: dev: Add extack argument to dev_set_mac_address() 2018-12-13 18:41:38 -08:00
ieee802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-20 11:53:36 -08:00
ipvlan net: ipvlan: Issue NETDEV_PRE_CHANGEADDR 2018-12-13 18:41:38 -08:00
netdevsim drivers: net: netdevsim: use skb_sec_path helper 2018-12-19 11:21:37 -08:00
phy Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-20 11:53:36 -08:00
plip
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ppp ppp: Move PFC decompression to PPP generic layer 2018-12-20 16:49:30 -08:00
slip
…
team net: dev: Add extack argument to dev_set_mac_address() 2018-12-13 18:41:38 -08:00
usb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-21 15:06:20 -08:00
vmxnet3
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wan net/wan: fix a double free in x25_asy_open_tty() 2018-12-30 20:22:48 -08:00
wimax
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wireless Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2018-12-27 13:53:32 -08:00
xen-netback net: xenbus: convert to DEFINE_SHOW_ATTRIBUTE 2018-12-10 12:05:20 -08:00
Kconfig net: documentation: build a directory structure for drivers 2018-12-05 11:30:06 -08:00
LICENSE.SRC
…
Makefile
…
Space.c
…
dummy.c
…
eql.c
…
geneve.c geneve: Initialize addr6 with memset 2018-11-17 22:03:06 -08:00
gtp.c
…
ifb.c
…
loopback.c net: loopback: clear skb->tstamp before netif_rx() 2018-10-20 01:01:28 -07:00
macsec.c macsec: let the administrator set UP state even if lowerdev is down 2018-10-28 19:26:42 -07:00
macvlan.c net: dev: Add extack argument to dev_set_mac_address() 2018-12-13 18:41:38 -08:00
macvtap.c
…
mdio.c
…
mii.c
…
net_failover.c net: core: dev: Add extack argument to dev_open() 2018-12-06 13:26:06 -08:00
netconsole.c
…
nlmon.c
…
ntb_netdev.c ntb_netdev: Simplify remove with client device drvdata 2018-10-31 21:20:05 -04:00
rionet.c rapidio/rionet: do not free skb before reading its length 2018-11-28 10:38:48 -08:00
sb1000.c
…
sungem_phy.c
…
tap.c tap: call skb_probe_transport_header after setting skb->dev 2019-01-01 12:01:02 -08:00
thunderbolt.c
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tun.c tun: replace get_cpu_ptr with this_cpu_ptr when bh disabled 2018-12-14 13:36:26 -08:00
veth.c net: Add extack argument to rtnl_create_link 2018-11-06 15:00:45 -08:00
virtio_net.c virtio-net: ethtool configurable LRO 2018-12-20 19:14:15 -08:00
vrf.c net: core: dev: Add extack argument to dev_change_flags() 2018-12-06 13:26:07 -08:00
vsockmon.c
…
vxlan.c vxlan: Correct merge error. 2018-12-20 16:14:22 -08:00
xen-netfront.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-20 11:53:36 -08:00