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1fd05ba5a2
android_kernel_xiaomi_sm8350/net
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Miklos Szeredi 1fd05ba5a2 [AF_UNIX]: Rewrite garbage collector, fixes race. 
Throw out the old mark & sweep garbage collector and put in a
refcounting cycle detecting one.

The old one had a race with recvmsg, that resulted in false positives
and hence data loss.  The old algorithm operated on all unix sockets
in the system, so any additional locking would have meant performance
problems for all users of these.

The new algorithm instead only operates on "in flight" sockets, which
are very rare, and the additional locking for these doesn't negatively
impact the vast majority of users.

In fact it's probable, that there weren't *any* heavy senders of
sockets over sockets, otherwise the above race would have been
discovered long ago.

The patch works OK with the app that exposed the race with the old
code.  The garbage collection has also been verified to work in a few
simple cases.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-07-11 14:22:39 -07:00
..
802 [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
8021q [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
appletalk [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
atm [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
ax25 [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
bluetooth Fix use-after-free oops in Bluetooth HID. 2007-07-07 12:22:37 -07:00
bridge [NET]: IPV6 checksum offloading in network devices 2007-07-10 22:15:52 -07:00
core [NET]: Fix gen_estimator timer removal race 2007-07-10 22:19:03 -07:00
dccp [IPV6]: Do not send RH0 anymore. 2007-07-10 22:55:49 -07:00
decnet [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
econet [SK_BUFF]: Convert skb->tail to sk_buff_data_t 2007-04-25 22:26:28 -07:00
ethernet [CORE] Stack changes to add multiqueue hardware support API 2007-07-10 22:16:21 -07:00
ieee80211 [PATCH] softmac: use list_for_each_entry 2007-07-08 22:16:37 -04:00
ipv4 [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
ipv6 [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
ipx [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
irda [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
iucv Add suspend-related notifications for CPU hotplug 2007-05-09 12:30:56 -07:00
key xfrm: Add security check before flushing SAD/SPD 2007-06-07 13:42:46 -07:00
lapb [PATCH] remove many unneeded #includes of sched.h 2007-02-14 08:09:54 -08:00
llc [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
mac80211 [MAC80211]: Set low initial rate in rc80211_simple 2007-07-10 22:16:25 -07:00
netfilter [NETFILTER]: {ip, nf}_conntrack_sctp: fix remotely triggerable NULL ptr dereference (CVE-2007-2876) 2007-07-10 23:24:52 -07:00
netlabel [NetLabel]: consolidate the struct socket/sock handling to just struct sock 2007-06-08 13:33:09 -07:00
netlink [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
netrom [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
packet [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
rfkill [RFKILL]: Fix check for correct rfkill allocation 2007-05-19 12:24:39 -07:00
rose [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
rxrpc [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
sched [NET_SCHED]: Make HTB scheduler work with TSO. 2007-07-10 22:43:16 -07:00
sctp [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
sunrpc [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
tipc [TIPC]: Optimize stream send routine to avoid fragmentation 2007-07-10 22:06:12 -07:00
unix [AF_UNIX]: Rewrite garbage collector, fixes race. 2007-07-11 14:22:39 -07:00
wanrouter [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
wireless [PATCH] cfg80211: fix signed macaddress in sysfs 2007-06-11 17:47:41 -04:00
x25 [NET]: Make all initialized struct seq_operations const. 2007-07-10 23:07:31 -07:00
xfrm [XFRM] Introduce standalone SAD lookup 2007-07-10 22:16:35 -07:00
compat.c [NET]: Adding SO_TIMESTAMPNS / SCM_TIMESTAMPNS support 2007-04-25 22:24:21 -07:00
Kconfig [S390] Kconfig: no wireless on s390. 2007-05-10 15:46:08 +02:00
Makefile [RXRPC]: Remove Makefile reference to obsolete RXRPC config variable 2007-07-10 22:19:01 -07:00
nonet.c
socket.c Remove SLAB_CTOR_CONSTRUCTOR 2007-05-17 05:23:04 -07:00
sysctl_net.c
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