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android_kernel_google_msm/net
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Roger Hu 7c56badc9a kernel: Revert "tcp: do not lock listener to process SYN packets" 
This commit belongs to the patch set (https://lwn.net/Articles/659199/)
that attempts to remove the use of locks on the socket table by
relocating the SYN table to a separate hash table and adding a spin lock
to protect the SYN request queue. Adding only this commit introduces a
race condition for LineageOS kernels for TCP listens, since the TCP SYN
data structures can be corrupted.

A TCP curl bomb on a TCP listen port will corrupt the SYN accept backlog:

for i in $(seq 1 400); do curl -x localhost:443 https://myhost.com -L  --connect-timeout 30 -o /dev/null -sS & done

Run `ss -nltp` and usually the RecVQ column does not drain to 0.

This reverts commit 7d9f104f9cabe1d72a50c4816a48f64fc1da7a64.

This really needs to be reverted across all LineageOS forks:
https://gitlab.com/LineageOS/issues/android/-/issues/3916#note_669493796

Change-Id: Ia7969aeedae411677b307a8e094f9a4cc02b801d
2022-07-05 01:10:45 -04:00
..
9p 9p: forgetting to cancel request on interrupted zero-copy RPC 2015-10-22 09:20:07 +08:00
802
8021q net: Replace u64_stats_fetch_begin_bh to u64_stats_fetch_begin_irq 2020-11-30 19:26:49 +03:00
appletalk appletalk: Fix socket referencing in skb 2014-07-28 07:06:45 -07:00
atm atm: deal with setting entry before mkip was called 2016-03-21 09:17:56 +08:00
ax25 net: add validation for the socket syscall protocol argument 2016-10-29 23:12:11 +08:00
batman-adv
bluetooth Bluetooth: cmtp: cmtp_add_connection() should verify that it's dealing with l2cap socket 2018-01-13 17:14:31 +03:00
bridge net: Explicitly initialize u64_stats_sync structures for lockdep 2020-11-30 19:26:40 +03:00
caif caif: remove wrong dev_net_set() call 2015-04-14 17:33:59 +08:00
can can: add missing initialisations in CAN related skbuffs 2015-06-19 11:40:23 +08:00
ceph crush: fix a bug in tree bucket decode 2015-10-22 09:20:07 +08:00
core net: Document dst->obsolete better. 2020-11-30 19:39:24 +03:00
dcb
dccp ipv6: Handle PMTU in ICMP error handlers. 2021-01-23 17:16:44 +03:00
decnet net: Document dst->obsolete better. 2020-11-30 19:39:24 +03:00
dns_resolver dns_resolver: Null-terminate the right string 2014-07-28 07:06:46 -07:00
dsa
econet
ethernet
ieee802154
ipv4 kernel: Revert "tcp: do not lock listener to process SYN packets" 2022-07-05 01:10:45 -04:00
ipv6 kernel: Revert "tcp: do not lock listener to process SYN packets" 2022-07-05 01:10:45 -04:00
ipx ipx: call ipxitf_put() in ioctl error path 2018-02-16 20:15:04 -07:00
irda Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
iucv
key xfrm: remove redundant parameter "int dir" in struct xfrm_mgr.acquire 2020-12-06 13:59:24 +03:00
l2tp Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
lapb
llc Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
mac80211 Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
netfilter net: Replace u64_stats_fetch_begin_bh to u64_stats_fetch_begin_irq 2020-11-30 19:26:49 +03:00
netlabel
netlink Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
netrom
nfc
openvswitch net: Replace u64_stats_fetch_begin_bh to u64_stats_fetch_begin_irq 2020-11-30 19:26:49 +03:00
packet Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
phonet
rds RDS: fix race condition when sending a message on unbound socket 2016-03-21 09:17:54 +08:00
rfkill Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
rose NET: ROSE: Don't dereference NULL neighbour pointer. 2015-09-18 09:20:47 +08:00
rxrpc Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
sched Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
sctp net: Document dst->obsolete better. 2020-11-30 19:39:24 +03:00
sunrpc vfs: make it possible to access the dentry hash/len as one 64-bit entry 2018-12-07 22:20:38 +04:00
tipc tipc: clear 'next'-pointer of message fragments before reassembly 2014-07-28 07:06:45 -07:00
unix pull mnt_want_write()/mnt_drop_write() into kern_path_create()/done_path_create() resp. 2018-12-07 22:28:48 +04:00
wanrouter
wimax
wireless cfg80211: Fix use after free when process wdev events 2020-10-25 02:37:54 -04:00
x25
xfrm xfrm: remove redundant parameter "int dir" in struct xfrm_mgr.acquire 2020-12-06 13:59:24 +03:00
activity_stats.c
compat.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
Kconfig
Makefile
nonet.c
socket.c Merge remote-tracking branch 'stable/linux-3.4.y' into lineage-15.1 2017-12-27 17:13:15 +03:00
sysctl_net.c