linux/include
Eric Dumazet dec23a559f net: add pfmemalloc check in sk_add_backlog()
[ Upstream commit c7c49b8fde ]

Greg reported crashes hitting the following check in __sk_backlog_rcv()

	BUG_ON(!sock_flag(sk, SOCK_MEMALLOC));

The pfmemalloc bit is currently checked in sk_filter().

This works correctly for TCP, because sk_filter() is ran in
tcp_v[46]_rcv() before hitting the prequeue or backlog checks.

For UDP or other protocols, this does not work, because the sk_filter()
is ran from sock_queue_rcv_skb(), which might be called _after_ backlog
queuing if socket is owned by user by the time packet is processed by
softirq handler.

Fixes: b4b9e35585 ("netvm: set PF_MEMALLOC as appropriate during SKB processing")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Greg Thelen <gthelen@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-27 09:44:48 +09:00
..
acpi ACPICA: Tables: Fix an issue that FACS initialization is performed twice 2015-08-03 09:29:46 -07:00
asm-generic nosave: consolidate __nosave_{begin,end} in <asm/sections.h> 2015-05-06 21:56:28 +02:00
clocksource clocksource: arch_timer: use virtual counters 2014-01-09 12:24:26 -08:00
crypto crypto: scatterwalk - Use sg_chain_ptr on chain entries 2013-12-11 22:36:29 -08:00
drm drm/radeon: add new OLAND pci id 2015-09-13 09:07:59 -07:00
dt-bindings
keys
linux skbuff: Fix skb checksum partial check. 2015-10-27 09:44:48 +09:00
math-emu
media media: vb2: fix VBI/poll regression 2014-10-09 12:18:42 -07:00
memory
misc
net net: add pfmemalloc check in sk_add_backlog() 2015-10-27 09:44:48 +09:00
pcmcia
ras
rdma
rxrpc
scsi scsi: fix our current target reap infrastructure 2014-05-30 21:52:11 -07:00
sound ALSA: emu10k1: Emu10k2 32 bit DMA mode 2015-05-13 05:15:41 -07:00
target target: Report correct response length for some commands 2014-06-30 20:09:45 -07:00
trace tracing: Fix syscall_*regfunc() vs copy_process() race 2014-07-06 18:54:16 -07:00
uapi USB: usbfs: allow URBs to be reaped after disconnection 2015-08-03 09:29:47 -07:00
video Merge branch 'fbdev-3.10-fixes' of git://gitorious.org/linux-omap-dss2/linux into linux-fbdev/for-3.10-fixes 2013-05-29 17:00:34 +08:00
xen x86/xen: Support kexec/kdump in HVM guests by doing a soft reset 2015-10-22 14:37:50 -07:00
Kbuild