Jozsef Kadlecsik 8964cc36ba netfilter: ipset: Rework long task execution when adding/deleting entries ... [ Upstream commit 5e29dc36bd ] When adding/deleting large number of elements in one step in ipset, it can take a reasonable amount of time and can result in soft lockup errors. The patch 5f7b51bf09 ("netfilter: ipset: Limit the maximal range of consecutive elements to add/delete") tried to fix it by limiting the max elements to process at all. However it was not enough, it is still possible that we get hung tasks. Lowering the limit is not reasonable, so the approach in this patch is as follows: rely on the method used at resizing sets and save the state when we reach a smaller internal batch limit, unlock/lock and proceed from the saved state. Thus we can avoid long continuous tasks and at the same time removed the limit to add/delete large number of elements in one step. The nfnl mutex is held during the whole operation which prevents one to issue other ipset commands in parallel. Fixes: 5f7b51bf09 ("netfilter: ipset: Limit the maximal range of consecutive elements to add/delete") Reported-by: syzbot+9204e7399656300bf271@syzkaller.appspotmail.com Signed-off-by: Jozsef Kadlecsik <kadlec@netfilter.org> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-01-12 12:02:26 +01:00
..
acpi	ACPI: APEI: Fix integer overflow in ghes_estatus_pool_init()	2022-10-13 20:40:09 +02:00
asm-generic	15 hotfixes. 11 marked cc:stable. Only three or four of the latter	2022-12-02 13:39:38 -08:00
clocksource
crypto
drm	drm/edid: add a quirk for two LG monitors to get them to work on 10bpc	2022-12-31 13:32:59 +01:00
dt-bindings	dt-bindings: clocks: imx8mp: Add ID for usb suspend clock	2022-12-31 13:33:09 +01:00
keys
kunit	kunit: declare kunit_assert structs as const	2022-10-07 10:19:18 -06:00
kvm
linux	netfilter: ipset: Rework long task execution when adding/deleting entries	2023-01-12 12:02:26 +01:00
math-emu
media	media: dvbdev: fix build warning due to comments	2022-12-31 13:33:12 +01:00
memory
misc
net	tcp: Add TIME_WAIT sockets in bhash2.	2023-01-12 12:02:15 +01:00
pcmcia
ras
rdma
rv
scsi	SCSI misc on 20221007	2022-10-07 12:33:18 -07:00
soc	ARM: at91: pm: avoid soft resetting AC DLL	2022-11-01 12:25:19 +02:00
sound	ALSA: hda/hdmi: fix stream-id config keep-alive for rt suspend	2022-12-31 13:33:07 +01:00
target
trace	ext4: disable fast-commit of encrypted dir operations	2023-01-07 11:12:00 +01:00
uapi	eventpoll: add EPOLL_URING_WAKE poll wakeup flag	2023-01-04 11:28:47 +01:00
ufs	SCSI misc on 20221007	2022-10-07 12:33:18 -07:00
vdso
video
xen	xen/virtio: enable grant based virtio on x86	2022-10-10 14:31:26 +02:00