--- /dev/null
+From c696b97d4034fa4feb6f8012acea56d6f391eef1 Mon Sep 17 00:00:00 2001
+From: Sasha Levin <sashal@kernel.org>
+Date: Thu, 15 Jul 2021 16:59:00 -0700
+Subject: net: Fix zero-copy head len calculation.
+
+From: Pravin B Shelar <pshelar@ovn.org>
+
+[ Upstream commit a17ad0961706244dce48ec941f7e476a38c0e727 ]
+
+In some cases skb head could be locked and entire header
+data is pulled from skb. When skb_zerocopy() called in such cases,
+following BUG is triggered. This patch fixes it by copying entire
+skb in such cases.
+This could be optimized incase this is performance bottleneck.
+
+---8<---
+kernel BUG at net/core/skbuff.c:2961!
+invalid opcode: 0000 [#1] SMP PTI
+CPU: 2 PID: 0 Comm: swapper/2 Tainted: G OE 5.4.0-77-generic #86-Ubuntu
+Hardware name: OpenStack Foundation OpenStack Nova, BIOS 1.13.0-1ubuntu1.1 04/01/2014
+RIP: 0010:skb_zerocopy+0x37a/0x3a0
+RSP: 0018:ffffbcc70013ca38 EFLAGS: 00010246
+Call Trace:
+ <IRQ>
+ queue_userspace_packet+0x2af/0x5e0 [openvswitch]
+ ovs_dp_upcall+0x3d/0x60 [openvswitch]
+ ovs_dp_process_packet+0x125/0x150 [openvswitch]
+ ovs_vport_receive+0x77/0xd0 [openvswitch]
+ netdev_port_receive+0x87/0x130 [openvswitch]
+ netdev_frame_hook+0x4b/0x60 [openvswitch]
+ __netif_receive_skb_core+0x2b4/0xc90
+ __netif_receive_skb_one_core+0x3f/0xa0
+ __netif_receive_skb+0x18/0x60
+ process_backlog+0xa9/0x160
+ net_rx_action+0x142/0x390
+ __do_softirq+0xe1/0x2d6
+ irq_exit+0xae/0xb0
+ do_IRQ+0x5a/0xf0
+ common_interrupt+0xf/0xf
+
+Code that triggered BUG:
+int
+skb_zerocopy(struct sk_buff *to, struct sk_buff *from, int len, int hlen)
+{
+ int i, j = 0;
+ int plen = 0; /* length of skb->head fragment */
+ int ret;
+ struct page *page;
+ unsigned int offset;
+
+ BUG_ON(!from->head_frag && !hlen);
+
+Signed-off-by: Pravin B Shelar <pshelar@ovn.org>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ net/core/skbuff.c | 5 ++++-
+ 1 file changed, 4 insertions(+), 1 deletion(-)
+
+diff --git a/net/core/skbuff.c b/net/core/skbuff.c
+index 7665154c85c2..58989a5ba362 100644
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -2243,8 +2243,11 @@ skb_zerocopy_headlen(const struct sk_buff *from)
+
+ if (!from->head_frag ||
+ skb_headlen(from) < L1_CACHE_BYTES ||
+- skb_shinfo(from)->nr_frags >= MAX_SKB_FRAGS)
++ skb_shinfo(from)->nr_frags >= MAX_SKB_FRAGS) {
+ hlen = skb_headlen(from);
++ if (!hlen)
++ hlen = from->len;
++ }
+
+ if (skb_has_frag_list(from))
+ hlen = from->len;
+--
+2.30.2
+
--- /dev/null
+From 4bbb83b7cad52529c2a2b83c1af041669717bceb Mon Sep 17 00:00:00 2001
+From: Sasha Levin <sashal@kernel.org>
+Date: Wed, 14 Jul 2021 19:00:21 +0200
+Subject: r8152: Fix potential PM refcount imbalance
+
+From: Takashi Iwai <tiwai@suse.de>
+
+[ Upstream commit 9c23aa51477a37f8b56c3c40192248db0663c196 ]
+
+rtl8152_close() takes the refcount via usb_autopm_get_interface() but
+it doesn't release when RTL8152_UNPLUG test hits. This may lead to
+the imbalance of PM refcount. This patch addresses it.
+
+Link: https://bugzilla.suse.com/show_bug.cgi?id=1186194
+Signed-off-by: Takashi Iwai <tiwai@suse.de>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ drivers/net/usb/r8152.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
+index 5baaa8291624..ebf6d4cf09ea 100644
+--- a/drivers/net/usb/r8152.c
++++ b/drivers/net/usb/r8152.c
+@@ -3159,9 +3159,10 @@ static int rtl8152_close(struct net_device *netdev)
+ tp->rtl_ops.down(tp);
+
+ mutex_unlock(&tp->control);
++ }
+
++ if (!res)
+ usb_autopm_put_interface(tp->intf);
+- }
+
+ free_all_mem(tp);
+
+--
+2.30.2
+
--- /dev/null
+From b933f859e354f0f4774192d336d801f246197883 Mon Sep 17 00:00:00 2001
+From: Sasha Levin <sashal@kernel.org>
+Date: Sun, 27 Jun 2021 16:04:18 +0800
+Subject: regulator: rt5033: Fix n_voltages settings for BUCK and LDO
+
+From: Axel Lin <axel.lin@ingics.com>
+
+[ Upstream commit 6549c46af8551b346bcc0b9043f93848319acd5c ]
+
+For linear regulators, the n_voltages should be (max - min) / step + 1.
+
+Buck voltage from 1v to 3V, per step 100mV, and vout mask is 0x1f.
+If value is from 20 to 31, the voltage will all be fixed to 3V.
+And LDO also, just vout range is different from 1.2v to 3v, step is the
+same. If value is from 18 to 31, the voltage will also be fixed to 3v.
+
+Signed-off-by: Axel Lin <axel.lin@ingics.com>
+Reviewed-by: ChiYuan Huang <cy_huang@richtek.com>
+Link: https://lore.kernel.org/r/20210627080418.1718127-1-axel.lin@ingics.com
+Signed-off-by: Mark Brown <broonie@kernel.org>
+Signed-off-by: Sasha Levin <sashal@kernel.org>
+---
+ include/linux/mfd/rt5033-private.h | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/include/linux/mfd/rt5033-private.h b/include/linux/mfd/rt5033-private.h
+index 1b63fc2f42d1..52d53d134f72 100644
+--- a/include/linux/mfd/rt5033-private.h
++++ b/include/linux/mfd/rt5033-private.h
+@@ -203,13 +203,13 @@ enum rt5033_reg {
+ #define RT5033_REGULATOR_BUCK_VOLTAGE_MIN 1000000U
+ #define RT5033_REGULATOR_BUCK_VOLTAGE_MAX 3000000U
+ #define RT5033_REGULATOR_BUCK_VOLTAGE_STEP 100000U
+-#define RT5033_REGULATOR_BUCK_VOLTAGE_STEP_NUM 32
++#define RT5033_REGULATOR_BUCK_VOLTAGE_STEP_NUM 21
+
+ /* RT5033 regulator LDO output voltage uV */
+ #define RT5033_REGULATOR_LDO_VOLTAGE_MIN 1200000U
+ #define RT5033_REGULATOR_LDO_VOLTAGE_MAX 3000000U
+ #define RT5033_REGULATOR_LDO_VOLTAGE_STEP 100000U
+-#define RT5033_REGULATOR_LDO_VOLTAGE_STEP_NUM 32
++#define RT5033_REGULATOR_LDO_VOLTAGE_STEP_NUM 19
+
+ /* RT5033 regulator SAFE LDO output voltage uV */
+ #define RT5033_REGULATOR_SAFE_LDO_VOLTAGE 4900000U
+--
+2.30.2
+
btrfs-mark-compressed-range-uptodate-only-if-all-bio.patch
+regulator-rt5033-fix-n_voltages-settings-for-buck-an.patch
+r8152-fix-potential-pm-refcount-imbalance.patch
+net-fix-zero-copy-head-len-calculation.patch
projects / thirdparty / kernel / stable-queue.git / commitdiff
