* [PATCH v3 RFC 0/2] ixgbe: ixgbe_atr() bug fixes
@ 2016-10-17 21:12 ` Sowmini Varadhan
0 siblings, 0 replies; 14+ messages in thread
From: Sowmini Varadhan @ 2016-10-17 21:12 UTC (permalink / raw)
To: alexander.h.duyck; +Cc: netdev, intel-wired-lan, Sowmini Varadhan
Two bug fixes:
- ixgbe_atr() should check for protocol == udp in the
skb->encapsulation case (instead of !=)
- ixgbe_atr() should make sure the non-paged data has the
needed network/transport header for computing l4_proto.
v3: Alex Duyck comments
Sowmini Varadhan (2):
ixgbe: ixgbe_atr() should access udp_hdr(skb) only for UDP packets
ixgbe: ixgbe_atr() compute l4_proto only if non-paged data has
network/transport headers
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 19 ++++++++++++++++++-
1 files changed, 18 insertions(+), 1 deletions(-)
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Intel-wired-lan] [PATCH v3 RFC 0/2] ixgbe: ixgbe_atr() bug fixes
@ 2016-10-17 21:12 ` Sowmini Varadhan
0 siblings, 0 replies; 14+ messages in thread
From: Sowmini Varadhan @ 2016-10-17 21:12 UTC (permalink / raw)
To: intel-wired-lan
Two bug fixes:
- ixgbe_atr() should check for protocol == udp in the
skb->encapsulation case (instead of !=)
- ixgbe_atr() should make sure the non-paged data has the
needed network/transport header for computing l4_proto.
v3: Alex Duyck comments
Sowmini Varadhan (2):
ixgbe: ixgbe_atr() should access udp_hdr(skb) only for UDP packets
ixgbe: ixgbe_atr() compute l4_proto only if non-paged data has
network/transport headers
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 19 ++++++++++++++++++-
1 files changed, 18 insertions(+), 1 deletions(-)
^ permalink raw reply [flat|nested] 14+ messages in thread
* [PATCH V3 RFC 1/2] ixgbe: ixgbe_atr() should access udp_hdr(skb) only for UDP packets
2016-10-17 21:12 ` [Intel-wired-lan] " Sowmini Varadhan
@ 2016-10-17 21:12 ` Sowmini Varadhan
-1 siblings, 0 replies; 14+ messages in thread
From: Sowmini Varadhan @ 2016-10-17 21:12 UTC (permalink / raw)
To: alexander.h.duyck; +Cc: netdev, intel-wired-lan, Sowmini Varadhan
Commit 9f12df906cd8 ("ixgbe: Store VXLAN port number in network order")
incorrectly checks for hdr.ipv4->protocol != IPPROTO_UDP
in ixgbe_atr(). This check should be for "==" instead.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
---
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index a244d9a..eceb47b 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -7653,7 +7653,7 @@ static void ixgbe_atr(struct ixgbe_ring *ring,
hdr.network = skb_network_header(skb);
if (skb->encapsulation &&
first->protocol == htons(ETH_P_IP) &&
- hdr.ipv4->protocol != IPPROTO_UDP) {
+ hdr.ipv4->protocol == IPPROTO_UDP) {
struct ixgbe_adapter *adapter = q_vector->adapter;
/* verify the port is recognized as VXLAN */
--
1.7.1
^ permalink raw reply related [flat|nested] 14+ messages in thread
* [Intel-wired-lan] [PATCH V3 RFC 1/2] ixgbe: ixgbe_atr() should access udp_hdr(skb) only for UDP packets
@ 2016-10-17 21:12 ` Sowmini Varadhan
0 siblings, 0 replies; 14+ messages in thread
From: Sowmini Varadhan @ 2016-10-17 21:12 UTC (permalink / raw)
To: intel-wired-lan
Commit 9f12df906cd8 ("ixgbe: Store VXLAN port number in network order")
incorrectly checks for hdr.ipv4->protocol != IPPROTO_UDP
in ixgbe_atr(). This check should be for "==" instead.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
---
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index a244d9a..eceb47b 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -7653,7 +7653,7 @@ static void ixgbe_atr(struct ixgbe_ring *ring,
hdr.network = skb_network_header(skb);
if (skb->encapsulation &&
first->protocol == htons(ETH_P_IP) &&
- hdr.ipv4->protocol != IPPROTO_UDP) {
+ hdr.ipv4->protocol == IPPROTO_UDP) {
struct ixgbe_adapter *adapter = q_vector->adapter;
/* verify the port is recognized as VXLAN */
--
1.7.1
^ permalink raw reply related [flat|nested] 14+ messages in thread
* [PATCH V3 RFC 2/2] ixgbe: ixgbe_atr() compute l4_proto only if non-paged data has network/transport headers
2016-10-17 21:12 ` [Intel-wired-lan] " Sowmini Varadhan
@ 2016-10-17 21:12 ` Sowmini Varadhan
-1 siblings, 0 replies; 14+ messages in thread
From: Sowmini Varadhan @ 2016-10-17 21:12 UTC (permalink / raw)
To: alexander.h.duyck; +Cc: netdev, intel-wired-lan, Sowmini Varadhan
For some Tx paths (e.g., tpacket_snd()), ixgbe_atr may be
passed down an sk_buff that has the network and transport
header in the paged data, so it needs to make sure these
headers are available in the headlen bytes to calculate the
l4_proto.
This patch expect that network and transport headers are
already available in the non-paged header dat. The assumption
is that the caller has set this up if l4_proto based Tx
steering is desired.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
---
v3: add unlikely(); remove needless check for hdr.network against
skb_tail_pointer(); refactor check to make sure we have tcp header
in non-paged part.
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 17 +++++++++++++++++
1 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index eceb47b..a9d2b0c 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -54,6 +54,7 @@
#include <net/pkt_cls.h>
#include <net/tc_act/tc_gact.h>
#include <net/tc_act/tc_mirred.h>
+#include <net/vxlan.h>
#include "ixgbe.h"
#include "ixgbe_common.h"
@@ -7651,11 +7652,17 @@ static void ixgbe_atr(struct ixgbe_ring *ring,
/* snag network header to get L4 type and address */
skb = first->skb;
hdr.network = skb_network_header(skb);
+ if (unlikely(hdr.network <= skb->data))
+ return;
if (skb->encapsulation &&
first->protocol == htons(ETH_P_IP) &&
hdr.ipv4->protocol == IPPROTO_UDP) {
struct ixgbe_adapter *adapter = q_vector->adapter;
+ if (unlikely(skb_tail_pointer(skb) < hdr.network +
+ VXLAN_HEADROOM))
+ return;
+
/* verify the port is recognized as VXLAN */
if (adapter->vxlan_port &&
udp_hdr(skb)->dest == adapter->vxlan_port)
@@ -7666,6 +7673,12 @@ static void ixgbe_atr(struct ixgbe_ring *ring,
hdr.network = skb_inner_network_header(skb);
}
+ /* Make sure we have at least [minimum IPv4 header + TCP]
+ * or [IPv6 header] bytes
+ */
+ if (unlikely(skb_tail_pointer(skb) < hdr.network + 40))
+ return;
+
/* Currently only IPv4/IPv6 with TCP is supported */
switch (hdr.ipv4->version) {
case IPVERSION:
@@ -7685,6 +7698,10 @@ static void ixgbe_atr(struct ixgbe_ring *ring,
if (l4_proto != IPPROTO_TCP)
return;
+ if (unlikely(skb_tail_pointer(skb) < hdr.network +
+ hlen + sizeof(struct tcphdr)))
+ return;
+
th = (struct tcphdr *)(hdr.network + hlen);
/* skip this packet since the socket is closing */
--
1.7.1
^ permalink raw reply related [flat|nested] 14+ messages in thread
* [Intel-wired-lan] [PATCH V3 RFC 2/2] ixgbe: ixgbe_atr() compute l4_proto only if non-paged data has network/transport headers
@ 2016-10-17 21:12 ` Sowmini Varadhan
0 siblings, 0 replies; 14+ messages in thread
From: Sowmini Varadhan @ 2016-10-17 21:12 UTC (permalink / raw)
To: intel-wired-lan
For some Tx paths (e.g., tpacket_snd()), ixgbe_atr may be
passed down an sk_buff that has the network and transport
header in the paged data, so it needs to make sure these
headers are available in the headlen bytes to calculate the
l4_proto.
This patch expect that network and transport headers are
already available in the non-paged header dat. The assumption
is that the caller has set this up if l4_proto based Tx
steering is desired.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
---
v3: add unlikely(); remove needless check for hdr.network against
skb_tail_pointer(); refactor check to make sure we have tcp header
in non-paged part.
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 17 +++++++++++++++++
1 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index eceb47b..a9d2b0c 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -54,6 +54,7 @@
#include <net/pkt_cls.h>
#include <net/tc_act/tc_gact.h>
#include <net/tc_act/tc_mirred.h>
+#include <net/vxlan.h>
#include "ixgbe.h"
#include "ixgbe_common.h"
@@ -7651,11 +7652,17 @@ static void ixgbe_atr(struct ixgbe_ring *ring,
/* snag network header to get L4 type and address */
skb = first->skb;
hdr.network = skb_network_header(skb);
+ if (unlikely(hdr.network <= skb->data))
+ return;
if (skb->encapsulation &&
first->protocol == htons(ETH_P_IP) &&
hdr.ipv4->protocol == IPPROTO_UDP) {
struct ixgbe_adapter *adapter = q_vector->adapter;
+ if (unlikely(skb_tail_pointer(skb) < hdr.network +
+ VXLAN_HEADROOM))
+ return;
+
/* verify the port is recognized as VXLAN */
if (adapter->vxlan_port &&
udp_hdr(skb)->dest == adapter->vxlan_port)
@@ -7666,6 +7673,12 @@ static void ixgbe_atr(struct ixgbe_ring *ring,
hdr.network = skb_inner_network_header(skb);
}
+ /* Make sure we have at least [minimum IPv4 header + TCP]
+ * or [IPv6 header] bytes
+ */
+ if (unlikely(skb_tail_pointer(skb) < hdr.network + 40))
+ return;
+
/* Currently only IPv4/IPv6 with TCP is supported */
switch (hdr.ipv4->version) {
case IPVERSION:
@@ -7685,6 +7698,10 @@ static void ixgbe_atr(struct ixgbe_ring *ring,
if (l4_proto != IPPROTO_TCP)
return;
+ if (unlikely(skb_tail_pointer(skb) < hdr.network +
+ hlen + sizeof(struct tcphdr)))
+ return;
+
th = (struct tcphdr *)(hdr.network + hlen);
/* skip this packet since the socket is closing */
--
1.7.1
^ permalink raw reply related [flat|nested] 14+ messages in thread
* Re: [Intel-wired-lan] [PATCH V3 RFC 2/2] ixgbe: ixgbe_atr() compute l4_proto only if non-paged data has network/transport headers
2016-10-17 21:12 ` [Intel-wired-lan] " Sowmini Varadhan
@ 2016-10-17 22:29 ` Alexander Duyck
-1 siblings, 0 replies; 14+ messages in thread
From: Alexander Duyck @ 2016-10-17 22:29 UTC (permalink / raw)
To: Sowmini Varadhan, Jeff Kirsher
Cc: Duyck, Alexander H, Netdev, intel-wired-lan
On Mon, Oct 17, 2016 at 2:12 PM, Sowmini Varadhan
<sowmini.varadhan@oracle.com> wrote:
> For some Tx paths (e.g., tpacket_snd()), ixgbe_atr may be
> passed down an sk_buff that has the network and transport
> header in the paged data, so it needs to make sure these
> headers are available in the headlen bytes to calculate the
> l4_proto.
>
> This patch expect that network and transport headers are
> already available in the non-paged header dat. The assumption
> is that the caller has set this up if l4_proto based Tx
> steering is desired.
>
> Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
This all looks correct to me. I would recommend having Jeff pull it
in to be submitted to the net queue.
Reviewed-by: Alexander Duyck <alexander.h.duyck@intel.com>
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Intel-wired-lan] [PATCH V3 RFC 2/2] ixgbe: ixgbe_atr() compute l4_proto only if non-paged data has network/transport headers
@ 2016-10-17 22:29 ` Alexander Duyck
0 siblings, 0 replies; 14+ messages in thread
From: Alexander Duyck @ 2016-10-17 22:29 UTC (permalink / raw)
To: intel-wired-lan
On Mon, Oct 17, 2016 at 2:12 PM, Sowmini Varadhan
<sowmini.varadhan@oracle.com> wrote:
> For some Tx paths (e.g., tpacket_snd()), ixgbe_atr may be
> passed down an sk_buff that has the network and transport
> header in the paged data, so it needs to make sure these
> headers are available in the headlen bytes to calculate the
> l4_proto.
>
> This patch expect that network and transport headers are
> already available in the non-paged header dat. The assumption
> is that the caller has set this up if l4_proto based Tx
> steering is desired.
>
> Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
This all looks correct to me. I would recommend having Jeff pull it
in to be submitted to the net queue.
Reviewed-by: Alexander Duyck <alexander.h.duyck@intel.com>
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: [Intel-wired-lan] [PATCH V3 RFC 2/2] ixgbe: ixgbe_atr() compute l4_proto only if non-paged data has network/transport headers
2016-10-17 22:29 ` Alexander Duyck
@ 2016-10-17 22:37 ` Jeff Kirsher
-1 siblings, 0 replies; 14+ messages in thread
From: Jeff Kirsher @ 2016-10-17 22:37 UTC (permalink / raw)
To: Alexander Duyck, Sowmini Varadhan
Cc: Duyck, Alexander H, Netdev, intel-wired-lan
[-- Attachment #1: Type: text/plain, Size: 995 bytes --]
On Mon, 2016-10-17 at 15:29 -0700, Alexander Duyck wrote:
> On Mon, Oct 17, 2016 at 2:12 PM, Sowmini Varadhan
> <sowmini.varadhan@oracle.com> wrote:
> >
> > For some Tx paths (e.g., tpacket_snd()), ixgbe_atr may be
> > passed down an sk_buff that has the network and transport
> > header in the paged data, so it needs to make sure these
> > headers are available in the headlen bytes to calculate the
> > l4_proto.
> >
> > This patch expect that network and transport headers are
> > already available in the non-paged header dat. The assumption
> > is that the caller has set this up if l4_proto based Tx
> > steering is desired.
> >
> > Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
>
> This all looks correct to me. I would recommend having Jeff pull it
> in to be submitted to the net queue.
>
> Reviewed-by: Alexander Duyck <alexander.h.duyck@intel.com>
Sowmini, can you re-submit this to intel-wired-lan but without the RFC in
the title?
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^ permalink raw reply [flat|nested] 14+ messages in thread
* [Intel-wired-lan] [PATCH V3 RFC 2/2] ixgbe: ixgbe_atr() compute l4_proto only if non-paged data has network/transport headers
@ 2016-10-17 22:37 ` Jeff Kirsher
0 siblings, 0 replies; 14+ messages in thread
From: Jeff Kirsher @ 2016-10-17 22:37 UTC (permalink / raw)
To: intel-wired-lan
On Mon, 2016-10-17 at 15:29 -0700, Alexander Duyck wrote:
> On Mon, Oct 17, 2016 at 2:12 PM, Sowmini Varadhan
> <sowmini.varadhan@oracle.com> wrote:
> >
> > For some Tx paths (e.g., tpacket_snd()), ixgbe_atr may be
> > passed down an sk_buff that has the network and transport
> > header in the paged data, so it needs to make sure these
> > headers are available in the headlen bytes to calculate the
> > l4_proto.
> >
> > This patch expect that network and transport headers are
> > already available in the non-paged header dat.??The assumption
> > is that the caller has set this up if l4_proto based Tx
> > steering is desired.
> >
> > Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
>
> This all looks correct to me.??I would recommend having Jeff pull it
> in to be submitted to the net queue.
>
> Reviewed-by: Alexander Duyck <alexander.h.duyck@intel.com>
Sowmini, can you re-submit this to intel-wired-lan but without the RFC in
the title?
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^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: [Intel-wired-lan] [PATCH V3 RFC 2/2] ixgbe: ixgbe_atr() compute l4_proto only if non-paged data has network/transport headers
2016-10-17 22:37 ` Jeff Kirsher
@ 2016-10-17 22:47 ` Sowmini Varadhan
-1 siblings, 0 replies; 14+ messages in thread
From: Sowmini Varadhan @ 2016-10-17 22:47 UTC (permalink / raw)
To: Jeff Kirsher; +Cc: Alexander Duyck, Duyck, Alexander H, Netdev, intel-wired-lan
On (10/17/16 15:37), Jeff Kirsher wrote:
> > Reviewed-by: Alexander Duyck <alexander.h.duyck@intel.com>
>
> Sowmini, can you re-submit this to intel-wired-lan but without the RFC in
> the title?
V4 resubmitted.. I think I just inadvertently forgot to add Alex as the
reviewed-by.. could you please fix that (or I can resubmit v5 if needed).
--Sowmini
^ permalink raw reply [flat|nested] 14+ messages in thread
* [Intel-wired-lan] [PATCH V3 RFC 2/2] ixgbe: ixgbe_atr() compute l4_proto only if non-paged data has network/transport headers
@ 2016-10-17 22:47 ` Sowmini Varadhan
0 siblings, 0 replies; 14+ messages in thread
From: Sowmini Varadhan @ 2016-10-17 22:47 UTC (permalink / raw)
To: intel-wired-lan
On (10/17/16 15:37), Jeff Kirsher wrote:
> > Reviewed-by: Alexander Duyck <alexander.h.duyck@intel.com>
>
> Sowmini, can you re-submit this to intel-wired-lan but without the RFC in
> the title?
V4 resubmitted.. I think I just inadvertently forgot to add Alex as the
reviewed-by.. could you please fix that (or I can resubmit v5 if needed).
--Sowmini
^ permalink raw reply [flat|nested] 14+ messages in thread
* Re: [Intel-wired-lan] [PATCH V3 RFC 2/2] ixgbe: ixgbe_atr() compute l4_proto only if non-paged data has network/transport headers
2016-10-17 22:47 ` Sowmini Varadhan
@ 2016-10-17 22:48 ` Jeff Kirsher
-1 siblings, 0 replies; 14+ messages in thread
From: Jeff Kirsher @ 2016-10-17 22:48 UTC (permalink / raw)
To: Sowmini Varadhan
Cc: Alexander Duyck, Duyck, Alexander H, Netdev, intel-wired-lan
[-- Attachment #1: Type: text/plain, Size: 500 bytes --]
On Mon, 2016-10-17 at 18:47 -0400, Sowmini Varadhan wrote:
> On (10/17/16 15:37), Jeff Kirsher wrote:
> > > Reviewed-by: Alexander Duyck <alexander.h.duyck@intel.com>
> >
> > Sowmini, can you re-submit this to intel-wired-lan but without the RFC
> in
> > the title?
>
> V4 resubmitted.. I think I just inadvertently forgot to add Alex as the
> reviewed-by.. could you please fix that (or I can resubmit v5 if needed).
No need to resubmit, I can make sure Alex's reviewed-by gets added.
[-- Attachment #2: This is a digitally signed message part --]
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^ permalink raw reply [flat|nested] 14+ messages in thread
* [Intel-wired-lan] [PATCH V3 RFC 2/2] ixgbe: ixgbe_atr() compute l4_proto only if non-paged data has network/transport headers
@ 2016-10-17 22:48 ` Jeff Kirsher
0 siblings, 0 replies; 14+ messages in thread
From: Jeff Kirsher @ 2016-10-17 22:48 UTC (permalink / raw)
To: intel-wired-lan
On Mon, 2016-10-17 at 18:47 -0400, Sowmini Varadhan wrote:
> On (10/17/16 15:37), Jeff Kirsher wrote:
> > > Reviewed-by: Alexander Duyck <alexander.h.duyck@intel.com>
> >?
> > Sowmini, can you re-submit this to intel-wired-lan but without the RFC
> in
> > the title?
>
> V4 resubmitted.. I think I just inadvertently forgot to add Alex as the
> reviewed-by.. could you please fix that (or I can resubmit v5 if needed).
No need to resubmit, I can make sure Alex's reviewed-by gets added.
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^ permalink raw reply [flat|nested] 14+ messages in thread
end of thread, other threads:[~2016-10-17 22:48 UTC | newest]
Thread overview: 14+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-10-17 21:12 [PATCH v3 RFC 0/2] ixgbe: ixgbe_atr() bug fixes Sowmini Varadhan
2016-10-17 21:12 ` [Intel-wired-lan] " Sowmini Varadhan
2016-10-17 21:12 ` [PATCH V3 RFC 1/2] ixgbe: ixgbe_atr() should access udp_hdr(skb) only for UDP packets Sowmini Varadhan
2016-10-17 21:12 ` [Intel-wired-lan] " Sowmini Varadhan
2016-10-17 21:12 ` [PATCH V3 RFC 2/2] ixgbe: ixgbe_atr() compute l4_proto only if non-paged data has network/transport headers Sowmini Varadhan
2016-10-17 21:12 ` [Intel-wired-lan] " Sowmini Varadhan
2016-10-17 22:29 ` Alexander Duyck
2016-10-17 22:29 ` Alexander Duyck
2016-10-17 22:37 ` Jeff Kirsher
2016-10-17 22:37 ` Jeff Kirsher
2016-10-17 22:47 ` Sowmini Varadhan
2016-10-17 22:47 ` Sowmini Varadhan
2016-10-17 22:48 ` Jeff Kirsher
2016-10-17 22:48 ` Jeff Kirsher
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