LinuxLists.cc - [PATCH iwl-net] i40e: Fix kernel crash during macvlan offloading setup

2023-11-24 16:42:51

Subject: [PATCH iwl-net] i40e: Fix kernel crash during macvlan offloading setup

Function i40e_fwd_add() computes num of created channels and
num of queues per channel according value of pf->num_lan_msix.

This is wrong because the channels are used for subordinated net
devices that reuse existing queues from parent net device and
number of existing queue pairs (pf->num_queue_pairs) should be
used instead.

E.g.:
Let's have (pf->num_lan_msix == 32)... Then we reduce number of
combined queues by ethtool to 8 (so pf->num_queue_pairs == 8).
i40e_fwd_add() called by macvlan then computes number of macvlans
channels to be 16 and queues per channel 1 and calls
i40e_setup_macvlans(). This computes new number of queue pairs
for PF as:

num_qps = vsi->num_queue_pairs - (macvlan_cnt * qcnt);

This is evaluated in this case as:
num_qps = (8 - 16 * 1) = (u16)-8 = 0xFFF8

...and this number is stored vsi->next_base_queue that is used
during channel creation. This leads to kernel crash.

Fix this bug by computing the number of offloaded macvlan devices
and no. their queues according the current number of queues instead
of maximal one.

Reproducer:
1) Enable l2-fwd-offload
2) Reduce number of queues
3) Create macvlan device
4) Make it up

Result:
[root@cnb-03 ~]# ethtool -K enp2s0f0np0 l2-fwd-offload on
[root@cnb-03 ~]# ethtool -l enp2s0f0np0 | grep Combined
Combined: 32
Combined: 32
[root@cnb-03 ~]# ethtool -L enp2s0f0np0 combined 8
[root@cnb-03 ~]# ip link add link enp2s0f0np0 mac0 type macvlan mode bridge
[root@cnb-03 ~]# ip link set mac0 up
...
[ 1225.686698] i40e 0000:02:00.0: User requested queue count/HW max RSS count: 8/32
[ 1242.399103] BUG: kernel NULL pointer dereference, address: 0000000000000118
[ 1242.406064] #PF: supervisor write access in kernel mode
[ 1242.411288] #PF: error_code(0x0002) - not-present page
[ 1242.416417] PGD 0 P4D 0
[ 1242.418950] Oops: 0002 [#1] PREEMPT SMP NOPTI
[ 1242.423308] CPU: 26 PID: 2253 Comm: ip Kdump: loaded Not tainted 6.7.0-rc1+ #20
[ 1242.430607] Hardware name: Abacus electric, s.r.o. - [email protected] Super Server/H12SSW-iN, BIOS 2.4 04/13/2022
[ 1242.440850] RIP: 0010:i40e_channel_config_tx_ring.constprop.0+0xd9/0x180 [i40e]
[ 1242.448165] Code: 48 89 b3 80 00 00 00 48 89 bb 88 00 00 00 74 3c 31 c9 0f b7 53 16 49 8b b4 24 f0 0c 00 00 01 ca 83 c1 01 0f b7 d2 48 8b 34 d6 <48> 89 9e 18 01 00 00 49 8b b4 24 e8 0c 00 00 48 8b 14 d6 48 89 9a
[ 1242.466902] RSP: 0018:ffffa4d52cd2f610 EFLAGS: 00010202
[ 1242.472121] RAX: 0000000000000000 RBX: ffff9390a4ba2e40 RCX: 0000000000000001
[ 1242.479244] RDX: 000000000000fff8 RSI: 0000000000000000 RDI: ffffffffffffffff
[ 1242.486370] RBP: ffffa4d52cd2f650 R08: 0000000000000020 R09: 0000000000000000
[ 1242.493494] R10: 0000000000000000 R11: 0000000100000001 R12: ffff9390b861a000
[ 1242.500626] R13: 00000000000000a0 R14: 0000000000000010 R15: ffff9390b861a000
[ 1242.507751] FS: 00007efda536b740(0000) GS:ffff939f4ec80000(0000) knlGS:0000000000000000
[ 1242.515826] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1242.521564] CR2: 0000000000000118 CR3: 000000010bd48002 CR4: 0000000000770ef0
[ 1242.528699] PKRU: 55555554
[ 1242.531400] Call Trace:
[ 1242.533846] <TASK>
[ 1242.535943] ? __die+0x20/0x70
[ 1242.539004] ? page_fault_oops+0x76/0x170
[ 1242.543018] ? exc_page_fault+0x65/0x150
[ 1242.546942] ? asm_exc_page_fault+0x22/0x30
[ 1242.551131] ? i40e_channel_config_tx_ring.constprop.0+0xd9/0x180 [i40e]
[ 1242.557847] i40e_setup_channel.part.0+0x5f/0x130 [i40e]
[ 1242.563167] i40e_setup_macvlans.constprop.0+0x256/0x420 [i40e]
[ 1242.569099] i40e_fwd_add+0xbf/0x270 [i40e]
[ 1242.573300] macvlan_open+0x16f/0x200 [macvlan]
[ 1242.577831] __dev_open+0xe7/0x1b0
[ 1242.581236] __dev_change_flags+0x1db/0x250
...

Fixes: 1d8d80b4e4ff ("i40e: Add macvlan support on i40e")
Signed-off-by: Ivan Vecera <[email protected]>
---
drivers/net/ethernet/intel/i40e/i40e_main.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
index c36535145a41..7bb1f64833eb 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_main.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
@@ -7981,8 +7981,8 @@ static void *i40e_fwd_add(struct net_device *netdev, struct net_device *vdev)
netdev_info(netdev, "Macvlans are not supported when HW TC offload is on\n");
return ERR_PTR(-EINVAL);
}
- if (pf->num_lan_msix < I40E_MIN_MACVLAN_VECTORS) {
- netdev_info(netdev, "Not enough vectors available to support macvlans\n");
+ if (vsi->num_queue_pairs < I40E_MIN_MACVLAN_VECTORS) {
+ netdev_info(netdev, "Not enough queues to support macvlans\n");
return ERR_PTR(-EINVAL);
}

@@ -8000,7 +8000,7 @@ static void *i40e_fwd_add(struct net_device *netdev, struct net_device *vdev)
* reserve 3/4th of max vectors, then half, then quarter and
* calculate Qs per macvlan as you go
*/
- vectors = pf->num_lan_msix;
+ vectors = vsi->num_queue_pairs;
if (vectors <= I40E_MAX_MACVLANS && vectors > 64) {
/* allocate 4 Qs per macvlan and 32 Qs to the PF*/
q_per_macvlan = 4;
--
2.41.0

2023-11-27 10:33:55

by Wojciech Drewek

[permalink] [raw]

Subject: Re: [PATCH iwl-net] i40e: Fix kernel crash during macvlan offloading setup

On 24.11.2023 17:42, Ivan Vecera wrote:
> Function i40e_fwd_add() computes num of created channels and
> num of queues per channel according value of pf->num_lan_msix.
>
> This is wrong because the channels are used for subordinated net
> devices that reuse existing queues from parent net device and
> number of existing queue pairs (pf->num_queue_pairs) should be
> used instead.
>
> E.g.:
> Let's have (pf->num_lan_msix == 32)... Then we reduce number of
> combined queues by ethtool to 8 (so pf->num_queue_pairs == 8).
> i40e_fwd_add() called by macvlan then computes number of macvlans
> channels to be 16 and queues per channel 1 and calls
> i40e_setup_macvlans(). This computes new number of queue pairs
> for PF as:
>
> num_qps = vsi->num_queue_pairs - (macvlan_cnt * qcnt);
>
> This is evaluated in this case as:
> num_qps = (8 - 16 * 1) = (u16)-8 = 0xFFF8
>
> ...and this number is stored vsi->next_base_queue that is used
> during channel creation. This leads to kernel crash.
>
> Fix this bug by computing the number of offloaded macvlan devices
> and no. their queues according the current number of queues instead
> of maximal one.
>
> Reproducer:
> 1) Enable l2-fwd-offload
> 2) Reduce number of queues
> 3) Create macvlan device
> 4) Make it up
>
> Result:
> [root@cnb-03 ~]# ethtool -K enp2s0f0np0 l2-fwd-offload on
> [root@cnb-03 ~]# ethtool -l enp2s0f0np0 | grep Combined
> Combined: 32
> Combined: 32
> [root@cnb-03 ~]# ethtool -L enp2s0f0np0 combined 8
> [root@cnb-03 ~]# ip link add link enp2s0f0np0 mac0 type macvlan mode bridge
> [root@cnb-03 ~]# ip link set mac0 up
> ...
> [ 1225.686698] i40e 0000:02:00.0: User requested queue count/HW max RSS count: 8/32
> [ 1242.399103] BUG: kernel NULL pointer dereference, address: 0000000000000118
> [ 1242.406064] #PF: supervisor write access in kernel mode
> [ 1242.411288] #PF: error_code(0x0002) - not-present page
> [ 1242.416417] PGD 0 P4D 0
> [ 1242.418950] Oops: 0002 [#1] PREEMPT SMP NOPTI
> [ 1242.423308] CPU: 26 PID: 2253 Comm: ip Kdump: loaded Not tainted 6.7.0-rc1+ #20
> [ 1242.430607] Hardware name: Abacus electric, s.r.o. - [email protected] Super Server/H12SSW-iN, BIOS 2.4 04/13/2022
> [ 1242.440850] RIP: 0010:i40e_channel_config_tx_ring.constprop.0+0xd9/0x180 [i40e]
> [ 1242.448165] Code: 48 89 b3 80 00 00 00 48 89 bb 88 00 00 00 74 3c 31 c9 0f b7 53 16 49 8b b4 24 f0 0c 00 00 01 ca 83 c1 01 0f b7 d2 48 8b 34 d6 <48> 89 9e 18 01 00 00 49 8b b4 24 e8 0c 00 00 48 8b 14 d6 48 89 9a
> [ 1242.466902] RSP: 0018:ffffa4d52cd2f610 EFLAGS: 00010202
> [ 1242.472121] RAX: 0000000000000000 RBX: ffff9390a4ba2e40 RCX: 0000000000000001
> [ 1242.479244] RDX: 000000000000fff8 RSI: 0000000000000000 RDI: ffffffffffffffff
> [ 1242.486370] RBP: ffffa4d52cd2f650 R08: 0000000000000020 R09: 0000000000000000
> [ 1242.493494] R10: 0000000000000000 R11: 0000000100000001 R12: ffff9390b861a000
> [ 1242.500626] R13: 00000000000000a0 R14: 0000000000000010 R15: ffff9390b861a000
> [ 1242.507751] FS: 00007efda536b740(0000) GS:ffff939f4ec80000(0000) knlGS:0000000000000000
> [ 1242.515826] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1242.521564] CR2: 0000000000000118 CR3: 000000010bd48002 CR4: 0000000000770ef0
> [ 1242.528699] PKRU: 55555554
> [ 1242.531400] Call Trace:
> [ 1242.533846] <TASK>
> [ 1242.535943] ? __die+0x20/0x70
> [ 1242.539004] ? page_fault_oops+0x76/0x170
> [ 1242.543018] ? exc_page_fault+0x65/0x150
> [ 1242.546942] ? asm_exc_page_fault+0x22/0x30
> [ 1242.551131] ? i40e_channel_config_tx_ring.constprop.0+0xd9/0x180 [i40e]
> [ 1242.557847] i40e_setup_channel.part.0+0x5f/0x130 [i40e]
> [ 1242.563167] i40e_setup_macvlans.constprop.0+0x256/0x420 [i40e]
> [ 1242.569099] i40e_fwd_add+0xbf/0x270 [i40e]
> [ 1242.573300] macvlan_open+0x16f/0x200 [macvlan]
> [ 1242.577831] __dev_open+0xe7/0x1b0
> [ 1242.581236] __dev_change_flags+0x1db/0x250
> ...
>
> Fixes: 1d8d80b4e4ff ("i40e: Add macvlan support on i40e")
> Signed-off-by: Ivan Vecera <[email protected]>
> ---

Reviewed-by: Wojciech Drewek <[email protected]>

> drivers/net/ethernet/intel/i40e/i40e_main.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c b/drivers/net/ethernet/intel/i40e/i40e_main.c
> index c36535145a41..7bb1f64833eb 100644
> --- a/drivers/net/ethernet/intel/i40e/i40e_main.c
> +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
> @@ -7981,8 +7981,8 @@ static void *i40e_fwd_add(struct net_device *netdev, struct net_device *vdev)
> netdev_info(netdev, "Macvlans are not supported when HW TC offload is on\n");
> return ERR_PTR(-EINVAL);
> }
> - if (pf->num_lan_msix < I40E_MIN_MACVLAN_VECTORS) {
> - netdev_info(netdev, "Not enough vectors available to support macvlans\n");
> + if (vsi->num_queue_pairs < I40E_MIN_MACVLAN_VECTORS) {
> + netdev_info(netdev, "Not enough queues to support macvlans\n");
> return ERR_PTR(-EINVAL);
> }
>
> @@ -8000,7 +8000,7 @@ static void *i40e_fwd_add(struct net_device *netdev, struct net_device *vdev)
> * reserve 3/4th of max vectors, then half, then quarter and
> * calculate Qs per macvlan as you go
> */
> - vectors = pf->num_lan_msix;
> + vectors = vsi->num_queue_pairs;
> if (vectors <= I40E_MAX_MACVLANS && vectors > 64) {
> /* allocate 4 Qs per macvlan and 32 Qs to the PF*/
> q_per_macvlan = 4;

2023-11-29 16:37:32

by Simon Horman

[permalink] [raw]

Subject: Re: [PATCH iwl-net] i40e: Fix kernel crash during macvlan offloading setup

On Fri, Nov 24, 2023 at 05:42:33PM +0100, Ivan Vecera wrote:
> Function i40e_fwd_add() computes num of created channels and
> num of queues per channel according value of pf->num_lan_msix.
>
> This is wrong because the channels are used for subordinated net
> devices that reuse existing queues from parent net device and
> number of existing queue pairs (pf->num_queue_pairs) should be
> used instead.
>
> E.g.:
> Let's have (pf->num_lan_msix == 32)... Then we reduce number of
> combined queues by ethtool to 8 (so pf->num_queue_pairs == 8).
> i40e_fwd_add() called by macvlan then computes number of macvlans
> channels to be 16 and queues per channel 1 and calls
> i40e_setup_macvlans(). This computes new number of queue pairs
> for PF as:
>
> num_qps = vsi->num_queue_pairs - (macvlan_cnt * qcnt);
>
> This is evaluated in this case as:
> num_qps = (8 - 16 * 1) = (u16)-8 = 0xFFF8
>
> ...and this number is stored vsi->next_base_queue that is used
> during channel creation. This leads to kernel crash.
>
> Fix this bug by computing the number of offloaded macvlan devices
> and no. their queues according the current number of queues instead
> of maximal one.
>
> Reproducer:
> 1) Enable l2-fwd-offload
> 2) Reduce number of queues
> 3) Create macvlan device
> 4) Make it up
>
> Result:
> [root@cnb-03 ~]# ethtool -K enp2s0f0np0 l2-fwd-offload on
> [root@cnb-03 ~]# ethtool -l enp2s0f0np0 | grep Combined
> Combined: 32
> Combined: 32
> [root@cnb-03 ~]# ethtool -L enp2s0f0np0 combined 8
> [root@cnb-03 ~]# ip link add link enp2s0f0np0 mac0 type macvlan mode bridge
> [root@cnb-03 ~]# ip link set mac0 up
> ...
> [ 1225.686698] i40e 0000:02:00.0: User requested queue count/HW max RSS count: 8/32
> [ 1242.399103] BUG: kernel NULL pointer dereference, address: 0000000000000118
> [ 1242.406064] #PF: supervisor write access in kernel mode
> [ 1242.411288] #PF: error_code(0x0002) - not-present page
> [ 1242.416417] PGD 0 P4D 0
> [ 1242.418950] Oops: 0002 [#1] PREEMPT SMP NOPTI
> [ 1242.423308] CPU: 26 PID: 2253 Comm: ip Kdump: loaded Not tainted 6.7.0-rc1+ #20
> [ 1242.430607] Hardware name: Abacus electric, s.r.o. - [email protected] Super Server/H12SSW-iN, BIOS 2.4 04/13/2022
> [ 1242.440850] RIP: 0010:i40e_channel_config_tx_ring.constprop.0+0xd9/0x180 [i40e]
> [ 1242.448165] Code: 48 89 b3 80 00 00 00 48 89 bb 88 00 00 00 74 3c 31 c9 0f b7 53 16 49 8b b4 24 f0 0c 00 00 01 ca 83 c1 01 0f b7 d2 48 8b 34 d6 <48> 89 9e 18 01 00 00 49 8b b4 24 e8 0c 00 00 48 8b 14 d6 48 89 9a
> [ 1242.466902] RSP: 0018:ffffa4d52cd2f610 EFLAGS: 00010202
> [ 1242.472121] RAX: 0000000000000000 RBX: ffff9390a4ba2e40 RCX: 0000000000000001
> [ 1242.479244] RDX: 000000000000fff8 RSI: 0000000000000000 RDI: ffffffffffffffff
> [ 1242.486370] RBP: ffffa4d52cd2f650 R08: 0000000000000020 R09: 0000000000000000
> [ 1242.493494] R10: 0000000000000000 R11: 0000000100000001 R12: ffff9390b861a000
> [ 1242.500626] R13: 00000000000000a0 R14: 0000000000000010 R15: ffff9390b861a000
> [ 1242.507751] FS: 00007efda536b740(0000) GS:ffff939f4ec80000(0000) knlGS:0000000000000000
> [ 1242.515826] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 1242.521564] CR2: 0000000000000118 CR3: 000000010bd48002 CR4: 0000000000770ef0
> [ 1242.528699] PKRU: 55555554
> [ 1242.531400] Call Trace:
> [ 1242.533846] <TASK>
> [ 1242.535943] ? __die+0x20/0x70
> [ 1242.539004] ? page_fault_oops+0x76/0x170
> [ 1242.543018] ? exc_page_fault+0x65/0x150
> [ 1242.546942] ? asm_exc_page_fault+0x22/0x30
> [ 1242.551131] ? i40e_channel_config_tx_ring.constprop.0+0xd9/0x180 [i40e]
> [ 1242.557847] i40e_setup_channel.part.0+0x5f/0x130 [i40e]
> [ 1242.563167] i40e_setup_macvlans.constprop.0+0x256/0x420 [i40e]
> [ 1242.569099] i40e_fwd_add+0xbf/0x270 [i40e]
> [ 1242.573300] macvlan_open+0x16f/0x200 [macvlan]
> [ 1242.577831] __dev_open+0xe7/0x1b0
> [ 1242.581236] __dev_change_flags+0x1db/0x250
> ...
>
> Fixes: 1d8d80b4e4ff ("i40e: Add macvlan support on i40e")
> Signed-off-by: Ivan Vecera <[email protected]>

Thanks Ivan,

I agree with the analysis and that the problem was introduced by the cited
patch.

Reviewed-by: Simon Horman <[email protected]>

2023-11-30 19:28:02

by Brelinski, Tony

[permalink] [raw]

Subject: RE: [Intel-wired-lan] [PATCH iwl-net] i40e: Fix kernel crash during macvlan offloading setup

> -----Original Message-----
> From: Intel-wired-lan <[email protected]> On Behalf Of
> Simon Horman
> Sent: Wednesday, November 29, 2023 8:36 AM
> To: ivecera <[email protected]>
> Cc: Harshitha Ramamurthy <[email protected]>; Drewek,
> Wojciech <[email protected]>; [email protected];
> Brandeburg, Jesse <[email protected]>; open list <linux-
> [email protected]>; Eric Dumazet <[email protected]>; Nguyen,
> Anthony L <[email protected]>; Jeff Kirsher
> <[email protected]>; moderated list:INTEL ETHERNET DRIVERS <intel-
> [email protected]>; Keller, Jacob E <[email protected]>; Jakub
> Kicinski <[email protected]>; Paolo Abeni <[email protected]>; David S.
> Miller <[email protected]>
> Subject: Re: [Intel-wired-lan] [PATCH iwl-net] i40e: Fix kernel crash during
> macvlan offloading setup
>
> On Fri, Nov 24, 2023 at 05:42:33PM +0100, Ivan Vecera wrote:
> > Function i40e_fwd_add() computes num of created channels and num of
> > queues per channel according value of pf->num_lan_msix.
> >
> > This is wrong because the channels are used for subordinated net
> > devices that reuse existing queues from parent net device and number
> > of existing queue pairs (pf->num_queue_pairs) should be used instead.
> >
> > E.g.:
> > Let's have (pf->num_lan_msix == 32)... Then we reduce number of
> > combined queues by ethtool to 8 (so pf->num_queue_pairs == 8).
> > i40e_fwd_add() called by macvlan then computes number of macvlans
> > channels to be 16 and queues per channel 1 and calls
> > i40e_setup_macvlans(). This computes new number of queue pairs for PF
> > as:
> >
> > num_qps = vsi->num_queue_pairs - (macvlan_cnt * qcnt);
> >
> > This is evaluated in this case as:
> > num_qps = (8 - 16 * 1) = (u16)-8 = 0xFFF8
> >
> > ...and this number is stored vsi->next_base_queue that is used during
> > channel creation. This leads to kernel crash.
> >
> > Fix this bug by computing the number of offloaded macvlan devices and
> > no. their queues according the current number of queues instead of
> > maximal one.
> >
> > Reproducer:
> > 1) Enable l2-fwd-offload
> > 2) Reduce number of queues
> > 3) Create macvlan device
> > 4) Make it up
> >
> > Result:
> > [root@cnb-03 ~]# ethtool -K enp2s0f0np0 l2-fwd-offload on
> > [root@cnb-03 ~]# ethtool -l enp2s0f0np0 | grep Combined
> > Combined: 32
> > Combined: 32
> > [root@cnb-03 ~]# ethtool -L enp2s0f0np0 combined 8
> > [root@cnb-03 ~]# ip link add link enp2s0f0np0 mac0 type macvlan mode
> > bridge
> > [root@cnb-03 ~]# ip link set mac0 up
> > ...
> > [ 1225.686698] i40e 0000:02:00.0: User requested queue count/HW max
> > RSS count: 8/32 [ 1242.399103] BUG: kernel NULL pointer dereference,
> > address: 0000000000000118 [ 1242.406064] #PF: supervisor write access
> > in kernel mode [ 1242.411288] #PF: error_code(0x0002) - not-present
> > page [ 1242.416417] PGD 0 P4D 0 [ 1242.418950] Oops: 0002 [#1]
> PREEMPT
> > SMP NOPTI [ 1242.423308] CPU: 26 PID: 2253 Comm: ip Kdump: loaded
> Not
> > tainted 6.7.0-rc1+ #20 [ 1242.430607] Hardware name: Abacus electric,
> > s.r.o. - [email protected] Super Server/H12SSW-iN, BIOS 2.4 04/13/2022
> > [ 1242.440850] RIP:
> > 0010:i40e_channel_config_tx_ring.constprop.0+0xd9/0x180 [i40e] [
> > 1242.448165] Code: 48 89 b3 80 00 00 00 48 89 bb 88 00 00 00 74 3c 31
> > c9 0f b7 53 16 49 8b b4 24 f0 0c 00 00 01 ca 83 c1 01 0f b7 d2 48 8b
> > 34 d6 <48> 89 9e 18 01 00 00 49 8b b4 24 e8 0c 00 00 48 8b 14 d6 48 89
> > 9a [ 1242.466902] RSP: 0018:ffffa4d52cd2f610 EFLAGS: 00010202 [
> > 1242.472121] RAX: 0000000000000000 RBX: ffff9390a4ba2e40 RCX:
> > 0000000000000001 [ 1242.479244] RDX: 000000000000fff8 RSI:
> > 0000000000000000 RDI: ffffffffffffffff [ 1242.486370] RBP:
> > ffffa4d52cd2f650 R08: 0000000000000020 R09: 0000000000000000 [
> > 1242.493494] R10: 0000000000000000 R11: 0000000100000001 R12:
> > ffff9390b861a000 [ 1242.500626] R13: 00000000000000a0 R14:
> > 0000000000000010 R15: ffff9390b861a000 [ 1242.507751] FS:
> 00007efda536b740(0000) GS:ffff939f4ec80000(0000)
> knlGS:0000000000000000 [ 1242.515826] CS: 0010 DS: 0000 ES: 0000
> CR0: 0000000080050033 [ 1242.521564] CR2: 0000000000000118 CR3:
> 000000010bd48002 CR4: 0000000000770ef0 [ 1242.528699] PKRU:
> 55555554 [ 1242.531400] Call Trace:
> > [ 1242.533846] <TASK>
> > [ 1242.535943] ? __die+0x20/0x70
> > [ 1242.539004] ? page_fault_oops+0x76/0x170 [ 1242.543018] ?
> > exc_page_fault+0x65/0x150 [ 1242.546942] ?
> > asm_exc_page_fault+0x22/0x30 [ 1242.551131] ?
> > i40e_channel_config_tx_ring.constprop.0+0xd9/0x180 [i40e] [
> > 1242.557847] i40e_setup_channel.part.0+0x5f/0x130 [i40e] [
> > 1242.563167] i40e_setup_macvlans.constprop.0+0x256/0x420 [i40e] [
> > 1242.569099] i40e_fwd_add+0xbf/0x270 [i40e] [ 1242.573300]
> > macvlan_open+0x16f/0x200 [macvlan] [ 1242.577831]
> > __dev_open+0xe7/0x1b0 [ 1242.581236]
> __dev_change_flags+0x1db/0x250
> > ...
> >
> > Fixes: 1d8d80b4e4ff ("i40e: Add macvlan support on i40e")
> > Signed-off-by: Ivan Vecera <[email protected]>
>
> Thanks Ivan,
>
> I agree with the analysis and that the problem was introduced by the cited
> patch.
>
> Reviewed-by: Simon Horman <[email protected]>
>
> _______________________________________________
> Intel-wired-lan mailing list
> [email protected]
> https://lists.osuosl.org/mailman/listinfo/intel-wired-lan

The issue this patch is supposed to fix is resolved by this patch, but now there is a new crash seen with this patch. Crash output below:

Crash logs:

[ 315.844666] i40e 0000:86:00.0: Query for DCB configuration failed, err -EIO aq_err I40E_AQ_RC_EINVAL
[ 315.844678] i40e 0000:86:00.0: DCB init failed -5, disabled
[ 315.873394] i40e 0000:86:00.0: User requested queue count/HW max RSS count: 1/64
[ 315.900682] i40e 0000:86:00.0 eth4: Not enough queues to support macvlans
[ 316.021500] i40e 0000:86:00.0: Query for DCB configuration failed, err -EIO aq_err I40E_AQ_RC_EINVAL
[ 316.021510] i40e 0000:86:00.0: DCB init failed -5, disabled
[ 316.055114] i40e 0000:86:00.0: User requested queue count/HW max RSS count: 3/64
[ 316.314535] i40e 0000:86:00.0: Query for DCB configuration failed, err -EIO aq_err I40E_AQ_RC_EINVAL
[ 316.314544] i40e 0000:86:00.0: DCB init failed -5, disabled
[ 316.341128] i40e 0000:86:00.0: User requested queue count/HW max RSS count: 8/64
[ 316.360934] i40e 0000:86:00.0: Error adding mac filter on macvlan err -EIO, aq_err I40E_AQ_RC_ENOENT
[ 316.360945] mac0: L2fwd offload disabled to L2 filter error
[ 316.423043] i40e 0000:86:00.0: Error adding mac filter on macvlan err -EIO, aq_err I40E_AQ_RC_ENOENT
[ 316.423053] mac0: L2fwd offload disabled to L2 filter error
[ 317.450445] BUG: kernel NULL pointer dereference, address: 00000000000000f4
[ 317.450455] #PF: supervisor read access in kernel mode
[ 317.450460] #PF: error_code(0x0000) - not-present page
[ 317.450465] PGD 0 P4D 0
[ 317.450472] Oops: 0000 [#1] PREEMPT SMP NOPTI
[ 317.450480] CPU: 24 PID: 0 Comm: swapper/24 Kdump: loaded Not tainted 6.7.0-rc2_next-queue_29th-Nov-2023-00580-ga1c79fa9e5cd #1
[ 317.450488] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0010.010620200716 01/06/2020
[ 317.450492] RIP: 0010:i40e_process_skb_fields+0x32/0x200 [i40e]
[ 317.450621] Code: 89 f5 41 54 55 48 89 fd 53 4c 8b 66 08 48 89 d3 4c 89 e2 4d 89 e0 81 e2 ff ff 07 00 41 f6 c4 80 0f 85 84 01 00 00 48 8b 45 18 <f6> 80 f4 00 00 00 80 74 14 4c 89 c0 25 00 30 00 00 48 3d 00 30 00
[ 317.450627] RSP: 0018:ffffc90006f60df0 EFLAGS: 00010246
[ 317.450633] RAX: 0000000000000000 RBX: ffff8881067f4400 RCX: 0000000000000056
[ 317.450638] RDX: 0000000000003003 RSI: ffff888c4918e000 RDI: ffff888c7bf799c0
[ 317.450642] RBP: ffff888c7bf799c0 R08: 0000159780003003 R09: ffff888107f3e0c0
[ 317.450646] R10: ffff888c4918e000 R11: ffffc90006f60ff8 R12: 0000159780003003
[ 317.450650] R13: ffff888c4918e000 R14: ffff8881067f4400 R15: ffff888c7bf799c0
[ 317.450654] FS: 0000000000000000(0000) GS:ffff88980f200000(0000) knlGS:0000000000000000
[ 317.450659] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 317.450663] CR2: 00000000000000f4 CR3: 0000000761020006 CR4: 00000000007706f0
[ 317.450667] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 317.450671] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 317.450674] PKRU: 55555554
[ 317.450677] Call Trace:
[ 317.450684] <IRQ>
[ 317.450689] ? __die+0x20/0x70
[ 317.450704] ? page_fault_oops+0x76/0x170
[ 317.450716] ? exc_page_fault+0x65/0x150
[ 317.450727] ? asm_exc_page_fault+0x22/0x30
[ 317.450737] ? i40e_process_skb_fields+0x32/0x200 [i40e]
[ 317.450845] i40e_clean_rx_irq+0x5e3/0x7e0 [i40e]
[ 317.450943] i40e_napi_poll+0x13a/0x4f0 [i40e]
[ 317.451037] __napi_poll+0x29/0x1b0
[ 317.451046] net_rx_action+0x29b/0x370
[ 317.451052] ? __napi_schedule_irqoff+0x58/0xa0
[ 317.451062] __do_softirq+0xc8/0x2a8
[ 317.451071] irq_exit_rcu+0xa6/0xc0
[ 317.451080] common_interrupt+0x80/0xa0
[ 317.451086] </IRQ>
[ 317.451089] <TASK>
[ 317.451091] asm_common_interrupt+0x22/0x40
[ 317.451097] RIP: 0010:cpuidle_enter_state+0xc2/0x420
[ 317.451107] Code: 00 e8 12 53 4c ff e8 4d f4 ff ff 8b 53 04 49 89 c5 0f 1f 44 00 00 31 ff e8 8b 2c 4b ff 45 84 ff 0f 85 3a 02 00 00 fb 45 85 f6 <0f> 88 6e 01 00 00 49 63 d6 4c 2b 2c 24 48 8d 04 52 48 8d 04 82 49
[ 317.451113] RSP: 0018:ffffc90004847e80 EFLAGS: 00000206
[ 317.451118] RAX: ffff88980f232040 RBX: ffff88980f23d600 RCX: 000000000000001f
[ 317.451122] RDX: 0000000000000018 RSI: 000000003d188150 RDI: 0000000000000000
[ 317.451126] RBP: 0000000000000003 R08: 00000049e9852dad R09: 0000000000000000
[ 317.451130] R10: 0000000000000210 R11: ffff88980f230c24 R12: ffffffff940b3a60
[ 317.451134] R13: 00000049e9852dad R14: 0000000000000003 R15: 0000000000000000
[ 317.451143] cpuidle_enter+0x29/0x40
[ 317.451157] cpuidle_idle_call+0xfa/0x160
[ 317.451171] do_idle+0x7b/0xe0
[ 317.451179] cpu_startup_entry+0x26/0x30
[ 317.451188] start_secondary+0x115/0x140
[ 317.451196] secondary_startup_64_no_verify+0x17d/0x18b
[ 317.451210] </TASK>
[ 317.451212] Modules linked in: macvlan snd_seq_dummy snd_hrtimer snd_seq snd_timer snd_seq_device snd soundcore qrtr rfkill vfat fat xfs libcrc32c rpcrdma sunrpc rdma_ucm ib_srpt ib_isert iscsi_target_mod intel_rapl_msr intel_rapl_common intel_uncore_frequency intel_uncore_frequency_common target_core_mod ib_iser isst_if_common skx_edac libiscsi nfit scsi_transport_iscsi libnvdimm rdma_cm ipmi_ssif iw_cm x86_pkg_temp_thermal intel_powerclamp ib_cm coretemp kvm_intel kvm irqbypass rapl intel_cstate irdma iTCO_wdt ib_uverbs iTCO_vendor_support intel_uncore acpi_ipmi mei_me pcspkr ipmi_si i2c_i801 ib_core mei ipmi_devintf i2c_smbus lpc_ich ioatdma intel_pch_thermal ipmi_msghandler joydev acpi_power_meter acpi_pad ext4 mbcache jbd2 ast drm_shmem_helper drm_kms_helper sd_mod t10_pi sg ice ixgbe drm i40e ahci crct10dif_pclmul libahci crc32_pclmul igb crc32c_intel ghash_clmulni_intel libata mdio i2c_algo_bit dca gnss wmi fuse [last unloaded: macvlan]
[ 317.451344] CR2: 00000000000000f4

Thanks,
Tony B.

2023-11-30 19:39:53

by Ivan Vecera

[permalink] [raw]

Subject: Re: [Intel-wired-lan] [PATCH iwl-net] i40e: Fix kernel crash during macvlan offloading setup

On 30. 11. 23 20:24, Brelinski, Tony wrote:
>> -----Original Message-----
>> From: Intel-wired-lan <[email protected]> On Behalf Of
>> Simon Horman
>> Sent: Wednesday, November 29, 2023 8:36 AM
>> To: ivecera <[email protected]>
>> Cc: Harshitha Ramamurthy <[email protected]>; Drewek,
>> Wojciech <[email protected]>; [email protected];
>> Brandeburg, Jesse <[email protected]>; open list <linux-
>> [email protected]>; Eric Dumazet <[email protected]>; Nguyen,
>> Anthony L <[email protected]>; Jeff Kirsher
>> <[email protected]>; moderated list:INTEL ETHERNET DRIVERS <intel-
>> [email protected]>; Keller, Jacob E <[email protected]>; Jakub
>> Kicinski <[email protected]>; Paolo Abeni <[email protected]>; David S.
>> Miller <[email protected]>
>> Subject: Re: [Intel-wired-lan] [PATCH iwl-net] i40e: Fix kernel crash during
>> macvlan offloading setup
>>
>> On Fri, Nov 24, 2023 at 05:42:33PM +0100, Ivan Vecera wrote:
>>> Function i40e_fwd_add() computes num of created channels and num of
>>> queues per channel according value of pf->num_lan_msix.
>>>
>>> This is wrong because the channels are used for subordinated net
>>> devices that reuse existing queues from parent net device and number
>>> of existing queue pairs (pf->num_queue_pairs) should be used instead.
>>>
>>> E.g.:
>>> Let's have (pf->num_lan_msix == 32)... Then we reduce number of
>>> combined queues by ethtool to 8 (so pf->num_queue_pairs == 8).
>>> i40e_fwd_add() called by macvlan then computes number of macvlans
>>> channels to be 16 and queues per channel 1 and calls
>>> i40e_setup_macvlans(). This computes new number of queue pairs for PF
>>> as:
>>>
>>> num_qps = vsi->num_queue_pairs - (macvlan_cnt * qcnt);
>>>
>>> This is evaluated in this case as:
>>> num_qps = (8 - 16 * 1) = (u16)-8 = 0xFFF8
>>>
>>> ...and this number is stored vsi->next_base_queue that is used during
>>> channel creation. This leads to kernel crash.
>>>
>>> Fix this bug by computing the number of offloaded macvlan devices and
>>> no. their queues according the current number of queues instead of
>>> maximal one.
>>>
>>> Reproducer:
>>> 1) Enable l2-fwd-offload
>>> 2) Reduce number of queues
>>> 3) Create macvlan device
>>> 4) Make it up
>>>
>>> Result:
>>> [root@cnb-03 ~]# ethtool -K enp2s0f0np0 l2-fwd-offload on
>>> [root@cnb-03 ~]# ethtool -l enp2s0f0np0 | grep Combined
>>> Combined: 32
>>> Combined: 32
>>> [root@cnb-03 ~]# ethtool -L enp2s0f0np0 combined 8
>>> [root@cnb-03 ~]# ip link add link enp2s0f0np0 mac0 type macvlan mode
>>> bridge
>>> [root@cnb-03 ~]# ip link set mac0 up
>>> ...
>>> [ 1225.686698] i40e 0000:02:00.0: User requested queue count/HW max
>>> RSS count: 8/32 [ 1242.399103] BUG: kernel NULL pointer dereference,
>>> address: 0000000000000118 [ 1242.406064] #PF: supervisor write access
>>> in kernel mode [ 1242.411288] #PF: error_code(0x0002) - not-present
>>> page [ 1242.416417] PGD 0 P4D 0 [ 1242.418950] Oops: 0002 [#1]
>> PREEMPT
>>> SMP NOPTI [ 1242.423308] CPU: 26 PID: 2253 Comm: ip Kdump: loaded
>> Not
>>> tainted 6.7.0-rc1+ #20 [ 1242.430607] Hardware name: Abacus electric,
>>> s.r.o. - [email protected] Super Server/H12SSW-iN, BIOS 2.4 04/13/2022
>>> [ 1242.440850] RIP:
>>> 0010:i40e_channel_config_tx_ring.constprop.0+0xd9/0x180 [i40e] [
>>> 1242.448165] Code: 48 89 b3 80 00 00 00 48 89 bb 88 00 00 00 74 3c 31
>>> c9 0f b7 53 16 49 8b b4 24 f0 0c 00 00 01 ca 83 c1 01 0f b7 d2 48 8b
>>> 34 d6 <48> 89 9e 18 01 00 00 49 8b b4 24 e8 0c 00 00 48 8b 14 d6 48 89
>>> 9a [ 1242.466902] RSP: 0018:ffffa4d52cd2f610 EFLAGS: 00010202 [
>>> 1242.472121] RAX: 0000000000000000 RBX: ffff9390a4ba2e40 RCX:
>>> 0000000000000001 [ 1242.479244] RDX: 000000000000fff8 RSI:
>>> 0000000000000000 RDI: ffffffffffffffff [ 1242.486370] RBP:
>>> ffffa4d52cd2f650 R08: 0000000000000020 R09: 0000000000000000 [
>>> 1242.493494] R10: 0000000000000000 R11: 0000000100000001 R12:
>>> ffff9390b861a000 [ 1242.500626] R13: 00000000000000a0 R14:
>>> 0000000000000010 R15: ffff9390b861a000 [ 1242.507751] FS:
>> 00007efda536b740(0000) GS:ffff939f4ec80000(0000)
>> knlGS:0000000000000000 [ 1242.515826] CS: 0010 DS: 0000 ES: 0000
>> CR0: 0000000080050033 [ 1242.521564] CR2: 0000000000000118 CR3:
>> 000000010bd48002 CR4: 0000000000770ef0 [ 1242.528699] PKRU:
>> 55555554 [ 1242.531400] Call Trace:
>>> [ 1242.533846] <TASK>
>>> [ 1242.535943] ? __die+0x20/0x70
>>> [ 1242.539004] ? page_fault_oops+0x76/0x170 [ 1242.543018] ?
>>> exc_page_fault+0x65/0x150 [ 1242.546942] ?
>>> asm_exc_page_fault+0x22/0x30 [ 1242.551131] ?
>>> i40e_channel_config_tx_ring.constprop.0+0xd9/0x180 [i40e] [
>>> 1242.557847] i40e_setup_channel.part.0+0x5f/0x130 [i40e] [
>>> 1242.563167] i40e_setup_macvlans.constprop.0+0x256/0x420 [i40e] [
>>> 1242.569099] i40e_fwd_add+0xbf/0x270 [i40e] [ 1242.573300]
>>> macvlan_open+0x16f/0x200 [macvlan] [ 1242.577831]
>>> __dev_open+0xe7/0x1b0 [ 1242.581236]
>> __dev_change_flags+0x1db/0x250
>>> ...
>>>
>>> Fixes: 1d8d80b4e4ff ("i40e: Add macvlan support on i40e")
>>> Signed-off-by: Ivan Vecera <[email protected]>
>>
>> Thanks Ivan,
>>
>> I agree with the analysis and that the problem was introduced by the cited
>> patch.
>>
>> Reviewed-by: Simon Horman <[email protected]>
>>
>> _______________________________________________
>> Intel-wired-lan mailing list
>> [email protected]
>> https://lists.osuosl.org/mailman/listinfo/intel-wired-lan
>
> The issue this patch is supposed to fix is resolved by this patch, but now there is a new crash seen with this patch. Crash output below:

Hi, could you please share the reproducer?

Thanks,
Ivan

> Crash logs:
>
> [ 315.844666] i40e 0000:86:00.0: Query for DCB configuration failed, err -EIO aq_err I40E_AQ_RC_EINVAL
> [ 315.844678] i40e 0000:86:00.0: DCB init failed -5, disabled
> [ 315.873394] i40e 0000:86:00.0: User requested queue count/HW max RSS count: 1/64
> [ 315.900682] i40e 0000:86:00.0 eth4: Not enough queues to support macvlans
> [ 316.021500] i40e 0000:86:00.0: Query for DCB configuration failed, err -EIO aq_err I40E_AQ_RC_EINVAL
> [ 316.021510] i40e 0000:86:00.0: DCB init failed -5, disabled
> [ 316.055114] i40e 0000:86:00.0: User requested queue count/HW max RSS count: 3/64
> [ 316.314535] i40e 0000:86:00.0: Query for DCB configuration failed, err -EIO aq_err I40E_AQ_RC_EINVAL
> [ 316.314544] i40e 0000:86:00.0: DCB init failed -5, disabled
> [ 316.341128] i40e 0000:86:00.0: User requested queue count/HW max RSS count: 8/64
> [ 316.360934] i40e 0000:86:00.0: Error adding mac filter on macvlan err -EIO, aq_err I40E_AQ_RC_ENOENT
> [ 316.360945] mac0: L2fwd offload disabled to L2 filter error
> [ 316.423043] i40e 0000:86:00.0: Error adding mac filter on macvlan err -EIO, aq_err I40E_AQ_RC_ENOENT
> [ 316.423053] mac0: L2fwd offload disabled to L2 filter error
> [ 317.450445] BUG: kernel NULL pointer dereference, address: 00000000000000f4
> [ 317.450455] #PF: supervisor read access in kernel mode
> [ 317.450460] #PF: error_code(0x0000) - not-present page
> [ 317.450465] PGD 0 P4D 0
> [ 317.450472] Oops: 0000 [#1] PREEMPT SMP NOPTI
> [ 317.450480] CPU: 24 PID: 0 Comm: swapper/24 Kdump: loaded Not tainted 6.7.0-rc2_next-queue_29th-Nov-2023-00580-ga1c79fa9e5cd #1
> [ 317.450488] Hardware name: Intel Corporation S2600WFT/S2600WFT, BIOS SE5C620.86B.02.01.0010.010620200716 01/06/2020
> [ 317.450492] RIP: 0010:i40e_process_skb_fields+0x32/0x200 [i40e]
> [ 317.450621] Code: 89 f5 41 54 55 48 89 fd 53 4c 8b 66 08 48 89 d3 4c 89 e2 4d 89 e0 81 e2 ff ff 07 00 41 f6 c4 80 0f 85 84 01 00 00 48 8b 45 18 <f6> 80 f4 00 00 00 80 74 14 4c 89 c0 25 00 30 00 00 48 3d 00 30 00
> [ 317.450627] RSP: 0018:ffffc90006f60df0 EFLAGS: 00010246
> [ 317.450633] RAX: 0000000000000000 RBX: ffff8881067f4400 RCX: 0000000000000056
> [ 317.450638] RDX: 0000000000003003 RSI: ffff888c4918e000 RDI: ffff888c7bf799c0
> [ 317.450642] RBP: ffff888c7bf799c0 R08: 0000159780003003 R09: ffff888107f3e0c0
> [ 317.450646] R10: ffff888c4918e000 R11: ffffc90006f60ff8 R12: 0000159780003003
> [ 317.450650] R13: ffff888c4918e000 R14: ffff8881067f4400 R15: ffff888c7bf799c0
> [ 317.450654] FS: 0000000000000000(0000) GS:ffff88980f200000(0000) knlGS:0000000000000000
> [ 317.450659] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 317.450663] CR2: 00000000000000f4 CR3: 0000000761020006 CR4: 00000000007706f0
> [ 317.450667] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [ 317.450671] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> [ 317.450674] PKRU: 55555554
> [ 317.450677] Call Trace:
> [ 317.450684] <IRQ>
> [ 317.450689] ? __die+0x20/0x70
> [ 317.450704] ? page_fault_oops+0x76/0x170
> [ 317.450716] ? exc_page_fault+0x65/0x150
> [ 317.450727] ? asm_exc_page_fault+0x22/0x30
> [ 317.450737] ? i40e_process_skb_fields+0x32/0x200 [i40e]
> [ 317.450845] i40e_clean_rx_irq+0x5e3/0x7e0 [i40e]
> [ 317.450943] i40e_napi_poll+0x13a/0x4f0 [i40e]
> [ 317.451037] __napi_poll+0x29/0x1b0
> [ 317.451046] net_rx_action+0x29b/0x370
> [ 317.451052] ? __napi_schedule_irqoff+0x58/0xa0
> [ 317.451062] __do_softirq+0xc8/0x2a8
> [ 317.451071] irq_exit_rcu+0xa6/0xc0
> [ 317.451080] common_interrupt+0x80/0xa0
> [ 317.451086] </IRQ>
> [ 317.451089] <TASK>
> [ 317.451091] asm_common_interrupt+0x22/0x40
> [ 317.451097] RIP: 0010:cpuidle_enter_state+0xc2/0x420
> [ 317.451107] Code: 00 e8 12 53 4c ff e8 4d f4 ff ff 8b 53 04 49 89 c5 0f 1f 44 00 00 31 ff e8 8b 2c 4b ff 45 84 ff 0f 85 3a 02 00 00 fb 45 85 f6 <0f> 88 6e 01 00 00 49 63 d6 4c 2b 2c 24 48 8d 04 52 48 8d 04 82 49
> [ 317.451113] RSP: 0018:ffffc90004847e80 EFLAGS: 00000206
> [ 317.451118] RAX: ffff88980f232040 RBX: ffff88980f23d600 RCX: 000000000000001f
> [ 317.451122] RDX: 0000000000000018 RSI: 000000003d188150 RDI: 0000000000000000
> [ 317.451126] RBP: 0000000000000003 R08: 00000049e9852dad R09: 0000000000000000
> [ 317.451130] R10: 0000000000000210 R11: ffff88980f230c24 R12: ffffffff940b3a60
> [ 317.451134] R13: 00000049e9852dad R14: 0000000000000003 R15: 0000000000000000
> [ 317.451143] cpuidle_enter+0x29/0x40
> [ 317.451157] cpuidle_idle_call+0xfa/0x160
> [ 317.451171] do_idle+0x7b/0xe0
> [ 317.451179] cpu_startup_entry+0x26/0x30
> [ 317.451188] start_secondary+0x115/0x140
> [ 317.451196] secondary_startup_64_no_verify+0x17d/0x18b
> [ 317.451210] </TASK>
> [ 317.451212] Modules linked in: macvlan snd_seq_dummy snd_hrtimer snd_seq snd_timer snd_seq_device snd soundcore qrtr rfkill vfat fat xfs libcrc32c rpcrdma sunrpc rdma_ucm ib_srpt ib_isert iscsi_target_mod intel_rapl_msr intel_rapl_common intel_uncore_frequency intel_uncore_frequency_common target_core_mod ib_iser isst_if_common skx_edac libiscsi nfit scsi_transport_iscsi libnvdimm rdma_cm ipmi_ssif iw_cm x86_pkg_temp_thermal intel_powerclamp ib_cm coretemp kvm_intel kvm irqbypass rapl intel_cstate irdma iTCO_wdt ib_uverbs iTCO_vendor_support intel_uncore acpi_ipmi mei_me pcspkr ipmi_si i2c_i801 ib_core mei ipmi_devintf i2c_smbus lpc_ich ioatdma intel_pch_thermal ipmi_msghandler joydev acpi_power_meter acpi_pad ext4 mbcache jbd2 ast drm_shmem_helper drm_kms_helper sd_mod t10_pi sg ice ixgbe drm i40e ahci crct10dif_pclmul libahci crc32_pclmul igb crc32c_intel ghash_clmulni_intel libata mdio i2c_algo_bit dca gnss wmi fuse [last unloaded: macvlan]
> [ 317.451344] CR2: 00000000000000f4
>
> Thanks,
> Tony B.
>

2023-12-01 13:46:59

by Ivan Vecera

[permalink] [raw]