From: Leon Romanovsky <leon@kernel.org>
To: Geetha sowjanya <gakula@marvell.com>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
kuba@kernel.org, davem@davemloft.net, edumazet@google.com,
pabeni@redhat.com, richardcochran@gmail.com,
sgoutham@marvell.com, sbhatta@marvell.com, hkelam@marvell.com
Subject: Re: [net PATCH v2 5/9] octeontx2-pf: mcs: Fix NULL pointer dereferences
Date: Wed, 26 Apr 2023 09:51:21 +0300 [thread overview]
Message-ID: <20230426065121.GI27649@unreal> (raw)
In-Reply-To: <20230426062528.20575-6-gakula@marvell.com>
On Wed, Apr 26, 2023 at 11:55:24AM +0530, Geetha sowjanya wrote:
> From: Subbaraya Sundeep <sbhatta@marvell.com>
>
> When system is rebooted after creating macsec interface
> below NULL pointer dereference crashes occurred. This
> patch fixes those crashes by using correct order of teardown
>
> [ 3324.406942] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
> [ 3324.415726] Mem abort info:
> [ 3324.418510] ESR = 0x96000006
> [ 3324.421557] EC = 0x25: DABT (current EL), IL = 32 bits
> [ 3324.426865] SET = 0, FnV = 0
> [ 3324.429913] EA = 0, S1PTW = 0
> [ 3324.433047] Data abort info:
> [ 3324.435921] ISV = 0, ISS = 0x00000006
> [ 3324.439748] CM = 0, WnR = 0
> ....
> [ 3324.575915] Call trace:
> [ 3324.578353] cn10k_mdo_del_secy+0x24/0x180
> [ 3324.582440] macsec_common_dellink+0xec/0x120
> [ 3324.586788] macsec_notify+0x17c/0x1c0
> [ 3324.590529] raw_notifier_call_chain+0x50/0x70
> [ 3324.594965] call_netdevice_notifiers_info+0x34/0x7c
> [ 3324.599921] rollback_registered_many+0x354/0x5bc
> [ 3324.604616] unregister_netdevice_queue+0x88/0x10c
> [ 3324.609399] unregister_netdev+0x20/0x30
> [ 3324.613313] otx2_remove+0x8c/0x310
> [ 3324.616794] pci_device_shutdown+0x30/0x70
> [ 3324.620882] device_shutdown+0x11c/0x204
>
> [ 966.664930] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000
> [ 966.673712] Mem abort info:
> [ 966.676497] ESR = 0x96000006
> [ 966.679543] EC = 0x25: DABT (current EL), IL = 32 bits
> [ 966.684848] SET = 0, FnV = 0
> [ 966.687895] EA = 0, S1PTW = 0
> [ 966.691028] Data abort info:
> [ 966.693900] ISV = 0, ISS = 0x00000006
> [ 966.697729] CM = 0, WnR = 0
> [ 966.833467] Call trace:
> [ 966.835904] cn10k_mdo_stop+0x20/0xa0
> [ 966.839557] macsec_dev_stop+0xe8/0x11c
> [ 966.843384] __dev_close_many+0xbc/0x140
> [ 966.847298] dev_close_many+0x84/0x120
> [ 966.851039] rollback_registered_many+0x114/0x5bc
> [ 966.855735] unregister_netdevice_many.part.0+0x14/0xa0
> [ 966.860952] unregister_netdevice_many+0x18/0x24
> [ 966.865560] macsec_notify+0x1ac/0x1c0
> [ 966.869303] raw_notifier_call_chain+0x50/0x70
> [ 966.873738] call_netdevice_notifiers_info+0x34/0x7c
> [ 966.878694] rollback_registered_many+0x354/0x5bc
> [ 966.883390] unregister_netdevice_queue+0x88/0x10c
> [ 966.888173] unregister_netdev+0x20/0x30
> [ 966.892090] otx2_remove+0x8c/0x310
> [ 966.895571] pci_device_shutdown+0x30/0x70
> [ 966.899660] device_shutdown+0x11c/0x204
> [ 966.903574] __do_sys_reboot+0x208/0x290
> [ 966.907487] __arm64_sys_reboot+0x20/0x30
> [ 966.911489] el0_svc_handler+0x80/0x1c0
> [ 966.915316] el0_svc+0x8/0x180
> [ 966.918362] Code: f9400000 f9400a64 91220014 f94b3403 (f9400060)
> [ 966.924448] ---[ end trace 341778e799c3d8d7 ]---
>
> Fixes: c54ffc73601c ("octeontx2-pf: mcs: Introduce MACSEC hardware offloading")
> Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
> Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
> Signed-off-by: Geetha sowjanya <gakula@marvell.com>
> ---
> drivers/net/ethernet/marvell/octeontx2/nic/otx2_pf.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
Thanks,
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
next prev parent reply other threads:[~2023-04-26 6:51 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-26 6:25 [net PATCH v2 0/9] Macsec fixes for CN10KB Geetha sowjanya
2023-04-26 6:25 ` [net PATCH v2 1/9] octeonxt2-af: mcs: Fix per port bypass config Geetha sowjanya
2023-04-26 6:25 ` [net PATCH v2 2/9] octeontx2-af: mcs: Write TCAM_DATA and TCAM_MASK registers at once Geetha sowjanya
2023-04-26 6:25 ` [net PATCH v2 3/9] octeontx2-af: mcs: Config parser to skip 8B header Geetha sowjanya
2023-04-26 6:25 ` [net PATCH v2 4/9] octeontx2-af: mcs: Fix MCS block interrupt Geetha sowjanya
2023-04-26 6:25 ` [net PATCH v2 5/9] octeontx2-pf: mcs: Fix NULL pointer dereferences Geetha sowjanya
2023-04-26 6:51 ` Leon Romanovsky [this message]
2023-04-26 6:25 ` [net PATCH v2 6/9] octeontx2-pf: mcs: Match macsec ethertype along with DMAC Geetha sowjanya
2023-04-26 6:25 ` [net PATCH v2 7/9] octeontx2-pf: mcs: Clear stats before freeing resource Geetha sowjanya
2023-04-26 6:25 ` [net PATCH v2 8/9] octeontx2-pf: mcs: Fix shared counters logic Geetha sowjanya
2023-04-26 6:25 ` [net PATCH v2 9/9] octeontx2-pf: mcs: Do not reset PN while updating secy Geetha sowjanya
2023-04-27 11:00 ` [net PATCH v2 0/9] Macsec fixes for CN10KB patchwork-bot+netdevbpf
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