kernel oops

From: Olga Kornievskaia <aglo@umich.edu>
To: Chuck Lever <chuck.lever@oracle.com>
Cc: kernel-tls-handshake@lists.linux.dev
Subject: kernel oops
Date: Fri, 31 Mar 2023 10:23:44 -0400	[thread overview]
Message-ID: <CAN-5tyGvk=yrdA3edJu3SeoQeACMzaeKQDetvVxPQSDN8XTd7w@mail.gmail.com> (raw)

Hi Chuck,

Have you seen this oops? This is not my testing so all I know was that
it was an attempt to mount with xprtsec=tls (against ONTAP).

[  316.939747] BUG: kernel NULL pointer dereference, address: 0000000000000018
[  316.939848] #PF: supervisor read access in kernel mode
[  316.939914] #PF: error_code(0x0000) - not-present page
[  316.939984] PGD 0 P4D 0
[  316.940041] Oops: 0000 [#1] PREEMPT SMP PTI
[  316.940109] CPU: 0 PID: 511 Comm: kworker/u2:30 Kdump: loaded Not
tainted 6.2.1+ #2
[  316.940181] Hardware name: VMware, Inc. VMware7,1/440BX Desktop
Reference Platform, BIOS VMW71.00V.16707776.B64.2008070230 08/07/2020
[  316.940259] Workqueue: xprtiod xs_tls_connect [sunrpc]
[  316.940463] RIP: 0010:xs_tls_connect+0x3e1/0x590 [sunrpc]
[  316.940556] Code: ff ff ff 48 2b 83 f8 fe ff ff 48 89 83 00 ff ff
ff e8 03 d3 ff ff e9 a8 fd ff ff 49 8b 97 f8 05 00 00 66 83 bb e0 f9
ff ff 0a <48> 8b 6a 18 0f 84 fd 00 00 00 48 8d 72 18 4c 89 e7 48 89 14
24 e8
[  316.940719] RSP: 0018:ffffa69d40f5fdc8 EFLAGS: 00010293
[  316.940786] RAX: 0000000000000000 RBX: ffff9b0c46333e40 RCX: 0000000000000000
[  316.940872] RDX: 0000000000000000 RSI: ffffa69d40f5fd20 RDI: 0000000000000000
[  316.940940] RBP: ffff9b0c46350200 R08: ffff9b0cf7e31968 R09: 0000000000000159
[  316.941008] R10: 0000000000000001 R11: 00000049c8887a40 R12: ffff9b0c46333800
[  316.941075] R13: 0000000004208160 R14: ffff9b0c44e18a00 R15: ffff9b0c42dab800
[  316.941159] FS:  0000000000000000(0000) GS:ffff9b0cf7e00000(0000)
knlGS:0000000000000000
[  316.941243] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  316.941309] CR2: 0000000000000018 CR3: 0000000102e48004 CR4: 00000000007706f0
[  316.941391] PKRU: 55555554
[  316.941443] Call Trace:
[  316.941513]  <TASK>
[  316.941578]  process_one_work+0x1b0/0x3c0
[  316.941689]  worker_thread+0x30/0x360
[  316.941755]  ? __pfx_worker_thread+0x10/0x10
[  316.941822]  kthread+0xd7/0x100
[  316.941900]  ? __pfx_kthread+0x10/0x10
[  316.941968]  ret_from_fork+0x29/0x50
[  316.942049]  </TASK>
[  316.942099] Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4
dns_resolver ib_core nfsv3 nfs_acl nfs lockd grace fscache netfs ext4
rfkill mbcache jbd2 loop vsock_loopback
vmw_vsock_virtio_transport_common vmw_vsock_vmci_transport vsock
sunrpc tls vfat fat dm_multipath intel_rapl_msr intel_rapl_common
isst_if_mbox_msr isst_if_common nfit libnvdimm crct10dif_pclmul
crc32_pclmul ghash_clmulni_intel rapl vmw_balloon joydev pcspkr
i2c_piix4 vmw_vmci xfs libcrc32c vmwgfx drm_ttm_helper ttm sr_mod
cdrom drm_kms_helper syscopyarea sd_mod sysfillrect ata_generic
sysimgblt sg ahci libahci ata_piix crc32c_intel serio_raw drm vmxnet3
vmw_pvscsi libata dm_mirror dm_region_hash dm_log dm_mod nvme_tcp
nvme_fabrics nvme_core t10_pi crc64_rocksoft crc64 ipmi_devintf
ipmi_msghandler fuse
[  316.942550] CR2: 0000000000000018

Please note this was still on "commit
caa52379f0046e974fd16585dd7ede624699d8e2 (HEAD -> 03152023-v7,
origin/upcall-v7)". If you think somethings done to address it I'll
have them update to the latest.

Thank you.