This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1944586
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Tags added: focal
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1944586
Title:
kernel bug found when disconnecting one fiber channel interface on
Cisco Chassis with fnic DRV_VERSION " 1.6.0.47"
Status in linux package in Ubuntu:
Incomplete
Bug description:
[Impact]
It has been brought to my attention the following:
"
We have been experiencing node lockups and degradation when testing fiber
channel fail over for multi-path PURESTORAGE drives.
Testing usually consists of either failing over the fabric or the
local I/O module for the Cisco chassis which houses a number of
individual blades.
After rebooting a local Chassis I/O module we see commands like multipath -ll
hanging.
Resetting the blades individual fiber channel interface results in the
following messages.
"
6051160.241383] rport-9:0-1: blocked FC remote port time out: removing
target and saving binding
[6051160.252901] BUG: kernel NULL pointer dereference, address:
0000000000000040
[6051160.262267] #PF: supervisor read access in kernel mode
[6051160.269314] #PF: error_code(0x0000) - not-present page
[6051160.276016] PGD 0 P4D 0
[6051160.279807] Oops: 0000 [#1] SMP NOPTI
[6051160.284642] CPU: 10 PID: 49346 Comm: kworker/10:2 Tainted: P O
5.4.0-77-generic #86-Ubuntu
[6051160.295967] Hardware name: Cisco Systems Inc UCSB-B200-M5/UCSB-B200-M5,
BIOS B200M5.4.1.1d.0.0609200543 06/09/2020
[6051160.308199] Workqueue: fc_dl_9 fc_timeout_deleted_rport
[scsi_transport_fc]
[6051160.316640] RIP: 0010:fnic_terminate_rport_io+0x10f/0x510 [fnic]
[6051160.324050] Code: 48 89 c3 48 85 c0 0f 84 7b 02 00 00 48 05 20 01 00 00
48 89 45 b0 0f 84 6b 02 00 00 48 8b 83 58 01 00 00 48 8b 80 b8 01 00 00 <48> 8b
78 40 e8 68 e6 06 00 85 c0 0f 84 4c 02 00 00 48 8b 83 58 01
[6051160.346553] RSP: 0018:ffffbc224f297d90 EFLAGS: 00010082
[6051160.353115] RAX: 0000000000000000 RBX: ffff90abdd4c4b00 RCX:
ffff90d8ab2c2bb0
[6051160.361983] RDX: ffff90d8b5467400 RSI: 0000000000000000 RDI:
ffff90d8ab3b4b40
[6051160.370812] RBP: ffffbc224f297df8 R08: ffff90d8c08978c8 R09:
ffff90d8b8850800
[6051160.379518] R10: ffff90d8a59d64c0 R11: 0000000000000001 R12:
ffff90d8ab2c31f8
[6051160.388242] R13: 0000000000000000 R14: 0000000000000246 R15:
ffff90d8ab2c27b8
[6051160.396953] FS: 0000000000000000(0000) GS:ffff90d8c0880000(0000)
knlGS:0000000000000000
[6051160.406838] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[6051160.414168] CR2: 0000000000000040 CR3: 0000000fc1c0a004 CR4:
00000000007626e0
[6051160.423146] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[6051160.431884] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[6051160.440615] PKRU: 55555554
[6051160.444337] Call Trace:
[6051160.447841] fc_terminate_rport_io+0x56/0x70 [scsi_transport_fc]
[6051160.455263] fc_timeout_deleted_rport.cold+0x1bc/0x2c7
[scsi_transport_fc]
[6051160.463623] process_one_work+0x1eb/0x3b0
[6051160.468784] worker_thread+0x4d/0x400
[6051160.473660] kthread+0x104/0x140
[6051160.478102] ? process_one_work+0x3b0/0x3b0
[6051160.483439] ? kthread_park+0x90/0x90
[6051160.488213] ret_from_fork+0x1f/0x40
[6051160.492901] Modules linked in: dm_service_time zfs(PO) zunicode(PO)
zlua(PO) zavl(PO) icp(PO) zcommon(PO) znvpair(PO) spl(O) ebtable_filter
ebtables ip6table_raw ip6table_mangle ip6table_nat iptable_raw iptable_mangle
iptable_nat nf_nat vhost_vsock vmw_vsock_virtio_transport_common vsock
unix_diag nf_conntrack_netlink nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4
vhost_net vhost tap 8021q garp mrp bluetooth ecdh_generic ecc tcp_diag
inet_diag sctp nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter
bpfilter bridge stp llc nls_iso8859_1 dm_queue_length dm_multipath scsi_dh_rdac
scsi_dh_emc scsi_dh_alua intel_rapl_msr intel_rapl_common isst_if_common
skx_edac nfit x86_pkg_temp_thermal intel_powerclamp ipmi_ssif coretemp
kvm_intel kvm rapl input_leds joydev intel_cstate mei_me ioatdma mei dca
ipmi_si ipmi_devintf ipmi_msghandler acpi_power_meter acpi_pad mac_hid
sch_fq_codel ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456
async_raid6_recov async_memcpy async_pq async_xor
[6051160.492928] async_tx xor raid6_pq libcrc32c raid1 raid0 multipath
linear fnic mgag200 drm_vram_helper i2c_algo_bit ttm drm_kms_helper
crct10dif_pclmul syscopyarea hid_generic crc32_pclmul libfcoe sysfillrect
ghash_clmulni_intel sysimgblt aesni_intel fb_sys_fops crypto_simd libfc usbhid
cryptd scsi_transport_fc hid drm glue_helper enic ahci lpc_ich libahci wmi
[6051160.632623] CR2: 0000000000000040
[6051160.637043] ---[ end trace 236e6f4850146477 ]---
[Test Plan]
[Where problems could occur]
[Other informations]
https://support.oracle.com/knowledge/Oracle%20Linux%20and%20Virtualization/2792832_1.html#FIX
https://www.spinics.net/lists/linux-scsi/msg142179.html
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1944586/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : [email protected]
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
