This bug was fixed in the package linux - 4.15.0-29.31
---------------
linux (4.15.0-29.31) bionic; urgency=medium
* linux: 4.15.0-29.31 -proposed tracker (LP: #1782173)
* [SRU Bionic][Cosmic] kernel panic in ipmi_ssif at msg_done_handler
(LP: #1777716)
- ipmi_ssif: Fix kernel panic at msg_done_handler
* Update to ocxl driver for 18.04.1 (LP: #1775786)
- misc: ocxl: use put_device() instead of device_unregister()
- powerpc: Add TIDR CPU feature for POWER9
- powerpc: Use TIDR CPU feature to control TIDR allocation
- powerpc: use task_pid_nr() for TID allocation
- ocxl: Rename pnv_ocxl_spa_remove_pe to clarify it's action
- ocxl: Expose the thread_id needed for wait on POWER9
- ocxl: Add an IOCTL so userspace knows what OCXL features are available
- ocxl: Document new OCXL IOCTLs
- ocxl: Fix missing unlock on error in afu_ioctl_enable_p9_wait()
* Critical upstream bugfix missing in Ubuntu 18.04 - frequent Xorg crash after
suspend (LP: #1776887)
- ocxl: Document the OCXL_IOCTL_GET_METADATA IOCTL
* Hard LOCKUP observed on stressing Ubuntu 18 04 (LP: #1777194)
- powerpc: use NMI IPI for smp_send_stop
- powerpc: Fix smp_send_stop NMI IPI handling
* IPL: ppc64_cpu --frequency hang with INFO: rcu_sched detected stalls on
CPUs/tasks on w34 and wsbmc016 with 920.1714.20170330n (LP: #1773964)
- rtc: opal: Fix OPAL RTC driver OPAL_BUSY loops
* [Regression] EXT4-fs error (device sda2): ext4_validate_block_bitmap:383:
comm stress-ng: bg 4705: bad block bitmap checksum (LP: #1781709)
- SAUCE: Revert "UBUNTU: SAUCE: ext4: fix ext4_validate_inode_bitmap: comm
stress-ng: Corrupt inode bitmap"
- SAUCE: ext4: check for allocation block validity with block group locked
linux (4.15.0-28.30) bionic; urgency=medium
* linux: 4.15.0-28.30 -proposed tracker (LP: #1781433)
* Cannot set MTU higher than 1500 in Xen instance (LP: #1781413)
- xen-netfront: Fix mismatched rtnl_unlock
- xen-netfront: Update features after registering netdev
linux (4.15.0-27.29) bionic; urgency=medium
* linux: 4.15.0-27.29 -proposed tracker (LP: #1781062)
* [Regression] EXT4-fs error (device sda1): ext4_validate_inode_bitmap:99:
comm stress-ng: Corrupt inode bitmap (LP: #1780137)
- SAUCE: ext4: fix ext4_validate_inode_bitmap: comm stress-ng: Corrupt inode
bitmap
linux (4.15.0-26.28) bionic; urgency=medium
* linux: 4.15.0-26.28 -proposed tracker (LP: #1780112)
* failure to boot with linux-image-4.15.0-24-generic (LP: #1779827) // Cloud-
init causes potentially huge boot delays with 4.15 kernels (LP: #1780062)
- random: Make getrandom() ready earlier
linux (4.15.0-25.27) bionic; urgency=medium
* linux: 4.15.0-25.27 -proposed tracker (LP: #1779354)
* hisi_sas_v3_hw: internal task abort: timeout and not done. (LP: #1777736)
- scsi: hisi_sas: Update a couple of register settings for v3 hw
* hisi_sas: Add missing PHY spinlock init (LP: #1777734)
- scsi: hisi_sas: Add missing PHY spinlock init
* hisi_sas: improve read performance by pre-allocating slot DMA buffers
(LP: #1777727)
- scsi: hisi_sas: use dma_zalloc_coherent()
- scsi: hisi_sas: Use dmam_alloc_coherent()
- scsi: hisi_sas: Pre-allocate slot DMA buffers
* hisi_sas: Failures during host reset (LP: #1777696)
- scsi: hisi_sas: Only process broadcast change in phy_bcast_v3_hw()
- scsi: hisi_sas: Fix the conflict between dev gone and host reset
- scsi: hisi_sas: Adjust task reject period during host reset
- scsi: hisi_sas: Add a flag to filter PHY events during reset
- scsi: hisi_sas: Release all remaining resources in clear nexus ha
* Fake SAS addresses for SATA disks on HiSilicon D05 are non-unique
(LP: #1776750)
- scsi: hisi_sas: make SAS address of SATA disks unique
* Vcs-Git header on bionic linux source package points to zesty git tree
(LP: #1766055)
- [Packaging]: Update Vcs-Git
* large KVM instances run out of IRQ routes (LP: #1778261)
- SAUCE: kvm -- increase KVM_MAX_IRQ_ROUTES to 2048 on x86
-- Stefan Bader <stefan.ba...@canonical.com> Tue, 17 Jul 2018 10:57:50
+0200
** Changed in: linux (Ubuntu Cosmic)
Status: Triaged => Fix Released
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https://bugs.launchpad.net/bugs/1777716
Title:
[SRU Bionic][Cosmic] kernel panic in ipmi_ssif at msg_done_handler
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Bionic:
Fix Released
Status in linux source package in Cosmic:
Fix Released
Bug description:
[Impact]
When you boot bionic with Boot with i2c and ipmi_ssif enabled on Cavium
ThunderX2 systems with a faulty BMC that does not return any data, and the code
is trying to print the value if data[2], we get a kernel panic.
[ 484.728410] Unable to handle kernel NULL pointer dereference at virtual
address 00000002
[ 484.736496] pgd = ffff0000094a2000
[ 484.739885] [00000002] *pgd=00000047fcffe003, *pud=00000047fcffd003,
*pmd=0000000000000000
[ 484.748158] Internal error: Oops: 96000005 [#1] SMP
[...]
[ 485.101451] Call trace:
[...]
[ 485.188473] [<ffff000000a46e68>] msg_done_handler+0x668/0x700 [ipmi_ssif]
[ 485.195249] [<ffff000000a456b8>] ipmi_ssif_thread+0x110/0x128 [ipmi_ssif]
[ 485.202038] [<ffff0000080f1430>] kthread+0x108/0x138
[ 485.206994] [<ffff0000080838e0>] ret_from_fork+0x10/0x30
[ 485.212294] Code: aa1903e1 aa1803e0 b900227f 95fef6a5 (39400aa3)
[Test]
- System with faulty BMC
- Boot with i2c and ipmi_ssif enabled.
[Fix]
Fixed upstream with:
commit f002612b9d86613bc6fde0a444e0095225f6053e
Author: Kamlakant Patel <kamlakant.pa...@cavium.com>
Date: Tue Mar 13 16:32:27 2018 +0530
ipmi_ssif: Fix kernel panic at msg_done_handler
[Regression Potential]
ipmi_ssif is only loaded on ARM64 systems, this issue is observed only on
Cavium ThunderX2 systems with a faulty BMC. The fix does not impact other
architectures or vendor systems. Regression potential is low.
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