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Oracle VM: Dom0 Panic with 'WARNING: CPU: 7 PID: 934 at drivers/scsi/megaraid/kcompat.h:14' (Doc ID 2447785.1)

Last updated on FEBRUARY 03, 2019

Applies to:

Oracle VM - Version 3.4.4 and later
Linux x86-64

Symptoms

Oracle VM server panic with logs below:

[88799.816119] WARNING: CPU: 7 PID: 934 at drivers/scsi/megaraid/kcompat.h:14
megasas_sync_irqs+0x7a/0x90 [megaraid_sas]()
[88799.816120] Modules linked in: tun ocfs2 xen_netback xen_blkback
xen_gntalloc xen_gntdev xen_evtchn xenfs xen_privcmd ocfs2_dlmfs
ocfs2_stack_o2cb ocfs2_dlm ocfs2_nodemanager ocfs2_stackglue configfs bnx2fc
fcoe libfcoe libfc sunrpc bridge 8021q mrp garp stp llc bonding vfat fat
dm_round_robin dm_multipath iTCO_wdt iTCO_vendor_support dcdbas pcspkr
sb_edac edac_core lpc_ich mfd_core shpchp sg ipmi_devintf ipmi_si
ipmi_msghandler ext4 jbd2 mbcache2 sd_mod ahci libahci qla2xxx
scsi_transport_fc megaraid_sas bnx2x ptp pps_core libcrc32c crc32c_intel
be2iscsi bnx2i cnic uio cxgb4i cxgb4 cxgb3i libcxgbi ipv6 cxgb3 mdio
libiscsi_tcp qla4xxx iscsi_boot_sysfs libiscsi scsi_transport_iscsi mxm_wmi
wmi dm_mirror dm_region_hash dm_log dm_mod
[88799.816154] CPU: 7 PID: 934 Comm: scsi_eh_0 Not tainted  4.1.12-112.14.2.el6uek.x86_64 #2
[88799.816155] Hardware name: Dell Inc. PowerEdge M630/0R10KJ, BIOS 2.6.0  10/27/2017
[88799.816156] 0000000000000000 ffff8805363efbf8 ffffffff816eb150 0000000000000000
[88799.816159] 000000000000000e ffff8805363efc38 ffffffff81086f25 ffff8805363efc88
[88799.816161] 0000000000000001 0000000000000010 ffff8805377e07f8 ffff8805377e0000
[88799.816163] Call Trace:
[88799.816169] [<ffffffff816eb150>] dump_stack+0x63/0x83
[88799.816174] [<ffffffff81086f25>] warn_slowpath_common+0x95/0xe0
[88799.816176] [<ffffffff81086f8a>] warn_slowpath_null+0x1a/0x20
[88799.816180] [<ffffffffa031a8ca>] megasas_sync_irqs+0x7a/0x90 [megaraid_sas]
[88799.816185] [<ffffffffa031e2d0>] megasas_reset_fusion+0xd0/0x8b0 [megaraid_sas]
[88799.816189] [<ffffffff810de39f>] ? vprintk_default+0x1f/0x30
[88799.816193] [<ffffffffa0314cbe>] megasas_reset_bus_host+0x8e/0x210 [megaraid_sas]
[88799.816198] [<ffffffff814ca1e6>] scsi_try_host_reset+0x56/0x120
[88799.816200] [<ffffffff814cd649>] scsi_eh_host_reset+0x59/0x180
[88799.816202] [<ffffffff814cd804>] scsi_eh_ready_devs+0x94/0x100
[88799.816204] [<ffffffff814cd97d>] scsi_unjam_host+0x10d/0x230
[88799.816206] [<ffffffff814cdc28>] scsi_error_handler+0x188/0x210
[88799.816207] [<ffffffff814cdaa0>] ? scsi_unjam_host+0x230/0x230
[88799.816209] [<ffffffff814cdaa0>] ? scsi_unjam_host+0x230/0x230
[88799.816213] [<ffffffff810a72de>] kthread+0xce/0xf0
[88799.816215] [<ffffffff810a7210>] kthread_freezable_should_stop+0x70/0x70
[88799.816218] [<ffffffff816f11a2>] ret_from_fork+0x42/0x70
[88799.816220] [<ffffffff810a7210>] kthread_freezable_should_stop+0x70/0x70


Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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