vfs_mountroot: cannot mount root panic after upgrading to SRU 69 and later (Doc ID 3076641.1)

Last updated on MARCH 14, 2025

Applies to:

Symptoms

{0} ok boot -sv
Boot device: /pci@300/pci@2/pci@0/pci@14/LSI,sas@0/disk@w5002538f3190a13d,0:a File and args: -sv
...

SunOS Release 5.11 Version 11.4.70.170.1 64-bit                                  ◄▬▬▬▬▬▬ SRU 69 and above
Copyright (c) 1983, 2024, Oracle and/or its affiliates.
Ethernet address = 0:10:e0:c0:1a:44
mem = 62.5G (0xfa0000000)
avail mem = 64720879616
root nexus = SPARC S7-2
pseudo0 at root
pseudo0 is /pseudo
scsi_vhci0 at root
scsi_vhci0 is /scsi_vhci
virtual-device: cnex0
cnex0 is /virtual-devices@100/channel-devices@200
channel-device: vpci0
px0 at root: 0x300 0x0
px0 is /pci@300
PCI Express-device: pci@2, pcieb1
pcieb1 is /pci@300/pci@2
PCIE-device: pci@0, pcieb7
pcieb7 is /pci@300/pci@2/pci@0
PCIE-device: pci@14, pcieb13
pcieb13 is /pci@300/pci@2/pci@0/pci@14
PCIE-device: LSI,sas@0, lsc0
lsc0 is /pci@300/pci@2/pci@0/pci@14/LSI,sas@0                                      ◄▬▬▬▬▬▬ lsc driver
/pci@300/pci@2/pci@0/pci@14/LSI,sas@0/iport@4 (lsc1) online
/pci@300/pci@2/pci@0/pci@14/LSI,sas@0/iport@8 (lsc2) online
sd5 at scsi_vhci0: unit-address g5002538f3190a140: f_sym
sd5 is /scsi_vhci/disk@g5002538f3190a140
/scsi_vhci/disk@g5002538f3190a140 (sd5) online
/scsi_vhci/disk@g5002538f3190a140 (sd5) multipath status: degraded: path 1 lsc1/disk@p2,0 is online
sd4 at scsi_vhci0: unit-address g5002538f3190a13d: f_sym
sd4 is /scsi_vhci/disk@g5002538f3190a13d
/scsi_vhci/disk@g5002538f3190a13d (sd4) online
/scsi_vhci/disk@g5002538f3190a13d (sd4) multipath status: degraded: path 2 lsc2/disk@p3,0 is online
NOTICE: Can not read the pool label from '/pci@300/pci@2/pci@0/pci@14/LSI,sas@0/disk@w5002538f3190a13d,0:a'
NOTICE: spa_import_rootpool: error 5
Cannot mount root on /pci@300/pci@2/pci@0/pci@14/LSI,sas@0/disk@w5002538f3190a13d,0:a fstype zfs

panic[cpu0]/thread=20012000: vfs_mountroot: cannot mount root

Warning - stack not written to the dumpbuf
000000002000f530 genunix:vfs_mountroot+494 (20887c00, 200, 20887c00, 208da000, 1300000000, 208da000)
%l0-3: 0000000000000001 000000002087ec00 00000000122b72d8 0000000020129400
%l4-7: 0000000020129400 00000000208a8c00 00000000208d9c00 0000000000000600
000000002000f9f0 genunix:main+228 (208a4800, 206751e8, 208a4b08, 1000, 20674158, 70002000)
%l0-3: 0000000020674000 0000000020010000 000000001007eb50 000000001007e800
%l4-7: 000000002012d400 0000000010a34688 000000002012d688 0000000000000000

Changes

 The fix to the following bug introduced the problem:

35274583 lsc: panic: kernel heap corruption detected: mod after free

Cause

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