x86 Systems Running Solaris 11 May Panic in hat_unlock with lock_cnt < 1 (Doc ID 1998054.1)

Last updated on JULY 29, 2016

Applies to:

Solaris Operating System - Version 11.1 to 11.2 [Release 11.0]
Oracle Solaris on x86-64 (64-bit)

Symptoms

x86 Systems running Solaris 11 may panic with a panic messages similar to the following:


panic[cpu2]/thread=ffffc1c08e58ac00: hat_unlock(): lock_cnt < 1, htable=ffffc1004c2bb618, vaddr=c0200000


fffffffc80442860 unix:hat_unlock+e0 ()
fffffffc804428e0 unix:hat_shared_process_outer+122 ()
fffffffc80442910 unix:hat_share_range_unlock+31 ()
fffffffc804429b0 genunix:segspt_softunlock+a5 ()
fffffffc80442a80 genunix:segspt_shmfault+428 ()
fffffffc80442ba0 genunix:urw+421 ()
fffffffc80442bd0 genunix:uread+2e ()
fffffffc80442c90 procfs:prusrio+ac ()
fffffffc80442ce0 procfs:pr_read_as+ba ()
fffffffc80442d30 procfs:prread+72 ()
fffffffc80442da0 genunix:fop_read+aa ()
fffffffc80442f00 genunix:pread+229 ()
fffffffc80442f10 unix:brand_sys_syscall+212 ()

syncing file systems... done
dumping to /dev/zvol/dsk/rpool/dump, offset 65536, content: kernel


Cause

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