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Solaris 11 or Solaris 10 can panic with Deadlock: cycle in blocking chain (Doc ID 2391166.1)

Last updated on APRIL 25, 2018

Applies to:

Solaris Operating System - Version 10 3/05 to 11.1 [Release 10.0 to 11.0]
Oracle Solaris on SPARC (64-bit)
Oracle Solaris on x86-64 (64-bit)

Symptoms

panic string: Deadlock: cycle in blocking chain

 

The two threads involved in the deadlock will have stack traces similar to these:

genunix:turnstile_block
unix:mutex_vector_enter
ibp:ibd_rcq_handler
ibtl:ibc_cq_handler
mcxnex:mcxnex_cq_handler
mcxnex:mcxnex_eq_poll
mcxnex:mcxnex_check_eq
mcxnex:mcxnex_isr_watchdog
genunix:timeout_execute
genunix:timer_softintr
unix:intr_thread

 

---

genunix:turnstile_block
unix:mutex_vector_enter
ibtl:ibt_set_cq_handler
ibp:ibd_undo_start
ibp:ibd_m_stop
mac:mac_stop
dls:dls_close
dld:dld_str_detach
dld:dld_str_close

Cause

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