[Bug 227603] [panic] r323477: Sleeping thread owns a non-sleepable lock

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Wed Apr 18 07:45:33 UTC 2018


            Bug ID: 227603
           Summary: [panic] r323477: Sleeping thread owns a non-sleepable
           Product: Base System
           Version: 11.1-STABLE
          Hardware: Any
                OS: Any
            Status: New
          Keywords: crash
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: mjoras at freebsd.org
          Reporter: eugen at freebsd.org
                CC: net at FreeBSD.org, stable at FreeBSD.org

Created attachment 192611
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=192611&action=edit
kgdb backtrace

The change https://svnweb.freebsd.org/base?view=revision&revision=r323477 makes
it possible for kernel thread to sleep on sx lock in vlan_ioctl() function
while holding mutex bpf_mtx that is prohibited and leads to panic.

kgdb session is attached.

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