Author: avg
Date: Wed Sep 13 10:34:31 2017
New Revision: 323528
URL: https://svnweb.freebsd.org/changeset/base/323528

Log:
  MFV r323527: 5815 libzpool's panic function doesn't set global panicstr, 
::status not as useful
  
  illumos/illumos-gate@fae6347731c9d3f46b26338313b0422927f29cf6
  
https://github.com/illumos/illumos-gate/commit/fae6347731c9d3f46b26338313b0422927f29cf6
  
  https://www.illumos.org/issues/5815
    When panic() is called from within ztest, the mdb ::status command isn't as
    useful as it could be since the global panicstr variable isn't updated. We
    should modify the function to make sure panicstr is set, so ::status can
    present the error message just like it does on a failed assertion.
  
  Reviewed by: Matthew Ahrens <mahr...@delphix.com>
  Reviewed by: Sebastien Roy <sebastien....@delphix.com>
  Reviewed by: Gordon Ross <gordon.r...@nexenta.com>
  Reviewed by: Rich Lowe <richl...@richlowe.net>
  Approved by: Dan McDonald <dan...@omniti.com>
  Author: Prakash Surya <prakash.su...@delphix.com>
  MFC after:    4 weeks

Modified:
  head/cddl/contrib/opensolaris/lib/libzpool/common/kernel.c
Directory Properties:
  head/cddl/contrib/opensolaris/   (props changed)

Modified: head/cddl/contrib/opensolaris/lib/libzpool/common/kernel.c
==============================================================================
--- head/cddl/contrib/opensolaris/lib/libzpool/common/kernel.c  Wed Sep 13 
10:33:09 2017        (r323527)
+++ head/cddl/contrib/opensolaris/lib/libzpool/common/kernel.c  Wed Sep 13 
10:34:31 2017        (r323528)
@@ -735,11 +735,9 @@ static char ce_suffix[CE_IGNORE][2] = { "", "\n", "\n"
 void
 vpanic(const char *fmt, va_list adx)
 {
-       (void) fprintf(stderr, "error: ");
-       (void) vfprintf(stderr, fmt, adx);
-       (void) fprintf(stderr, "\n");
-
-       abort();        /* think of it as a "user-level crash dump" */
+       char buf[512];
+       (void) vsnprintf(buf, 512, fmt, adx);
+       assfail(buf, NULL, 0);
 }
 
 void
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