[Bug 253687] [hwpmc] kernel panic when listing available hardware performance counters

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=253687

--- Comment #3 from Zhenlei Huang <zlei.huang at gmail.com> ---
Some additional debug info:

(kgdb) print md->pmd_npmc
$1 = 33
(kgdb) print p - pmcinfo
$2 = 24
(kgdb) print pmc_rowindex_to_classdep[23]
$3 = (struct pmc_classdep *) 0xfffff8000440a5a0
(kgdb) print pmc_rowindex_to_classdep[24]
$4 = (struct pmc_classdep *) 0x0
(kgdb) print pmc_rowindex_to_classdep[25]
$5 = (struct pmc_classdep *) 0x0
(kgdb) print pmc_rowindex_to_classdep[26]
$6 = (struct pmc_classdep *) 0x0
(kgdb) print pmc_rowindex_to_classdep[27]
$7 = (struct pmc_classdep *) 0x0
(kgdb) print pmc_rowindex_to_classdep[28]
$8 = (struct pmc_classdep *) 0x0
(kgdb) print pmc_rowindex_to_classdep[29]
$9 = (struct pmc_classdep *) 0x0
(kgdb) print pmc_rowindex_to_classdep[30]
$10 = (struct pmc_classdep *) 0x0
(kgdb) print pmc_rowindex_to_classdep[31]
$11 = (struct pmc_classdep *) 0x0
(kgdb) print pmc_rowindex_to_classdep[32]
$12 = (struct pmc_classdep *) 0x0
(kgdb)

Hope it helps.

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