Date: Mon, 26 May 2003 12:11:35 -0400 (EDT) From: Bryan Liesner <bleez@verizon.net> To: freebsd-current@freebsd.org Subject: panic since changes to kern_umtx.c Message-ID: <20030526120106.S488@gravy.homeunix.net>
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The change from kern_umtx.c rev 1.2 to 1.3 brought out the following
panic on my system. The panic does not occur if I revert back to 1.2
or if I turn off my USB hard drive (uses EHCI) and run with rev 1.3
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0x0
fault code = supervisor read, page not present
instruction pointer = 0x8:0xc0135b0a7
stack pointer = 0x10:0xd68f2c48
frame pointer = 0x10:0xd68f2c64
code segment = base 0x0 limit 0xffff, type 0x1b
processor eflags = interrupt enabled, resume, IOPL=0
current process = 12 (swi7: tty:sio clock)
trap number = 12
panic page fault
DDB says it was in heap_up+0x27
...
(kgdb) l *heap_up+0x27
0xc0136be7 is in heap_up (../../../cam/cam_queue.c:345).
340 * equal too, or greater than j respectively.
341 */
342 static __inline int
343 queue_cmp(cam_pinfo **queue_array, int i, int j)
344 {
345 if (queue_array[i]->priority == queue_array[j]->priority)
346 return ( queue_array[i]->generation
347 - queue_array[j]->generation );
348 else
349 return ( queue_array[i]->priority
(kgdb)
350 - queue_array[j]->priority );
351 }
352
353 /*
354 * swap: Given an array of cam_pinfo* elements and indexes i and j,
355 * exchange elements i and j.
356 */
357 static __inline void
358 swap(cam_pinfo **queue_array, int i, int j)
359 {
--
=============================================================
= Bryan D. Liesner LeezSoft Communications, Inc. =
= A subsidiary of LeezSoft Inc. =
= bleez@verizon.net Home of the Gipper =
=============================================================
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