dev/isp panic (was Re: CAM Target Layer and dev/isp)

[Matthew Jacob]

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db> bt
Tracing pid 12 tid 100062 td 0xfffffe001c00f470
acpi_timer_get_timecount() at 0xffffffff803ccfc6 =
acpi_timer_get_timecount+0x16
DELAY() at 0xffffffff80ce68c3 = DELAY+0x83
ns8250_putc() at 0xffffffff807a17ba = ns8250_putc+0x9a
uart_cnputc() at 0xffffffff807a3b85 = uart_cnputc+0x75
cnputc() at 0xffffffff808e9cbc = cnputc+0x4c
cnputs() at 0xffffffff808ea0f5 = cnputs+0x35
putbuf() at 0xffffffff8097400c = putbuf+0xac
kvprintf() at 0xffffffff80972643 = kvprintf+0x83
vprintf() at 0xffffffff80973b15 = vprintf+0x85
printf() at 0xffffffff80973be7 = printf+0x67
isp_prt() at 0xffffffff805c15a0 = isp_prt+0xd0
isp_async() at 0xffffffff805c6736 = isp_async+0x356
isp_intr() at 0xffffffff805b854c = isp_intr+0x13ac
isp_platform_intr() at 0xffffffff805c1fd9 = isp_platform_intr+0x99
intr_event_execute_handlers() at 0xffffffff80907214 =
intr_event_execute_handlers+0x104
ithread_loop() at 0xffffffff809089a6 = ithread_loop+0xa6
fork_exit() at 0xffffffff809038ef = fork_exit+0x11f
fork_trampoline() at 0xffffffff80c5139e = fork_trampoline+0xe
--- trap 0, rip = 0, rsp = 0xffffff9178bd3cf0, rbp = 0 ---
db> x/s panicstr
0xffffffff8130fd08 = panicstr:


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Hmm. No panic string because it wasn't a panic. isp driver is trying to 
(successfully) print something and this blew up in the ACPI code. If 
there was a bad string it would have blown up in kvprintf.  At least 
that's my read of this.