stable/11: Kernel page fault with the following non-sleepable locks held: CAM device lock
Eugene Grosbein
eugen at grosbein.net
Sun Jul 23 13:20:21 UTC 2017
On 23.07.2017 20:02, Eugene Grosbein wrote:
> Fatal trap 12: page fault while in kernel mode
> cpuid = 0; apic id = 00
> fault virtual address = 0xa
> fault code = supervisor read data, page not present
> instruction pointer = 0x20:0xffffffff80e494e1
> stack pointer = 0x28:0xfffffe04675ff670
> frame pointer = 0x28:0xfffffe04675ff670
> code segment = base 0x0, limit 0xfffff, type 0x1b
> = DPL 0, pres 1, long 1, def32 0, gran 1
> processor eflags = interrupt enabled, resume, IOPL = 0
> current process = 1387 (smartd)
> trap number = 12
> panic: page fault
> cpuid = 0
I also have a screenshot of another case of same panic that notes
lock order reversal: (Giant after non-sleepable):
http://www.grosbein.net/freebsd/crash.png
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