l2arc_feed_thread page fault on r287138

Bryan Drewery bdrewery at FreeBSD.org
Tue Aug 25 20:18:46 UTC 2015


> Fatal trap 12: page fault while in kernel mode
> cpuid = 2; apic id = 02
> fault virtual address   = 0xc4
> fault code              = supervisor read data, page not present
> instruction pointer     = 0x20:0xffffffff80ce6c63
> stack pointer           = 0x28:0xfffffe3553e689d0
> frame pointer           = 0x28:0xfffffe3553e68a00
> 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         = 6 (l2arc_feed_thread)
> [ thread pid 6 tid 100172 ]
> Stopped at      uma_dbg_free+0x53:      movl    0xc4(%rdi),%esi
> db> bt
> Tracing pid 6 tid 100172 td 0xfffff8012551c9a0
> uma_dbg_free() at uma_dbg_free+0x53/frame 0xfffffe3553e68a00
> uma_zfree_arg() at uma_zfree_arg+0xaf/frame 0xfffffe3553e68a60
> l2arc_feed_thread() at l2arc_feed_thread+0xe0b/frame 0xfffffe3553e68bb0
> fork_exit() at fork_exit+0x84/frame 0xfffffe3553e68bf0
> fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe3553e68bf0
> --- trap 0, rip = 0, rsp = 0, rbp = 0 ---
> db>

-- 
Regards,
Bryan Drewery

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