Date: Tue, 25 Aug 2015 23:20:29 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: Bryan Drewery <bdrewery@FreeBSD.org>, "freebsd-fs@freebsd.org" <freebsd-fs@FreeBSD.org> Cc: Alexander Motin <mav@FreeBSD.org> Subject: Re: l2arc_feed_thread page fault on r287138 Message-ID: <55DCCE0D.8050902@FreeBSD.org> In-Reply-To: <55DCCDA3.8030605@FreeBSD.org> References: <55DCCDA3.8030605@FreeBSD.org>
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On 25/08/2015 23:18, Bryan Drewery wrote: >> 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> > A little bit more debug info like line numbers, argument values, etc would be nice. -- Andriy Gapon
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