Date: Fri, 30 Aug 2013 00:32:53 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: Patrick <gibblertron@gmail.com> Cc: freebsd-hackers@FreeBSD.org Subject: Re: Fatal trap 12 going from 8.2 to 8.4 with ZFS Message-ID: <521FBE05.6020007@FreeBSD.org> In-Reply-To: <CA%2BdWbmYhXubU23XY4vCvfYA4MNrEOCSGCDTm2s7wF_NB1pktOA@mail.gmail.com> References: <CA%2BdWbmYhXubU23XY4vCvfYA4MNrEOCSGCDTm2s7wF_NB1pktOA@mail.gmail.com>
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on 29/08/2013 19:37 Patrick said the following: > I've got a system running on a VPS that I'm trying to upgrade from 8.2 > to 8.4. It has a ZFS root. After booting the new kernel, I get: > > Fatal trap 12: page fault while in kernel mode > cpuid = 0; apic id = 00 > fault virtual address = 0x40 > fault code = supervisor read data, page not present > instruction pointer = 0x20:0xffffffff810d7691 > stack pointer = 0x28:0xffffff800001ba60 > frame pointer = 0x28:0xffffff800001ba90 > 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 = 1 (kernel) > trap number = 12 > panic: page fault > cpuid = 0 > KDB: stack backtrace: > #0 0xffffffff8066cb96 at kdb_backtrace+0x66 > #1 0xffffffff8063925e at panic+0x1ce > #2 0xffffffff809c21d0 at trap_fatal+0x290 > #3 0xffffffff809c255e at trap_pfault+0x23e > #4 0xffffffff809c2a2e at trap+0x3ce > #5 0xffffffff809a9624 at calltrap+0x8 > #6 0xffffffff810df517 at vdev_mirror_child_select+0x67 If possible, please run 'kgdb /path/to/8.4/kernel' and then in kgdb do 'list *vdev_mirror_child_select+0x67' > #7 0xffffffff810dfacc at vdev_mirror_io_start+0x24c > #8 0xffffffff810f7c52 at zio_vdev_io_start+0x232 > #9 0xffffffff810f76f3 at zio_execute+0xc3 > #10 0xffffffff810f77ad at zio_wait+0x2d > #11 0xffffffff8108991e at arc_read+0x6ce > #12 0xffffffff8109d9d4 at dmu_objset_open_impl+0xd4 > #13 0xffffffff810b4014 at dsl_pool_init+0x34 > #14 0xffffffff810c7eea at spa_load+0x6aa > #15 0xffffffff810c90b2 at spa_load_best+0x52 > #16 0xffffffff810cb0ca at spa_open_common+0x14a > #17 0xffffffff810a892d at dsl_dir_open_spa+0x2cd > Uptime: 3s > Cannot dump. Device not defined or unavailable. > > I've booted back into the 8.2 kernel without any problems, but I'm > wondering if anyone can suggest what I should try to get this working? > I used freebsd-update to upgrade, and this was after the first > "freebsd-update install" where it installs the kernel. -- Andriy Gapon
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