On Wed, 12 Jun 2013 22:39:53 +0200 Dimitry Andric <dim_at_freebsd.org> wrote: > On Jun 12, 2013, at 22:30, Alexander Leidinger > <Alexander_at_Leidinger.net> wrote: > > I try to update from a pre-clang world (r242511M) to > > "now" (r251618M). The resulting kernel boots, but while starting > > some jails (with ezjail from ports, so fairly late in the boot > > process) I get a kernel panic (IIRC zfs trying to access page 0). > > If you are running on i386, it might be a stack overflow? Try > increasing the stack a little, it might help in that case. > > In any case, please try to get a backtrace. The bt in the minidump is useless, but I made a bt directly in the kernel debugger: ---snip--- Fatal trap 12: page fault while in kernel mode cpuid = 2; apic id = 02 fault virtual address = 0x0 fault code = supervisor read instruction, page not present instruction pointer = 0x20:0x0 stack pointer = 0x28:0xffffff839e79d930 frame pointer = 0x28:0xffffff839e79d9e0 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 = 2183 (zfs) db> bt Tracing pid 2356 uart_sab82532_class() at 0 devfs_ioctl_f() at devfs_ioctl_f+0xf0 kern_ioctl() at kern_ioctl+0x1d7 sys_ioctl() at sys_ioctl+0x142 ---snip--- Anyone with a pointer to an explanation how to convert those pointers into source locations? The minidump is available at http://www.leidinger.net/test/core.txt.1.bz2 unfortunately the bt in there is crap. Bye, Alexander. -- http://www.Leidinger.net Alexander _at_ Leidinger.net: PGP ID = B0063FE7 http://www.FreeBSD.org netchild _at_ FreeBSD.org : PGP ID = 72077137Received on Fri Jun 14 2013 - 19:07:28 UTC
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