FYI, please remove my redhat email from your address book. I don't read my RH email when I travel (which I've been doing a lot lately).
On Fri, 04 Oct 2013 10:44:00 -0400 Mel Gorman <mgor...@suse.de> wrote: > With CONFIG_NUMA_BALANCING=y and booting with numa_balancing=enable > there is a crash very early in the lifetime of the system. By setting > earlyprintk=ttyS0,115200 the error is visible and looks something like > this > > [ 0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-3.11.0-vanilla+ > root=/dev/sda5 reboot=pci console=tty0 console=ttyS0,115200 > numa_balancing=enable earlyprintk=ttyS0,115200 > [ 0.000000] Unexpected op at task_numa_fault+0x1d/0xa0 [ffffffff81085ded] > (0f 1f 44 00 00) arch/x86/kernel/jump_label.c:53 > PANIC: early exception 06 rip 10:ffffffff815b2663 error 0 cr2 ffff88107ffff000 What's at ffffffff815b2663? > [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.11.0-vanilla+ #23 > [ 0.000000] Hardware name: Dell Inc. PowerEdge R810/0TT6JF, BIOS 2.7.4 > 04/26/2012 > [ 0.000000] ffffffff81009220 ffffffff81a01e10 ffffffff815b7e7b > 00000000000003f8 > [ 0.000000] ffffffff81085ded ffffffff81a01ec8 ffffffff81ad4197 > 6a2f6c656e72656b > [ 0.000000] 2f3638782f686372 000000000000012b 6562616c5f706d75 > ffffffff81c68444 > [ 0.000000] Call Trace: > [ 0.000000] [<ffffffff81009220>] ? alternatives_text_reserved+0x80/0x80 > [ 0.000000] [<ffffffff815b7e7b>] dump_stack+0x55/0x86 > [ 0.000000] [<ffffffff81085ded>] ? task_numa_fault+0x1d/0xa0 > [ 0.000000] [<ffffffff81ad4197>] early_idt_handler+0x77/0xa4 > [ 0.000000] [<ffffffff815b2663>] ? bug_at+0x45/0x47 > [ 0.000000] [<ffffffff815b2663>] ? bug_at+0x45/0x47 > [ 0.000000] [<ffffffff81006db6>] __jump_label_transform.isra.0+0x136/0x150 > [ 0.000000] [<ffffffff81006ea7>] > arch_jump_label_transform_static+0x77/0xc0 > [ 0.000000] [<ffffffff81af8596>] jump_label_init+0x81/0xaf > [ 0.000000] [<ffffffff81ad4c02>] start_kernel+0x161/0x3ce > [ 0.000000] [<ffffffff81ad48a0>] ? repair_env_string+0x5e/0x5e > [ 0.000000] [<ffffffff81ad45a5>] x86_64_start_reservations+0x2a/0x2c > [ 0.000000] [<ffffffff81ad469f>] x86_64_start_kernel+0xf8/0xfc > [ 0.000000] RIP 0x46 > > Bisection identified this as the problem commit. > > 9c85f3bdf400665eecf62658a9106501f6a77a13 is the first bad commit > commit 9c85f3bdf400665eecf62658a9106501f6a77a13 > Author: Steven Rostedt <srost...@redhat.com> > Date: Thu Jan 26 18:38:07 2012 -0500 > > x86/jump-label: Add safety checks to jump label conversions > > I did no further investigation yet in case this is already a known > problem. > We had a similar bug with Xen like this. It ended up being that jump labels are used before they are initialized, and that is a real bug too, as the jump labels do not get converted until initialization, and why would something convert it before then? -- Steve -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
