* Ingo Molnar <mingo@xxxxxxx> wrote: > FYI, some sort of boot crash has snuck upstream in the last 24 hours: > > BUG: unable to handle kernel paging request at ffff87ffc147e020 > IP: [<ffffffff811aa762>] this_cpu_cmpxchg16b_emu+0x2/0x1c > > [<ffffffff810d9cbc>] ? kmem_cache_alloc+0x4c/0x110 > [<ffffffff8151cf06>] kmem_cache_init+0xeb/0x2b0 > [<ffffffff81504a06>] start_kernel+0x1de/0x49b > [<ffffffff8150432b>] x86_64_start_reservations+0x132/0x136 > [<ffffffff81504140>] ? early_idt_handlers+0x140/0x140 > > And the SLAB changes are one of the suspects. It triggers in about 5% of all > randconfigs. I'm bisecting it currently. Caused by: | 8a5ec0ba42c4919e2d8f4c3138cc8b987fdb0b79 is the first bad commit | commit 8a5ec0ba42c4919e2d8f4c3138cc8b987fdb0b79 | Author: Christoph Lameter <cl@xxxxxxxxx> | Date: Fri Feb 25 11:38:54 2011 -0600 | | Lockless (and preemptless) fastpaths for slub I'll try to revert these: 2fd66c517d5e: slub: Add missing irq restore for the OOM path a24c5a0ea902: slub: Dont define useless label in the !CONFIG_CMPXCHG_LOCAL case 8a5ec0ba42c4: Lockless (and preemptless) fastpaths for slub Thanks, Ingo -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>