2.6.24rc6 has fared no better on my machine: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process modprobe (pid: 2064, threadinfo ffff8102585c000, task ffff81012779c040) Stack: ffff810127678a40 ffff81012be8930 0000000000000282 ffff81000000ee00 ffffffff8026c617 0000000000000000 0000000000000000 ffff81012585ddc8 ffff81012585ddb8 ffff810001029660 ffffffff8026c66c ffff81012be8d930 Call trace: [<ffffffff8026c617>] free_hot_cold_page+0x109/0x13d [<ffffffff8026c66c>] __pagevec_free+0x21/0x2e [<ffffffff8026fbfb>] release_pages+0x171/0x183 [<ffffffff80275ab7>] unmap_vmas+0x41f/0x744 [<ffffffff8027f115>] free_pages_and_swap_cache+0x73/0x8f [<ffffffff802792b0>] unmap_region+0x110/0x126 [<ffffffff80279fa7>] do_munmap+0x1f9/0x276 [<ffffffff80408228>] __down_write_nested+0x12/0x9a [<ffffffff8027a064>] sys_munmap+0x40/0x5a [<ffffffff8020be2e>] system_call+0x7e/0x83 Code: 41 0f a3 0c 24 19 c0 48 89 f2 48 09 fa 85 c0 48 0f 45 f2 ff RIP [<ffffffff8026b86f>] get_pageblock_flags_group+0x56/0x7f RSP <ffff81012585dd40> ---[ end trace a186fe4770978f0c ]--- Kernel panic - not syncing: Aiee, killing interrupt handler! This was with irqpoll removed from the command line.
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