每次我尝试在 Gumstix Overo 板上运行 Linaro 时都会出现以下错误。有没有人有同样的问题？我无法弄清楚问题是什么。尝试重新安装 Linaro 几次，但同样的错误再次出现。
[ 455.455841] Unable to handle kernel NULL pointer dereference at virtual address 00000694
[ 455.464385] pgd = c0004000
[ 455.467224] [00000694] *pgd=00000000
[ 455.471008] Internal error: Oops: 80000007 [#1] PREEMPT
[ 455.476501] Modules linked in: libertas_sdio libertas cfg80211 rfkill lib80211 ads7846
[ 455.484924] CPU: 0 Not tainted (3.2.1-linaro-omap #3)
[ 455.490600] PC is at 0x694
[ 455.493469] LR is at handle_level_irq+0x58/0xf8
[ 455.498260] pc : [<00000694>] lr : [<c0092974>] psr: 200f01b3
[ 455.498260] sp : c08bbeb8 ip : c08bbe90 fp : c08bbecc
[ 455.510345] r10: 00000000 r9 : 411fc083 r8 : 80004059
[ 455.515838] r7 : c08bbf44 r6 : ffffffff r5 : c08de4d8 r4 : c08de488
[ 455.522705] r3 : 00000695 r2 : dec062d0 r1 : 0000000b r0 : c08de488
[ 455.529571] Flags: nzCv IRQs off FIQs on Mode SVC_32 ISA Thumb Segment kernel
[ 455.537536] Control: 10c5387d Table: 9ddec019 DAC: 00000015
[ 455.543579] Process swapper (pid: 0, stack limit = 0xc08ba2f0)
[ 455.549713] Stack: (0xc08bbeb8 to 0xc08bc000)