利用addr2line来定位问题

[<c01b063c>] (msmfb_suspend+0x1c/0x2c) from [<c0083dc8>] (early_suspend+0xf8/0x1a4)

[<c0083dc8>] (early_suspend+0xf8/0x1a4) from [<c00640f0>] (worker_thread+0x14c/0x240)

[<c00640f0>] (worker_thread+0x14c/0x240) from [<c0068260>] (kthread+0x88/0x90)

[<c0068260>] (kthread+0x88/0x90) from [<c00299d8>] (kernel_thread_exit+0x0/0x8)

[   88.635314] pc : [<c01b063c>]    lr : [<c01b0640>]    psr: a0000013

用addr2line定位具体的代码行，可以分定位具体的库和vmlinux，下面分别举个示例：

#cd ~/project/boot/out/target/product/nice/obj/SHARED_LIBRARIES$

# addr2line 000282b8 -e

camera.msm7627a_intermediates/LINKED/camera.msm7627a.so

# addr2line -f -e vmlinux c01b063c msmfb_suspend

/home/gnutoo/embedded/htcdream/SHR/kernel/linux/drivers/video/msm/msm_fb.c:485