On Mon, May 23, 2011 at 7:08 PM, Qiannan Cui <qcui@xxxxxxxxxx> wrote: > > > On Sun, May 22, 2011 at 12:37 PM, Qiannan Cui <qcui@xxxxxxxxxx> wrote: >> Hi, >> When I updated the kernel from 2.6.32 to 2.6.39+, the server can not boot the 2.6.39+ kernel successfully. The console ouput showed 'Kernel panic - not syncing: Attempted to kill the idle task!' I have tried to set the kernel parameter idle=poll in the grub file. But it failed to boot again due to the same error. Could anyone help me to solve the problem? The full console output is attached. Thanks. >> >> Best Regards, >> Cui >> > >> The backtrace shows alloc_pages_exact_nid but I am not sure it is a > culprit as I followed the patch at that time. Cced Andi. > >> Could you show your config? >> Could you test with reverting [ee85c2, Âmm: add alloc_pages_exact_nid()]? > Maybe it can help Andy. > >> Thanks. >> > > > Tested without the patch mm: add alloc_pages_exact_nid(), but kernel panic were still there. Do you know what version kernel works well between 2.6.32 and 2.6.39 in your machine? As I look further, some culprit are 21a3c96468[memcg: allocate memory cgroup structures in local nodes], 6cfddb26155[page_cgroup: reduce allocation overhead for page_cgroup array for CONFIG_SPARSEMEM] if the problem happen recently. If kernel panic still happen, could you do git-bisect? -- Kind regards, Minchan Kim -- 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