Hi All, I am using linux-3.10.20 kernel and facing the below reported panic some times. As this is coming from general linux stack. Could you please guide how to debug these kind of panics. Call Trace: [<ffffffff801e64e8>] get_pageblock_flags_group+0xa8/0xd0 [<ffffffff801fd8a4>] suitable_migration_target+0x1c/0x68 [<ffffffff801fdf30>] compaction_alloc+0x1c0/0x258 [<ffffffff80227280>] migrate_pages+0xd0/0x570 [<ffffffff801fec00>] compact_zone+0x2c0/0x3c8 [<ffffffff801fef48>] compact_zone_order+0xa8/0xe0 [<ffffffff801ff0c8>] try_to_compact_pages+0x148/0x1b8 [<ffffffff807bec44>] __alloc_pages_direct_compact+0xd8/0x26c [<ffffffff801e8bec>] __alloc_pages_nodemask+0x3ec/0x788 [<ffffffff80171ca0>] copy_process.part.56+0x118/0x1180 [<ffffffff80172e34>] do_fork+0x9c/0x250 [<ffffffff8015cca4>] handle_sysn32+0x44/0x70 Thanks, Narasimha