Linus's current tree doesn't boot on an 8-node/1TB NUMA system that I have. Its reboots are *LONG*, so I haven't fully bisected it, but it's down to a just a few commits, most of which are changes to the memblock code. Since the panic is in the memblock code, it looks like a no-brainer. It's almost certainly the code from Santosh or Grygorii that's triggering this. Config and good/bad dmesg with memblock=debug are here: http://sr71.net/~dave/intel/3.13/ Please let me know if you need it bisected further than this. The remaining commits are these: > commit 4883e997b26ed857da8dae6a6e6aeb12830b978d > commit 560dca27a6b36015e4f69a4ceba0ee5be0707c17 > commit 9a28f9dc8d10b619af9a37b1e27c41ada5415629 > commit b6cb5bab263791d09abe88f24df6c2da53415320 > commit cfb665864e54ee7a160750b4815bfe6b7eb13d0d > commit 9233d2be108f573caa21eb450411bf8fa68cadbb > commit 4fc0bc58cb7d983e55baa8dcbb7c1a4ee54e65be > commit 9e43aa2b8d1cb3137bd7e60d5fead83d0569de2b > commit 999c17e3de4855af4e829c0871ad32fc76a93991 > commit 0d036e9e33df8befa9348683ba68258fee7f0a00 > commit 8b89a1169437541a2a9b62c8f7b1a5c0ceb0fbde > commit bb016b84164554725899aef544331085e08cb402 > commit c15295001aa940df4e3cf6574808a4addca9f2e5 > commit 457ff1de2d247d9b8917c4664c2325321a35e313 > commit c2f69cdafebb3a46e43b5ac57ca12b539a2c790f > commit 6782832eba5e8c87a749a41da8deda1c3ef67ba0 > commit 9da791dfabc60218c81904c7906b45789466e68e > commit 098b081b50d5eb8c7e0200a4770b0bcd28eab9ce > commit 26f09e9b3a0696f6fe20b021901300fba26fb579 > commit b115423357e0cda6d8f45d0c81df537d7b004020 > commit 87029ee9390b2297dae699d5fb135b77992116e5 > commit 79f40fab0b3a78e0e41fac79a65a9870f4b05652 > commit 869a84e1ca163b737236dae997db4a6a1e230b9b > commit 10e89523bf5aade79081f501452fe7f1a16fa189 > commit fd615c4e671979e3e362df537d6be38f8d27aa80 > commit 5b6e529521d35e1bcaa0fe43456d1bbb335cae5d The oops I see is this: > [ 0.000000] Kernel panic - not syncing: : Failed to allocate 2143289344 bytes align=0x200000 nid=0 from=0x1000000 max_addr=0x0 > [ 0.000000] > [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.13.0-slub-03995-g0dc3fd0-dirty #816 > [ 0.000000] Hardware name: FUJITSU-SV PRIMEQUEST 1800E2/SB, BIOS PRIMEQUEST 1000 Series BIOS Version 1.24 09/14/2011 > [ 0.000000] 0000000001000000 ffffffff81c01ce8 ffffffff81706941 0000000000000687 > [ 0.000000] ffffffff81a30b48 ffffffff81c01d68 ffffffff817029de 0000000000000000 > [ 0.000000] 0000000000000030 ffffffff81c01d80 ffffffff81c01d18 ffffffff81c01d68 > [ 0.000000] Call Trace: > [ 0.000000] [<ffffffff81706941>] dump_stack+0x4e/0x68 > [ 0.000000] [<ffffffff817029de>] panic+0xbb/0x1cb > [ 0.000000] [<ffffffff81d3bef9>] memblock_virt_alloc_try_nid+0xa1/0xa1 > [ 0.000000] [<ffffffff816ff5f9>] __earlyonly_bootmem_alloc.constprop.0+0x21/0x28 > [ 0.000000] [<ffffffff81d3cf27>] sparse_mem_maps_populate_node+0x34/0x132 > [ 0.000000] [<ffffffff81d3cbd3>] ? alloc_usemap_and_memmap+0x10f/0x10f > [ 0.000000] [<ffffffff81d3cbdc>] sparse_early_mem_maps_alloc_node+0x9/0xb > [ 0.000000] [<ffffffff81d3cb96>] alloc_usemap_and_memmap+0xd2/0x10f > [ 0.000000] [<ffffffff81d3ce29>] sparse_init+0x85/0x14f > [ 0.000000] [<ffffffff81d2adbb>] paging_init+0x13/0x22 > [ 0.000000] [<ffffffff81d1b521>] setup_arch+0xb51/0xc6e > [ 0.000000] [<ffffffff81703150>] ? printk+0x4d/0x4f > [ 0.000000] [<ffffffff81d14b1a>] start_kernel+0x85/0x3db > [ 0.000000] [<ffffffff81d145a8>] x86_64_start_reservations+0x2a/0x2c > [ 0.000000] [<ffffffff81d1469a>] x86_64_start_kernel+0xf0/0xf7 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>