Greetings, I got the below oops in linux-next and the first bad commit is commit 455e987c0c2eb2c9045dc854559474cf41509965 Merge: 7c17e48 fd6da69 Author: Linus Torvalds Date: Sat Dec 1 13:07:48 2012 -0800 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Ingo Molnar: "This is mostly about unbreaking architectures that took the UAPI changes in the v3.7 cycle, plus misc fixes." * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf kvm: Fix building perf kvm on non x86 arches perf kvm: Rename perf_kvm to perf_kvm_stat perf: Make perf build for x86 with UAPI disintegration applied perf powerpc: Use uapi/unistd.h to fix build error tools: Pass the target in descend tools: Honour the O= flag when tool build called from a higher Makefile tools: Define a Makefile function to do subdir processing x86: Export asm/{svm.h,vmx.h,perf_regs.h} perf tools: Fix strbuf_addf() when the buffer needs to grow perf header: Fix numa topology printing perf, powerpc: Fix hw breakpoints returning -ENOSPC [ 108.102297] NET4: DECnet for Linux: V.2.5.68s (C) 1995-2003 Linux DECnet Project Team [ 108.105501] ------------[ cut here ]------------ [ 108.106286] WARNING: at /c/kernel-tests/src/i386/net/core/neighbour.c:1545 neigh_table_init+0x16f/0x490() [ 108.107506] Hardware name: Bochs [ 108.108577] Pid: 1, comm: swapper Not tainted 3.8.0-rc5-01118-geee5035 #17 [ 108.109506] Call Trace: [ 108.111179] [] warn_slowpath_common+0xf2/0x140 [ 108.112064] [] ? neigh_table_init+0x16f/0x490 [ 108.112880] [] ? neigh_table_init+0x16f/0x490 [ 108.114164] [] ? atm_clip_init+0x98/0x98 [ 108.115409] [] warn_slowpath_null+0x39/0x50 [ 108.116776] [] neigh_table_init+0x16f/0x490 [ 108.118169] [] ? mutex_unlock+0x16/0x30 [ 108.119260] [] ? proto_register+0x65/0x350 [ 108.120016] [] ? atm_clip_init+0x98/0x98 [ 108.121591] [] dn_neigh_init+0x1b/0x2b [ 108.122305] [] decnet_init+0x67/0xfc [ 108.123169] [] do_one_initcall+0xf2/0x259 [ 108.124259] [] kernel_init_freeable+0x223/0x393 [ 108.125053] [] ? loglevel+0x55/0x55 [ 108.125712] [] kernel_init+0x19/0x200 [ 108.126411] [] ret_from_kernel_thread+0x1b/0x30 [ 108.127194] [] ? rest_init+0x1f0/0x1f0 [ 108.128351] ---[ end trace 1bcbb5f262552fec ]--- git bisect start v3.7 v3.6 -- git bisect good d66e6737d454553e1e62109d8298ede5351178a4 # 10 2013-02-09 11:28:24 Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 git bisect good e1b28147f684af67bfac989756c27c19859d3d4e # 10 2013-02-09 11:58:58 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux git bisect good 37820108f395032e850e400139d956561a043c26 # 10 2013-02-09 12:28:59 Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc git bisect good 60541d778e536455970281de25b2476e01c03aef # 10 2013-02-09 12:59:29 unicore32: switch to generic sys_execve() git bisect good 403f43c937d24832b18524f65415c0bbba6b5064 # 10 2013-02-09 13:29:53 team: bcast: convert return value of team_dev_queue_xmit() to bool correctly git bisect good e23739b4ade80a3a7f87198f008f6c44a7cbc9fd # 10 2013-02-09 14:00:15 Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media git bisect bad 455e987c0c2eb2c9045dc854559474cf41509965 # 0 2013-02-09 14:03:12 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip git bisect good 50a53bbe1280839755cb120eef729ad150f644f9 # 10 2013-02-09 14:31:02 Merge branch 'akpm' (Fixes from Andrew) git bisect good 31e06a42a34395111842707a85774151245447b7 # 10 2013-02-09 15:01:25 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal git bisect good 97a13bf3fed11a7508d58b67515c4b83cce25540 # 10 2013-02-09 15:31:48 Merge tag 'perf-uapi-20121119' of git://git.infradead.org/users/dhowells/linux-headers into perf/urgent git bisect good 8fdd78eeb11aeda018b22424f863344ef83a92d3 # 10 2013-02-09 16:02:24 Merge tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming git bisect good 7c17e486e865d616f0e37c7f7f0e4dcfab704cd8 # 10 2013-02-09 16:32:42 Merge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip git bisect good 7321090f6751c9987c26a8c81c63680d16a614d7 # 10 2013-02-09 17:03:13 perf kvm: Fix building perf kvm on non x86 arches git bisect good fd6da696f38b00ffeae1185d6f0ec5d4ab3b472d # 10 2013-02-09 17:33:37 Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent git bisect good 7c17e486e865d616f0e37c7f7f0e4dcfab704cd8 # 30 2013-02-09 18:34:45 Merge branch 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip git bisect good fd6da696f38b00ffeae1185d6f0ec5d4ab3b472d # 30 2013-02-09 19:35:42 Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent git bisect bad e347c988b34344c5192c2c238ad1c4bae51e975b # 0 2013-02-09 19:51:48 Add linux-next specific files for 20130208 Thanks, Fengguang