Stefani, FYI, here is a similar bisect result for 4dea8e4824b363c53f320d328040d7c6c5921419 ("x86, vdso: Add 32 bit VDSO time support for 32 bit kernel"). +----------------------------------------------------------+------------+------------+------------+ | | 8272416968 | 4dea8e4824 | d478a960ed | +----------------------------------------------------------+------------+------------+------------+ | boot_successes | 0 | 0 | 0 | | boot_failures | 80 | 20 | 19 | | INFO:task_blocked_for_more_than_seconds | 80 | | | | EIP_is_at_native_safe_halt | 80 | | | | EIP_is_at_default_send_IPI_mask_logical | 80 | | | | Kernel_panic-not_syncing:hung_task:blocked_tasks | 80 | | | | backtrace:pi_probe_unit | 80 | | | | backtrace:pi_init | 80 | | | | backtrace:pcd_init | 80 | | | | backtrace:kernel_init_freeable | 80 | | | | backtrace:cpu_startup_entry | 76 | | | | backtrace:watchdog | 80 | | | | BUG:unable_to_handle_kernel_paging_request | 0 | 20 | 19 | | Oops:SMP_DEBUG_PAGEALLOC | 0 | 20 | 19 | | EIP_is_at_sysenter_setup | 0 | 20 | 19 | | Kernel_panic-not_syncing:Attempted_to_kill_the_idle_task | 0 | 20 | 19 | +----------------------------------------------------------+------------+------------+------------+ [ 0.009720] Initializing cgroup subsys blkio [ 0.010256] Initializing cgroup subsys perf_event [ 0.010830] Initializing cgroup subsys net_prio [ 0.011479] BUG: unable to handle kernel paging request at 91c24000 [ 0.012000] IP: [<820444c8>] sysenter_setup+0x90/0x2b4 [ 0.012000] *pde = 123fd067 *pte = 11c24060 [ 0.012000] Oops: 0002 [#1] SMP DEBUG_PAGEALLOC [ 0.012000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.14.0-rc5-03765-gd478a96 #4 [ 0.012000] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 0.012000] task: 81f5ff20 ti: 81f58000 task.ti: 81f58000 [ 0.012000] EIP: 0060:[<820444c8>] EFLAGS: 00210206 CPU: 0 [ 0.012000] EIP is at sysenter_setup+0x90/0x2b4 [ 0.012000] EAX: 078bfbfd EBX: 91c23000 ECX: 00000044 EDX: 00001044 [ 0.012000] ESI: 82091418 EDI: 91c24000 EBP: 81f59fb4 ESP: 81f59f90 [ 0.012000] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 [ 0.012000] CR0: 8005003b CR2: 91c24000 CR3: 02228000 CR4: 00000690 [ 0.012000] Stack: [ 0.012000] 81f6d0c0 91c22b80 00000f61 00000800 80002001 078bfbfd 820850e0 00020800 [ 0.012000] 82229800 81f59fbc 82039789 81f59fcc 820397bf 820850e0 00020800 81f59fec [ 0.012000] 82033a6d 0000027e ffffffff ffffffff 82033530 820850e0 00000800 81f59ff8 [ 0.012000] Call Trace: [ 0.012000] [<82039789>] identify_boot_cpu+0x17/0x28 [ 0.012000] [<820397bf>] check_bugs+0xb/0xbb [ 0.012000] [<82033a6d>] start_kernel+0x376/0x381 [ 0.012000] [<82033530>] ? repair_env_string+0x51/0x51 [ 0.012000] [<82033364>] i386_start_kernel+0x12e/0x131 [ 0.012000] Code: f6 c4 08 74 12 ba 5c 14 09 82 be 18 04 09 82 81 ea 18 04 09 82 eb 10 ba 18 04 09 82 be e8 f3 08 82 81 ea e8 f3 08 82 89 d1 89 df a4 89 d8 e8 bf fe ff ff b9 04 00 00 00 ba c0 39 df 81 89 d8 [ 0.012000] EIP: [<820444c8>] sysenter_setup+0x90/0x2b4 SS:ESP 0068:81f59f90 [ 0.012000] CR2: 0000000091c24000 [ 0.012000] ---[ end trace 244d6fd44ed68f46 ]--- [ 0.012000] Kernel panic - not syncing: Attempted to kill the idle task! git bisect start d478a960edf1ea61ca31a07a48a8771f043dba78 0414855fdc4a40da05221fc6062cccbc0c30f169 -- git bisect bad 6c2191ad9b6225860eef70a77d300c3d5ad39182 # 07:28 0- 8 Merge 'digsig/for-mimi' into devel-hourly-2014030618 git bisect good 61ca01b5aa63605e033f1826dcceb41421aa72cd # 07:37 20+ 20 Merge 'ubifs/master' into devel-hourly-2014030618 git bisect bad 53dca0b5f0e257f00b91fc3be98fb47c07d20cfc # 07:44 0- 16 Merge 'tip/x86/vdso' into devel-hourly-2014030618 git bisect good f25ed0ebc194a51042a5392ca821de2ff6661275 # 07:51 20+ 20 Merge 'slave-dma/next' into devel-hourly-2014030618 git bisect good e0099b8165e2525541d7844e29e8838824b3601e # 07:58 20+ 20 Merge 'pcmoore-selinux/next' into devel-hourly-2014030618 git bisect good c24bf54683dd0098e878a0cf40e2667e46a39a0a # 08:11 20+ 20 Merge 'renesas/next' into devel-hourly-2014030618 git bisect good 6543ca6fee7d3b314bda69b83fd429ed3e336645 # 08:19 20+ 20 x86, vdso: Cleanup __vdso_gettimeofday() git bisect bad 4dea8e4824b363c53f320d328040d7c6c5921419 # 08:23 0- 8 x86, vdso: Add 32 bit VDSO time support for 32 bit kernel git bisect good 8272416968a9bd8244515179625cdeffd7c2c90a # 08:30 20+ 20 x86, vdso: Patch alternatives in the 32-bit VDSO # first bad commit: [4dea8e4824b363c53f320d328040d7c6c5921419] x86, vdso: Add 32 bit VDSO time support for 32 bit kernel git bisect good 8272416968a9bd8244515179625cdeffd7c2c90a # 08:37 60+ 80 x86, vdso: Patch alternatives in the 32-bit VDSO git bisect bad d478a960edf1ea61ca31a07a48a8771f043dba78 # 08:37 0- 19 0day head guard for 'devel-hourly-2014030618' git bisect good c3bebc71c4bcdafa24b506adf0c1de3c1f77e2e0 # 08:50 60+ 60 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net git bisect good 0ffb2fe7b9c30082876fa3a17da018bf0632cf03 # 08:52 60+ 69 Add linux-next specific files for 20140306 Thanks, Fengguang