git checkout 45c4ea0c4c1b8abffb575b865243fd1c69bbecd9 HEAD is now at 45c4ea0... Merge remote-tracking branch 'lzo-update/lzo-update' ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:45c4ea0c4c1b8abffb575b865243fd1c69bbecd9:bisect-usb TEST FAILURE BUG: kernel early hang without any printk output Command line: hung_task_panic=1 rcutree.rcu_cpu_stall_timeout=100 log_buf_len=8M ignore_loglevel debug sched_debug apic=debug dynamic_printk sysrq_always_enabled panic=10 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw link=/kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master/.vmlinuz-45c4ea0c4c1b8abffb575b865243fd1c69bbecd9-20131001023711-6-ant branch=next/master BOOT_IMAGE=/kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/vmlinuz-3.12.0-rc2-02842-g45c4ea0 noapic nolapic nohz=off Early hang kernel: vmlinuz-3.12.0-rc2-02842-g45c4ea0 3.12.0-rc2-02842-g45c4ea0 #2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-quantal-bay-1:20131001102547:3.12.0-rc2-02842-g45c4ea0:2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-quantal-jaketown-11:20131001090158:3.12.0-rc2-02842-g45c4ea0:2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-quantal-jaketown-19:20131001024056:3.12.0-rc2-02842-g45c4ea0:2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-quantal-lkp-tt02-22:20130930200845:3.12.0-rc2-02842-g45c4ea0:2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-quantal-nhm4-2:20131001051505:3.12.0-rc2-02842-g45c4ea0:2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-quantal-nhm4-2:20131001051536:3.12.0-rc2-02842-g45c4ea0:2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-quantal-waimea-10:20131001104350:3.12.0-rc2-02842-g45c4ea0:2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-quantal-waimea-14:20131001133854:3.12.0-rc2-02842-g45c4ea0:2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-quantal-xian-39:20131001090946:3.12.0-rc2-02842-g45c4ea0:2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-quantal-xps-4:20131001054001:3.12.0-rc2-02842-g45c4ea0:2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-quantal-xps-4:20131001054016:3.12.0-rc2-02842-g45c4ea0:2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-quantal-xps-7:20131001054017:3.12.0-rc2-02842-g45c4ea0:2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-yocto-ant-14:20131001090313:3.12.0-rc2-02842-g45c4ea0:2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-yocto-bay-4:20131001090409:3.12.0-rc2-02842-g45c4ea0:2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-yocto-lkp-tt02-3:20130930171217:3.12.0-rc2-02842-g45c4ea0:2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-yocto-nhm4-4:20130930214015:3.12.0-rc2-02842-g45c4ea0:2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-yocto-waimea-5:20131001211217:3.12.0-rc2-02842-g45c4ea0:2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-yocto-waimea-8:20131002045548:3.12.0-rc2-02842-g45c4ea0:2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-yocto-xian-28:20131001090939:3.12.0-rc2-02842-g45c4ea0:2 /kernel/i386-randconfig-j4-09302234/45c4ea0c4c1b8abffb575b865243fd1c69bbecd9/dmesg-yocto-xps-5:20131001053938:3.12.0-rc2-02842-g45c4ea0:2 bisect: bad commit 45c4ea0c4c1b8abffb575b865243fd1c69bbecd9 git checkout v3.11 Previous HEAD position was 45c4ea0... Merge remote-tracking branch 'lzo-update/lzo-update' HEAD is now at 6e46645... Linux 3.11 ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:6e4664525b1db28f8c4e1130957f70a94c19213e:bisect-usb 2013-10-01-21:00:11 6e4664525b1db28f8c4e1130957f70a94c19213e compiling 297 real 1174 user 137 sys 441.25% cpu i386-randconfig-j4-09302234 2013-10-01-21:05:38 detecting boot state 3.11.0.... 1 2 3 5 6 9 10 12. 13 14 15 16. 17 18 21 23 25 27 31... 32............ 143 148 150 SUCCESS bisect: good commit v3.11 git bisect start 45c4ea0c4c1b8abffb575b865243fd1c69bbecd9 v3.11 -- Previous HEAD position was 6e46645... Linux 3.11 HEAD is now at c1be5a5... Linux 3.9 Bisecting: 6648 revisions left to test after this (roughly 13 steps) [39eda2aba6be642b71f2e0ad623dcb09fd9d79cf] Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc git bisect run /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/usb/obj-bisect running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/usb/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:39eda2aba6be642b71f2e0ad623dcb09fd9d79cf:bisect-usb 2013-10-01-21:27:53 39eda2aba6be642b71f2e0ad623dcb09fd9d79cf compiling 196 real 1249 user 119 sys 696.82% cpu i386-randconfig-j4-09302234 2013-10-01-21:31:25 detecting boot state 3.11.0-06739-g39eda2a.... 1 2..... 3.... 4. 5 6....... 7 9 10.... 11.. 12. 15 16 17. 19 22. 23... 24 26 30 32. 34 38.. 43 47 49 52 53 56 57. 61 62 90 110 122 130 146.............................................................................................................................................................................................................................................................................................................add_to_run_queue 4 ... 147. 149 150 SUCCESS Bisecting: 3323 revisions left to test after this (roughly 12 steps) [bff157b3ad4b9f6be0af6987fcd62deaf0f2b799] Merge branch 'slab/next' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/linux running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/usb/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:bff157b3ad4b9f6be0af6987fcd62deaf0f2b799:bisect-usb 2013-10-02-00:42:34 bff157b3ad4b9f6be0af6987fcd62deaf0f2b799 compiling 206 real 1311 user 124 sys 696.25% cpu i386-randconfig-j4-09302234 2013-10-02-00:46:14 detecting boot state 3.11.0-10064-gbff157b.. 2 4 5 10 11. 12 13 14. 15. 19 25 27. 30 31. 32 33 34 35 36 37. 38 40 42... 43.. 46...... 47 48.... 51 52 55 56. 79 137 147.............................................................................................................................................................................................................................................................................................................add_to_run_queue 3 .. 149 150 SUCCESS Bisecting: 1595 revisions left to test after this (roughly 11 steps) [f659a4f17bbecdbad57dd5c63a1783e5ec5fd792] Merge remote-tracking branch 'drm-intel/for-linux-next' running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/usb/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:f659a4f17bbecdbad57dd5c63a1783e5ec5fd792:bisect-usb 2013-10-02-03:47:56 f659a4f17bbecdbad57dd5c63a1783e5ec5fd792 compiling 197 real 1321 user 127 sys 735.72% cpu i386-randconfig-j4-09302234 2013-10-02-03:52:25 detecting boot state 3.12.0-rc2-01246-gf659a4f.... 1 12 14 15 19 25 28 30 31 33 38 41 44 48 50 54... 55 56 61. 62 68 75 98 105 143. 145.............................................................................................................................................................................................................................................................................................................add_to_run_queue 5 ... 147.. 148.............................................................................................................................................................................................................................................................................................................add_to_run_queue 2 ... 149 150 SUCCESS Bisecting: 798 revisions left to test after this (roughly 10 steps) [6405cd58ac5c0a6ed5f4f1308892147870b9d5cf] Merge remote-tracking branch 'regmap/for-next' running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/usb/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:6405cd58ac5c0a6ed5f4f1308892147870b9d5cf:bisect-usb 2013-10-02-09:17:03 6405cd58ac5c0a6ed5f4f1308892147870b9d5cf compiling 206 real 1298 user 121 sys 688.29% cpu i386-randconfig-j4-09302234 2013-10-02-09:20:44 detecting boot state 3.12.0-rc2-02043-g6405cd5 1.. TEST FAILURE mount: mounting proc on /proc failed: No such device [ 1.622982] BUG: unable to handle kernel NULL pointer dereference at 0000000c [ 1.623440] IP: [<41039700>] __dequeue_signal+0x80/0x190 [ 1.623440] *pde = 00000000 [ 1.623440] Oops: 0000 [#1] PREEMPT DEBUG_PAGEALLOC [ 1.623440] CPU: 0 PID: 131 Comm: rcS Not tainted 3.12.0-rc2-02043-g6405cd5 #447 [ 1.623440] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.623440] task: 4ccc6000 ti: 4ccd8000 task.ti: 4ccd8000 [ 1.623440] EIP: 0060:[<41039700>] EFLAGS: 00010002 CPU: 0 [ 1.623440] EIP is at __dequeue_signal+0x80/0x190 [ 1.623440] EAX: 00000000 EBX: 00000011 ECX: 4ccd9f0c EDX: 4ccc4b00 [ 1.623440] ESI: 00000000 EDI: 4ccae038 EBP: 4ccd9e68 ESP: 4ccd9e54 [ 1.623440] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068 [ 1.623440] CR0: 8005003b CR2: 0000000c CR3: 0ccd4000 CR4: 00000690 [ 1.623440] Stack: [ 1.623440] 00000046 4ccd9f0c 00000000 4ccc6000 4ccd9f0c 4ccd9e98 4103ac38 4ccc6d84 [ 1.623440] 4ccc6000 4ccd9f0c 4ccd9e98 4197ecda 4ccc6270 00000001 00000000 4ccc6000 [ 1.623440] 4ccd9f0c 4ccd9ed8 4103c21c 00000000 00000000 00000001 00000000 4ccd9ef8 [ 1.623440] Call Trace: [ 1.623440] [<4103ac38>] dequeue_signal+0x38/0x1c0 [ 1.623440] [<4197ecda>] ? _raw_spin_lock_irq+0x4a/0x50 [ 1.623440] [<4103c21c>] get_signal_to_deliver+0x20c/0x5b0 [ 1.623440] [<41001974>] do_signal+0x34/0x980 [ 1.623440] [<41049d82>] ? remove_wait_queue+0x22/0x30 [ 1.623440] [<4103c716>] ? __set_current_blocked+0x36/0x40 [ 1.623440] [<4197edfd>] ? _raw_spin_unlock_irq+0x2d/0x50 [ 1.623440] [<4103c716>] ? __set_current_blocked+0x36/0x40 [ 1.623440] [<4103c883>] ? sigprocmask+0x83/0xa0 [ 1.623440] [<4103c913>] ? SyS_rt_sigprocmask+0x73/0xc0 [ 1.623440] [<410022e9>] do_notify_resume+0x29/0x60 [ 1.623440] [<4197f941>] ? syscall_exit+0x8/0x21 [ 1.623440] [<4197fa26>] work_notifysig+0x26/0x30 [ 1.623440] Code: 89 e2 81 e2 00 e0 ff ff 80 62 08 fb e9 1a 01 00 00 8d 76 00 8d bc 27 00 00 00 00 8b 37 39 f7 0f 84 fa 00 00 00 31 d2 8d 74 26 00 <3b> 5e 0c 75 06 85 d2 75 17 89 f2 8b 36 39 f7 75 ef 8d 43 ff 0f [ 1.623440] EIP: [<41039700>] __dequeue_signal+0x80/0x190 SS:ESP 0068:4ccd9e54 [ 1.623440] CR2: 000000000000000c [ 1.623440] ---[ end trace 12b26bdb6d636e68 ]--- /kernel/i386-randconfig-j4-09302234/6405cd58ac5c0a6ed5f4f1308892147870b9d5cf/dmesg-yocto-jaketown-22:20131002092143:3.12.0-rc2-02043-g6405cd5:447 /kernel/i386-randconfig-j4-09302234/6405cd58ac5c0a6ed5f4f1308892147870b9d5cf/dmesg-yocto-jaketown-48:20131002092131:3.12.0-rc2-02043-g6405cd5:447 /kernel/i386-randconfig-j4-09302234/6405cd58ac5c0a6ed5f4f1308892147870b9d5cf/dmesg-yocto-cairo-19:20131002092201:3.12.0-rc2-02043-g6405cd5:447 Bisecting: 357 revisions left to test after this (roughly 9 steps) [5094001bc464c12d3e04eb73a5e0d5e8436f09f7] Merge remote-tracking branch 'omap_dss2/for-next' running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/usb/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:5094001bc464c12d3e04eb73a5e0d5e8436f09f7:bisect-usb 2013-10-02-09:22:18 5094001bc464c12d3e04eb73a5e0d5e8436f09f7 compiling 179 real 1304 user 121 sys 794.92% cpu i386-randconfig-j4-09302234 2013-10-02-09:25:32 detecting boot state 3.12.0-rc2-01685-g5094001.. 1 4 7 8. 11 12 13 15 16. 17 19. 21... 22.... 23....... 26. 27 28 31...... 34 36 39.. 40 46. 63 64 69 82 104 119 129 138 142.............................................................................................................................................................................................................................................................................................................add_to_run_queue 8 .. 144 150 SUCCESS Bisecting: 155 revisions left to test after this (roughly 8 steps) [8f31410ee9917e8648c7cf7f45e22320c166998a] Merge remote-tracking branch 'spi/for-next' running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/usb/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:8f31410ee9917e8648c7cf7f45e22320c166998a:bisect-usb 2013-10-02-12:28:36 8f31410ee9917e8648c7cf7f45e22320c166998a compiling 85 real 344 user 38 sys 448.81% cpu i386-randconfig-j4-09302234 2013-10-02-12:30:16 detecting boot state 3.12.0-rc2-01887-g8f31410. 6 10 18 31 33 38 39 41 42.. 45 46 48 57 68 76 82 93 100 110 114 127.............................................................................................................................................................................................................................................................................................................add_to_run_queue 23 .. 131 146 149.............................................................................................................................................................................................................................................................................................................add_to_run_queue 1 .... 150 SUCCESS Bisecting: 85 revisions left to test after this (roughly 6 steps) [6f014a7ea91f80f765ba700dcd1728680ba5c58e] Merge remote-tracking branch 'tip/auto-latest' running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/usb/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:6f014a7ea91f80f765ba700dcd1728680ba5c58e:bisect-usb 2013-10-02-17:48:22 6f014a7ea91f80f765ba700dcd1728680ba5c58e compiling 189 real 1324 user 125 sys 764.86% cpu i386-randconfig-j4-09302234 2013-10-02-17:51:43 detecting boot state 3.12.0-rc2-01957-g6f014a7. TEST FAILURE [ 1.814772] Write protecting the kernel read-only data: 3420k [ 1.825143] ------------[ cut here ]------------ [ 1.825613] WARNING: CPU: 0 PID: 10 at /c/wfg/usb/lib/debugobjects.c:260 debug_print_object+0x8a/0xa0() [ 1.826109] ODEBUG: active_state inactive (active state 0) object type: rcu_head hint: (null) [ 1.826109] CPU: 0 PID: 10 Comm: rcuop/0 Not tainted 3.12.0-rc2-01957-g6f014a7 #450 [ 1.826109] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 1.826109] 41c269a9 4d449e2c 419705e9 4d449e5c 410312bb 41c27978 4d449e88 0000000a [ 1.826109] 41c269a9 00000104 414219fa 414219fa 468df710 41ce553c 4222f64c 4d449e74 [ 1.826109] 4103132e 00000009 4d449e6c 41c27978 4d449e88 4d449ea8 414219fa 41c269a9 [ 1.826109] Call Trace: [ 1.826109] [<419705e9>] dump_stack+0x16/0x18 [ 1.826109] [<410312bb>] warn_slowpath_common+0x6b/0x90 [ 1.826109] [<414219fa>] ? debug_print_object+0x8a/0xa0 [ 1.826109] [<414219fa>] ? debug_print_object+0x8a/0xa0 [ 1.826109] [<4103132e>] warn_slowpath_fmt+0x2e/0x30 [ 1.826109] [<414219fa>] debug_print_object+0x8a/0xa0 [ 1.826109] [<41422453>] ? debug_object_active_state+0x53/0xe0 [ 1.826109] [<4142248a>] debug_object_active_state+0x8a/0xe0 [ 1.826109] [<41074768>] rcu_nocb_kthread+0x228/0x2e0 [ 1.826109] [<41049e90>] ? abort_exclusive_wait+0x70/0x70 [ 1.826109] [<41074540>] ? rcu_start_gp+0x30/0x30 [ 1.826109] [<410494e3>] kthread+0x83/0xa0 [ 1.826109] [<4197fefb>] ret_from_kernel_thread+0x1b/0x30 [ 1.826109] [<41049460>] ? __kthread_unpark+0x40/0x40 [ 1.826109] ---[ end trace 1c655d73fef5827f ]--- /kernel/i386-randconfig-j4-09302234/6f014a7ea91f80f765ba700dcd1728680ba5c58e/dmesg-quantal-xps-2:20131002175155:3.12.0-rc2-01957-g6f014a7:450 Bisecting: 24 revisions left to test after this (roughly 5 steps) [bce56fbc0f165658f7e0715fedc8d39840bae31c] Merge branch 'sched/core' running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/usb/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:bce56fbc0f165658f7e0715fedc8d39840bae31c:bisect-usb 2013-10-02-17:52:16 bce56fbc0f165658f7e0715fedc8d39840bae31c compiling 186 real 1326 user 128 sys 779.83% cpu i386-randconfig-j4-09302234 2013-10-02-17:55:33 detecting boot state 3.12.0-rc2-00095-gbce56fb... TEST FAILURE mount: mounting proc on /proc failed: No such device [ 2.926194] BUG: unable to handle kernel NULL pointer dereference at (null) [ 2.927153] IP: [<410b3256>] __fput+0x46/0x200 [ 2.927153] *pde = 00000000 [ 2.927153] Oops: 0000 [#1] PREEMPT DEBUG_PAGEALLOC [ 2.927153] CPU: 0 PID: 23 Comm: kworker/0:1 Not tainted 3.12.0-rc2-00095-gbce56fb #451 [ 2.927153] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.927153] Workqueue: events delayed_fput [ 2.927153] task: 4edff000 ti: 4ee06000 task.ti: 4ee06000 [ 2.927153] EIP: 0060:[<410b3256>] EFLAGS: 00010212 CPU: 0 [ 2.927153] EIP is at __fput+0x46/0x200 [ 2.927153] EAX: 00000000 EBX: 4cc5d980 ECX: 00000000 EDX: 0000001d [ 2.927153] ESI: 00000010 EDI: 00000000 EBP: 4ee07eb4 ESP: 4ee07e8c [ 2.927153] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 [ 2.927153] CR0: 8005003b CR2: 00000000 CR3: 00072000 CR4: 00000690 [ 2.927153] Stack: [ 2.927153] 4ee07eec 00000000 4ee07ec0 00000246 00000000 00000000 00000000 4cc5ddf8 [ 2.927153] 00000000 00000000 4ee07ec0 410b3427 4ed0e660 4ee07f08 4104372b 00000000 [ 2.927153] 00000001 00000000 410436f8 00000000 4ec1e738 4fff0200 41ce0ec0 4ed0e660 [ 2.927153] Call Trace: [ 2.927153] [<410b3427>] delayed_fput+0x17/0x30 [ 2.927153] [<4104372b>] process_one_work+0x27b/0x440 [ 2.927153] [<410436f8>] ? process_one_work+0x248/0x440 [ 2.927153] [<41043ad7>] worker_thread+0x1e7/0x360 [ 2.927153] [<410438f0>] ? process_one_work+0x440/0x440 [ 2.927153] [<41049763>] kthread+0x83/0xa0 [ 2.927153] [<4197c33b>] ret_from_kernel_thread+0x1b/0x30 [ 2.927153] [<410496e0>] ? __kthread_unpark+0x40/0x40 [ 2.927153] Code: c9 ba e8 00 00 00 b8 24 8d c0 41 e8 d5 0c fa ff 8b 43 10 89 c1 89 45 e8 8b 53 40 89 d0 83 e0 02 83 f8 01 19 f6 83 e6 08 83 c6 08 <8b> 01 25 00 f0 ff ff 66 3d 00 40 75 06 81 ce 00 00 00 40 81 e2 [ 2.927153] EIP: [<410b3256>] __fput+0x46/0x200 SS:ESP 0068:4ee07e8c [ 2.927153] CR2: 0000000000000000 [ 2.968064] invalid opcode: 0000 [#2] PREEMPT DEBUG_PAGEALLOC [ 2.969021] CPU: 0 PID: 10 Comm: rcuop/0 Tainted: G D 3.12.0-rc2-00095-gbce56fb #451 [ 2.969021] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 2.969021] task: 4ec37000 ti: 4ec48000 task.ti: 4ec48000 [ 2.969021] EIP: 0060:[<4cc74de1>] EFLAGS: 00010203 CPU: 0 [ 2.969021] EIP is at 0x4cc74de1 [ 2.969021] EAX: c0998e9b EBX: 4cc7c0c0 ECX: 4141664c EDX: 4cc74dc0 [ 2.969021] ESI: 4cc74dc5 EDI: 00000002 EBP: 4ec49f34 ESP: 4ec49ee4 [ 2.969021] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 [ 2.969021] CR0: 80050033 CR2: 08054000 CR3: 00072000 CR4: 00000690 [ 2.969021] Stack: [ 2.969021] 410749d2 00000000 41ce3d30 4ec37000 4cc74000 41ce3d18 41ce3d20 41ce3d24 [ 2.969021] 00000236 41ce3c80 4cc5dd34 00000000 00000000 4ec37000 4104a110 4ec49f20 [ 2.969021] 4ec49f20 4ec29e98 41ce3c80 41074770 4ec49fac 41049763 00000000 4ec49f6c [ 2.969021] Call Trace: [ 2.969021] [<410749d2>] ? rcu_nocb_kthread+0x262/0x2e0 [ 2.969021] [<4104a110>] ? abort_exclusive_wait+0x70/0x70 [ 2.969021] [<41074770>] ? rcu_start_gp+0x30/0x30 [ 2.969021] [<41049763>] kthread+0x83/0xa0 [ 2.969021] [<4197c33b>] ret_from_kernel_thread+0x1b/0x30 [ 2.969021] [<410496e0>] ? __kthread_unpark+0x40/0x40 [ 2.969021] Code: 0a 41 54 00 00 00 02 00 3e 07 40 9b 8e 99 c0 4d c7 4c 90 b7 c0 4e 00 e0 d0 4e d8 89 d0 4e 80 dd 98 41 01 00 00 00 ad 4e ad de ff ff ff ff ff ff ff 04 3e 20 42 00 00 00 00 00 00 00 00 50 8d [ 2.969021] EIP: [<4cc74de1>] 0x4cc74de1 SS:ESP 0068:4ec49ee4 [ 3.003406] ---[ end trace b4566c73d7c93677 ]--- /kernel/i386-randconfig-j4-09302234/bce56fbc0f165658f7e0715fedc8d39840bae31c/dmesg-yocto-lkp-tt02-16:20131002082403:3.12.0-rc2-00095-gbce56fb:451 Bisecting: 22 revisions left to test after this (roughly 5 steps) [c2daa3bed53a81171cf8c1a36db798e82b91afe8] sched, x86: Provide a per-cpu preempt_count implementation running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/usb/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:c2daa3bed53a81171cf8c1a36db798e82b91afe8:bisect-usb 2013-10-02-17:57:06 c2daa3bed53a81171cf8c1a36db798e82b91afe8 compiling 187 real 1306 user 129 sys 764.74% cpu i386-randconfig-j4-09302234 2013-10-02-18:00:23 detecting boot state 3.12.0-rc1-00060-gc2daa3b.. 2 TEST FAILURE BUG: kernel early hang without any printk output Command line: hung_task_panic=1 rcutree.rcu_cpu_stall_timeout=100 log_buf_len=8M ignore_loglevel debug sched_debug apic=debug dynamic_printk sysrq_always_enabled panic=10 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw link=/kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:c2daa3bed53a81171cf8c1a36db798e82b91afe8:bisect-usb/.vmlinuz-c2daa3bed53a81171cf8c1a36db798e82b91afe8-20131002180021-132-ant branch=next/master BOOT_IMAGE=/kernel/i386-randconfig-j4-09302234/c2daa3bed53a81171cf8c1a36db798e82b91afe8/vmlinuz-3.12.0-rc1-00060-gc2daa3b noapic nolapic nohz=off Early hang kernel: vmlinuz-3.12.0-rc1-00060-gc2daa3b 3.12.0-rc1-00060-gc2daa3b #452 /kernel/i386-randconfig-j4-09302234/c2daa3bed53a81171cf8c1a36db798e82b91afe8/dmesg-quantal-waimea-13:20131003015809:3.12.0-rc1-00060-gc2daa3b:452 /kernel/i386-randconfig-j4-09302234/c2daa3bed53a81171cf8c1a36db798e82b91afe8/dmesg-quantal-waimea-14:20131003015754:3.12.0-rc1-00060-gc2daa3b:452 /kernel/i386-randconfig-j4-09302234/c2daa3bed53a81171cf8c1a36db798e82b91afe8/dmesg-quantal-waimea-7:20131003015741:3.12.0-rc1-00060-gc2daa3b:452 /kernel/i386-randconfig-j4-09302234/c2daa3bed53a81171cf8c1a36db798e82b91afe8/dmesg-quantal-bens-4:20131002180134:3.12.0-rc1-00060-gc2daa3b:452 /kernel/i386-randconfig-j4-09302234/c2daa3bed53a81171cf8c1a36db798e82b91afe8/dmesg-quantal-lkp-st01-10:20131002180058:3.12.0-rc1-00060-gc2daa3b:452 /kernel/i386-randconfig-j4-09302234/c2daa3bed53a81171cf8c1a36db798e82b91afe8/dmesg-quantal-lkp-st01-9:20131002180114:3.12.0-rc1-00060-gc2daa3b:452 /kernel/i386-randconfig-j4-09302234/c2daa3bed53a81171cf8c1a36db798e82b91afe8/dmesg-quantal-lkp-tt02-18:20131002082901:3.12.0-rc1-00060-gc2daa3b:452 /kernel/i386-randconfig-j4-09302234/c2daa3bed53a81171cf8c1a36db798e82b91afe8/dmesg-quantal-lkp-tt02-21:20131002082845:3.12.0-rc1-00060-gc2daa3b:452 Bisecting: 10 revisions left to test after this (roughly 4 steps) [4314895165623879937f46d767673654662b570c] sched: Micro-optimize by dropping unnecessary task_rq() calls running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/usb/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:4314895165623879937f46d767673654662b570c:bisect-usb 2013-10-02-18:01:55 4314895165623879937f46d767673654662b570c compiling 181 real 1286 user 123 sys 775.79% cpu i386-randconfig-j4-09302234 2013-10-02-18:05:07 detecting boot state 3.12.0-rc1-00049-g4314895.. 4 13 27 31 41 43 45 52 53 65 76 77 86 95. 103 108 110 112 113 114 117 128 143 150 SUCCESS Bisecting: 5 revisions left to test after this (roughly 3 steps) [4a2b4b222743bb07fedf985b884550f2ca067ea9] sched: Introduce preempt_count accessor functions running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/usb/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:4a2b4b222743bb07fedf985b884550f2ca067ea9:bisect-usb 2013-10-02-18:18:38 4a2b4b222743bb07fedf985b884550f2ca067ea9 compiling 197 real 1302 user 119 sys 720.59% cpu i386-randconfig-j4-09302234 2013-10-02-18:22:07 detecting boot state 3.12.0-rc1-00054-g4a2b4b2 2 TEST FAILURE [ 5.319463] Write protecting the kernel text: 9720k [ 5.321737] Write protecting the kernel read-only data: 3416k [ 5.356430] BUG: unable to handle kernel paging request at 05fe0060 [ 5.357250] IP: [<41046e30>] task_work_run+0x60/0xa0 [ 5.357250] *pde = 00000000 [ 5.357250] Oops: 0000 [#1] PREEMPT DEBUG_PAGEALLOC [ 5.357250] CPU: 0 PID: 132 Comm: rc.local Not tainted 3.12.0-rc1-00054-g4a2b4b2 #454 [ 5.357250] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 5.357250] task: 468e5000 ti: 468f6000 task.ti: 468f6000 [ 5.357250] EIP: 0060:[<41046e30>] EFLAGS: 00010206 CPU: 0 [ 5.357250] EIP is at task_work_run+0x60/0xa0 [ 5.357250] EAX: 05fe0060 EBX: 468dfa80 ECX: 00000000 EDX: 05fe0060 [ 5.357250] ESI: 468e52ac EDI: 468e5000 EBP: 468f7f9c ESP: 468f7f90 [ 5.357250] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 [ 5.357250] CR0: 8005003b CR2: 05fe0060 CR3: 068f2000 CR4: 00000690 [ 5.357250] Stack: [ 5.357250] 3851e903 38507ee8 37664ff4 468f7fac 41002300 4197cd9c 4fff01bc 468f6000 [ 5.357250] 4197c7c6 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 5.357250] 0000007b 0000007b 00000000 00000000 0000000b 377cf1d0 00000073 00000200 [ 5.357250] Call Trace: [ 5.357250] [<41002300>] do_notify_resume+0x50/0x60 [ 5.357250] [<4197cd9c>] ? sysenter_do_call+0x1e/0x37 [ 5.357250] [<4197c7c6>] work_notifysig+0x26/0x30 [ 5.357250] Code: eb 0b 89 f6 8d bc 27 00 00 00 00 31 c9 89 d0 0f b1 0e 39 c2 75 d5 85 d2 74 46 90 f3 90 8b 87 e4 02 00 00 85 c0 74 f4 31 db 66 90 <8b> 02 89 1a 85 c0 74 08 89 d3 89 c2 eb f2 66 90 89 d0 ff 52 04 [ 5.357250] EIP: [<41046e30>] task_work_run+0x60/0xa0 SS:ESP 0068:468f7f90 [ 5.357250] CR2: 0000000005fe0060 /kernel/i386-randconfig-j4-09302234/4a2b4b222743bb07fedf985b884550f2ca067ea9/dmesg-quantal-jaketown-2:20131002182224:3.12.0-rc1-00054-g4a2b4b2:454 /kernel/i386-randconfig-j4-09302234/4a2b4b222743bb07fedf985b884550f2ca067ea9/dmesg-quantal-jaketown-6:20131002182225:3.12.0-rc1-00054-g4a2b4b2:454 Bisecting: 2 revisions left to test after this (roughly 1 step) [b021fe3e25094fbec22d0eff846d2adeee1b9736] sched, rcu: Make RCU use resched_cpu() running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/usb/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:b021fe3e25094fbec22d0eff846d2adeee1b9736:bisect-usb 2013-10-02-18:22:40 b021fe3e25094fbec22d0eff846d2adeee1b9736 compiling 180 real 1314 user 122 sys 795.94% cpu i386-randconfig-j4-09302234 2013-10-02-18:25:51 detecting boot state 3.12.0-rc1-00051-gb021fe3.. TEST FAILURE [ 7.647977] Write protecting the kernel text: 9720k [ 7.649053] Write protecting the kernel read-only data: 3416k [ 7.688052] BUG: unable to handle kernel paging request at 051e00c0 [ 7.689013] IP: [<41074a50>] rcu_nocb_kthread+0x1f0/0x2e0 [ 7.689013] *pde = 00000000 [ 7.689013] Oops: 0000 [#1] PREEMPT DEBUG_PAGEALLOC [ 7.689013] CPU: 0 PID: 10 Comm: rcuop/0 Not tainted 3.12.0-rc1-00051-gb021fe3 #455 [ 7.689013] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 7.689013] task: 4d437000 ti: 4d448000 task.ti: 4d448000 [ 7.689013] EIP: 0060:[<41074a50>] EFLAGS: 00010206 CPU: 0 [ 7.689013] EIP is at rcu_nocb_kthread+0x1f0/0x2e0 [ 7.689013] EAX: 00000000 EBX: 051e00c0 ECX: 00000000 EDX: 4d448000 [ 7.689013] ESI: 051e00c0 EDI: 0000000b EBP: 4d449f34 ESP: 4d449ee8 [ 7.689013] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 [ 7.689013] CR0: 8005003b CR2: 051e00c0 CR3: 0686c000 CR4: 00000690 [ 7.689013] Stack: [ 7.689013] 00000000 41ce3d30 4d437000 468505e0 41ce3d18 41ce3d20 41ce3d24 0000120d [ 7.689013] 41ce3c80 40108300 00000000 00000000 4d437000 4104a250 4d449f20 4d449f20 [ 7.689013] 4d429e98 41ce3c80 41074860 4d449fac 410498a3 00000000 4d449f6c 41ce3c80 [ 7.689013] Call Trace: [ 7.689013] [<4104a250>] ? abort_exclusive_wait+0x70/0x70 [ 7.689013] [<41074860>] ? rcu_start_gp+0x30/0x30 [ 7.689013] [<410498a3>] kthread+0x83/0xa0 [ 7.689013] [<4197cd5b>] ret_from_kernel_thread+0x1b/0x30 [ 7.689013] [<41049820>] ? __kthread_unpark+0x40/0x40 [ 7.689013] Code: 0f 89 f5 00 00 00 8b 43 04 8b 40 08 a8 04 0f 85 bf 00 00 00 e8 02 58 90 00 eb d0 8b 5d c0 c7 45 dc 00 00 00 00 31 ff 8d 74 26 00 <8b> 33 85 f6 75 1a 39 5d d8 74 15 90 8d 74 26 00 b8 01 00 00 00 [ 7.689013] EIP: [<41074a50>] rcu_nocb_kthread+0x1f0/0x2e0 SS:ESP 0068:4d449ee8 [ 7.689013] CR2: 00000000051e00c0 [ 7.719228] ------------[ cut here ]------------ /kernel/i386-randconfig-j4-09302234/b021fe3e25094fbec22d0eff846d2adeee1b9736/dmesg-yocto-xps-3:20131002182609:3.12.0-rc1-00051-gb021fe3:455 /kernel/i386-randconfig-j4-09302234/b021fe3e25094fbec22d0eff846d2adeee1b9736/dmesg-quantal-lkp-st01-11:20131002182619:3.12.0-rc1-00051-gb021fe3:455 /kernel/i386-randconfig-j4-09302234/b021fe3e25094fbec22d0eff846d2adeee1b9736/dmesg-quantal-lkp-tt02-22:20131002085343:3.12.0-rc1-00051-gb021fe3:455 /kernel/i386-randconfig-j4-09302234/b021fe3e25094fbec22d0eff846d2adeee1b9736/dmesg-yocto-lkp-st01-7:20131002182617:3.12.0-rc1-00051-gb021fe3:455 /kernel/i386-randconfig-j4-09302234/b021fe3e25094fbec22d0eff846d2adeee1b9736/dmesg-quantal-bens-3:20131002182620:3.12.0-rc1-00051-gb021fe3:455 /kernel/i386-randconfig-j4-09302234/b021fe3e25094fbec22d0eff846d2adeee1b9736/dmesg-yocto-bens-3:20131002182621:3.12.0-rc1-00051-gb021fe3:455 /kernel/i386-randconfig-j4-09302234/b021fe3e25094fbec22d0eff846d2adeee1b9736/dmesg-quantal-waimea-4:20131003022314:3.12.0-rc1-00051-gb021fe3:455 Bisecting: 0 revisions left to test after this (roughly 0 steps) [0c44c2d0f459cd7e275242b72f500137c4fa834d] x86: Use asm goto to implement better modify_and_test() functions running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/usb/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:0c44c2d0f459cd7e275242b72f500137c4fa834d:bisect-usb 2013-10-02-18:26:52 0c44c2d0f459cd7e275242b72f500137c4fa834d compiling 19 real 36 user 12 sys 247.45% cpu i386-randconfig-j4-09302234 2013-10-02-18:27:21 detecting boot state 3.12.0-rc1-00050-g0c44c2d. TEST FAILURE [ 8.533421] Write protecting the kernel read-only data: 3416k [ 8.552122] tsc: Refined TSC clocksource calibration: 2393.909 MHz [ 8.584280] BUG: unable to handle kernel paging request at 376fd000 [ 8.585015] IP: [<41046e30>] task_work_run+0x60/0xa0 [ 8.585015] *pde = 068f5067 *pte = 00000000 [ 8.585015] Oops: 0000 [#1] PREEMPT DEBUG_PAGEALLOC [ 8.585015] CPU: 0 PID: 132 Comm: rc.local Not tainted 3.12.0-rc1-00050-g0c44c2d #456 [ 8.585015] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 8.585015] task: 468e7440 ti: 468f6000 task.ti: 468f6000 [ 8.585015] EIP: 0060:[<41046e30>] EFLAGS: 00010206 CPU: 0 [ 8.585015] EIP is at task_work_run+0x60/0xa0 [ 8.585015] EAX: 376fd000 EBX: 468e53d8 ECX: 00000000 EDX: 376fd000 [ 8.585015] ESI: 468e76ec EDI: 468e7440 EBP: 468f7f9c ESP: 468f7f90 [ 8.585015] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 [ 8.585015] CR0: 8005003b CR2: 376fd000 CR3: 068d7000 CR4: 00000690 [ 8.585015] Stack: [ 8.585015] 39470903 39459ee8 376d2ff4 468f7fac 41002300 4197cdbc 4fff01bc 468f6000 [ 8.585015] 4197c7e6 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 8.585015] 0000007b 0000007b 00000000 00000000 0000000b 376fe1d0 00000073 00000200 [ 8.585015] Call Trace: [ 8.585015] [<41002300>] do_notify_resume+0x50/0x60 [ 8.585015] [<4197cdbc>] ? sysenter_do_call+0x1e/0x37 [ 8.585015] [<4197c7e6>] work_notifysig+0x26/0x30 [ 8.585015] Code: eb 0b 89 f6 8d bc 27 00 00 00 00 31 c9 89 d0 0f b1 0e 39 c2 75 d5 85 d2 74 46 90 f3 90 8b 87 e4 02 00 00 85 c0 74 f4 31 db 66 90 <8b> 02 89 1a 85 c0 74 08 89 d3 89 c2 eb f2 66 90 89 d0 ff 52 04 [ 8.585015] EIP: [<41046e30>] task_work_run+0x60/0xa0 SS:ESP 0068:468f7f90 [ 8.585015] CR2: 00000000376fd000 [ 8.631055] CRED: Invalid credentials /kernel/i386-randconfig-j4-09302234/0c44c2d0f459cd7e275242b72f500137c4fa834d/dmesg-quantal-xps-6:20131002182733:3.12.0-rc1-00050-g0c44c2d:456 /kernel/i386-randconfig-j4-09302234/0c44c2d0f459cd7e275242b72f500137c4fa834d/dmesg-quantal-lkp-tt02-22:20131002085511:3.12.0-rc1-00050-g0c44c2d:456 /kernel/i386-randconfig-j4-09302234/0c44c2d0f459cd7e275242b72f500137c4fa834d/dmesg-quantal-xps-5:20131002182740:3.12.0-rc1-00050-g0c44c2d:456 /kernel/i386-randconfig-j4-09302234/0c44c2d0f459cd7e275242b72f500137c4fa834d/dmesg-yocto-cairo-19:20131002182741:3.12.0-rc1-00050-g0c44c2d:456 0c44c2d0f459cd7e275242b72f500137c4fa834d is the first bad commit commit 0c44c2d0f459cd7e275242b72f500137c4fa834d Author: Peter Zijlstra Date: Wed Sep 11 15:19:24 2013 +0200 x86: Use asm goto to implement better modify_and_test() functions Linus suggested using asm goto to get rid of the typical SETcc + TEST instruction pair -- which also clobbers an extra register -- for our typical modify_and_test() functions. Because asm goto doesn't allow output fields it has to include an unconditinal memory clobber when it changes a memory variable to force a reload. Luckily all atomic ops already imply a compiler barrier to go along with their memory barrier semantics. Suggested-by: Linus Torvalds Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/n/tip-0mtn9siwbeo1d33bap1422se@git.kernel.org Signed-off-by: Ingo Molnar :040000 040000 512c7965864218ef5a40569f80dd617fc75b60f9 22c5286cc1aa1e336c8b0d7efba08f3f3eff0640 M arch bisect run success ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:4314895165623879937f46d767673654662b570c:bisect-usb 2013-10-02-18:27:54 4314895165623879937f46d767673654662b570c reuse /kernel/i386-randconfig-j4-09302234/4314895165623879937f46d767673654662b570c/vmlinuz-3.12.0-rc1-00049-g4314895 2013-10-02-18:27:55 detecting boot state ... 3 6 9 12 13 14 19 21 23 24 27.. 29 30 31. 34. 38 42 44.. 46 47.. 48 50 51 52 55 56.. 60 64 67 74 80 111 134 151 171 200 209 238 266 284 301 311 326 366 394 404 414 420 445 446. 447.............................................................................................................................................................................................................................................................................................................add_to_run_queue 3 ...... 448. 449..... 450 SUCCESS ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:a0cf1abc25ac197dd97b857c0f6341066a8cb1cf:bisect-usb TEST FAILURE BUG: kernel early hang without any printk output Command line: hung_task_panic=1 rcutree.rcu_cpu_stall_timeout=100 log_buf_len=8M ignore_loglevel debug sched_debug apic=debug dynamic_printk sysrq_always_enabled panic=10 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw link=/kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master/.vmlinuz-a0cf1abc25ac197dd97b857c0f6341066a8cb1cf-20131001014715-9-ant branch=next/master BOOT_IMAGE=/kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/vmlinuz-3.12.0-rc2-next-20130927-03100-ga0cf1ab noapic nolapic nohz=off Early hang kernel: vmlinuz-3.12.0-rc2-next-20130927-03100-ga0cf1ab 3.12.0-rc2-next-20130927-03100-ga0cf1ab #1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-bens-2:20131001015547:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-bens-3:20131001001759:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-lkp-st01-11:20131001021526:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-lkp-tt02-14:20130930144439:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-lkp-tt02-14:20130930163829:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-lkp-tt02-15:20130930144440:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-lkp-tt02-23:20130930144505:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-lkp-tt02-3:20130930144450:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-lkp-tt02-8:20130930144433:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-waimea-2:20131001095104:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-waimea-4:20131001101104:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-waimea-9:20131001211210:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-xps-2:20131001001823:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-yocto-bens-4:20131001021412:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-yocto-lkp-st01-3:20131001021510:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-yocto-lkp-tt02-9:20130930144416:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 [detached HEAD f2e9bb0] Revert "x86: Use asm goto to implement better modify_and_test() functions" 5 files changed, 92 insertions(+), 58 deletions(-) delete mode 100644 arch/x86/include/asm/rmwcc.h ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:f2e9bb0aeb9640f3cbd3aa5e648fa7604b6d1f7c:bisect-usb 2013-10-02-21:38:33 f2e9bb0aeb9640f3cbd3aa5e648fa7604b6d1f7c compiling i386-randconfig-j4-09302234: make prepare failed 2013-10-02-21:38:41 f2e9bb0aeb9640f3cbd3aa5e648fa7604b6d1f7c SKIP BROKEN BUILD Check erros in /cc/wfg/usb-bisect and /tmp/kernel/i386-randconfig-j4-09302234/f2e9bb0aeb9640f3cbd3aa5e648fa7604b6d1f7c ========= upstream ========= Fetching linus ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:c31eeaced22ce8bd61268a3c595d542bb38c0a4f:bisect-usb 2013-10-02-21:38:44 c31eeaced22ce8bd61268a3c595d542bb38c0a4f compiling 2013-10-02-21:42:09 detecting boot state 3.12.0-rc3-00186-gc31eeac... 1 4. 7. 8 12.... 14. 18 32 53 77 92 107 148 169 189 210 257 278 314 324 370 384 421 450 SUCCESS ========= linux-next ========= Fetching next ls -a /kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master:a0cf1abc25ac197dd97b857c0f6341066a8cb1cf:bisect-usb TEST FAILURE BUG: kernel early hang without any printk output Command line: hung_task_panic=1 rcutree.rcu_cpu_stall_timeout=100 log_buf_len=8M ignore_loglevel debug sched_debug apic=debug dynamic_printk sysrq_always_enabled panic=10 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal root=/dev/ram0 rw link=/kernel-tests/run-queue/kvm/i386-randconfig-j4-09302234/next:master/.vmlinuz-a0cf1abc25ac197dd97b857c0f6341066a8cb1cf-20131001014715-9-ant branch=next/master BOOT_IMAGE=/kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/vmlinuz-3.12.0-rc2-next-20130927-03100-ga0cf1ab noapic nolapic nohz=off Early hang kernel: vmlinuz-3.12.0-rc2-next-20130927-03100-ga0cf1ab 3.12.0-rc2-next-20130927-03100-ga0cf1ab #1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-bens-2:20131001015547:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-bens-3:20131001001759:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-lkp-st01-11:20131001021526:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-lkp-tt02-14:20130930144439:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-lkp-tt02-14:20130930163829:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-lkp-tt02-15:20130930144440:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-lkp-tt02-23:20130930144505:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-lkp-tt02-3:20130930144450:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-lkp-tt02-8:20130930144433:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-waimea-2:20131001095104:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-waimea-4:20131001101104:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-waimea-9:20131001211210:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-quantal-xps-2:20131001001823:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-yocto-bens-4:20131001021412:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-yocto-lkp-st01-3:20131001021510:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1 /kernel/i386-randconfig-j4-09302234/a0cf1abc25ac197dd97b857c0f6341066a8cb1cf/dmesg-yocto-lkp-tt02-9:20130930144416:3.12.0-rc2-next-20130927-03100-ga0cf1ab:1