git checkout 272b98c6455f00884f0350f775c5342358ebb73f Previous HEAD position was 5fbc0a6... Merge remote-tracking branch 'pinctrl/for-next' into kbuild_tmp HEAD is now at 272b98c... Linux 3.12-rc1 ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:272b98c6455f00884f0350f775c5342358ebb73f:bisect-net 2013-09-23-18:40:07 272b98c6455f00884f0350f775c5342358ebb73f reuse /kernel/i386-randconfig-r0-0923/272b98c6455f00884f0350f775c5342358ebb73f/vmlinuz-3.12.0-rc1 2013-09-23-18:40:07 detecting boot state .. 2 5 17 26 28 33 40 53 57 TEST FAILURE Increasing repeat count from 370 to 495 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-r0-0923/m68knommu:cfmmu/.vmlinuz-272b98c6455f00884f0350f775c5342358ebb73f-20130923152130-4-ant branch=m68knommu/cfmmu BOOT_IMAGE=/kernel/i386-randconfig-r0-0923/272b98c6455f00884f0350f775c5342358ebb73f/vmlinuz-3.12.0-rc1 noapic nolapic nohz=off Early hang kernel: vmlinuz-3.12.0-rc1 3.12.0-rc1 #9 /kernel/i386-randconfig-r0-0923/272b98c6455f00884f0350f775c5342358ebb73f/dmesg-quantal-lkp-st01-8:20130923184517:3.12.0-rc1:9 bisect: bad commit 272b98c6455f00884f0350f775c5342358ebb73f git checkout v3.11 Previous HEAD position was 272b98c... Linux 3.12-rc1 HEAD is now at 6e46645... Linux 3.11 ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:6e4664525b1db28f8c4e1130957f70a94c19213e:bisect-net 2013-09-23-18:45:44 6e4664525b1db28f8c4e1130957f70a94c19213e compiling 441 real 2246 user 196 sys 553.21% cpu i386-randconfig-r0-0923 2013-09-23-18:55:14 detecting boot state 3.11.0. 3 4 12 15 26 39 45 55 64 76 84 89 92 93 94 105 111. 112 158 171 179 189 205 215 231 252 262 282 290 310 328 344 355 366 380 394 415 447 462 468 477......... 478.............................................................................................................................................................................................................................................................................................................add_to_run_queue 17 ... 479.. 481 482... 483. 484........ 485...... 486.... 487... 488.. 489.. 490. 493.... 494.... 495 SUCCESS bisect: good commit v3.11 git bisect start 272b98c6455f00884f0350f775c5342358ebb73f v3.11 -- Previous HEAD position was 6e46645... Linux 3.11 Switched to branch 'master' Your branch is behind 'origin/master' by 41213 commits, and can be fast-forwarded. (use "git pull" to update your local branch) Bisecting: 5094 revisions left to test after this (roughly 12 steps) [57d730924d5cc2c3e280af16a9306587c3a511db] Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip git bisect run /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/net/obj-bisect running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/net/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:57d730924d5cc2c3e280af16a9306587c3a511db:bisect-net 2013-09-23-22:21:25 57d730924d5cc2c3e280af16a9306587c3a511db compiling 323 real 2415 user 203 sys 810.45% cpu i386-randconfig-r0-0923 2013-09-23-22:27:00 detecting boot state 3.11.0-05058-g57d7309. 1. 4 7 8 9 10 11 13 15. 17 18 19 20.. 21.. 22. 23 24. 25 27 28. 29.. 30 31.... 32. 34. 35............ 36 37. 38 39 40. 42. 43. 44. 46 48 49.... 56 63 66 67... 71 72 74 76 78.. 81 84 85 94 100 110 117 123 130 135 139 148 152 160 167 169 172 176 179 181 184 187 190 194 197. 198. 200. 201 203. 204 206 207. 208 210 214 221 228 239 260 266 278 293 301 312 315 333 359 374 386 399 419 436 444 450 462 467 470.............................................................................................................................................................................................................................................................................................................add_to_run_queue 25 471 473 478 479 485 492.... 494... 495 SUCCESS Bisecting: 2533 revisions left to test after this (roughly 11 steps) [27c7651a6a5f143eccd66db38c7a3035e1f8bcfb] Merge tag 'gpio-v3.12-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/net/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:27c7651a6a5f143eccd66db38c7a3035e1f8bcfb:bisect-net 2013-09-24-02:21:07 27c7651a6a5f143eccd66db38c7a3035e1f8bcfb compiling 283 real 2368 user 199 sys 904.81% cpu i386-randconfig-r0-0923 2013-09-24-02:25:59 27c7651a6a5f143eccd66db38c7a3035e1f8bcfb SKIP BROKEN BUILD Check erros in /cc/wfg/net-bisect and /tmp/kernel/i386-randconfig-r0-0923/27c7651a6a5f143eccd66db38c7a3035e1f8bcfb Bisecting: 2533 revisions left to test after this (roughly 11 steps) [7309e5022bdd6fe13124d42a6b7cf054311030a0] MAINTAINERS: update ath6kl git location running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/net/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:7309e5022bdd6fe13124d42a6b7cf054311030a0:bisect-net 2013-09-24-02:26:06 7309e5022bdd6fe13124d42a6b7cf054311030a0 compiling 250 real 2319 user 193 sys 1002.04% cpu i386-randconfig-r0-0923 2013-09-24-02:30:26 7309e5022bdd6fe13124d42a6b7cf054311030a0 SKIP BROKEN BUILD Check erros in /cc/wfg/net-bisect and /tmp/kernel/i386-randconfig-r0-0923/7309e5022bdd6fe13124d42a6b7cf054311030a0 Bisecting: 2533 revisions left to test after this (roughly 11 steps) [3bb22ec53e2bd12a241ed84359bffd591a40ab87] staging/lustre/ptlrpc: convert to new shrinker API running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/net/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:3bb22ec53e2bd12a241ed84359bffd591a40ab87:bisect-net 2013-09-24-02:30:29 3bb22ec53e2bd12a241ed84359bffd591a40ab87 compiling 293 real 2390 user 200 sys 881.58% cpu i386-randconfig-r0-0923 2013-09-24-02:35:37 detecting boot state 3.11.0-08762-g3bb22ec...... 2. 3 4 5... 6..... 7 9. 15 25 41 57 74 94 109 130 159 181 200 227 251 266 291 316 331 339 357 364 387 400 414 433 441 444. 451 456................................................................................... 457... 458.... 459... 460.............................................................................................................................................................................................................................................................................................................add_to_run_queue 35 .... 461......... 464 466 468 472 477 484 488.............................................................................................................................................................................................................................................................................................................add_to_run_queue 7 ..... 489.......... 490........................ 491... 492........ 493.............................................................................................................................................................................................................................................................................................................add_to_run_queue 2 ...... 495 SUCCESS Bisecting: 694 revisions left to test after this (roughly 10 steps) [a5b7c87f92076352dbff2fe0423ec255e1c9a71b] vmscan, memcg: do softlimit reclaim also for targeted reclaim running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/net/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:a5b7c87f92076352dbff2fe0423ec255e1c9a71b:bisect-net 2013-09-24-12:03:30 a5b7c87f92076352dbff2fe0423ec255e1c9a71b compiling 407 real 2340 user 209 sys 625.61% cpu i386-randconfig-r0-0923 2013-09-24-12:10:33 detecting boot state 3.11.0-09424-ga5b7c87.. 2 4. 5 9 10 12 15 18 21 23 27 29 31 TEST FAILURE [ 41.701734] pt: No ATAPI tape drive detected [ 41.704615] pg: pg version 1.02, major 97 [ 45.880042] INFO: rcu_sched self-detected stall on CPU { 1} (t=2100 jiffies g=4294967249 c=4294967248 q=0) [ 45.880042] sending NMI to all CPUs: [ 45.880042] NMI backtrace for cpu 1 [ 45.880042] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 3.11.0-09424-ga5b7c87 #252 [ 45.880042] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 45.880042] task: cc452020 ti: cc454000 task.ti: cc454000 [ 45.880042] EIP: 0060:[] EFLAGS: 00010046 CPU: 1 [ 45.880042] EIP is at native_apic_mem_write+0x12/0x14 [ 45.880042] EAX: ffffb300 EBX: 00000001 ECX: fffff000 EDX: 00000c00 [ 45.880042] ESI: 00000002 EDI: 00000800 EBP: cc455cdc ESP: cc455cdc [ 45.880042] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [ 45.880042] CR0: 8005003b CR2: ffffffff CR3: 0291d000 CR4: 000006d0 [ 45.880042] Stack: [ 45.880042] cc455cf4 c1027bcd 00000003 00000006 00000003 00000000 cc455d10 c1027e48 [ 45.880042] 00000002 00000000 00002710 ccbf70b8 00000000 cc455d18 c1027ec4 cc455d28 [ 45.880042] c10280ec c2308eed c2546dc0 cc455d64 c10a4b52 c23160ac 00000834 ffffffd1 [ 45.880042] Call Trace: [ 45.880042] [] __default_send_IPI_dest_field+0x61/0x67 [ 45.880042] [] default_send_IPI_mask_logical+0x79/0x87 [ 45.880042] [] default_send_IPI_all+0x26/0x37 [ 45.880042] [] arch_trigger_all_cpu_backtrace+0x41/0x69 [ 45.880042] [] rcu_check_callbacks+0x15f/0x3ed [ 45.880042] [] update_process_times+0x32/0x59 [ 45.880042] [] tick_nohz_handler+0xaf/0xff [ 45.880042] [] local_apic_timer_interrupt+0x46/0x4b [ 45.880042] [] smp_apic_timer_interrupt+0x25/0x34 [ 45.880042] [] apic_timer_interrupt+0x34/0x40 [ 45.880042] [] ? delayed_put_task_struct+0x41/0x64 [ 45.880042] [] ? intel_thermal_interrupt+0xfa/0x18b [ 45.880042] [] ? delay_tsc+0x51/0xa7 [ 45.880042] [] __delay+0xe/0x10 [ 45.880042] [] __const_udelay+0x1a/0x1c [ 45.880042] [] __udelay+0x13/0x15 [ 45.880042] [] on26_write_regr+0x223/0x388 [ 45.880042] [] pi_write_regr+0x11/0x17 [ 45.880042] [] pi_test_proto+0x77/0x102 [ 45.880042] [] pi_probe_mode+0x76/0xae [ 45.880042] [] pi_probe_unit+0x101/0x126 [ 45.880042] [] pi_init+0x15b/0x1da [ 45.880042] [] pg_init+0xda/0x2a4 [ 45.880042] [] ? pt_init+0x2a5/0x2a5 [ 45.880042] [] do_one_initcall+0xe4/0x19b [ 45.880042] [] ? strlen+0x9/0x1c [ 45.880042] [] ? do_early_param+0x73/0x73 [ 45.880042] [] ? parse_args+0x298/0x375 [ 45.880042] [] ? do_early_param+0x73/0x73 [ 45.880042] [] kernel_init_freeable+0x12a/0x1a2 [ 45.880042] [] ? kernel_init_freeable+0x12a/0x1a2 [ 45.880042] [] kernel_init+0xd/0xb9 [ 45.880042] [] ret_from_kernel_thread+0x1b/0x30 [ 45.880042] [] ? rest_init+0xb1/0xb1 [ 45.880042] Code: 00 5d c3 55 89 e5 50 9d 8d 74 26 00 5d c3 55 89 e5 fa 90 8d 74 26 00 5d c3 8b 0d 2c da 53 c2 55 89 e5 8d 84 08 00 c0 ff ff 89 10 <5d> c3 55 89 e5 57 56 89 c6 53 83 ec 08 83 f8 ff 89 55 ec 74 73 [ 45.900054] NMI backtrace for cpu 0 [ 45.900054] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.11.0-09424-ga5b7c87 #252 [ 45.900054] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 45.900054] task: c2532978 ti: c2520000 task.ti: c2520000 [ 45.900054] EIP: 0060:[] EFLAGS: 00200296 CPU: 0 [ 45.900054] EIP is at native_safe_halt+0x5/0x7 [ 45.900054] EAX: c2687778 EBX: 00000000 ECX: 00000000 EDX: 00000000 [ 45.900054] ESI: ffffffff EDI: 00000000 EBP: c2521f94 ESP: c2521f94 [ 45.900054] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 [ 45.900054] CR0: 8005003b CR2: 00000000 CR3: 0291d000 CR4: 000006d0 [ 45.900054] Stack: [ 45.900054] c2521f9c c10087d8 c2521fa4 c1008ce9 c2521fc4 c1076f2e 00000000 c70e4b35 [ 45.900054] e1be2e17 00000002 00000000 c291e800 c2521fd0 c1d7f500 00000000 c2521fe8 [ 45.900054] c27159c2 c278d0d0 bccdc7af 00000800 00020800 c2521ff8 c27152cf 00000800 [ 45.900054] Call Trace: [ 45.900054] [] default_idle+0x1e/0x30 [ 45.900054] [] arch_cpu_idle+0x17/0x20 [ 45.900054] [] cpu_startup_entry+0x19b/0x238 [ 45.900054] [] rest_init+0xac/0xb1 [ 45.900054] [] start_kernel+0x37b/0x382 [ 45.900054] [] i386_start_kernel+0x79/0x7d [ 45.900054] Code: 0f 22 e0 5d c3 55 89 e5 0f 09 5d c3 55 89 e5 9c 58 5d c3 55 89 e5 50 9d 5d c3 55 89 e5 fa 5d c3 55 89 e5 fb 5d c3 55 89 e5 fb f4 <5d> c3 55 89 e5 f4 5d c3 55 89 e5 57 89 c7 56 89 ce 53 53 8b 00 /kernel/i386-randconfig-r0-0923/a5b7c87f92076352dbff2fe0423ec255e1c9a71b/dmesg-quantal-lkp-tt02-13:20130924024033:3.11.0-09424-ga5b7c87:252 Bisecting: 347 revisions left to test after this (roughly 9 steps) [3d94ea51c1d8db6f41268a9d2aea5f5771e9a8d3] ocfs2: clean up dead code in ocfs2_acl_from_xattr() running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/net/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:3d94ea51c1d8db6f41268a9d2aea5f5771e9a8d3:bisect-net 2013-09-24-12:18:35 3d94ea51c1d8db6f41268a9d2aea5f5771e9a8d3 compiling 302 real 2415 user 217 sys 871.13% cpu i386-randconfig-r0-0923 2013-09-24-12:23:46 detecting boot state 3.11.0-09076-g3d94ea5.. 1 3 4 6 7. 9 11 12 13 16 18 21 24 26 30 32 43 49 58 62 67 72 83 92 102 111 126 129 138 148 154 165 177 183 189 200 209 220 231 242 256 262 272 282 286 295 303 316 324 330 339 347 351 362 374 387 406 416 429 437 447 453 464 474 476 477..... 478.............................................................................................................................................................................................................................................................................................................add_to_run_queue 17 ..... 479... 481.. 482. 484 487 494 495 SUCCESS Bisecting: 173 revisions left to test after this (roughly 8 steps) [d62a201f24cba74e2fbf9f6f7af86ff5f5e276fc] checkpatch: enforce sane perl version running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/net/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:d62a201f24cba74e2fbf9f6f7af86ff5f5e276fc:bisect-net 2013-09-24-15:40:52 d62a201f24cba74e2fbf9f6f7af86ff5f5e276fc compiling 394 real 2388 user 208 sys 658.23% cpu i386-randconfig-r0-0923 2013-09-24-15:47:38 detecting boot state 3.11.0-09250-gd62a201......... 1.......................... 2.......... 4.. 5.. 6... 8 9.................... 10 12. 14 15...... 16. 17 18 21..... 22.. 23. 24. 26 29 30 34 36 39. 49 59 66 79 TEST FAILURE Increasing repeat count from 495 to 585 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 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-r0-0923/linux-devel:devel-roam-i386-201309231807:d62a201f24cba74e2fbf9f6f7af86ff5f5e276fc:bisect-net/.vmlinuz-d62a201f24cba74e2fbf9f6f7af86ff5f5e276fc-20130924154736-272-ant branch=linux-devel/devel-roam-i386-201309231807 BOOT_IMAGE=/kernel/i386-randconfig-r0-0923/d62a201f24cba74e2fbf9f6f7af86ff5f5e276fc/vmlinuz-3.11.0-09250-gd62a201 noapic nolapic nohz=off Early hang kernel: vmlinuz-3.11.0-09250-gd62a201 3.11.0-09250-gd62a201 #254 /kernel/i386-randconfig-r0-0923/d62a201f24cba74e2fbf9f6f7af86ff5f5e276fc/dmesg-quantal-lkp-tt02-21:20130924070841:3.11.0-09250-gd62a201:254 Bisecting: 86 revisions left to test after this (roughly 7 steps) [83467efbdb7948146581a56cbd683a22a0684bbb] mm: migrate: check movability of hugepage in unmap_and_move_huge_page() running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/net/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:83467efbdb7948146581a56cbd683a22a0684bbb:bisect-net 2013-09-24-16:46:40 83467efbdb7948146581a56cbd683a22a0684bbb compiling 322 real 2429 user 204 sys 817.27% cpu i386-randconfig-r0-0923 2013-09-24-16:52:14 detecting boot state 3.11.0-09163-g83467ef.. 1. 3 7 9 12 14 21 22. 28 32 36 39 40 41 42 44 45. 46... 49 50. 54. 55. 59 62. 63 66 67 74.. 80 84 85 86 88 89 97 102 103 107 109 111. 114.. 115 117. 119 122.... 126 129 131 132 134 141 145 147 156 164 170 174 179 189 194 201 203 212 214 219. 222 229 235 240 243 244 246 248 251.. 254 257 258 259. 260 261 262 264 267 271 272 274. 276 277. 283 284. 285 287. 288 289 290.. 293 294 296 299. 303. 304... 305 307.... 308 309 310. 311 313. 317 322 329 334 337 339 341 342 347. 348.... 349 351 354 357. 359 360. 361. 362 365 367 370 378 384 387 392 397 404 411 416 419 421. 426. 429 431 432 433 435. 436 437. 441. 443.. 444 449 450 452 453 461 467 475 480 488 498 503 504 507 511 517 521 524 526. 528 531 534 538 542 543 544 546 548 550 551 552 555 557. 558.............................................................. 559.............................................................................................................................................................................................................................................................................................................add_to_run_queue 26 ..... 560. 561 562..................................... 563....... 565... 566.. 567.......... 569. 571 572.... 573 574..... 575...... 576. 577 579 581.............................................................................................................................................................................................................................................................................................................add_to_run_queue 4 ....................... 583. 585 SUCCESS Bisecting: 42 revisions left to test after this (roughly 6 steps) [2bff24a3707093c435ab3241c47dcdb5f16e432b] memcg: fix multiple large threshold notifications running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/net/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:2bff24a3707093c435ab3241c47dcdb5f16e432b:bisect-net 2013-09-25-01:29:55 2bff24a3707093c435ab3241c47dcdb5f16e432b compiling 632 real 2506 user 198 sys 427.49% cpu i386-randconfig-r0-0923 2013-09-25-01:45:41 detecting boot state 3.11.0-09207-g2bff24a..... 1. 2 3.. 4... 7 10 11 12 15. 18.. 19 20 24 30 38 52 54 63 67 71... 73 76 77.. 129 148 TEST FAILURE Increasing repeat count from 585 to 1170 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 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-r0-0923/linux-devel:devel-roam-i386-201309231807:2bff24a3707093c435ab3241c47dcdb5f16e432b:bisect-net/.vmlinuz-2bff24a3707093c435ab3241c47dcdb5f16e432b-20130925014504-65-ant branch=linux-devel/devel-roam-i386-201309231807 BOOT_IMAGE=/kernel/i386-randconfig-r0-0923/2bff24a3707093c435ab3241c47dcdb5f16e432b/vmlinuz-3.11.0-09207-g2bff24a noapic nolapic nohz=off Early hang kernel: vmlinuz-3.11.0-09207-g2bff24a 3.11.0-09207-g2bff24a #256 /kernel/i386-randconfig-r0-0923/2bff24a3707093c435ab3241c47dcdb5f16e432b/dmesg-quantal-lkp-tt02-23:20130924162733:3.11.0-09207-g2bff24a:256 Bisecting: 21 revisions left to test after this (roughly 5 steps) [1ecfd533f4c528b0b4cc5bc115c4c47f0b5e4828] mm/mremap.c: call pud_free() after fail calling pmd_alloc() running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/net/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:1ecfd533f4c528b0b4cc5bc115c4c47f0b5e4828:bisect-net 2013-09-25-02:07:51 1ecfd533f4c528b0b4cc5bc115c4c47f0b5e4828 compiling 974 real 2492 user 197 sys 276.13% cpu i386-randconfig-r0-0923 2013-09-25-02:24:34 detecting boot state 3.11.0-09185-g1ecfd53.. 1. 4 5 7 16 18 19 20. 26 35 37 46 52 56 64 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 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-r0-0923/linux-devel:devel-roam-i386-201309231807:1ecfd533f4c528b0b4cc5bc115c4c47f0b5e4828:bisect-net/.vmlinuz-1ecfd533f4c528b0b4cc5bc115c4c47f0b5e4828-20130925022424-725-ant branch=linux-devel/devel-roam-i386-201309231807 BOOT_IMAGE=/kernel/i386-randconfig-r0-0923/1ecfd533f4c528b0b4cc5bc115c4c47f0b5e4828/vmlinuz-3.11.0-09185-g1ecfd53 noapic nolapic nohz=off Early hang kernel: vmlinuz-3.11.0-09185-g1ecfd53 3.11.0-09185-g1ecfd53 #257 /kernel/i386-randconfig-r0-0923/1ecfd533f4c528b0b4cc5bc115c4c47f0b5e4828/dmesg-quantal-xps-4:20130925023344:3.11.0-09185-g1ecfd53:257 Bisecting: 10 revisions left to test after this (roughly 4 steps) [0ec3b74c7f5599c8a4d2b33d430a5470af26ebf6] mm: putback_lru_page: remove unnecessary call to page_lru_base_type() running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/net/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:0ec3b74c7f5599c8a4d2b33d430a5470af26ebf6:bisect-net 2013-09-25-02:34:16 0ec3b74c7f5599c8a4d2b33d430a5470af26ebf6 compiling 694 real 2478 user 195 sys 385.19% cpu i386-randconfig-r0-0923 2013-09-25-02:50:24 detecting boot state 3.11.0-09174-g0ec3b74 3 4 8 12 25 30 43 48 55 61. 63. 65.. 75 83 86 91 93 95 97. 108 119 130 138 140..... 142 143 157 165 170 171. 172.. 179 186 198 202 212 225 235 240. 243 245 253 256. 265 270 274 278 279 280 281 284. 285 286.. 287 288 289 291... 297 300 301 302 303. 306 307 309 312.. 313 314 315............... 316.... 317............ 318 319... 320. 321.. 322.. 325.. 327...... 328.... 329......... 330 334 335 338... 340 345. 346 347. 349 350. 352 353........ 355 356...... 359 362..... 364. 365 366.... 367 368. 369. 370. 372. 374 375.. 378.... 382 383.... 386 387 388.. 389. 390 393 394.. 395 396 397. 398. 399. 400. 401. 402 403.... 404.... 405........ 406 408. 410. 411 414.. 415........ 416. 418. 419. 420.. 423 424. 425 428 436 446 450. 452 453. 454 455 456 457 459 460 462.. 464 470 474 479 480.. 483 488 495 502 511 514 515 516 518 520 521 525 528 540 545 550 557 571 577 588 595 605 610 626 631 632 640 646 656 661 662 668 671 674 682 684 692 697 703 708 711 721 733 742 746. 750 755.. 756...... 765 779 792 799 804.... 805 813 844 879 893. 896 901 1015 1030 1059 1073 1077 1083 1092 1095 1102 1107.. 1108... 1111 1112............................................................................................................................................................................................................................... 1113.............................................................................................................................................................................................................................................................................................................add_to_run_queue 57 .. 1114...... 1116. 1117 1119 1120 1121. 1122. 1123. 1124... 1125... 1126.. 1127. 1128.. 1130.. 1131. 1135 1136 1138 1139 1140. 1141. 1143. 1144... 1147 1149 1150 1151 1153 1158 1159. 1161 1162.................................................................................................................................................................................................... 1163 1164.. 1166 1167 1168 1169 1170 SUCCESS Bisecting: 5 revisions left to test after this (roughly 3 steps) [5b40998ae35cf64561868370e6c9f3d3e94b6bf7] mm: munlock: remove redundant get_page/put_page pair on the fast path running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/net/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:5b40998ae35cf64561868370e6c9f3d3e94b6bf7:bisect-net 2013-09-25-13:10:48 5b40998ae35cf64561868370e6c9f3d3e94b6bf7 compiling 174 real 78 user 14 sys 53.13% cpu i386-randconfig-r0-0923 2013-09-25-13:14:11 detecting boot state 3.11.0-09179-g5b40998... 1 2 5 10 15 24 31 34 52 60 72 89 110 115 128 142 155 168 194 198 211 228 247 265 289 306 317 344 356 369 388 400 428 448 464 477 485 496 524 531 535 536 537.... 538. 539. 540. 542 545. 546 547. 548. 551. 556 558 562 564 566 569 574 582 597 609 612 623 638 645 658 673 683 706 722 728 755 778 796 815 830 838 862. 869 883 890 897. 906 920 921.. 922. 1010 1040 1056 1071 1086 1105 1106 1120.. 1122.. 1123. 1124.............................................................................................................................................................................................................................................................................................................add_to_run_queue 46 ...... 1125 1152 1156 1165 1170 SUCCESS Bisecting: 2 revisions left to test after this (roughly 2 steps) [187320932dcece9c4b93f38f56d1f888bd5c325f] mm/sparse: introduce alloc_usemap_and_memmap running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/net/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:187320932dcece9c4b93f38f56d1f888bd5c325f:bisect-net 2013-09-25-16:52:30 187320932dcece9c4b93f38f56d1f888bd5c325f compiling 376 real 2443 user 206 sys 703.70% cpu i386-randconfig-r0-0923 2013-09-25-17:00:52 detecting boot state 3.11.0-09182-g1873209..................... TEST FAILURE [ 85.475479] init: hwclock-save main process (3554) terminated with status 70 [ 85.477642] init: plymouth-upstart-bridge main process (3555) terminated with status 1 [ 94.691086] BUG: Bad page map in process killall5 pte:98d641e5 pmd:0f22c067 [ 94.692674] addr:bfc00000 vm_flags:00100173 anon_vma:cf7017b0 mapping: (null) index:bffe2 [ 94.694670] CPU: 0 PID: 3580 Comm: killall5 Not tainted 3.11.0-09182-g1873209 #260 [ 94.696540] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 94.697868] 00000000 00000000 cf1b7e34 c1d75f0c 00000000 cf1b7e54 c10e69cd 000bffe2 [ 94.700689] 00000000 bfc00000 00000001 00098d64 98d641e5 cf1b7e74 c10e745a 00000000 [ 94.703463] bfc00000 cf1dcb30 bfc00000 cf76d000 cf1dcb30 cf1b7ee0 c10eb3bf ce7383a0 [ 94.706241] Call Trace: [ 94.707040] [] dump_stack+0x4b/0x66 [ 94.708168] [] print_bad_pte+0x14b/0x162 [ 94.709348] [] vm_normal_page+0x67/0x9b [ 94.710531] [] munlock_vma_pages_range+0xf9/0x176 [ 94.711850] [] exit_mmap+0x86/0xf7 [ 94.712949] [] ? local_clock+0x27/0x33 [ 94.714103] [] ? __might_sleep+0x38/0xdc [ 94.715286] [] mmput+0x6a/0xcb [ 94.716318] [] do_exit+0x362/0x8be [ 94.717415] [] ? hrtimer_debug_hint+0xd/0xd [ 94.718642] [] do_group_exit+0x51/0x9e [ 94.719784] [] SyS_exit_group+0x16/0x16 [ 94.720977] [] sysenter_do_call+0x12/0x33 [ 94.722169] Disabling lock debugging due to kernel taint [ 95.057147] Unregister pv shared memory for cpu 1 /kernel/i386-randconfig-r0-0923/187320932dcece9c4b93f38f56d1f888bd5c325f/dmesg-quantal-bay-4:20130925171055:3.11.0-09182-g1873209:260 Bisecting: 0 revisions left to test after this (roughly 1 step) [6e543d5780e36ff5ee56c44d7e2e30db3457a7ed] mm: vmscan: fix do_try_to_free_pages() livelock running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/net/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:6e543d5780e36ff5ee56c44d7e2e30db3457a7ed:bisect-net 2013-09-25-17:11:28 6e543d5780e36ff5ee56c44d7e2e30db3457a7ed compiling 70 real 78 user 12 sys 129.09% cpu i386-randconfig-r0-0923 2013-09-25-17:13:23 detecting boot state 3.11.0-09181-g6e543d5....................... 1..... 2. TEST FAILURE [ 90.639863] init: tty6 main process (3519) killed by TERM signal [ 90.644211] init: hwclock-save main process (3546) terminated with status 70 [ 100.490361] BUG: Bad page map in process killall5 pte:07200720 pmd:0f6e8067 [ 100.492688] addr:09400000 vm_flags:00100073 anon_vma:cee0a890 mapping: (null) index:9400 [ 100.495513] CPU: 0 PID: 3572 Comm: killall5 Not tainted 3.11.0-09181-g6e543d5 #261 [ 100.498238] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 100.500255] 00000000 00000000 cee6fe34 c1d75f0c 00000000 cee6fe54 c10e69cd 00009400 [ 100.504252] 00000000 09400000 00000000 00007200 07200720 cee6fe74 c10e745a 00000000 [ 100.508266] 09400000 cedf6120 09400000 cee93000 cedf6120 cee6fee0 c10eb3bf ce58e0a0 [ 100.512412] Call Trace: [ 100.513509] [] dump_stack+0x4b/0x66 [ 100.515102] [] print_bad_pte+0x14b/0x162 [ 100.516809] [] vm_normal_page+0x67/0x9b [ 100.518454] [] munlock_vma_pages_range+0xf9/0x176 [ 100.520426] [] ? sched_clock_cpu+0x182/0x18a [ 100.522215] [] exit_mmap+0x86/0xf7 [ 100.523783] [] ? local_clock+0x27/0x33 [ 100.525408] [] ? __might_sleep+0x38/0xdc [ 100.527110] [] mmput+0x6a/0xcb [ 100.528596] [] do_exit+0x362/0x8be [ 100.530240] [] ? hrtimer_debug_hint+0xd/0xd [ 100.531993] [] do_group_exit+0x51/0x9e [ 100.533651] [] SyS_exit_group+0x16/0x16 [ 100.535299] [] sysenter_do_call+0x12/0x33 [ 100.537027] Disabling lock debugging due to kernel taint [ 101.282416] Unregister pv shared memory for cpu 0 /kernel/i386-randconfig-r0-0923/6e543d5780e36ff5ee56c44d7e2e30db3457a7ed/dmesg-quantal-lkp-tt02-5:20130925074849:3.11.0-09181-g6e543d5:261 Bisecting: 0 revisions left to test after this (roughly 0 steps) [7a8010cd36273ff5f6fea5201ef9232f30cebbd9] mm: munlock: manual pte walk in fast path instead of follow_page_mask() running /c/kernel-tests/bisect-test-boot-failure.sh /home/wfg/net/obj-bisect ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:7a8010cd36273ff5f6fea5201ef9232f30cebbd9:bisect-net 2013-09-25-17:29:13 7a8010cd36273ff5f6fea5201ef9232f30cebbd9 compiling 1511 real 2518 user 192 sys 179.30% cpu i386-randconfig-r0-0923 2013-09-25-17:56:54 detecting boot state 3.11.0-09180-g7a8010c.. 2 5 14 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-r0-0923/linux-devel:devel-roam-i386-201309231807:7a8010cd36273ff5f6fea5201ef9232f30cebbd9:bisect-net/.vmlinuz-7a8010cd36273ff5f6fea5201ef9232f30cebbd9-20130925175646-134-ant branch=linux-devel/devel-roam-i386-201309231807 BOOT_IMAGE=/kernel/i386-randconfig-r0-0923/7a8010cd36273ff5f6fea5201ef9232f30cebbd9/vmlinuz-3.11.0-09180-g7a8010c noapic nolapic nohz=off Early hang kernel: vmlinuz-3.11.0-09180-g7a8010c 3.11.0-09180-g7a8010c #262 /kernel/i386-randconfig-r0-0923/7a8010cd36273ff5f6fea5201ef9232f30cebbd9/dmesg-quantal-stoakley-5:20130925175904:3.11.0-09180-g7a8010c:262 7a8010cd36273ff5f6fea5201ef9232f30cebbd9 is the first bad commit commit 7a8010cd36273ff5f6fea5201ef9232f30cebbd9 Author: Vlastimil Babka Date: Wed Sep 11 14:22:35 2013 -0700 mm: munlock: manual pte walk in fast path instead of follow_page_mask() Currently munlock_vma_pages_range() calls follow_page_mask() to obtain each individual struct page. This entails repeated full page table translations and page table lock taken for each page separately. This patch avoids the costly follow_page_mask() where possible, by iterating over ptes within single pmd under single page table lock. The first pte is obtained by get_locked_pte() for non-THP page acquired by the initial follow_page_mask(). The rest of the on-stack pagevec for munlock is filled up using pte_walk as long as pte_present() and vm_normal_page() are sufficient to obtain the struct page. After this patch, a 14% speedup was measured for munlocking a 56GB large memory area with THP disabled. Signed-off-by: Vlastimil Babka Cc: Jörn Engel Cc: Mel Gorman Cc: Michel Lespinasse Cc: Hugh Dickins Cc: Rik van Riel Cc: Johannes Weiner Cc: Michal Hocko Cc: Vlastimil Babka Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds :040000 040000 1a4a0261449f59329e197a0db6ef4d302d31cba8 9d60d44fa4168be4eb77e866dd27cd6d6f259879 M include :040000 040000 e8e7523deaff565d041ce45356a444debb2c6c53 951862cab689a62cd9b880bf1692801070d736f6 M mm bisect run success ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:5b40998ae35cf64561868370e6c9f3d3e94b6bf7:bisect-net 2013-09-25-17:59:33 5b40998ae35cf64561868370e6c9f3d3e94b6bf7 reuse /kernel/i386-randconfig-r0-0923/5b40998ae35cf64561868370e6c9f3d3e94b6bf7/vmlinuz-3.11.0-09179-g5b40998 2013-09-25-17:59:38 detecting boot state ........ 2 3 5 6 10. 11 12 17 23 24 32 36 38 44. 45 47 50 60 62 63 64 67 68 70. 71 72 75 77 81. 85 88. 89 99 105. 111 113. 115.. 119 122 124 125 127 128 129 131 132 133 139.. 155 158 162 172 174 181 186 194 198 207 209 212. 213 216 221 223. 227 230 231 235 239 250 251 254 256.. 257 261 262. 266 270 272 276. 277. 284 285 286. 289 296 299.... 311 315. 317 318 320 324 325. 327 330 334 337. 338. 339 347 351 360 363. 366 368 374 388 389 399 402 407 408 410 411 416. 420 421.. 426 430 432 434 437 439.. 447 450 452 453 463. 469 473 487 490 497 498 501 507 512 517 518 520 526 531 538 547 549 558 561 563 578 580 590 597 598 600 602 604 619 620 622 625 626 629 635 640 649 651 660 663.. 664 665 672 674. 676 679........ 704 747 750 752 761 762... 767 789 805 806 811 817 825 832 837 842 847 851 852 872 892 896 903 928 943 951 971 973 983 987 992 995 998 999 1013 1021 1022. 1027 1041 1064 1070 1077 1088 1110. 1116 1138 1141 1142 1144 1164 1168. 1195 1223 1249 1260 1286 1324 1374. 1418 1421 1450 1493 1507 1542 1557 1560 1568 1593 1605 1628 1647 1670 1686 1710 1735 1755 1776 1798 1817 1833 1839 1874 1886 1903 1912 1916 1928 1933 1939 1949 1962 1969 1971 1973 1979 1992 1998 2022 2037 2044 2052 2056 2091 2095 2103 2107 2115 2120 2121 2123 2126 2149 2158. 2164 2171 2187 2202 2232 2239 2245 2249 2250 2257 2271 2279 2283 2287 2292 2293... 2295 2296 2302 2304 2307 2319 2323 2324 2326..... 2327....... 2398 2504 2535 2541 2551 2575 2587 2596 2603 2623 2646 2654 2657 2662. 2710 2724 2728 2732 2748 2769 2781 2789 2790 2791 2794 2801 2810 2814... 2818 2829 2836 2847 2848 2866 2869 2873. 2876 2901 2903 2918 2932 2933 2935 2944 2957 2966 2968 2980 2987 2993 2994 2999 3034 3083 3111 3130 3144 3153 3160 3171 3186 3216 3225 3235 3251 3272 3277 3286 3329 3330 3340 3362 3389 3436 3441 3457 3468 3470. 3471 3477 3497 3501 3508............... 3510 SUCCESS ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:5fbc0a6263a147cde905affbfb6622c26684344f:bisect-net 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-r0-0923/linux-devel:devel-roam-i386-201309231807:5fbc0a6263a147cde905affbfb6622c26684344f:bisect-net/.vmlinuz-5fbc0a6263a147cde905affbfb6622c26684344f-20130923182648-11-ant branch=linux-devel/devel-roam-i386-201309231807 BOOT_IMAGE=/kernel/i386-randconfig-r0-0923/5fbc0a6263a147cde905affbfb6622c26684344f/vmlinuz-3.12.0-rc1-00010-g5fbc0a6 noapic nolapic nohz=off Early hang kernel: vmlinuz-3.12.0-rc1-00010-g5fbc0a6 3.12.0-rc1-00010-g5fbc0a6 #24 /kernel/i386-randconfig-r0-0923/5fbc0a6263a147cde905affbfb6622c26684344f/dmesg-quantal-lkp-st01-7:20130923183916:3.12.0-rc1-00010-g5fbc0a6:24 /kernel/i386-randconfig-r0-0923/5fbc0a6263a147cde905affbfb6622c26684344f/dmesg-quantal-lkp-tt02-11:20130923084547:3.12.0-rc1-00010-g5fbc0a6:24 [detached HEAD 87e3703] Revert "mm: munlock: manual pte walk in fast path instead of follow_page_mask()" 2 files changed, 37 insertions(+), 85 deletions(-) ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:87e37036dcf96eb73a8627524be8b722bd1ac526:bisect-net 2013-09-25-22:10:19 87e37036dcf96eb73a8627524be8b722bd1ac526 compiling 2013-09-25-22:23:55 detecting boot state 3.12.0-rc1-00011-g87e3703......... 11 28 31 35 37 46 54 66.. 67 126 155. 175 204 206 216 235 245 250 260 262. 263 273 290 320 350 352 354 357 361 367 368 374 380 390 402 407 411 415 421 430 432 434 442 448 452. 478 488 502 515 520 527 540 548 552 563 566 582 620.. 637.... 644 647 652 653.... 654 668 673 679.. 680 682. 685 705 718 719. 720. 825 840 841 849 856 857 908 931 938. 948 967 982 989 990 1000 1003 1015 1017 1018 1031. 1042 1049 1053 1063 1078 1083 1088 1090 1094 1107 1110 1117 1131 1149.. 1157 1160 1161 1174 1201 1216 1227 1232 1239 1254 1267 1296 1306 1318 1325 1329 1352 1357 1360 1367 1378 1406 1434 1449 1500 1538 1558 1584 1599 1630 1654 1701 1721 1742 1766 1796 1810 1833 1880 1914 1923 1927 1935 1951 1954 1966 1976 1982 2028 2066 2084 2094 2096 2110 2113 2133 2139 2158 2169 2177 2189 2201 2206 2210 2215 2228 2254 2270 2276 2287 2295 2298 2300 2314 2319 2324 2325.... 2331 2346 2357 2364 2368 2371 2372 2386 2422 2426 2431 2434 2467 2471.. 2490 2502 2517 2519 2522 2532 2546 2553 2556... 2557 2571 2640.. 2653 2673 2684 2696 2705 2708 2709. 2711 2717 2726 2733 2739 2740.. 2742 2760 2765. 2766 2767 2780 2791 2794 2799 2818 2823 2828 2843 2847 2851 2855 2862 2864 2878 2880 2884 2893 2913 2926 2953 2958 2967 2975 2983 2995 3027 3033 3040 3042 3051 3053 3057 3060 3075 3086 3092 3116. 3124 3130 3132....... 3133.. 3134... 3144 3146 3147 3148 3151. 3153. 3178 3179 3187 3189 3202 3219 3226. 3231 3240 3249 3256 3265 3277 3294 3312 3330 3342 3350 3360 3368 3371 3376 3389 3396. 3397 3404 3418 3426 3441 3466 3476 3482 3491 3499... 3500. 3501. 3502................................. 3503.............................................................................................................................................................................................................................................................................................................add_to_run_queue 7 ... 3504. 3505 3506 3510 SUCCESS ========= upstream ========= Fetching linus ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:22356f447ceb8d97a4885792e7d9e4607f712e1b:bisect-net 2013-09-26-04:31:46 22356f447ceb8d97a4885792e7d9e4607f712e1b reuse /kernel/i386-randconfig-r0-0923/22356f447ceb8d97a4885792e7d9e4607f712e1b/vmlinuz-3.12.0-rc2-00033-g22356f4 2013-09-26-04:31:51 detecting boot state . 1.. 2 3 10 12 13..... 15 19 24 48 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-r0-0923/linux-devel:devel-roam-i386-201309231807:22356f447ceb8d97a4885792e7d9e4607f712e1b:bisect-net/.vmlinuz-22356f447ceb8d97a4885792e7d9e4607f712e1b-20130926043146-932-ant branch=linux-devel/devel-roam-i386-201309231807 BOOT_IMAGE=/kernel/i386-randconfig-r0-0923/22356f447ceb8d97a4885792e7d9e4607f712e1b/vmlinuz-3.12.0-rc2-00033-g22356f4 noapic nolapic nohz=off Early hang kernel: vmlinuz-3.12.0-rc2-00033-g22356f4 3.12.0-rc2-00033-g22356f4 #8 /kernel/i386-randconfig-r0-0923/22356f447ceb8d97a4885792e7d9e4607f712e1b/dmesg-quantal-lkp-st01-6:20130926044007:3.12.0-rc2-00033-g22356f4:8 ========= linux-next ========= Fetching next ls -a /kernel-tests/run-queue/kvm/i386-randconfig-r0-0923/linux-devel:devel-roam-i386-201309231807:050f4da86e9bdbcc9e11789e0f291aafa57b8a20:bisect-net 2013-09-26-04:41:09 050f4da86e9bdbcc9e11789e0f291aafa57b8a20 reuse /kernel/i386-randconfig-r0-0923/050f4da86e9bdbcc9e11789e0f291aafa57b8a20/vmlinuz-3.12.0-rc2-next-20130925-02066-g050f4da 2013-09-26-04:41:15 detecting boot state .. 1 3 5 6 19 28 50 60 73 77 84 89 92 95 97 100 102 103 104. 107. 109 111 113. 133 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-r0-0923/linux-devel:devel-roam-i386-201309231807:050f4da86e9bdbcc9e11789e0f291aafa57b8a20:bisect-net/.vmlinuz-050f4da86e9bdbcc9e11789e0f291aafa57b8a20-20130926044109-3110-ant branch=linux-devel/devel-roam-i386-201309231807 BOOT_IMAGE=/kernel/i386-randconfig-r0-0923/050f4da86e9bdbcc9e11789e0f291aafa57b8a20/vmlinuz-3.12.0-rc2-next-20130925-02066-g050f4da noapic nolapic nohz=off Early hang kernel: vmlinuz-3.12.0-rc2-next-20130925-02066-g050f4da 3.12.0-rc2-next-20130925-02066-g050f4da #12 /kernel/i386-randconfig-r0-0923/050f4da86e9bdbcc9e11789e0f291aafa57b8a20/dmesg-quantal-lkp-st01-7:20130926045516:3.12.0-rc2-next-20130925-02066-g050f4da:12