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Date: Wed, 26 Jan 2011 03:45:55 -0500 (EST)
From: CAI Qian <caiqian@redhat.com>
Message-ID: <200549051.160023.1296031555533.JavaMail.root@zmail06.collab.prod.int.phx2.redhat.com>
In-Reply-To: <201101260021.p0Q0LxsS016458@imap1.linux-foundation.org>
Subject: Re: mmotm 2011-01-25-15-47 uploaded
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Sender: owner-linux-mm@kvack.org
To: Andrea Arcangeli <aarcange@redhat.com>
Cc: linux-mm@kvack.org
List-ID: <linux-mm.kvack.org>

Andrea,

khugepaged hung during swapping there.

INFO: task khugepaged:276 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
khugepaged      D ffff880fa0fd4610     0   276      2 0x00000000
 ffff880fa07cfcc0 0000000000000046 ffff88201ffdac00 0000000000000000
 0000000000014d40 ffff880fa0fd4080 ffff880fa0fd4610 ffff880fa07cffd8
 ffff880fa0fd4618 0000000000014d40 ffff880fa07ce010 0000000000014d40
Call Trace:
 [<ffffffff814afeb5>] rwsem_down_failed_common+0xb5/0x140
 [<ffffffff814aff53>] rwsem_down_write_failed+0x13/0x20
 [<ffffffff812301a3>] call_rwsem_down_write_failed+0x13/0x20
 [<ffffffff814af4d2>] ? down_write+0x32/0x40
 [<ffffffff81146b4d>] khugepaged+0x8ad/0x1300
 [<ffffffff8100a6f0>] ? __switch_to+0xd0/0x320
 [<ffffffff811462a0>] ? khugepaged+0x0/0x1300
 [<ffffffff810830f0>] ? autoremove_wake_function+0x0/0x40
 [<ffffffff811462a0>] ? khugepaged+0x0/0x1300
 [<ffffffff81082a56>] kthread+0x96/0xa0
 [<ffffffff8100cdc4>] kernel_thread_helper+0x4/0x10
 [<ffffffff810829c0>] ? kthread+0x0/0xa0
 [<ffffffff8100cdc0>] ? kernel_thread_helper+0x0/0x10
INFO: task pgrep:6039 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
pgrep           D ffff887f606f1ab0     0  6039   6038 0x00000080
 ffff8821e39c1ce0 0000000000000082 0000000000000246 0000000000000000
 0000000000014d40 ffff887f606f1520 ffff887f606f1ab0 ffff8821e39c1fd8
 ffff887f606f1ab8 0000000000014d40 ffff8821e39c0010 0000000000014d40
Call Trace:
 [<ffffffff814afeb5>] rwsem_down_failed_common+0xb5/0x140
 [<ffffffff814aff75>] rwsem_down_read_failed+0x15/0x17
 [<ffffffff81230174>] call_rwsem_down_read_failed+0x14/0x30
 [<ffffffff814af504>] ? down_read+0x24/0x30
 [<ffffffff8111f4dc>] access_process_vm+0x4c/0x200
 [<ffffffff8113f3fe>] ? fallback_alloc+0x14e/0x270
 [<ffffffff811afa4d>] proc_pid_cmdline+0x6d/0x120
 [<ffffffff81137eba>] ? alloc_pages_current+0x9a/0x100
 [<ffffffff811b037d>] proc_info_read+0xad/0xf0
 [<ffffffff81154315>] vfs_read+0xc5/0x190
 [<ffffffff811544e1>] sys_read+0x51/0x90
 [<ffffffff8100bf82>] system_call_fastpath+0x16/0x1b

----- Original Message -----
> The mm-of-the-moment snapshot 2011-01-25-15-47 has been uploaded to
> 
> http://userweb.kernel.org/~akpm/mmotm/
> 
> and will soon be available at
> 
> git://zen-kernel.org/kernel/mmotm.git
> 
> It contains the following patches against 2.6.38-rc2:
> 
> origin.patch
> thp-fix-paravirt-x86-32bit-nopae.patch
> mm-pgtable-genericc-fix-config_swap=n-build.patch
> leds-leds-pwm-return-proper-error-if-pwm_request-failed.patch
> langwell_gpio-modify-eoi-handling-following-change-of-kernel-irq-subsystem.patch
> parport-make-lockdep-happy-with-waitlist_lock.patch
> pps-ktimer-remove-noisy-message.patch
> pps-claim-parallel-port-exclusively.patch
> mm-fix-deferred-congestion-timeout-if-preferred-zone-is-not-allowed.patch
> mm-clear-pages_scanned-only-if-draining-a-pcp-adds-pages-to-the-buddy-allocator.patch
> mm-memcontrolc-fix-uninitialized-variable-use-in-mem_cgroup_move_parent.patch
> mm-compaction-dont-depend-on-hugetlb_page.patch
> mm-migration-clarify-migrate_pages-comment.patch
> memcg-fix-account-leak-at-failure-of-memsw-acconting.patch
> memcg-bugfix-check-mem_cgroup_disabled-at-split-fixup.patch
> memcg-fix-race-at-move_parent-around-compound_order.patch
> atmel_tc-tcb_clksrc-fix-init-sequence.patch
> radix_tree-radix_tree_gang_lookup_tag_slot-may-not-return-forever.patch
> squashfs-fix-use-of-uninitialised-variable-in-zlib-xz-decompressors.patch
> change-acquire-release_console_sem-to-console_lock-unlock.patch
> mm-numa-aware-alloc_task_struct_node.patch
> mm-numa-aware-alloc_thread_info_node.patch
> kthread-numa-aware-kthread_create_on_cpu.patch
> kthread-use-kthread_create_on_cpu.patch
> linux-next.patch
> linux-next-git-rejects.patch
> next-remove-localversion.patch
> i-need-old-gcc.patch
> arch-alpha-kernel-systblss-remove-debug-check.patch
> backlight-new-driver-for-the-adp8870-backlight-devices.patch
> mm-vmap-area-cache.patch
> loop-queue_lock-null-pointer-derefence-in-blk_throtl_exit-v3.patch
> drivers-media-video-tlg2300-pd-videoc-fix-double-mutex_unlock-in-pd_vidioc_s_fmt.patch
> scsi-include-linux-scatterlisth-to-pick-up-arch_has_sg_chain.patch
> acerhdf-add-support-for-aspire-1410-bios-v13314.patch
> x86-numa-add-error-handling-for-bad-cpu-to-node-mappings.patch
> msm-timer-migrate-to-timer-based-__delay.patch
> audit-always-follow-va_copy-with-va_end.patch
> fs-btrfs-inodec-eliminate-memory-leak.patch
> btrfs-dont-dereference-extent_mapping-if-null.patch
> cpufreq-fix-ondemand-governor-powersave_bias-execution-time-misuse.patch
> drivers-dma-ipu-ipu_irqc-irq_data-conversion.patch
> debugfs-remove-module_exit.patch
> drivers-gpu-drm-radeon-atomc-fix-warning.patch
> cyber2000fb-avoid-palette-corruption-at-higher-clocks.patch
> leds-convert-bd2802-driver-to-dev_pm_ops.patch
> leds-convert-bd2802-driver-to-dev_pm_ops-fix.patch
> leds-add-driver-for-lm3530-als.patch
> leds-add-driver-for-lm3530-als-update.patch
> leds-route-kbd-leds-through-the-generic-leds-layer.patch
> mips-enable-arch_dma_addr_t_64bit-with-highmem-64bit_phys_addr-64bit.patch
> backlight-add-backlight-type.patch
> backlight-add-backlight-type-fix.patch
> backlight-add-backlight-type-fix-fix.patch
> i915-add-native-backlight-control.patch
> radeon-expose-backlight-class-device-for-legacy-lvds-encoder.patch
> radeon-expose-backlight-class-device-for-legacy-lvds-encoder-update.patch
> nouveau-change-the-backlight-parent-device-to-the-connector-not-the-pci-dev.patch
> acpi-tie-acpi-backlight-devices-to-pci-devices-if-possible.patch
> mbp_nvidia_bl-remove-dmi-dependency.patch
> mbp_nvidia_bl-check-that-the-backlight-control-functions.patch
> mbp_nvidia_bl-rename-to-apple_bl.patch
> btusb-patch-add_apple_macbookpro62.patch
> tty-serial-fix-apbuart-build.patch
> drivers-message-fusion-mptsasc-fix-warning.patch
> scsi-fix-a-header-to-include-linux-typesh.patch
> drivers-block-makefile-replace-the-use-of-module-objs-with-module-y.patch
> drivers-block-aoe-makefile-replace-the-use-of-module-objs-with-module-y.patch
> cciss-make-cciss_revalidate-not-loop-through-ciss_max_luns-volumes-unnecessarily.patch
> loop-queue_lock-null-pointer-derefence-in-blk_throtl_exit.patch
> drbd-fix-warning.patch
> usb-yurex-recognize-generalkeys-wireless-presenter-as-generic-hid.patch
> vfs-remove-a-warning-on-open_fmode.patch
> vfs-add-__fmode_exec.patch
> fs-make-block-fiemap-mapping-length-at-least-blocksize-long.patch
> n_hdlc-fix-read-and-write-locking.patch
> mm.patch
> oom-suppress-nodes-that-are-not-allowed-from-meminfo-on-oom-kill.patch
> oom-suppress-show_mem-for-many-nodes-in-irq-context-on-page-alloc-failure.patch
> oom-suppress-nodes-that-are-not-allowed-from-meminfo-on-page-alloc-failure.patch
> mm-notifier_from_errno-cleanup.patch
> mm-add-replace_page_cache_page-function.patch
> frv-duplicate-output_buffer-of-e03.patch
> frv-duplicate-output_buffer-of-e03-checkpatch-fixes.patch
> hpet-factor-timer-allocate-from-open.patch
> arch-alpha-include-asm-ioh-s-extern-inline-static-inline.patch
> uml-kernels-on-i386x86_64-produce-bad-coredumps.patch
> add-the-common-dma_addr_t-typedef-to-include-linux-typesh.patch
> bh1780gli-convert-to-dev-pm-ops.patch
> drivers-misc-bmp085c-free-initmem-memory.patch
> smp-move-smp-setup-functions-to-kernel-smpc.patch
> llist-add-kconfig-option-arch_have_nmi_safe_cmpxchg.patch
> llist-lib-add-lock-less-null-terminated-single-list.patch
> llist-irq_work-use-llist-in-irq_work.patch
> llist-net-rds-replace-xlist-in-net-rds-xlisth-with-llist.patch
> net-convert-%p-usage-to-%pk.patch
> vsprintf-neaten-%pk-kptr_restrict-save-a-bit-of-code-space.patch
> console-allow-to-retain-boot-console-via-boot-option-keep_bootcon.patch
> console-prevent-registered-consoles-from-dumping-old-kernel-message-over-again.patch
> vfs-ignore-error-on-forced-remount.patch
> vfs-keep-list-of-mounts-for-each-superblock.patch
> vfs-protect-remounting-superblock-read-only.patch
> vfs-fs_may_remount_ro-turn-unnecessary-check-into-a-warn_on.patch
> fs-ioctlc-remove-unnecessary-variable.patch
> get_maintainerpl-add-support-to-match-arbitrary-text.patch
> sigma-firmware-loader-for-analog-devices-sigmastudio.patch
> sigma-firmware-loader-for-analog-devices-sigmastudio-v2.patch
> drivers-mmc-host-omapc-use-resource_size.patch
> drivers-mmc-host-omap_hsmmcc-use-resource_size.patch
> select-remove-unused-max_select_seconds.patch
> epoll-move-ready-event-check-into-proper-inline.patch
> epoll-fix-compiler-warning-and-optimize-the-non-blocking-path.patch
> binfmt_elf-quiet-gcc-46-set-but-not-used-warning-in-load_elf_binary.patch
> lib-hexdumpc-make-hex2bin-return-the-updated-src-address.patch
> fs-binfmt_miscc-use-kernels-hex_to_bin-method.patch
> fs-binfmt_miscc-use-kernels-hex_to_bin-method-fix.patch
> fs-binfmt_miscc-use-kernels-hex_to_bin-method-fix-fix.patch
> init-return-proper-error-code-in-do_mounts_rd.patch
> rtc-add-support-for-the-rtc-in-via-vt8500-and-compatibles.patch
> rtc-add-real-time-clock-driver-for-nvidia-tegra.patch
> jbd-remove-dependency-on-__gfp_nofail.patch
> exec_domain-establish-a-linux32-domain-on-config_compat-systems.patch
> rapidio-add-new-sysfs-attributes.patch
> rapidio-add-rapidio-documentation.patch
> fs-execc-provide-the-correct-process-pid-to-the-pipe-helper.patch
> kernel-gcov-makefile-use-proper-ccflag-flag-in-makefile.patch
> remove-dma64_addr_t.patch
> adfs-fix-e-f-dir-size-2048-crashing-kernel.patch
> adfs-improve-timestamp-precision.patch
> adfs-add-hexadecimal-filetype-suffix-option.patch
> adfs-remove-the-big-kernel-lock.patch
> scatterlist-new-helper-functions.patch
> memstick-add-driver-for-ricoh-r5c592-card-reader.patch
> memstick-add-support-for-legacy-memorysticks.patch
> memstick-add-support-for-legacy-memorysticks-update.patch
> memstick-add-alex-dubov-to-maintainers-of-the-memstick-core.patch
> kvm-stop-including-asm-generic-bitops-leh-directly.patch
> rds-stop-including-asm-generic-bitops-leh-directly.patch
> bitops-merge-little-and-big-endian-definisions-in-asm-generic-bitops-leh.patch
> asm-generic-rename-generic-little-endian-bitops-functions.patch
> asm-generic-change-little-endian-bitops-to-take-any-pointer-types.patch
> powerpc-introduce-little-endian-bitops.patch
> s390-introduce-little-endian-bitops.patch
> arm-introduce-little-endian-bitops.patch
> m68k-introduce-little-endian-bitops.patch
> bitops-introduce-config_generic_find_bit_le.patch
> m68knommu-introduce-little-endian-bitops.patch
> bitops-introduce-little-endian-bitops-for-most-architectures.patch
> asm-generic-use-little-endian-bitops.patch
> kvm-use-little-endian-bitops.patch
> rds-use-little-endian-bitops.patch
> ext3-use-little-endian-bitops.patch
> ext4-use-little-endian-bitops.patch
> ocfs2-use-little-endian-bitops.patch
> nilfs2-use-little-endian-bitops.patch
> reiserfs-use-little-endian-bitops.patch
> udf-use-little-endian-bitops.patch
> ufs-use-little-endian-bitops.patch
> md-use-little-endian-bitops.patch
> dm-use-little-endian-bitops.patch
> bitops-remove-ext2-non-atomic-bitops-from-asm-bitopsh.patch
> m68k-remove-inline-asm-from-minix_find_first_zero_bit.patch
> bitops-remove-minix-bitops-from-asm-bitopsh.patch
> make-sure-nobodys-leaking-resources.patch
> journal_add_journal_head-debug.patch
> releasing-resources-with-children.patch
> make-frame_pointer-default=y.patch
> mutex-subsystem-synchro-test-module.patch
> mutex-subsystem-synchro-test-module-add-missing-header-file.patch
> slab-leaks3-default-y.patch
> put_bh-debug.patch
> add-debugging-aid-for-memory-initialisation-problems.patch
> workaround-for-a-pci-restoring-bug.patch
> prio_tree-debugging-patch.patch
> single_open-seq_release-leak-diagnostics.patch
> add-a-refcount-check-in-dput.patch
> memblock-add-input-size-checking-to-memblock_find_region.patch
> memblock-add-input-size-checking-to-memblock_find_region-fix.patch
> --
> To unsubscribe, send a message with 'unsubscribe linux-mm' in
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> see: http://www.linux-mm.org/ .
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