[Bug 808509] Re: SRU: Stop kswapd consuming 100% CPU when highest zone is small
*** This bug is a duplicate of bug 793702 *** https://bugs.launchpad.net/bugs/793702 ** This bug has been marked a duplicate of bug 793702 Natty update to 2.6.38.8 stable release -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/808509 Title: SRU: Stop kswapd consuming 100% CPU when highest zone is small To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/808509/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 808509] Re: SRU: Stop kswapd consuming 100% CPU when highest zone is small
This bug was fixed in the package linux - 2.6.38-11.48 --- linux (2.6.38-11.48) natty-proposed; urgency=low [Herton R. Krzesinski] * Release Tracking Bug - LP: #818175 [ Upstream Kernel Changes ] * Revert HID: magicmouse: ignore 'ivalid report id' while switching modes - LP: #814250 linux (2.6.38-11.47) natty-proposed; urgency=low [Steve Conklin] * Release Tracking Bug - LP: #811180 [ Keng-Yu Lin ] * SAUCE: Revert: dell-laptop: Toggle the unsupported hardware killswitch - LP: #775281 [ Ming Lei ] * SAUCE: fix yama_ptracer_del lockdep warning - LP: #791019 [ Stefan Bader ] * SAUCE: Re-enable RODATA for i386 virtual - LP: #809838 [ Tim Gardner ] * [Config] Add grub-efi as a recommended bootloader for server and generic - LP: #800910 * SAUCE: rtl8192se: Force a build for a 2.6/3.0 kernel - LP: #805494 [ Upstream Kernel Changes ] * Revert bridge: Forward reserved group addresses if !STP - LP: #793702 * Fix up ABI directory * bonding: Incorrect TX queue offset, CVE-2011-1581 - LP: #792312 - CVE-2011-1581 * fs/partitions/efi.c: corrupted GUID partition tables can cause kernel oops - LP: #795418 - CVE-2011-1577 * usbnet/cdc_ncm: add missing .reset_resume hook - LP: #793892 * ath5k: Disable fast channel switching by default - LP: #767192 * mm: vmscan: correctly check if reclaimer should schedule during shrink_slab - LP: #755066 * mm: vmscan: correct use of pgdat_balanced in sleeping_prematurely - LP: #755066 * ALSA: hda - Use LPIB for ATI/AMD chipsets as default - LP: #741825 * ALSA: hda - Enable snoop bit for AMD controllers - LP: #741825 * ALSA: hda - Enable sync_write workaround for AMD generically - LP: #741825 * cpuidle: menu: fixed wrapping timers at 4.294 seconds - LP: #774947 * drm/i915: Fix gen6 (SNB) missed BLT ring interrupts. - LP: #761065 * USB: ehci: remove structure packing from ehci_def - LP: #791552 * drm/i915: disable PCH ports if needed when disabling a CRTC - LP: #791752 * kmemleak: Do not return a pointer to an object that kmemleak did not get - LP: #793702 * kmemleak: Initialise kmemleak after debug_objects_mem_init() - LP: #793702 * Fix _OSC UUID in pcc-cpufreq - LP: #793702 * CPU hotplug, re-create sysfs directory and symlinks - LP: #793702 * Fix memory leak in cpufreq_stat - LP: #793702 * net: recvmmsg: Strip MSG_WAITFORONE when calling recvmsg - LP: #793702 * ftrace: Only update the function code on write to filter files - LP: #793702 * qla2xxx: Fix hang during driver unload when vport is active. - LP: #793702 * qla2xxx: Fix virtual port failing to login after chip reset. - LP: #793702 * qla2xxx: Fix vport delete hang when logins are outstanding. - LP: #793702 * powerpc/kdump64: Don't reference freed memory as pacas - LP: #793702 * powerpc/kexec: Fix memory corruption from unallocated slaves - LP: #793702 * x86, cpufeature: Fix cpuid leaf 7 feature detection - LP: #793702 * ath9k_hw: do noise floor calibration only on required chains - LP: #793702 * ath9k_hw: fix power for the HT40 duplicate frames - LP: #793702 * ath9k_hw: fix dual band assumption for XB113 - LP: #793702 * ath9k_hw: Fix STA connection issues with AR9380 (XB113). - LP: #793702 * powerpc: Set nr_cpu_ids early and use it to free PACAs - LP: #793702 * powerpc/oprofile: Handle events that raise an exception without overflowing - LP: #793702 * iwlagn: fix iwl_is_any_associated - LP: #793702 * block: rescan partitions on invalidated devices on -ENOMEDIA too - LP: #793702 * block: move bd_set_size() above rescan_partitions() in __blkdev_get() - LP: #793702 * paride: Convert to bdops-check_events() - LP: #793702 * gdrom,viocd: Convert to bdops-check_events() - LP: #793702 * ide: Convert to bdops-check_events() - LP: #793702 * block: don't block events on excl write for non-optical devices - LP: #793702 * block: Fix discard topology stacking and reporting - LP: #793702 * block: add proper state guards to __elv_next_request - LP: #793702 * block: always allocate genhd-ev if check_events is implemented - LP: #793702 * mtd: mtdconcat: fix NAND OOB write - LP: #793702 * mtd: return badblockbits back - LP: #793702 * x86, 64-bit: Fix copy_[to/from]_user() checks for the userspace address limit - LP: #793702 * ext4: fix possible use-after-free in ext4_remove_li_request() - LP: #793702 * iwlwifi: fix bugs in change_interface - LP: #793702 * nl80211: Fix set_key regression with some drivers - LP: #793702 * mac80211: fix a few RCU issues - LP: #793702 * wire up fanotify syscalls - LP: #793702 * wire up clock_adjtime syscall - LP: #793702 * drm: Send pending vblank events before disabling vblank.
[Bug 808509] Re: SRU: Stop kswapd consuming 100% CPU when highest zone is small
This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- natty' to 'verification-done-natty'. If verification is not done by one week from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! Also would be good to have a formal SRU justification here. ** Tags added: verification-needed-natty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/808509 Title: SRU: Stop kswapd consuming 100% CPU when highest zone is small To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/808509/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 808509] Re: SRU: Stop kswapd consuming 100% CPU when highest zone is small
I've repeated the test scenario as described in comment #7 with 500 copy operations using the script (see comment #7 too) to give it nearly 4 hours of intensive file copying soak testing. Works fine, no lock- ups/hangs. Marking it as verified. ** Tags added: natty-verification-done ** Tags removed: verification-needed-natty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/808509 Title: SRU: Stop kswapd consuming 100% CPU when highest zone is small To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/808509/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 808509] Re: SRU: Stop kswapd consuming 100% CPU when highest zone is small
** Tags added: verification-done-natty ** Tags removed: natty-verification-done -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/808509 Title: SRU: Stop kswapd consuming 100% CPU when highest zone is small To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/808509/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 808509] Re: SRU: Stop kswapd consuming 100% CPU when highest zone is small
SRU Justification Impact: Sandy Bridge platforms with a small normal zone can apparently lockup when copying from a fast I/O source to a slower I/O destination, e.g., disk to USB stick. Patch Description: A number of upstream changes have made accommodation for how pages are allocated when the normal zone is exhausted. Patch: See the list of commits in https://bugs.launchpad.net/ubuntu/+source/linux/+bug/808509/comments/5 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/808509 Title: SRU: Stop kswapd consuming 100% CPU when highest zone is small To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/808509/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 808509] Re: SRU: Stop kswapd consuming 100% CPU when highest zone is small
@Tim, managed to get some overnight testing on this kernel, results are very good: Did 1000 x test cycles, each copying ~795MB of data (~7 hours of soak testing), no lock-ups on a SNB laptop with 4GB memory. Also re-ran with 500 x test cycles with 2GB memory (as this *really* exercises the bug). My test script (which contains portions of the ubiquity copying script which originally tripped this bug) is attached. Testing - run script to copy data from one ext4 partition to another. /dev/sda3, ext4, source, containing ~795MB of files from the Natty installer /dev/sda4, ext4, destination Summary: Exhaustive testing passed. ** Attachment added: Test script to exercise bug https://bugs.launchpad.net/ubuntu/+source/linux/+bug/808509/+attachment/2205312/+files/ubiquity.nousb.simple -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/808509 Title: SRU: Stop kswapd consuming 100% CPU when highest zone is small To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/808509/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 808509] Re: SRU: Stop kswapd consuming 100% CPU when highest zone is small
** Changed in: linux (Ubuntu Natty) Status: In Progress = Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/808509 Title: SRU: Stop kswapd consuming 100% CPU when highest zone is small To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/808509/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 808509] Re: SRU: Stop kswapd consuming 100% CPU when highest zone is small
@Tim, Will do, however I will probably get around to this on Thursday as I'm off on sick leave until then. I have a good set of reproducer scripts + H/W that can faithfully trigger the bug. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/808509 Title: SRU: Stop kswapd consuming 100% CPU when highest zone is small To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/808509/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 808509] Re: SRU: Stop kswapd consuming 100% CPU when highest zone is small
gregkh has declined Mel's patchset for 2.6.38.y as it is no longer supported as a stable release. ** Package changed: linux-meta (Ubuntu) = linux (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/808509 Title: SRU: Stop kswapd consuming 100% CPU when highest zone is small To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/808509/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 808509] Re: SRU: Stop kswapd consuming 100% CPU when highest zone is small
@Tim, does this invalid these patches for a SRU then? Or can we still run with them? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/808509 Title: SRU: Stop kswapd consuming 100% CPU when highest zone is small To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/808509/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 808509] Re: SRU: Stop kswapd consuming 100% CPU when highest zone is small
Colin - We could still SRU theses for Natty, but I'd definitely need a reproducer. I assume you have a reliable method for demonstrating the problem? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/808509 Title: SRU: Stop kswapd consuming 100% CPU when highest zone is small To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/808509/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 808509] Re: SRU: Stop kswapd consuming 100% CPU when highest zone is small
From the posting: The reproduction case is almost always during copying large files that kswapd pegs at 100% CPU until the file is deleted or cache is dropped. I believe I've seen this behaviour on earlier hardware than sandybridge, I can trigger it with good reliability using abocks image-writer to create a liveusb version of the GNOME3 isos (from gnome.org) however the hardware is question unfortunately died recently. Any large file copy operation should trigger it on sandybridge according to Mel though.. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/808509 Title: SRU: Stop kswapd consuming 100% CPU when highest zone is small To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/808509/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 808509] Re: SRU: Stop kswapd consuming 100% CPU when highest zone is small
Colin - In your copious spare time perhaps you could try building this Natty master-next kernel and testing it on an SB: The following changes since commit 006d932cf137dfcc156647dc08a0dda6e3e0f890: Tao Ma (1): ext4: init timer earlier to avoid a kernel panic in __save_error_info, CVE-2011-2493 are available in the git repository at: git://kernel.ubuntu.com/rtg/ubuntu-natty.git lp808509-kswapd Mel Gorman (5): mm: vmscan: correct check for kswapd sleeping in sleeping_prematurely mm: vmscan: kswapd should not free an excessive number of pages when balancing small zones mm: vmscan: do not apply pressure to slab if we are not applying pressure to zone mm: vmscan: evaluate the watermarks against the correct classzone mm: vmscan: only read new_classzone_idx from pgdat when reclaiming successfully include/linux/swap.h |9 ++ mm/vmscan.c | 75 -- 2 files changed, 57 insertions(+), 27 deletions(-) ** CVE added: http://www.cve.mitre.org/cgi- bin/cvename.cgi?name=2011-2493 ** Also affects: linux (Ubuntu Natty) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Oneiric) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Oneiric) Status: New = Fix Released ** Changed in: linux (Ubuntu Natty) Status: New = In Progress ** Changed in: linux (Ubuntu Natty) Assignee: (unassigned) = Tim Gardner (timg-tpi) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/808509 Title: SRU: Stop kswapd consuming 100% CPU when highest zone is small To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/808509/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
