kernel June 2011

kernel@lists.fedoraproject.org

22 participants
14 discussions

fedora 14 kernel performance with ip forwarding workload
by Jesse Brandeburg 04 Jun '15

04 Jun '15

The other day I was running the stock fedora kernel on my ip forwarding setup, to see what the performance was, and the performance wasn't very good. system is S5520HC dual socket 2.93GHz Xeon 5570 (Nehalem) with 3 quad port 82580 adapters (12 ports). Traffic is bidirectional 64 byte packets being forwarded and received on each port, basically port to port routing. I am only using 12 flows currently. The driver is igb, and I am using an affinity script that lines up each pair of ports that are forwarding traffic into optimal configurations for cache locality. I am also disabling remote_node_defrag_ratio to stop cross node traffic. With the fedora default kernel from F14 it appears that CONFIG_NETFILTER=y means that I cannot unload all of netfilter even if I stop iptables service. perf showed netfilter being prominent, and removing it gives me much higher throughput. Is there a reason CONFIG_NETFILTER=y ? Isn't it a good thing to be able to disable netfilter if you want to? Jesse

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f15 2.6.39 rebase
by Dave Jones 26 Jul '11

26 Jul '11

I've just pushed a f15-2.6.39 branch which contains a work in progress rebase. The only thing that I'm really concerned about in this right now is X regressions. We had a drm-next backport to .38 and moving that to .39 turned up a ton of rejects. I fixed up a few by hand, but the resulting compile failures made my head hurt, so I've mostly left them disabled. If the nouveau/intel drm dudes could look over that branch and fix up whatever is necessary, we can look at getting this out to people soon. (looking ahead, after its release pushing 3.0.x as 2.6.40 is probably going to happen, in a shorter timeframe than what took us to get .39 ready) Dave

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3.0.rc4
by Genes MailLists 04 Jul '11

04 Jul '11

When I install kernel-3.0-0.rc4.git0.2.fc16.x86_64.rpm from koji on F15 I get these warnings - how to I make them go away? thanks! gene -------------------- W: Possible missing firmware "nouveau/fuc41ad" for kernel module "nouveau.ko" W: Possible missing firmware "nouveau/fuc41ac" for kernel module "nouveau.ko" W: Possible missing firmware "nouveau/fuc409d" for kernel module "nouveau.ko" W: Possible missing firmware "nouveau/fuc409c" for kernel module "nouveau.ko" W: Possible missing firmware "nouveau/nvc4_fuc41ad" for kernel module "nouveau.ko" W: Possible missing firmware "nouveau/nvc4_fuc41ac" for kernel module "nouveau.ko" W: Possible missing firmware "nouveau/nvc4_fuc409d" for kernel module "nouveau.ko" W: Possible missing firmware "nouveau/nvc4_fuc409c" for kernel module "nouveau.ko" W: Possible missing firmware "nouveau/nvc3_fuc41ad" for kernel module "nouveau.ko" W: Possible missing firmware "nouveau/nvc3_fuc41ac" for kernel module "nouveau.ko" W: Possible missing firmware "nouveau/nvc3_fuc409d" for kernel module "nouveau.ko" W: Possible missing firmware "nouveau/nvc3_fuc409c" for kernel module "nouveau.ko" W: Possible missing firmware "nouveau/nvc0_fuc41ad" for kernel module "nouveau.ko" W: Possible missing firmware "nouveau/nvc0_fuc41ac" for kernel module "nouveau.ko" W: Possible missing firmware "nouveau/nvc0_fuc409d" for kernel module "nouveau.ko" W: Possible missing firmware "nouveau/nvc0_fuc409c" for kernel module "nouveau.ko" W: Possible missing firmware "cbfw_fc.bin" for kernel module "bfa.ko" W: Possible missing firmware "ctfw_cna.bin" for kernel module "bfa.ko" W: Possible missing firmware "ctfw_fc.bin" for kernel module "bfa.ko"

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USB modem driver ID additions to F15 and F14
by Dan Williams 30 Jun '11

30 Jun '11

Hi, I'd like to request the following upstream patches be applied to F15 (and if possible F14) kernels: (SHAs from linux-2.6.git) cdacb598fe7ab85de80908c818dd7d66a2971117 option: add Zoom 4597 modem USB IDs 15badbcc8eede58b0d7e53a3acde1c90a7b6e40e option: add Alcatel X200 to sendsetup blacklist 5c3e4076ee8253c1e3688d10653ddee47a03b0db option: add Prolink PH300 modem IDs 7e8e62e4a5d26e4cb45f25dddd093837d75616c2 USB: option Add blacklist for ZTE K3765-Z (19d2:2002) Simple ID additions and blacklist updates; should be a pretty straight cherry-pick. Thanks! Dan

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testing 3.0 kernel
by Genes MailLists 28 Jun '11

28 Jun '11

I'm testing the 3.0-0.rc3.git5.1.fc16.x86_64 kernel (on F15) I installed device-mapper*, perf, procps and mdadm from rawhide. On install it did complain (W) about possible missing firmware for nouveau and 2 other items (sorry my F15 X session crashed and I lost the log) - not sure what firmware I should be loading - xorg-x11-drv-nouveau? What else ? Testing on sandy bridge laptop. I see a couple of issues that may be of interest (sorry for text wrap) regards gene/ ------------------------- Issue (I) -------------------------- Jun 20 23:54:57 lap3 kernel: [ 175.294631] =================================================== Jun 20 23:54:57 lap3 kernel: [ 175.294634] [ INFO: suspicious rcu_dereference_check() usage. ] Jun 20 23:54:57 lap3 kernel: [ 175.294636] --------------------------------------------------- Jun 20 23:54:57 lap3 kernel: [ 175.294639] security/selinux/netport.c:143 invoked rcu_dereference_check() wit hout protection! Jun 20 23:54:57 lap3 kernel: [ 175.294642] Jun 20 23:54:57 lap3 kernel: [ 175.294642] other info that might help us debug this: Jun 20 23:54:57 lap3 kernel: [ 175.294643] Jun 20 23:54:57 lap3 kernel: [ 175.294645] Jun 20 23:54:57 lap3 kernel: [ 175.294646] rcu_scheduler_active = 1, debug_locks = 0 Jun 20 23:54:57 lap3 kernel: [ 175.294649] 1 lock held by named/1262: Jun 20 23:54:57 lap3 kernel: [ 175.294651] #0: (sel_netport_lock){+.....}, at: [<ffffffff81219bfa>] sel_net port_sid+0xa1/0x207 Jun 20 23:54:57 lap3 kernel: [ 175.294662] Jun 20 23:54:57 lap3 kernel: [ 175.294663] stack backtrace: Jun 20 23:54:57 lap3 kernel: [ 175.294667] Pid: 1262, comm: named Not tainted 3.0-0.rc3.git5.1.fc16.x86_64 #1 Jun 20 23:54:57 lap3 kernel: [ 175.294670] Call Trace: Jun 20 23:54:57 lap3 kernel: [ 175.294677] [<ffffffff81086d51>] lockdep_rcu_dereference+0xa8/0xb0 Jun 20 23:54:57 lap3 kernel: [ 175.294682] [<ffffffff81219cf4>] sel_netport_sid+0x19b/0x207 Jun 20 23:54:57 lap3 kernel: [ 175.294686] [<ffffffff81219b59>] ? sel_netport_find+0x93/0x93 Jun 20 23:54:57 lap3 kernel: [ 175.294693] [<ffffffff81214050>] selinux_socket_bind+0x13b/0x26f Jun 20 23:54:57 lap3 kernel: [ 175.294698] [<ffffffff8108919a>] ? lock_release+0x173/0x19c Jun 20 23:54:57 lap3 kernel: [ 175.294704] [<ffffffff81105c69>] ? might_fault+0xa5/0xac Jun 20 23:54:57 lap3 kernel: [ 175.294708] [<ffffffff81105c20>] ? might_fault+0x5c/0xac Jun 20 23:54:57 lap3 kernel: [ 175.294713] [<ffffffff8120dfef>] security_socket_bind+0x16/0x18 Jun 20 23:54:57 lap3 kernel: [ 175.294718] [<ffffffff813f9767>] sys_bind+0x73/0xcf Jun 20 23:54:57 lap3 kernel: [ 175.294724] [<ffffffff814fba3a>] ? sysret_check+0x2e/0x69 Jun 20 23:54:57 lap3 kernel: [ 175.294728] [<ffffffff81089685>] ? trace_hardirqs_on_caller+0x10b/0x12f Jun 20 23:54:57 lap3 kernel: [ 175.294734] [<ffffffff810ac299>] ? audit_syscall_entry+0x11c/0x148 Jun 20 23:54:57 lap3 kernel: [ 175.294738] [<ffffffff8125d65e>] ? trace_hardirqs_on_thunk+0x3a/0x3f Jun 20 23:54:57 lap3 kernel: [ 175.294742] [<ffffffff814fba02>] system_call_fastpath+0x16/0x1b ------------------------- Issue (I) -------------------------- At boot I see this : Jun 20 19:52:48 lap3 kernel: [ 2.486256] alg: skcipher: Failed to load transform for ecb-aes-aesni: -2 Jun 20 19:52:48 lap3 kernel: [ 2.486788] alg: No test for __gcm-aes-aesni (__driver-gcm-aes-aesni) ------------------- output of ver_linux ----------------------- ver_linux If some fields are empty or look unusual you may have an old version. Compare to the current minimal requirements in Documentation/Changes. Linux lap3.prv.sapience.com 3.0-0.rc3.git5.1.fc16.x86_64 #1 SMP Fri Jun 17 16:21:59 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux Gnu C 4.6.0 Gnu make 3.82 binutils 2.21.51.0.6 util-linux 2.19.1 mount support module-init-tools 3.16 e2fsprogs 1.41.14 jfsutils 1.1.13 xfsprogs 3.1.4 pcmciautils 017 quota-tools 4.00-pre1. PPP 2.4.5 isdn4k-utils 3.13 Linux C Library 2.14 Dynamic linker (ldd) 2.14 Procps 3.2.8 Net-tools 1.60 Kbd 1.15.2 oprofile 0.9.6 Sh-utils 8.10 wireless-tools 29 Modules Loaded tcp_lp hidp fuse ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat xt_CHECKSUM iptable_mangle bridge stp llc sunrpc cpufreq_ondemand acpi_cpufreq freq_table mperf capi kernelcapi rfcomm bnep ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack xts gf128mul dm_crypt arc4 uvcvideo videodev media v4l2_compat_ioctl32 btusb bluetooth snd_hda_codec_conexant microcode joydev snd_hda_intel snd_hda_codec snd_hwdep snd_seq i2c_i801 snd_seq_device snd_pcm iwlagn xhci_hcd mac80211 cfg80211 snd_timer iTCO_wdt iTCO_vendor_support snd_page_alloc e1000e thinkpad_acpi rfkill snd soundcore virtio_net kvm_intel kvm sdhci_pci sdhci firewire_ohci mmc_core firewire_core crc_itu_t wmi i915 drm_kms_helper drm i2c_algo_bit i2c_core video ------------------- output of lspci ----------------------- 00:00.0 Host bridge: Intel Corporation Sandy Bridge DRAM Controller (rev 09) 00:02.0 VGA compatible controller: Intel Corporation Device 0126 (rev 09) 00:16.0 Communication controller: Intel Corporation Cougar Point HECI Controller #1 (rev 04) 00:16.3 Serial controller: Intel Corporation Cougar Point KT Controller (rev 04) 00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (rev 04) 00:1a.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #2 (rev 04) 00:1b.0 Audio device: Intel Corporation Cougar Point High Definition Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 1 (rev b4) 00:1c.1 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 2 (rev b4) 00:1c.3 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 4 (rev b4) 00:1c.4 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 5 (rev b4) 00:1c.6 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 7 (rev b4) 00:1d.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation Cougar Point LPC Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation Cougar Point 6 port SATA AHCI Controller (rev 04) 00:1f.3 SMBus: Intel Corporation Cougar Point SMBus Controller (rev 04) 03:00.0 Network controller: Intel Corporation Centrino Ultimate-N 6300 (rev 35) 0d:00.0 System peripheral: Ricoh Co Ltd Device e823 (rev 05) 0d:00.3 FireWire (IEEE 1394): Ricoh Co Ltd Device e832 (rev 04) 0e:00.0 USB Controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04)

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more errors 3.0 rc4 and i915
by Genes MailLists 26 Jun '11

26 Jun '11

I am seeing a pile of these: ------------ /var/log/messages ------------------------- Jun 26 23:35:46 lap3 kernel: [ 5571.026866] WARNING: at drivers/gpu/drm/i915/i915_drv.c:322 gen6_gt_force_wake_ge t+0x2a/0xa3 [i915]() Jun 26 23:35:46 lap3 kernel: [ 5571.026867] Hardware name: 4270CTO Jun 26 23:35:46 lap3 kernel: [ 5571.026868] Modules linked in: tcp_lp fuse hidp ebtable_nat ebtables ipt_MASQUERA DE iptable_nat nf_nat xt_CHECKSUM iptable_mangle bridge stp llc sunrpc cpufreq_ondemand acpi_cpufreq freq_table m perf rfcomm bnep capi kernelcapi ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables nf_connt rack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack xts gf128mul dm_crypt arc4 uvcvideo videodev media v4l2_compat_ioc tl32 btusb bluetooth microcode snd_hda_codec_conexant joydev snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_se q_device iwlagn mac80211 snd_pcm cfg80211 i2c_i801 xhci_hcd snd_timer iTCO_wdt iTCO_vendor_support snd_page_alloc e1000e thinkpad_acpi rfkill snd soundcore virtio_net kvm_intel kvm firewire_ohci firewire_core sdhci_pci sdhci c rc_itu_t mmc_core wmi i915 drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: scsi_wait_scan] Jun 26 23:35:46 lap3 kernel: [ 5571.026895] Pid: 5255, comm: kworker/u:16 Tainted: G W 3.0-0.rc4.git3.1. fc16.x86_64 #1 Jun 26 23:35:46 lap3 kernel: [ 5571.026897] Call Trace: Jun 26 23:35:46 lap3 kernel: [ 5571.026899] [<ffffffff81057b14>] warn_slowpath_common+0x83/0x9b Jun 26 23:35:46 lap3 kernel: [ 5571.026901] [<ffffffff81057b46>] warn_slowpath_null+0x1a/0x1c Jun 26 23:35:46 lap3 kernel: [ 5571.026906] [<ffffffffa006b4d7>] gen6_gt_force_wake_get+0x2a/0xa3 [i915] Jun 26 23:35:46 lap3 kernel: [ 5571.026913] [<ffffffffa0075c37>] i915_read8+0x34/0x6d [i915] Jun 26 23:35:46 lap3 kernel: [ 5571.026920] [<ffffffffa0077d43>] i915_restore_display+0x103d/0x10bc [i915] Jun 26 23:35:46 lap3 kernel: [ 5571.026928] [<ffffffffa0078003>] i915_restore_state+0x58/0x1f9 [i915] Jun 26 23:35:46 lap3 kernel: [ 5571.026934] [<ffffffffa006b100>] i915_drm_thaw+0x53/0xde [i915] Jun 26 23:35:46 lap3 kernel: [ 5571.026940] [<ffffffffa006b36b>] i915_resume+0x45/0x5c [i915] Jun 26 23:35:46 lap3 kernel: [ 5571.026946] [<ffffffffa006b398>] i915_pm_resume+0x16/0x18 [i915] Jun 26 23:35:46 lap3 kernel: [ 5571.026948] [<ffffffff812760db>] pci_pm_resume+0x8b/0xa0 Jun 26 23:35:46 lap3 kernel: [ 5571.026949] [<ffffffff8132765b>] pm_op+0xa9/0x149 Jun 26 23:35:46 lap3 kernel: [ 5571.026951] [<ffffffff81327a8c>] device_resume+0xce/0x1d4 Jun 26 23:35:46 lap3 kernel: [ 5571.026952] [<ffffffff81327bb0>] async_resume+0x1e/0x46 Jun 26 23:35:46 lap3 kernel: [ 5571.026954] [<ffffffff8107b930>] async_run_entry_fn+0x9e/0x132 Jun 26 23:35:46 lap3 kernel: [ 5571.026956] [<ffffffff8107b892>] ? async_schedule+0x17/0x17 Jun 26 23:35:46 lap3 kernel: [ 5571.026958] [<ffffffff8106ff51>] process_one_work+0x1ce/0x379 Jun 26 23:35:46 lap3 kernel: [ 5571.026960] [<ffffffff8106fed0>] ? process_one_work+0x14d/0x379 Jun 26 23:35:46 lap3 kernel: [ 5571.026962] [<ffffffff8108719c>] ? lock_acquired+0x1f6/0x229 Jun 26 23:35:46 lap3 kernel: [ 5571.026964] [<ffffffff81070c4d>] worker_thread+0xda/0x15d Jun 26 23:35:46 lap3 kernel: [ 5571.026966] [<ffffffff81070b73>] ? manage_workers+0x175/0x175 Jun 26 23:35:46 lap3 kernel: [ 5571.026968] [<ffffffff81070b73>] ? manage_workers+0x175/0x175 Jun 26 23:35:46 lap3 kernel: [ 5571.026970] [<ffffffff810745e9>] kthread+0xa8/0xb0 Jun 26 23:35:46 lap3 kernel: [ 5571.026973] [<ffffffff814fb024>] kernel_thread_helper+0x4/0x10 Jun 26 23:35:46 lap3 kernel: [ 5571.026975] [<ffffffff814f36d4>] ? retint_restore_args+0x13/0x13 Jun 26 23:35:46 lap3 kernel: [ 5571.026977] [<ffffffff81074541>] ? __init_kthread_worker+0x5a/0x5a Jun 26 23:35:46 lap3 kernel: [ 5571.026979] [<ffffffff814fb020>] ? gs_change+0x13/0x13 Jun 26 23:35:46 lap3 kernel: [ 5571.026980] ---[ end trace f58c80338dd6a220 ]--- ------------ end /var/log/messages ------------------------- # lspci 00:00.0 Host bridge: Intel Corporation Sandy Bridge DRAM Controller (rev 09) 00:02.0 VGA compatible controller: Intel Corporation Device 0126 (rev 09) 00:16.0 Communication controller: Intel Corporation Cougar Point HECI Controller #1 (rev 04) 00:16.3 Serial controller: Intel Corporation Cougar Point KT Controller (rev 04) 00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (rev 04) 00:1a.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #2 (rev 04) 00:1b.0 Audio device: Intel Corporation Cougar Point High Definition Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 1 (rev b4) 00:1c.1 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 2 (rev b4) 00:1c.3 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 4 (rev b4) 00:1c.4 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 5 (rev b4) 00:1c.6 PCI bridge: Intel Corporation Cougar Point PCI Express Root Port 7 (rev b4) 00:1d.0 USB Controller: Intel Corporation Cougar Point USB Enhanced Host Controller #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation Cougar Point LPC Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation Cougar Point 6 port SATA AHCI Controller (rev 04) 00:1f.3 SMBus: Intel Corporation Cougar Point SMBus Controller (rev 04) 03:00.0 Network controller: Intel Corporation Centrino Ultimate-N 6300 (rev 35) 0d:00.0 System peripheral: Ricoh Co Ltd Device e823 (rev 05) 0d:00.3 FireWire (IEEE 1394): Ricoh Co Ltd Device e832 (rev 04) 0e:00.0 USB Controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04)

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rcu errors from kernel-3.0-0.rc4.git3.1.fc16.x86_64
by Genes MailLists 26 Jun '11

26 Jun '11

Using kernel-3.0-0.rc4.git3.1.fc16.x86_64 kernel I get: Jun 26 18:07:38 lap3 kernel: [ 340.907928] =================================================== Jun 26 18:07:38 lap3 kernel: [ 340.909769] [ INFO: suspicious rcu_dereference_check() usage. ] Jun 26 18:07:38 lap3 kernel: [ 340.910713] --------------------------------------------------- Jun 26 18:07:38 lap3 kernel: [ 340.911662] security/selinux/netport.c:143 invoked rcu_dereference_check() without protection! Jun 26 18:07:38 lap3 kernel: [ 340.912641] Jun 26 18:07:38 lap3 kernel: [ 340.912642] other info that might help us debug this: Jun 26 18:07:38 lap3 kernel: [ 340.912642] Jun 26 18:07:38 lap3 kernel: [ 340.915557] Jun 26 18:07:38 lap3 kernel: [ 340.915558] rcu_scheduler_active = 1, debug_locks = 0 Jun 26 18:07:38 lap3 kernel: [ 340.917509] 1 lock held by named/1617: Jun 26 18:07:38 lap3 kernel: [ 340.918492] #0: (sel_netport_lock){+.....}, at: [<ffffffff812191d6>] sel_netport_sid+0xa1/0x207 Jun 26 18:07:38 lap3 kernel: [ 340.919540] Jun 26 18:07:38 lap3 kernel: [ 340.919540] stack backtrace: Jun 26 18:07:38 lap3 kernel: [ 340.921583] Pid: 1617, comm: named Not tainted 3.0-0.rc4.git3.1.fc16.x86_64 #1 Jun 26 18:07:38 lap3 kernel: [ 340.922648] Call Trace: Jun 26 18:07:38 lap3 kernel: [ 340.923711] [<ffffffff81086ced>] lockdep_rcu_dereference+0xa8/0xb0 Jun 26 18:07:38 lap3 kernel: [ 340.924805] [<ffffffff812192d0>] sel_netport_sid+0x19b/0x207 Jun 26 18:07:38 lap3 kernel: [ 340.925907] [<ffffffff81219135>] ? sel_netport_find+0x93/0x93 Jun 26 18:07:38 lap3 kernel: [ 340.927009] [<ffffffff81213670>] selinux_socket_bind+0x13b/0x26f Jun 26 18:07:38 lap3 kernel: [ 340.928121] [<ffffffff81089136>] ? lock_release+0x173/0x19c Jun 26 18:07:38 lap3 kernel: [ 340.929242] [<ffffffff811054c9>] ? might_fault+0xa5/0xac Jun 26 18:07:38 lap3 kernel: [ 340.930357] [<ffffffff81105480>] ? might_fault+0x5c/0xac Jun 26 18:07:38 lap3 kernel: [ 340.931469] [<ffffffff8120d697>] security_socket_bind+0x16/0x18 Jun 26 18:07:38 lap3 kernel: [ 340.932586] [<ffffffff813f8427>] sys_bind+0x73/0xcf Jun 26 18:07:38 lap3 kernel: [ 340.933716] [<ffffffff814f9eba>] ? sysret_check+0x2e/0x69 Jun 26 18:07:38 lap3 kernel: [ 340.934828] [<ffffffff81089621>] ? trace_hardirqs_on_caller+0x10b/0x12f Jun 26 18:07:38 lap3 kernel: [ 340.935949] [<ffffffff810ac269>] ? audit_syscall_entry+0x11c/0x148 Jun 26 18:07:38 lap3 kernel: [ 340.937070] [<ffffffff8125c93e>] ? trace_hardirqs_on_thunk+0x3a/0x3f Jun 26 18:07:38 lap3 kernel: [ 340.938203] [<ffffffff814f9e82>] system_call_fastpath+0x16/0x1b

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[PATCH] Make IPv6 built-in.
by Bill Nottingham 25 Jun '11

25 Jun '11

1) It can't be unloaded anyway. 2) If it's a module, it will be loaded at entirely random times, depending on what sockets a user opens, what functions they call, etc. For example, 'ping6 -?' loads IPv6. 3) Because of its modularity, users attempt to disable it in a variety of misguided ways, which may or may not work depending on when the module is loaded. 4) Because of its unpredictability of loading, setting IPv6 sysctls for an interface becomes complicated. It requires both the presence of the device, and the presence of the IPv6 module; however, these events aren't tied together. By building in IPv6, we solve these issues, and make the behavior of the system more predictable. Plus, hey, it's the future. To disable IPv6, boot with: ipv6.disable_ipv6=1 (to disable IPv6 addresses on all interfaces) or ipv6.disable=1 (to render the entire module non-functional) --- config-generic | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/config-generic b/config-generic index 6b18a41..524e8fd 100644 --- a/config-generic +++ b/config-generic @@ -814,7 +814,7 @@ CONFIG_IP_VS_NQ=m CONFIG_IP_VS_FTP=m CONFIG_IP_VS_PE_SIP=m -CONFIG_IPV6=m +CONFIG_IPV6=y CONFIG_IPV6_PRIVACY=y CONFIG_IPV6_ROUTER_PREF=y CONFIG_IPV6_ROUTE_INFO=y -- 1.7.5.2

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[PATCH 0/4] utrace for 3.0 kernel
by Oleg Nesterov 21 Jun '11

21 Jun '11

Hello. Utrace patches for 3.0 kernel 0001-ptrace-temporary-revert-the-recent-ptrace-jobctl-re.patch 0002-tracehooks-preparation-for-ptrace-utrace.patch 0003-utrace-core.patch 0004-implement-utrace-ptrace.patch also available in the following git branch git://git.kernel.org/pub/scm/linux/kernel/git/oleg/misc.git utrace-3.0 Note: 1/4 is the temporary hack to keep utrace working, we need to completely rework ptrace/utrace interaction. Oleg.

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[PATCH F-15 0/1] iwlwifi: fix general 11n instability (common bug 648732)
by Stanislaw Gruszka 21 Jun '11

21 Jun '11

This patch is missed fix for fedora common bug 648732 on F-15. Other patches needed to address the bug are already in 2.6.38. This patch was posted to stable, bud did not get applied on 2.6.38 (it's in 2.6.39.2+)

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kernel June 2011