Launchpad has imported 37 comments from the remote bug at https://bugzilla.redhat.com/show_bug.cgi?id=459202.
If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. ------------------------------------------------------------------------ On 2008-08-14T22:17:43+00:00 Michal wrote: Description of problem: I am unable to use my Ethernet controller: Intel Corporation 82566DC Gigabit Network Connection (rev 03). System does not see it. Pleae find dmesg output. e1000e: Intel(R) PRO/1000 Network Driver - 0.2.0 e1000e: Copyright (c) 1999-2007 Intel Corporation. ACPI: PCI Interrupt 0000:00:19.0[A] -> GSI 22 (level, low) -> IRQ 22 PCI: Setting latency timer of device 0000:00:19.0 to 64 iTCO_vendor_support: vendor-support=0 0000:00:19.0: The NVM Checksum Is Not Valid ACPI: PCI interrupt for device 0000:00:19.0 disabled e1000e: probe of 0000:00:19.0 failed with error -5 Version-Release number of selected component (if applicable): Driver version 0.2.0 How reproducible: Happens everytime Steps to Reproduce: 1.Boot computer Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/0 ------------------------------------------------------------------------ On 2008-08-15T00:44:06+00:00 Yanko wrote: What kernel version is this? Has this adapter ever worked under Fedora. If yes when did it stop? Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/1 ------------------------------------------------------------------------ On 2008-08-15T23:36:51+00:00 Michal wrote: I am sorry, i totally forgot about these details. Kernels which i have: 2.6.25.11-97.fc9.x86_64 2.6.25.14-108.fc9.x86_64 I guess it stopped shortly after i upgraded to F9. It must have been one of first kernel updates. I am not sure if that ever worked in F9. Strange thing, on ubuntu i can not use it too. I do not have dmesg output yet. I will try and see if this matches. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/2 ------------------------------------------------------------------------ On 2008-08-22T01:42:03+00:00 Chuck wrote: Can you post the output of 'lspci -nn -s 0000:00:19.0'? Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/3 ------------------------------------------------------------------------ On 2008-08-22T06:41:39+00:00 Michal wrote: Output you have requested: 00:19.0 Ethernet controller [0200]: Intel Corporation 82566DC Gigabit Network Connection [8086:104b] (rev 03) Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/4 ------------------------------------------------------------------------ On 2008-09-11T17:27:22+00:00 Jesse wrote: The driver you have supports your hardware, but is erroring out on load. The "NVM checksum is not valid" means that something corrupted your system BIOS flash. Can you please give us details about the hardware in your system, attach the output of # lspci -vvv > lspci.txt # dmidecode > dmiout.txt we have some reports that Lenovo systems (a lot of them) are starting to have this issue. Please DO NOT run ibautil as some sites on the web suggest to try to fix this issue. It will likely cause you to have to replace your motherboard to get LAN functionality back. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/10 ------------------------------------------------------------------------ On 2008-09-11T22:31:41+00:00 Michal wrote: Created attachment 316491 dmiout.txt Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/11 ------------------------------------------------------------------------ On 2008-09-11T22:32:07+00:00 Michal wrote: Created attachment 316492 lspci.txt Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/12 ------------------------------------------------------------------------ On 2008-09-12T06:28:13+00:00 Michal wrote: I have messed around a little with my card. Just wanted to check some suggestions point out here http://www.thinkwiki.org/wiki/Problem_with_e1000:_EEPROM_Checksum_Is_Not_Valid#Solutions Little orange led on my ethernet is constantly flashing, when i tried with unloading e1000e module it did not changed anything. When i plugged in cable it stopped and green led showed up, meaning that connection is ok though driver still failed to load. If you need any other info i will gladly help. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/13 ------------------------------------------------------------------------ On 2008-09-12T16:28:34+00:00 Jesse wrote: okay, so you have an HP machine with an ICH8 chipset. I don't know what the little orange LED flashing means, I will have to check on that. can you get into the iAMT setup just after BIOS completes by pressing CTRL-p? not sure if that might help you or not. If I attach a debug driver here would you be willing to compile and run it? Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/14 ------------------------------------------------------------------------ On 2008-09-14T14:42:31+00:00 Michal wrote: I am not able to open iAMT setup. I believe that i do not have that option as i have found that to enable that i need to go to my BIOS settings and turn it on in Power section. Well, i do not have it there. Yes, please attach driver. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/15 ------------------------------------------------------------------------ On 2008-09-22T23:08:54+00:00 Jesse wrote: Created attachment 317425 driver with csum check bypass here is a driver that just prints the message but doesn't error out if the checksum validation fails. This should allow you to run ethtool -e ethX after loading the driver. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/18 ------------------------------------------------------------------------ On 2008-09-22T23:10:02+00:00 Jesse wrote: the difference in the driver I just attached is: diff -rup e1000e-0.4.1.7.orig/src/netdev.c e1000e-0.4.1.7/src/netdev.c --- e1000e-0.4.1.7.orig/src/netdev.c 2008-06-23 09:27:33.000000000 -0700 +++ e1000e-0.4.1.7/src/netdev.c 2008-09-22 16:06:59.000000000 -0700 @@ -56,7 +56,7 @@ #define DRV_DEBUG -#define DRV_VERSION "0.4.1.7" DRV_NAPI DRV_DEBUG +#define DRV_VERSION "0.4.1.7_nocsum" DRV_NAPI DRV_DEBUG char e1000e_driver_name[] = "e1000e"; const char e1000e_driver_version[] = DRV_VERSION; @@ -5309,8 +5309,10 @@ static int __devinit e1000_probe(struct break; if (i == 2) { e_err("The NVM Checksum Is Not Valid\n"); + /* JJJ skip around error path err = -EIO; goto err_eeprom; + JJJ end */ } } Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/19 ------------------------------------------------------------------------ On 2008-09-22T23:35:50+00:00 Jesse wrote: also, whole piles of reports now starting to converge, many of them linked here: http://bugzilla.kernel.org/show_bug.cgi?id=11382 I'm trying to work a plan to help address this soonest. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/21 ------------------------------------------------------------------------ On 2008-09-23T01:40:51+00:00 Chuck wrote: Michal, have you ever booted a Fedora 10 Alpha or rawhide disk on that system? Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/24 ------------------------------------------------------------------------ On 2008-09-23T06:51:35+00:00 Michal wrote: Yes, i have rawhide on my system. Last two kernels i have 2.6.27-0.226.rc1.git5.fc10.i686 2.6.27-0.244.rc2.git1.fc10.i686 I do not know which one killed my port. If you want me to run it or something i am unable to have any internet connection on that kernels, wifi does not work, eth you know. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/28 ------------------------------------------------------------------------ On 2008-09-23T14:16:33+00:00 Warren wrote: Does this mean Fedora 9 is not to blame for killing e1000e? Slashdot reported that Fedora 9 and 10 are affected, but it sounds like only rawhide has the problem. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/33 ------------------------------------------------------------------------ On 2008-09-23T15:16:21+00:00 Jon wrote: FWIW, I've heard of similar problems with recent -RT kernels. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/34 ------------------------------------------------------------------------ On 2008-09-23T20:37:36+00:00 Jesse wrote: I suggest this is severity urgent now. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/48 ------------------------------------------------------------------------ On 2008-09-24T00:15:30+00:00 John wrote: Patches to the e1000e driver to protect the NVM were posted to netdev a few ours ago. They need to be tried on this problem. Either it will fix the problem or it should point to what is causing the problem. The patches are obviously for the 2.6.27-rc kernels. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/58 ------------------------------------------------------------------------ On 2008-09-24T13:01:47+00:00 Renato wrote: Someone try this patchs from Jeff Kirsher (Intel)? http://lkml.org/lkml/2008/9/23/427 http://lkml.org/lkml/2008/9/23/431 http://lkml.org/lkml/2008/9/23/432 And I think that is a good idea change priority and severity to higher, because this bug can DAMAGED a hardware. Best regards, Renato Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/75 ------------------------------------------------------------------------ On 2008-09-24T15:20:31+00:00 Will wrote: kernel-2.6.27-0.352.rc7.git1.fc10 (http://koji.fedoraproject.org/koji/buildinfo?buildID=64060) includes a fix for e1000 and (temporarily) disables e1000e. This is probably sufficient for F10Beta (pending some regression testing) Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/80 ------------------------------------------------------------------------ On 2008-09-24T15:26:44+00:00 Andy wrote: I guess that will work, but you've now killed the wired network on quite a few hardware platforms. Pulling the patches from comment #20 would probably be better for F10Beta. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/81 ------------------------------------------------------------------------ On 2008-09-25T19:33:01+00:00 Warren wrote: > And I think that is a good idea change priority and severity to higher, > because this bug can DAMAGED a hardware. Nobody is changing priority and severity because those fields are meaningless. We should really remove those fields from the interface. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/98 ------------------------------------------------------------------------ On 2008-09-26T02:02:31+00:00 Jesse wrote: please see my message on lkml titled "e1000e NVM corruption issue status" Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/108 ------------------------------------------------------------------------ On 2008-09-26T04:20:09+00:00 Warren wrote: http://lkml.org/lkml/2008/9/25/510 This appears to be the post Jesse is referring to. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/111 ------------------------------------------------------------------------ On 2008-09-29T13:47:36+00:00 Luis wrote: Another message from Jesse Brandeburg in LKML isd a list of the patches being used to debug the issue and under test as possible fixes to the issue: http://lkml.org/lkml/2008/9/25/515 Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/122 ------------------------------------------------------------------------ On 2008-10-04T00:35:10+00:00 David wrote: *** Bug 465127 has been marked as a duplicate of this bug. *** Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/172 ------------------------------------------------------------------------ On 2008-10-04T13:11:59+00:00 Boricua wrote: I was just hit by this bud after doing preupgrade from F9 64bit to F10 beta 64bit. The system states "no network device available". I'm including the output I got after running dmesg and other commands (hope it helps): [Francisco@localhost ~]$ su - Password: [root@localhost ~]# /sbin/ifconfig lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:124 errors:0 dropped:0 overruns:0 frame:0 TX packets:124 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:10080 (9.8 KiB) TX bytes:10080 (9.8 KiB) [root@localhost ~]# dmesg | grep eth Driver 'sd' needs updating - please use bus_type methods Driver 'sr' needs updating - please use bus_type methods [root@localhost ~]# "dhclient eth0" // -bash: dhclient eth0: command not found [root@localhost ~]# dhclient eth0 Device "eth0" does not exist. Cannot find device "eth0" [root@localhost ~]# dhclient eth1 Device "eth1" does not exist. Cannot find device "eth1" [root@localhost ~]# lscpi -v|grep -i ethernet -bash: lscpi: command not found [root@localhost ~]# lspci -v|grep -i ethernet 00:19.0 Ethernet controller: Intel Corporation 82566DC Gigabit Network Connection (rev 02) [root@localhost ~]# ifconfig -a lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:668 errors:0 dropped:0 overruns:0 frame:0 TX packets:668 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:55232 (53.9 KiB) TX bytes:55232 (53.9 KiB) [root@localhost ~]# Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/174 ------------------------------------------------------------------------ On 2008-10-04T14:04:02+00:00 Boricua wrote: I was able to solve this by manual installation of the latest available kernel, 2.6.27-0.382.rc8.git4.fc10, along with the equivalent kernel- firmware. Worked immediately. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/175 ------------------------------------------------------------------------ On 2008-10-04T22:07:48+00:00 Renato wrote: Fixed? <http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4a7703582836f55a1cbad0e2c1c6ebbee3f9b3a7> Best regards, Renato S. Yamane Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/177 ------------------------------------------------------------------------ On 2008-10-11T12:34:43+00:00 Michal wrote: I have tried newest rawhide kernel and it does not help. I have also tried attached drivers. Did not change anything. Still no ethernet. Now i did not mess aorund with no ethtool nor some intel soft. Output of dmesg: e1000e: Intel(R) PRO/1000 Network Driver - 0.4.1.7_nocsum-NAPI e1000e: Copyright (c) 1999-2008 Intel Corporation. ACPI: PCI Interrupt 0000:00:19.0[A] -> GSI 22 (level, low) -> IRQ 22 PCI: Setting latency timer of device 0000:00:19.0 to 64 0000:00:19.0: : Failed to initialize MSI interrupts. Falling back to legacy interrupts. 0000:00:19.0: 0000:00:19.0: The NVM Checksum Is Not Valid BUG: soft lockup - CPU#0 stuck for 61s! [modprobe:3703] Modules linked in: e1000e(+) rfkill_input bridge bnep rfcomm l2cap vboxdrv ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi scsi_transport_iscsi fuse sunrpc arc4 ecb crypto_blkcipher b43 ssb rfkill mac80211 cfg80211 input_polldev ipt_REJECT xt_tcpudp nf_conntrack_ipv4 xt_state nf_conntrack iptable_filter ip_tables x_tables cpufreq_ondemand acpi_cpufreq freq_table dm_mirror dm_log dm_multipath dm_mod ipv6 sr_mod cdrom pcspkr snd_hda_intel serio_raw joydev snd_seq_dummy sg snd_seq_oss snd_seq_midi_event i915 snd_seq ata_piix snd_seq_device pata_acpi snd_pcm_oss snd_mixer_oss video output ata_generic wmi battery ac drm hci_usb snd_pcm i2c_algo_bit i2c_core iTCO_wdt iTCO_vendor_support snd_timer snd_page_alloc bluetooth snd_hwdep snd soundcore ahci libata sd_mod scsi_mod ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd [last unloaded: e1000e] CPU 0: Modules linked in: e1000e(+) rfkill_input bridge bnep rfcomm l2cap vboxdrv ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi scsi_transport_iscsi fuse sunrpc arc4 ecb crypto_blkcipher b43 ssb rfkill mac80211 cfg80211 input_polldev ipt_REJECT xt_tcpudp nf_conntrack_ipv4 xt_state nf_conntrack iptable_filter ip_tables x_tables cpufreq_ondemand acpi_cpufreq freq_table dm_mirror dm_log dm_multipath dm_mod ipv6 sr_mod cdrom pcspkr snd_hda_intel serio_raw joydev snd_seq_dummy sg snd_seq_oss snd_seq_midi_event i915 snd_seq ata_piix snd_seq_device pata_acpi snd_pcm_oss snd_mixer_oss video output ata_generic wmi battery ac drm hci_usb snd_pcm i2c_algo_bit i2c_core iTCO_wdt iTCO_vendor_support snd_timer snd_page_alloc bluetooth snd_hwdep snd soundcore ahci libata sd_mod scsi_mod ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd [last unloaded: e1000e] Pid: 3703, comm: modprobe Not tainted 2.6.26.5-45.fc9.x86_64 #1 RIP: 0010:[<ffffffffa0649c24>] [<ffffffffa0649c24>] :e1000e:e1000_flash_cycle_ich8lan+0x34/0x60 RSP: 0018:ffff81003c0699d8 EFLAGS: 00000202 RAX: 000000000000e028 RBX: ffff81003c0699f8 RCX: 000000005351a052 RDX: 00000000000006e8 RSI: 00000000000001f4 RDI: 00000000000006c3 RBP: 0000000000000018 R08: 0000000000000000 R09: 0000000000000001 R10: 00000018bd3ebd94 R11: 0000000000000000 R12: ffff81003c069958 R13: 0000000000000246 R14: 0000000000000010 R15: ffffffff810121a1 FS: 00007f5cb44006f0(0000) GS:ffffffff81417000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000cf6000 CR3: 0000000060d3e000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: [<ffffffffa0649c34>] ? :e1000e:e1000_flash_cycle_ich8lan+0x44/0x60 [<ffffffffa0649e55>] ? :e1000e:e1000_read_flash_data_ich8lan+0xa5/0x110 [<ffffffffa064a0e7>] ? :e1000e:e1000_read_nvm_ich8lan+0x117/0x150 [<ffffffffa064dc21>] ? :e1000e:e1000_validate_nvm_checksum_generic+0x41/0x80 [<ffffffffa064a600>] ? :e1000e:e1000_validate_nvm_checksum_ich8lan+0x80/0x90 [<ffffffffa06517a7>] ? :e1000e:e1000_probe+0x5e7/0xd10 [<ffffffff810f7869>] ? sysfs_addrm_finish+0x69/0x205 [<ffffffff810f73c6>] ? sysfs_find_dirent+0x1c/0x31 [<ffffffff81138628>] ? kobject_get+0x1a/0x22 [<ffffffff8114932c>] ? pci_device_probe+0xb3/0x10a [<ffffffff811b8a2a>] ? driver_probe_device+0xc0/0x16e [<ffffffff811b8b27>] ? __driver_attach+0x4f/0x79 [<ffffffff811b8ad8>] ? __driver_attach+0x0/0x79 [<ffffffff811b82cb>] ? bus_for_each_dev+0x4f/0x89 [<ffffffff811b8875>] ? driver_attach+0x1c/0x1e [<ffffffff811b7beb>] ? bus_add_driver+0xb7/0x201 [<ffffffff811b8d18>] ? driver_register+0xa8/0x128 [<ffffffff811495a3>] ? __pci_register_driver+0x53/0x8c [<ffffffffa00de054>] ? :e1000e:e1000_init_module+0x54/0x75 [<ffffffff81059f14>] ? sys_init_module+0x199c/0x1af8 [<ffffffff810ac2f4>] ? do_sync_read+0xe7/0x12d [<ffffffff8109eac4>] ? alloc_pages_current+0x0/0xc2 [<ffffffff8100c291>] ? tracesys+0xd0/0xd5 Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/203 ------------------------------------------------------------------------ On 2008-10-11T12:57:46+00:00 Thomas wrote: As far as I know the current fixes in the newest kernel only prevent this from happening to undamanged hardware. But they don't fix it, if it's already damaged. Some people from Intel and Novell were talking about developing a tool to repair it, if you have a backup of the original eeprom contents or access to an identical system. However, I don't know if that tool is already done or where you can get it from. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/204 ------------------------------------------------------------------------ On 2008-10-11T13:02:44+00:00 Michal wrote: Well, i did not backup my eeprom, my laptop is popular so i may have access to someones eeprom image to restore it. I'll just ask someone for image. Thing is i had to disable e1000e loading (i am using drivers attached to this bug) as it constantly crashes with message i pasted above and i can not boot my kernel unless i blacklist module e1000e. I hope guys will find way to fix it soon. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/205 ------------------------------------------------------------------------ On 2008-10-16T01:03:21+00:00 John wrote: It looks like the root cause of this problem has been found. Included here is the work-around for it as well as the reference to the 2.6.28-rc fix for the problem. >---------- Forwarded message ---------- >From: Steven Rostedt <rost...@goodmis.org> >Date: Wed, Oct 15, 2008 at 3:21 PM >Subject: [PATCH -stable] disable CONFIG_DYNAMIC_FTRACE due to possible >memory corruption on module unload >To: LKML <linux-ker...@vger.kernel.org>, sta...@kernel.org >Cc: Linus Torvalds <torva...@linux-foundation.org>, Andrew Morton ><a...@linux-foundation.org>, Arjan van de Ven <ar...@infradead.org>, >gre...@suse.de, jesse.brandeb...@intel.com, Thomas Gleixner ><t...@linutronix.de>, Ingo Molnar <mi...@elte.hu> > > > >While debugging the e1000e corruption bug with Intel, we discovered >today that the dynamic ftrace code in mainline is the likely source of >this bug. > >For the stable kernel we are providing the only viable fix >patch: labeling >CONFIG_DYNAMIC_FTRACE as broken. (see the patch below) > >We will follow up with a backport patch that contains the >fixes. But since >the fixes are not a one liner, the safest approach for now is to >disable the code in question. > >The cause of the bug is due to the way the current code in mainline >handles dynamic ftrace. When dynamic ftrace is turned on, it also >turns on CONFIG_FTRACE which enables the -pg config in gcc that places >a call to mcount at every function call. With just CONFIG_FTRACE this >causes a noticeable overhead. CONFIG_DYNAMIC_FTRACE works to ease this >overhead by dynamically updating the mcount call sites into nops. > >The problem arises when we trace functions and modules are unloaded. >The first time a function is called, it will call mcount and the mcount >call will call ftrace_record_ip. This records the calling site and >stores it in a preallocated hash table. Later on a daemon will >wake up and call kstop_machine and convert any mcount callers into >nops. > >The evolution of this code first tried to do this without the >kstop_machine >and used cmpxchg to update the callers as they were called. But I >was informed that this is dangerous to do on SMP machines if another >CPU is running that same code. The solution was to do this with >kstop_machine. > >We still used cmpxchg to test if the code that we are modifying is >indeed code that we expect to be before updating it - as a final >line of defense. > >But on 32bit machines, ioremapped memory and modules share the same >address space. When a module would load its code into memory >and execute >some code, that would register the function. > >On module unload, ftrace incorrectly did not zap these functions from >its hash (this was the bug). The cmpxchg could have saved us in most >cases (via luck) - but with ioremap-ed memory that was exactly >the wrong >thing to do - the results of cmpxchg on device memory are undefined. >(and will likely result in a write) > >The pending .28 ftrace tree does not have this bug anymore, as >a general push >towards more robustness of code patching, this is done >differently: we do not >use cmpxchg and we do a WARN_ON and turn the tracer off if >anything deviates >from its expected state. Furthermore, patch sites are >statically identified >during build time so there's no runtime discovery of dynamic code areas >anymore, and no room for code unmaps to cause the hash to >become out of date. > >We believe the fragility of dynamic patching has been sufficiently >addressed in the development code via the static patching >method, but further >suggestions to make it more robust are welcome. > >Signed-off-by: Steven Rostedt <srost...@goodmis.org> >Acked-by: Ingo Molnar <mi...@elte.hu> >Acked-by: Thomas Gleixner <t...@linutronix.de> >--- > kernel/trace/Kconfig | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > >Index: linux-compile.git/kernel/trace/Kconfig >=================================================================== >--- linux-compile.git.orig/kernel/trace/Kconfig 2008-10-02 >10:18:49.000000000 -0400 >+++ linux-compile.git/kernel/trace/Kconfig 2008-10-15 >17:29:34.000000000 -0400 >@@ -103,7 +103,8 @@ config CONTEXT_SWITCH_TRACER > all switching of tasks. > > config DYNAMIC_FTRACE >- bool "enable/disable ftrace tracepoints dynamically" >+ bool "enable/disable ftrace tracepoints dynamically (BROKEN)" >+ depends on BROKEN > depends on FTRACE > depends on HAVE_DYNAMIC_FTRACE > default y > >-- >To unsubscribe from this list: send the line "unsubscribe >linux-kernel" in >the body of a message to majord...@vger.kernel.org >More majordomo info at http://vger.kernel.org/majordomo-info.html >Please read the FAQ at http://www.tux.org/lkml/ > Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/212 ------------------------------------------------------------------------ On 2008-11-04T20:34:12+00:00 Jesse wrote: that cpu-stuck bug was a problem in the way the e1000e driver loops to read the NVM. part of the threads on lkml covered a fix for that issue. Please contact me directly for assistance restoring your eeprom image if you need help. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/223 ------------------------------------------------------------------------ On 2010-12-31T07:20:17+00:00 Neo wrote: Anybody can provide me the fix for the cpu-stuck fix? Also I need to get an eeprom to restore my Intel® 82573L Ethernet LAN Controller supporting Gigabit Ethernet on the motherboard D5400XS. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/263555/comments/233 ** Changed in: linux (Fedora) Importance: Unknown => Medium -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/263555 Title: [intrepid] 2.6.27 e1000e driver places Intel ICH8 and ICH9 gigE chipsets at risk Status in Linux: Fix Released Status in linux package in Ubuntu: Fix Released Status in linux-lpia package in Ubuntu: Fix Released Status in linux source package in Intrepid: Fix Released Status in linux-lpia source package in Intrepid: Fix Released Status in linux package in Fedora: Fix Released Status in linux package in Gentoo Linux: Fix Released Status in linux package in Mandriva: Fix Released Status in linux package in Suse: Fix Released Bug description: In some circumstances it appears possible for the 2.6.27-rc kernels to corrupt the NVRAM used by some Intel network parts to store data such as MAC addresses. This is limited to the new e1000e driver, and reports have only appeared from users of "82566 and 82567 based LAN parts (ich8 and ich9)" (to quote Intel). The reports seem to be isolated to laptops, but it is not clear if this is because desktop/server parts are not vulnerable, or if use cases simply increase the chances of laptop users being hit. Once this corruption has occurred, recovery may be possible via a BIOS update, but may well require replacement of the hardware. Use of Intel's IABUTIL.EXE is strongly discouraged, as it will worsen the problem to the point where the network part will no longer appear on the PCI bus. (this is a new description, the original one was based on too much guesswork. Below are the URLs originally referenced) (the driver i blacklisted in Ubuntu for 2.6.27-rc in the latest releases, so if your network is not working, it doesn't have to be damaged, but just disabled in order to prevent any accidents until this bug is solved, don't wary!) http://www.blahonga.org/~art/rant.html (search for "em0") http://www.mail-archive.com/e1000-devel@lists.sourceforge.net/msg00360.html http://www.mail-archive.com/e1000-devel@lists.sourceforge.net/msg00398.html To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/263555/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
