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<4C2305F9.5010306@gmail.com> Date: Thu, 24 Jun 2010 15:45:07 +0800 Message-ID: Subject: Re: 2.6.35-rc3 -- kernel BUG at mm/vmalloc.c:216! - invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC From: Xiaotian Feng To: Tejun Heo Cc: Miles Lane , LKML , Alexander Viro , Greg Kroah-Hartman , Andrew Morton , Cliff Wickman Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2718 Lines: 59 On Thu, Jun 24, 2010 at 3:15 PM, Tejun Heo wrote: > Hello, > > On 06/24/2010 07:22 AM, Xiaotian Feng wrote: >> I can reproduce it with the same ... >> >>> [ 1046.984453] kernel BUG at mm/vmalloc.c:216! >>> [ 1046.984463] invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC >>> [ 1046.984484] last sysfs file: /sys/devices/system/cpu/cpu1/crash_notes >>> [ 1046.984495] Modules linked in: aes_i586 aes_generic binfmt_misc >>> ipv6 snd_hda_codec_realtek arc4 snd_hda_intel ecb snd_hda_codec ath9k >>> snd_hwdep snd_pcm_oss ath9k_common snd_mixer_oss ath9k_hw snd_pcm >>> snd_seq_dummy ath snd_seq_oss snd_seq_midi snd_rawmidi mac80211 >>> snd_seq_midi_event snd_seq snd_timer cfg80211 snd_seq_device rtc_cmos >>> snd rtc_core rtc_lib snd_page_alloc rng_core led_class processor >>> battery ac sg uhci_hcd ehci_hcd sd_mod usbcore thermal >>> [ 1046.984668] >>> [ 1046.984680] Pid: 15038, comm: head Not tainted 2.6.35-rc3 #1 1000HE/1000HE >>> [ 1046.984691] EIP: 0060:[] EFLAGS: 00010246 CPU: 0 >>> [ 1046.984705] EIP is at vmalloc_to_page+0x16/0xd1 >>> [ 1046.984714] EAX: 00000000 EBX: c1527000 ECX: c6e0b2a8 EDX: f7ffe000 >>> [ 1046.984725] ESI: c6e0b2a8 EDI: c133234c EBP: d6645f20 ESP: d6645f18 >>> [ 1046.984736] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 >>> [ 1046.984748] Process head (pid: 15038, ti=d6645000 task=ca6c6900 >>> task.ti=d6645000) >>> [ 1046.984757] Stack: >>> [ 1046.984764] d6644000 c6e0341c d6645f28 c10a3423 d6645f34 c1204bf8 >>> c1204bdc d6645f44 >>> [ 1046.984800] <0> c1201ebc c93ea400 f70a12c0 d6645f70 c10e594f >>> c112b2df 00002000 bfa194ec >>> [ 1046.984840] <0> 00000000 c93ea414 c133234c e07cd600 bfa194ec >>> c10e58c1 d6645f8c c10a6223 >>> [ 1046.984883] Call Trace: >>> [ 1046.984902] [] ? per_cpu_ptr_to_phys+0x5b/0x74 >>> [ 1046.984920] [] ? show_crash_notes+0x1c/0x30 > > It's probably the same bug Cliff Wickman reported. > per_cpu_ptr_to_phys() was using wrong first chunk match logic which > ends up passing wrong addresses to vmalloc_to_page(). I have the > following fix patch queued in percpu#for-linus branch and was waiting > for Linus to come back. > > http://git.kernel.org/?p=linux/kernel/git/tj/percpu.git;a=commitdiff_plain;h=9983b6f0cf8263e51bcf4c8a9dc0c1ef175b3c60;hp=a92d3ff9e5dbd958d8008a3e7a573e988e370ca3 > > Can you please verify the above patch fixes the problem? Yes, that patch fixes the problem on my box, thanks. > > Thanks. > > -- > tejun > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/