On Tue, Aug 2, 2011 at 3:22 PM, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > On Tue, 2 Aug 2011 15:09:57 +0800 Xiaotian Feng <xtfeng@xxxxxxxxx> wrote: > >> __ __I'm hitting the kernel BUG at mm/vmscan.c:1114 twice, each time I >> was trying to build my kernel. The photo of crash screen and my config >> is attached. > > hm, now why has that started happening? > > Perhaps you could apply this debug patch, see if we can narrow it down? > I will try it then, but it isn't very reproducible :( But my system hung after some list corruption warnings... I hit the corruption 4 times... So, Dozens of corruption warnings followed after this one: [ 3641.495875] ------------[ cut here ]------------ [ 3641.495885] WARNING: at lib/list_debug.c:53 __list_del_entry+0xa1/0xd0() [ 3641.495888] Hardware name: 42424XC [ 3641.495891] list_del corruption. prev->next should be ffffea00000a6c20, but was ffff880033edde70 [ 3641.495893] Modules linked in: ip6table_filter ip6_tables ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp iptable_filter ip_tables x_tables bridge stp binfmt_misc parport_pc ppdev snd_hda_codec_conexant snd_hda_intel snd_hda_codec thinkpad_acpi arc4 snd_hwdep snd_pcm snd_seq_midi snd_rawmidi cryptd aes_x86_64 iwlagn snd_seq_midi_event aes_generic snd_seq snd_timer snd_seq_device mac80211 btusb bluetooth snd cfg80211 snd_page_alloc i915 uvcvideo videodev drm_kms_helper psmouse v4l2_compat_ioctl32 drm tpm_tis tpm lp soundcore tpm_bios nvram i2c_algo_bit serio_raw joydev parport video usbhid hid ahci libahci firewire_ohci firewire_core crc_itu_t sdhci_pci sdhci e1000e [ 3641.495987] Pid: 22709, comm: skype Tainted: G W 3.0.0+ #23 [ 3641.495989] Call Trace: [ 3641.495996] [<ffffffff8106db3f>] warn_slowpath_common+0x7f/0xc0 [ 3641.496001] [<ffffffff8106dc36>] warn_slowpath_fmt+0x46/0x50 [ 3641.496006] [<ffffffff81332a71>] __list_del_entry+0xa1/0xd0 [ 3641.496010] [<ffffffff81332ab1>] list_del+0x11/0x40 [ 3641.496015] [<ffffffff8117a212>] __slab_free+0x362/0x3d0 [ 3641.496020] [<ffffffff81519ac9>] ? __sk_free+0xf9/0x1d0 [ 3641.496025] [<ffffffff8117b767>] ? kmem_cache_free+0x97/0x220 [ 3641.496028] [<ffffffff81519ac9>] ? __sk_free+0xf9/0x1d0 [ 3641.496032] [<ffffffff81519ac9>] ? __sk_free+0xf9/0x1d0 [ 3641.496036] [<ffffffff8117b8df>] kmem_cache_free+0x20f/0x220 [ 3641.496040] [<ffffffff81519ac9>] __sk_free+0xf9/0x1d0 [ 3641.496044] [<ffffffff81519c35>] sk_free+0x25/0x30 [ 3641.496049] [<ffffffff81576ac9>] tcp_close+0x239/0x440 [ 3641.496054] [<ffffffff815a10ef>] inet_release+0xcf/0x150 [ 3641.496058] [<ffffffff815a1042>] ? inet_release+0x22/0x150 [ 3641.496063] [<ffffffff81513f19>] sock_release+0x29/0x90 [ 3641.496067] [<ffffffff81513f97>] sock_close+0x17/0x30 [ 3641.496072] [<ffffffff8119151d>] fput+0xfd/0x240 [ 3641.496077] [<ffffffff8118c9b6>] filp_close+0x66/0x90 [ 3641.496081] [<ffffffff8118d412>] sys_close+0xc2/0x1a0 [ 3641.496087] [<ffffffff81652b60>] sysenter_dispatch+0x7/0x33 [ 3641.496093] [<ffffffff8132c8ae>] ? trace_hardirqs_on_thunk+0x3a/0x3f And after I reboot my system, trying to recover building my kernel, the system hung again, and I got following warnings: [ 1220.468089] ------------[ cut here ]------------ [ 1220.468099] WARNING: at lib/list_debug.c:56 __list_del_entry+0x82/0xd0() [ 1220.468102] Hardware name: 42424XC [ 1220.468104] list_del corruption. next->prev should be ffffea0000e069a0, but was ffff880100216c78 [ 1220.468106] Modules linked in: ip6table_filter ip6_tables ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle xt_tcpudp iptable_filter ip_tables x_tables binfmt_misc bridge stp parport_pc ppdev snd_hda_codec_conexant snd_hda_intel snd_hda_codec thinkpad_acpi snd_hwdep snd_pcm i915 snd_seq_midi snd_rawmidi arc4 cryptd snd_seq_midi_event aes_x86_64 snd_seq drm_kms_helper iwlagn snd_timer aes_generic drm snd_seq_device mac80211 psmouse uvcvideo videodev snd v4l2_compat_ioctl32 soundcore snd_page_alloc serio_raw i2c_algo_bit btusb tpm_tis tpm tpm_bios video cfg80211 bluetooth nvram lp joydev parport usbhid hid ahci libahci firewire_ohci firewire_core e1000e sdhci_pci sdhci crc_itu_t [ 1220.468185] Pid: 1168, comm: Xorg Tainted: G W 3.0.0+ #23 [ 1220.468188] Call Trace: [ 1220.468190] <IRQ> [<ffffffff8106db3f>] warn_slowpath_common+0x7f/0xc0 [ 1220.468201] [<ffffffff8106dc36>] warn_slowpath_fmt+0x46/0x50 [ 1220.468206] [<ffffffff81332a52>] __list_del_entry+0x82/0xd0 [ 1220.468210] [<ffffffff81332ab1>] list_del+0x11/0x40 [ 1220.468216] [<ffffffff8117a212>] __slab_free+0x362/0x3d0 [ 1220.468222] [<ffffffff811c6606>] ? bvec_free_bs+0x26/0x40 [ 1220.468226] [<ffffffff8117b767>] ? kmem_cache_free+0x97/0x220 [ 1220.468230] [<ffffffff811c6606>] ? bvec_free_bs+0x26/0x40 [ 1220.468234] [<ffffffff811c6606>] ? bvec_free_bs+0x26/0x40 [ 1220.468239] [<ffffffff8117b8df>] kmem_cache_free+0x20f/0x220 [ 1220.468243] [<ffffffff811c6606>] bvec_free_bs+0x26/0x40 [ 1220.468247] [<ffffffff811c6654>] bio_free+0x34/0x70 [ 1220.468250] [<ffffffff811c66a5>] bio_fs_de So is it possible that my previous BUG is triggered by slab list corruption? -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>