Re: cgroups/netfilter : kernel NULL pointer BUG at 00000038
I think this is the same bug as the one you reported recently, which has been fixed in mainline. http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a4189487da1b4f8260c6006b9dc47c3c4107a5ae On 2014/9/13 0:19, Toralf Förster wrote: > Today I observed within a 32 bit KVM machine (stable Gentoo x86 Linux) the > following : > > Sep 12 18:14:37 n22kvmclone kernel: [ 37.964900] ip_tables: (C) 2000-2006 > Netfilter Core Team > Sep 12 18:14:38 n22kvmclone kernel: [ 38.412110] nf_conntrack version 0.5.0 > (16384 buckets, 65536 max) > Sep 12 18:14:38 n22kvmclone kernel: [ 39.032978] [ cut here > ] > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033009] WARNING: CPU: 0 PID: 1632 > at kernel/cgroup.c:1034 cgroup_get+0x91/0xb0() > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033013] Modules linked in: > xt_NFLOG xt_limit ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 xt_recent > xt_conntrack nf_conntrack iptable_filter ip_tables af_packet dm_crypt dm_mod > usbhid mousedev uhci_hcd ehci_pci microcode psmouse ehci_hcd evdev usbcore > atkbd usb_common virtio_console processor button > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033104] CPU: 0 PID: 1632 Comm: > runscript.sh Not tainted 3.17.0-rc4 #18 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033107] Hardware name: QEMU > Standard PC (i440FX + PIIX, 1996), BIOS > rel-1.7.5-0-ge51488c-20140602_164612-nilsson.home.kraxel.org 04/01/2014 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033110] > f4b33e54 cc04b292 f4b33e84 cbc46d64 cc18f11c > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033119] 0660 > cc19bcc5 040a cbcb5841 cbcb5841 f56de400 f4963688 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033128] f4983cb8 f4b33e94 > cbc46da2 0009 f4b33eb0 cbcb5841 cbe59246 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033137] Call Trace: > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033163] [] > dump_stack+0x41/0x52 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033179] [] > warn_slowpath_common+0x84/0xa0 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033186] [] ? > cgroup_get+0x91/0xb0 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033191] [] ? > cgroup_get+0x91/0xb0 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033197] [] > warn_slowpath_null+0x22/0x30 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033202] [] > cgroup_get+0x91/0xb0 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033223] [] ? > kstrtoll+0x16/0x70 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033230] [] > cgroup_kn_lock_live+0x2d/0x70 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033235] [] > __cgroup_procs_write.isra.26+0x56/0x240 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033240] [] ? > __cgroup_procs_write.isra.26+0x240/0x240 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033245] [] > cgroup_tasks_write+0x17/0x20 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033250] [] > cgroup_file_write+0x45/0x140 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033256] [] ? > kill_css+0xd0/0xd0 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033275] [] > kernfs_fop_write+0xd1/0x160 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033281] [] ? > kernfs_vma_page_mkwrite+0x90/0x90 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033291] [] > vfs_write+0x9d/0x1e0 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033297] [] ? > kernfs_vma_page_mkwrite+0x90/0x90 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033306] [] ? > __fdget+0x12/0x20 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033311] [] > SyS_write+0x52/0xa0 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033321] [] > sysenter_do_call+0x12/0x12 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.033325] ---[ end trace > f3513225d53cf0f3 ]--- > Sep 12 18:14:38 n22kvmclone kernel: [ 39.036277] BUG: unable to handle > kernel NULL pointer dereference at 0038 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] IP: [] > cgroup_put+0xc/0x90 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] *pde = > Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] Oops: [#1] SMP > Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] Modules linked in: > xt_NFLOG xt_limit ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 xt_recent > xt_conntrack nf_conntrack iptable_filter ip_tables af_packet dm_crypt dm_mod > usbhid mousedev uhci_hcd ehci_pci microcode psmouse ehci_hcd evdev usbcore > atkbd usb_common virtio_console processor button > Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] CPU: 0 PID: 1632 Comm: > runscript.sh Tainted: GW 3.17.0-rc4 #18 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] Hardware name: QEMU > Standard PC (i440FX + PIIX, 1996), BIOS > rel-1.7.5-0-ge51488c-20140602_164612-nilsson.home.kraxel.org 04/01/2014 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] task: f6216390 ti: > f4b32000 task.ti: f4b32000 > Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] EIP: 0060:[] > EFLAGS: 00010282 CPU: 0 > Sep 12 18:14:38 n22kvmclone
Re: cgroups/netfilter : kernel NULL pointer BUG at 00000038
I think this is the same bug as the one you reported recently, which has been fixed in mainline. http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=a4189487da1b4f8260c6006b9dc47c3c4107a5ae On 2014/9/13 0:19, Toralf Förster wrote: Today I observed within a 32 bit KVM machine (stable Gentoo x86 Linux) the following : Sep 12 18:14:37 n22kvmclone kernel: [ 37.964900] ip_tables: (C) 2000-2006 Netfilter Core Team Sep 12 18:14:38 n22kvmclone kernel: [ 38.412110] nf_conntrack version 0.5.0 (16384 buckets, 65536 max) Sep 12 18:14:38 n22kvmclone kernel: [ 39.032978] [ cut here ] Sep 12 18:14:38 n22kvmclone kernel: [ 39.033009] WARNING: CPU: 0 PID: 1632 at kernel/cgroup.c:1034 cgroup_get+0x91/0xb0() Sep 12 18:14:38 n22kvmclone kernel: [ 39.033013] Modules linked in: xt_NFLOG xt_limit ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 xt_recent xt_conntrack nf_conntrack iptable_filter ip_tables af_packet dm_crypt dm_mod usbhid mousedev uhci_hcd ehci_pci microcode psmouse ehci_hcd evdev usbcore atkbd usb_common virtio_console processor button Sep 12 18:14:38 n22kvmclone kernel: [ 39.033104] CPU: 0 PID: 1632 Comm: runscript.sh Not tainted 3.17.0-rc4 #18 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033107] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.7.5-0-ge51488c-20140602_164612-nilsson.home.kraxel.org 04/01/2014 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033110] f4b33e54 cc04b292 f4b33e84 cbc46d64 cc18f11c Sep 12 18:14:38 n22kvmclone kernel: [ 39.033119] 0660 cc19bcc5 040a cbcb5841 cbcb5841 f56de400 f4963688 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033128] f4983cb8 f4b33e94 cbc46da2 0009 f4b33eb0 cbcb5841 cbe59246 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033137] Call Trace: Sep 12 18:14:38 n22kvmclone kernel: [ 39.033163] [cc04b292] dump_stack+0x41/0x52 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033179] [cbc46d64] warn_slowpath_common+0x84/0xa0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033186] [cbcb5841] ? cgroup_get+0x91/0xb0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033191] [cbcb5841] ? cgroup_get+0x91/0xb0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033197] [cbc46da2] warn_slowpath_null+0x22/0x30 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033202] [cbcb5841] cgroup_get+0x91/0xb0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033223] [cbe59246] ? kstrtoll+0x16/0x70 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033230] [cbcb5d3d] cgroup_kn_lock_live+0x2d/0x70 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033235] [cbcb8386] __cgroup_procs_write.isra.26+0x56/0x240 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033240] [cbcb8570] ? __cgroup_procs_write.isra.26+0x240/0x240 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033245] [cbcb8587] cgroup_tasks_write+0x17/0x20 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033250] [cbcb5645] cgroup_file_write+0x45/0x140 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033256] [cbcb5600] ? kill_css+0xd0/0xd0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033275] [cbda8d21] kernfs_fop_write+0xd1/0x160 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033281] [cbda8c50] ? kernfs_vma_page_mkwrite+0x90/0x90 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033291] [cbd49bbd] vfs_write+0x9d/0x1e0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033297] [cbda8c50] ? kernfs_vma_page_mkwrite+0x90/0x90 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033306] [cbd64522] ? __fdget+0x12/0x20 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033311] [cbd4a0b2] SyS_write+0x52/0xa0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033321] [cc0522ab] sysenter_do_call+0x12/0x12 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033325] ---[ end trace f3513225d53cf0f3 ]--- Sep 12 18:14:38 n22kvmclone kernel: [ 39.036277] BUG: unable to handle kernel NULL pointer dereference at 0038 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] IP: [cbcb5c2c] cgroup_put+0xc/0x90 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] *pde = Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] Oops: [#1] SMP Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] Modules linked in: xt_NFLOG xt_limit ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 xt_recent xt_conntrack nf_conntrack iptable_filter ip_tables af_packet dm_crypt dm_mod usbhid mousedev uhci_hcd ehci_pci microcode psmouse ehci_hcd evdev usbcore atkbd usb_common virtio_console processor button Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] CPU: 0 PID: 1632 Comm: runscript.sh Tainted: GW 3.17.0-rc4 #18 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.7.5-0-ge51488c-20140602_164612-nilsson.home.kraxel.org 04/01/2014 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] task: f6216390 ti: f4b32000 task.ti: f4b32000 Sep 12 18:14:38 n22kvmclone kernel: [
cgroups/netfilter : kernel NULL pointer BUG at 00000038
Today I observed within a 32 bit KVM machine (stable Gentoo x86 Linux) the following : Sep 12 18:14:37 n22kvmclone kernel: [ 37.964900] ip_tables: (C) 2000-2006 Netfilter Core Team Sep 12 18:14:38 n22kvmclone kernel: [ 38.412110] nf_conntrack version 0.5.0 (16384 buckets, 65536 max) Sep 12 18:14:38 n22kvmclone kernel: [ 39.032978] [ cut here ] Sep 12 18:14:38 n22kvmclone kernel: [ 39.033009] WARNING: CPU: 0 PID: 1632 at kernel/cgroup.c:1034 cgroup_get+0x91/0xb0() Sep 12 18:14:38 n22kvmclone kernel: [ 39.033013] Modules linked in: xt_NFLOG xt_limit ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 xt_recent xt_conntrack nf_conntrack iptable_filter ip_tables af_packet dm_crypt dm_mod usbhid mousedev uhci_hcd ehci_pci microcode psmouse ehci_hcd evdev usbcore atkbd usb_common virtio_console processor button Sep 12 18:14:38 n22kvmclone kernel: [ 39.033104] CPU: 0 PID: 1632 Comm: runscript.sh Not tainted 3.17.0-rc4 #18 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033107] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.7.5-0-ge51488c-20140602_164612-nilsson.home.kraxel.org 04/01/2014 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033110] f4b33e54 cc04b292 f4b33e84 cbc46d64 cc18f11c Sep 12 18:14:38 n22kvmclone kernel: [ 39.033119] 0660 cc19bcc5 040a cbcb5841 cbcb5841 f56de400 f4963688 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033128] f4983cb8 f4b33e94 cbc46da2 0009 f4b33eb0 cbcb5841 cbe59246 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033137] Call Trace: Sep 12 18:14:38 n22kvmclone kernel: [ 39.033163] [] dump_stack+0x41/0x52 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033179] [] warn_slowpath_common+0x84/0xa0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033186] [] ? cgroup_get+0x91/0xb0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033191] [] ? cgroup_get+0x91/0xb0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033197] [] warn_slowpath_null+0x22/0x30 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033202] [] cgroup_get+0x91/0xb0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033223] [] ? kstrtoll+0x16/0x70 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033230] [] cgroup_kn_lock_live+0x2d/0x70 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033235] [] __cgroup_procs_write.isra.26+0x56/0x240 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033240] [] ? __cgroup_procs_write.isra.26+0x240/0x240 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033245] [] cgroup_tasks_write+0x17/0x20 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033250] [] cgroup_file_write+0x45/0x140 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033256] [] ? kill_css+0xd0/0xd0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033275] [] kernfs_fop_write+0xd1/0x160 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033281] [] ? kernfs_vma_page_mkwrite+0x90/0x90 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033291] [] vfs_write+0x9d/0x1e0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033297] [] ? kernfs_vma_page_mkwrite+0x90/0x90 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033306] [] ? __fdget+0x12/0x20 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033311] [] SyS_write+0x52/0xa0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033321] [] sysenter_do_call+0x12/0x12 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033325] ---[ end trace f3513225d53cf0f3 ]--- Sep 12 18:14:38 n22kvmclone kernel: [ 39.036277] BUG: unable to handle kernel NULL pointer dereference at 0038 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] IP: [] cgroup_put+0xc/0x90 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] *pde = Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] Oops: [#1] SMP Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] Modules linked in: xt_NFLOG xt_limit ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 xt_recent xt_conntrack nf_conntrack iptable_filter ip_tables af_packet dm_crypt dm_mod usbhid mousedev uhci_hcd ehci_pci microcode psmouse ehci_hcd evdev usbcore atkbd usb_common virtio_console processor button Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] CPU: 0 PID: 1632 Comm: runscript.sh Tainted: GW 3.17.0-rc4 #18 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.7.5-0-ge51488c-20140602_164612-nilsson.home.kraxel.org 04/01/2014 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] task: f6216390 ti: f4b32000 task.ti: f4b32000 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] EIP: 0060:[] EFLAGS: 00010282 CPU: 0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] EIP is at cgroup_put+0xc/0x90 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] EAX: EBX: f4963688 ECX: 0042621a EDX: 0008 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] ESI: EDI: f4983cb8 EBP: f4b33ea0 ESP: f4b33e8c Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] CR0: 8005003b CR2:
cgroups/netfilter : kernel NULL pointer BUG at 00000038
Today I observed within a 32 bit KVM machine (stable Gentoo x86 Linux) the following : Sep 12 18:14:37 n22kvmclone kernel: [ 37.964900] ip_tables: (C) 2000-2006 Netfilter Core Team Sep 12 18:14:38 n22kvmclone kernel: [ 38.412110] nf_conntrack version 0.5.0 (16384 buckets, 65536 max) Sep 12 18:14:38 n22kvmclone kernel: [ 39.032978] [ cut here ] Sep 12 18:14:38 n22kvmclone kernel: [ 39.033009] WARNING: CPU: 0 PID: 1632 at kernel/cgroup.c:1034 cgroup_get+0x91/0xb0() Sep 12 18:14:38 n22kvmclone kernel: [ 39.033013] Modules linked in: xt_NFLOG xt_limit ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 xt_recent xt_conntrack nf_conntrack iptable_filter ip_tables af_packet dm_crypt dm_mod usbhid mousedev uhci_hcd ehci_pci microcode psmouse ehci_hcd evdev usbcore atkbd usb_common virtio_console processor button Sep 12 18:14:38 n22kvmclone kernel: [ 39.033104] CPU: 0 PID: 1632 Comm: runscript.sh Not tainted 3.17.0-rc4 #18 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033107] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.7.5-0-ge51488c-20140602_164612-nilsson.home.kraxel.org 04/01/2014 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033110] f4b33e54 cc04b292 f4b33e84 cbc46d64 cc18f11c Sep 12 18:14:38 n22kvmclone kernel: [ 39.033119] 0660 cc19bcc5 040a cbcb5841 cbcb5841 f56de400 f4963688 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033128] f4983cb8 f4b33e94 cbc46da2 0009 f4b33eb0 cbcb5841 cbe59246 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033137] Call Trace: Sep 12 18:14:38 n22kvmclone kernel: [ 39.033163] [cc04b292] dump_stack+0x41/0x52 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033179] [cbc46d64] warn_slowpath_common+0x84/0xa0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033186] [cbcb5841] ? cgroup_get+0x91/0xb0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033191] [cbcb5841] ? cgroup_get+0x91/0xb0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033197] [cbc46da2] warn_slowpath_null+0x22/0x30 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033202] [cbcb5841] cgroup_get+0x91/0xb0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033223] [cbe59246] ? kstrtoll+0x16/0x70 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033230] [cbcb5d3d] cgroup_kn_lock_live+0x2d/0x70 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033235] [cbcb8386] __cgroup_procs_write.isra.26+0x56/0x240 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033240] [cbcb8570] ? __cgroup_procs_write.isra.26+0x240/0x240 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033245] [cbcb8587] cgroup_tasks_write+0x17/0x20 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033250] [cbcb5645] cgroup_file_write+0x45/0x140 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033256] [cbcb5600] ? kill_css+0xd0/0xd0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033275] [cbda8d21] kernfs_fop_write+0xd1/0x160 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033281] [cbda8c50] ? kernfs_vma_page_mkwrite+0x90/0x90 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033291] [cbd49bbd] vfs_write+0x9d/0x1e0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033297] [cbda8c50] ? kernfs_vma_page_mkwrite+0x90/0x90 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033306] [cbd64522] ? __fdget+0x12/0x20 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033311] [cbd4a0b2] SyS_write+0x52/0xa0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033321] [cc0522ab] sysenter_do_call+0x12/0x12 Sep 12 18:14:38 n22kvmclone kernel: [ 39.033325] ---[ end trace f3513225d53cf0f3 ]--- Sep 12 18:14:38 n22kvmclone kernel: [ 39.036277] BUG: unable to handle kernel NULL pointer dereference at 0038 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] IP: [cbcb5c2c] cgroup_put+0xc/0x90 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] *pde = Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] Oops: [#1] SMP Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] Modules linked in: xt_NFLOG xt_limit ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 xt_recent xt_conntrack nf_conntrack iptable_filter ip_tables af_packet dm_crypt dm_mod usbhid mousedev uhci_hcd ehci_pci microcode psmouse ehci_hcd evdev usbcore atkbd usb_common virtio_console processor button Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] CPU: 0 PID: 1632 Comm: runscript.sh Tainted: GW 3.17.0-rc4 #18 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.7.5-0-ge51488c-20140602_164612-nilsson.home.kraxel.org 04/01/2014 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] task: f6216390 ti: f4b32000 task.ti: f4b32000 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] EIP: 0060:[cbcb5c2c] EFLAGS: 00010282 CPU: 0 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] EIP is at cgroup_put+0xc/0x90 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] EAX: EBX: f4963688 ECX: 0042621a EDX: 0008 Sep 12 18:14:38 n22kvmclone kernel: [ 39.037026] ESI: EDI: f4983cb8 EBP: f4b33ea0 ESP:
