[Kernel-packages] [Bug 1748671] Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000009
I've encountered the same error, on Mint 19 - based on Ubuntu 18.04 - with kernel 4.19.0-041900rc4-generic. I encountered the problem while trying to re-enable my touchpad after resume from sleep - on the infamous Lenovo X1 Carbon Sixth Generation. -- 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/1748671 Title: BUG: unable to handle kernel NULL pointer dereference at 0009 Status in linux package in Ubuntu: Triaged Status in linux source package in Xenial: Fix Released Bug description: Got this bug/oops while running with the linux-image-4.4.0-113-generic (4.4.0-113.136) kernel from -proposed: BUG: unable to handle kernel NULL pointer dereference at 0009 IP: [] csum_and_copy_from_iter+0x55/0x4c0 PGD 0 Oops: [#1] SMP Modules linked in: ctr ccm veth xt_CHECKSUM iptable_mangle xt_comment ec_sys bridge stp llc nf_log_ipv6 ip6table_filter ip6t_MASQUERADE nf_nat_masquerade_ipv6 ip6table_nat nf_nat_ipv6 ip6_tables nf_log_ip snd ghash_clmulni_intel soundcore r8169 psmouse input_leds cfg80211 rtsx_pci mii vhost_net vhost media ahci libahci macvtap macvlan mei_me mei kvm_intel kvm irqbypass tpm_crb i2c_hid intel_lpss_acpi inte CPU: 2 PID: 3997 Comm: dnsmasq Tainted: PW O4.4.0-113-generic #136-Ubuntu Hardware name: System76Lemur/Lemur, BIOS 5.12 02/17/2017 task: 880830269e00 ti: 880035c44000 task.ti: 880035c44000 RIP: 0010:[] [] csum_and_copy_from_iter+0x55/0x4c0 RSP: 0018:880035c47a18 EFLAGS: 00010246 RAX: ab729fd0 RBX: 001c RCX: 880035c47e98 RDX: 880035c47a94 RSI: 001c RDI: 8807ef1a7424 RBP: 880035c47a80 R08: R09: 8807ef1a7424 R10: 8807ef1a7424 R11: 8807ef1a7400 R12: 880035c47e98 R13: R14: 00ffabea6920 R15: 0001 FS: 7ff2b234d880() GS:88086ed0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 0009 CR3: 35c1e000 CR4: 00360670 Stack: 88084e001600 ab72d1d7 880830f18500 880035c47aaf 880035c47a94 01c0 b0f4001fc4815eea 001c 880830f18500 880035c47d30 Call Trace: [] ? __alloc_skb+0x87/0x1f0 [] ip_generic_getfrag+0x56/0xe0 [] raw_getfrag+0xaf/0x100 [] __ip_append_data.isra.45+0x98a/0xb90 [] ? raw_recvmsg+0x1c0/0x1c0 [] ? raw_recvmsg+0x1c0/0x1c0 [] ip_append_data.part.46+0x7a/0xe0 [] ip_append_data+0x34/0x40 [] raw_sendmsg+0x724/0xc00 [] ? aa_sk_perm+0x70/0x210 [] ? aa_sock_msg_perm+0x61/0x150 [] inet_sendmsg+0x6b/0xa0 [] sock_sendmsg+0x3e/0x50 [] SYSC_sendto+0x101/0x190 [] ? sock_setsockopt+0x180/0x830 [] ? apparmor_socket_setsockopt+0x22/0x30 [] SyS_sendto+0xe/0x10 [] entry_SYSCALL_64_fastpath+0x1c/0x93 Code: f3 48 0f 47 de 48 85 db 0f 84 8b 01 00 00 8b 02 49 89 f9 49 89 cc 4c 8b 71 08 89 45 c4 8b 01 a8 04 0f 85 79 01 00 00 4c 8b 79 18 <4d> 8b 6f 08 4d 29 f5 49 39 dd 4c 0f 47 eb a8 02 0f 85 36 02 00 RIP [] csum_and_copy_from_iter+0x55/0x4c0 RSP CR2: 0009 ---[ end trace bdd9157c94a456b6 ]--- The trigger is when I start an artful lxd container and it tries to get an IPv4/IPv6. Oddly enough, the same thing works perfectly for my xenial container. My lxd-bridge has dnsmasq contained by Apparmor which is non standard but always worked flawlessly. I can trigger the bug 100% of the time so validating any tentative fix should be easy. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-113-generic 4.4.0-113.136 ProcVersionSignature: Ubuntu 4.4.0-112.135-generic 4.4.98 Uname: Linux 4.4.0-112-generic x86_64 NonfreeKernelModules: zfs zunicode zcommon znvpair zavl ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: simon 7244 F pulseaudio CurrentDesktop: Unity CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read kernel buffer failed: Operation not permitted Date: Sat Feb 10 16:45:26 2018 HibernationDevice: RESUME=/dev/mapper/nvme0n1p3_crypt InstallationDate: Installed on 2016-12-06 (431 days ago) InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Beta amd64 (20161206) MachineType: System76 Lemur ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-112-generic.efi.signed root=UUID=49432620-38ed-44bd-912a-7bc51eec3a35 ro quiet splash possible_cpus=4 nmi_watchdog=0 kaslr vsyscall=none vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-112-generic N/A linux-backports-modules-4.4.0-112-generic N/A linux-firmware 1.157.16 RfKill: Error: [Errno 2] No such
[Kernel-packages] [Bug 1748671] Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000009
This bug was fixed in the package linux - 4.4.0-116.140 --- linux (4.4.0-116.140) xenial; urgency=medium * linux: 4.4.0-116.140 -proposed tracker (LP: #1748990) * BUG: unable to handle kernel NULL pointer dereference at 0009 (LP: #1748671) - SAUCE: net: ipv4: fix for a race condition in raw_sendmsg -- fix backport linux (4.4.0-115.139) xenial; urgency=medium * linux: 4.4.0-115.138 -proposed tracker (LP: #1748745) * CVE-2017-5715 (Spectre v2 Intel) - Revert "UBUNTU: SAUCE: turn off IBPB when full retpoline is present" - SAUCE: turn off IBRS when full retpoline is present - [Packaging] retpoline files must be sorted - [Packaging] pull in retpoline files linux (4.4.0-114.137) xenial; urgency=medium * linux: 4.4.0-114.137 -proposed tracker (LP: #1748484) * ALSA backport missing NVIDIA GPU codec IDs to patch table to Ubuntu 16.04 LTS Kernel (LP: #1744117) - ALSA: hda - Add missing NVIDIA GPU codec IDs to patch table * Shutdown hang on 16.04 with iscsi targets (LP: #1569925) - scsi: libiscsi: Allow sd_shutdown on bad transport * libata: apply MAX_SEC_1024 to all LITEON EP1 series devices (LP: #1743053) - libata: apply MAX_SEC_1024 to all LITEON EP1 series devices * KVM patches for s390x to provide facility bits 81 (ppa15) and 82 (bpb) (LP: #1747090) - KVM: s390: wire up bpb feature - KVM: s390: Enable all facility bits that are known good for passthrough * CVE-2017-5715 (Spectre v2 Intel) - SAUCE: drop lingering gmb() macro - x86/feature: Enable the x86 feature to control Speculation - x86/feature: Report presence of IBPB and IBRS control - x86/enter: MACROS to set/clear IBRS and set IBPB - x86/enter: Use IBRS on syscall and interrupts - x86/idle: Disable IBRS entering idle and enable it on wakeup - x86/idle: Disable IBRS when offlining cpu and re-enable on wakeup - x86/mm: Set IBPB upon context switch - x86/mm: Only set IBPB when the new thread cannot ptrace current thread - x86/kvm: add MSR_IA32_SPEC_CTRL and MSR_IA32_PRED_CMD to kvm - x86/kvm: Set IBPB when switching VM - x86/kvm: Toggle IBRS on VM entry and exit - x86/spec_ctrl: Add sysctl knobs to enable/disable SPEC_CTRL feature - x86/spec_ctrl: Add lock to serialize changes to ibrs and ibpb control - x86/cpu/amd, kvm: Satisfy guest kernel reads of IC_CFG MSR - x86/cpu/AMD: Add speculative control support for AMD - x86/microcode: Extend post microcode reload to support IBPB feature - KVM: SVM: Do not intercept new speculative control MSRs - x86/svm: Set IBRS value on VM entry and exit - x86/svm: Set IBPB when running a different VCPU - KVM: x86: Add speculative control CPUID support for guests - SAUCE: Fix spec_ctrl support in KVM - SAUCE: turn off IBPB when full retpoline is present linux (4.4.0-113.136) xenial; urgency=low * linux: 4.4.0-113.136 -proposed tracker (LP: #1746936) [ Stefan Bader ] * Missing install-time driver for QLogic QED 25/40/100Gb Ethernet NIC (LP: #1743638) - [d-i] Add qede to nic-modules udeb * CVE-2017-5753 (Spectre v1 Intel) - x86/cpu/AMD: Make the LFENCE instruction serialized - x86/cpu/AMD: Remove now unused definition of MFENCE_RDTSC feature - SAUCE: reinstate MFENCE_RDTSC feature definition - locking/barriers: introduce new observable speculation barrier - bpf: prevent speculative execution in eBPF interpreter - x86, bpf, jit: prevent speculative execution when JIT is enabled - SAUCE: FIX: x86, bpf, jit: prevent speculative execution when JIT is enabled - carl9170: prevent speculative execution - qla2xxx: prevent speculative execution - Thermal/int340x: prevent speculative execution - ipv4: prevent speculative execution - ipv6: prevent speculative execution - fs: prevent speculative execution - net: mpls: prevent speculative execution - udf: prevent speculative execution - userns: prevent speculative execution - SAUCE: claim mitigation via observable speculation barrier - SAUCE: powerpc: add osb barrier - SAUCE: s390/spinlock: add osb memory barrier - SAUCE: arm64: no osb() implementation yet - SAUCE: arm: no osb() implementation yet * CVE-2017-5715 (Spectre v2 retpoline) - x86/cpuid: Provide get_scattered_cpuid_leaf() - x86/cpu: Factor out application of forced CPU caps - x86/cpufeatures: Make CPU bugs sticky - x86/cpufeatures: Add X86_BUG_CPU_INSECURE - x86/cpu, x86/pti: Do not enable PTI on AMD processors - x86/pti: Rename BUG_CPU_INSECURE to BUG_CPU_MELTDOWN - x86/cpufeatures: Add X86_BUG_SPECTRE_V[12] - x86/cpu: Merge bugs.c and bugs_64.c - sysfs/cpu: Add vulnerability folder - x86/cpu: Implement CPU vulnerabilites sysfs functions - x86/alternatives: Add missing '\n' at end of ALTERNATIVE inline asm - x86/mm/32: Move setup_clear_cpu_cap(X86_FEATURE_PCID) earlier -
[Kernel-packages] [Bug 1748671] Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000009
** Changed in: linux (Ubuntu Xenial) Status: Triaged => Fix Committed -- 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/1748671 Title: BUG: unable to handle kernel NULL pointer dereference at 0009 Status in linux package in Ubuntu: Triaged Status in linux source package in Xenial: Fix Committed Bug description: Got this bug/oops while running with the linux-image-4.4.0-113-generic (4.4.0-113.136) kernel from -proposed: BUG: unable to handle kernel NULL pointer dereference at 0009 IP: [] csum_and_copy_from_iter+0x55/0x4c0 PGD 0 Oops: [#1] SMP Modules linked in: ctr ccm veth xt_CHECKSUM iptable_mangle xt_comment ec_sys bridge stp llc nf_log_ipv6 ip6table_filter ip6t_MASQUERADE nf_nat_masquerade_ipv6 ip6table_nat nf_nat_ipv6 ip6_tables nf_log_ip snd ghash_clmulni_intel soundcore r8169 psmouse input_leds cfg80211 rtsx_pci mii vhost_net vhost media ahci libahci macvtap macvlan mei_me mei kvm_intel kvm irqbypass tpm_crb i2c_hid intel_lpss_acpi inte CPU: 2 PID: 3997 Comm: dnsmasq Tainted: PW O4.4.0-113-generic #136-Ubuntu Hardware name: System76Lemur/Lemur, BIOS 5.12 02/17/2017 task: 880830269e00 ti: 880035c44000 task.ti: 880035c44000 RIP: 0010:[] [] csum_and_copy_from_iter+0x55/0x4c0 RSP: 0018:880035c47a18 EFLAGS: 00010246 RAX: ab729fd0 RBX: 001c RCX: 880035c47e98 RDX: 880035c47a94 RSI: 001c RDI: 8807ef1a7424 RBP: 880035c47a80 R08: R09: 8807ef1a7424 R10: 8807ef1a7424 R11: 8807ef1a7400 R12: 880035c47e98 R13: R14: 00ffabea6920 R15: 0001 FS: 7ff2b234d880() GS:88086ed0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 0009 CR3: 35c1e000 CR4: 00360670 Stack: 88084e001600 ab72d1d7 880830f18500 880035c47aaf 880035c47a94 01c0 b0f4001fc4815eea 001c 880830f18500 880035c47d30 Call Trace: [] ? __alloc_skb+0x87/0x1f0 [] ip_generic_getfrag+0x56/0xe0 [] raw_getfrag+0xaf/0x100 [] __ip_append_data.isra.45+0x98a/0xb90 [] ? raw_recvmsg+0x1c0/0x1c0 [] ? raw_recvmsg+0x1c0/0x1c0 [] ip_append_data.part.46+0x7a/0xe0 [] ip_append_data+0x34/0x40 [] raw_sendmsg+0x724/0xc00 [] ? aa_sk_perm+0x70/0x210 [] ? aa_sock_msg_perm+0x61/0x150 [] inet_sendmsg+0x6b/0xa0 [] sock_sendmsg+0x3e/0x50 [] SYSC_sendto+0x101/0x190 [] ? sock_setsockopt+0x180/0x830 [] ? apparmor_socket_setsockopt+0x22/0x30 [] SyS_sendto+0xe/0x10 [] entry_SYSCALL_64_fastpath+0x1c/0x93 Code: f3 48 0f 47 de 48 85 db 0f 84 8b 01 00 00 8b 02 49 89 f9 49 89 cc 4c 8b 71 08 89 45 c4 8b 01 a8 04 0f 85 79 01 00 00 4c 8b 79 18 <4d> 8b 6f 08 4d 29 f5 49 39 dd 4c 0f 47 eb a8 02 0f 85 36 02 00 RIP [] csum_and_copy_from_iter+0x55/0x4c0 RSP CR2: 0009 ---[ end trace bdd9157c94a456b6 ]--- The trigger is when I start an artful lxd container and it tries to get an IPv4/IPv6. Oddly enough, the same thing works perfectly for my xenial container. My lxd-bridge has dnsmasq contained by Apparmor which is non standard but always worked flawlessly. I can trigger the bug 100% of the time so validating any tentative fix should be easy. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-113-generic 4.4.0-113.136 ProcVersionSignature: Ubuntu 4.4.0-112.135-generic 4.4.98 Uname: Linux 4.4.0-112-generic x86_64 NonfreeKernelModules: zfs zunicode zcommon znvpair zavl ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: simon 7244 F pulseaudio CurrentDesktop: Unity CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read kernel buffer failed: Operation not permitted Date: Sat Feb 10 16:45:26 2018 HibernationDevice: RESUME=/dev/mapper/nvme0n1p3_crypt InstallationDate: Installed on 2016-12-06 (431 days ago) InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Beta amd64 (20161206) MachineType: System76 Lemur ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-112-generic.efi.signed root=UUID=49432620-38ed-44bd-912a-7bc51eec3a35 ro quiet splash possible_cpus=4 nmi_watchdog=0 kaslr vsyscall=none vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-112-generic N/A linux-backports-modules-4.4.0-112-generic N/A linux-firmware 1.157.16 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/17/2017 dmi.bios.vendor: American
[Kernel-packages] [Bug 1748671] Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000009
The -proposed kernel 4.4.0-116.140 fixes the issue, thanks! ** Tags removed: verification-needed-xenial ** Tags added: verification-done-xenial -- 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/1748671 Title: BUG: unable to handle kernel NULL pointer dereference at 0009 Status in linux package in Ubuntu: Triaged Status in linux source package in Xenial: Triaged Bug description: Got this bug/oops while running with the linux-image-4.4.0-113-generic (4.4.0-113.136) kernel from -proposed: BUG: unable to handle kernel NULL pointer dereference at 0009 IP: [] csum_and_copy_from_iter+0x55/0x4c0 PGD 0 Oops: [#1] SMP Modules linked in: ctr ccm veth xt_CHECKSUM iptable_mangle xt_comment ec_sys bridge stp llc nf_log_ipv6 ip6table_filter ip6t_MASQUERADE nf_nat_masquerade_ipv6 ip6table_nat nf_nat_ipv6 ip6_tables nf_log_ip snd ghash_clmulni_intel soundcore r8169 psmouse input_leds cfg80211 rtsx_pci mii vhost_net vhost media ahci libahci macvtap macvlan mei_me mei kvm_intel kvm irqbypass tpm_crb i2c_hid intel_lpss_acpi inte CPU: 2 PID: 3997 Comm: dnsmasq Tainted: PW O4.4.0-113-generic #136-Ubuntu Hardware name: System76Lemur/Lemur, BIOS 5.12 02/17/2017 task: 880830269e00 ti: 880035c44000 task.ti: 880035c44000 RIP: 0010:[] [] csum_and_copy_from_iter+0x55/0x4c0 RSP: 0018:880035c47a18 EFLAGS: 00010246 RAX: ab729fd0 RBX: 001c RCX: 880035c47e98 RDX: 880035c47a94 RSI: 001c RDI: 8807ef1a7424 RBP: 880035c47a80 R08: R09: 8807ef1a7424 R10: 8807ef1a7424 R11: 8807ef1a7400 R12: 880035c47e98 R13: R14: 00ffabea6920 R15: 0001 FS: 7ff2b234d880() GS:88086ed0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 0009 CR3: 35c1e000 CR4: 00360670 Stack: 88084e001600 ab72d1d7 880830f18500 880035c47aaf 880035c47a94 01c0 b0f4001fc4815eea 001c 880830f18500 880035c47d30 Call Trace: [] ? __alloc_skb+0x87/0x1f0 [] ip_generic_getfrag+0x56/0xe0 [] raw_getfrag+0xaf/0x100 [] __ip_append_data.isra.45+0x98a/0xb90 [] ? raw_recvmsg+0x1c0/0x1c0 [] ? raw_recvmsg+0x1c0/0x1c0 [] ip_append_data.part.46+0x7a/0xe0 [] ip_append_data+0x34/0x40 [] raw_sendmsg+0x724/0xc00 [] ? aa_sk_perm+0x70/0x210 [] ? aa_sock_msg_perm+0x61/0x150 [] inet_sendmsg+0x6b/0xa0 [] sock_sendmsg+0x3e/0x50 [] SYSC_sendto+0x101/0x190 [] ? sock_setsockopt+0x180/0x830 [] ? apparmor_socket_setsockopt+0x22/0x30 [] SyS_sendto+0xe/0x10 [] entry_SYSCALL_64_fastpath+0x1c/0x93 Code: f3 48 0f 47 de 48 85 db 0f 84 8b 01 00 00 8b 02 49 89 f9 49 89 cc 4c 8b 71 08 89 45 c4 8b 01 a8 04 0f 85 79 01 00 00 4c 8b 79 18 <4d> 8b 6f 08 4d 29 f5 49 39 dd 4c 0f 47 eb a8 02 0f 85 36 02 00 RIP [] csum_and_copy_from_iter+0x55/0x4c0 RSP CR2: 0009 ---[ end trace bdd9157c94a456b6 ]--- The trigger is when I start an artful lxd container and it tries to get an IPv4/IPv6. Oddly enough, the same thing works perfectly for my xenial container. My lxd-bridge has dnsmasq contained by Apparmor which is non standard but always worked flawlessly. I can trigger the bug 100% of the time so validating any tentative fix should be easy. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-113-generic 4.4.0-113.136 ProcVersionSignature: Ubuntu 4.4.0-112.135-generic 4.4.98 Uname: Linux 4.4.0-112-generic x86_64 NonfreeKernelModules: zfs zunicode zcommon znvpair zavl ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: simon 7244 F pulseaudio CurrentDesktop: Unity CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read kernel buffer failed: Operation not permitted Date: Sat Feb 10 16:45:26 2018 HibernationDevice: RESUME=/dev/mapper/nvme0n1p3_crypt InstallationDate: Installed on 2016-12-06 (431 days ago) InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Beta amd64 (20161206) MachineType: System76 Lemur ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-112-generic.efi.signed root=UUID=49432620-38ed-44bd-912a-7bc51eec3a35 ro quiet splash possible_cpus=4 nmi_watchdog=0 kaslr vsyscall=none vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-112-generic N/A linux-backports-modules-4.4.0-112-generic N/A linux-firmware 1.157.16 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh
[Kernel-packages] [Bug 1748671] Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000009
This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- xenial' to 'verification-done-xenial'. If the problem still exists, change the tag 'verification-needed-xenial' to 'verification-failed- xenial'. If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-xenial -- 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/1748671 Title: BUG: unable to handle kernel NULL pointer dereference at 0009 Status in linux package in Ubuntu: Triaged Status in linux source package in Xenial: Triaged Bug description: Got this bug/oops while running with the linux-image-4.4.0-113-generic (4.4.0-113.136) kernel from -proposed: BUG: unable to handle kernel NULL pointer dereference at 0009 IP: [] csum_and_copy_from_iter+0x55/0x4c0 PGD 0 Oops: [#1] SMP Modules linked in: ctr ccm veth xt_CHECKSUM iptable_mangle xt_comment ec_sys bridge stp llc nf_log_ipv6 ip6table_filter ip6t_MASQUERADE nf_nat_masquerade_ipv6 ip6table_nat nf_nat_ipv6 ip6_tables nf_log_ip snd ghash_clmulni_intel soundcore r8169 psmouse input_leds cfg80211 rtsx_pci mii vhost_net vhost media ahci libahci macvtap macvlan mei_me mei kvm_intel kvm irqbypass tpm_crb i2c_hid intel_lpss_acpi inte CPU: 2 PID: 3997 Comm: dnsmasq Tainted: PW O4.4.0-113-generic #136-Ubuntu Hardware name: System76Lemur/Lemur, BIOS 5.12 02/17/2017 task: 880830269e00 ti: 880035c44000 task.ti: 880035c44000 RIP: 0010:[] [] csum_and_copy_from_iter+0x55/0x4c0 RSP: 0018:880035c47a18 EFLAGS: 00010246 RAX: ab729fd0 RBX: 001c RCX: 880035c47e98 RDX: 880035c47a94 RSI: 001c RDI: 8807ef1a7424 RBP: 880035c47a80 R08: R09: 8807ef1a7424 R10: 8807ef1a7424 R11: 8807ef1a7400 R12: 880035c47e98 R13: R14: 00ffabea6920 R15: 0001 FS: 7ff2b234d880() GS:88086ed0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 0009 CR3: 35c1e000 CR4: 00360670 Stack: 88084e001600 ab72d1d7 880830f18500 880035c47aaf 880035c47a94 01c0 b0f4001fc4815eea 001c 880830f18500 880035c47d30 Call Trace: [] ? __alloc_skb+0x87/0x1f0 [] ip_generic_getfrag+0x56/0xe0 [] raw_getfrag+0xaf/0x100 [] __ip_append_data.isra.45+0x98a/0xb90 [] ? raw_recvmsg+0x1c0/0x1c0 [] ? raw_recvmsg+0x1c0/0x1c0 [] ip_append_data.part.46+0x7a/0xe0 [] ip_append_data+0x34/0x40 [] raw_sendmsg+0x724/0xc00 [] ? aa_sk_perm+0x70/0x210 [] ? aa_sock_msg_perm+0x61/0x150 [] inet_sendmsg+0x6b/0xa0 [] sock_sendmsg+0x3e/0x50 [] SYSC_sendto+0x101/0x190 [] ? sock_setsockopt+0x180/0x830 [] ? apparmor_socket_setsockopt+0x22/0x30 [] SyS_sendto+0xe/0x10 [] entry_SYSCALL_64_fastpath+0x1c/0x93 Code: f3 48 0f 47 de 48 85 db 0f 84 8b 01 00 00 8b 02 49 89 f9 49 89 cc 4c 8b 71 08 89 45 c4 8b 01 a8 04 0f 85 79 01 00 00 4c 8b 79 18 <4d> 8b 6f 08 4d 29 f5 49 39 dd 4c 0f 47 eb a8 02 0f 85 36 02 00 RIP [] csum_and_copy_from_iter+0x55/0x4c0 RSP CR2: 0009 ---[ end trace bdd9157c94a456b6 ]--- The trigger is when I start an artful lxd container and it tries to get an IPv4/IPv6. Oddly enough, the same thing works perfectly for my xenial container. My lxd-bridge has dnsmasq contained by Apparmor which is non standard but always worked flawlessly. I can trigger the bug 100% of the time so validating any tentative fix should be easy. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-113-generic 4.4.0-113.136 ProcVersionSignature: Ubuntu 4.4.0-112.135-generic 4.4.98 Uname: Linux 4.4.0-112-generic x86_64 NonfreeKernelModules: zfs zunicode zcommon znvpair zavl ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: simon 7244 F pulseaudio CurrentDesktop: Unity CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read kernel buffer failed: Operation not permitted Date: Sat Feb 10 16:45:26 2018 HibernationDevice: RESUME=/dev/mapper/nvme0n1p3_crypt InstallationDate: Installed on 2016-12-06 (431 days ago) InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Beta amd64 (20161206) MachineType: System76 Lemur ProcFB: 0 inteldrmfb ProcKernelCmdLine:
[Kernel-packages] [Bug 1748671] Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000009
** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Changed in: linux (Ubuntu) Status: Incomplete => Triaged ** Also affects: linux (Ubuntu Xenial) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Xenial) Status: New => Triaged ** Changed in: linux (Ubuntu Xenial) Importance: Undecided => 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/1748671 Title: BUG: unable to handle kernel NULL pointer dereference at 0009 Status in linux package in Ubuntu: Triaged Status in linux source package in Xenial: Triaged Bug description: Got this bug/oops while running with the linux-image-4.4.0-113-generic (4.4.0-113.136) kernel from -proposed: BUG: unable to handle kernel NULL pointer dereference at 0009 IP: [] csum_and_copy_from_iter+0x55/0x4c0 PGD 0 Oops: [#1] SMP Modules linked in: ctr ccm veth xt_CHECKSUM iptable_mangle xt_comment ec_sys bridge stp llc nf_log_ipv6 ip6table_filter ip6t_MASQUERADE nf_nat_masquerade_ipv6 ip6table_nat nf_nat_ipv6 ip6_tables nf_log_ip snd ghash_clmulni_intel soundcore r8169 psmouse input_leds cfg80211 rtsx_pci mii vhost_net vhost media ahci libahci macvtap macvlan mei_me mei kvm_intel kvm irqbypass tpm_crb i2c_hid intel_lpss_acpi inte CPU: 2 PID: 3997 Comm: dnsmasq Tainted: PW O4.4.0-113-generic #136-Ubuntu Hardware name: System76Lemur/Lemur, BIOS 5.12 02/17/2017 task: 880830269e00 ti: 880035c44000 task.ti: 880035c44000 RIP: 0010:[] [] csum_and_copy_from_iter+0x55/0x4c0 RSP: 0018:880035c47a18 EFLAGS: 00010246 RAX: ab729fd0 RBX: 001c RCX: 880035c47e98 RDX: 880035c47a94 RSI: 001c RDI: 8807ef1a7424 RBP: 880035c47a80 R08: R09: 8807ef1a7424 R10: 8807ef1a7424 R11: 8807ef1a7400 R12: 880035c47e98 R13: R14: 00ffabea6920 R15: 0001 FS: 7ff2b234d880() GS:88086ed0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 0009 CR3: 35c1e000 CR4: 00360670 Stack: 88084e001600 ab72d1d7 880830f18500 880035c47aaf 880035c47a94 01c0 b0f4001fc4815eea 001c 880830f18500 880035c47d30 Call Trace: [] ? __alloc_skb+0x87/0x1f0 [] ip_generic_getfrag+0x56/0xe0 [] raw_getfrag+0xaf/0x100 [] __ip_append_data.isra.45+0x98a/0xb90 [] ? raw_recvmsg+0x1c0/0x1c0 [] ? raw_recvmsg+0x1c0/0x1c0 [] ip_append_data.part.46+0x7a/0xe0 [] ip_append_data+0x34/0x40 [] raw_sendmsg+0x724/0xc00 [] ? aa_sk_perm+0x70/0x210 [] ? aa_sock_msg_perm+0x61/0x150 [] inet_sendmsg+0x6b/0xa0 [] sock_sendmsg+0x3e/0x50 [] SYSC_sendto+0x101/0x190 [] ? sock_setsockopt+0x180/0x830 [] ? apparmor_socket_setsockopt+0x22/0x30 [] SyS_sendto+0xe/0x10 [] entry_SYSCALL_64_fastpath+0x1c/0x93 Code: f3 48 0f 47 de 48 85 db 0f 84 8b 01 00 00 8b 02 49 89 f9 49 89 cc 4c 8b 71 08 89 45 c4 8b 01 a8 04 0f 85 79 01 00 00 4c 8b 79 18 <4d> 8b 6f 08 4d 29 f5 49 39 dd 4c 0f 47 eb a8 02 0f 85 36 02 00 RIP [] csum_and_copy_from_iter+0x55/0x4c0 RSP CR2: 0009 ---[ end trace bdd9157c94a456b6 ]--- The trigger is when I start an artful lxd container and it tries to get an IPv4/IPv6. Oddly enough, the same thing works perfectly for my xenial container. My lxd-bridge has dnsmasq contained by Apparmor which is non standard but always worked flawlessly. I can trigger the bug 100% of the time so validating any tentative fix should be easy. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-113-generic 4.4.0-113.136 ProcVersionSignature: Ubuntu 4.4.0-112.135-generic 4.4.98 Uname: Linux 4.4.0-112-generic x86_64 NonfreeKernelModules: zfs zunicode zcommon znvpair zavl ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: simon 7244 F pulseaudio CurrentDesktop: Unity CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read kernel buffer failed: Operation not permitted Date: Sat Feb 10 16:45:26 2018 HibernationDevice: RESUME=/dev/mapper/nvme0n1p3_crypt InstallationDate: Installed on 2016-12-06 (431 days ago) InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Beta amd64 (20161206) MachineType: System76 Lemur ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-112-generic.efi.signed root=UUID=49432620-38ed-44bd-912a-7bc51eec3a35 ro quiet splash possible_cpus=4 nmi_watchdog=0 kaslr vsyscall=none vt.handoff=7 RelatedPackageVersions:
[Kernel-packages] [Bug 1748671] Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000009
apw's test kernel (https://people.canonical.com/~apw/lp1748671/fix-not- xenial/) fixed the problem, thanks! -- 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/1748671 Title: BUG: unable to handle kernel NULL pointer dereference at 0009 Status in linux package in Ubuntu: Confirmed Bug description: Got this bug/oops while running with the linux-image-4.4.0-113-generic (4.4.0-113.136) kernel from -proposed: BUG: unable to handle kernel NULL pointer dereference at 0009 IP: [] csum_and_copy_from_iter+0x55/0x4c0 PGD 0 Oops: [#1] SMP Modules linked in: ctr ccm veth xt_CHECKSUM iptable_mangle xt_comment ec_sys bridge stp llc nf_log_ipv6 ip6table_filter ip6t_MASQUERADE nf_nat_masquerade_ipv6 ip6table_nat nf_nat_ipv6 ip6_tables nf_log_ip snd ghash_clmulni_intel soundcore r8169 psmouse input_leds cfg80211 rtsx_pci mii vhost_net vhost media ahci libahci macvtap macvlan mei_me mei kvm_intel kvm irqbypass tpm_crb i2c_hid intel_lpss_acpi inte CPU: 2 PID: 3997 Comm: dnsmasq Tainted: PW O4.4.0-113-generic #136-Ubuntu Hardware name: System76Lemur/Lemur, BIOS 5.12 02/17/2017 task: 880830269e00 ti: 880035c44000 task.ti: 880035c44000 RIP: 0010:[] [] csum_and_copy_from_iter+0x55/0x4c0 RSP: 0018:880035c47a18 EFLAGS: 00010246 RAX: ab729fd0 RBX: 001c RCX: 880035c47e98 RDX: 880035c47a94 RSI: 001c RDI: 8807ef1a7424 RBP: 880035c47a80 R08: R09: 8807ef1a7424 R10: 8807ef1a7424 R11: 8807ef1a7400 R12: 880035c47e98 R13: R14: 00ffabea6920 R15: 0001 FS: 7ff2b234d880() GS:88086ed0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 0009 CR3: 35c1e000 CR4: 00360670 Stack: 88084e001600 ab72d1d7 880830f18500 880035c47aaf 880035c47a94 01c0 b0f4001fc4815eea 001c 880830f18500 880035c47d30 Call Trace: [] ? __alloc_skb+0x87/0x1f0 [] ip_generic_getfrag+0x56/0xe0 [] raw_getfrag+0xaf/0x100 [] __ip_append_data.isra.45+0x98a/0xb90 [] ? raw_recvmsg+0x1c0/0x1c0 [] ? raw_recvmsg+0x1c0/0x1c0 [] ip_append_data.part.46+0x7a/0xe0 [] ip_append_data+0x34/0x40 [] raw_sendmsg+0x724/0xc00 [] ? aa_sk_perm+0x70/0x210 [] ? aa_sock_msg_perm+0x61/0x150 [] inet_sendmsg+0x6b/0xa0 [] sock_sendmsg+0x3e/0x50 [] SYSC_sendto+0x101/0x190 [] ? sock_setsockopt+0x180/0x830 [] ? apparmor_socket_setsockopt+0x22/0x30 [] SyS_sendto+0xe/0x10 [] entry_SYSCALL_64_fastpath+0x1c/0x93 Code: f3 48 0f 47 de 48 85 db 0f 84 8b 01 00 00 8b 02 49 89 f9 49 89 cc 4c 8b 71 08 89 45 c4 8b 01 a8 04 0f 85 79 01 00 00 4c 8b 79 18 <4d> 8b 6f 08 4d 29 f5 49 39 dd 4c 0f 47 eb a8 02 0f 85 36 02 00 RIP [] csum_and_copy_from_iter+0x55/0x4c0 RSP CR2: 0009 ---[ end trace bdd9157c94a456b6 ]--- The trigger is when I start an artful lxd container and it tries to get an IPv4/IPv6. Oddly enough, the same thing works perfectly for my xenial container. My lxd-bridge has dnsmasq contained by Apparmor which is non standard but always worked flawlessly. I can trigger the bug 100% of the time so validating any tentative fix should be easy. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-113-generic 4.4.0-113.136 ProcVersionSignature: Ubuntu 4.4.0-112.135-generic 4.4.98 Uname: Linux 4.4.0-112-generic x86_64 NonfreeKernelModules: zfs zunicode zcommon znvpair zavl ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: simon 7244 F pulseaudio CurrentDesktop: Unity CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read kernel buffer failed: Operation not permitted Date: Sat Feb 10 16:45:26 2018 HibernationDevice: RESUME=/dev/mapper/nvme0n1p3_crypt InstallationDate: Installed on 2016-12-06 (431 days ago) InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Beta amd64 (20161206) MachineType: System76 Lemur ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-112-generic.efi.signed root=UUID=49432620-38ed-44bd-912a-7bc51eec3a35 ro quiet splash possible_cpus=4 nmi_watchdog=0 kaslr vsyscall=none vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-112-generic N/A linux-backports-modules-4.4.0-112-generic N/A linux-firmware 1.157.16 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/17/2017 dmi.bios.vendor: American Megatrends Inc.
[Kernel-packages] [Bug 1748671] Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000009
I could reproduce with kernel 4.4.0-115.139. Removing dnsmasq's Apparmor profile doesn't change anything. Once the artful container boots, the host's dnsmasq (lxd-bridge) hangs (state D) and stracing it showed absolutely nothing. -- 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/1748671 Title: BUG: unable to handle kernel NULL pointer dereference at 0009 Status in linux package in Ubuntu: Confirmed Bug description: Got this bug/oops while running with the linux-image-4.4.0-113-generic (4.4.0-113.136) kernel from -proposed: BUG: unable to handle kernel NULL pointer dereference at 0009 IP: [] csum_and_copy_from_iter+0x55/0x4c0 PGD 0 Oops: [#1] SMP Modules linked in: ctr ccm veth xt_CHECKSUM iptable_mangle xt_comment ec_sys bridge stp llc nf_log_ipv6 ip6table_filter ip6t_MASQUERADE nf_nat_masquerade_ipv6 ip6table_nat nf_nat_ipv6 ip6_tables nf_log_ip snd ghash_clmulni_intel soundcore r8169 psmouse input_leds cfg80211 rtsx_pci mii vhost_net vhost media ahci libahci macvtap macvlan mei_me mei kvm_intel kvm irqbypass tpm_crb i2c_hid intel_lpss_acpi inte CPU: 2 PID: 3997 Comm: dnsmasq Tainted: PW O4.4.0-113-generic #136-Ubuntu Hardware name: System76Lemur/Lemur, BIOS 5.12 02/17/2017 task: 880830269e00 ti: 880035c44000 task.ti: 880035c44000 RIP: 0010:[] [] csum_and_copy_from_iter+0x55/0x4c0 RSP: 0018:880035c47a18 EFLAGS: 00010246 RAX: ab729fd0 RBX: 001c RCX: 880035c47e98 RDX: 880035c47a94 RSI: 001c RDI: 8807ef1a7424 RBP: 880035c47a80 R08: R09: 8807ef1a7424 R10: 8807ef1a7424 R11: 8807ef1a7400 R12: 880035c47e98 R13: R14: 00ffabea6920 R15: 0001 FS: 7ff2b234d880() GS:88086ed0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 0009 CR3: 35c1e000 CR4: 00360670 Stack: 88084e001600 ab72d1d7 880830f18500 880035c47aaf 880035c47a94 01c0 b0f4001fc4815eea 001c 880830f18500 880035c47d30 Call Trace: [] ? __alloc_skb+0x87/0x1f0 [] ip_generic_getfrag+0x56/0xe0 [] raw_getfrag+0xaf/0x100 [] __ip_append_data.isra.45+0x98a/0xb90 [] ? raw_recvmsg+0x1c0/0x1c0 [] ? raw_recvmsg+0x1c0/0x1c0 [] ip_append_data.part.46+0x7a/0xe0 [] ip_append_data+0x34/0x40 [] raw_sendmsg+0x724/0xc00 [] ? aa_sk_perm+0x70/0x210 [] ? aa_sock_msg_perm+0x61/0x150 [] inet_sendmsg+0x6b/0xa0 [] sock_sendmsg+0x3e/0x50 [] SYSC_sendto+0x101/0x190 [] ? sock_setsockopt+0x180/0x830 [] ? apparmor_socket_setsockopt+0x22/0x30 [] SyS_sendto+0xe/0x10 [] entry_SYSCALL_64_fastpath+0x1c/0x93 Code: f3 48 0f 47 de 48 85 db 0f 84 8b 01 00 00 8b 02 49 89 f9 49 89 cc 4c 8b 71 08 89 45 c4 8b 01 a8 04 0f 85 79 01 00 00 4c 8b 79 18 <4d> 8b 6f 08 4d 29 f5 49 39 dd 4c 0f 47 eb a8 02 0f 85 36 02 00 RIP [] csum_and_copy_from_iter+0x55/0x4c0 RSP CR2: 0009 ---[ end trace bdd9157c94a456b6 ]--- The trigger is when I start an artful lxd container and it tries to get an IPv4/IPv6. Oddly enough, the same thing works perfectly for my xenial container. My lxd-bridge has dnsmasq contained by Apparmor which is non standard but always worked flawlessly. I can trigger the bug 100% of the time so validating any tentative fix should be easy. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-113-generic 4.4.0-113.136 ProcVersionSignature: Ubuntu 4.4.0-112.135-generic 4.4.98 Uname: Linux 4.4.0-112-generic x86_64 NonfreeKernelModules: zfs zunicode zcommon znvpair zavl ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: simon 7244 F pulseaudio CurrentDesktop: Unity CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read kernel buffer failed: Operation not permitted Date: Sat Feb 10 16:45:26 2018 HibernationDevice: RESUME=/dev/mapper/nvme0n1p3_crypt InstallationDate: Installed on 2016-12-06 (431 days ago) InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Beta amd64 (20161206) MachineType: System76 Lemur ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-112-generic.efi.signed root=UUID=49432620-38ed-44bd-912a-7bc51eec3a35 ro quiet splash possible_cpus=4 nmi_watchdog=0 kaslr vsyscall=none vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-112-generic N/A linux-backports-modules-4.4.0-112-generic N/A linux-firmware 1.157.16 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No
[Kernel-packages] [Bug 1748671] Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000009
** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- 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/1748671 Title: BUG: unable to handle kernel NULL pointer dereference at 0009 Status in linux package in Ubuntu: Confirmed Bug description: Got this bug/oops while running with the linux-image-4.4.0-113-generic (4.4.0-113.136) kernel from -proposed: BUG: unable to handle kernel NULL pointer dereference at 0009 IP: [] csum_and_copy_from_iter+0x55/0x4c0 PGD 0 Oops: [#1] SMP Modules linked in: ctr ccm veth xt_CHECKSUM iptable_mangle xt_comment ec_sys bridge stp llc nf_log_ipv6 ip6table_filter ip6t_MASQUERADE nf_nat_masquerade_ipv6 ip6table_nat nf_nat_ipv6 ip6_tables nf_log_ip snd ghash_clmulni_intel soundcore r8169 psmouse input_leds cfg80211 rtsx_pci mii vhost_net vhost media ahci libahci macvtap macvlan mei_me mei kvm_intel kvm irqbypass tpm_crb i2c_hid intel_lpss_acpi inte CPU: 2 PID: 3997 Comm: dnsmasq Tainted: PW O4.4.0-113-generic #136-Ubuntu Hardware name: System76Lemur/Lemur, BIOS 5.12 02/17/2017 task: 880830269e00 ti: 880035c44000 task.ti: 880035c44000 RIP: 0010:[] [] csum_and_copy_from_iter+0x55/0x4c0 RSP: 0018:880035c47a18 EFLAGS: 00010246 RAX: ab729fd0 RBX: 001c RCX: 880035c47e98 RDX: 880035c47a94 RSI: 001c RDI: 8807ef1a7424 RBP: 880035c47a80 R08: R09: 8807ef1a7424 R10: 8807ef1a7424 R11: 8807ef1a7400 R12: 880035c47e98 R13: R14: 00ffabea6920 R15: 0001 FS: 7ff2b234d880() GS:88086ed0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 0009 CR3: 35c1e000 CR4: 00360670 Stack: 88084e001600 ab72d1d7 880830f18500 880035c47aaf 880035c47a94 01c0 b0f4001fc4815eea 001c 880830f18500 880035c47d30 Call Trace: [] ? __alloc_skb+0x87/0x1f0 [] ip_generic_getfrag+0x56/0xe0 [] raw_getfrag+0xaf/0x100 [] __ip_append_data.isra.45+0x98a/0xb90 [] ? raw_recvmsg+0x1c0/0x1c0 [] ? raw_recvmsg+0x1c0/0x1c0 [] ip_append_data.part.46+0x7a/0xe0 [] ip_append_data+0x34/0x40 [] raw_sendmsg+0x724/0xc00 [] ? aa_sk_perm+0x70/0x210 [] ? aa_sock_msg_perm+0x61/0x150 [] inet_sendmsg+0x6b/0xa0 [] sock_sendmsg+0x3e/0x50 [] SYSC_sendto+0x101/0x190 [] ? sock_setsockopt+0x180/0x830 [] ? apparmor_socket_setsockopt+0x22/0x30 [] SyS_sendto+0xe/0x10 [] entry_SYSCALL_64_fastpath+0x1c/0x93 Code: f3 48 0f 47 de 48 85 db 0f 84 8b 01 00 00 8b 02 49 89 f9 49 89 cc 4c 8b 71 08 89 45 c4 8b 01 a8 04 0f 85 79 01 00 00 4c 8b 79 18 <4d> 8b 6f 08 4d 29 f5 49 39 dd 4c 0f 47 eb a8 02 0f 85 36 02 00 RIP [] csum_and_copy_from_iter+0x55/0x4c0 RSP CR2: 0009 ---[ end trace bdd9157c94a456b6 ]--- The trigger is when I start an artful lxd container and it tries to get an IPv4/IPv6. Oddly enough, the same thing works perfectly for my xenial container. My lxd-bridge has dnsmasq contained by Apparmor which is non standard but always worked flawlessly. I can trigger the bug 100% of the time so validating any tentative fix should be easy. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-113-generic 4.4.0-113.136 ProcVersionSignature: Ubuntu 4.4.0-112.135-generic 4.4.98 Uname: Linux 4.4.0-112-generic x86_64 NonfreeKernelModules: zfs zunicode zcommon znvpair zavl ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: simon 7244 F pulseaudio CurrentDesktop: Unity CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read kernel buffer failed: Operation not permitted Date: Sat Feb 10 16:45:26 2018 HibernationDevice: RESUME=/dev/mapper/nvme0n1p3_crypt InstallationDate: Installed on 2016-12-06 (431 days ago) InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Beta amd64 (20161206) MachineType: System76 Lemur ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-112-generic.efi.signed root=UUID=49432620-38ed-44bd-912a-7bc51eec3a35 ro quiet splash possible_cpus=4 nmi_watchdog=0 kaslr vsyscall=none vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-112-generic N/A linux-backports-modules-4.4.0-112-generic N/A linux-firmware 1.157.16 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/17/2017 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 5.12 dmi.board.asset.tag:
[Kernel-packages] [Bug 1748671] Re: BUG: unable to handle kernel NULL pointer dereference at 0000000000000009
apport information ** Tags added: apport-collected ** Description changed: Got this bug/oops while running with the linux-image-4.4.0-113-generic (4.4.0-113.136) kernel from -proposed: BUG: unable to handle kernel NULL pointer dereference at 0009 IP: [] csum_and_copy_from_iter+0x55/0x4c0 PGD 0 Oops: [#1] SMP Modules linked in: ctr ccm veth xt_CHECKSUM iptable_mangle xt_comment ec_sys bridge stp llc nf_log_ipv6 ip6table_filter ip6t_MASQUERADE nf_nat_masquerade_ipv6 ip6table_nat nf_nat_ipv6 ip6_tables nf_log_ip snd ghash_clmulni_intel soundcore r8169 psmouse input_leds cfg80211 rtsx_pci mii vhost_net vhost media ahci libahci macvtap macvlan mei_me mei kvm_intel kvm irqbypass tpm_crb i2c_hid intel_lpss_acpi inte CPU: 2 PID: 3997 Comm: dnsmasq Tainted: PW O4.4.0-113-generic #136-Ubuntu Hardware name: System76Lemur/Lemur, BIOS 5.12 02/17/2017 task: 880830269e00 ti: 880035c44000 task.ti: 880035c44000 RIP: 0010:[] [] csum_and_copy_from_iter+0x55/0x4c0 RSP: 0018:880035c47a18 EFLAGS: 00010246 RAX: ab729fd0 RBX: 001c RCX: 880035c47e98 RDX: 880035c47a94 RSI: 001c RDI: 8807ef1a7424 RBP: 880035c47a80 R08: R09: 8807ef1a7424 R10: 8807ef1a7424 R11: 8807ef1a7400 R12: 880035c47e98 R13: R14: 00ffabea6920 R15: 0001 FS: 7ff2b234d880() GS:88086ed0() knlGS: CS: 0010 DS: ES: CR0: 80050033 CR2: 0009 CR3: 35c1e000 CR4: 00360670 Stack: 88084e001600 ab72d1d7 880830f18500 880035c47aaf 880035c47a94 01c0 b0f4001fc4815eea 001c 880830f18500 880035c47d30 Call Trace: [] ? __alloc_skb+0x87/0x1f0 [] ip_generic_getfrag+0x56/0xe0 [] raw_getfrag+0xaf/0x100 [] __ip_append_data.isra.45+0x98a/0xb90 [] ? raw_recvmsg+0x1c0/0x1c0 [] ? raw_recvmsg+0x1c0/0x1c0 [] ip_append_data.part.46+0x7a/0xe0 [] ip_append_data+0x34/0x40 [] raw_sendmsg+0x724/0xc00 [] ? aa_sk_perm+0x70/0x210 [] ? aa_sock_msg_perm+0x61/0x150 [] inet_sendmsg+0x6b/0xa0 [] sock_sendmsg+0x3e/0x50 [] SYSC_sendto+0x101/0x190 [] ? sock_setsockopt+0x180/0x830 [] ? apparmor_socket_setsockopt+0x22/0x30 [] SyS_sendto+0xe/0x10 [] entry_SYSCALL_64_fastpath+0x1c/0x93 Code: f3 48 0f 47 de 48 85 db 0f 84 8b 01 00 00 8b 02 49 89 f9 49 89 cc 4c 8b 71 08 89 45 c4 8b 01 a8 04 0f 85 79 01 00 00 4c 8b 79 18 <4d> 8b 6f 08 4d 29 f5 49 39 dd 4c 0f 47 eb a8 02 0f 85 36 02 00 RIP [] csum_and_copy_from_iter+0x55/0x4c0 RSP CR2: 0009 ---[ end trace bdd9157c94a456b6 ]--- The trigger is when I start an artful lxd container and it tries to get an IPv4/IPv6. Oddly enough, the same thing works perfectly for my xenial container. My lxd-bridge has dnsmasq contained by Apparmor which is non standard but always worked flawlessly. I can trigger the bug 100% of the time so validating any tentative fix should be easy. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-113-generic 4.4.0-113.136 ProcVersionSignature: Ubuntu 4.4.0-112.135-generic 4.4.98 Uname: Linux 4.4.0-112-generic x86_64 NonfreeKernelModules: zfs zunicode zcommon znvpair zavl ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: simon 7244 F pulseaudio CurrentDesktop: Unity CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read kernel buffer failed: Operation not permitted Date: Sat Feb 10 16:45:26 2018 HibernationDevice: RESUME=/dev/mapper/nvme0n1p3_crypt InstallationDate: Installed on 2016-12-06 (431 days ago) InstallationMedia: Ubuntu-Server 16.04.1 LTS "Xenial Xerus" - Beta amd64 (20161206) MachineType: System76 Lemur ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-112-generic.efi.signed root=UUID=49432620-38ed-44bd-912a-7bc51eec3a35 ro quiet splash possible_cpus=4 nmi_watchdog=0 kaslr vsyscall=none vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-112-generic N/A linux-backports-modules-4.4.0-112-generic N/A linux-firmware 1.157.16 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/17/2017 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 5.12 dmi.board.asset.tag: Tag 12345 dmi.board.name: Lemur dmi.board.vendor: System76 dmi.board.version: lemu7 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: System76 dmi.chassis.version: N/A dmi.modalias:
