[Group.of.nepali.translators] [Bug 1763454] Re: bpf_map_lookup_elem: BUG: unable to handle kernel paging request
This bug was fixed in the package linux - 4.4.0-127.153 --- linux (4.4.0-127.153) xenial; urgency=medium * CVE-2018-3639 (powerpc) - powerpc/pseries: Support firmware disable of RFI flush - powerpc/powernv: Support firmware disable of RFI flush - powerpc/rfi-flush: Move the logic to avoid a redo into the debugfs code - powerpc/rfi-flush: Make it possible to call setup_rfi_flush() again - powerpc/rfi-flush: Always enable fallback flush on pseries - powerpc/rfi-flush: Differentiate enabled and patched flush types - powerpc/rfi-flush: Call setup_rfi_flush() after LPM migration - powerpc/pseries: Add new H_GET_CPU_CHARACTERISTICS flags - powerpc: Add security feature flags for Spectre/Meltdown - powerpc/pseries: Set or clear security feature flags - powerpc/powernv: Set or clear security feature flags - powerpc/64s: Move cpu_show_meltdown() - powerpc/64s: Enhance the information in cpu_show_meltdown() - powerpc/powernv: Use the security flags in pnv_setup_rfi_flush() - powerpc/pseries: Use the security flags in pseries_setup_rfi_flush() - powerpc/64s: Wire up cpu_show_spectre_v1() - powerpc/64s: Wire up cpu_show_spectre_v2() - powerpc/pseries: Fix clearing of security feature flags - powerpc: Move default security feature flags - powerpc/pseries: Restore default security feature flags on setup - SAUCE: powerpc/64s: Add support for a store forwarding barrier at kernel entry/exit * CVE-2018-3639 (x86) - SAUCE: Clean up IBPB and IBRS control functions and macros - SAUCE: Fix up IBPB and IBRS kernel parameters documentation - SAUCE: Remove #define X86_FEATURE_PTI - x86/cpufeature: Move some of the scattered feature bits to x86_capability - x86/cpufeature: Cleanup get_cpu_cap() - x86/cpu: Probe CPUID leaf 6 even when cpuid_level == 6 - x86/cpufeatures: Add CPUID_7_EDX CPUID leaf - x86/cpufeatures: Add Intel feature bits for Speculation Control - SAUCE: x86/kvm: Expose SPEC_CTRL from the leaf - x86/cpufeatures: Add AMD feature bits for Speculation Control - x86/msr: Add definitions for new speculation control MSRs - SAUCE: x86/msr: Rename MSR spec control feature bits - x86/pti: Do not enable PTI on CPUs which are not vulnerable to Meltdown - x86/cpufeature: Blacklist SPEC_CTRL/PRED_CMD on early Spectre v2 microcodes - x86/speculation: Add basic IBPB (Indirect Branch Prediction Barrier) support - x86/speculation: Add dependency - x86/cpufeatures: Clean up Spectre v2 related CPUID flags - x86/cpuid: Fix up "virtual" IBRS/IBPB/STIBP feature bits on Intel - SAUCE: x86/speculation: Move vendor specific IBRS/IBPB control code - SAUCE: x86: Add alternative_msr_write - SAUCE: x86/nospec: Simplify alternative_msr_write() - SAUCE: x86/bugs: Concentrate bug detection into a separate function - SAUCE: x86/bugs: Concentrate bug reporting into a separate function - arch: Introduce post-init read-only memory - SAUCE: x86/bugs: Read SPEC_CTRL MSR during boot and re-use reserved bits - SAUCE: x86/bugs, KVM: Support the combination of guest and host IBRS - SAUCE: x86/bugs: Expose /sys/../spec_store_bypass - SAUCE: x86/cpufeatures: Add X86_FEATURE_RDS - SAUCE: x86/bugs: Provide boot parameters for the spec_store_bypass_disable mitigation - SAUCE: x86/bugs/intel: Set proper CPU features and setup RDS - SAUCE: x86/bugs: Whitelist allowed SPEC_CTRL MSR values - SAUCE: x86/bugs/AMD: Add support to disable RDS on Fam[15,16,17]h if requested - SAUCE: x86/KVM/VMX: Expose SPEC_CTRL Bit(2) to the guest - SAUCE: x86/speculation: Create spec-ctrl.h to avoid include hell - SAUCE: prctl: Add speculation control prctls - x86/process: Optimize TIF checks in __switch_to_xtra() - SAUCE: x86/process: Allow runtime control of Speculative Store Bypass - SAUCE: x86/speculation: Add prctl for Speculative Store Bypass mitigation - SAUCE: nospec: Allow getting/setting on non-current task - SAUCE: proc: Provide details on speculation flaw mitigations - SAUCE: seccomp: Enable speculation flaw mitigations - SAUCE: x86/bugs: Honour SPEC_CTRL default - SAUCE: x86/bugs: Make boot modes __ro_after_init - SAUCE: prctl: Add force disable speculation - SAUCE: seccomp: Use PR_SPEC_FORCE_DISABLE - selftest/seccomp: Fix the flag name SECCOMP_FILTER_FLAG_TSYNC - SAUCE: seccomp: Add filter flag to opt-out of SSB mitigation - SAUCE: seccomp: Move speculation migitation control to arch code - SAUCE: x86/speculation: Make "seccomp" the default mode for Speculative Store Bypass - SAUCE: x86/bugs: Rename _RDS to _SSBD - SAUCE: proc: Use underscores for SSBD in 'status' - SAUCE: Documentation/spec_ctrl: Do some minor cleanups - SAUCE: x86/bugs: Fix __ssb_select_mitigation() return type - SAUCE: x86/bugs: Make cpu_show_common() static
[Group.of.nepali.translators] [Bug 1763454] Re: bpf_map_lookup_elem: BUG: unable to handle kernel paging request
** Changed in: linux (Ubuntu Xenial) Importance: Medium => High ** Changed in: linux (Ubuntu) Status: Triaged => Invalid -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs https://bugs.launchpad.net/bugs/1763454 Title: bpf_map_lookup_elem: BUG: unable to handle kernel paging request Status in linux package in Ubuntu: Invalid Status in linux source package in Xenial: Triaged Bug description: SRU Justification Impact: Some unfortunate timing between the fix for CVE-2017-17862 being backported and some updates from upstream stable resulted in us not having some hunks from the CVE patch. This is causing oopses (see below). Fix: Add in the missing hunks from the CVE patch. Test case: See test results in comment #4. Regression potential: This just updates the code to match the upstream patch, which has been upstream for months, so regression potential should be low. --- Hey, we are currently debugging an issue with Scope [1] where the initialization of the used tcptracer-bpf [2] leads to a kernel oops at the first call of `bpf_map_lookup_elem`. The OS is Ubuntu Xenial with kernel version `Ubuntu 4.4.0-119.143-generic 4.4.114`. `4.4.0-116.140` does not show the problem. Example: ``` [ 58.763045] BUG: unable to handle kernel paging request at 3c0c41a8 [ 58.846450] IP: [] bpf_map_lookup_elem+0x6/0x20 [ 58.909436] PGD 80003be04067 PUD 3bea1067 PMD 0 [ 58.914876] Oops: [#1] SMP [ 58.915581] Modules linked in: ipt_MASQUERADE nf_nat_masquerade_ipv4 nf_conntrack_netlink nfnetlink xfrm_user xfrm_algo iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype iptable_filter ip_tables xt_conntrack x_tables nf_nat nf_conntrack br_netfilter bridge stp llc overlay vboxsf isofs ppdev crct10dif_pclmul crc32_pclmul ghash_clmulni_intel vboxguest input_leds serio_raw parport_pc parport video ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear mptspi aesni_intel scsi_transport_spi mptscsih aes_x86_64 glue_helper lrw gf128mul ablk_helper cryptd mptbase psmouse e1000 [ 59.678145] CPU: 1 PID: 1810 Comm: scope Not tainted 4.4.0-119-generic #143-Ubuntu [ 59.790501] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 [ 59.846405] task: 88003ae23800 ti: 880022c84000 task.ti: 880022c84000 [ 60.000524] RIP: 0010:[] [] bpf_map_lookup_elem+0x6/0x20 [ 60.178029] RSP: 0018:880022c87960 EFLAGS: 00010082 [ 60.257957] RAX: 8117cd70 RBX: c922f090 RCX: [ 60.350704] RDX: RSI: 880022c87ba8 RDI: 3c0c4180 [ 60.449182] RBP: 880022c87be8 R08: R09: 0800 [ 60.547638] R10: 88003ae23800 R11: 88003ca12e10 R12: [ 60.570757] R13: 88003c601200 R14: 88003fd10020 R15: 880022c87d10 [ 60.678811] FS: 7f95ba372700() GS:88003fd0() knlGS: [ 60.778636] CS: 0010 DS: ES: CR0: 80050033 [ 60.866380] CR2: 3c0c41a8 CR3: 3aeae000 CR4: 00060670 [ 60.963736] DR0: DR1: DR2: [ 61.069195] DR3: DR6: fffe0ff0 DR7: 0400 [ 61.187006] Stack: [ 61.189256] 880022c87be8 81177411 0001 [ 61.253133] 3c0c4180 880022c87ba8 [ 61.345334] 880022c87d10 0001 [ 61.459069] Call Trace: [ 61.505273] [] ? __bpf_prog_run+0x7a1/0x1360 [ 61.625511] [] ? update_curr+0x79/0x170 [ 61.741423] [] ? update_cfs_shares+0xbc/0x100 [ 61.837892] [] ? __schedule+0x30d/0x7f0 [ 61.941349] [] ? __schedule+0x301/0x7f0 [ 62.073874] [] ? __schedule+0x30d/0x7f0 [ 62.185260] [] ? __schedule+0x301/0x7f0 [ 62.186239] [] ? __schedule+0x30d/0x7f0 [ 62.305193] [] ? __schedule+0x301/0x7f0 [ 62.399854] [] ? __schedule+0x30d/0x7f0 [ 62.406219] [] ? __schedule+0x301/0x7f0 [ 62.407994] [] ? __schedule+0x30d/0x7f0 [ 62.410491] [] ? __schedule+0x301/0x7f0 [ 62.431220] [] ? __schedule+0x30d/0x7f0 [ 62.497078] [] ? __schedule+0x30d/0x7f0 [ 62.559245] [] ? __schedule+0x301/0x7f0 [ 62.661493] [] ? __schedule+0x30d/0x7f0 [ 62.712927] [] ? __schedule+0x301/0x7f0 [ 62.799216] [] trace_call_bpf+0x37/0x50 [ 62.881570] [] kprobe_perf_func+0x37/0x250 [ 62.977365] [] ? finish_task_switch+0x76/0x230 [ 62.981405] [] ? __raw_callee_save___pv_q
[Group.of.nepali.translators] [Bug 1763454] Re: bpf_map_lookup_elem: BUG: unable to handle kernel paging request
** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Also affects: linux (Ubuntu Xenial) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Xenial) Status: New => Incomplete ** Changed in: linux (Ubuntu Xenial) Importance: Undecided => Medium ** Changed in: linux (Ubuntu Xenial) Status: Incomplete => Triaged ** Changed in: linux (Ubuntu) Status: Incomplete => Triaged -- You received this bug notification because you are a member of नेपाली भाषा समायोजकहरुको समूह, which is subscribed to Xenial. Matching subscriptions: Ubuntu 16.04 Bugs https://bugs.launchpad.net/bugs/1763454 Title: bpf_map_lookup_elem: BUG: unable to handle kernel paging request Status in linux package in Ubuntu: Triaged Status in linux source package in Xenial: Triaged Bug description: Hey, we are currently debugging an issue with Scope [1] where the initialization of the used tcptracer-bpf [2] leads to a kernel oops at the first call of `bpf_map_lookup_elem`. The OS is Ubuntu Xenial with kernel version `Ubuntu 4.4.0-119.143-generic 4.4.114`. `4.4.0-116.140` does not show the problem. Example: ``` [ 58.763045] BUG: unable to handle kernel paging request at 3c0c41a8 [ 58.846450] IP: [] bpf_map_lookup_elem+0x6/0x20 [ 58.909436] PGD 80003be04067 PUD 3bea1067 PMD 0 [ 58.914876] Oops: [#1] SMP [ 58.915581] Modules linked in: ipt_MASQUERADE nf_nat_masquerade_ipv4 nf_conntrack_netlink nfnetlink xfrm_user xfrm_algo iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 xt_addrtype iptable_filter ip_tables xt_conntrack x_tables nf_nat nf_conntrack br_netfilter bridge stp llc overlay vboxsf isofs ppdev crct10dif_pclmul crc32_pclmul ghash_clmulni_intel vboxguest input_leds serio_raw parport_pc parport video ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 btrfs raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear mptspi aesni_intel scsi_transport_spi mptscsih aes_x86_64 glue_helper lrw gf128mul ablk_helper cryptd mptbase psmouse e1000 [ 59.678145] CPU: 1 PID: 1810 Comm: scope Not tainted 4.4.0-119-generic #143-Ubuntu [ 59.790501] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 [ 59.846405] task: 88003ae23800 ti: 880022c84000 task.ti: 880022c84000 [ 60.000524] RIP: 0010:[] [] bpf_map_lookup_elem+0x6/0x20 [ 60.178029] RSP: 0018:880022c87960 EFLAGS: 00010082 [ 60.257957] RAX: 8117cd70 RBX: c922f090 RCX: [ 60.350704] RDX: RSI: 880022c87ba8 RDI: 3c0c4180 [ 60.449182] RBP: 880022c87be8 R08: R09: 0800 [ 60.547638] R10: 88003ae23800 R11: 88003ca12e10 R12: [ 60.570757] R13: 88003c601200 R14: 88003fd10020 R15: 880022c87d10 [ 60.678811] FS: 7f95ba372700() GS:88003fd0() knlGS: [ 60.778636] CS: 0010 DS: ES: CR0: 80050033 [ 60.866380] CR2: 3c0c41a8 CR3: 3aeae000 CR4: 00060670 [ 60.963736] DR0: DR1: DR2: [ 61.069195] DR3: DR6: fffe0ff0 DR7: 0400 [ 61.187006] Stack: [ 61.189256] 880022c87be8 81177411 0001 [ 61.253133] 3c0c4180 880022c87ba8 [ 61.345334] 880022c87d10 0001 [ 61.459069] Call Trace: [ 61.505273] [] ? __bpf_prog_run+0x7a1/0x1360 [ 61.625511] [] ? update_curr+0x79/0x170 [ 61.741423] [] ? update_cfs_shares+0xbc/0x100 [ 61.837892] [] ? __schedule+0x30d/0x7f0 [ 61.941349] [] ? __schedule+0x301/0x7f0 [ 62.073874] [] ? __schedule+0x30d/0x7f0 [ 62.185260] [] ? __schedule+0x301/0x7f0 [ 62.186239] [] ? __schedule+0x30d/0x7f0 [ 62.305193] [] ? __schedule+0x301/0x7f0 [ 62.399854] [] ? __schedule+0x30d/0x7f0 [ 62.406219] [] ? __schedule+0x301/0x7f0 [ 62.407994] [] ? __schedule+0x30d/0x7f0 [ 62.410491] [] ? __schedule+0x301/0x7f0 [ 62.431220] [] ? __schedule+0x30d/0x7f0 [ 62.497078] [] ? __schedule+0x30d/0x7f0 [ 62.559245] [] ? __schedule+0x301/0x7f0 [ 62.661493] [] ? __schedule+0x30d/0x7f0 [ 62.712927] [] ? __schedule+0x301/0x7f0 [ 62.799216] [] trace_call_bpf+0x37/0x50 [ 62.881570] [] kprobe_perf_func+0x37/0x250 [ 62.977365] [] ? finish_task_switch+0x76/0x230 [ 62.981405] [] ? __raw_callee_save___pv_queued_spin_unlock+0x11/0x20 [ 63.092978] [] kprobe_dispatcher+0x31/0x50 [ 63.184696] [] ? tcp_close+0x1/0x440 [ 63.260350] [] kprobe_ftrace_handler+0xb6/0x120 [ 63.275694] [] ? tcp_clos
