I ran the trace in the bug description through decode_stacktrace.sh, which seems to provide a good hint for what's happening. The null pointer dereference occurs when trying to access dev->init_name in function dev_name of include/linux/device.h, which is called while triggering the wbt_timer trace event defined in include/trace/events/wbt.h. The trace event is triggered by the wb_timer_fn function in block/blk-wbt.c.
The trace indicates the `dev` provided to dev_name is NULL, so from the perspective of wb_timer_fn, rwb->rqos.q->backing_dev_info->dev is NULL. [ 7112.186092] Scheduler tracepoints stat_sleep, stat_iowait, stat_blocked and stat_runtime require the kernel parameter schedstats=enable or kernel.sched_schedstats=1 [ 7128.566260] BUG: kernel NULL pointer dereference, address: 0000000000000050 [ 7128.574031] #PF: supervisor read access in kernel mode [ 7128.579763] #PF: error_code(0x0000) - not-present page [ 7128.585495] PGD 0 P4D 0 [ 7128.588320] Oops: 0000 [#1] SMP NOPTI [ 7128.592405] CPU: 129 PID: 0 Comm: swapper/129 Tainted: G OE 5.4.0-190-generic #210-Ubuntu [ 7128.602887] Hardware name: NVIDIA DGXA100 920-23687-2530-000/DGXA100, BIOS 1.25 08/31/2023 [ 7128.612119] RIP: 0010:trace_event_raw_event_wbt_timer (/build/linux-0OIRCA/linux-5.4.0/include/linux/device.h:1345 (discriminator 5) /build/linux-0OIRCA/linux-5.4.0/include/trace/events/wbt.h:129 (discriminator 5)) [ 7128.618820] Code: 59 80 e5 02 0f 85 8f 00 00 00 4c 89 e6 ba 34 00 00 00 48 8d 7d a0 e8 b0 ab c9 ff 49 89 c4 48 85 c0 74 37 49 8b 87 b8 03 00 00 <48> 8b 70 50 48 85 f6 74 45 49 8d 7c 24 08 ba 20 00 00 00 e8 c9 12 All code ======== 0: 59 pop %rcx 1: 80 e5 02 and $0x2,%ch 4: 0f 85 8f 00 00 00 jne 0x99 a: 4c 89 e6 mov %r12,%rsi d: ba 34 00 00 00 mov $0x34,%edx 12: 48 8d 7d a0 lea -0x60(%rbp),%rdi 16: e8 b0 ab c9 ff callq 0xffffffffffc9abcb 1b: 49 89 c4 mov %rax,%r12 1e: 48 85 c0 test %rax,%rax 21: 74 37 je 0x5a 23: 49 8b 87 b8 03 00 00 mov 0x3b8(%r15),%rax 2a:* 48 8b 70 50 mov 0x50(%rax),%rsi <-- trapping instruction 2e: 48 85 f6 test %rsi,%rsi 31: 74 45 je 0x78 33: 49 8d 7c 24 08 lea 0x8(%r12),%rdi 38: ba 20 00 00 00 mov $0x20,%edx 3d: e8 .byte 0xe8 3e: c9 leaveq 3f: 12 .byte 0x12 Code starting with the faulting instruction =========================================== 0: 48 8b 70 50 mov 0x50(%rax),%rsi 4: 48 85 f6 test %rsi,%rsi 7: 74 45 je 0x4e 9: 49 8d 7c 24 08 lea 0x8(%r12),%rdi e: ba 20 00 00 00 mov $0x20,%edx 13: e8 .byte 0xe8 14: c9 leaveq 15: 12 .byte 0x12 [ 7128.639774] RSP: 0018:ffffb1779b140da0 EFLAGS: 00010282 [ 7128.645604] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000080000100 [ 7128.653565] RDX: ffff8fe7ae7052f8 RSI: 0000000000000100 RDI: ffff8fe7ae7052f4 [ 7128.661525] RBP: ffffb1779b140e08 R08: ffff8fe7ae7052f4 R09: 0000000000000100 [ 7128.669486] R10: ffffd1777fdcb960 R11: 0000000000000000 R12: ffff8fe7ae7052f8 [ 7128.677445] R13: 00000000ffffffff R14: 0000000000000002 R15: ffff9047fe8f5000 [ 7128.685409] FS: 0000000000000000(0000) GS:ffff8fe80f840000(0000) knlGS:0000000000000000 [ 7128.694437] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 7128.700847] CR2: 0000000000000050 CR3: 000000cb2760a000 CR4: 0000000000340ee0 [ 7128.708809] Call Trace: [ 7128.711535] <IRQ> [ 7128.713782] ? show_regs.cold (/build/linux-0OIRCA/linux-5.4.0/arch/x86/kernel/dumpstack.c:426 /build/linux-0OIRCA/linux-5.4.0/arch/x86/kernel/dumpstack.c:416) [ 7128.718058] ? __die (/build/linux-0OIRCA/linux-5.4.0/arch/x86/kernel/dumpstack.c:392) [ 7128.721467] ? no_context (/build/linux-0OIRCA/linux-5.4.0/arch/x86/mm/fault.c:846) [ 7128.725555] ? ring_buffer_lock_reserve (/build/linux-0OIRCA/linux-5.4.0/kernel/trace/ring_buffer.c:3066 /build/linux-0OIRCA/linux-5.4.0/kernel/trace/ring_buffer.c:3126) [ 7128.730996] ? ring_buffer_unlock_commit (/build/linux-0OIRCA/linux-5.4.0/kernel/trace/ring_buffer.c:2717 /build/linux-0OIRCA/linux-5.4.0/kernel/trace/ring_buffer.c:2916) [ 7128.736436] ? __bad_area_nosemaphore (/build/linux-0OIRCA/linux-5.4.0/arch/x86/mm/fault.c:935) [ 7128.741585] ? bad_area_nosemaphore (/build/linux-0OIRCA/linux-5.4.0/arch/x86/mm/fault.c:942) [ 7128.746445] ? do_user_addr_fault (/build/linux-0OIRCA/linux-5.4.0/arch/x86/mm/fault.c:1508) [ 7128.751306] ? trace_event_raw_event_x86_exceptions (/build/linux-0OIRCA/linux-5.4.0/arch/x86/mm/../include/asm/trace/./exceptions.h:14) [ 7128.757718] ? __do_page_fault (/build/linux-0OIRCA/linux-5.4.0/arch/x86/mm/fault.c:1529) [ 7128.762092] ? do_page_fault (/build/linux-0OIRCA/linux-5.4.0/arch/x86/mm/fault.c:1554) [ 7128.766276] ? page_fault (/build/linux-0OIRCA/linux-5.4.0/arch/x86/entry/entry_64.S:1207) [ 7128.770167] ? trace_event_raw_event_wbt_timer (/build/linux-0OIRCA/linux-5.4.0/include/linux/device.h:1345 (discriminator 5) /build/linux-0OIRCA/linux-5.4.0/include/trace/events/wbt.h:129 (discriminator 5)) [ 7128.776190] wb_timer_fn (/build/linux-0OIRCA/linux-5.4.0/include/trace/events/wbt.h:129 /build/linux-0OIRCA/linux-5.4.0/block/blk-wbt.c:362) [ 7128.780179] ? blk_mq_tag_update_depth (/build/linux-0OIRCA/linux-5.4.0/block/blk-stat.c:80) [ 7128.785522] blk_stat_timer_fn (/build/linux-0OIRCA/linux-5.4.0/block/blk-stat.c:99) [ 7128.790094] call_timer_fn (/build/linux-0OIRCA/linux-5.4.0/arch/x86/include/asm/jump_label.h:25 /build/linux-0OIRCA/linux-5.4.0/include/linux/jump_label.h:200 /build/linux-0OIRCA/linux-5.4.0/include/trace/events/timer.h:125 /build/linux-0OIRCA/linux-5.4.0/kernel/time/timer.c:1449) [ 7128.794179] __run_timers.part.0 (/build/linux-0OIRCA/linux-5.4.0/kernel/time/timer.c:1494 /build/linux-0OIRCA/linux-5.4.0/kernel/time/timer.c:1819) [ 7128.798945] ? trace_event_raw_event_softirq (/build/linux-0OIRCA/linux-5.4.0/include/trace/events/irq.h:103) [ 7128.804677] run_timer_softirq (/build/linux-0OIRCA/linux-5.4.0/kernel/time/timer.c:1834) [ 7128.809053] __do_softirq (/build/linux-0OIRCA/linux-5.4.0/arch/x86/include/asm/jump_label.h:25 /build/linux-0OIRCA/linux-5.4.0/include/linux/jump_label.h:200 /build/linux-0OIRCA/linux-5.4.0/include/trace/events/irq.h:142 /build/linux-0OIRCA/linux-5.4.0/kernel/softirq.c:293) [ 7128.813041] irq_exit (/build/linux-0OIRCA/linux-5.4.0/kernel/softirq.c:373 /build/linux-0OIRCA/linux-5.4.0/kernel/softirq.c:413) [ 7128.816545] smp_apic_timer_interrupt (/build/linux-0OIRCA/linux-5.4.0/arch/x86/include/asm/irq_regs.h:27 /build/linux-0OIRCA/linux-5.4.0/arch/x86/kernel/apic/apic.c:1151) [ 7128.821696] apic_timer_interrupt (/build/linux-0OIRCA/linux-5.4.0/arch/x86/entry/entry_64.S:835) [ 7128.826264] </IRQ> [ 7128.828603] RIP: 0010:native_safe_halt (/build/linux-0OIRCA/linux-5.4.0/arch/x86/include/asm/irqflags.h:61) [ 7128.833655] Code: 7b ff ff ff eb bd 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d a6 14 50 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 96 14 50 00 fb f4 <c3> 90 0f 1f 44 00 00 55 48 89 e5 41 55 41 54 53 e8 ed 46 61 ff 65 All code ======== 0: 7b ff jnp 0x1 2: ff (bad) 3: ff (bad) 4: eb bd jmp 0xffffffffffffffc3 6: 90 nop 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: e9 07 00 00 00 jmpq 0x18 11: 0f 00 2d a6 14 50 00 verw 0x5014a6(%rip) # 0x5014be 18: f4 hlt 19: c3 retq 1a: 66 90 xchg %ax,%ax 1c: e9 07 00 00 00 jmpq 0x28 21: 0f 00 2d 96 14 50 00 verw 0x501496(%rip) # 0x5014be 28: fb sti 29: f4 hlt 2a:* c3 retq <-- trapping instruction 2b: 90 nop 2c: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 31: 55 push %rbp 32: 48 89 e5 mov %rsp,%rbp 35: 41 55 push %r13 37: 41 54 push %r12 39: 53 push %rbx 3a: e8 ed 46 61 ff callq 0xffffffffff61472c 3f: 65 gs Code starting with the faulting instruction =========================================== 0: c3 retq 1: 90 nop 2: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 7: 55 push %rbp 8: 48 89 e5 mov %rsp,%rbp b: 41 55 push %r13 d: 41 54 push %r12 f: 53 push %rbx 10: e8 ed 46 61 ff callq 0xffffffffff614702 15: 65 gs [ 7128.854607] RSP: 0018:ffffb177992fbe70 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 [ 7128.863053] RAX: 0000000000023800 RBX: ffff90676cadbf28 RCX: 000000000003514a [ 7128.871013] RDX: 000000000003514a RSI: 0000000000000000 RDI: ffffffffb06c6120 [ 7128.878974] RBP: ffffb177992fbe90 R08: 00000000000001ac R09: 0000000000000000 [ 7128.886936] R10: 0000000000020000 R11: 0000000000000002 R12: 0000000000000081 [ 7128.894895] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 7128.902858] ? default_idle (/build/linux-0OIRCA/linux-5.4.0/arch/x86/include/asm/paravirt.h:144 /build/linux-0OIRCA/linux-5.4.0/arch/x86/kernel/process.c:572) [ 7128.907040] arch_cpu_idle (/build/linux-0OIRCA/linux-5.4.0/arch/x86/kernel/process.c:564) [ 7128.911027] default_idle_call (/build/linux-0OIRCA/linux-5.4.0/kernel/sched/idle.c:97) [ 7128.915403] do_idle (/build/linux-0OIRCA/linux-5.4.0/kernel/sched/idle.c:155 /build/linux-0OIRCA/linux-5.4.0/kernel/sched/idle.c:264) [ 7128.919004] ? complete (/build/linux-0OIRCA/linux-5.4.0/kernel/sched/completion.c:38) [ 7128.922699] cpu_startup_entry (/build/linux-0OIRCA/linux-5.4.0/kernel/sched/idle.c:355 (discriminator 1)) [ 7128.927074] start_secondary (/build/linux-0OIRCA/linux-5.4.0/arch/x86/kernel/smpboot.c:285) [ 7128.931452] secondary_startup_64 (/build/linux-0OIRCA/linux-5.4.0/arch/x86/kernel/head_64.S:241) [ 7128.936116] Modules linked in: nls_iso8859_1 dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua amd64_edac_mod edac_mce_amd kvm_amd kvm ipmi_ssif input_leds binfmt_misc mlx5_ib(OE) ib_uverbs(OE) ib_core(OE) ccp k10temp ipmi_si ipmi_devintf ipmi_msghandler mac_hid sch_fq_codel msr ramoops reed_solomon efi_pstore ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ses enclosure ast crct10dif_pclmul crc32_pclmul drm_vram_helper ghash_clmulni_intel mlx5_core(OE) ttm aesni_intel crypto_simd drm_kms_helper pci_hyperv_intf mlxdevm(OE) cryptd syscopyarea sysfillrect auxiliary(OE) glue_helper igb tls sysimgblt uas hid_generic mpt3sas mlxfw(OE) psample dca raid_class usbhid fb_sys_fops scsi_transport_sas nvme i2c_algo_bit usb_storage hid drm mlx_compat(OE) nvme_core i2c_piix4 [ 7129.023659] CR2: 0000000000000050 [ 7129.027471] ---[ end trace 5d27e00102fa9701 ]--- [ 7129.052391] RIP: 0010:trace_event_raw_event_wbt_timer (/build/linux-0OIRCA/linux-5.4.0/include/linux/device.h:1345 (discriminator 5) /build/linux-0OIRCA/linux-5.4.0/include/trace/events/wbt.h:129 (discriminator 5)) [ 7129.059093] Code: 59 80 e5 02 0f 85 8f 00 00 00 4c 89 e6 ba 34 00 00 00 48 8d 7d a0 e8 b0 ab c9 ff 49 89 c4 48 85 c0 74 37 49 8b 87 b8 03 00 00 <48> 8b 70 50 48 85 f6 74 45 49 8d 7c 24 08 ba 20 00 00 00 e8 c9 12 All code ======== 0: 59 pop %rcx 1: 80 e5 02 and $0x2,%ch 4: 0f 85 8f 00 00 00 jne 0x99 a: 4c 89 e6 mov %r12,%rsi d: ba 34 00 00 00 mov $0x34,%edx 12: 48 8d 7d a0 lea -0x60(%rbp),%rdi 16: e8 b0 ab c9 ff callq 0xffffffffffc9abcb 1b: 49 89 c4 mov %rax,%r12 1e: 48 85 c0 test %rax,%rax 21: 74 37 je 0x5a 23: 49 8b 87 b8 03 00 00 mov 0x3b8(%r15),%rax 2a:* 48 8b 70 50 mov 0x50(%rax),%rsi <-- trapping instruction 2e: 48 85 f6 test %rsi,%rsi 31: 74 45 je 0x78 33: 49 8d 7c 24 08 lea 0x8(%r12),%rdi 38: ba 20 00 00 00 mov $0x20,%edx 3d: e8 .byte 0xe8 3e: c9 leaveq 3f: 12 .byte 0x12 Code starting with the faulting instruction =========================================== 0: 48 8b 70 50 mov 0x50(%rax),%rsi 4: 48 85 f6 test %rsi,%rsi 7: 74 45 je 0x4e 9: 49 8d 7c 24 08 lea 0x8(%r12),%rdi e: ba 20 00 00 00 mov $0x20,%edx 13: e8 .byte 0xe8 14: c9 leaveq 15: 12 .byte 0x12 [ 7129.080046] RSP: 0018:ffffb1779b140da0 EFLAGS: 00010282 [ 7129.085875] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000080000100 [ 7129.093835] RDX: ffff8fe7ae7052f8 RSI: 0000000000000100 RDI: ffff8fe7ae7052f4 [ 7129.101795] RBP: ffffb1779b140e08 R08: ffff8fe7ae7052f4 R09: 0000000000000100 [ 7129.109757] R10: ffffd1777fdcb960 R11: 0000000000000000 R12: ffff8fe7ae7052f8 [ 7129.117718] R13: 00000000ffffffff R14: 0000000000000002 R15: ffff9047fe8f5000 [ 7129.125680] FS: 0000000000000000(0000) GS:ffff8fe80f840000(0000) knlGS:0000000000000000 [ 7129.134706] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 7129.141115] CR2: 0000000000000050 CR3: 000000cb2760a000 CR4: 0000000000340ee0 [ 7129.149075] Kernel panic - not syncing: Fatal exception in interrupt [ 7129.158266] Kernel Offset: 0x2dc00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 7129.193426] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]--- -- You received this bug notification because you are a member of Canonical Platform QA Team, which is subscribed to ubuntu-kernel-tests. https://bugs.launchpad.net/bugs/2072972 Title: ftrace:test.d--ftrace--func_traceonoff_triggers.tc in ubuntu_kselftests_ftrace triggers kernel NULL pointer dereference on node blanka Status in ubuntu-kernel-tests: New Bug description: Issue found on node "blanka" with Focal 5.4.0-190.210 in s2024.06.10 After some manual tests I noticed that this issue is not 100% reproducible: * Focal 5.4.0-189.209 + -189 source failed with 5 out of 5 attempts * Focal 5.4.0-190.210 + -190 source failed with 2 out of 5 attempts * Focal 5.4.0-192.212 + -192 source failed with 3 out of 5 attempts Despite with this high fail rate, I can't see this failure in our test history all the way back to 2024.01.08 (except with 5.4.0-190.210), perhaps we retest it and it has passed? $ sudo ./ftracetest -v test.d/ftrace/func_traceonoff_triggers.tc === Ftrace unit tests === [1] ftrace - test for function traceon/off triggers dmesg output: [ 7112.186092] Scheduler tracepoints stat_sleep, stat_iowait, stat_blocked and stat_runtime require the kernel parameter schedstats=enable or kernel.sched_schedstats=1 [ 7128.566260] BUG: kernel NULL pointer dereference, address: 0000000000000050 [ 7128.574031] #PF: supervisor read access in kernel mode [ 7128.579763] #PF: error_code(0x0000) - not-present page [ 7128.585495] PGD 0 P4D 0 [ 7128.588320] Oops: 0000 [#1] SMP NOPTI [ 7128.592405] CPU: 129 PID: 0 Comm: swapper/129 Tainted: G OE 5.4.0-190-generic #210-Ubuntu [ 7128.602887] Hardware name: NVIDIA DGXA100 920-23687-2530-000/DGXA100, BIOS 1.25 08/31/2023 [ 7128.612119] RIP: 0010:trace_event_raw_event_wbt_timer+0x6f/0x100 [ 7128.618820] Code: 59 80 e5 02 0f 85 8f 00 00 00 4c 89 e6 ba 34 00 00 00 48 8d 7d a0 e8 b0 ab c9 ff 49 89 c4 48 85 c0 74 37 49 8b 87 b8 03 00 00 <48> 8b 70 50 48 85 f6 74 45 49 8d 7c 24 08 ba 20 00 00 00 e8 c9 12 [ 7128.639774] RSP: 0018:ffffb1779b140da0 EFLAGS: 00010282 [ 7128.645604] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000080000100 [ 7128.653565] RDX: ffff8fe7ae7052f8 RSI: 0000000000000100 RDI: ffff8fe7ae7052f4 [ 7128.661525] RBP: ffffb1779b140e08 R08: ffff8fe7ae7052f4 R09: 0000000000000100 [ 7128.669486] R10: ffffd1777fdcb960 R11: 0000000000000000 R12: ffff8fe7ae7052f8 [ 7128.677445] R13: 00000000ffffffff R14: 0000000000000002 R15: ffff9047fe8f5000 [ 7128.685409] FS: 0000000000000000(0000) GS:ffff8fe80f840000(0000) knlGS:0000000000000000 [ 7128.694437] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 7128.700847] CR2: 0000000000000050 CR3: 000000cb2760a000 CR4: 0000000000340ee0 [ 7128.708809] Call Trace: [ 7128.711535] <IRQ> [ 7128.713782] ? show_regs.cold+0x1a/0x1f [ 7128.718058] ? __die+0x90/0xd9 [ 7128.721467] ? no_context+0x196/0x380 [ 7128.725555] ? ring_buffer_lock_reserve+0x165/0x3d0 [ 7128.730996] ? ring_buffer_unlock_commit+0x27/0x130 [ 7128.736436] ? __bad_area_nosemaphore+0x50/0x1a0 [ 7128.741585] ? bad_area_nosemaphore+0x16/0x20 [ 7128.746445] ? do_user_addr_fault+0x267/0x450 [ 7128.751306] ? trace_event_raw_event_x86_exceptions+0x80/0xd0 [ 7128.757718] ? __do_page_fault+0x58/0x90 [ 7128.762092] ? do_page_fault+0x2c/0xe0 [ 7128.766276] ? page_fault+0x34/0x40 [ 7128.770167] ? trace_event_raw_event_wbt_timer+0x6f/0x100 [ 7128.776190] wb_timer_fn+0x1d6/0x3c0 [ 7128.780179] ? blk_mq_tag_update_depth+0x100/0x100 [ 7128.785522] blk_stat_timer_fn+0x13a/0x140 [ 7128.790094] call_timer_fn+0x32/0x130 [ 7128.794179] __run_timers.part.0+0x180/0x280 [ 7128.798945] ? trace_event_raw_event_softirq+0x5d/0xa0 [ 7128.804677] run_timer_softirq+0x2a/0x50 [ 7128.809053] __do_softirq+0xd1/0x2c1 [ 7128.813041] irq_exit+0xae/0xb0 [ 7128.816545] smp_apic_timer_interrupt+0x7b/0x140 [ 7128.821696] apic_timer_interrupt+0xf/0x20 [ 7128.826264] </IRQ> [ 7128.828603] RIP: 0010:native_safe_halt+0xe/0x10 [ 7128.833655] Code: 7b ff ff ff eb bd 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d a6 14 50 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 96 14 50 00 fb f4 <c3> 90 0f 1f 44 00 00 55 48 89 e5 41 55 41 54 53 e8 ed 46 61 ff 65 [ 7128.854607] RSP: 0018:ffffb177992fbe70 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 [ 7128.863053] RAX: 0000000000023800 RBX: ffff90676cadbf28 RCX: 000000000003514a [ 7128.871013] RDX: 000000000003514a RSI: 0000000000000000 RDI: ffffffffb06c6120 [ 7128.878974] RBP: ffffb177992fbe90 R08: 00000000000001ac R09: 0000000000000000 [ 7128.886936] R10: 0000000000020000 R11: 0000000000000002 R12: 0000000000000081 [ 7128.894895] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 7128.902858] ? default_idle+0x20/0x140 [ 7128.907040] arch_cpu_idle+0x15/0x20 [ 7128.911027] default_idle_call+0x23/0x30 [ 7128.915403] do_idle+0x1fb/0x270 [ 7128.919004] ? complete+0x49/0x50 [ 7128.922699] cpu_startup_entry+0x20/0x30 [ 7128.927074] start_secondary+0x178/0x1d0 [ 7128.931452] secondary_startup_64+0xa4/0xb0 [ 7128.936116] Modules linked in: nls_iso8859_1 dm_multipath scsi_dh_rdac scsi_dh_emc scsi_dh_alua amd64_edac_mod edac_mce_amd kvm_amd kvm ipmi_ssif input_leds binfmt_misc mlx5_ib(OE) ib_uverbs(OE) ib_core(OE) ccp k10temp ipmi_si ipmi_devintf ipmi_msghandler mac_hid sch_fq_codel msr ramoops reed_solomon efi_pstore ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear ses enclosure ast crct10dif_pclmul crc32_pclmul drm_vram_helper ghash_clmulni_intel mlx5_core(OE) ttm aesni_intel crypto_simd drm_kms_helper pci_hyperv_intf mlxdevm(OE) cryptd syscopyarea sysfillrect auxiliary(OE) glue_helper igb tls sysimgblt uas hid_generic mpt3sas mlxfw(OE) psample dca raid_class usbhid fb_sys_fops scsi_transport_sas nvme i2c_algo_bit usb_storage hid drm mlx_compat(OE) nvme_core i2c_piix4 [ 7129.023659] CR2: 0000000000000050 [ 7129.027471] ---[ end trace 5d27e00102fa9701 ]--- [ 7129.052391] RIP: 0010:trace_event_raw_event_wbt_timer+0x6f/0x100 [ 7129.059093] Code: 59 80 e5 02 0f 85 8f 00 00 00 4c 89 e6 ba 34 00 00 00 48 8d 7d a0 e8 b0 ab c9 ff 49 89 c4 48 85 c0 74 37 49 8b 87 b8 03 00 00 <48> 8b 70 50 48 85 f6 74 45 49 8d 7c 24 08 ba 20 00 00 00 e8 c9 12 [ 7129.080046] RSP: 0018:ffffb1779b140da0 EFLAGS: 00010282 [ 7129.085875] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000080000100 [ 7129.093835] RDX: ffff8fe7ae7052f8 RSI: 0000000000000100 RDI: ffff8fe7ae7052f4 [ 7129.101795] RBP: ffffb1779b140e08 R08: ffff8fe7ae7052f4 R09: 0000000000000100 [ 7129.109757] R10: ffffd1777fdcb960 R11: 0000000000000000 R12: ffff8fe7ae7052f8 [ 7129.117718] R13: 00000000ffffffff R14: 0000000000000002 R15: ffff9047fe8f5000 [ 7129.125680] FS: 0000000000000000(0000) GS:ffff8fe80f840000(0000) knlGS:0000000000000000 [ 7129.134706] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 7129.141115] CR2: 0000000000000050 CR3: 000000cb2760a000 CR4: 0000000000340ee0 [ 7129.149075] Kernel panic - not syncing: Fatal exception in interrupt [ 7129.158266] Kernel Offset: 0x2dc00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 7129.193426] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]--- To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/2072972/+subscriptions -- Mailing list: https://launchpad.net/~canonical-ubuntu-qa Post to : canonical-ubuntu-qa@lists.launchpad.net Unsubscribe : https://launchpad.net/~canonical-ubuntu-qa More help : https://help.launchpad.net/ListHelp
