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Mon, 19 Jan 2026 07:30:08 +0000 Date: Mon, 19 Jan 2026 15:29:58 +0800 From: kernel test robot To: "Masami Hiramatsu (Google)" CC: , , Steven Rostedt , , , Naveen N Rao , "David S . 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[ 972.361221][ T32] Not tainted 6.19.0-rc5-00040-g62f65c2531ad #1 [ 972.362516][ T32] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 972.364322][ T32] task:kprobe-optimize state:D stack:0 pid:18 tgid:18 ppid:2 task_flags:0x208040 flags:0x00080000 [ 972.366628][ T32] Call Trace: [ 972.367378][ T32] [ 972.368066][ T32] __schedule (kernel/sched/core.c:5259) [ 972.370837][ T32] schedule (arch/x86/include/asm/preempt.h:85 kernel/sched/core.c:6946 kernel/sched/core.c:6960) [ 972.371679][ T32] kprobe_optimizer_thread (kernel/kprobes.c:656) [ 972.373219][ T32] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:402) [ 972.374017][ T32] kthread (kernel/kthread.c:465) [ 972.374573][ T32] ? __pfx_kprobe_optimizer_thread (kernel/kprobes.c:654) [ 972.375364][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 972.376005][ T32] ret_from_fork (arch/x86/kernel/process.c:164) [ 972.376679][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 972.377305][ T32] ret_from_fork_asm (arch/x86/entry/entry_64.S:256) [ 972.377958][ T32] [ 1463.879952][ T32] INFO: task kprobe-optimize:18 blocked for more than 983 seconds. [ 1463.882239][ T32] Not tainted 6.19.0-rc5-00040-g62f65c2531ad #1 [ 1463.884371][ T32] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1463.887443][ T32] task:kprobe-optimize state:D stack:0 pid:18 tgid:18 ppid:2 task_flags:0x208040 flags:0x00080000 [ 1463.891867][ T32] Call Trace: [ 1463.893396][ T32] [ 1463.894468][ T32] __schedule (kernel/sched/core.c:5259) [ 1463.903984][ T32] schedule (arch/x86/include/asm/preempt.h:85 kernel/sched/core.c:6946 kernel/sched/core.c:6960) [ 1463.904926][ T32] kprobe_optimizer_thread (kernel/kprobes.c:656) [ 1463.905949][ T32] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:402) [ 1463.907111][ T32] kthread (kernel/kthread.c:465) [ 1463.907954][ T32] ? __pfx_kprobe_optimizer_thread (kernel/kprobes.c:654) [ 1463.909157][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 1463.910045][ T32] ret_from_fork (arch/x86/kernel/process.c:164) [ 1463.910939][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 1463.911933][ T32] ret_from_fork_asm (arch/x86/entry/entry_64.S:256) [ 1463.912947][ T32] [ 1955.399991][ T32] INFO: task kprobe-optimize:18 blocked for more than 1474 seconds. [ 1955.404266][ T32] Not tainted 6.19.0-rc5-00040-g62f65c2531ad #1 [ 1955.407452][ T32] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1955.414557][ T32] task:kprobe-optimize state:D stack:0 pid:18 tgid:18 ppid:2 task_flags:0x208040 flags:0x00080000 [ 1955.416961][ T32] Call Trace: [ 1955.417705][ T32] [ 1955.418382][ T32] __schedule (kernel/sched/core.c:5259) [ 1955.419274][ T32] schedule (arch/x86/include/asm/preempt.h:85 kernel/sched/core.c:6946 kernel/sched/core.c:6960) [ 1955.419929][ T32] kprobe_optimizer_thread (kernel/kprobes.c:656) [ 1955.421071][ T32] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:402) [ 1955.422303][ T32] kthread (kernel/kthread.c:465) [ 1955.423217][ T32] ? __pfx_kprobe_optimizer_thread (kernel/kprobes.c:654) [ 1955.424452][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 1955.425189][ T32] ret_from_fork (arch/x86/kernel/process.c:164) [ 1955.425913][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 1955.426645][ T32] ret_from_fork_asm (arch/x86/entry/entry_64.S:256) [ 1955.427357][ T32] [ 2446.919964][ T32] INFO: task kprobe-optimize:18 blocked for more than 1966 seconds. [ 2446.922105][ T32] Not tainted 6.19.0-rc5-00040-g62f65c2531ad #1 [ 2446.925697][ T32] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 2446.926569][ T32] task:kprobe-optimize state:D stack:0 pid:18 tgid:18 ppid:2 task_flags:0x208040 flags:0x00080000 [ 2446.927775][ T32] Call Trace: [ 2446.928242][ T32] [ 2446.928609][ T32] __schedule (kernel/sched/core.c:5259) [ 2446.929827][ T32] schedule (arch/x86/include/asm/preempt.h:85 kernel/sched/core.c:6946 kernel/sched/core.c:6960) [ 2446.930256][ T32] kprobe_optimizer_thread (kernel/kprobes.c:656) [ 2446.930789][ T32] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:402) [ 2446.931434][ T32] kthread (kernel/kthread.c:465) [ 2446.931926][ T32] ? __pfx_kprobe_optimizer_thread (kernel/kprobes.c:654) [ 2446.932624][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 2446.933079][ T32] ret_from_fork (arch/x86/kernel/process.c:164) [ 2446.933534][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 2446.933983][ T32] ret_from_fork_asm (arch/x86/entry/entry_64.S:256) [ 2446.934450][ T32] [ 2938.439916][ T32] INFO: task kprobe-optimize:18 blocked for more than 2457 seconds. [ 2938.441278][ T32] Not tainted 6.19.0-rc5-00040-g62f65c2531ad #1 [ 2938.442281][ T32] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 2938.444599][ T32] task:kprobe-optimize state:D stack:0 pid:18 tgid:18 ppid:2 task_flags:0x208040 flags:0x00080000 [ 2938.446316][ T32] Call Trace: [ 2938.446892][ T32] [ 2938.447449][ T32] __schedule (kernel/sched/core.c:5259) [ 2938.449286][ T32] schedule (arch/x86/include/asm/preempt.h:85 kernel/sched/core.c:6946 kernel/sched/core.c:6960) [ 2938.450230][ T32] kprobe_optimizer_thread (kernel/kprobes.c:656) [ 2938.451347][ T32] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:402) [ 2938.452611][ T32] kthread (kernel/kthread.c:465) [ 2938.453462][ T32] ? __pfx_kprobe_optimizer_thread (kernel/kprobes.c:654) [ 2938.454622][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 2938.455583][ T32] ret_from_fork (arch/x86/kernel/process.c:164) [ 2938.456604][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 2938.457614][ T32] ret_from_fork_asm (arch/x86/entry/entry_64.S:256) [ 2938.458645][ T32] [ 3429.960057][ T32] INFO: task kprobe-optimize:18 blocked for more than 2949 seconds. [ 3429.962853][ T32] Not tainted 6.19.0-rc5-00040-g62f65c2531ad #1 [ 3429.965133][ T32] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 3429.967986][ T32] task:kprobe-optimize state:D stack:0 pid:18 tgid:18 ppid:2 task_flags:0x208040 flags:0x00080000 [ 3429.971731][ T32] Call Trace: [ 3429.973021][ T32] [ 3429.974169][ T32] __schedule (kernel/sched/core.c:5259) [ 3429.975713][ T32] schedule (arch/x86/include/asm/preempt.h:85 kernel/sched/core.c:6946 kernel/sched/core.c:6960) [ 3429.977206][ T32] kprobe_optimizer_thread (kernel/kprobes.c:656) [ 3429.978375][ T32] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:402) [ 3429.979623][ T32] kthread (kernel/kthread.c:465) [ 3429.980602][ T32] ? __pfx_kprobe_optimizer_thread (kernel/kprobes.c:654) [ 3429.981810][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 3429.982797][ T32] ret_from_fork (arch/x86/kernel/process.c:164) [ 3429.983793][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 3429.984838][ T32] ret_from_fork_asm (arch/x86/entry/entry_64.S:256) [ 3429.985864][ T32] [ 3921.480064][ T32] INFO: task kprobe-optimize:18 blocked for more than 3440 seconds. [ 3921.482942][ T32] Not tainted 6.19.0-rc5-00040-g62f65c2531ad #1 [ 3921.485260][ T32] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 3921.488269][ T32] task:kprobe-optimize state:D stack:0 pid:18 tgid:18 ppid:2 task_flags:0x208040 flags:0x00080000 [ 3921.491811][ T32] Call Trace: [ 3921.493488][ T32] [ 3921.494960][ T32] __schedule (kernel/sched/core.c:5259) [ 3921.508616][ T32] schedule (arch/x86/include/asm/preempt.h:85 kernel/sched/core.c:6946 kernel/sched/core.c:6960) [ 3921.509430][ T32] kprobe_optimizer_thread (kernel/kprobes.c:656) [ 3921.510413][ T32] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:402) [ 3921.511467][ T32] kthread (kernel/kthread.c:465) [ 3921.512331][ T32] ? __pfx_kprobe_optimizer_thread (kernel/kprobes.c:654) [ 3921.513388][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 3921.514202][ T32] ret_from_fork (arch/x86/kernel/process.c:164) [ 3921.514976][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 3921.515773][ T32] ret_from_fork_asm (arch/x86/entry/entry_64.S:256) [ 3921.516817][ T32] [ 4413.000017][ T32] INFO: task kprobe-optimize:18 blocked for more than 3932 seconds. [ 4413.004653][ T32] Not tainted 6.19.0-rc5-00040-g62f65c2531ad #1 [ 4413.007745][ T32] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 4413.010446][ T32] task:kprobe-optimize state:D stack:0 pid:18 tgid:18 ppid:2 task_flags:0x208040 flags:0x00080000 [ 4413.013906][ T32] Call Trace: [ 4413.015027][ T32] [ 4413.016134][ T32] __schedule (kernel/sched/core.c:5259) [ 4413.017465][ T32] schedule (arch/x86/include/asm/preempt.h:85 kernel/sched/core.c:6946 kernel/sched/core.c:6960) [ 4413.018294][ T32] kprobe_optimizer_thread (kernel/kprobes.c:656) [ 4413.019366][ T32] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:402) [ 4413.020594][ T32] kthread (kernel/kthread.c:465) [ 4413.021350][ T32] ? __pfx_kprobe_optimizer_thread (kernel/kprobes.c:654) [ 4413.022331][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 4413.023124][ T32] ret_from_fork (arch/x86/kernel/process.c:164) [ 4413.023925][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 4413.025015][ T32] ret_from_fork_asm (arch/x86/entry/entry_64.S:256) [ 4413.026074][ T32] [ 4904.520028][ T32] INFO: task kprobe-optimize:18 blocked for more than 4423 seconds. [ 4904.521949][ T32] Not tainted 6.19.0-rc5-00040-g62f65c2531ad #1 [ 4904.528612][ T32] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 4904.529924][ T32] task:kprobe-optimize state:D stack:0 pid:18 tgid:18 ppid:2 task_flags:0x208040 flags:0x00080000 [ 4904.531461][ T32] Call Trace: [ 4904.531896][ T32] [ 4904.532406][ T32] __schedule (kernel/sched/core.c:5259) [ 4904.532947][ T32] schedule (arch/x86/include/asm/preempt.h:85 kernel/sched/core.c:6946 kernel/sched/core.c:6960) [ 4904.533381][ T32] kprobe_optimizer_thread (kernel/kprobes.c:656) [ 4904.533944][ T32] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:402) [ 4904.534547][ T32] kthread (kernel/kthread.c:465) [ 4904.534985][ T32] ? __pfx_kprobe_optimizer_thread (kernel/kprobes.c:654) [ 4904.535670][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 4904.536359][ T32] ret_from_fork (arch/x86/kernel/process.c:164) [ 4904.536831][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 4904.537310][ T32] ret_from_fork_asm (arch/x86/entry/entry_64.S:256) [ 4904.537788][ T32] [ 5396.039936][ T32] INFO: task kprobe-optimize:18 blocked for more than 4915 seconds. [ 5396.040939][ T32] Not tainted 6.19.0-rc5-00040-g62f65c2531ad #1 [ 5396.041631][ T32] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 5396.042742][ T32] task:kprobe-optimize state:D stack:0 pid:18 tgid:18 ppid:2 task_flags:0x208040 flags:0x00080000 [ 5396.045182][ T32] Call Trace: [ 5396.045723][ T32] [ 5396.046266][ T32] __schedule (kernel/sched/core.c:5259) [ 5396.046928][ T32] schedule (arch/x86/include/asm/preempt.h:85 kernel/sched/core.c:6946 kernel/sched/core.c:6960) [ 5396.047542][ T32] kprobe_optimizer_thread (kernel/kprobes.c:656) [ 5396.048329][ T32] ? __pfx_autoremove_wake_function (kernel/sched/wait.c:402) [ 5396.049182][ T32] kthread (kernel/kthread.c:465) [ 5396.049803][ T32] ? __pfx_kprobe_optimizer_thread (kernel/kprobes.c:654) [ 5396.050654][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 5396.051353][ T32] ret_from_fork (arch/x86/kernel/process.c:164) [ 5396.052048][ T32] ? __pfx_kthread (kernel/kthread.c:412) [ 5396.052723][ T32] ret_from_fork_asm (arch/x86/entry/entry_64.S:256) [ 5396.053187][ T32] [ 5396.053524][ T32] Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings BUG: kernel hang in test stage The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260119/202601191507.74fccd0c-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki