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[1] https://lore.kernel.org/all/202602032236.bcc0d1b7-lkp@intel.com/ kernel test robot noticed "INFO:task_blocked_for_more_than#seconds" on: commit: 4823725d9d1d9cc5b36647e0cb8ff616cad6536f ("sched/fair: Increase weight bits for avg_vruntime") https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master [test failed on linus/master f1a5e78a55ebf2b05777fd5eb738038ddae609d6] [test failed on linux-next/master b9303e6bff706758c167af686b5315ad00233bf8] [test failed on fix commit 556146ce5e9476db234134c46ddf0e154ca17028] in testcase: boot config: i386-randconfig-2006-20250804 compiler: gcc-14 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 32G (please refer to attached dmesg/kmsg for entire log/backtrace) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202605052050.8156b7e0-lkp@intel.com [ 983.510203][ T24] INFO: task kworker/u4:2:45 blocked for more than 492 seconds. [ 983.696012][ T24] Not tainted 7.0.0-rc1+ #1 [ 983.730478][ T24] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 983.906134][ T24] task:kworker/u4:2 state:D stack:0 pid:45 tgid:45 ppid:44 task_flags:0x8040 flags:0x00080000 [ 984.159850][ T24] Call Trace: [ 984.407777][ T24] __schedule (sched/core.c:5295 sched/core.c:6908) [ 984.706338][ T24] ? sched_submit_work (linux/blkdev.h:1205 sched/core.c:6969) [ 984.907449][ T24] schedule (sched/core.c:6990 sched/core.c:7005) [ 985.006131][ T24] async_synchronize_cookie_domain (async.c:317 (discriminator 7)) [ 985.104747][ T24] ? swake_up_all (sched/swait.c:82) [ 985.203211][ T24] wait_for_initramfs (initramfs.c:778) [ 985.307882][ T24] call_usermodehelper_exec_async (umh.c:108) [ 985.394170][ T24] ? umh_complete (umh.c:58) [ 985.706723][ T24] ret_from_fork (x86/kernel/process.c:158) [ 985.779811][ T24] ? umh_complete (umh.c:58) [ 986.710694][ T24] ret_from_fork_asm (x86/entry/entry_32.S:736) [ 987.013319][ T24] entry_INT80_32 (x86/entry/entry_32.S:940) [ 987.306125][ T24] [ 987.306125][ T24] Showing all locks held in the system: [ 987.502551][ T24] 4 locks held by kworker/u4:0/12: [ 987.544601][ T24] 1 lock held by khungtaskd/24: [ 987.693891][ T24] #0: b22ae69c (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire (linux/rcupdate.h:311) [ 987.857208][ T24] 2 locks held by kworker/u4:2/44: [ 988.011251][ T24] #0: b30d6cc0 ((wq_completion)events_unbound#2){+.+.}-{0:0}, at: process_one_work (workqueue.c:3249) [ 988.109740][ T24] #1: b39c5f18 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work (workqueue.c:3250) [ 988.412819][ T24] [ 988.545186][ T24] ============================================= [ 988.545186][ T24] BUG: kernel hang in boot stage The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260505/202605052050.8156b7e0-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki