INFO: rcu_sched detected stalls on CPUs/tasks: (detected by 0, t=100002 jiffies, g=38886, c=38885, q=141) All QSes seen, last rcu_sched kthread activity 100002 (4295062377-4294962375), jiffies_till_next_fqs=3, root ->qsmask 0x0 kworker/u4:3 R running task 58024 93 2 0x80000008 Workqueue: writeback wb_workfn (flush-8:0) Call Trace: sched_show_task+0x600/0x730 kernel/sched/core.c:5332 print_other_cpu_stall kernel/rcu/tree.c:1441 [inline] check_cpu_stall kernel/rcu/tree.c:1559 [inline] __rcu_pending kernel/rcu/tree.c:3244 [inline] rcu_pending kernel/rcu/tree.c:3291 [inline] rcu_check_callbacks+0x2627/0x2990 kernel/rcu/tree.c:2646 update_process_times+0x132/0x1a0 kernel/time/timer.c:1636 tick_sched_handle kernel/time/tick-sched.c:164 [inline] tick_sched_timer+0x3a6/0x500 kernel/time/tick-sched.c:1274 __run_hrtimer kernel/time/hrtimer.c:1398 [inline] __hrtimer_run_queues+0xbfc/0x15b0 kernel/time/hrtimer.c:1460 hrtimer_interrupt+0x458/0x13d0 kernel/time/hrtimer.c:1518 local_apic_timer_interrupt+0x6b/0x250 arch/x86/kernel/apic/apic.c:1028 smp_apic_timer_interrupt+0x5a/0x90 arch/x86/kernel/apic/apic.c:1056 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:868 RIP: 0010:msan_get_shadow_origin_ptr+0x0/0x2e0 mm/kmsan/kmsan_instr.c:324 Code: 66 2e 0f 1f 84 00 00 00 00 00 eb fe 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 e5 31 d2 e8 05 00 00 00 5d c3 0f 1f 00 <55> 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 28 48 c7 c0 00 e0 RSP: 0018:ffff8801d3fee8a8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffffffff81535185 RBX: 0000000000000003 RCX: ffff8801d3cc8000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8801d3fee938 RBP: ffff8801d3fee8b0 R08: 0000000000000000 R09: 0000000000000002 R10: 0000000000000000 R11: ffffffff81174df0 R12: ffff8801d3fee938 R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801d3cc88f8 csd_lock_wait kernel/smp.c:108 [inline] smp_call_function_single+0x373/0x4e0 kernel/smp.c:302 smp_call_function_many+0x658/0xdb0 kernel/smp.c:434 native_flush_tlb_others+0x4e8/0x500 arch/x86/mm/tlb.c:595 flush_tlb_mm_range+0x32b/0x450 arch/x86/mm/tlb.c:644 flush_tlb_page arch/x86/include/asm/tlbflush.h:526 [inline] ptep_clear_flush+0x11c/0x1f0 mm/pgtable-generic.c:87 page_mkclean_one+0x4b2/0x810 mm/rmap.c:915 rmap_walk_file+0x727/0xf30 mm/rmap.c:1850 rmap_walk mm/rmap.c:1868 [inline] page_mkclean+0x37f/0x510 mm/rmap.c:984 clear_page_dirty_for_io+0x403/0x1020 mm/page-writeback.c:2684 mpage_submit_page fs/ext4/inode.c:2188 [inline] mpage_process_page_bufs+0xa3a/0xea0 fs/ext4/inode.c:2318 mpage_prepare_extent_to_map+0xcf6/0x1250 fs/ext4/inode.c:2680 ext4_writepages+0x1fe7/0x67a0 fs/ext4/inode.c:2807 do_writepages+0x184/0x3c0 mm/page-writeback.c:2341 __writeback_single_inode+0x3da/0x1430 fs/fs-writeback.c:1323 writeback_sb_inodes+0x118b/0x2780 fs/fs-writeback.c:1587 __writeback_inodes_wb+0x1e4/0x680 fs/fs-writeback.c:1656 wb_writeback+0x944/0x12c0 fs/fs-writeback.c:1765 wb_check_old_data_flush fs/fs-writeback.c:1867 [inline] wb_do_writeback fs/fs-writeback.c:1920 [inline] wb_workfn+0x13aa/0x1f00 fs/fs-writeback.c:1949 process_one_work+0x1605/0x1f40 kernel/workqueue.c:2153 worker_thread+0x11a2/0x2590 kernel/workqueue.c:2296 kthread+0x44d/0x480 kernel/kthread.c:247 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:415 rcu_sched kthread starved for 100002 jiffies! g38886 c38885 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=1 RCU grace-period kthread stack dump: rcu_sched R running task 61928 10 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2857 [inline] __schedule+0x667/0x770 kernel/sched/core.c:3507 schedule+0x1bc/0x2d0 kernel/sched/core.c:3551 schedule_timeout+0x3f0/0x580 kernel/time/timer.c:1801 rcu_gp_kthread+0x1da1/0x3850 kernel/rcu/tree.c:2179 kthread+0x44d/0x480 kernel/kthread.c:247 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:415