RAX: ffffffffffffffda RBX: 00007f9e08ca16d4 RCX: 0000000000457089 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000020400 RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 00000000004d6d80 R14: 00000000004ca16f R15: 0000000000000002 rcu: INFO: rcu_sched detected stalls on CPUs/tasks: rcu: (detected by 0, t=100002 jiffies, g=103349, q=421) rcu: All QSes seen, last rcu_sched kthread activity 100002 (4295004931-4294904929), jiffies_till_next_fqs=3, root ->qsmask 0x0 kworker/u4:1 R running task 55960 22 2 0x80000008 Workqueue: writeback wb_workfn (flush-8:0) Call Trace: sched_show_task+0x5e7/0x730 kernel/sched/core.c:5304 print_other_cpu_stall kernel/rcu/tree.c:1430 [inline] check_cpu_stall kernel/rcu/tree.c:1557 [inline] __rcu_pending kernel/rcu/tree.c:3276 [inline] rcu_pending kernel/rcu/tree.c:3319 [inline] rcu_check_callbacks+0x2278/0x2760 kernel/rcu/tree.c:2665 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:1029 smp_apic_timer_interrupt+0x5a/0x90 arch/x86/kernel/apic/apic.c:1057 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:869 RIP: 0010:lowmem_page_address include/linux/mm.h:1158 [inline] RIP: 0010:msan_get_shadow_origin_ptr+0x1e1/0x2e0 mm/kmsan/kmsan_instr.c:301 Code: 00 00 00 00 00 88 ff ff 48 b9 00 00 00 00 00 16 00 00 48 01 c8 48 c1 e8 05 48 be 00 b0 aa aa aa aa aa aa 48 0f af c6 4c 09 e8 <48> 01 d0 74 6d 41 81 e7 fc 0f 00 00 48 03 4f 48 48 c1 e9 05 48 0f RSP: 0018:ffff8801d5a2e850 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: 00000001d5a3e938 RBX: ffffffff8a11e000 RCX: 0000160000000000 RDX: ffff880000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea000b01d140 RBP: ffff8801d5a2e8a0 R08: 0000000000000000 R09: 0000000000000002 R10: 0000000000000000 R11: ffffffff81179a80 R12: 0000000000000004 R13: 0000000000000938 R14: ffffffff8a11d000 R15: ffff8801d5a2e938 __msan_metadata_ptr_for_load_4+0x10/0x20 mm/kmsan/kmsan_instr.c:349 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:602 flush_tlb_mm_range+0x32b/0x450 arch/x86/mm/tlb.c:651 flush_tlb_page arch/x86/include/asm/tlbflush.h:526 [inline] ptep_clear_flush+0x11c/0x1f0 mm/pgtable-generic.c:87 page_mkclean_one+0x4d2/0x830 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+0xcf3/0x1250 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+0x117e/0x26f0 fs/fs-writeback.c:1587 __writeback_inodes_wb+0x1e6/0x690 fs/fs-writeback.c:1656 wb_writeback+0xe84/0x12e0 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+0x465/0x4a0 kernel/kthread.c:247 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:416 rcu: rcu_sched kthread starved for 100002 jiffies! g103349 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 rcu: RCU grace-period kthread stack dump: rcu_sched R running task 61864 10 2 0x80000000 Call Trace: context_switch kernel/sched/core.c:2829 [inline] __schedule+0x657/0x760 kernel/sched/core.c:3479 schedule+0x1bc/0x2d0 kernel/sched/core.c:3523 schedule_timeout+0x3f0/0x580 kernel/time/timer.c:1804 rcu_gp_kthread+0x2281/0x3990 kernel/rcu/tree.c:2194 kthread+0x465/0x4a0 kernel/kthread.c:247 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:416