[14951] 0 14951 18147 8711 25 3 0 1000 syz-executor.5 [14991] 0 14991 18180 8747 26 4 0 0 syz-executor.0 [15205] 0 15205 18147 8746 26 4 0 0 syz-executor.0 [15281] 0 15281 18147 8713 25 3 0 0 syz-executor.4 INFO: rcu_preempt detected stalls on CPUs/tasks: Tasks blocked on level-0 rcu_node (CPUs 0-1): P1 (detected by 0, t=10502 jiffies, g=134903, c=134902, q=7) init R running task 24848 1 0 0x00000000 Call Trace: preempt_schedule_common+0x4f/0xd0 kernel/sched/core.c:3579 ___preempt_schedule+0x16/0x18 __raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock+0x3b/0x40 kernel/locking/spinlock.c:184 spin_unlock include/linux/spinlock.h:357 [inline] task_unlock include/linux/sched/task.h:136 [inline] dump_tasks mm/oom_kill.c:403 [inline] dump_header+0x7bb/0x848 mm/oom_kill.c:428 oom_kill_process.cold+0x10/0xde6 mm/oom_kill.c:861 out_of_memory mm/oom_kill.c:1084 [inline] out_of_memory+0x2d2/0xab0 mm/oom_kill.c:1023 __alloc_pages_may_oom mm/page_alloc.c:3415 [inline] __alloc_pages_slowpath mm/page_alloc.c:4112 [inline] __alloc_pages_nodemask+0x1988/0x2370 mm/page_alloc.c:4277 __alloc_pages include/linux/gfp.h:484 [inline] __alloc_pages_node include/linux/gfp.h:497 [inline] alloc_pages_node include/linux/gfp.h:511 [inline] __page_cache_alloc include/linux/pagemap.h:226 [inline] pagecache_get_page+0x246/0x7e0 mm/filemap.c:1517 filemap_fault+0x8da/0x18a0 mm/filemap.c:2518 ext4_filemap_fault+0x84/0xb0 fs/ext4/inode.c:6233 __do_fault+0x100/0x380 mm/memory.c:3223 do_read_fault mm/memory.c:3633 [inline] do_fault mm/memory.c:3759 [inline] handle_pte_fault mm/memory.c:3989 [inline] __handle_mm_fault+0x9bf/0x2700 mm/memory.c:4113 handle_mm_fault+0x2f1/0x6da mm/memory.c:4150 __do_page_fault+0x477/0xbb0 arch/x86/mm/fault.c:1420 page_fault+0x42/0x50 arch/x86/entry/entry_64.S:1122 RIP: 50851fa7:0x1 RSP: 5084fba0:00007ffc5084fd50 EFLAGS: ffffffff init R running task 24848 1 0 0x00000000 Call Trace: preempt_schedule_common+0x4f/0xd0 kernel/sched/core.c:3579 ___preempt_schedule+0x16/0x18 __raw_spin_unlock include/linux/spinlock_api_smp.h:152 [inline] _raw_spin_unlock+0x3b/0x40 kernel/locking/spinlock.c:184 spin_unlock include/linux/spinlock.h:357 [inline] task_unlock include/linux/sched/task.h:136 [inline] dump_tasks mm/oom_kill.c:403 [inline] dump_header+0x7bb/0x848 mm/oom_kill.c:428 oom_kill_process.cold+0x10/0xde6 mm/oom_kill.c:861 out_of_memory mm/oom_kill.c:1084 [inline] out_of_memory+0x2d2/0xab0 mm/oom_kill.c:1023 __alloc_pages_may_oom mm/page_alloc.c:3415 [inline] __alloc_pages_slowpath mm/page_alloc.c:4112 [inline] __alloc_pages_nodemask+0x1988/0x2370 mm/page_alloc.c:4277 __alloc_pages include/linux/gfp.h:484 [inline] __alloc_pages_node include/linux/gfp.h:497 [inline] alloc_pages_node include/linux/gfp.h:511 [inline] __page_cache_alloc include/linux/pagemap.h:226 [inline] pagecache_get_page+0x246/0x7e0 mm/filemap.c:1517 filemap_fault+0x8da/0x18a0 mm/filemap.c:2518 ext4_filemap_fault+0x84/0xb0 fs/ext4/inode.c:6233 __do_fault+0x100/0x380 mm/memory.c:3223 do_read_fault mm/memory.c:3633 [inline] do_fault mm/memory.c:3759 [inline] handle_pte_fault mm/memory.c:3989 [inline] __handle_mm_fault+0x9bf/0x2700 mm/memory.c:4113 handle_mm_fault+0x2f1/0x6da mm/memory.c:4150 __do_page_fault+0x477/0xbb0 arch/x86/mm/fault.c:1420 page_fault+0x42/0x50 arch/x86/entry/entry_64.S:1122 RIP: 50851fa7:0x1 RSP: 5084fba0:00007ffc5084fd50 EFLAGS: ffffffff [15423] 0 15423 18147 8703 25 3 0 1000 syz-executor.5 [15451] 0 15451 18180 8739 26 3 0 1000 syz-executor.5 [15536] 0 15536 18180 8717 25 3 0 0 syz-executor.0 [15545] 0 15545 18247 8723 26 3 0 0 syz-executor.0 [15581] 0 15581 18115 16 23 3 0 0 syz-executor.1 [15586] 0 15586 18114 8731 24 4 0 0 syz-executor.1 [16334] 0 16334 18147 8745 26 4 0 0 syz-executor.0 [16344] 0 16344 18213 8748 26 4 0 0 syz-executor.5 [16488] 0 16488 18180 8747 27 4 0 1000 syz-executor.1 [16550] 0 16550 18180 8750 28 4 0 0 syz-executor.4 [16553] 0 16553 18180 8750 28 4 0 0 syz-executor.4 [16566] 0 16566 18180 8717 26 3 0 0 syz-executor.0 [16571] 0 16571 18180 8750 28 4 0 0 syz-executor.4 [16587] 0 16587 18180 8750 28 4 0 0 syz-executor.4 [16820] 0 16820 18213 8750 26 4 0 0 syz-executor.4 [17084] 0 17084 18213 8750 26 4 0 0 syz-executor.0 [17085] 0 17085 18213 8750 26 4 0 0 syz-executor.0 [17113] 0 17113 18180 8749 26 4 0 0 syz-executor.5 [17136] 0 17136 18180 8748 26 4 0 0 syz-executor.4 [17170] 0 17170 18147 8705 25 3 0 0 syz-executor.0 [17179] 0 17179 18147 8737 25 3 0 0 syz-executor.0 [17248] 0 17248 18279 8754 26 4 0 0 syz-executor.0 [17367] 0 17367 18180 8745 27 4 0 1000 syz-executor.1 [17605] 0 17605 18147 8713 25 3 0 0 syz-executor.0 [17650] 0 17650 18180 8750 26 4 0 0 syz-executor.4 [17671] 0 17671 18147 8747 26 4 0 0 syz-executor.4 [17715] 0 17715 18180 8745 27 4 0 1000 syz-executor.1 [17789] 0 17789 18147 8743 26 4 0 1000 syz-executor.1 [17804] 0 17804 18180 8745 27 4 0 1000 syz-executor.1 [17815] 0 17815 18147 8743 26 4 0 1000 syz-executor.1 [17881] 0 17881 18180 8745 27 4 0 1000 syz-executor.1 [17895] 0 17895 18180 8745 27 4 0 1000 syz-executor.1 [17967] 0 17967 18246 10976 31 4 0 0 syz-executor.4 [17986] 0 17986 18246 9623 29 4 0 0 syz-executor.0 [17993] 0 17993 18246 9992 30 4 0 0 syz-executor.0 [18550] 0 18550 18147 8743 26 4 0 1000 syz-executor.1 [18555] 0 18555 18147 8743 26 4 0 1000 syz-executor.1 [18559] 0 18559 18147 8743 26 4 0 1000 syz-executor.1 [18563] 0 18563 18147 8743 26 4 0 1000 syz-executor.1 [18567] 0 18567 18147 8743 26 4 0 1000 syz-executor.1 [18571] 0 18571 18180 8745 27 4 0 1000 syz-executor.1 [18622] 0 18622 18147 8702 24 3 0 1000 syz-executor.1 [18628] 0 18628 18147 8702 24 3 0 1000 syz-executor.1 [18637] 0 18637 18147 8702 24 3 0 1000 syz-executor.1 [18681] 0 18681 18147 8743 26 4 0 1000 syz-executor.1 [18686] 0 18686 18180 8745 27 4 0 1000 syz-executor.1 [18693] 0 18693 18180 8745 27 4 0 1000 syz-executor.1 [18703] 0 18703 18180 8745 27 4 0 1000 syz-executor.1 [19679] 0 19679 18180 8745 27 4 0 1000 syz-executor.1 [19685] 0 19685 18180 8745 27 4 0 1000 syz-executor.1 [20685] 0 20685 18180 8745 27 4 0 1000 syz-executor.1 [20807] 0 20807 18147 8743 26 4 0 1000 syz-executor.1 [20811] 0 20811 18147 8743 26 4 0 1000 syz-executor.1 [20818] 0 20818 18147 8743 26 4 0 1000 syz-executor.1 [20822] 0 20822 18147 8743 26 4 0 1000 syz-executor.1 [20830] 0 20830 18147 8743 26 4 0 1000 syz-executor.1 [20835] 0 20835 18147 8743 26 4 0 1000 syz-executor.1 [21549] 0 21549 18180 8745 27 4 0 1000 syz-executor.1 [22976] 0 22976 18180 8745 27 4 0 1000 syz-executor.1 [23261] 0 23261 18180 8745 27 4 0 1000 syz-executor.1 [23418] 0 23418 18180 8745 27 4 0 1000 syz-executor.1 [23424] 0 23424 18180 8745 27 4 0 1000 syz-executor.1 [23585] 0 23585 18180 8744 26 4 0 1000 syz-executor.2 [23862] 0 23862 18246 8748 27 4 0 1000 syz-executor.1 [23882] 0 23882 18180 8745 27 4 0 1000 syz-executor.1 [23905] 0 23905 18279 8751 26 4 0 1000 syz-executor.2 [24099] 0 24099 18246 8748 27 4 0 1000 syz-executor.1 [24366] 0 24366 18213 8703 27 4 0 1000 syz-executor.1 [24683] 0 24683 18180 8745 27 4 0 1000 syz-executor.1 [24689] 0 24689 18180 8745 27 4 0 1000 syz-executor.1 [24704] 0 24704 18213 8748 28 4 0 1000 syz-executor.1 [24724] 0 24724 18213 8749 27 4 0 1000 syz-executor.1 [24750] 0 24750 18213 8747 27 4 0 1000 syz-executor.1 [24799] 0 24799 18180 8744 27 4 0 1000 syz-executor.1 [24808] 0 24808 18180 8746 27 4 0 1000 syz-executor.1 [24836] 0 24836 18213 8748 27 4 0 1000 syz-executor.1 [24879] 0 24879 18180 8745 27 4 0 1000 syz-executor.1 [24900] 0 24900 18147 8743 26 4 0 1000 syz-executor.1 [25059] 0 25059 18180 8745 27 4 0 1000 syz-executor.1 [25068] 0 25068 18180 8745 27 4 0 1000 syz-executor.1 [25208] 0 25208 18180 8745 27 4 0 1000 syz-executor.1 [25499] 0 25499 18147 8743 26 4 0 1000 syz-executor.1 [25758] 0 25758 18213 8747 27 4 0 1000 syz-executor.1 [25898] 0 25898 18213 8747 27 4 0 1000 syz-executor.1 [25974] 0 25974 18180 8744 27 4 0 1000 syz-executor.1 [26059] 0 26059 18147 8743 26 4 0 1000 syz-executor.1 [26398] 0 26398 18180 8745 27 4 0 1000 syz-executor.1 [26421] 0 26421 18147 8702 24 3 0 1000 syz-executor.1 [26575] 0 26575 18214 8746 27 4 0 1000 syz-executor.1 [26592] 0 26592 18180 8745 27 4 0 1000 syz-executor.1 [26807] 0 26807 18180 8745 27 4 0 1000 syz-executor.1 [26957] 0 26957 18180 8745 27 4 0 1000 syz-executor.1 [26963] 0 26963 18147 8743 26 4 0 1000 syz-executor.1 [27132] 0 27132 18213 8749 27 4 0 1000 syz-executor.1 [27196] 0 27195 18213 8747 27 4 0 1000 syz-executor.1 [27197] 0 27197 18213 8747 27 4 0 1000 syz-executor.1 [27265] 0 27264 18180 11352 31 4 0 0 syz-executor.4 [27284] 0 27284 18180 9415 27 4 0 0 syz-executor.3 Out of memory: Kill process 17057 (syz-executor.0) score 1006 or sacrifice child Killed process 17057 (syz-executor.0) total-vm:72720kB, anon-rss:156kB, file-rss:34816kB, shmem-rss:11480kB oom_reaper: reaped process 17057 (syz-executor.0), now anon-rss:0kB, file-rss:0kB, shmem-rss:11480kB cron invoked oom-killer: gfp_mask=0x14200ca(GFP_HIGHUSER_MOVABLE), nodemask=(null), order=0, oom_score_adj=0 CPU: 0 PID: 1683 Comm: cron Not tainted 4.14.154+ #0 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xe5/0x154 lib/dump_stack.c:58 dump_header+0x16f/0x848 mm/oom_kill.c:422 oom_kill_process.cold+0x10/0xde6 mm/oom_kill.c:861 out_of_memory mm/oom_kill.c:1084 [inline] out_of_memory+0x2d2/0xab0 mm/oom_kill.c:1023 __alloc_pages_may_oom mm/page_alloc.c:3415 [inline] __alloc_pages_slowpath mm/page_alloc.c:4112 [inline] __alloc_pages_nodemask+0x1988/0x2370 mm/page_alloc.c:4277 __alloc_pages include/linux/gfp.h:484 [inline] __alloc_pages_node include/linux/gfp.h:497 [inline] alloc_pages_node include/linux/gfp.h:511 [inline] __page_cache_alloc include/linux/pagemap.h:226 [inline] pagecache_get_page+0x246/0x7e0 mm/filemap.c:1517 filemap_fault+0x8da/0x18a0 mm/filemap.c:2518 ext4_filemap_fault+0x84/0xb0 fs/ext4/inode.c:6233 __do_fault+0x100/0x380 mm/memory.c:3223 do_read_fault mm/memory.c:3633 [inline] do_fault mm/memory.c:3759 [inline] handle_pte_fault mm/memory.c:3989 [inline] __handle_mm_fault+0x9bf/0x2700 mm/memory.c:4113 handle_mm_fault+0x2f1/0x6da mm/memory.c:4150 __do_page_fault+0x477/0xbb0 arch/x86/mm/fault.c:1420 page_fault+0x42/0x50 arch/x86/entry/entry_64.S:1122 RIP: f7b08160: (null) RSP: f7b07f80:00007ffff7b07f00 EFLAGS: ffffffff Mem-Info: active_anon:169744 inactive_anon:6629 isolated_anon:0 active_file:12 inactive_file:27 isolated_file:0 unevictable:0 dirty:1 writeback:0 unstable:0 slab_reclaimable:13221 slab_unreclaimable:83743 mapped:58698 shmem:9653 pagetables:46997 bounce:0 free:5862 free_pcp:0 free_cma:0 Node 0 active_anon:678976kB inactive_anon:26516kB active_file:48kB inactive_file:92kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:234792kB dirty:4kB writeback:0kB shmem:38612kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no DMA32 free:18276kB min:4792kB low:7868kB high:10944kB active_anon:5532kB inactive_anon:12460kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3145324kB managed:3079672kB mlocked:0kB kernel_stack:160kB pagetables:228kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 3437 3437 Normal free:5296kB min:5480kB low:9000kB high:12520kB active_anon:673444kB inactive_anon:13956kB active_file:44kB inactive_file:128kB unevictable:0kB writepending:4kB present:4718592kB managed:3521548kB mlocked:0kB kernel_stack:65408kB pagetables:187760kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 DMA32: 381*4kB (UM) 450*8kB (UM) 276*16kB (UM) 179*32kB (UM) 47*64kB (UM) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 18276kB Normal: 2455*4kB (UM) 81*8kB (M) 0*16kB 0*32kB 1*64kB (U) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 10532kB 6936 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 315674 pages reserved [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name [ 190] 0 190 5366 169 17 3 0 -1000 udevd [ 1495] 0 1495 2493 573 9 3 0 0 dhclient [ 1628] 0 1628 30649 174 24 3 0 0 rsyslogd [ 1683] 0 1683 4725 50 15 3 0 0 cron [ 1687] 0 1687 3735 44 10 3 0 0 mcstransd [ 1703] 0 1703 12927 1231 27 3 0 0 restorecond [ 1729] 0 1729 12490 153 28 4 0 -1000 sshd [ 1759] 0 1759 3649 39 13 3 0 0 getty [ 1770] 0 1770 17856 215 38 3 0 0 sshd [ 1772] 0 1772 123572 76221 204 5 0 0 syz-fuzzer [ 1834] 0 1834 18115 16 23 3 0 0 syz-executor.4 [ 1855] 0 1855 18114 8733 24 4 0 0 syz-executor.4 [ 3924] 0 3924 18180 8748 28 4 0 1000 syz-executor.4 [ 4010] 0 4010 18115 16 23 3 0 0 syz-executor.3 [ 4011] 0 4011 18114 8731 24 4 0 0 syz-executor.3 [ 4537] 0 4537 18213 8747 26 4 0 1000 syz-executor.3 [ 4569] 0 4569 18180 8745 26 4 0 1000 syz-executor.3 [ 5776] 0 5776 18213 8747 26 4 0 1000 syz-executor.3 [ 5837] 0 5837 18180 8745 26 4 0 1000 syz-executor.3 [ 6074] 0 6074 18312 8752 27 4 0 1000 syz-executor.3 [ 6130] 0 6130 18312 8752 27 4 0 1000 syz-executor.3 [ 7653] 0 7653 18180 8745 26 4 0 0 syz-executor.3 [ 7657] 0 7657 18147 8711 25 3 0 0 syz-executor.3