Node 1 Normal: 53*4kB (UM) 354*8kB (UM) 280*16kB (UM) 202*32kB (UM) 110*64kB (UMH) 108*128kB (UMH) 41*256kB (UMH) 21*512kB (UMH) 0*1024kB 0*2048kB 0*4096kB = 56100kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB INFO: task kworker/0:2:4383 blocked for more than 140 seconds. Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB Not tainted 4.19.211-syzkaller #0 40342 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 2097051 pages RAM 0 pages HighMem/MovableOnly 369649 pages reserved 0 pages cma reserved Out of memory (oom_kill_allocating_task): Kill process 18583 (syz-executor.3) score 0 or sacrifice child Killed process 18583 (syz-executor.3) total-vm:57584kB, anon-rss:25972kB, file-rss:14216kB, shmem-rss:0kB "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/0:2 D26016 4383 2 0x80000000 syz-executor.3 invoked oom-killer: gfp_mask=0x6040c0(GFP_KERNEL|__GFP_COMP), nodemask=(null), order=1, oom_score_adj=1000 oom_reaper: reaped process 18583 (syz-executor.3), now anon-rss:0kB, file-rss:14336kB, shmem-rss:0kB syz-executor.3 cpuset=/ mems_allowed=0-1 CPU: 1 PID: 18594 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 dump_header+0x15d/0xc3f mm/oom_kill.c:443 oom_kill_process.cold+0x10/0x692 mm/oom_kill.c:956 out_of_memory mm/oom_kill.c:1114 [inline] out_of_memory+0x1072/0x1390 mm/oom_kill.c:1064 __alloc_pages_may_oom mm/page_alloc.c:3553 [inline] __alloc_pages_slowpath mm/page_alloc.c:4255 [inline] __alloc_pages_nodemask+0x23a2/0x2890 mm/page_alloc.c:4419 Workqueue: events switchdev_deferred_process_work __alloc_pages include/linux/gfp.h:496 [inline] __alloc_pages_node include/linux/gfp.h:509 [inline] kmem_getpages mm/slab.c:1412 [inline] cache_grow_begin+0xa4/0x8a0 mm/slab.c:2682 fallback_alloc+0x213/0x2e0 mm/slab.c:3224 slab_alloc_node mm/slab.c:3332 [inline] kmem_cache_alloc_node+0xe3/0x3b0 mm/slab.c:3647 alloc_task_struct_node kernel/fork.c:157 [inline] dup_task_struct kernel/fork.c:807 [inline] copy_process.part.0+0x1ceb/0x8260 kernel/fork.c:1753 copy_process kernel/fork.c:1710 [inline] _do_fork+0x22f/0xf30 kernel/fork.c:2219 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f83d78e9e99 Code: Bad RIP value. RSP: 002b:00007f83d621d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000039 RAX: ffffffffffffffda RBX: 00007f83d79fd100 RCX: 00007f83d78e9e99 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f83d7943ff1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffa214965f R14: 00007f83d621d300 R15: 0000000000022000 Mem-Info: active_anon:215801 inactive_anon:1250838 isolated_anon:0 active_file:8 inactive_file:49 isolated_file:12 unevictable:1536 dirty:0 writeback:0 unstable:0 slab_reclaimable:14845 slab_unreclaimable:124270 mapped:8609 shmem:40117 pagetables:26120 bounce:0 free:23668 free_pcp:363 free_cma:0 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 Node 0 active_anon:829016kB inactive_anon:1409996kB active_file:0kB inactive_file:4kB unevictable:6144kB isolated(anon):0kB isolated(file):0kB mapped:25132kB dirty:0kB writeback:0kB shmem:91012kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 583680kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150 Node 1 active_anon:34188kB inactive_anon:3593356kB active_file:368kB inactive_file:296kB unevictable:0kB isolated(anon):0kB isolated(file):128kB mapped:9768kB dirty:0kB writeback:0kB shmem:69456kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Node 0 DMA free:10984kB min:204kB low:252kB high:300kB active_anon:48kB inactive_anon:4760kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB INFO: task kworker/0:1:5604 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/0:1 D26160 5604 2 0x80000000 systemd-journald[12362]: /dev/kmsg buffer overrun, some messages lost. Workqueue: events linkwatch_event lowmem_reserve[]: 0 2693 2695 2695 2695 Node 0 DMA32 free:28588kB min:35996kB low:44992kB high:53988kB active_anon:828968kB inactive_anon:1405236kB active_file:0kB inactive_file:4kB unevictable:6144kB writepending:0kB present:3129332kB managed:2763452kB mlocked:6144kB kernel_stack:12800kB pagetables:20248kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 lowmem_reserve[]: 0 0 1 1 1 Node 0 Normal free:4kB min:24kB low:28kB high:32kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1048576kB managed:2000kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 1 Normal free:55788kB min:53876kB low:67344kB high:80812kB active_anon:34188kB inactive_anon:3593356kB active_file:8kB inactive_file:1492kB unevictable:0kB writepending:0kB present:4194304kB managed:4128248kB mlocked:0kB kernel_stack:26208kB pagetables:84636kB bounce:0kB free_pcp:580kB local_pcp:428kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 DMA: 8*4kB (UM) 7*8kB (UM) 5*16kB (M) 6*32kB (M) 2*64kB (M) 2*128kB (UM) 2*256kB (UM) 1*512kB (U) 3*1024kB (UM) 1*2048kB (U) 1*4096kB (M) = 10984kB schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3619 __mutex_lock_common kernel/locking/mutex.c:1016 [inline] __mutex_lock+0x5f0/0x1190 kernel/locking/mutex.c:1078 systemd-journald[12362]: /dev/kmsg buffer overrun, some messages lost. Node 0 DMA32: 721*4kB (ME) 274*8kB (UMEH) 617*16kB (UME) 257*32kB (UME) 51*64kB (UM) 13*128kB (M) 2*256kB (M) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 28612kB Node 0 Normal: 1*4kB (U) 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 4kB Node 1 Normal: 0*4kB 279*8kB (UM) 283*16kB (UM) 168*32kB (UM) 111*64kB (UMH) 109*128kB (UMH) 43*256kB (UMH) 21*512kB (UMH) 0*1024kB 0*2048kB 0*4096kB = 54952kB linkwatch_event+0xb/0x60 net/core/link_watch.c:236 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Showing all locks held in the system: 1 lock held by systemd/1: #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: fs_reclaim_release mm/page_alloc.c:3778 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: fs_reclaim_release mm/page_alloc.c:3774 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __perform_reclaim mm/page_alloc.c:3805 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:3821 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_slowpath mm/page_alloc.c:4211 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_nodemask+0x191e/0x2890 mm/page_alloc.c:4419 Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 3 locks held by kworker/1:0/19: #0: 0000000086af6930 ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 40319 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB #1: 00000000b0c97d50 ((addr_chk_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 Total swap = 0kB 2097051 pages RAM 0 pages HighMem/MovableOnly #2: 0000000070d97270 (rtnl_mutex){+.+.}, at: addrconf_verify_work+0xa/0x20 net/ipv6/addrconf.c:4476 369649 pages reserved 0 pages cma reserved Out of memory (oom_kill_allocating_task): Kill process 18594 (syz-executor.3) score 0 or sacrifice child 1 lock held by khungtaskd/1571: #0: 00000000f6bb9849 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 Killed process 18594 (syz-executor.3) total-vm:57584kB, anon-rss:25972kB, file-rss:14040kB, shmem-rss:0kB 2 locks held by kswapd1/1970: #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __fs_reclaim_acquire+0x0/0x30 mm/page_alloc.c:3459 oom_reaper: reaped process 18594 (syz-executor.3), now anon-rss:0kB, file-rss:14040kB, shmem-rss:0kB #1: 000000007c0cd37b (&mapping->i_mmap_rwsem){++++}, at: i_mmap_lock_read include/linux/fs.h:501 [inline] #1: 000000007c0cd37b (&mapping->i_mmap_rwsem){++++}, at: rmap_walk_file+0x7ed/0xb10 mm/rmap.c:1886 syz-executor.3 invoked oom-killer: gfp_mask=0x7080c0(GFP_KERNEL_ACCOUNT|__GFP_ZERO), nodemask=(null), order=3, oom_score_adj=1000 3 locks held by kworker/0:2/4383: #0: 00000000d97cc16c ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 0000000060654fea (deferred_process_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 syz-executor.3 cpuset=/ mems_allowed=0-1 #2: 0000000070d97270 (rtnl_mutex){+.+.}, at: switchdev_deferred_process_work+0xa/0x20 net/switchdev/switchdev.c:150 CPU: 0 PID: 18217 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 dump_header+0x15d/0xc3f mm/oom_kill.c:443 oom_kill_process.cold+0x10/0x692 mm/oom_kill.c:956 out_of_memory mm/oom_kill.c:1114 [inline] out_of_memory+0x1072/0x1390 mm/oom_kill.c:1064 __alloc_pages_may_oom mm/page_alloc.c:3553 [inline] __alloc_pages_slowpath mm/page_alloc.c:4255 [inline] __alloc_pages_nodemask+0x23a2/0x2890 mm/page_alloc.c:4419 1 lock held by systemd-udevd/4698: #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: fs_reclaim_release mm/page_alloc.c:3778 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: fs_reclaim_release mm/page_alloc.c:3774 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __perform_reclaim mm/page_alloc.c:3805 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:3821 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_slowpath mm/page_alloc.c:4211 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_nodemask+0x191e/0x2890 mm/page_alloc.c:4419 1 lock held by cron/7800: #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: fs_reclaim_release mm/page_alloc.c:3778 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: fs_reclaim_release mm/page_alloc.c:3774 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __perform_reclaim mm/page_alloc.c:3805 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:3821 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_slowpath mm/page_alloc.c:4211 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_nodemask+0x191e/0x2890 mm/page_alloc.c:4419 3 locks held by syz-fuzzer/8099: #0: 00000000cf6a8243 (&mm->mmap_sem){++++}, at: __do_page_fault+0x398/0xd60 arch/x86/mm/fault.c:1341 #1: 00000000e4c841ef (&ei->i_mmap_sem){++++}, at: ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6378 __alloc_pages include/linux/gfp.h:496 [inline] __alloc_pages_node include/linux/gfp.h:509 [inline] alloc_pages_node include/linux/gfp.h:523 [inline] alloc_thread_stack_node kernel/fork.c:240 [inline] dup_task_struct kernel/fork.c:811 [inline] copy_process.part.0+0x3cf/0x8260 kernel/fork.c:1753 #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: fs_reclaim_release mm/page_alloc.c:3778 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: fs_reclaim_release mm/page_alloc.c:3774 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __perform_reclaim mm/page_alloc.c:3805 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:3821 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_slowpath mm/page_alloc.c:4211 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_nodemask+0x191e/0x2890 mm/page_alloc.c:4419 3 locks held by syz-fuzzer/15184: #0: 00000000cf6a8243 (&mm->mmap_sem){++++}, at: __do_page_fault+0x398/0xd60 arch/x86/mm/fault.c:1341 #1: 00000000e4c841ef (&ei->i_mmap_sem){++++}, at: ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6378 #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: fs_reclaim_release mm/page_alloc.c:3778 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: fs_reclaim_release mm/page_alloc.c:3774 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __perform_reclaim mm/page_alloc.c:3805 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:3821 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_slowpath mm/page_alloc.c:4211 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_nodemask+0x191e/0x2890 mm/page_alloc.c:4419 copy_process kernel/fork.c:1710 [inline] _do_fork+0x22f/0xf30 kernel/fork.c:2219 3 locks held by kworker/u4:7/9433: #0: 000000006d7d8b99 ((wq_completion)"events_unbound"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000006eca0d07 ((work_completion)(&sub_info->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: fs_reclaim_release mm/page_alloc.c:3778 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: fs_reclaim_release mm/page_alloc.c:3774 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __perform_reclaim mm/page_alloc.c:3805 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:3821 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_slowpath mm/page_alloc.c:4211 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_nodemask+0x191e/0x2890 mm/page_alloc.c:4419 RIP: 0033:0x7f83d78e9e99 Code: Bad RIP value. 3 locks held by kworker/u4:12/11179: RSP: 002b:00007f83d621d168 EFLAGS: 00000246 ORIG_RAX: 0000000000000039 RAX: ffffffffffffffda RBX: 00007f83d79fd100 RCX: 00007f83d78e9e99 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f83d7943ff1 R08: 0000000000000000 R09: 0000000000000000 #0: 000000006d7d8b99 ((wq_completion)"events_unbound"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffa214965f R14: 00007f83d621d300 R15: 0000000000022000 Mem-Info: active_anon:215804 inactive_anon:1250838 isolated_anon:0 active_file:76 inactive_file:107 isolated_file:31 unevictable:1536 dirty:0 writeback:0 unstable:0 slab_reclaimable:14816 slab_unreclaimable:124264 mapped:8734 shmem:40117 pagetables:26303 bounce:0 free:23462 free_pcp:166 free_cma:0 Node 0 active_anon:829016kB inactive_anon:1409996kB active_file:0kB inactive_file:4kB unevictable:6144kB isolated(anon):0kB isolated(file):0kB mapped:25132kB dirty:0kB writeback:0kB shmem:91012kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 583680kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes Node 1 active_anon:34200kB inactive_anon:3593356kB active_file:340kB inactive_file:344kB unevictable:0kB isolated(anon):0kB isolated(file):208kB mapped:9612kB dirty:0kB writeback:0kB shmem:69456kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no #1: 00000000c4c3f35f ((work_completion)(&sub_info->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 Node 0 DMA free:10984kB min:204kB low:252kB high:300kB active_anon:48kB inactive_anon:4760kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 2693 2695 2695 2695 Node 0 DMA32 free:28800kB min:35996kB low:44992kB high:53988kB active_anon:828968kB inactive_anon:1405236kB active_file:0kB inactive_file:4kB unevictable:6144kB writepending:0kB present:3129332kB managed:2763452kB mlocked:6144kB kernel_stack:12800kB pagetables:20248kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 1 1 1 #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: fs_reclaim_release mm/page_alloc.c:3778 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: fs_reclaim_release mm/page_alloc.c:3774 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __perform_reclaim mm/page_alloc.c:3805 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:3821 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_slowpath mm/page_alloc.c:4211 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_nodemask+0x191e/0x2890 mm/page_alloc.c:4419 Node 0 Normal free:4kB min:24kB low:28kB high:32kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1048576kB managed:2000kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB 2 locks held by agetty/14593: #0: 000000006b3f4983 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 000000008be171a2 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154 3 locks held by kworker/u4:4/31027: #0: 000000006d7d8b99 ((wq_completion)"events_unbound"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 00000000cdeea678 ((work_completion)(&sub_info->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 lowmem_reserve[]: 0 0 0 0 0 Node 1 Normal free:53712kB min:53876kB low:67344kB high:80812kB active_anon:34200kB inactive_anon:3593356kB active_file:0kB inactive_file:656kB unevictable:0kB writepending:0kB present:4194304kB managed:4128248kB mlocked:0kB kernel_stack:26688kB pagetables:85572kB bounce:0kB free_pcp:568kB local_pcp:0kB free_cma:0kB #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: fs_reclaim_release mm/page_alloc.c:3778 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: fs_reclaim_release mm/page_alloc.c:3774 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __perform_reclaim mm/page_alloc.c:3805 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:3821 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_slowpath mm/page_alloc.c:4211 [inline] #2: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_nodemask+0x191e/0x2890 mm/page_alloc.c:4419 3 locks held by kworker/u4:5/32115: 3 locks held by kworker/0:1/5604: #0: 00000000d97cc16c ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 lowmem_reserve[]: 0 0 0 0 0 #1: 000000005d8a7d9e ((linkwatch_work).work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 Node 0 DMA: 8*4kB (UM) 7*8kB (UM) 5*16kB (M) 6*32kB (M) 2*64kB (M) 2*128kB (UM) 2*256kB (UM) 1*512kB (U) 3*1024kB (UM) 1*2048kB (U) 1*4096kB (M) = 10984kB Node 0 DMA32: 747*4kB (UME) 303*8kB (UMEH) 614*16kB (UME) 257*32kB (UME) 51*64kB (UM) 13*128kB (M) 2*256kB (M) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 28900kB Node 0 Normal: 1*4kB (U) 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 4kB Node 1 Normal: 208*4kB (UM) 451*8kB (UM) 261*16kB (UM) 92*32kB (UM) 111*64kB (UMH) 109*128kB (UMH) 43*256kB (UMH) 21*512kB (UMH) 0*1024kB 0*2048kB 0*4096kB = 54376kB #2: 0000000070d97270 (rtnl_mutex){+.+.}, at: linkwatch_event+0xb/0x60 net/core/link_watch.c:236 Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB 1 lock held by systemd-journal/12362: Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: fs_reclaim_release mm/page_alloc.c:3778 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: fs_reclaim_release mm/page_alloc.c:3774 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __perform_reclaim mm/page_alloc.c:3805 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:3821 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_slowpath mm/page_alloc.c:4211 [inline] #0: 00000000c192e9a9 (fs_reclaim){+.+.}, at: __alloc_pages_nodemask+0x191e/0x2890 mm/page_alloc.c:4419 40334 total pagecache pages 0 pages in swap cache 1 lock held by syz-executor.0/14416: #0: 0000000070d97270 (rtnl_mutex){+.+.}, at: tun_detach drivers/net/tun.c:759 [inline] #0: 0000000070d97270 (rtnl_mutex){+.+.}, at: tun_chr_close+0x3a/0x180 drivers/net/tun.c:3323 Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 2097051 pages RAM 5 locks held by kworker/u4:8/14790: #0: 00000000928008d3 ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124