====================================================== WARNING: possible circular locking dependency detected 6.13.0-rc7-syzkaller-g1950a0af2d55 #0 Not tainted ------------------------------------------------------ syz-executor423/6420 is trying to acquire lock: ffff80008fa1fc10 (cpu_hotplug_lock){++++}-{0:0}, at: acomp_ctx_get_cpu mm/zswap.c:886 [inline] ffff80008fa1fc10 (cpu_hotplug_lock){++++}-{0:0}, at: zswap_compress mm/zswap.c:908 [inline] ffff80008fa1fc10 (cpu_hotplug_lock){++++}-{0:0}, at: zswap_store_page mm/zswap.c:1439 [inline] ffff80008fa1fc10 (cpu_hotplug_lock){++++}-{0:0}, at: zswap_store+0x834/0x185c mm/zswap.c:1546 but task is already holding lock: ffff80008fc71b00 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:3926 [inline] ffff80008fc71b00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim+0xd4/0x330 mm/page_alloc.c:3951 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (fs_reclaim){+.+.}-{0:0}: __fs_reclaim_acquire mm/page_alloc.c:3853 [inline] fs_reclaim_acquire+0x84/0x120 mm/page_alloc.c:3867 might_alloc include/linux/sched/mm.h:318 [inline] slab_pre_alloc_hook mm/slub.c:4070 [inline] slab_alloc_node mm/slub.c:4148 [inline] __kmalloc_cache_node_noprof+0x5c/0x434 mm/slub.c:4337 kmalloc_node_noprof include/linux/slab.h:924 [inline] alloc_worker kernel/workqueue.c:2645 [inline] create_worker+0x110/0x644 kernel/workqueue.c:2788 workqueue_prepare_cpu+0xf0/0x180 kernel/workqueue.c:6635 cpuhp_invoke_callback+0x404/0x704 kernel/cpu.c:194 __cpuhp_invoke_callback_range kernel/cpu.c:965 [inline] cpuhp_invoke_callback_range kernel/cpu.c:989 [inline] cpuhp_up_callbacks kernel/cpu.c:1020 [inline] _cpu_up+0x3c8/0x70c kernel/cpu.c:1690 cpu_up+0x150/0x1d8 kernel/cpu.c:1722 cpuhp_bringup_mask+0xb8/0x220 kernel/cpu.c:1788 bringup_nonboot_cpus+0x48/0x4c kernel/cpu.c:1896 smp_init+0x3c/0x12c kernel/smp.c:1009 kernel_init_freeable+0x30c/0x478 init/main.c:1569 kernel_init+0x24/0x2a0 init/main.c:1466 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 -> #0 (cpu_hotplug_lock){++++}-{0:0}: check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain kernel/locking/lockdep.c:3904 [inline] __lock_acquire+0x34f0/0x7904 kernel/locking/lockdep.c:5226 lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5849 percpu_down_read include/linux/percpu-rwsem.h:51 [inline] cpus_read_lock+0x58/0x2a4 kernel/cpu.c:490 acomp_ctx_get_cpu mm/zswap.c:886 [inline] zswap_compress mm/zswap.c:908 [inline] zswap_store_page mm/zswap.c:1439 [inline] zswap_store+0x834/0x185c mm/zswap.c:1546 swap_writepage+0x958/0xf80 mm/page_io.c:279 shmem_writepage+0x1064/0x1374 mm/shmem.c:1579 pageout mm/vmscan.c:696 [inline] shrink_folio_list+0x29a4/0x498c mm/vmscan.c:1374 shrink_inactive_list mm/vmscan.c:1967 [inline] shrink_list mm/vmscan.c:2205 [inline] shrink_lruvec+0x11dc/0x2758 mm/vmscan.c:5734 shrink_node_memcgs mm/vmscan.c:5936 [inline] shrink_node+0xf64/0x2668 mm/vmscan.c:5977 shrink_zones mm/vmscan.c:6222 [inline] do_try_to_free_pages+0x5a8/0x1618 mm/vmscan.c:6284 try_to_free_pages+0x8d8/0x1160 mm/vmscan.c:6534 __perform_reclaim mm/page_alloc.c:3929 [inline] __alloc_pages_direct_reclaim+0x144/0x330 mm/page_alloc.c:3951 __alloc_pages_slowpath+0x664/0xd64 mm/page_alloc.c:4382 __alloc_pages_noprof+0x3d4/0x6a8 mm/page_alloc.c:4766 alloc_pages_mpol_noprof+0x33c/0x5f0 mm/mempolicy.c:2269 alloc_pages_noprof+0x168/0x200 mm/mempolicy.c:2348 alloc_largest_available drivers/dma-buf/heaps/system_heap.c:326 [inline] system_heap_allocate+0x320/0xb3c drivers/dma-buf/heaps/system_heap.c:371 dma_heap_buffer_alloc drivers/dma-buf/dma-heap.c:66 [inline] dma_heap_ioctl_allocate drivers/dma-buf/dma-heap.c:110 [inline] dma_heap_ioctl+0x590/0x6d8 drivers/dma-buf/dma-heap.c:170 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __arm64_sys_ioctl+0x14c/0x1cc fs/ioctl.c:892 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x1e0/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(fs_reclaim); lock(cpu_hotplug_lock); lock(fs_reclaim); rlock(cpu_hotplug_lock); *** DEADLOCK *** 1 lock held by syz-executor423/6420: #0: ffff80008fc71b00 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:3926 [inline] #0: ffff80008fc71b00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim+0xd4/0x330 mm/page_alloc.c:3951 stack backtrace: CPU: 0 UID: 0 PID: 6420 Comm: syz-executor423 Not tainted 6.13.0-rc7-syzkaller-g1950a0af2d55 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 print_circular_bug+0x154/0x1c0 kernel/locking/lockdep.c:2074 check_noncircular+0x310/0x404 kernel/locking/lockdep.c:2206 check_prev_add kernel/locking/lockdep.c:3161 [inline] check_prevs_add kernel/locking/lockdep.c:3280 [inline] validate_chain kernel/locking/lockdep.c:3904 [inline] __lock_acquire+0x34f0/0x7904 kernel/locking/lockdep.c:5226 lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5849 percpu_down_read include/linux/percpu-rwsem.h:51 [inline] cpus_read_lock+0x58/0x2a4 kernel/cpu.c:490 acomp_ctx_get_cpu mm/zswap.c:886 [inline] zswap_compress mm/zswap.c:908 [inline] zswap_store_page mm/zswap.c:1439 [inline] zswap_store+0x834/0x185c mm/zswap.c:1546 swap_writepage+0x958/0xf80 mm/page_io.c:279 shmem_writepage+0x1064/0x1374 mm/shmem.c:1579 pageout mm/vmscan.c:696 [inline] shrink_folio_list+0x29a4/0x498c mm/vmscan.c:1374 shrink_inactive_list mm/vmscan.c:1967 [inline] shrink_list mm/vmscan.c:2205 [inline] shrink_lruvec+0x11dc/0x2758 mm/vmscan.c:5734 shrink_node_memcgs mm/vmscan.c:5936 [inline] shrink_node+0xf64/0x2668 mm/vmscan.c:5977 shrink_zones mm/vmscan.c:6222 [inline] do_try_to_free_pages+0x5a8/0x1618 mm/vmscan.c:6284 try_to_free_pages+0x8d8/0x1160 mm/vmscan.c:6534 __perform_reclaim mm/page_alloc.c:3929 [inline] __alloc_pages_direct_reclaim+0x144/0x330 mm/page_alloc.c:3951 __alloc_pages_slowpath+0x664/0xd64 mm/page_alloc.c:4382 __alloc_pages_noprof+0x3d4/0x6a8 mm/page_alloc.c:4766 alloc_pages_mpol_noprof+0x33c/0x5f0 mm/mempolicy.c:2269 alloc_pages_noprof+0x168/0x200 mm/mempolicy.c:2348 alloc_largest_available drivers/dma-buf/heaps/system_heap.c:326 [inline] system_heap_allocate+0x320/0xb3c drivers/dma-buf/heaps/system_heap.c:371 dma_heap_buffer_alloc drivers/dma-buf/dma-heap.c:66 [inline] dma_heap_ioctl_allocate drivers/dma-buf/dma-heap.c:110 [inline] dma_heap_ioctl+0x590/0x6d8 drivers/dma-buf/dma-heap.c:170 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __arm64_sys_ioctl+0x14c/0x1cc fs/ioctl.c:892 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x1e0/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 syz-executor423 invoked oom-killer: gfp_mask=0x100dc2(GFP_HIGHUSER|__GFP_ZERO), order=0, oom_score_adj=1000 CPU: 0 UID: 0 PID: 6420 Comm: syz-executor423 Not tainted 6.13.0-rc7-syzkaller-g1950a0af2d55 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C) __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 dump_header+0xac/0x5f4 mm/oom_kill.c:461 oom_kill_process+0x324/0x9a4 mm/oom_kill.c:1034 out_of_memory+0xd5c/0x1014 mm/oom_kill.c:1172 __alloc_pages_may_oom+0x214/0x398 mm/page_alloc.c:3644 __alloc_pages_slowpath+0x744/0xd64 mm/page_alloc.c:4431 __alloc_pages_noprof+0x3d4/0x6a8 mm/page_alloc.c:4766 alloc_pages_mpol_noprof+0x33c/0x5f0 mm/mempolicy.c:2269 alloc_pages_noprof+0x168/0x200 mm/mempolicy.c:2348 alloc_largest_available drivers/dma-buf/heaps/system_heap.c:326 [inline] system_heap_allocate+0x320/0xb3c drivers/dma-buf/heaps/system_heap.c:371 dma_heap_buffer_alloc drivers/dma-buf/dma-heap.c:66 [inline] dma_heap_ioctl_allocate drivers/dma-buf/dma-heap.c:110 [inline] dma_heap_ioctl+0x590/0x6d8 drivers/dma-buf/dma-heap.c:170 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl fs/ioctl.c:892 [inline] __arm64_sys_ioctl+0x14c/0x1cc fs/ioctl.c:892 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x1e0/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 Mem-Info: active_anon:3 inactive_anon:4 isolated_anon:0 active_file:20 inactive_file:20 isolated_file:0 unevictable:768 dirty:0 writeback:0 slab_reclaimable:8605 slab_unreclaimable:66260 mapped:6 shmem:768 pagetables:246 sec_pagetables:0 bounce:0 kernel_misc_reclaimable:0 free:21957 free_pcp:88 free_cma:7362 Node 0 active_anon:0kB inactive_anon:20kB active_file:124kB inactive_file:164kB unevictable:3072kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:3072kB shmem_thp:0kB shmem_pmdmapped:0kB anon_thp:0kB writeback_tmp:0kB kernel_stack:6656kB pagetables:984kB sec_pagetables:0kB all_unreclaimable? yes Node 0 DMA free:63672kB boost:0kB min:20856kB low:26068kB high:31280kB reserved_highatomic:6144KB active_anon:0kB inactive_anon:88kB active_file:0kB inactive_file:200kB unevictable:0kB writepending:0kB present:3145728kB managed:3080192kB mlocked:0kB bounce:0kB free_pcp:240kB local_pcp:4kB free_cma:29448kB lowmem_reserve[]: 0 0 3489 0 0 Node 0 Normal free:24068kB boost:0kB min:24196kB low:30244kB high:36292kB reserved_highatomic:12288KB active_anon:0kB inactive_anon:44kB active_file:144kB inactive_file:0kB unevictable:3072kB writepending:0kB present:5242880kB managed:3577808kB mlocked:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB lowmem_reserve[]: 0 0 0 0 0 Node 0 DMA: 2*4kB (UM) 1*8kB (C) 2*16kB (UM) 2*32kB (UM) 2*64kB (UM) 1*128kB (U) 3*256kB (UMC) 2*512kB (UC) 2*1024kB (UM) 1*2048kB (M) 14*4096kB (MC) = 63600kB Node 0 Normal: 6*4kB (UME) 6*8kB (UM) 6*16kB (ME) 7*32kB (ME) 8*64kB (UME) 9*128kB (UME) 6*256kB (UM) 6*512kB (UM) 5*1024kB (UM) 4*2048kB (UM) 1*4096kB (U) = 24072kB 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=32768kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=64kB 934 total pagecache pages 21 pages in swap cache Free swap = 116804kB Total swap = 124996kB 2097152 pages RAM 0 pages HighMem/MovableOnly 432652 pages reserved 8192 pages cma reserved 0 pages hwpoisoned Unreclaimable slab info: Name Used Total pid_2 7KB 7KB bio-360 7KB 7KB bio-424 8KB 8KB bio-440 8KB 8KB bio-536 15KB 15KB z3fold_handle 110KB 110KB zswap_entry 154KB 154KB TIPC 31KB 31KB SCTPv6 30KB 30KB DCCPv6 30KB 30KB DCCP 31KB 31KB RXRPC 31KB 31KB rxrpc_call_jar 60KB 60KB fib6_node 8KB 8KB ip6_dst_cache 7KB 7KB RAWv6 63KB 63KB UDPv6 63KB 63KB TCPv6 60KB 60KB t10_alua_lu_gp_cache 3KB 3KB virtio_scsi_cmd 16KB 16KB bio-136 76KB 76KB bio-264 7KB 7KB mqueue_inode_cache 60KB 60KB f2fs_bio_post_read_ctx 23KB 23KB jfs_mp 7KB 7KB cifs_small_rq 16KB 16KB cifs_request 67KB 67KB cifs_mpx_ids 4KB 4KB cifs_io_subrequest 39KB 39KB cifs_io_request 94KB 94KB nfs_commit_data 15KB 15KB nfs_write_data 47KB 47KB jbd2_inode 7KB 7KB ext4_system_zone 3KB 3KB ext4_io_end_vec 7KB 7KB pid_namespace 3KB 3KB rpc_buffers 31KB 31KB rpc_tasks 3KB 3KB UNIX-STREAM 247KB 247KB UNIX 185KB 185KB tcp_bind2_bucket 8KB 8KB tcp_bind_bucket 8KB 8KB ip_fib_trie 8KB 8KB ip_fib_alias 7KB 7KB rtable 12KB 12KB RAW 30KB 30KB UDP 62KB 62KB request_sock_TCP 7KB 7KB TCP 31KB 31KB hugetlbfs_inode_cache 15KB 15KB netfs_subrequest 33KB 33KB netfs_request 94KB 94KB bio-256 11KB 11KB ep_head 8KB 8KB eventpoll_pwq 11KB 11KB eventpoll_epi 19KB 19KB inotify_inode_mark 7KB 7KB sgpool-128 29KB 29KB sgpool-64 31KB 31KB sgpool-32 15KB 15KB sgpool-16 7KB 7KB sgpool-8 3KB 3KB bio_crypt_ctx 7KB 7KB request_queue 158KB 158KB blkdev_ioc 3KB 3KB bio-200 90KB 90KB biovec-max 357KB 357KB biovec-64 94KB 94KB biovec-16 11KB 11KB bio_integrity_payload 3KB 3KB uid_cache 7KB 7KB dmaengine-unmap-256 30KB 30KB dmaengine-unmap-128 15KB 15KB dmaengine-unmap-16 4KB 4KB dmaengine-unmap-2 4KB 4KB QIPCRTR 31KB 31KB audit_buffer 3KB 3KB skbuff_small_head 1731KB 1811KB skbuff_fclone_cache 487KB 487KB skbuff_head_cache 2208KB 2253KB configfs_dir_cache 8KB 8KB file_lock_cache 19KB 19KB file_lock_ctx 11KB 11KB fsnotify_mark_connector 7KB 7KB proc_dir_entry 330KB 330KB pde_opener 15KB 15KB seq_file 118KB 139KB sigqueue 39KB 39KB shmem_inode_cache 4808KB 4808KB kernfs_iattrs_cache 7KB 7KB kernfs_node_cache 15829KB 15997KB mnt_cache 47KB 47KB filp 3400KB 3622KB names_cache 55624KB 55989KB net_namespace 30KB 30KB lsm_inode_cache 2996KB 2996KB lsm_file_cache 302KB 322KB key_jar 15KB 15KB uts_namespace 7KB 7KB nsproxy 7KB 7KB vma_lock 4027KB 4070KB vm_area_struct 4628KB 4673KB fs_cache 92KB 92KB files_cache 350KB 350KB signal_cache 955KB 1640KB sighand_cache 1288KB 1863KB task_struct 4106KB 4144KB cred 232KB 232KB anon_vma_chain 1970KB 2008KB anon_vma 2355KB 2378KB pid 193KB 225KB Acpi-Operand 94KB 106KB Acpi-ParseExt 11KB 11KB Acpi-Parse 19KB 19KB Acpi-State 39KB 59KB Acpi-Namespace 8KB 8KB numa_policy 3KB 3KB trace_event_file 544KB 544KB ftrace_event_field 992KB 992KB pool_workqueue 432KB 432KB maple_node 6829KB 7192KB task_group 30KB 30KB mm_struct 1082KB 1082KB vmap_area 530KB 530KB debug_objects_cache 2135KB 2135KB page->ptl 472KB 480KB kmalloc-cg-8k 320KB 320KB kmalloc-cg-4k 3568KB 3840KB kmalloc-cg-2k 1184KB 1184KB kmalloc-cg-1k 928KB 928KB kmalloc-cg-512 1969KB 2016KB kmalloc-cg-256 472KB 592KB kmalloc-cg-128 32KB 32KB kmalloc-cg-64 372KB 372KB kmalloc-cg-32 207KB 208KB kmalloc-cg-16 8KB 8KB kmalloc-cg-8 8KB 8KB kmalloc-cg-192 32KB 32KB kmalloc-cg-96 8KB 8KB kmalloc-8k 9520KB 9760KB kmalloc-4k 73096KB 73096KB kmalloc-2k 8128KB 8128KB kmalloc-1k 3670KB 3840KB kmalloc-512 4543KB 4800KB kmalloc-256 2099KB 2296KB kmalloc-128 440KB 468KB kmalloc-64 1520KB 1688KB kmalloc-32 1463KB 1556KB kmalloc-16 164KB 328KB kmalloc-8 213KB 324KB kmalloc-192 482KB 1428KB kmalloc-96 841KB 936KB kmem_cache_node 106KB 106KB kmem_cache 176KB 176KB Tasks state (memory values in pages): [ pid ] uid tgid total_vm rss rss_anon rss_file rss_shmem pgtables_bytes swapents oom_score_adj name [ 6021] 0 6021 810 82 32 50 0 45056 0 0 syslogd [ 6025] 0 6025 810 47 0 47 0 45056 32 0 klogd [ 6036] 0 6036 4057 60 60 0 0 49152 416 -1000 udevd [ 6089] 100 6089 847 76 39 37 0 45056 320 0 dhcpcd [ 6090] 0 6090 751 31 7 24 0 45056 96 0 dhcpcd [ 6091] 100 6091 577 63 39 24 0 40960 32 0 dhcpcd [ 6092] 100 6092 577 47 7 40 0 40960 32 0 dhcpcd [ 6171] 0 6171 1675 70 33 37 0 49152 96 -1000 sshd [ 6175] 0 6175 810 66 32 34 0 40960 0 0 getty [ 6198] 100 6198 751 28 5 23 0 45056 96 0 dhcpcd [ 6206] 100 6206 751 60 37 23 0 45056 64 0 dhcpcd [ 6235] 100 6235 751 75 38 37 0 45056 64 0 dhcpcd [ 6236] 100 6236 751 61 38 23 0 45056 64 0 dhcpcd [ 6242] 100 6242 751 75 38 37 0 45056 64 0 dhcpcd [ 6243] 100 6243 751 43 6 37 0 45056 96 0 dhcpcd [ 6246] 100 6246 751 43 6 37 0 45056 96 0 dhcpcd [ 6413] 0 6413 1773 51 32 19 0 53248 192 0 sshd [ 6415] 0 6415 4322 32 0 32 0 32768 0 0 syz-executor423 [ 6417] 0 6417 4322 4 0 4 0 32768 0 0 syz-executor423 [ 6418] 0 6418 4057 48 6 42 0 49152 448 0 udevd [ 6420] 0 6420 4322 32 0 32 0 45056 0 1000 syz-executor423 oom-kill:constraint=CONSTRAINT_NONE,nodemask=(null),cpuset=/,mems_allowed=0,global_oom,task_memcg=/,task=syz-executor423,pid=6420,uid=0 Out of memory: Killed process 6420 (syz-executor423) total-vm:17288kB, anon-rss:0kB, file-rss:128kB, shmem-rss:0kB, UID:0 pgtables:44kB oom_score_adj:1000