[info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[ 9.014460] rsyslogd (2860) used greatest stack depth: 14592 bytes left [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-upstream-mmots-kasan-gce-1,10.128.15.214' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 45.553170] syzkaller990514 invoked oom-killer: gfp_mask=0x14000c0(GFP_KERNEL), nodemask=(null), order=0, oom_score_adj=0 [ 45.554756] syzkaller990514 cpuset=/ mems_allowed=0 [ 45.555705] CPU: 1 PID: 2988 Comm: syzkaller990514 Not tainted 4.14.0-rc5-mm1+ #20 [ 45.556748] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.558010] Call Trace: [ 45.558395] dump_stack+0x194/0x257 [ 45.558907] ? arch_local_irq_restore+0x53/0x53 [ 45.559569] ? dump_header+0x1d9/0xe0e [ 45.560108] dump_header+0x28e/0xe0e [ 45.560642] ? pagefault_out_of_memory+0x152/0x152 [ 45.561311] ? check_noncircular+0x20/0x20 [ 45.561887] ? mark_lock+0x59f/0x13d0 [ 45.562443] ? print_irqtrace_events+0x270/0x270 [ 45.563105] ? __lock_acquire+0x6aa/0x3d50 [ 45.563686] ? find_held_lock+0x35/0x1d0 [ 45.564251] ? check_noncircular+0x20/0x20 [ 45.564832] ? task_will_free_mem+0x252/0xaa0 [ 45.565448] ? find_held_lock+0x35/0x1d0 [ 45.566000] ? ___ratelimit+0x30d/0x630 [ 45.566549] ? lock_downgrade+0x990/0x990 [ 45.567144] ? do_raw_spin_trylock+0x190/0x190 [ 45.567768] ? mark_held_locks+0xaf/0x100 [ 45.568336] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 45.569045] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 45.569719] ? trace_hardirqs_on+0xd/0x10 [ 45.570291] ? ___ratelimit+0x95/0x630 [ 45.570831] ? idr_get_free_cmn+0xfd0/0xfd0 [ 45.571447] ? check_noncircular+0x20/0x20 [ 45.572016] ? find_held_lock+0x138/0x1d0 [ 45.572600] oom_kill_process+0x86d/0x13c0 [ 45.573189] ? has_ns_capability_noaudit+0x163/0x2a0 [ 45.577608] ? lock_downgrade+0x990/0x990 [ 45.581732] ? oom_evaluate_task+0x480/0x480 [ 45.586136] ? security_capable_noaudit+0x8b/0xc0 [ 45.590958] ? has_ns_capability_noaudit+0x18c/0x2a0 [ 45.596036] ? has_capability+0x30/0x30 [ 45.599989] ? check_noncircular+0x20/0x20 [ 45.604213] ? has_capability_noaudit+0x24/0x30 [ 45.608859] ? oom_badness+0xd1/0x980 [ 45.612634] ? lock_release+0xa40/0xa40 [ 45.616600] ? find_lock_task_mm+0x460/0x460 [ 45.620999] ? find_held_lock+0x35/0x1d0 [ 45.625037] ? out_of_memory+0xaa9/0x11d0 [ 45.629153] ? lock_downgrade+0x990/0x990 [ 45.633271] ? lock_release+0xa40/0xa40 [ 45.637211] ? lock_acquire+0x1d5/0x580 [ 45.641154] ? __alloc_pages_slowpath+0x1001/0x2db0 [ 45.646158] ? oom_evaluate_task+0x284/0x480 [ 45.650557] out_of_memory+0x7dc/0x11d0 [ 45.654527] ? oom_killer_disable+0x310/0x310 [ 45.658997] ? mutex_trylock+0x23a/0x2d0 [ 45.663027] ? __lock_is_held+0xb6/0x140 [ 45.667056] ? __ww_mutex_wakeup_for_backoff+0x240/0x240 [ 45.672503] __alloc_pages_slowpath+0x1d9d/0x2db0 [ 45.677346] ? warn_alloc+0x2f0/0x2f0 [ 45.681118] ? lock_downgrade+0x990/0x990 [ 45.685235] ? load_balance+0x33b0/0x33b0 [ 45.689353] ? print_irqtrace_events+0x270/0x270 [ 45.694076] ? print_irqtrace_events+0x270/0x270 [ 45.698797] ? mark_held_locks+0xaf/0x100 [ 45.702913] ? _raw_spin_unlock_irq+0x27/0x70 [ 45.707377] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 45.712358] ? trace_hardirqs_on+0xd/0x10 [ 45.716480] ? check_noncircular+0x20/0x20 [ 45.720681] ? retint_kernel+0x10/0x10 [ 45.724535] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 45.729519] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 45.734259] ? __lock_is_held+0xb6/0x140 [ 45.738299] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 45.744159] ? __might_sleep+0x95/0x190 [ 45.748107] __alloc_pages_nodemask+0x9fb/0xd80 [ 45.752746] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 45.757728] ? mark_held_locks+0xaf/0x100 [ 45.761844] ? retint_kernel+0x10/0x10 [ 45.765697] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 45.770681] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 45.775410] ? retint_kernel+0x10/0x10 [ 45.779272] ? alloc_pages_current+0x86/0x1e0 [ 45.783739] alloc_pages_current+0xb6/0x1e0 [ 45.788035] relay_open_buf.part.10+0x22e/0x9b0 [ 45.792681] relay_open+0x57a/0xa40 [ 45.796280] ? relay_open_buf.part.10+0x9b0/0x9b0 [ 45.801090] ? __debugfs_create_file+0x2cc/0x3e0 [ 45.805816] ? debugfs_create_file+0x57/0x70 [ 45.810193] do_blk_trace_setup+0x4a4/0xcf0 [ 45.814484] ? blk_tracer_print_line+0x40/0x40 [ 45.819036] ? __might_sleep+0x95/0x190 [ 45.822983] ? kasan_check_write+0x14/0x20 [ 45.827185] ? _copy_from_user+0x99/0x110 [ 45.831301] blk_trace_setup+0xbd/0x180 [ 45.835242] ? do_blk_trace_setup+0xcf0/0xcf0 [ 45.839736] ? avc_has_extended_perms+0x6e5/0x12c0 [ 45.844638] sg_ioctl+0xc71/0x2d90 [ 45.848143] ? lock_release+0xa40/0xa40 [ 45.852082] ? __handle_mm_fault+0x587/0x39c0 [ 45.856548] ? sg_new_write.isra.20+0x830/0x830 [ 45.861847] ? is_bpf_text_address+0xa4/0x120 [ 45.866315] ? avc_has_extended_perms+0x7fa/0x12c0 [ 45.871219] ? avc_ss_reset+0x110/0x110 [ 45.875163] ? find_held_lock+0x35/0x1d0 [ 45.879199] ? __do_page_fault+0x64c/0xd60 [ 45.883403] ? lock_downgrade+0x990/0x990 [ 45.887525] ? handle_mm_fault+0x410/0x8d0 [ 45.891741] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 45.897590] ? up_read+0x1a/0x40 [ 45.900928] ? rcu_note_context_switch+0x710/0x710 [ 45.905834] ? sg_new_write.isra.20+0x830/0x830 [ 45.910470] do_vfs_ioctl+0x1b1/0x1520 [ 45.914321] ? _cond_resched+0x14/0x30 [ 45.918179] ? ioctl_preallocate+0x2b0/0x2b0 [ 45.922558] ? selinux_capable+0x40/0x40 [ 45.926587] ? putname+0xf3/0x130 [ 45.930015] ? do_sys_open+0x320/0x6d0 [ 45.933883] ? security_file_ioctl+0x89/0xb0 [ 45.938262] SyS_ioctl+0x8f/0xc0 [ 45.941598] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 45.946318] RIP: 0033:0x443ec9 [ 45.949472] RSP: 002b:00007fff4499fc78 EFLAGS: 00000206 ORIG_RAX: 0000000000000010 [ 45.957147] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443ec9 [ 45.964384] RDX: 000000002084cf90 RSI: 00000000c0481273 RDI: 0000000000000003 [ 45.971621] RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 [ 45.978856] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000401bb0 [ 45.986090] R13: 0000000000401c40 R14: 0000000000000000 R15: 0000000000000000 [ 45.993413] Mem-Info: [ 45.995886] active_anon:2217 inactive_anon:33 isolated_anon:0 [ 45.995886] active_file:15 inactive_file:15 isolated_file:0 [ 45.995886] unevictable:0 dirty:0 writeback:0 unstable:0 [ 45.995886] slab_reclaimable:5962 slab_unreclaimable:82853 [ 45.995886] mapped:2 shmem:39 pagetables:270 bounce:0 [ 45.995886] free:24126 free_pcp:196 free_cma:0 [ 46.028008] Node 0 active_anon:8868kB inactive_anon:132kB active_file:60kB inactive_file:60kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:8kB dirty:0kB writeback:0kB shmem:156kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 2048kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes [ 46.054729] Node 0 DMA free:15908kB min:160kB low:200kB high:240kB active_anon:0kB inactive_anon:0kB 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 [ 46.080835] lowmem_reserve[]: 0 2886 6400 6400 [ 46.085424] Node 0 DMA32 free:44096kB min:30408kB low:38008kB high:45608kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2958448kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB [ 46.112585] lowmem_reserve[]: 0 0 3513 3513 [ 46.116903] Node 0 Normal free:36500kB min:37008kB low:46260kB high:55512kB active_anon:8868kB inactive_anon:132kB active_file:60kB inactive_file:60kB unevictable:0kB writepending:0kB present:4718592kB managed:3597488kB mlocked:0kB kernel_stack:2624kB pagetables:1080kB bounce:0kB free_pcp:784kB local_pcp:132kB free_cma:0kB [ 46.145629] lowmem_reserve[]: 0 0 0 0 [ 46.149455] Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB [ 46.163137] Node 0 DMA32: 2*4kB (M) 1*8kB (M) 5*16kB (UM) 3*32kB (M) 4*64kB (UM) 3*128kB (UM) 3*256kB (UM) 3*512kB (UM) 2*1024kB (UM) 3*2048kB (M) 8*4096kB (M) = 44096kB [ 46.178517] Node 0 Normal: 521*4kB (UM) 372*8kB (ME) 243*16kB (UME) 149*32kB (UME) 80*64kB (M) 44*128kB (ME) 19*256kB (UM) 4*512kB (ME) 1*1024kB (U) 2*2048kB (UM) 0*4096kB = 36500kB [ 46.194872] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB [ 46.203444] 69 total pagecache pages [ 46.207164] 0 pages in swap cache [ 46.210605] Swap cache stats: add 0, delete 0, find 0/0 [ 46.215947] Free swap = 0kB [ 46.218949] Total swap = 0kB [ 46.221950] 1965979 pages RAM [ 46.225046] 0 pages HighMem/MovableOnly [ 46.229033] 323018 pages reserved [ 46.232507] Unreclaimable slab info: [ 46.236238] Name Used Total [ 46.241805] TIPC 1KB 7KB [ 46.247175] SCTPv6 2KB 4KB [ 46.252537] DCCPv6 2KB 7KB [ 46.257884] DCCP 2KB 6KB [ 46.263264] fib6_nodes 0KB 4KB [ 46.268619] ip6_dst_cache 6KB 11KB [ 46.273972] RAWv6 9KB 13KB [ 46.279336] UDPv6 12KB 14KB [ 46.284691] TCPv6 2KB 5KB [ 46.290045] sd_ext_cdb 0KB 3KB [ 46.295404] scsi_sense_cache 95KB 132KB [ 46.300757] virtio_scsi_cmd 16KB 16KB [ 46.306114] sgpool-128 8KB 8KB [ 46.311475] sgpool-64 4KB 6KB [ 46.316829] sgpool-32 47KB 47KB [ 46.322178] sgpool-16 26KB 26KB [ 46.327537] sgpool-8 211KB 221KB [ 46.332893] cfq_io_cq 15KB 23KB [ 46.338245] cfq_queue 26KB 38KB [ 46.343605] mqueue_inode_cache 1KB 7KB [ 46.349057] nfs_commit_data 3KB 7KB [ 46.354413] nfs_write_data 34KB 37KB [ 46.359776] jbd2_inode 1KB 3KB [ 46.365141] ext4_system_zone 0KB 3KB [ 46.370501] bio-1 1KB 3KB [ 46.375869] rpc_buffers 17KB 19KB [ 46.381235] rpc_tasks 2KB 3KB [ 46.386591] UNIX 433KB 435KB [ 46.391938] tcp_bind_bucket 0KB 4KB [ 46.397300] ip_fib_trie 0KB 3KB [ 46.402658] ip_fib_alias 0KB 3KB [ 46.408005] ip_dst_cache 4KB 7KB [ 46.413381] RAW 5KB 7KB [ 46.418737] UDP 30KB 32KB [ 46.424084] request_sock_TCP 0KB 3KB [ 46.429444] TCP 10KB 15KB [ 46.434799] hugetlbfs_inode_cache 1KB 7KB [ 46.440495] eventpoll_pwq 10KB 11KB [ 46.445839] eventpoll_epi 18KB 19KB [ 46.451202] inotify_inode_mark 2KB 7KB [ 46.456644] request_queue 33KB 67KB [ 46.461991] blkdev_ioc 22KB 31KB [ 46.467356] bio-0 266KB 292KB [ 46.472711] biovec-(1<<(21-12)) 404KB 404KB [ 46.478236] biovec-128 34KB 38KB [ 46.483598] biovec-64 15KB 31KB [ 46.488952] biovec-16 7KB 15KB [ 46.494299] khugepaged_mm_slot 0KB 3KB [ 46.499749] uid_cache 1KB 3KB [ 46.505118] dmaengine-unmap-2 0KB 3KB [ 46.510476] skbuff_fclone_cache 129KB 131KB [ 46.515996] skbuff_head_cache 1816KB 1818KB [ 46.521360] configfs_dir_cache 0KB 4KB [ 46.526801] file_lock_cache 147KB 150KB [ 46.532155] file_lock_ctx 1KB 3KB [ 46.537516] fsnotify_mark_connector 1KB 3KB [ 46.543404] shmem_inode_cache 781KB 781KB [ 46.548759] task_delay_info 282KB 430KB [ 46.554108] sigqueue 311KB 330KB [ 46.559472] kernfs_node_cache 1701KB 1704KB [ 46.564827] mnt_cache 14KB 20KB [ 46.570175] filp 8170KB 8186KB [ 46.575536] names_cache 111898KB 111936KB [ 46.580897] avc_node 2KB 3KB [ 46.586245] selinux_file_security 408KB 410KB [ 46.591940] selinux_inode_security 1545KB 1548KB [ 46.597737] key_jar 2KB 7KB [ 46.603107] nsproxy 0KB 3KB [ 46.608463] vm_area_struct 17328KB 17363KB [ 46.613818] mm_struct 3580KB 3657KB [ 46.619179] fs_cache 375KB 500KB [ 46.624533] files_cache 1391KB 1601KB [ 46.629878] signal_cache 2264KB 2752KB [ 46.635241] sighand_cache 185KB 284KB [ 46.640597] task_struct 9138KB 9180KB [ 46.645942] cred_jar 2144KB 2460KB [ 46.651303] anon_vma_chain 7290KB 7363KB [ 46.656657] anon_vma 168KB 277KB [ 46.662022] pid 199KB 308KB [ 46.667383] Acpi-Operand 105KB 166KB [ 46.672738] Acpi-Namespace 18KB 19KB [ 46.678085] numa_policy 0KB 3KB [ 46.683449] trace_event_file 139KB 139KB [ 46.688803] ftrace_event_field 245KB 248KB [ 46.694239] pool_workqueue 9KB 12KB [ 46.699599] page->ptl 2801KB 2885KB [ 46.704977] kmalloc-262144 1032KB 1032KB [ 46.710324] kmalloc-131072 650KB 650KB [ 46.715686] kmalloc-65536 264KB 264KB [ 46.721052] kmalloc-32768 462KB 462KB [ 46.726409] kmalloc-16384 132KB 132KB [ 46.731768] kmalloc-8192 346KB 346KB [ 46.737135] kmalloc-4096 14105KB 14144KB [ 46.742491] kmalloc-2048 2785KB 2785KB [ 46.747840] kmalloc-1024 3661KB 3661KB [ 46.753281] kmalloc-512 3350KB 3360KB [ 46.758644] kmalloc-256 1293KB 1466KB [ 46.763992] kmalloc-128 318KB 452KB [ 46.769357] kmalloc-96 346KB 388KB [ 46.774712] kmalloc-64 346KB 428KB [ 46.780058] kmalloc-32 978KB 1409KB [ 46.785483] kmalloc-192 144KB 184KB [ 46.790844] kmem_cache 90KB 93KB [ 46.796194] [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name [ 46.804807] [ 1516] 0 1516 5316 112 90112 0 -1000 udevd [ 46.812975] [ 1620] 0 1620 5315 113 86016 0 -1000 udevd [ 46.821124] [ 1621] 0 1621 5315 112 86016 0 -1000 udevd [ 46.829276] [ 2744] 0 2744 2493 574 61440 0 0 dhclient [ 46.837692] [ 2874] 0 2874 30604 92 122880 0 0 rsyslogd [ 46.846089] [ 2909] 0 2909 4725 49 86016 0 0 cron [ 46.854134] [ 2935] 0 2935 12490 153 143360 0 -1000 sshd [ 46.862177] [ 2959] 0 2959 3694 38 77824 0 0 getty [ 46.870307] [ 2960] 0 2960 3694 40 77824 0 0 getty [ 46.878437] [ 2961] 0 2961 3694 40 69632 0 0 getty [ 46.886569] [ 2962] 0 2962 3694 40 69632 0 0 getty [ 46.894703] [ 2963] 0 2963 3694 42 73728 0 0 getty [ 46.902835] [ 2964] 0 2964 3694 38 77824 0 0 getty [ 46.910966] [ 2965] 0 2965 3649 40 77824 0 0 getty [ 46.919119] [ 2986] 0 2986 17821 196 192512 0 0 sshd [ 46.927184] [ 2988] 0 2988 4383 513 40960 0 0 syzkaller990514 [ 46.936189] Out of memory: Kill process 2744 (dhclient) score 0 or sacrifice child [ 46.944345] Killed process 2744 (dhclient) total-vm:9972kB, anon-rss:2296kB, file-rss:0kB, shmem-rss:0kB [ 46.970215] syzkaller990514 invoked oom-killer: gfp_mask=0x14000c0(GFP_KERNEL), nodemask=(null), order=0, oom_score_adj=0 [ 46.981486] syzkaller990514 cpuset=/ mems_allowed=0 [ 46.986533] CPU: 1 PID: 2988 Comm: syzkaller990514 Not tainted 4.14.0-rc5-mm1+ #20 [ 46.994218] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.003556] Call Trace: [ 47.006132] dump_stack+0x194/0x257 [ 47.009745] ? arch_local_irq_restore+0x53/0x53 [ 47.014398] ? dump_header+0x1d9/0xe0e [ 47.018267] dump_header+0x28e/0xe0e [ 47.021960] ? pagefault_out_of_memory+0x152/0x152 [ 47.026856] ? check_noncircular+0x20/0x20 [ 47.031055] ? print_irqtrace_events+0x270/0x270 [ 47.035777] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 47.040943] ? print_irqtrace_events+0x270/0x270 [ 47.045664] ? __lock_acquire+0x6aa/0x3d50 [ 47.049868] ? find_held_lock+0x35/0x1d0 [ 47.053906] ? check_noncircular+0x20/0x20 [ 47.058123] ? task_will_free_mem+0x252/0xaa0 [ 47.062602] ? find_held_lock+0x35/0x1d0 [ 47.066636] ? ___ratelimit+0x30d/0x630 [ 47.070577] ? lock_downgrade+0x990/0x990 [ 47.074695] ? do_raw_spin_trylock+0x190/0x190 [ 47.079245] ? mark_held_locks+0xaf/0x100 [ 47.083373] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 47.088456] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 47.093442] ? trace_hardirqs_on+0xd/0x10 [ 47.097558] ? ___ratelimit+0x95/0x630 [ 47.101423] ? idr_get_free_cmn+0xfd0/0xfd0 [ 47.105727] ? check_noncircular+0x20/0x20 [ 47.109941] ? find_held_lock+0x138/0x1d0 [ 47.114087] oom_kill_process+0x86d/0x13c0 [ 47.118318] ? has_ns_capability_noaudit+0x163/0x2a0 [ 47.123410] ? lock_downgrade+0x990/0x990 [ 47.127555] ? oom_evaluate_task+0x480/0x480 [ 47.131974] ? security_capable_noaudit+0x8b/0xc0 [ 47.136802] ? has_ns_capability_noaudit+0x18c/0x2a0 [ 47.141880] ? has_capability+0x30/0x30 [ 47.145825] ? check_noncircular+0x20/0x20 [ 47.150037] ? has_capability_noaudit+0x24/0x30 [ 47.154674] ? oom_badness+0xd1/0x980 [ 47.158438] ? lock_release+0xa40/0xa40 [ 47.162377] ? do_try_to_free_pages+0xc53/0x1020 [ 47.167101] ? find_lock_task_mm+0x460/0x460 [ 47.171479] ? find_held_lock+0x35/0x1d0 [ 47.175515] ? out_of_memory+0xaa9/0x11d0 [ 47.179630] ? lock_downgrade+0x990/0x990 [ 47.183745] ? lock_release+0xa40/0xa40 [ 47.187681] ? lock_acquire+0x1d5/0x580 [ 47.191623] ? __alloc_pages_slowpath+0x1001/0x2db0 [ 47.196624] ? oom_evaluate_task+0x284/0x480 [ 47.201003] out_of_memory+0x7dc/0x11d0 [ 47.204948] ? trace_hardirqs_on+0xd/0x10 [ 47.209068] ? oom_killer_disable+0x310/0x310 [ 47.213528] ? mutex_trylock+0x23a/0x2d0 [ 47.217559] ? __ww_mutex_wakeup_for_backoff+0x240/0x240 [ 47.222974] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 47.228835] __alloc_pages_slowpath+0x1d9d/0x2db0 [ 47.233668] ? warn_alloc+0x2f0/0x2f0 [ 47.237439] ? lock_downgrade+0x990/0x990 [ 47.241559] ? load_balance+0x33b0/0x33b0 [ 47.245675] ? print_irqtrace_events+0x270/0x270 [ 47.250398] ? print_irqtrace_events+0x270/0x270 [ 47.255119] ? mark_held_locks+0xaf/0x100 [ 47.259235] ? _raw_spin_unlock_irq+0x27/0x70 [ 47.263698] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 47.268678] ? trace_hardirqs_on+0xd/0x10 [ 47.272803] ? check_noncircular+0x20/0x20 [ 47.277006] ? retint_kernel+0x10/0x10 [ 47.281039] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 47.286027] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 47.290785] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 47.296645] ? __might_sleep+0x95/0x190 [ 47.300592] __alloc_pages_nodemask+0x9fb/0xd80 [ 47.305233] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 47.310215] ? mark_held_locks+0xaf/0x100 [ 47.314330] ? retint_kernel+0x10/0x10 [ 47.318193] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 47.323175] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 47.327904] ? retint_kernel+0x10/0x10 [ 47.331766] ? alloc_pages_current+0x86/0x1e0 [ 47.336233] alloc_pages_current+0xb6/0x1e0 [ 47.340526] relay_open_buf.part.10+0x22e/0x9b0 [ 47.345172] relay_open+0x57a/0xa40 [ 47.348769] ? relay_open_buf.part.10+0x9b0/0x9b0 [ 47.353579] ? __debugfs_create_file+0x2cc/0x3e0 [ 47.358307] ? debugfs_create_file+0x57/0x70 [ 47.362686] do_blk_trace_setup+0x4a4/0xcf0 [ 47.366977] ? blk_tracer_print_line+0x40/0x40 [ 47.371527] ? __might_sleep+0x95/0x190 [ 47.375478] ? kasan_check_write+0x14/0x20 [ 47.379678] ? _copy_from_user+0x99/0x110 [ 47.383794] blk_trace_setup+0xbd/0x180 [ 47.387737] ? do_blk_trace_setup+0xcf0/0xcf0 [ 47.392213] ? avc_has_extended_perms+0x6e5/0x12c0 [ 47.397121] sg_ioctl+0xc71/0x2d90 [ 47.400627] ? lock_release+0xa40/0xa40 [ 47.404572] ? __handle_mm_fault+0x587/0x39c0 [ 47.409043] ? sg_new_write.isra.20+0x830/0x830 [ 47.413679] ? is_bpf_text_address+0xa4/0x120 [ 47.418145] ? avc_has_extended_perms+0x7fa/0x12c0 [ 47.423051] ? avc_ss_reset+0x110/0x110 [ 47.426991] ? find_held_lock+0x35/0x1d0 [ 47.431034] ? __do_page_fault+0x64c/0xd60 [ 47.435235] ? lock_downgrade+0x990/0x990 [ 47.439356] ? handle_mm_fault+0x410/0x8d0 [ 47.443570] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 47.449419] ? up_read+0x1a/0x40 [ 47.452753] ? rcu_note_context_switch+0x710/0x710 [ 47.457654] ? sg_new_write.isra.20+0x830/0x830 [ 47.462287] do_vfs_ioctl+0x1b1/0x1520 [ 47.466140] ? _cond_resched+0x14/0x30 [ 47.469996] ? ioctl_preallocate+0x2b0/0x2b0 [ 47.474377] ? selinux_capable+0x40/0x40 [ 47.478405] ? putname+0xf3/0x130 [ 47.481825] ? do_sys_open+0x320/0x6d0 [ 47.485687] ? security_file_ioctl+0x89/0xb0 [ 47.490066] SyS_ioctl+0x8f/0xc0 [ 47.493403] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 47.498124] RIP: 0033:0x443ec9 [ 47.501280] RSP: 002b:00007fff4499fc78 EFLAGS: 00000206 ORIG_RAX: 0000000000000010 [ 47.508955] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443ec9 [ 47.516190] RDX: 000000002084cf90 RSI: 00000000c0481273 RDI: 0000000000000003 [ 47.523425] RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 [ 47.530659] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000401bb0 [ 47.537893] R13: 0000000000401c40 R14: 0000000000000000 R15: 0000000000000000 [ 47.545435] Mem-Info: [ 47.547908] active_anon:1667 inactive_anon:33 isolated_anon:0 [ 47.547908] active_file:40 inactive_file:94 isolated_file:0 [ 47.547908] unevictable:0 dirty:0 writeback:0 unstable:0 [ 47.547908] slab_reclaimable:5962 slab_unreclaimable:82879 [ 47.547908] mapped:27 shmem:39 pagetables:270 bounce:0 [ 47.547908] free:24218 free_pcp:50 free_cma:0 [ 47.580065] Node 0 active_anon:6668kB inactive_anon:132kB active_file:208kB inactive_file:196kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:8kB dirty:0kB writeback:0kB shmem:156kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 2048kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no [ 47.606877] Node 0 DMA free:15908kB min:160kB low:200kB high:240kB active_anon:0kB inactive_anon:0kB 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 [ 47.633032] lowmem_reserve[]: 0 2886 6400 6400 [ 47.637675] Node 0 DMA32 free:44096kB min:30408kB low:38008kB high:45608kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2958448kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB [ 47.664868] lowmem_reserve[]: 0 0 3513 3513 [ 47.669232] Node 0 Normal free:37132kB min:37008kB low:46260kB high:55512kB active_anon:6668kB inactive_anon:132kB active_file:108kB inactive_file:416kB unevictable:0kB writepending:0kB present:4718592kB managed:3597488kB mlocked:0kB kernel_stack:2592kB pagetables:1080kB bounce:0kB free_pcp:268kB local_pcp:0kB free_cma:0kB [ 47.697993] lowmem_reserve[]: 0 0 0 0 [ 47.701846] Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB [ 47.715523] Node 0 DMA32: 2*4kB (M) 1*8kB (M) 5*16kB (UM) 3*32kB (M) 4*64kB (UM) 3*128kB (UM) 3*256kB (UM) 3*512kB (UM) 2*1024kB (UM) 3*2048kB (M) 8*4096kB (M) = 44096kB [ 47.730924] Node 0 Normal: 422*4kB (UME) 340*8kB (UM) 227*16kB (UME) 145*32kB (UME) 86*64kB (UM) 41*128kB (ME) 16*256kB (UM) 3*512kB (ME) 2*1024kB (UM) 3*2048kB (M) 0*4096kB = 37256kB [ 47.747576] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB [ 47.756212] 75 total pagecache pages [ 47.759977] 0 pages in swap cache [ 47.763487] Swap cache stats: add 0, delete 0, find 0/0 [ 47.768889] Free swap = 0kB [ 47.771911] Total swap = 0kB [ 47.774934] 1965979 pages RAM [ 47.778038] 0 pages HighMem/MovableOnly [ 47.782024] 323018 pages reserved [ 47.785477] Unreclaimable slab info: [ 47.789226] Name Used Total [ 47.794817] TIPC 1KB 7KB [ 47.800228] SCTPv6 2KB 4KB [ 47.805604] DCCPv6 2KB 7KB [ 47.810963] DCCP 2KB 6KB [ 47.816355] fib6_nodes 0KB 4KB [ 47.821739] ip6_dst_cache 6KB 11KB [ 47.829258] RAWv6 9KB 13KB [ 47.837377] UDPv6 12KB 14KB [ 47.842758] TCPv6 2KB 5KB [ 47.848151] sd_ext_cdb 0KB 3KB [ 47.853517] scsi_sense_cache 110KB 132KB [ 47.858888] virtio_scsi_cmd 16KB 16KB [ 47.864260] sgpool-128 8KB 8KB [ 47.869628] sgpool-64 4KB 6KB [ 47.874998] sgpool-32 181KB 181KB [ 47.880373] sgpool-16 30KB 30KB [ 47.885748] sgpool-8 219KB 221KB [ 47.891118] cfq_io_cq 23KB 23KB [ 47.896485] cfq_queue 26KB 38KB [ 47.901851] mqueue_inode_cache 1KB 7KB [ 47.907306] nfs_commit_data 3KB 7KB [ 47.912675] nfs_write_data 34KB 37KB [ 47.918049] jbd2_inode 1KB 3KB [ 47.923424] ext4_system_zone 0KB 3KB [ 47.928797] bio-1 1KB 3KB [ 47.934174] rpc_buffers 17KB 19KB [ 47.940585] rpc_tasks 2KB 3KB [ 47.947288] UNIX 433KB 435KB [ 47.963792] tcp_bind_bucket 0KB 4KB [ 47.971629] ip_fib_trie 0KB 3KB [ 47.977793] ip_fib_alias 0KB 3KB [ 47.983885] ip_dst_cache 4KB 7KB [ 47.989309] RAW 5KB 7KB [ 47.994716] UDP 30KB 32KB [ 48.000163] request_sock_TCP 0KB 3KB [ 48.005544] TCP 7KB 15KB [ 48.010924] hugetlbfs_inode_cache 1KB 7KB [ 48.016641] eventpoll_pwq 10KB 11KB [ 48.022032] eventpoll_epi 18KB 19KB [ 48.027387] inotify_inode_mark 2KB 7KB [ 48.032836] request_queue 33KB 67KB [ 48.038205] blkdev_ioc 31KB 31KB [ 48.043564] bio-0 304KB 304KB [ 48.048929] biovec-(1<<(21-12)) 404KB 404KB [ 48.054471] biovec-128 114KB 114KB [ 48.059826] biovec-64 29KB 31KB [ 48.065190] biovec-16 12KB 15KB [ 48.070558] khugepaged_mm_slot 0KB 3KB [ 48.076005] uid_cache 1KB 3KB [ 48.081394] dmaengine-unmap-2 0KB 3KB [ 48.086767] skbuff_fclone_cache 128KB 131KB [ 48.092311] skbuff_head_cache 1816KB 1818KB [ 48.098544] configfs_dir_cache 0KB 4KB [ 48.104029] file_lock_cache 147KB 150KB [ 48.109398] file_lock_ctx 1KB 3KB [ 48.114765] fsnotify_mark_connector 1KB 3KB [ 48.120655] shmem_inode_cache 781KB 781KB [ 48.126035] task_delay_info 276KB 426KB [ 48.131404] sigqueue 311KB 330KB [ 48.136771] kernfs_node_cache 1701KB 1704KB [ 48.142140] mnt_cache 14KB 20KB [ 48.147510] filp 8168KB 8186KB [ 48.152879] names_cache 111915KB 111936KB [ 48.158251] avc_node 2KB 3KB [ 48.163619] selinux_file_security 407KB 410KB [ 48.169335] selinux_inode_security 1544KB 1548KB [ 48.175151] key_jar 2KB 7KB [ 48.180518] nsproxy 0KB 3KB [ 48.185888] vm_area_struct 17328KB 17363KB [ 48.191259] mm_struct 3573KB 3657KB [ 48.196627] fs_cache 369KB 500KB [ 48.202004] files_cache 1380KB 1593KB [ 48.207391] signal_cache 2228KB 2745KB [ 48.212763] sighand_cache 182KB 277KB [ 48.218131] task_struct 9126KB 9180KB [ 48.223500] cred_jar 2138KB 2460KB [ 48.228868] anon_vma_chain 7290KB 7363KB [ 48.235083] anon_vma 162KB 277KB [ 48.240457] pid 193KB 304KB [ 48.245826] Acpi-Operand 105KB 166KB [ 48.251196] Acpi-Namespace 18KB 19KB [ 48.256567] numa_policy 0KB 3KB [ 48.261933] trace_event_file 139KB 139KB [ 48.267300] ftrace_event_field 245KB 248KB [ 48.272753] pool_workqueue 9KB 12KB [ 48.278122] page->ptl 2799KB 2885KB [ 48.283514] kmalloc-262144 1032KB 1032KB [ 48.288883] kmalloc-131072 650KB 650KB [ 48.294249] kmalloc-65536 264KB 264KB [ 48.299616] kmalloc-32768 462KB 462KB [ 48.304994] kmalloc-16384 132KB 132KB [ 48.310366] kmalloc-8192 346KB 346KB [ 48.315733] kmalloc-4096 14105KB 14135KB [ 48.321106] kmalloc-2048 2785KB 2785KB [ 48.326476] kmalloc-1024 3835KB 3835KB [ 48.331844] kmalloc-512 3343KB 3360KB [ 48.337213] kmalloc-256 1275KB 1455KB [ 48.342581] kmalloc-128 318KB 452KB [ 48.347952] kmalloc-96 353KB 388KB [ 48.353337] kmalloc-64 343KB 428KB [ 48.358708] kmalloc-32 977KB 1409KB [ 48.364079] kmalloc-192 144KB 184KB [ 48.370297] kmem_cache 90KB 93KB [ 48.375668] [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name [ 48.384265] [ 1516] 0 1516 5316 112 90112 0 -1000 udevd [ 48.392517] [ 1620] 0 1620 5315 113 86016 0 -1000 udevd [ 48.400693] [ 1621] 0 1621 5315 112 86016 0 -1000 udevd [ 48.408828] [ 2874] 0 2874 30604 145 122880 0 0 rsyslogd [ 48.417224] [ 2909] 0 2909 4725 49 86016 0 0 cron [ 48.425274] [ 2935] 0 2935 12490 153 143360 0 -1000 sshd [ 48.433321] [ 2959] 0 2959 3694 38 77824 0 0 getty [ 48.441459] [ 2960] 0 2960 3694 40 77824 0 0 getty [ 48.449593] [ 2961] 0 2961 3694 40 69632 0 0 getty [ 48.457725] [ 2962] 0 2962 3694 40 69632 0 0 getty [ 48.465858] [ 2963] 0 2963 3694 42 73728 0 0 getty [ 48.473994] [ 2964] 0 2964 3694 38 77824 0 0 getty [ 48.482133] [ 2965] 0 2965 3649 40 77824 0 0 getty [ 48.490270] [ 2986] 0 2986 17821 196 192512 0 0 sshd [ 48.498318] [ 2988] 0 2988 4383 513 40960 0 0 syzkaller990514 [ 48.507318] Out of memory: Kill process 2988 (syzkaller990514) score 0 or sacrifice child [ 48.515681] Killed process 2988 (syzkaller990514) total-vm:17532kB, anon-rss:2052kB, file-rss:0kB, shmem-rss:0kB [ 48.527927] oom_reaper: reaped process 2988 (syzkaller990514), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB [ 48.551574] rs:main Q:Reg invoked oom-killer: gfp_mask=0x14200ca(GFP_HIGHUSER_MOVABLE), nodemask=(null), order=0, oom_score_adj=0 [ 48.563647] rs:main Q:Reg cpuset=/ mems_allowed=0 [ 48.568660] CPU: 0 PID: 2875 Comm: rs:main Q:Reg Not tainted 4.14.0-rc5-mm1+ #20 [ 48.576178] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.578178] syzkaller990514: page allocation failure: order:0, mode:0x14000c0(GFP_KERNEL), nodemask=(null) [ 48.578203] syzkaller990514 cpuset=/ mems_allowed=0 [ 48.600255] Call Trace: [ 48.602824] dump_stack+0x194/0x257 [ 48.606433] ? arch_local_irq_restore+0x53/0x53 [ 48.611086] ? dump_header+0x1d9/0xe0e [ 48.614955] dump_header+0x28e/0xe0e [ 48.618660] ? pagefault_out_of_memory+0x152/0x152 [ 48.623573] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 48.628757] ? print_irqtrace_events+0x270/0x270 [ 48.633493] ? __lock_acquire+0x6aa/0x3d50 [ 48.637727] ? check_noncircular+0x20/0x20 [ 48.641936] ? task_will_free_mem+0x252/0xaa0 [ 48.646404] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 48.651575] ? find_held_lock+0x35/0x1d0 [ 48.655623] ? ___ratelimit+0x30d/0x630 [ 48.659574] ? lock_downgrade+0x990/0x990 [ 48.663705] ? do_raw_spin_trylock+0x190/0x190 [ 48.668273] ? mark_held_locks+0xaf/0x100 [ 48.672399] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 48.677480] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 48.682472] ? trace_hardirqs_on+0xd/0x10 [ 48.686600] ? ___ratelimit+0x95/0x630 [ 48.690465] ? idr_get_free_cmn+0xfd0/0xfd0 [ 48.694762] ? check_noncircular+0x20/0x20 [ 48.698971] ? find_held_lock+0x138/0x1d0 [ 48.703107] oom_kill_process+0x86d/0x13c0 [ 48.707327] ? has_ns_capability_noaudit+0x163/0x2a0 [ 48.712413] ? check_noncircular+0x20/0x20 [ 48.716628] ? oom_evaluate_task+0x480/0x480 [ 48.721036] ? security_capable_noaudit+0x8b/0xc0 [ 48.725865] ? find_held_lock+0x35/0x1d0 [ 48.729909] ? check_noncircular+0x20/0x20 [ 48.734123] ? oom_unkillable_task+0x394/0x4c0 [ 48.738682] ? lock_downgrade+0x990/0x990 [ 48.742809] ? lock_release+0xa40/0xa40 [ 48.746756] ? do_try_to_free_pages+0xc53/0x1020 [ 48.751491] ? find_lock_task_mm+0x460/0x460 [ 48.755884] ? find_held_lock+0x35/0x1d0 [ 48.759931] ? out_of_memory+0xaa9/0x11d0 [ 48.764055] ? lock_downgrade+0x990/0x990 [ 48.768269] ? lock_release+0xa40/0xa40 [ 48.772220] ? __alloc_pages_slowpath+0x1001/0x2db0 [ 48.777223] ? oom_evaluate_task+0x284/0x480 [ 48.781616] out_of_memory+0x7dc/0x11d0 [ 48.785579] ? oom_killer_disable+0x310/0x310 [ 48.790049] ? mutex_trylock+0x23a/0x2d0 [ 48.794090] ? __lock_is_held+0xb6/0x140 [ 48.798128] ? __ww_mutex_wakeup_for_backoff+0x240/0x240 [ 48.803572] __alloc_pages_slowpath+0x1d9d/0x2db0 [ 48.808402] ? __radix_tree_insert+0x7b0/0x7b0 [ 48.812986] ? warn_alloc+0x2f0/0x2f0 [ 48.816768] ? find_get_entry+0x513/0x9e0 [ 48.820891] ? lock_downgrade+0x990/0x990 [ 48.825030] ? radix_tree_lookup_slot+0x99/0xe0 [ 48.829681] ? __lock_acquire+0x6aa/0x3d50 [ 48.833891] ? mark_held_locks+0xaf/0x100 [ 48.838028] ? find_get_entry+0x53c/0x9e0 [ 48.842158] ? check_noncircular+0x20/0x20 [ 48.846381] ? blk_init_request_from_bio+0x3d0/0x3d0 [ 48.851459] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 48.856630] ? __radix_tree_lookup+0x435/0x5e0 [ 48.861212] ? __lock_is_held+0xb6/0x140 [ 48.865274] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 48.871149] ? __might_sleep+0x95/0x190 [ 48.875108] __alloc_pages_nodemask+0x9fb/0xd80 [ 48.879764] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 48.884761] ? add_to_page_cache_lru+0x510/0x510 [ 48.889503] ? check_noncircular+0x20/0x20 [ 48.893713] ? check_noncircular+0x20/0x20 [ 48.897927] ? __lock_acquire+0x6aa/0x3d50 [ 48.902141] ? radix_tree_next_chunk+0x5e8/0xdf0 [ 48.906901] alloc_pages_current+0xb6/0x1e0 [ 48.911203] __page_cache_alloc+0x334/0x500 [ 48.915501] ? rcu_read_lock_held+0xa9/0xc0 [ 48.919803] ? trace_event_raw_event_file_check_and_advance_wb_err+0x490/0x490 [ 48.927159] filemap_fault+0xefc/0x1c20 [ 48.931131] ? __lock_page_or_retry+0x4f0/0x4f0 [ 48.935790] ? filemap_map_pages+0x942/0x15d0 [ 48.940291] ? find_get_entries_tag+0xeb0/0xeb0 [ 48.944941] ? futex_wait_setup+0x14a/0x3d0 [ 48.949248] ? check_noncircular+0x20/0x20 [ 48.953458] ? __lock_acquire+0x6aa/0x3d50 [ 48.957667] ? __lock_acquire+0x6aa/0x3d50 [ 48.961876] ? futex_wait_queue_me+0x524/0x7e0 [ 48.966436] ? check_noncircular+0x20/0x20 [ 48.970642] ? refill_pi_state_cache.part.6+0x2f0/0x2f0 [ 48.975996] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 48.981169] ? lock_acquire+0x1d5/0x580 [ 48.985119] ? lock_acquire+0x1d5/0x580 [ 48.989071] ? ext4_filemap_fault+0x7a/0xad [ 48.993377] ? lock_release+0xa40/0xa40 [ 48.997333] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 49.003192] ? ext4_filemap_fault+0x8d/0xad [ 49.007491] ? rcu_note_context_switch+0x710/0x710 [ 49.012393] ? lock_downgrade+0x990/0x990 [ 49.017573] ? __might_sleep+0x95/0x190 [ 49.021532] ? down_read+0x96/0x150 [ 49.025134] ? ext4_filemap_fault+0x7a/0xad [ 49.029432] ? __down_interruptible+0x6b0/0x6b0 [ 49.034096] ext4_filemap_fault+0x82/0xad [ 49.038225] __do_fault+0xeb/0x30f [ 49.041740] ? do_raw_spin_trylock+0x190/0x190 [ 49.046296] ? pte_offset_kernel+0xc7/0xc7 [ 49.050507] ? filemap_fdatawait_keep_errors+0xb0/0xb0 [ 49.055760] ? generic_update_time+0x1b2/0x270 [ 49.060335] ? check_noncircular+0x20/0x20 [ 49.064554] __handle_mm_fault+0x1b9b/0x39c0 [ 49.068947] ? __pmd_alloc+0x4e0/0x4e0 [ 49.072822] ? find_held_lock+0x35/0x1d0 [ 49.076870] ? handle_mm_fault+0x248/0x8d0 [ 49.081080] ? lock_downgrade+0x990/0x990 [ 49.085242] handle_mm_fault+0x334/0x8d0 [ 49.089276] ? down_read_trylock+0xdb/0x170 [ 49.093573] ? __do_page_fault+0x31e/0xd60 [ 49.097784] ? __handle_mm_fault+0x39c0/0x39c0 [ 49.102342] ? vmacache_find+0x5f/0x280 [ 49.106289] ? vmacache_update+0xfe/0x130 [ 49.110421] ? find_vma+0x30/0x150 [ 49.113939] __do_page_fault+0x5bd/0xd60 [ 49.117988] ? mm_fault_error+0x2c0/0x2c0 [ 49.122111] ? __lock_is_held+0xb6/0x140 [ 49.126162] do_page_fault+0xee/0x720 [ 49.129941] ? __do_page_fault+0xd60/0xd60 [ 49.134156] ? SyS_futex+0x269/0x390 [ 49.137854] ? do_futex+0x20d0/0x20d0 [ 49.141629] ? SyS_write+0x184/0x220 [ 49.145322] ? retint_user+0x18/0x20 [ 49.149020] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 49.153853] page_fault+0x22/0x30 [ 49.157281] RIP: 0033:0x42c759 [ 49.160445] RSP: 002b:00007febf43dcce0 EFLAGS: 00010202 [ 49.165783] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007febf5e38344 [ 49.173027] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002 [ 49.180270] RBP: 0000000000000000 R08: 0000000001e5eb80 R09: 0000000000000b3b [ 49.187517] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000447f18 [ 49.194760] R13: 000000000044421f R14: 0000000000447ee8 R15: 0000000000000003 [ 49.202037] CPU: 1 PID: 2988 Comm: syzkaller990514 Not tainted 4.14.0-rc5-mm1+ #20 [ 49.202137] Mem-Info: [ 49.202155] active_anon:1122 inactive_anon:33 isolated_anon:0 [ 49.202155] active_file:14 inactive_file:16 isolated_file:0 [ 49.202155] unevictable:0 dirty:0 writeback:0 unstable:0 [ 49.202155] slab_reclaimable:5966 slab_unreclaimable:82949 [ 49.202155] mapped:3 shmem:39 pagetables:261 bounce:0 [ 49.202155] free:15761 free_pcp:0 free_cma:0 [ 49.202169] Node 0 active_anon:4488kB inactive_anon:132kB active_file:56kB inactive_file:64kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:12kB dirty:0kB writeback:0kB shmem:156kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 2048kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no [ 49.202173] Node 0 DMA free:15908kB min:160kB low:200kB high:240kB active_anon:0kB inactive_anon:0kB 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 [ 49.202189] lowmem_reserve[]: 0 2886 6400 6400 [ 49.202203] Node 0 DMA32 free:29216kB min:30408kB low:38008kB high:45608kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:3129332kB managed:2958448kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB [ 49.202220] lowmem_reserve[]: 0 0 3513 3513 [ 49.202234] Node 0 Normal free:17920kB min:37008kB low:46260kB high:55512kB active_anon:4488kB inactive_anon:132kB active_file:56kB inactive_file:68kB unevictable:0kB writepending:0kB present:4718592kB managed:3597488kB mlocked:0kB kernel_stack:2592kB pagetables:1044kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB [ 49.202250] lowmem_reserve[]: 0 0 0 0 [ 49.202264] Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15908kB [ 49.202345] Node 0 DMA32: 2*4kB (M) 2*8kB (UM) 4*16kB (M) 4*32kB (UM) 3*64kB (M) 2*128kB (M) 2*256kB (M) 3*512kB (UM) 2*1024kB (UM) 4*2048kB (UM) 4*4096kB (M) = 29336kB [ 49.202410] Node 0 Normal: 374*4kB (UM) 271*8kB (UM) 181*16kB (UM) 115*32kB (UM) 62*64kB (UM) 24*128kB (UM) 5*256kB (UM) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 18560kB [ 49.202469] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB [ 49.202472] 88 total pagecache pages [ 49.202481] 0 pages in swap cache [ 49.202486] Swap cache stats: add 0, delete 0, find 0/0 [ 49.202489] Free swap = 0kB [ 49.202491] Total swap = 0kB [ 49.202494] 1965979 pages RAM [ 49.202497] 0 pages HighMem/MovableOnly [ 49.202500] 323018 pages reserved [ 49.202530] Unreclaimable slab info: [ 49.202547] Name Used Total [ 49.202566] TIPC 1KB 7KB [ 49.202576] SCTPv6 2KB 4KB [ 49.202586] DCCPv6 2KB 7KB [ 49.202593] DCCP 2KB 6KB [ 49.202614] fib6_nodes 0KB 4KB [ 49.202619] ip6_dst_cache 6KB 11KB [ 49.202625] RAWv6 9KB 13KB [ 49.202632] UDPv6 12KB 14KB [ 49.202639] TCPv6 2KB 5KB [ 49.202652] sd_ext_cdb 0KB 3KB [ 49.202657] scsi_sense_cache 110KB 132KB [ 49.202663] virtio_scsi_cmd 16KB 16KB [ 49.202671] sgpool-128 8KB 8KB [ 49.202676] sgpool-64 4KB 6KB [ 49.202682] sgpool-32 189KB 189KB [ 49.202687] sgpool-16 30KB 30KB [ 49.202692] sgpool-8 219KB 221KB [ 49.202699] cfq_io_cq 23KB 23KB [ 49.202705] cfq_queue 34KB 38KB [ 49.202711] mqueue_inode_cache 1KB 7KB [ 49.202717] nfs_commit_data 3KB 7KB [ 49.202722] nfs_write_data 34KB 37KB [ 49.202731] jbd2_inode 1KB 3KB [ 49.202737] ext4_system_zone 0KB 3KB [ 49.202748] bio-1 1KB 3KB [ 49.202761] rpc_buffers 17KB 19KB [ 49.202766] rpc_tasks 2KB 3KB [ 49.202772] UNIX 433KB 435KB [ 49.202780] tcp_bind_bucket 0KB 4KB [ 49.202788] ip_fib_trie 0KB 3KB [ 49.202793] ip_fib_alias 0KB 3KB [ 49.202798] ip_dst_cache 4KB 7KB [ 49.202804] RAW 5KB 7KB [ 49.202810] UDP 30KB 32KB [ 49.202816] request_sock_TCP 0KB 3KB [ 49.202821] TCP 7KB 15KB [ 49.202826] hugetlbfs_inode_cache 1KB 7KB [ 49.202832] eventpoll_pwq 10KB 11KB [ 49.202837] eventpoll_epi 18KB 19KB [ 49.202842] inotify_inode_mark 2KB 7KB [ 49.202849] request_queue 33KB 67KB [ 49.202855] blkdev_ioc 31KB 31KB [ 49.202861] bio-0 308KB 308KB [ 49.202866] biovec-(1<<(21-12)) 404KB 404KB [ 49.202871] biovec-128 114KB 114KB [ 49.202876] biovec-64 31KB 31KB [ 49.202881] biovec-16 12KB 15KB [ 49.202886] khugepaged_mm_slot 0KB 3KB [ 49.202896] uid_cache 1KB 3KB [ 49.202902] dmaengine-unmap-2 0KB 3KB [ 49.202909] skbuff_fclone_cache 128KB 131KB [ 49.202914] skbuff_head_cache 1816KB 1818KB [ 49.202920] configfs_dir_cache 0KB 4KB [ 49.202926] file_lock_cache 147KB 150KB [ 49.202931] file_lock_ctx 1KB 3KB [ 49.202936] fsnotify_mark_connector 1KB 3KB [ 49.202943] shmem_inode_cache 781KB 781KB [ 49.202948] task_delay_info 276KB 426KB [ 49.202955] sigqueue 311KB 330KB [ 49.202960] kernfs_node_cache 1701KB 1704KB [ 49.202965] mnt_cache 14KB 20KB [ 49.202971] filp 8168KB 8186KB [ 49.202976] names_cache 111915KB 111936KB [ 49.202985] avc_node 2KB 3KB [ 49.202991] selinux_file_security 407KB 410KB [ 49.202997] selinux_inode_security 1544KB 1548KB [ 49.203006] key_jar 2KB 7KB [ 49.203029] nsproxy 0KB 3KB [ 49.203034] vm_area_struct 17328KB 17363KB [ 49.203039] mm_struct 3573KB 3657KB [ 49.203045] fs_cache 369KB 500KB [ 49.203050] files_cache 1380KB 1593KB [ 49.203056] signal_cache 2228KB 2745KB [ 49.203061] sighand_cache 182KB 277KB [ 49.203066] task_struct 9126KB 9180KB [ 49.203072] cred_jar 2138KB 2460KB [ 49.203077] anon_vma_chain 7290KB 7363KB [ 49.203082] anon_vma 162KB 277KB [ 49.203087] pid 193KB 304KB [ 49.203092] Acpi-Operand 105KB 166KB [ 49.203100] Acpi-Namespace 18KB 19KB [ 49.203106] numa_policy 0KB 3KB [ 49.203111] trace_event_file 139KB 139KB [ 49.203117] ftrace_event_field 245KB 248KB [ 49.203122] pool_workqueue 9KB 12KB [ 49.203128] page->ptl 2799KB 2885KB [ 49.203156] kmalloc-262144 1032KB 1032KB [ 49.203162] kmalloc-131072 650KB 650KB [ 49.203167] kmalloc-65536 264KB 264KB [ 49.203172] kmalloc-32768 462KB 462KB [ 49.203177] kmalloc-16384 132KB 132KB [ 49.203182] kmalloc-8192 346KB 346KB [ 49.203187] kmalloc-4096 14105KB 14135KB [ 49.203193] kmalloc-2048 2785KB 2785KB [ 49.203198] kmalloc-1024 3843KB 3843KB [ 49.203203] kmalloc-512 3343KB 3360KB [ 49.203208] kmalloc-256 1275KB 1455KB [ 49.203213] kmalloc-128 318KB 452KB [ 49.203218] kmalloc-96 353KB 388KB [ 49.203223] kmalloc-64 343KB 428KB [ 49.203228] kmalloc-32 977KB 1409KB [ 49.203277] kmalloc-192 144KB 184KB [ 49.203282] kmem_cache 90KB 93KB [ 49.203286] [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name [ 49.203334] [ 1516] 0 1516 5316 112 90112 0 -1000 udevd [ 49.203358] [ 1620] 0 1620 5315 113 86016 0 -1000 udevd [ 49.203369] [ 1621] 0 1621 5315 112 86016 0 -1000 udevd [ 49.203379] [ 2874] 0 2874 30604 145 122880 0 0 rsyslogd [ 49.203390] [ 2909] 0 2909 4725 49 86016 0 0 cron [ 49.203401] [ 2935] 0 2935 12490 153 143360 0 -1000 sshd [ 49.203411] [ 2959] 0 2959 3694 38 77824 0 0 getty [ 49.203422] [ 2960] 0 2960 3694 40 77824 0 0 getty [ 49.203432] [ 2961] 0 2961 3694 40 69632 0 0 getty [ 49.203443] [ 2962] 0 2962 3694 40 69632 0 0 getty [ 49.203453] [ 2963] 0 2963 3694 42 73728 0 0 getty [ 49.203464] [ 2964] 0 2964 3694 38 77824 0 0 getty [ 49.203474] [ 2965] 0 2965 3649 40 77824 0 0 getty [ 49.203486] [ 2986] 0 2986 17821 196 192512 0 0 sshd [ 49.203496] [ 2988] 0 2988 4383 0 36864 0 0 syzkaller990514 [ 49.203501] Out of memory: Kill process 2986 (sshd) score 0 or sacrifice child [ 49.203798] Killed process 2986 (sshd) total-vm:71284kB, anon-rss:780kB, file-rss:0kB, shmem-rss:4kB [ 50.153453] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.162775] Call Trace: [ 50.165337] dump_stack+0x194/0x257 [ 50.168935] ? arch_local_irq_restore+0x53/0x53 [ 50.173571] ? del_timer_sync+0xeb/0x240 [ 50.177608] warn_alloc+0x1c2/0x2f0 [ 50.181203] ? zone_watermark_ok_safe+0x400/0x400 [ 50.186023] ? call_timer_fn+0x830/0x830 [ 50.190059] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 50.195919] __alloc_pages_slowpath+0x25b5/0x2db0 [ 50.200753] ? warn_alloc+0x2f0/0x2f0 [ 50.204522] ? lock_downgrade+0x990/0x990 [ 50.208637] ? load_balance+0x33b0/0x33b0 [ 50.212760] ? print_irqtrace_events+0x270/0x270 [ 50.217481] ? mark_held_locks+0xaf/0x100 [ 50.221598] ? _raw_spin_unlock_irq+0x27/0x70 [ 50.226060] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 50.231046] ? trace_hardirqs_on+0xd/0x10 [ 50.235163] ? mmdrop+0x18/0x30 [ 50.238417] ? check_noncircular+0x20/0x20 [ 50.242621] ? retint_kernel+0x10/0x10 [ 50.246475] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 50.251462] ? mark_held_locks+0xaf/0x100 [ 50.255576] ? retint_kernel+0x10/0x10 [ 50.259431] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 50.264438] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 50.270298] ? __might_sleep+0x95/0x190 [ 50.274244] __alloc_pages_nodemask+0x9fb/0xd80 [ 50.278885] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 50.283868] ? retint_kernel+0x10/0x10 [ 50.287724] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 50.292708] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 50.297438] ? retint_kernel+0x10/0x10 [ 50.301306] ? audit_kill_trees+0x430/0x430 [ 50.305602] alloc_pages_current+0xb6/0x1e0 [ 50.309895] relay_open_buf.part.10+0x22e/0x9b0 [ 50.314539] relay_open+0x57a/0xa40 [ 50.318140] ? relay_open_buf.part.10+0x9b0/0x9b0 [ 50.322952] ? __debugfs_create_file+0x2cc/0x3e0 [ 50.327681] ? debugfs_create_file+0x57/0x70 [ 50.332059] do_blk_trace_setup+0x4a4/0xcf0 [ 50.336352] ? blk_tracer_print_line+0x40/0x40 [ 50.340900] ? __might_sleep+0x95/0x190 [ 50.344849] ? kasan_check_write+0x14/0x20 [ 50.349050] ? _copy_from_user+0x99/0x110 [ 50.353165] blk_trace_setup+0xbd/0x180 [ 50.357106] ? do_blk_trace_setup+0xcf0/0xcf0 [ 50.361577] ? avc_has_extended_perms+0x6e5/0x12c0 [ 50.366478] sg_ioctl+0xc71/0x2d90 [ 50.369984] ? lock_release+0xa40/0xa40 [ 50.373923] ? __handle_mm_fault+0x587/0x39c0 [ 50.378389] ? sg_new_write.isra.20+0x830/0x830 [ 50.383029] ? is_bpf_text_address+0xa4/0x120 [ 50.387496] ? avc_has_extended_perms+0x7fa/0x12c0 [ 50.392402] ? avc_ss_reset+0x110/0x110 [ 50.396341] ? find_held_lock+0x35/0x1d0 [ 50.400465] ? __do_page_fault+0x64c/0xd60 [ 50.404667] ? lock_downgrade+0x990/0x990 [ 50.408792] ? handle_mm_fault+0x410/0x8d0 [ 50.413012] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 50.418866] ? up_read+0x1a/0x40 [ 50.422204] ? rcu_note_context_switch+0x710/0x710 [ 50.427108] ? sg_new_write.isra.20+0x830/0x830 [ 50.431742] do_vfs_ioctl+0x1b1/0x1520 [ 50.435595] ? _cond_resched+0x14/0x30 [ 50.439452] ? ioctl_preallocate+0x2b0/0x2b0 [ 50.443830] ? selinux_capable+0x40/0x40 [ 50.447859] ? putname+0xf3/0x130 [ 50.451282] ? do_sys_open+0x320/0x6d0 [ 50.455145] ? security_file_ioctl+0x89/0xb0 [ 50.459521] SyS_ioctl+0x8f/0xc0 [ 50.462859] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 50.467579] RIP: 0033:0x443ec9 [ 50.470736] RSP: 002b:00007fff4499fc78 EFLAGS: 00000206 ORIG_RAX: 0000000000000010 [ 50.478409] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443ec9 Connection to ci-upstream-mmots-kasan-gce-1 closed by remote host. [ 50.485644] RD