INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?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-next-kasan-gce-0,10.128.15.194' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 46.346812] syzkaller089610 invoked oom-killer: gfp_mask=0x14000c0(GFP_KERNEL), nodemask=(null), order=0, oom_score_adj=0 [ 46.348462] syzkaller089610 cpuset=/ mems_allowed=0 [ 46.349370] CPU: 0 PID: 2987 Comm: syzkaller089610 Not tainted 4.14.0-rc5-next-20171018+ #36 [ 46.350521] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.351783] Call Trace: [ 46.352144] dump_stack+0x194/0x257 [ 46.352636] ? arch_local_irq_restore+0x53/0x53 [ 46.353266] ? dump_header+0x1d9/0xe0e [ 46.353790] dump_header+0x28e/0xe0e [ 46.354318] ? pagefault_out_of_memory+0x152/0x152 [ 46.354973] ? check_noncircular+0x20/0x20 [ 46.355543] ? mark_lock+0x59f/0x13d0 [ 46.356065] ? print_irqtrace_events+0x270/0x270 [ 46.356703] ? __lock_acquire+0x6aa/0x3d50 [ 46.357276] ? find_held_lock+0x35/0x1d0 [ 46.357826] ? check_noncircular+0x20/0x20 [ 46.358393] ? task_will_free_mem+0x252/0xaa0 [ 46.359012] ? find_held_lock+0x35/0x1d0 [ 46.359568] ? ___ratelimit+0x30d/0x630 [ 46.360101] ? lock_downgrade+0x990/0x990 [ 46.360660] ? do_raw_spin_trylock+0x190/0x190 [ 46.361292] ? mark_held_locks+0xaf/0x100 [ 46.361848] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 46.362527] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 46.363194] ? trace_hardirqs_on+0xd/0x10 [ 46.363753] ? ___ratelimit+0x95/0x630 [ 46.364275] ? idr_get_free_cmn+0xfd0/0xfd0 [ 46.364856] ? check_noncircular+0x20/0x20 [ 46.365420] ? find_held_lock+0x138/0x1d0 [ 46.365981] oom_kill_process+0x86d/0x13c0 [ 46.366552] ? has_ns_capability_noaudit+0x163/0x2a0 [ 46.369079] ? lock_downgrade+0x990/0x990 [ 46.373203] ? oom_evaluate_task+0x480/0x480 [ 46.377588] ? security_capable_noaudit+0x8b/0xc0 [ 46.382401] ? has_ns_capability_noaudit+0x18c/0x2a0 [ 46.387472] ? has_capability+0x30/0x30 [ 46.391416] ? check_noncircular+0x20/0x20 [ 46.395623] ? has_capability_noaudit+0x24/0x30 [ 46.400257] ? oom_badness+0xd1/0x980 [ 46.404025] ? lock_release+0xa40/0xa40 [ 46.407964] ? do_try_to_free_pages+0xc53/0x1020 [ 46.412687] ? find_lock_task_mm+0x460/0x460 [ 46.417067] ? find_held_lock+0x35/0x1d0 [ 46.421104] ? out_of_memory+0xaa9/0x11d0 [ 46.425218] ? lock_downgrade+0x990/0x990 [ 46.429339] ? lock_release+0xa40/0xa40 [ 46.433289] ? lock_acquire+0x1d5/0x580 [ 46.437229] ? __alloc_pages_slowpath+0x1001/0x2db0 [ 46.442216] ? oom_evaluate_task+0x284/0x480 [ 46.446594] out_of_memory+0x7dc/0x11d0 [ 46.450541] ? oom_killer_disable+0x310/0x310 [ 46.455003] ? mutex_trylock+0x23a/0x2d0 [ 46.459037] ? __lock_is_held+0xb6/0x140 [ 46.463064] ? __ww_mutex_wakeup_for_backoff+0x240/0x240 [ 46.468494] __alloc_pages_slowpath+0x1d9d/0x2db0 [ 46.473326] ? warn_alloc+0x2f0/0x2f0 [ 46.477094] ? lock_downgrade+0x990/0x990 [ 46.481208] ? load_balance+0x33b0/0x33b0 [ 46.485325] ? do_raw_spin_trylock+0x190/0x190 [ 46.489877] ? mark_held_locks+0xaf/0x100 [ 46.493991] ? _raw_spin_unlock_irq+0x27/0x70 [ 46.498455] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 46.503442] ? trace_hardirqs_on+0xd/0x10 [ 46.507559] ? mmdrop+0x18/0x30 [ 46.510811] ? check_noncircular+0x20/0x20 [ 46.515031] ? mark_held_locks+0xaf/0x100 [ 46.519149] ? retint_kernel+0x10/0x10 [ 46.523005] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 46.528004] ? __lock_is_held+0xb6/0x140 [ 46.532052] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 46.537916] ? __might_sleep+0x95/0x190 [ 46.541863] __alloc_pages_nodemask+0x9fb/0xd80 [ 46.546502] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 46.551485] ? mark_held_locks+0xaf/0x100 [ 46.555603] ? mark_held_locks+0xaf/0x100 [ 46.559713] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 46.564697] ? retint_kernel+0x10/0x10 [ 46.568552] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 46.573538] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 46.578278] alloc_pages_current+0xb6/0x1e0 [ 46.582570] relay_open_buf.part.10+0x22e/0x9b0 [ 46.587214] relay_open+0x57a/0xa40 [ 46.590811] ? relay_open_buf.part.10+0x9b0/0x9b0 [ 46.595629] ? __debugfs_create_file+0x2cc/0x3e0 [ 46.600364] ? debugfs_create_file+0x57/0x70 [ 46.604743] do_blk_trace_setup+0x4a4/0xcf0 [ 46.609037] ? blk_tracer_print_line+0x40/0x40 [ 46.613590] ? __might_sleep+0x95/0x190 [ 46.617538] ? kasan_check_write+0x14/0x20 [ 46.621738] ? _copy_from_user+0x99/0x110 [ 46.625854] blk_trace_setup+0xbd/0x180 [ 46.629795] ? do_blk_trace_setup+0xcf0/0xcf0 [ 46.634268] ? avc_has_extended_perms+0x6e5/0x12c0 [ 46.639166] sg_ioctl+0xc71/0x2d90 [ 46.642671] ? lock_release+0xa40/0xa40 [ 46.646610] ? __handle_mm_fault+0x587/0x39c0 [ 46.651077] ? sg_new_write.isra.20+0x830/0x830 [ 46.655715] ? is_bpf_text_address+0xa4/0x120 [ 46.660179] ? avc_has_extended_perms+0x7fa/0x12c0 [ 46.665084] ? avc_ss_reset+0x110/0x110 [ 46.669027] ? find_held_lock+0x35/0x1d0 [ 46.673065] ? __do_page_fault+0x64c/0xd60 [ 46.677269] ? lock_downgrade+0x990/0x990 [ 46.681391] ? handle_mm_fault+0x410/0x8d0 [ 46.685605] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 46.691453] ? up_read+0x1a/0x40 [ 46.694790] ? rcu_note_context_switch+0x710/0x710 [ 46.699693] ? sg_new_write.isra.20+0x830/0x830 [ 46.704328] do_vfs_ioctl+0x1b1/0x1520 [ 46.708181] ? _cond_resched+0x14/0x30 [ 46.712041] ? ioctl_preallocate+0x2b0/0x2b0 [ 46.716424] ? selinux_capable+0x40/0x40 [ 46.720452] ? putname+0xf3/0x130 [ 46.723873] ? do_sys_open+0x320/0x6d0 [ 46.727737] ? security_file_ioctl+0x89/0xb0 [ 46.732121] SyS_ioctl+0x8f/0xc0 [ 46.735458] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 46.740180] RIP: 0033:0x443ec9 [ 46.743336] RSP: 002b:00007ffd6ac2f488 EFLAGS: 00000202 ORIG_RAX: 0000000000000010 [ 46.751013] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443ec9 [ 46.758252] RDX: 000000002084cf90 RSI: 00000000c0481273 RDI: 0000000000000003 [ 46.765490] RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 [ 46.772724] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000401bb0 [ 46.780052] R13: 0000000000401c40 R14: 0000000000000000 R15: 0000000000000000 [ 46.787394] Mem-Info: [ 46.790068] active_anon:2252 inactive_anon:32 isolated_anon:0 [ 46.790068] active_file:28 inactive_file:33 isolated_file:0 [ 46.790068] unevictable:0 dirty:0 writeback:0 unstable:0 [ 46.790068] slab_reclaimable:5966 slab_unreclaimable:83085 [ 46.790068] mapped:2 shmem:39 pagetables:268 bounce:0 [ 46.790068] free:24644 free_pcp:214 free_cma:0 [ 46.822236] Node 0 active_anon:9008kB inactive_anon:128kB active_file:156kB inactive_file:1056kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:96kB dirty:0kB writeback:0kB shmem:156kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 2048kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no [ 46.849244] 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 [ 46.875382] lowmem_reserve[]: 0 2886 6400 6400 [ 46.879964] Node 0 DMA32 free:44176kB 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 [ 46.907125] lowmem_reserve[]: 0 0 3513 3513 [ 46.911538] Node 0 Normal free:37632kB min:37008kB low:46260kB high:55512kB active_anon:9008kB inactive_anon:128kB active_file:464kB inactive_file:1016kB unevictable:0kB writepending:0kB present:4718592kB managed:3597488kB mlocked:0kB kernel_stack:2656kB pagetables:1072kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB [ 46.941056] lowmem_reserve[]: 0 0 0 0 [ 46.944895] 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 [ 46.958570] Node 0 DMA32: 2*4kB (M) 1*8kB (M) 4*16kB (M) 4*32kB (UM) 3*64kB (M) 2*128kB (M) 2*256kB (M) 2*512kB (M) 1*1024kB (M) 4*2048kB (UM) 8*4096kB (M) = 44176kB [ 46.973548] Node 0 Normal: 19*4kB (UM) 329*8kB (UME) 222*16kB (UME) 151*32kB (UME) 73*64kB (UME) 33*128kB (UM) 7*256kB (M) 6*512kB (UME) 4*1024kB (UM) 4*2048kB (UM) 0*4096kB = 37140kB [ 46.990098] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB [ 46.998666] 594 total pagecache pages [ 47.002470] 0 pages in swap cache [ 47.005912] Swap cache stats: add 0, delete 0, find 0/0 [ 47.011270] Free swap = 0kB [ 47.014276] Total swap = 0kB [ 47.017304] 1965979 pages RAM [ 47.020414] 0 pages HighMem/MovableOnly [ 47.024397] 323018 pages reserved [ 47.027891] Unreclaimable slab info: [ 47.031676] Name Used Total [ 47.037229] TIPC 1KB 7KB [ 47.042605] SCTPv6 2KB 4KB [ 47.047992] DCCPv6 2KB 7KB [ 47.053376] DCCP 2KB 6KB [ 47.058770] fib6_nodes 0KB 4KB [ 47.064133] ip6_dst_cache 6KB 7KB [ 47.069500] RAWv6 9KB 19KB [ 47.075361] UDPv6 12KB 14KB [ 47.080755] TCPv6 2KB 5KB [ 47.086141] sd_ext_cdb 0KB 3KB [ 47.091529] scsi_sense_cache 111KB 144KB [ 47.096888] virtio_scsi_cmd 16KB 16KB [ 47.102269] sgpool-128 8KB 8KB [ 47.107646] sgpool-64 4KB 6KB [ 47.113039] sgpool-32 141KB 141KB [ 47.118415] sgpool-16 37KB 37KB [ 47.123808] sgpool-8 232KB 232KB [ 47.129172] cfq_io_cq 15KB 19KB [ 47.134552] cfq_queue 26KB 34KB [ 47.139931] mqueue_inode_cache 1KB 7KB [ 47.145397] nfs_commit_data 3KB 7KB [ 47.150776] nfs_write_data 34KB 37KB [ 47.156136] jbd2_inode 1KB 3KB [ 47.161506] ext4_system_zone 0KB 3KB [ 47.166870] bio-1 1KB 3KB [ 47.172245] rpc_buffers 17KB 19KB [ 47.177606] rpc_tasks 2KB 3KB [ 47.182968] UNIX 435KB 435KB [ 47.188348] tcp_bind_bucket 0KB 4KB [ 47.193726] ip_fib_trie 0KB 3KB [ 47.199102] ip_fib_alias 0KB 3KB [ 47.204478] ip_dst_cache 4KB 11KB [ 47.210704] RAW 5KB 7KB [ 47.216076] UDP 30KB 32KB [ 47.221445] request_sock_TCP 0KB 3KB [ 47.226814] TCP 10KB 15KB [ 47.232191] hugetlbfs_inode_cache 1KB 7KB [ 47.237901] eventpoll_pwq 9KB 11KB [ 47.243248] eventpoll_epi 18KB 19KB [ 47.248594] inotify_inode_mark 2KB 3KB [ 47.254351] request_queue 33KB 67KB [ 47.259699] blkdev_ioc 26KB 31KB [ 47.265078] bio-0 348KB 348KB [ 47.270457] biovec-(1<<(21-12)) 420KB 420KB [ 47.276035] biovec-128 159KB 159KB [ 47.281416] biovec-64 181KB 181KB [ 47.286796] biovec-16 22KB 22KB [ 47.292153] khugepaged_mm_slot 0KB 3KB [ 47.297594] uid_cache 2KB 3KB [ 47.302947] dmaengine-unmap-2 0KB 3KB [ 47.308299] skbuff_fclone_cache 126KB 127KB [ 47.313817] skbuff_head_cache 1746KB 1747KB [ 47.319184] configfs_dir_cache 0KB 4KB [ 47.324631] file_lock_cache 149KB 154KB [ 47.329979] file_lock_ctx 1KB 3KB [ 47.335327] fsnotify_mark_connector 1KB 3KB [ 47.341648] shmem_inode_cache 768KB 769KB [ 47.347048] task_delay_info 282KB 415KB [ 47.352430] sigqueue 308KB 330KB [ 47.357807] kernfs_node_cache 1699KB 1704KB [ 47.363181] mnt_cache 14KB 20KB [ 47.368555] filp 8137KB 8167KB [ 47.373930] names_cache 111520KB 111558KB [ 47.379311] avc_node 2KB 3KB [ 47.384706] selinux_file_security 408KB 410KB [ 47.390428] selinux_inode_security 1548KB 1548KB [ 47.396242] key_jar 2KB 7KB [ 47.401620] nsproxy 0KB 3KB [ 47.406996] vm_area_struct 17380KB 17410KB [ 47.412360] mm_struct 3591KB 3678KB [ 47.417724] fs_cache 381KB 516KB [ 47.423086] files_cache 1401KB 1623KB [ 47.428476] signal_cache 2254KB 2695KB [ 47.433841] sighand_cache 210KB 235KB [ 47.439205] task_struct 9132KB 9186KB [ 47.444560] cred_jar 2199KB 2480KB [ 47.449933] anon_vma_chain 7302KB 7382KB [ 47.455309] anon_vma 149KB 265KB [ 47.460702] pid 195KB 304KB [ 47.466079] Acpi-Operand 105KB 166KB [ 47.471473] Acpi-Namespace 18KB 19KB [ 47.477679] numa_policy 0KB 3KB [ 47.483080] trace_event_file 139KB 139KB [ 47.488452] ftrace_event_field 245KB 248KB [ 47.493935] pool_workqueue 9KB 12KB [ 47.499317] page->ptl 2801KB 2897KB [ 47.504692] kmalloc-262144 1032KB 1032KB [ 47.510060] kmalloc-131072 650KB 650KB [ 47.515416] kmalloc-65536 264KB 264KB [ 47.520785] kmalloc-32768 462KB 462KB [ 47.526147] kmalloc-16384 132KB 132KB [ 47.531522] kmalloc-8192 346KB 346KB [ 47.536896] kmalloc-4096 13706KB 13744KB [ 47.542283] kmalloc-2048 2771KB 2773KB [ 47.547647] kmalloc-1024 4386KB 4386KB [ 47.553036] kmalloc-512 3360KB 3367KB [ 47.558398] kmalloc-256 1282KB 1466KB [ 47.563762] kmalloc-128 321KB 452KB [ 47.569137] kmalloc-96 376KB 376KB [ 47.574536] kmalloc-64 348KB 416KB [ 47.579898] kmalloc-32 985KB 1397KB [ 47.585325] kmalloc-192 145KB 192KB [ 47.590703] kmem_cache 90KB 93KB [ 47.596075] [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name [ 47.604694] [ 1517] 0 1517 5340 118 90112 0 -1000 udevd [ 47.612906] [ 1624] 0 1624 5315 120 86016 0 -1000 udevd [ 47.621057] [ 1625] 0 1625 5325 121 86016 0 -1000 udevd [ 47.629205] [ 2741] 0 2741 2493 572 57344 0 0 dhclient [ 47.637621] [ 2873] 0 2873 30649 157 122880 0 0 rsyslogd [ 47.646042] [ 2908] 0 2908 4725 49 81920 0 0 cron [ 47.654112] [ 2934] 0 2934 12490 152 139264 0 -1000 sshd [ 47.662175] [ 2958] 0 2958 3694 39 77824 0 0 getty [ 47.670330] [ 2959] 0 2959 3694 39 77824 0 0 getty [ 47.678481] [ 2960] 0 2960 3694 42 73728 0 0 getty [ 47.686631] [ 2961] 0 2961 3694 41 73728 0 0 getty [ 47.694776] [ 2962] 0 2962 3694 40 69632 0 0 getty [ 47.702927] [ 2963] 0 2963 3694 41 73728 0 0 getty [ 47.711085] [ 2964] 0 2964 3649 41 73728 0 0 getty [ 47.719244] [ 2985] 0 2985 17821 197 180224 0 0 sshd [ 47.727302] [ 2987] 0 2987 4383 513 40960 0 0 syzkaller089610 [ 47.736312] Out of memory: Kill process 2741 (dhclient) score 0 or sacrifice child [ 47.744593] Killed process 2741 (dhclient) total-vm:9972kB, anon-rss:2288kB, file-rss:0kB, shmem-rss:0kB [ 47.761873] syzkaller089610 invoked oom-killer: gfp_mask=0x14000c0(GFP_KERNEL), nodemask=(null), order=0, oom_score_adj=0 [ 47.773588] syzkaller089610 cpuset=/ mems_allowed=0 [ 47.778759] CPU: 0 PID: 2987 Comm: syzkaller089610 Not tainted 4.14.0-rc5-next-20171018+ #36 [ 47.787316] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.796646] Call Trace: [ 47.799219] dump_stack+0x194/0x257 [ 47.802832] ? arch_local_irq_restore+0x53/0x53 [ 47.807489] ? dump_header+0x1d9/0xe0e [ 47.811364] dump_header+0x28e/0xe0e [ 47.815079] ? pagefault_out_of_memory+0x152/0x152 [ 47.819984] ? check_noncircular+0x20/0x20 [ 47.824199] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 47.829389] ? print_irqtrace_events+0x270/0x270 [ 47.834125] ? __lock_acquire+0x6aa/0x3d50 [ 47.838348] ? find_held_lock+0x35/0x1d0 [ 47.842403] ? check_noncircular+0x20/0x20 [ 47.846618] ? task_will_free_mem+0x252/0xaa0 [ 47.851101] ? find_held_lock+0x35/0x1d0 [ 47.855156] ? ___ratelimit+0x30d/0x630 [ 47.859112] ? lock_downgrade+0x990/0x990 [ 47.863251] ? do_raw_spin_trylock+0x190/0x190 [ 47.867819] ? mark_held_locks+0xaf/0x100 [ 47.871945] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 47.877028] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 47.882028] ? trace_hardirqs_on+0xd/0x10 [ 47.886168] ? ___ratelimit+0x95/0x630 [ 47.890050] ? idr_get_free_cmn+0xfd0/0xfd0 [ 47.894355] ? check_noncircular+0x20/0x20 [ 47.898569] ? find_held_lock+0x138/0x1d0 [ 47.902712] oom_kill_process+0x86d/0x13c0 [ 47.906933] ? has_ns_capability_noaudit+0x163/0x2a0 [ 47.912017] ? lock_downgrade+0x990/0x990 [ 47.916146] ? oom_evaluate_task+0x480/0x480 [ 47.920549] ? security_capable_noaudit+0x8b/0xc0 [ 47.925371] ? has_ns_capability_noaudit+0x18c/0x2a0 [ 47.930453] ? has_capability+0x30/0x30 [ 47.934404] ? check_noncircular+0x20/0x20 [ 47.938625] ? has_capability_noaudit+0x24/0x30 [ 47.943270] ? oom_badness+0xd1/0x980 [ 47.947043] ? lock_release+0xa40/0xa40 [ 47.950998] ? do_try_to_free_pages+0xc53/0x1020 [ 47.955733] ? find_lock_task_mm+0x460/0x460 [ 47.960127] ? find_held_lock+0x35/0x1d0 [ 47.964171] ? out_of_memory+0xaa9/0x11d0 [ 47.968294] ? lock_downgrade+0x990/0x990 [ 47.972428] ? lock_release+0xa40/0xa40 [ 47.976374] ? lock_acquire+0x1d5/0x580 [ 47.980324] ? __alloc_pages_slowpath+0x1001/0x2db0 [ 47.985321] ? oom_evaluate_task+0x284/0x480 [ 47.989716] out_of_memory+0x7dc/0x11d0 [ 47.993676] ? oom_killer_disable+0x310/0x310 [ 47.998142] ? mutex_trylock+0x23a/0x2d0 [ 48.002190] ? __lock_is_held+0xb6/0x140 [ 48.006228] ? __ww_mutex_wakeup_for_backoff+0x240/0x240 [ 48.011675] __alloc_pages_slowpath+0x1d9d/0x2db0 [ 48.016552] ? warn_alloc+0x2f0/0x2f0 [ 48.020338] ? lock_downgrade+0x990/0x990 [ 48.024462] ? load_balance+0x33b0/0x33b0 [ 48.028586] ? do_raw_spin_trylock+0x190/0x190 [ 48.033148] ? mark_held_locks+0xaf/0x100 [ 48.037273] ? _raw_spin_unlock_irq+0x27/0x70 [ 48.041746] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 48.046739] ? trace_hardirqs_on+0xd/0x10 [ 48.050865] ? mark_held_locks+0xaf/0x100 [ 48.054986] ? check_noncircular+0x20/0x20 [ 48.059196] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 48.064216] ? retint_kernel+0x10/0x10 [ 48.068114] ? __lock_is_held+0xb6/0x140 [ 48.072166] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 48.078042] ? __might_sleep+0x95/0x190 [ 48.081995] __alloc_pages_nodemask+0x9fb/0xd80 [ 48.086643] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 48.091638] ? mark_held_locks+0xaf/0x100 [ 48.095765] ? mark_held_locks+0xaf/0x100 [ 48.099878] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 48.104863] ? retint_kernel+0x10/0x10 [ 48.108721] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 48.113710] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 48.118475] alloc_pages_current+0xb6/0x1e0 [ 48.122778] relay_open_buf.part.10+0x22e/0x9b0 [ 48.127441] relay_open+0x57a/0xa40 [ 48.131059] ? relay_open_buf.part.10+0x9b0/0x9b0 [ 48.135883] ? __debugfs_create_file+0x2cc/0x3e0 [ 48.140627] ? debugfs_create_file+0x57/0x70 [ 48.145027] do_blk_trace_setup+0x4a4/0xcf0 [ 48.149340] ? blk_tracer_print_line+0x40/0x40 [ 48.153899] ? __might_sleep+0x95/0x190 [ 48.157848] ? kasan_check_write+0x14/0x20 [ 48.162060] ? _copy_from_user+0x99/0x110 [ 48.166186] blk_trace_setup+0xbd/0x180 [ 48.170137] ? do_blk_trace_setup+0xcf0/0xcf0 [ 48.174620] ? avc_has_extended_perms+0x6e5/0x12c0 [ 48.179531] sg_ioctl+0xc71/0x2d90 [ 48.183055] ? lock_release+0xa40/0xa40 [ 48.187004] ? __handle_mm_fault+0x587/0x39c0 [ 48.191491] ? sg_new_write.isra.20+0x830/0x830 [ 48.196140] ? is_bpf_text_address+0xa4/0x120 [ 48.200620] ? avc_has_extended_perms+0x7fa/0x12c0 [ 48.205535] ? avc_ss_reset+0x110/0x110 [ 48.209482] ? find_held_lock+0x35/0x1d0 [ 48.213544] ? __do_page_fault+0x64c/0xd60 [ 48.217754] ? lock_downgrade+0x990/0x990 [ 48.221895] ? handle_mm_fault+0x410/0x8d0 [ 48.226120] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 48.231970] ? up_read+0x1a/0x40 [ 48.235308] ? rcu_note_context_switch+0x710/0x710 [ 48.240226] ? sg_new_write.isra.20+0x830/0x830 [ 48.244869] do_vfs_ioctl+0x1b1/0x1520 [ 48.248729] ? _cond_resched+0x14/0x30 [ 48.252595] ? ioctl_preallocate+0x2b0/0x2b0 [ 48.256978] ? selinux_capable+0x40/0x40 [ 48.261022] ? putname+0xf3/0x130 [ 48.264460] ? do_sys_open+0x320/0x6d0 [ 48.268334] ? security_file_ioctl+0x89/0xb0 [ 48.272723] SyS_ioctl+0x8f/0xc0 [ 48.276081] entry_SYSCALL_64_fastpath+0x1f/0xbe [ 48.280811] RIP: 0033:0x443ec9 [ 48.283970] RSP: 002b:00007ffd6ac2f488 EFLAGS: 00000202 ORIG_RAX: 0000000000000010 [ 48.291644] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000443ec9 [ 48.298881] RDX: 000000002084cf90 RSI: 00000000c0481273 RDI: 0000000000000003 [ 48.306122] RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 [ 48.313365] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000401bb0 [ 48.320605] R13: 0000000000401c40 R14: 0000000000000000 R15: 0000000000000000 [ 48.327931] Mem-Info: [ 48.330724] active_anon:1705 inactive_anon:32 isolated_anon:0 [ 48.330724] active_file:20 inactive_file:17 isolated_file:0 [ 48.330724] unevictable:0 dirty:4 writeback:0 unstable:0 [ 48.330724] slab_reclaimable:5977 slab_unreclaimable:82727 [ 48.330724] mapped:9 shmem:39 pagetables:269 bounce:0 [ 48.330724] free:24131 free_pcp:352 free_cma:0 [ 48.363413] Node 0 active_anon:6820kB inactive_anon:128kB active_file:80kB inactive_file:68kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:36kB dirty:16kB writeback:0kB shmem:156kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 2048kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no [ 48.392591] 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 [ 48.420278] lowmem_reserve[]: 0 2886 6400 6400 [ 48.424957] Node 0 DMA32 free:44176kB 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 [ 48.452143] lowmem_reserve[]: 0 0 3513 3513 [ 48.456483] Node 0 Normal free:37308kB min:37008kB low:46260kB high:55512kB active_anon:7004kB inactive_anon:128kB active_file:88kB inactive_file:0kB unevictable:0kB writepending:16kB present:4718592kB managed:3597488kB mlocked:0kB kernel_stack:2656kB pagetables:1076kB bounce:0kB free_pcp:748kB local_pcp:40kB free_cma:0kB [ 48.485117] lowmem_reserve[]: 0 0 0 0 [ 48.488968] 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 [ 48.502650] Node 0 DMA32: 2*4kB (M) 1*8kB (M) 4*16kB (M) 4*32kB (UM) 3*64kB (M) 2*128kB (M) 2*256kB (M) 2*512kB (M) 1*1024kB (M) 4*2048kB (UM) 8*4096kB (M) = 44176kB [ 48.517679] Node 0 Normal: 148*4kB (UM) 313*8kB (ME) 211*16kB (UME) 158*32kB (UME) 94*64kB (UME) 32*128kB (M) 12*256kB (UM) 5*512kB (UME) 3*1024kB (UM) 3*2048kB (M) 0*4096kB = 36488kB [ 48.534653] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB [ 48.543221] 232 total pagecache pages [ 48.547041] 0 pages in swap cache [ 48.550481] Swap cache stats: add 0, delete 0, find 0/0 [ 48.555822] Free swap = 0kB [ 48.558818] Total swap = 0kB [ 48.561825] 1965979 pages RAM [ 48.564910] 0 pages HighMem/MovableOnly [ 48.568865] 323018 pages reserved [ 48.572305] Unreclaimable slab info: [ 48.575998] Name Used Total [ 48.581521] TIPC 1KB 7KB [ 48.586872] SCTPv6 2KB 4KB [ 48.592223] DCCPv6 2KB 7KB [ 48.597571] DCCP 2KB 6KB [ 48.602928] fib6_nodes 0KB 4KB [ 48.608282] ip6_dst_cache 6KB 7KB [ 48.613652] RAWv6 9KB 19KB [ 48.619030] UDPv6 12KB 14KB [ 48.624405] TCPv6 2KB 5KB [ 48.629790] sd_ext_cdb 0KB 3KB [ 48.635168] scsi_sense_cache 200KB 200KB [ 48.640718] virtio_scsi_cmd 16KB 16KB [ 48.646080] sgpool-128 8KB 8KB [ 48.651427] sgpool-64 4KB 6KB [ 48.657124] sgpool-32 441KB 441KB [ 48.662474] sgpool-16 105KB 105KB [ 48.668085] sgpool-8 333KB 333KB [ 48.673506] cfq_io_cq 19KB 19KB [ 48.678855] cfq_queue 26KB 34KB [ 48.684201] mqueue_inode_cache 1KB 7KB [ 48.689630] nfs_commit_data 3KB 7KB [ 48.694973] nfs_write_data 34KB 37KB [ 48.700318] jbd2_inode 1KB 3KB [ 48.705666] ext4_system_zone 0KB 3KB [ 48.711022] bio-1 1KB 3KB [ 48.716370] rpc_buffers 17KB 19KB [ 48.721713] rpc_tasks 2KB 3KB [ 48.727055] UNIX 433KB 435KB [ 48.732404] tcp_bind_bucket 0KB 4KB [ 48.737797] ip_fib_trie 0KB 3KB [ 48.743141] ip_fib_alias 0KB 3KB [ 48.749501] ip_dst_cache 4KB 11KB [ 48.754904] RAW 5KB 7KB [ 48.760332] UDP 30KB 32KB [ 48.765722] request_sock_TCP 0KB 3KB [ 48.771300] TCP 10KB 15KB [ 48.776858] hugetlbfs_inode_cache 1KB 7KB [ 48.782714] eventpoll_pwq 9KB 11KB [ 48.788142] eventpoll_epi 18KB 19KB [ 48.793495] inotify_inode_mark 2KB 3KB [ 48.798927] request_queue 33KB 67KB [ 48.804314] blkdev_ioc 26KB 31KB [ 48.809662] bio-0 484KB 484KB [ 48.815138] biovec-(1<<(21-12)) 486KB 486KB [ 48.820788] biovec-128 350KB 350KB [ 48.826282] biovec-64 409KB 409KB [ 48.831785] biovec-16 45KB 45KB [ 48.837363] khugepaged_mm_slot 0KB 3KB [ 48.842957] uid_cache 1KB 3KB [ 48.848472] dmaengine-unmap-2 0KB 3KB [ 48.854095] skbuff_fclone_cache 125KB 127KB [ 48.859945] skbuff_head_cache 1745KB 1747KB [ 48.865313] configfs_dir_cache 0KB 4KB [ 48.870849] file_lock_cache 149KB 154KB [ 48.876386] file_lock_ctx 1KB 3KB [ 48.881882] fsnotify_mark_connector 1KB 3KB [ 48.887838] shmem_inode_cache 768KB 769KB [ 48.893489] task_delay_info 280KB 415KB [ 48.898966] sigqueue 308KB 330KB [ 48.904499] kernfs_node_cache 1699KB 1704KB [ 48.909958] mnt_cache 14KB 20KB [ 48.915490] filp 8130KB 8167KB [ 48.921076] names_cache 110423KB 110461KB [ 48.926606] avc_node 2KB 3KB [ 48.932147] selinux_file_security 407KB 410KB [ 48.938094] selinux_inode_security 1545KB 1548KB [ 48.944150] key_jar 2KB 7KB [ 48.949703] nsproxy 0KB 3KB [ 48.955196] vm_area_struct 17377KB 17410KB [ 48.960658] mm_struct 3584KB 3671KB [ 48.966232] fs_cache 378KB 516KB [ 48.971789] files_cache 1391KB 1612KB [ 48.977346] signal_cache 2246KB 2688KB [ 48.982914] sighand_cache 198KB 235KB [ 48.988385] task_struct 9120KB 9174KB [ 48.993891] cred_jar 2193KB 2480KB [ 48.999534] anon_vma_chain 7299KB 7382KB [ 49.005116] anon_vma 144KB 265KB [ 49.010646] pid 194KB 304KB [ 49.016184] Acpi-Operand 105KB 166KB [ 49.021737] Acpi-Namespace 18KB 19KB [ 49.027283] numa_policy 0KB 3KB [ 49.032946] trace_event_file 139KB 139KB [ 49.038538] ftrace_event_field 245KB 248KB [ 49.044210] pool_workqueue 9KB 12KB [ 49.049736] page->ptl 2799KB 2897KB [ 49.055306] kmalloc-262144 1032KB 1032KB [ 49.060801] kmalloc-131072 650KB 650KB [ 49.066346] kmalloc-65536 264KB 264KB [ 49.071944] kmalloc-32768 462KB 462KB [ 49.077454] kmalloc-16384 132KB 132KB [ 49.082958] kmalloc-8192 346KB 346KB [ 49.088426] kmalloc-4096 13323KB 13362KB [ 49.094133] kmalloc-2048 2768KB 2773KB [ 49.099681] kmalloc-1024 4803KB 4803KB [ 49.105234] kmalloc-512 3353KB 3367KB [ 49.110761] kmalloc-256 1279KB 1462KB [ 49.116311] kmalloc-128 318KB 452KB [ 49.121821] kmalloc-96 384KB 384KB [ 49.127370] kmalloc-64 347KB 416KB [ 49.132873] kmalloc-32 983KB 1397KB [ 49.138418] kmalloc-192 145KB 192KB [ 49.143972] kmem_cache 90KB 93KB [ 49.149436] [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name [ 49.158206] [ 1517] 0 1517 5340 118 90112 0 -1000 udevd [ 49.166544] [ 1624] 0 1624 5315 120 86016 0 -1000 udevd [ 49.174718] [ 1625] 0 1625 5325 121 86016 0 -1000 udevd [ 49.182855] [ 2873] 0 2873 30649 158 122880 0 0 rsyslogd [ 49.191257] [ 2908] 0 2908 4725 49 81920 0 0 cron [ 49.199306] [ 2934] 0 2934 12490 152 139264 0 -1000 sshd [ 49.207351] [ 2958] 0 2958 3694 39 77824 0 0 getty [ 49.215486] [ 2959] 0 2959 3694 39 77824 0 0 getty [ 49.223620] [ 2960] 0 2960 3694 42 73728 0 0 getty [ 49.231755] [ 2961] 0 2961 3694 41 73728 0 0 getty [ 49.239901] [ 2962] 0 2962 3694 40 69632 0 0 getty [ 49.248033] [ 2963] 0 2963 3694 41 73728 0 0 getty [ 49.256170] [ 2964] 0 2964 3649 41 73728 0 0 getty [ 49.264314] [ 2985] 0 2985 17821 197 180224 0 0 sshd [ 49.272371] [ 2987] 0 2987 4383 513 40960 0 0 syzkaller089610 [ 49.281388] Out of memory: Kill process 2987 (syzkaller089610) score 0 or sacrifice child [ 49.289749] Killed process 2987 (syzkaller089610) total-vm:17532kB, anon-rss:2052kB, file-rss:0kB, shmem-rss:0kB [ 49.300693] oom_reaper: reaped process 2987 (syzkaller089610), now anon-rss:0kB, file-rss:0kB, shmem-rss:0kB [ 49.313598] rsyslogd invoked oom-killer: gfp_mask=0x14201ca(GFP_HIGHUSER_MOVABLE|__GFP_COLD), nodemask=(null), order=0, oom_score_adj=0 [ 49.326115] rsyslogd cpuset=/ mems_allowed=0 [ 49.330666] CPU: 1 PID: 2876 Comm: rsyslogd Not tainted 4.14.0-rc5-next-20171018+ #36 [ 49.338610] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.347944] Call Trace: [ 49.350516] dump_stack+0x194/0x257 [ 49.354131] ? arch_local_irq_restore+0x53/0x53 [ 49.358788] ? dump_header+0x1d9/0xe0e [ 49.361194] syzkaller089610: page allocation failure: order:0, mode:0x14000c0(GFP_KERNEL), nodemask=(null) [ 49.361220] syzkaller089610 cpuset=/ mems_allowed=0 [ 49.377399] dump_header+0x28e/0xe0e [ 49.381106] ? pagefault_out_of_memory+0x152/0x152 [ 49.386011] ? check_noncircular+0x20/0x20 [ 49.390247] ? print_irqtrace_events+0x270/0x270 [ 49.394974] ? __lock_acquire+0x6aa/0x3d50 [ 49.399192] ? find_held_lock+0x35/0x1d0 [ 49.403240] ? check_noncircular+0x20/0x20 [ 49.407449] ? task_will_free_mem+0x252/0xaa0 [ 49.411933] ? find_held_lock+0x35/0x1d0 [ 49.415983] ? ___ratelimit+0x30d/0x630 [ 49.419944] ? lock_downgrade+0x990/0x990 [ 49.424078] ? do_raw_spin_trylock+0x190/0x190 [ 49.428643] ? mark_held_locks+0xaf/0x100 [ 49.432770] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 49.437851] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 49.442842] ? trace_hardirqs_on+0xd/0x10 [ 49.446971] ? ___ratelimit+0x95/0x630 [ 49.450836] ? idr_get_free_cmn+0xfd0/0xfd0 [ 49.455133] ? check_noncircular+0x20/0x20 [ 49.459341] ? find_held_lock+0x138/0x1d0 [ 49.463479] oom_kill_process+0x86d/0x13c0 [ 49.467697] ? has_ns_capability_noaudit+0x163/0x2a0 [ 49.472779] ? check_noncircular+0x20/0x20 [ 49.476997] ? oom_evaluate_task+0x480/0x480 [ 49.481400] ? security_capable_noaudit+0x8b/0xc0 [ 49.486228] ? find_held_lock+0x35/0x1d0 [ 49.490268] ? check_noncircular+0x20/0x20 [ 49.494482] ? oom_unkillable_task+0x394/0x4c0 [ 49.499040] ? lock_downgrade+0x990/0x990 [ 49.503167] ? lock_release+0xa40/0xa40 [ 49.507123] ? find_lock_task_mm+0x460/0x460 [ 49.511514] ? find_held_lock+0x35/0x1d0 [ 49.515563] ? out_of_memory+0xaa9/0x11d0 [ 49.519687] ? lock_downgrade+0x990/0x990 [ 49.523816] ? lock_release+0xa40/0xa40 [ 49.527761] ? lock_acquire+0x1d5/0x580 [ 49.531711] ? __alloc_pages_slowpath+0x1001/0x2db0 [ 49.536713] ? oom_evaluate_task+0x284/0x480 [ 49.541103] out_of_memory+0x7dc/0x11d0 [ 49.545050] ? find_next_bit+0x27/0x30 [ 49.548923] ? oom_killer_disable+0x310/0x310 [ 49.553391] ? mutex_trylock+0x23a/0x2d0 [ 49.557429] ? __lock_is_held+0xb6/0x140 [ 49.561465] ? __ww_mutex_wakeup_for_backoff+0x240/0x240 [ 49.566910] __alloc_pages_slowpath+0x1d9d/0x2db0 [ 49.571740] ? __radix_tree_insert+0x7b0/0x7b0 [ 49.576327] ? warn_alloc+0x2f0/0x2f0 [ 49.580111] ? find_get_entry+0x513/0x9e0 [ 49.584236] ? lock_downgrade+0x990/0x990 [ 49.588373] ? __lock_is_held+0xb6/0x140 [ 49.592428] ? find_get_entry+0x53c/0x9e0 [ 49.596557] ? check_noncircular+0x20/0x20 [ 49.600775] ? __lock_acquire+0x6aa/0x3d50 [ 49.605210] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 49.610377] ? find_held_lock+0x35/0x1d0 [ 49.614414] ? __radix_tree_lookup+0x435/0x5e0 [ 49.618995] ? __lock_is_held+0xb6/0x140 [ 49.623058] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 49.628934] ? __might_sleep+0x95/0x190 [ 49.632892] __alloc_pages_nodemask+0x9fb/0xd80 [ 49.637547] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 49.642541] ? add_to_page_cache_lru+0x510/0x510 [ 49.647284] ? check_noncircular+0x20/0x20 [ 49.651492] ? check_noncircular+0x20/0x20 [ 49.655707] ? __lock_acquire+0x6aa/0x3d50 [ 49.659919] ? radix_tree_next_chunk+0x5e8/0xdf0 [ 49.664677] alloc_pages_current+0xb6/0x1e0 [ 49.668980] __page_cache_alloc+0x334/0x500 [ 49.673277] ? rcu_read_lock_held+0xa9/0xc0 [ 49.677577] ? trace_event_raw_event_file_check_and_advance_wb_err+0x490/0x490 [ 49.684931] filemap_fault+0xf32/0x1d30 [ 49.688900] ? __lock_page_or_retry+0x4f0/0x4f0 [ 49.693557] ? filemap_map_pages+0x942/0x15d0 [ 49.698051] ? find_get_entries_tag+0xeb0/0xeb0 [ 49.702694] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 49.707776] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 49.712771] ? check_noncircular+0x20/0x20 [ 49.716980] ? __lock_acquire+0x6aa/0x3d50 [ 49.721189] ? __lock_acquire+0x6aa/0x3d50 [ 49.725398] ? check_noncircular+0x20/0x20 [ 49.729609] ? check_noncircular+0x20/0x20 [ 49.733834] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 49.739005] ? lock_acquire+0x1d5/0x580 [ 49.742954] ? lock_acquire+0x1d5/0x580 [ 49.746907] ? ext4_filemap_fault+0x7a/0xad [ 49.751215] ? lock_release+0xa40/0xa40 [ 49.755166] ? trace_event_raw_event_sched_switch+0x8a0/0x8a0 [ 49.761027] ? ext4_filemap_fault+0x8d/0xad [ 49.765330] ? rcu_note_context_switch+0x710/0x710 [ 49.770233] ? lock_downgrade+0x990/0x990 [ 49.774363] ? __might_sleep+0x95/0x190 [ 49.778323] ? down_read+0x96/0x150 [ 49.781922] ? ext4_filemap_fault+0x7a/0xad [ 49.786221] ? __down_interruptible+0x6b0/0x6b0 [ 49.790883] ext4_filemap_fault+0x82/0xad [ 49.795012] __do_fault+0xeb/0x30f [ 49.798528] ? do_raw_spin_trylock+0x190/0x190 [ 49.803084] ? pte_offset_kernel+0xc7/0xc7 [ 49.807292] ? _raw_spin_unlock_irq+0x27/0x70 [ 49.811771] ? trace_hardirqs_on+0xd/0x10 [ 49.815893] ? check_noncircular+0x20/0x20 [ 49.820111] __handle_mm_fault+0x1b9b/0x39c0 [ 49.824506] ? __pmd_alloc+0x4e0/0x4e0 [ 49.828383] ? find_held_lock+0x35/0x1d0 [ 49.832431] ? handle_mm_fault+0x248/0x8d0 [ 49.836644] ? lock_downgrade+0x990/0x990 [ 49.840808] handle_mm_fault+0x334/0x8d0 [ 49.844840] ? down_read_trylock+0xdb/0x170 [ 49.849136] ? __do_page_fault+0x31e/0xd60 [ 49.853349] ? __handle_mm_fault+0x39c0/0x39c0 [ 49.857902] ? vmacache_find+0x5f/0x280 [ 49.861858] ? find_vma+0x30/0x150 [ 49.865381] __do_page_fault+0x5bd/0xd60 [ 49.869431] ? mm_fault_error+0x2c0/0x2c0 [ 49.873563] ? trace_hardirqs_off+0xd/0x10 [ 49.877778] do_page_fault+0xee/0x720 [ 49.881558] ? __do_page_fault+0xd60/0xd60 [ 49.885783] ? syscall_return_slowpath+0x2b3/0x510 [ 49.890691] ? prepare_exit_to_usermode+0x2d0/0x2d0 [ 49.895682] ? SyS_read+0x184/0x220 [ 49.899285] ? retint_user+0x18/0x20 [ 49.902983] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 49.907812] page_fault+0x22/0x30 Connection to ci-upstream-next-kasan-gce-0 closed by remote host. [ 49.911238] RIP: 0033:0x41cbab [ 49.914402] RSP: 002b:00007eff27139d50 EFLAGS: 00010246 [ 49.919740] RAX: 0000000000000000 RBX: 00007eff20000be0 RCX: 0000000000000009 [ 49.926985] RDX: 0000000000000036 RSI: 00007eff2896f5a3 RDI: 0000000000000000 [ 49.934227] RBP: 00007eff20000d08 R08: 00007eff2896f5a3 R09: 00000000000007e1 [ 49.941470] R10: 0000000000000010 R11: a3d70a3d70a3d70b R12: 0000000000000000 [ 49.948713] R13: 0000000000000036 R14: 00007eff2896f5a3 R15: 00007eff2896e65b [ 49.955992] CPU: 0 PID: 2987 Comm: syzkaller089610 Not tainted 4.14.0-rc5-ne