[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.117' (ECDSA) to the list of known hosts. syzkaller login: [ 447.085039] syz-executor046 invoked oom-killer: gfp_mask=0x6040c0(GFP_KERNEL|__GFP_COMP), nodemask=(null), order=0, oom_score_adj=1000 [ 448.032294] syz-executor046 cpuset=/ mems_allowed=0-1 [ 448.037764] CPU: 1 PID: 9524 Comm: syz-executor046 Not tainted 4.19.211-syzkaller #0 [ 448.045644] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 448.055009] Call Trace: [ 448.057612] dump_stack+0x1fc/0x2ef [ 448.061247] dump_header+0x15d/0xc3f [ 448.065401] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 448.070500] ? ___ratelimit+0x319/0x590 [ 448.074477] oom_kill_process.cold+0x10/0x692 [ 448.078972] ? lock_downgrade+0x720/0x720 [ 448.083128] ? check_preemption_disabled+0x41/0x280 [ 448.088148] out_of_memory+0x34d/0x1390 [ 448.092132] ? oom_killer_disable+0x270/0x270 [ 448.096630] ? mutex_trylock+0x15f/0x1a0 [ 448.100690] __alloc_pages_nodemask+0x23a2/0x2890 [ 448.105547] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 448.110387] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 448.115231] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 448.120343] ? mark_held_locks+0xa6/0xf0 [ 448.124401] ? ____cache_alloc_node+0x156/0x1d0 [ 448.129066] ? cache_grow_begin+0x64/0x8a0 [ 448.133304] cache_grow_begin+0xa4/0x8a0 [ 448.137367] fallback_alloc+0x213/0x2e0 [ 448.141344] kmem_cache_alloc+0x1e4/0x370 [ 448.145495] anon_vma_clone+0x32d/0x5e0 [ 448.149472] anon_vma_fork+0x82/0x630 [ 448.153272] ? dup_userfaultfd+0x157/0x670 [ 448.157509] ? kmem_cache_alloc+0x315/0x370 [ 448.161924] copy_process.part.0+0x360f/0x8260 [ 448.166529] ? __cleanup_sighand+0x60/0x60 [ 448.170769] ? __do_page_fault+0x6d1/0xd60 [ 448.175005] _do_fork+0x22f/0xf30 [ 448.178462] ? fork_idle+0x220/0x220 [ 448.182170] ? up_read+0x17/0x110 [ 448.185623] ? __do_page_fault+0x180/0xd60 [ 448.189860] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 448.195225] ? trace_hardirqs_off_caller+0x6e/0x210 [ 448.200240] ? do_syscall_64+0x21/0x620 [ 448.204213] do_syscall_64+0xf9/0x620 [ 448.208014] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 448.213200] RIP: 0033:0x7f13005389b9 [ 448.216910] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 [ 448.235892] RSP: 002b:00007f13004ea1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 448.243595] RAX: ffffffffffffffda RBX: 00007f13005c03e8 RCX: 00007f13005389b9 [ 448.250856] RDX: 0000000000000000 RSI: 00000000200012c0 RDI: 0000000000020400 [ 448.258118] RBP: 00007f13005c03e0 R08: 0000000000000000 R09: 0000000e00000000 [ 448.265383] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13005c03ec [ 448.272643] R13: 00007ffcc678538f R14: 00007f13004ea300 R15: 0000000000022000 [ 449.420778] Mem-Info: [ 449.472090] active_anon:1348188 inactive_anon:4725 isolated_anon:0 [ 449.472090] active_file:335 inactive_file:330 isolated_file:98 [ 449.472090] unevictable:0 dirty:292 writeback:17 unstable:0 [ 449.472090] slab_reclaimable:16058 slab_unreclaimable:157820 [ 449.472090] mapped:1206 shmem:4898 pagetables:21152 bounce:0 [ 449.472090] free:28217 free_pcp:229 free_cma:0 [ 449.508911] Node 0 active_anon:1875732kB inactive_anon:18900kB active_file:1332kB inactive_file:1312kB unevictable:0kB isolated(anon):0kB isolated(file):392kB mapped:4824kB dirty:1168kB writeback:68kB shmem:19592kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 1832960kB writeback_tmp:0kB unstable:0kB all_unreclaimable? no [ 449.605525] Node 1 active_anon:3517020kB inactive_anon:0kB active_file:8kB inactive_file:8kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:0kB dirty:0kB writeback:0kB shmem:0kB shmem_thp: 0kB shmem_pmdmapped: 0kB anon_thp: 0kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes [ 449.643344] Node 0 DMA free:10964kB min:204kB low:252kB high:300kB active_anon:4116kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:15992kB managed:15908kB mlocked:0kB kernel_stack:256kB pagetables:72kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB [ 449.670266] lowmem_reserve[]: 0 2693 2695 2695 2695 [ 449.995551] Node 0 DMA32 free:43132kB min:35996kB low:44992kB high:53988kB active_anon:1873156kB inactive_anon:18900kB active_file:876kB inactive_file:1380kB unevictable:0kB writepending:1236kB present:3129332kB managed:2763452kB mlocked:0kB kernel_stack:65472kB pagetables:43172kB bounce:0kB free_pcp:1264kB local_pcp:768kB free_cma:0kB [ 453.508317] lowmem_reserve[]: 0 0 1 1 1 [ 453.546487] Node 0 Normal free:8kB min:24kB low:28kB high:32kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB writepending:0kB present:1048576kB managed:2000kB mlocked:0kB kernel_stack:0kB pagetables:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB [ 453.970699] lowmem_reserve[]: 0 0 0 0 0 [ 453.978554] Node 1 Normal free:53596kB min:53876kB low:67344kB high:80812kB active_anon:3522420kB inactive_anon:0kB active_file:8kB inactive_file:8kB unevictable:0kB writepending:0kB present:4194304kB managed:4128248kB mlocked:0kB kernel_stack:139552kB pagetables:42868kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB [ 454.909153] lowmem_reserve[]: 0 0 0 0 0 [ 454.924666] Node 0 DMA: 1*4kB (M) 2*8kB (UM) 0*16kB 2*32kB (UM) 2*64kB (UM) 2*128kB (UM) 1*256kB (M) 2*512kB (UM) 1*1024kB (M) 0*2048kB 2*4096kB (M) = 10964kB [ 455.048145] Node 0 DMA32: 69*4kB (UME) 283*8kB (UMEH) 258*16kB (UMEH) 195*32kB (UMEH) 111*64kB (UMEH) 27*128kB (UMEH) 12*256kB (UME) 2*512kB (M) 2*1024kB (UM) 1*2048kB (M) 1*4096kB (M) = 35756kB [ 457.929503] Node 0 Normal: 0*4kB 1*8kB (U) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 8kB [ 457.980814] Node 1 Normal: 7*4kB (UME) 6*8kB (UME) 3*16kB (UME) 3*32kB (UM) 4*64kB (UME) 1*128kB (U) 1*256kB (M) 3*512kB (UME) 0*1024kB 1*2048kB (U) 12*4096kB (M) = 53596kB [ 459.045629] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB [ 460.934196] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB [ 462.638267] Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=1048576kB [ 462.840006] Node 1 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB [ 468.738086] 5370 total pagecache pages [ 471.483922] 0 pages in swap cache [ 471.487437] Swap cache stats: add 0, delete 0, find 0/0 [ 472.509101] Free swap = 0kB [ 473.069543] Total swap = 0kB [ 474.910239] 2097051 pages RAM [ 476.116933] 0 pages HighMem/MovableOnly [ 476.120931] 369649 pages reserved [ 479.109340] 0 pages cma reserved [ 481.194588] Tasks state (memory values in pages): [ 481.199464] [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name [ 484.650405] [ 4688] 0 4688 11524 692 122880 0 0 systemd-journal [ 485.519682] [ 4699] 0 4699 11107 452 110592 0 -1000 systemd-udevd [ 486.779206] [ 6165] 100 6165 30769 114 143360 0 0 systemd-timesyn [ 494.747910] [ 6174] 0 6174 5115 276 69632 0 0 dhclient [ 494.776971] [ 7823] 0 7823 6999 60 102400 0 0 cron [ 496.676959] [ 7824] 0 7824 63583 1705 147456 0 0 rsyslogd [ 497.594963] [ 7931] 0 7931 17490 192 176128 0 -1000 sshd [ 501.678550] [ 8050] 0 8050 3221 31 69632 0 0 agetty [ 502.107888] [ 8052] 0 8052 3221 33 69632 0 0 agetty [ 508.845074] [ 8053] 0 8053 3221 32 73728 0 0 agetty [ 509.015399] [ 8055] 0 8055 3221 33 65536 0 0 agetty [ 511.295537] [ 8056] 0 8056 3221 31 65536 0 0 agetty [ 519.626149] [ 8057] 0 8057 3221 33 61440 0 0 agetty [ 530.117663] [ 8058] 0 8058 3165 33 77824 0 0 agetty [ 539.208130] [ 8119] 0 8119 17490 201 180224 0 0 sshd [ 550.793051] [ 8121] 0 8121 4390 1 36864 0 0 syz-executor046 [ 564.356766] [ 8124] 0 8124 4423 527 49152 0 1000 syz-executor046 [ 575.229867] [ 8125] 0 8125 4423 527 49152 0 1000 syz-executor046 [ 587.040630] [ 8126] 0 8126 4423 527 49152 0 1000 syz-executor046 [ 599.275145] [ 8127] 0 8127 4423 527 49152 0 1000 syz-executor046 [ 607.655301] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 607.661820] rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P9524 [ 607.668773] rcu: (detected by 0, t=10503 jiffies, g=5025, q=2) [ 607.674845] syz-executor046 R running task 26800 9524 8347 0x80000000 [ 607.682048] Call Trace: [ 607.684647] __schedule+0x887/0x2040 [ 607.688367] ? io_schedule_timeout+0x140/0x140 [ 607.692937] ? dump_header+0xb92/0xc3f [ 607.696811] ? ___preempt_schedule+0x16/0x18 [ 607.701203] preempt_schedule_common+0x45/0xc0 [ 607.705770] ___preempt_schedule+0x16/0x18 [ 607.709990] _raw_spin_unlock+0x3b/0x40 [ 607.713947] dump_header+0xb92/0xc3f [ 607.717648] oom_kill_process.cold+0x10/0x692 [ 607.722126] ? lock_downgrade+0x720/0x720 [ 607.726263] ? check_preemption_disabled+0x41/0x280 [ 607.731278] out_of_memory+0x34d/0x1390 [ 607.735242] ? oom_killer_disable+0x270/0x270 [ 607.739866] ? mutex_trylock+0x15f/0x1a0 [ 607.743921] __alloc_pages_nodemask+0x23a2/0x2890 [ 607.748765] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 607.753607] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 607.758443] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 607.763536] ? mark_held_locks+0xa6/0xf0 [ 607.767583] ? ____cache_alloc_node+0x156/0x1d0 [ 607.772235] ? cache_grow_begin+0x64/0x8a0 [ 607.776453] cache_grow_begin+0xa4/0x8a0 [ 607.780512] fallback_alloc+0x213/0x2e0 [ 607.784472] kmem_cache_alloc+0x1e4/0x370 [ 607.788611] anon_vma_clone+0x32d/0x5e0 [ 607.792570] anon_vma_fork+0x82/0x630 [ 607.796354] ? dup_userfaultfd+0x157/0x670 [ 607.800642] ? kmem_cache_alloc+0x315/0x370 [ 607.805135] copy_process.part.0+0x360f/0x8260 [ 607.809713] ? __cleanup_sighand+0x60/0x60 [ 607.813938] ? __do_page_fault+0x6d1/0xd60 [ 607.818158] _do_fork+0x22f/0xf30 [ 607.821682] ? fork_idle+0x220/0x220 [ 607.825380] ? up_read+0x17/0x110 [ 607.828845] ? __do_page_fault+0x180/0xd60 [ 607.833067] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 607.838456] ? trace_hardirqs_off_caller+0x6e/0x210 [ 607.843457] ? do_syscall_64+0x21/0x620 [ 607.847419] do_syscall_64+0xf9/0x620 [ 607.851205] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 607.856386] RIP: 0033:0x7f13005389b9 [ 607.860092] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 [ 607.878977] RSP: 002b:00007f13004ea1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 607.886666] RAX: ffffffffffffffda RBX: 00007f13005c03e8 RCX: 00007f13005389b9 [ 607.893919] RDX: 0000000000000000 RSI: 00000000200012c0 RDI: 0000000000020400 [ 607.901170] RBP: 00007f13005c03e0 R08: 0000000000000000 R09: 0000000e00000000 [ 607.908425] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13005c03ec [ 607.915679] R13: 00007ffcc678538f R14: 00007f13004ea300 R15: 0000000000022000 [ 607.922951] syz-executor046 R running task 26800 9524 8347 0x80000000 [ 607.930139] Call Trace: [ 607.932730] __schedule+0x887/0x2040 [ 607.936438] ? io_schedule_timeout+0x140/0x140 [ 607.941014] ? dump_header+0xb92/0xc3f [ 607.944894] ? ___preempt_schedule+0x16/0x18 [ 607.949300] preempt_schedule_common+0x45/0xc0 [ 607.953871] ___preempt_schedule+0x16/0x18 [ 607.958100] _raw_spin_unlock+0x3b/0x40 [ 607.962061] dump_header+0xb92/0xc3f [ 607.965771] oom_kill_process.cold+0x10/0x692 [ 607.970260] ? lock_downgrade+0x720/0x720 [ 607.974399] ? check_preemption_disabled+0x41/0x280 [ 607.979411] out_of_memory+0x34d/0x1390 [ 607.983379] ? oom_killer_disable+0x270/0x270 [ 607.987866] ? mutex_trylock+0x15f/0x1a0 [ 607.991926] __alloc_pages_nodemask+0x23a2/0x2890 [ 607.996769] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 608.001600] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 608.006434] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 608.011534] ? mark_held_locks+0xa6/0xf0 [ 608.015584] ? ____cache_alloc_node+0x156/0x1d0 [ 608.020247] ? cache_grow_begin+0x64/0x8a0 [ 608.024475] cache_grow_begin+0xa4/0x8a0 [ 608.028531] fallback_alloc+0x213/0x2e0 [ 608.032499] kmem_cache_alloc+0x1e4/0x370 [ 608.036639] anon_vma_clone+0x32d/0x5e0 [ 608.040609] anon_vma_fork+0x82/0x630 [ 608.044401] ? dup_userfaultfd+0x157/0x670 [ 608.048626] ? kmem_cache_alloc+0x315/0x370 [ 608.052940] copy_process.part.0+0x360f/0x8260 [ 608.057525] ? __cleanup_sighand+0x60/0x60 [ 608.061756] ? __do_page_fault+0x6d1/0xd60 [ 608.065986] _do_fork+0x22f/0xf30 [ 608.069434] ? fork_idle+0x220/0x220 [ 608.073140] ? up_read+0x17/0x110 [ 608.076583] ? __do_page_fault+0x180/0xd60 [ 608.080811] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 608.086165] ? trace_hardirqs_off_caller+0x6e/0x210 [ 608.091171] ? do_syscall_64+0x21/0x620 [ 608.095136] do_syscall_64+0xf9/0x620 [ 608.098928] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 608.104107] RIP: 0033:0x7f13005389b9 [ 608.107812] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 [ 608.126702] RSP: 002b:00007f13004ea1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 608.134399] RAX: ffffffffffffffda RBX: 00007f13005c03e8 RCX: 00007f13005389b9 [ 608.141656] RDX: 0000000000000000 RSI: 00000000200012c0 RDI: 0000000000020400 [ 608.148916] RBP: 00007f13005c03e0 R08: 0000000000000000 R09: 0000000e00000000 [ 608.156170] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13005c03ec [ 608.163427] R13: 00007ffcc678538f R14: 00007f13004ea300 R15: 0000000000022000 [ 612.433246] [ 8128] 0 8128 4423 527 49152 0 1000 syz-executor046