[  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