Warning: Permanently added '10.128.1.52' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   31.869788] audit: type=1400 audit(1600613482.534:8): avc:  denied  { execmem } for  pid=6357 comm="syz-executor477" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
[   31.880747] F2FS-fs (loop0): Magic Mismatch, valid(0xf2f52010) - read(0x0)
[   31.898734] F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock
[   31.907883] F2FS-fs (loop0): invalid crc value
[   31.942444] F2FS-fs (loop0): access invalid blkaddr:1030372864
[   31.948557] ------------[ cut here ]------------
[   31.953297] WARNING: CPU: 1 PID: 6357 at fs/f2fs/checkpoint.c:150 f2fs_is_valid_blkaddr+0x2d9/0x920
[   31.962450] Kernel panic - not syncing: panic_on_warn set ...
[   31.962450] 
[   31.969784] CPU: 1 PID: 6357 Comm: syz-executor477 Not tainted 4.14.198-syzkaller #0
[   31.977636] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   31.987049] Call Trace:
[   31.989614]  dump_stack+0x1b2/0x283
[   31.993254]  panic+0x1f9/0x42d
[   31.996420]  ? add_taint.cold+0x16/0x16
[   32.000372]  ? f2fs_is_valid_blkaddr+0x2d9/0x920
[   32.005108]  ? f2fs_is_valid_blkaddr+0x2d9/0x920
[   32.009837]  __warn.cold+0x20/0x4b
[   32.013358]  ? ist_end_non_atomic+0x10/0x10
[   32.017651]  ? f2fs_is_valid_blkaddr+0x2d9/0x920
[   32.022431]  report_bug+0x208/0x249
[   32.026074]  do_error_trap+0x195/0x2d0
[   32.029939]  ? math_error+0x2d0/0x2d0
[   32.033719]  ? log_store.cold+0x16/0x16
[   32.037708]  ? trace_hardirqs_on_caller+0x3a8/0x580
[   32.042698]  ? _raw_spin_unlock_irqrestore+0x66/0xe0
[   32.047774]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   32.052592]  invalid_op+0x1b/0x40
[   32.056019] RIP: 0010:f2fs_is_valid_blkaddr+0x2d9/0x920
[   32.061353] RSP: 0018:ffff888097577820 EFLAGS: 00010286
[   32.066689] RAX: dffffc0000000000 RBX: ffff88809a5822c0 RCX: 0000000000000000
[   32.073931] RDX: 0000000000000000 RSI: ffffffff86ac12c0 RDI: ffffed1012eaeede
[   32.081173] RBP: 0000000000000005 R08: 0000000000000032 R09: 0000000000000000
[   32.088413] R10: 0000000000000000 R11: 0000000000000000 R12: 000000003d6a3e00
[   32.095674] R13: ffff8880a1362480 R14: 0000000000000009 R15: 0000000000000200
[   32.102937]  f2fs_submit_page_bio+0x10a/0x1380
[   32.107503]  ? check_preemption_disabled+0x35/0x240
[   32.112495]  read_node_page+0x209/0x2f0
[   32.116444]  ? truncate_node+0xc80/0xc80
[   32.120487]  __get_node_page.part.0+0x97/0xea0
[   32.125172]  get_node_page+0xdd/0x170
[   32.128944]  f2fs_iget+0x1e8/0x3760
[   32.132550]  ? kmem_cache_alloc_trace+0x36c/0x3d0
[   32.137367]  f2fs_fill_super+0x30ac/0x56a0
[   32.141584]  ? snprintf+0xa5/0xd0
[   32.145011]  ? f2fs_commit_super+0x3a0/0x3a0
[   32.149405]  ? ns_test_super+0x50/0x50
[   32.153283]  ? set_blocksize+0x125/0x380
[   32.157337]  mount_bdev+0x2b3/0x360
[   32.160936]  ? f2fs_commit_super+0x3a0/0x3a0
[   32.165316]  mount_fs+0x92/0x2a0
[   32.168672]  vfs_kern_mount.part.0+0x5b/0x470
[   32.173156]  do_mount+0xe53/0x2a00
[   32.176670]  ? do_raw_spin_unlock+0x164/0x220
[   32.181139]  ? copy_mount_string+0x40/0x40
[   32.185347]  ? rcu_read_lock_sched_held+0x16c/0x1d0
[   32.190335]  ? copy_mnt_ns+0xa30/0xa30
[   32.194196]  ? copy_mount_options+0x1fa/0x2f0
[   32.198677]  ? copy_mnt_ns+0xa30/0xa30
[   32.202537]  SyS_mount+0xa8/0x120
[   32.205962]  ? copy_mnt_ns+0xa30/0xa30
[   32.209854]  do_syscall_64+0x1d5/0x640
[   32.213718]  entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   32.218878] RIP: 0033:0x44708a
[   32.222040] RSP: 002b:00007ffe8e40dec8 EFLAGS: 00000297 ORIG_RAX: 00000000000000a5
[   32.229827] RAX: ffffffffffffffda RBX: 00007ffe8e40df20 RCX: 000000000044708a
[   32.237067] RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007ffe8e40dee0
[   32.244309] RBP: 00007ffe8e40dee0 R08: 00007ffe8e40df20 R09: 00007ffe00000015
[   32.251562] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000009
[   32.258804] R13: 0000000000000004 R14: 0000000000000003 R15: 0000000000000003
[   32.267583] Kernel Offset: disabled
[   32.271240] Rebooting in 86400 seconds..