[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   19.784233] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   24.048620] random: sshd: uninitialized urandom read (32 bytes read)
[   24.410141] random: sshd: uninitialized urandom read (32 bytes read)
[   25.257499] random: sshd: uninitialized urandom read (32 bytes read)
[   25.413077] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.10.9' (ECDSA) to the list of known hosts.
[   30.934406] random: sshd: uninitialized urandom read (32 bytes read)
[   31.042762] IPVS: ftp: loaded support on port[0] = 21
[   31.045831] IPVS: ftp: loaded support on port[0] = 21
[   31.052502] IPVS: ftp: loaded support on port[0] = 21
[   31.053491] IPVS: ftp: loaded support on port[0] = 21
[   31.060552] IPVS: ftp: loaded support on port[0] = 21
[   31.064456] IPVS: ftp: loaded support on port[0] = 21
[   31.070462] IPVS: ftp: loaded support on port[0] = 21
[   31.075262] IPVS: ftp: loaded support on port[0] = 21
net.ipv6.conf.syz_tun.accept_dad = 0
net.ipv6.conf.syz_tun.accept_dad = 0
net.ipv6.conf.syz_tun.router_solicitations = 0
net.ipv6.conf.syz_tun.accept_dad = 0
net.ipv6.conf.syz_tun.accept_dad = 0
net.ipv6.conf.syz_tun.accept_dad = 0
net.ipv6.conf.syz_tun.accept_dad = 0
net.ipv6.conf.syz_tun.accept_dad = 0
net.ipv6.conf.syz_tun.accept_dad = 0
net.ipv6.conf.syz_tun.router_solicitations = 0
net.ipv6.conf.syz_tun.router_solicitations = 0
net.ipv6.conf.syz_tun.router_solicitations = 0
net.ipv6.conf.syz_tun.router_solicitations = 0
net.ipv6.conf.syz_tun.router_solicitations = 0
net.ipv6.conf.syz_tun.router_solicitations = 0
net.ipv6.conf.syz_tun.router_solicitations = 0
executing program
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[   31.692666] FS-Cache: Duplicate cookie detected
[   31.697497] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1]
[   31.705719] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____)
[   31.712339] FS-Cache: O-key=[10] '34323934363938393839'
[   31.717824] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1]
[   31.725848] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____)
[   31.732403] FS-Cache: N-key=[10] '34323934363938393839'
[   31.737594] FS-Cache: Duplicate cookie detected
executing program
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[   31.742575] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1]
[   31.750870] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____)
[   31.757432] FS-Cache: O-key=[10] '34323934363939303239'
[   31.762888] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1]
[   31.770906] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____)
[   31.777437] FS-Cache: N-key=[10] '34323934363939303239'
[   31.804951] FS-Cache: Duplicate cookie detected
[   31.809733] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1]
[   31.811214] FS-Cache: Duplicate cookie detected
[   31.817946] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____)
[   31.822638] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1]
[   31.822649] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____)
[   31.829153] FS-Cache: O-key=[10] '34
[   31.837321] FS-Cache: O-key=[10] '34323934363939313036'
[   31.837371] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1]
[   31.837378] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____)
[   31.837383] FS-Cache: N-key=[10] '34323934363939313036'
[   31.840664] FS-Cache: Duplicate cookie detected
[   31.844023] 32393436
[   31.847768] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1]
[   31.847779] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____)
[   31.853131] 3939313031'
[   31.853164] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1]
[   31.861135] FS-Cache: O-key=[10] '
[   31.867717] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____)
[   31.873067] 3432
[   31.877738] FS-Cache: N-key=[10] '
[   31.880051] 3934
[   31.888219] 34
[   31.894710] 3639
[   31.897311] 32
[   31.905275] 3931
[   31.908820] 39
[   31.915311] 3334
[   31.917291] 34
[   31.920817] '
[   31.920833] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1]
[   31.922798] 36
[   31.924593] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____)
executing program
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executing program
[   31.924601] FS-Cache: N-key=[10] '
[   31.926569] 39
[   31.928359] 343239
[   31.930347] 39
[   31.932154] 3436
[   31.934135] 31
[   31.935927] 3939
[   31.937647] 30
[   31.945615] 3133
[   31.947434] 31
[   31.953915] 34'
[   31.957455] '
[   31.964486] FS-Cache: Duplicate cookie detected
[   31.983097] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1]
[   31.991271] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____)
[   31.997800] FS-Cache: O-key=[10] '34323934363939323630'
executing program
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[   32.003913] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1]
[   32.011917] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____)
[   32.018445] FS-Cache: N-key=[10] '34323934363939323630'
executing program
executing program
executing program
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[   32.056773] FS-Cache: Duplicate cookie detected
[   32.061571] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1]
[   32.069761] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____)
[   32.076308] FS-Cache: O-key=[10] '34323934363939333533'
[   32.081793] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1]
[   32.089808] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____)
[   32.096444] FS-Cache: N-key=[10] '34323934363939333533'
[   32.122608] FS-Cache: Duplicate cookie detected
[   32.127389] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1]
[   32.135578] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____)
[   32.142092] FS-Cache: O-key=[10] '34323934363939343139'
[   32.147629] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1]
[   32.155641] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____)
[   32.162129] FS-Cache: N-key=[10] '34323934363939343139'
[   32.167528] FS-Cache: Duplicate cookie detected
[   32.169696] BUG: unable to handle kernel paging request at ffffebe000000008
[   32.172227] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1]
[   32.179309] PGD 0 P4D 0 
[   32.179344] Oops: 0000 [#1] SMP KASAN
[   32.187454] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____)
[   32.190110] CPU: 0 PID: 4729 Comm: syz-executor091 Not tainted 4.18.0-rc4+ #147
[   32.190120] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   32.193900] FS-Cache: O-key=[10] '
[   32.200368] RIP: 0010:kfree+0xa0/0x260
[   32.200375] Code: 
[   32.207813] 34
[   32.217136] 82 cb 01 00 
[   32.220670] 32
[   32.224521] 00 48 ba 00 00 
[   32.226668] 39
[   32.228457] 00 80 ff 77 00 
[   32.231123] 34
[   32.232904] 00 48 01 c2 48 
[   32.235838] 36
[   32.237605] 89 df 48 b8 00 
[   32.240535] 39
[   32.242304] 00 00 00 00 
[   32.245230] 39
[   32.247000] ea ff ff 48 
[   32.249925] 34
[   32.251695] c1 ea 0c 48 c1 
[   32.254362] 31
[   32.256146] e2 06 48 01 c2 
[   32.258832] 39
[   32.260605] <48> 8b 42 08 
[   32.263528] '
[   32.265310] a8 01 48 
[   32.268246] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1]
[   32.270007] 8d 48 ff 48 0f 
[   32.272853] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____)
[   32.274530] 45 d1 4c 8b 6a 
[   32.276953] FS-Cache: N-key=[10] '
[   32.284897] 18 49 63 75 74 
[   32.287832] 34
[   32.294296] RSP: 0018:ffff8801abd37520 EFLAGS: 00010086
[   32.294317] RAX: ffffea0000000000 RBX: 0000000000000286 RCX: 0000000000000000
[   32.297230] 32
[   32.300752] RDX: ffffebe000000000 RSI: 0000000000000000 RDI: 0000000000000286
[   32.300759] RBP: ffff8801abd37540 R08: ffffed003b5c46d7 R09: ffffed003b5c46d6
[   32.300770] R10: ffffed003b5c46d6 R11: ffff8801dae236b3 R12: 0000000000000286
[   32.303681] 39
[   32.305455] R13: ffffffff8766e76a R14: ffff8801abd37690 R15: ffff8801afca2a00
[   32.305463] FS:  00007f7f012ae700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
[   32.305475] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.310815] 34
executing program
executing program
executing program
[   32.318056] CR2: ffffebe000000008 CR3: 00000001d882b000 CR4: 00000000001406f0
[   32.318069] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   32.319848] 36
[   32.327102] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   32.327106] Call Trace:
[   32.327127]  p9_client_create+0xfea/0x1770
[   32.334384] 39
[   32.341636]  ? p9_client_read+0xc60/0xc60
[   32.341653]  ? find_held_lock+0x36/0x1c0
[   32.343441] 39
[   32.350717]  ? __lockdep_init_map+0x105/0x590
[   32.350734]  ? kasan_check_write+0x14/0x20
[   32.358936] 34
[   32.364805]  ? __init_rwsem+0x1cc/0x2a0
[   32.364816]  ? do_raw_write_unlock.cold.8+0x49/0x49
[   32.364834]  ? rcu_read_lock_sched_held+0x108/0x120
[   32.366608] 31
[   32.374117]  ? __kmalloc_track_caller+0x5f5/0x760
[   32.374132]  ? save_stack+0xa9/0xd0
[   32.381381] 39
[   32.383162]  ? save_stack+0x43/0xd0
[   32.383177]  ? kasan_kmalloc+0xc4/0xe0
[   32.390424] '
[   32.392983]  ? kmem_cache_alloc_trace+0x152/0x780
[   32.392998]  ? memcpy+0x45/0x50
[   32.401442] FS-Cache: Duplicate cookie detected
[   32.403128]  v9fs_session_init+0x21a/0x1a80
[   32.403145]  ? find_held_lock+0x36/0x1c0
[   32.407222] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1]
[   32.409003]  ? v9fs_show_options+0x7e0/0x7e0
[   32.409018]  ? kasan_check_read+0x11/0x20
[   32.409032]  ? rcu_is_watching+0x8c/0x150
[   32.413509] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____)
[   32.417723]  ? rcu_pm_notify+0xc0/0xc0
[   32.417738]  ? v9fs_mount+0x61/0x900
[   32.419519] FS-Cache: O-key=[10] '
[   32.423469]  ? rcu_read_lock_sched_held+0x108/0x120
[   32.423481]  ? kmem_cache_alloc_trace+0x616/0x780
[   32.423498]  ? __sanitizer_cov_trace_const_cmp2+0x18/0x20
[   32.428502] 34
[   32.433494]  v9fs_mount+0x7c/0x900
[   32.433510]  mount_fs+0xae/0x328
[   32.435289] 32
[   32.440110]  vfs_kern_mount.part.34+0xdc/0x4e0
[   32.440125]  ? may_umount+0xb0/0xb0
[   32.443726] 39
[   32.445517]  ? _raw_read_unlock+0x22/0x30
[   32.445531]  ? __get_fs_type+0x97/0xc0
[   32.449143] 34
[   32.453009]  do_mount+0x581/0x30e0
[   32.453025]  ? do_raw_spin_unlock+0xa7/0x2f0
[   32.454713] 36
[   32.459532]  ? copy_mount_string+0x40/0x40
[   32.459549]  ? copy_mount_options+0x5f/0x380
[   32.462808] 39
[   32.467447]  ? rcu_read_lock_sched_held+0x108/0x120
[   32.467462]  ? kmem_cache_alloc_trace+0x616/0x780
[   32.471759] 39
[   32.475796]  ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[   32.475814]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   32.484014] 34
[   32.488411]  ? copy_mount_options+0x285/0x380
[   32.488426]  ksys_mount+0x12d/0x140
[   32.492552] 36
[   32.496692]  __x64_sys_mount+0xbe/0x150
[   32.496710]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   32.503185] 36
[   32.507050]  do_syscall_64+0x1b9/0x820
[   32.507065]  ? finish_task_switch+0x1d3/0x870
[   32.510753] '
[   32.514285]  ? syscall_return_slowpath+0x5e0/0x5e0
[   32.514308]  ? syscall_return_slowpath+0x31d/0x5e0
[   32.519303] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1]
[   32.524121]  ? entry_SYSCALL_64_after_hwframe+0x59/0xbe
[   32.524137]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   32.529653] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____)
[   32.531430]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   32.531443] RIP: 0033:0x446a59
[   32.534962] FS-Cache: N-key=[10] '
[   32.538299] Code: e8 6c 
[   32.540099] 34
[   32.544653] e7 ff ff 48 83 
[   32.548302] 32
[   32.550084] c4 18 c3 0f 
[   32.554248] 39
[   32.558124] 1f 80 00 00 00 
[   32.559925] 34
[   32.563432] 00 48 89 f8 48 
[   32.567841] 36
[   32.569610] 89 f7 48 89 d6 
[   32.573842] 39
[   32.578216] 48 89 ca 4d 89 c2 
[   32.580192] 39
[   32.585174] 4d 89 c8 4c 8b 4c 
[   32.590052] 34
[   32.591821] 24 08 0f 05 <48> 
[   32.597359] 36
[   32.602862] 3d 01 f0 ff ff 
[   32.604665] 36
[   32.609123] 0f 83 ab 06 fc ff 
[   32.612749] '
[   32.614520] c3 66 2e 0f 1f 
[   32.619343] FS-Cache: Duplicate cookie detected
[   32.623499] 84 00 00 00 00 
[   32.623520] RSP: 002b:00007f7f012adda8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
[   32.623535] RAX: ffffffffffffffda RBX: 00000000006dcc5c RCX: 0000000000446a59
[   32.625331] FS-Cache: O-cookie c=(____ptrval____) [p=(____ptrval____) fl=222 nc=0 na=1]
[   32.629181] RDX: 0000000020000180 RSI: 0000000020000140 RDI: 0000000000000000
[   32.629188] RBP: 00000000006dcc58 R08: 0000000020000300 R09: 0000000000000000
[   32.629199] R10: 0000000000000000 R11: 0000000000000202 R12: 0031656c69662f2e
[   32.633676] FS-Cache: O-cookie d=(____ptrval____) n=(____ptrval____)
[   32.635362] R13: 6f6c3d6568636163 R14: 64663d736e617274 R15: 0000000000000001
[   32.635374] Modules linked in:
[   32.640294] FS-Cache: O-key=[10] '
[   32.645192] Dumping ftrace buffer:
[   32.645196]    (ftrace buffer empty)
[   32.645205] CR2: ffffebe000000008
[   32.653154] 34
[   32.658492] ---[ end trace 44b911ed7ea536fb ]---
[   32.658513] RIP: 0010:kfree+0xa0/0x260
[   32.663326] 32
[   32.669798] Code: 82 cb 01 
[   32.675016] 39
[   32.678191] 00 00 48 ba 
[   32.681730] 34
[   32.684368] 00 00 00 80 ff 
[   32.686168] 36
[   32.689069] 77 00 00 48 01 
[   32.690868] 39
[   32.693507] c2 48 89 df 48 
[   32.695310] 39
[   32.698208] b8 00 00 00 00 
[   32.700012] 34
[   32.702921] 00 ea ff ff 48 
[   32.704724] 36
[   32.707620] c1 ea 0c 48 c1 
[   32.709437] 36
[   32.712594] e2 06 48 01 c2 
[   32.714403] '
[   32.717562] <48> 8b 42 08 a8 
[   32.719373] FS-Cache: N-cookie c=(____ptrval____) [p=(____ptrval____) fl=2 nc=0 na=1]
[   32.722436] 01 48 8d 48 ff 
[   32.724240] FS-Cache: N-cookie d=(____ptrval____) n=(____ptrval____)
[   32.727136] 48 0f 45 d1 4c 
[   32.728935] FS-Cache: N-key=[10] '
[   32.732091] 8b 6a 18 49 63 
[   32.733821] 34
[   32.736719] 75 74 
[   32.736730] RSP: 0018:ffff8801abd37520 EFLAGS: 00010086
[   32.741385] 32
[   32.744295] RAX: ffffea0000000000 RBX: 0000000000000286 RCX: 0000000000000000
[   32.744302] RDX: ffffebe000000000 RSI: 0000000000000000 RDI: 0000000000000286
[   32.744313] RBP: ffff8801abd37540 R08: ffffed003b5c46d7 R09: ffffed003b5c46d6
[   32.751997] 39
[   32.759237] R10: ffffed003b5c46d6 R11: ffff8801dae236b3 R12: 0000000000000286
[   32.759245] R13: ffffffff8766e76a R14: ffff8801abd37690 R15: ffff8801afca2a00
[   32.759258] FS:  00007f7f012ae700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
[   32.767379] 34
[   32.774619] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.774626] CR2: ffffebe000000008 CR3: 00000001d882b000 CR4: 00000000001406f0
[   32.774637] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   32.781897] 36
[   32.789139] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   32.789145] Kernel panic - not syncing: Fatal exception
[   32.796525] Dumping ftrace buffer:
[   32.796530]    (ftrace buffer empty)
[   32.796535] Kernel Offset: disabled
[   33.009472] Rebooting in 86400 seconds..