[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 20.540795] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. [ 20.742200] random: sshd: uninitialized urandom read (32 bytes read) [ 21.075705] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.966340] random: sshd: uninitialized urandom read (32 bytes read) [ 28.065313] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.35' (ECDSA) to the list of known hosts. [ 33.497276] random: sshd: uninitialized urandom read (32 bytes read) 2018/07/09 18:36:57 parsed 1 programs [ 35.772169] random: cc1: uninitialized urandom read (8 bytes read) 2018/07/09 18:37:00 executed programs: 0 [ 37.316827] IPVS: ftp: loaded support on port[0] = 21 [ 37.562783] bridge0: port 1(bridge_slave_0) entered blocking state [ 37.569428] bridge0: port 1(bridge_slave_0) entered disabled state [ 37.576807] device bridge_slave_0 entered promiscuous mode [ 37.595555] bridge0: port 2(bridge_slave_1) entered blocking state [ 37.602077] bridge0: port 2(bridge_slave_1) entered disabled state [ 37.609131] device bridge_slave_1 entered promiscuous mode [ 37.625362] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 37.642988] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 37.696994] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 37.716794] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 37.783816] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 37.791702] team0: Port device team_slave_0 added [ 37.810127] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 37.817401] team0: Port device team_slave_1 added [ 37.834385] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 37.853493] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 37.875150] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 37.893944] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 38.049308] bridge0: port 2(bridge_slave_1) entered blocking state [ 38.055999] bridge0: port 2(bridge_slave_1) entered forwarding state [ 38.063154] bridge0: port 1(bridge_slave_0) entered blocking state [ 38.069573] bridge0: port 1(bridge_slave_0) entered forwarding state [ 38.615385] 8021q: adding VLAN 0 to HW filter on device bond0 [ 38.677586] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 38.733704] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 38.741081] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 38.748521] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 38.805949] 8021q: adding VLAN 0 to HW filter on device team0 [ 39.172883] BUG: unable to handle kernel paging request at ffffebe000000008 [ 39.180050] PGD 0 P4D 0 [ 39.182726] Oops: 0000 [#1] SMP KASAN [ 39.186538] CPU: 1 PID: 4850 Comm: syz-executor0 Not tainted 4.18.0-rc4+ #41 [ 39.193710] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.203070] RIP: 0010:kfree+0xa0/0x260 [ 39.206949] Code: 82 cb 01 00 00 48 ba 00 00 00 80 ff 77 00 00 48 01 c2 48 89 df 48 b8 00 00 00 00 00 ea ff ff 48 c1 ea 0c 48 c1 e2 06 48 01 c2 <48> 8b 42 08 a8 01 48 8d 48 ff 48 0f 45 d1 4c 8b 6a 18 49 63 75 74 [ 39.226093] RSP: 0018:ffff8801cfdd74e0 EFLAGS: 00010086 [ 39.231448] RAX: ffffea0000000000 RBX: 0000000000000286 RCX: 0000000000000000 [ 39.238731] RDX: ffffebe000000000 RSI: 0000000000000000 RDI: 0000000000000286 [ 39.245991] RBP: ffff8801cfdd7500 R08: ffffed003b5e46d7 R09: ffffed003b5e46d6 [ 39.253267] R10: ffffed003b5e46d6 R11: ffff8801daf236b3 R12: 0000000000000286 [ 39.260541] R13: ffffffff8766d6c3 R14: ffff8801cfdd7650 R15: ffff8801cf611680 [ 39.267808] FS: 0000000000000000(0000) GS:ffff8801daf00000(0063) knlGS:000000000972f900 [ 39.276036] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 39.281916] CR2: ffffebe000000008 CR3: 00000001cba80000 CR4: 00000000001406e0 [ 39.289184] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.296468] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.303733] Call Trace: [ 39.306773] p9_client_create+0xf43/0x16c9 [ 39.311012] ? p9_client_read+0xc60/0xc60 [ 39.315781] ? find_held_lock+0x36/0x1c0 [ 39.319841] ? __lockdep_init_map+0x105/0x590 [ 39.324340] ? kasan_check_write+0x14/0x20 [ 39.328580] ? __init_rwsem+0x1cc/0x2a0 [ 39.332565] ? do_raw_write_unlock.cold.8+0x49/0x49 [ 39.337591] ? rcu_read_lock_sched_held+0x108/0x120 [ 39.342607] ? __kmalloc_track_caller+0x5f5/0x760 [ 39.347451] ? save_stack+0xa9/0xd0 [ 39.351080] ? save_stack+0x43/0xd0 [ 39.354753] ? kasan_kmalloc+0xc4/0xe0 [ 39.358638] ? memcpy+0x45/0x50 [ 39.361920] v9fs_session_init+0x21a/0x1a80 [ 39.366253] ? find_held_lock+0x36/0x1c0 [ 39.370315] ? v9fs_show_options+0x7e0/0x7e0 [ 39.374726] ? kasan_check_read+0x11/0x20 [ 39.378872] ? rcu_is_watching+0x8c/0x150 [ 39.383042] ? rcu_pm_notify+0xc0/0xc0 [ 39.386937] ? rcu_pm_notify+0xc0/0xc0 [ 39.390836] ? v9fs_mount+0x61/0x900 [ 39.394562] ? rcu_read_lock_sched_held+0x108/0x120 [ 39.399591] ? kmem_cache_alloc_trace+0x616/0x780 [ 39.404444] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 39.409990] v9fs_mount+0x7c/0x900 [ 39.413550] mount_fs+0xae/0x328 [ 39.417054] vfs_kern_mount.part.34+0xdc/0x4e0 [ 39.421649] ? may_umount+0xb0/0xb0 [ 39.425316] ? _raw_read_unlock+0x22/0x30 [ 39.429460] ? __get_fs_type+0x97/0xc0 [ 39.433352] do_mount+0x581/0x30e0 [ 39.436894] ? copy_mount_string+0x40/0x40 [ 39.441129] ? copy_mount_options+0x5f/0x380 [ 39.445553] ? rcu_read_lock_sched_held+0x108/0x120 [ 39.450568] ? kmem_cache_alloc_trace+0x616/0x780 [ 39.455417] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.460971] ? copy_mount_options+0x285/0x380 [ 39.465561] __ia32_compat_sys_mount+0x5d5/0x860 [ 39.470314] do_fast_syscall_32+0x34d/0xfb2 [ 39.474640] ? do_int80_syscall_32+0x890/0x890 [ 39.479220] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 39.483972] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 39.489521] ? syscall_return_slowpath+0x31d/0x5e0 [ 39.494447] ? sysret32_from_system_call+0x5/0x46 [ 39.499289] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.504149] entry_SYSENTER_compat+0x70/0x7f [ 39.508552] RIP: 0023:0xf7fd7cb9 [ 39.511901] Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 39.531085] RSP: 002b:00000000ffb2f91c EFLAGS: 00000282 ORIG_RAX: 0000000000000015 [ 39.538789] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000200001c0 [ 39.546056] RDX: 00000000200002c0 RSI: 0000000000000000 RDI: 00000000200003c0 [ 39.553317] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 39.560575] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 39.567842] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 39.575110] Modules linked in: [ 39.578347] Dumping ftrace buffer: [ 39.581873] (ftrace buffer empty) [ 39.585573] CR2: ffffebe000000008 [ 39.589042] ---[ end trace 0d63a65a88502ca4 ]--- [ 39.593796] RIP: 0010:kfree+0xa0/0x260 [ 39.597684] Code: 82 cb 01 00 00 48 ba 00 00 00 80 ff 77 00 00 48 01 c2 48 89 df 48 b8 00 00 00 00 00 ea ff ff 48 c1 ea 0c 48 c1 e2 06 48 01 c2 <48> 8b 42 08 a8 01 48 8d 48 ff 48 0f 45 d1 4c 8b 6a 18 49 63 75 74 [ 39.616832] RSP: 0018:ffff8801cfdd74e0 EFLAGS: 00010086 [ 39.622186] RAX: ffffea0000000000 RBX: 0000000000000286 RCX: 0000000000000000 [ 39.629533] RDX: ffffebe000000000 RSI: 0000000000000000 RDI: 0000000000000286 [ 39.636792] RBP: ffff8801cfdd7500 R08: ffffed003b5e46d7 R09: ffffed003b5e46d6 [ 39.644077] R10: ffffed003b5e46d6 R11: ffff8801daf236b3 R12: 0000000000000286 [ 39.651342] R13: ffffffff8766d6c3 R14: ffff8801cfdd7650 R15: ffff8801cf611680 [ 39.658602] FS: 0000000000000000(0000) GS:ffff8801daf00000(0063) knlGS:000000000972f900 [ 39.666820] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 39.672713] CR2: ffffebe000000008 CR3: 00000001cba80000 CR4: 00000000001406e0 [ 39.679985] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.687246] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.694499] Kernel panic - not syncing: Fatal exception [ 39.700366] Dumping ftrace buffer: [ 39.703928] (ftrace buffer empty) [ 39.707639] Kernel Offset: disabled [ 39.711252] Rebooting in 86400 seconds..