[ 32.301938] audit: type=1800 audit(1565968604.451:34): pid=6834 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0 [ 32.366752] random: sshd: uninitialized urandom read (32 bytes read) [ 32.661021] audit: type=1400 audit(1565968604.841:35): avc: denied { map } for pid=7008 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [ 32.724807] random: sshd: uninitialized urandom read (32 bytes read) [ 33.280717] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 49.814906] audit: type=1400 audit(1565968621.991:36): avc: denied { map } for pid=7017 comm="sh" path="/bin/dash" dev="sda1" ino=1473 scontext=system_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [ 53.832652] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.1.36' (ECDSA) to the list of known hosts. [ 59.284563] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 59.414620] audit: type=1400 audit(1565968631.591:37): avc: denied { map } for pid=7024 comm="syz-executor631" path="/root/syz-executor631360570" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 62.710536] ------------[ cut here ]------------ [ 62.715464] kernel BUG at ./include/linux/skbuff.h:1406! [ 62.721028] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 62.726389] Modules linked in: [ 62.729593] CPU: 1 PID: 9856 Comm: syz-executor631 Not tainted 4.14.139 #35 [ 62.736685] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.746036] task: ffff88807fee8080 task.stack: ffff888089d18000 [ 62.752109] RIP: 0010:tcp_fragment+0x12a7/0x13e0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 62.756862] RSP: 0018:ffff8880aef07c00 EFLAGS: 00010206 [ 62.762230] RAX: ffff88807fee8080 RBX: ffff888085acc080 RCX: 1ffff11015081ae9 [ 62.769497] RDX: 0000000000000100 RSI: ffff888085acc080 RDI: ffff888085acc088 [ 62.776765] RBP: ffff8880aef07c58 R08: 0000000001080020 R09: ffff888085acc0a8 [ 62.784038] R10: ffff88821fff8050 R11: 0000000000000001 R12: 0000000000000000 [ 62.791308] R13: 0000000000006880 R14: ffff8880a840d750 R15: 0000000001080020 [ 62.798579] FS: 0000000001538880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 62.806805] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.812684] CR2: 0000000020000484 CR3: 000000007fc17000 CR4: 00000000001406e0 [ 62.819954] Call Trace: [ 62.822531] [ 62.824719] tcp_write_wakeup+0x34c/0x5b0 [ 62.828873] tcp_send_probe0+0x4b/0x3fe [ 62.832852] tcp_write_timer_handler+0x6da/0x7e0 [ 62.837611] tcp_write_timer+0xd8/0x180 [ 62.841605] call_timer_fn+0x161/0x670 [ 62.845497] ? tcp_write_timer_handler+0x7e0/0x7e0 [ 62.850425] ? __next_timer_interrupt+0x140/0x140 [ 62.855369] ? trace_hardirqs_on_caller+0x19b/0x590 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 62.860386] run_timer_softirq+0x5b4/0x1570 [ 62.864707] ? tcp_write_timer_handler+0x7e0/0x7e0 [ 62.869639] ? add_timer+0xae0/0xae0 [ 62.873358] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 62.878812] __do_softirq+0x244/0x9a0 [ 62.882613] ? sched_clock+0x2e/0x50 [ 62.886335] irq_exit+0x160/0x1b0 [ 62.889792] smp_apic_timer_interrupt+0x146/0x5e0 [ 62.894639] apic_timer_interrupt+0x96/0xa0 [ 62.898954] [ 62.901180] RIP: 0010:_raw_spin_unlock_irqrestore+0x95/0xe0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 62.906888] RSP: 0018:ffff888089d1fa10 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 [ 62.914596] RAX: 1ffffffff0ee2a59 RBX: 0000000000000286 RCX: 0000000000000000 [ 62.921863] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000286 [ 62.929129] RBP: ffff888089d1fa20 R08: ffff88807fee8080 R09: 0000000000000000 [ 62.936396] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809287a8c0 [ 62.943665] R13: ffff88809287a100 R14: 0000000000000001 R15: ffff8880aef2c518 [ 62.950945] try_to_wake_up+0xa8/0xf90 [ 62.954841] ? migrate_swap_stop+0x920/0x920 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 62.959251] ? lock_downgrade+0x6e0/0x6e0 [ 62.963399] wake_up_q+0x95/0xf0 [ 62.966793] futex_wake+0x38b/0x430 [ 62.970423] ? get_futex_key+0x1040/0x1040 [ 62.974664] do_futex+0x290/0x19e0 [ 62.978212] ? trace_hardirqs_on+0x10/0x10 [ 62.982448] ? save_trace+0x290/0x290 [ 62.986245] ? save_trace+0x290/0x290 [ 62.990045] ? exit_robust_list+0x230/0x230 [ 62.994361] ? SyS_futex+0x29f/0x302 [ 62.998085] ? kvm_clock_read+0x23/0x40 [ 63.002071] ? kvm_clock_get_cycles+0x9/0x10 [ 63.006573] ? ktime_get+0x1ba/0x2c0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 63.010321] SyS_futex+0x215/0x302 [ 63.013875] ? do_futex+0x19e0/0x19e0 [ 63.017687] ? SyS_clock_gettime+0xf8/0x180 [ 63.022013] ? do_syscall_64+0x53/0x640 [ 63.025999] ? do_futex+0x19e0/0x19e0 [ 63.029831] do_syscall_64+0x1e8/0x640 [ 63.033724] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 63.038587] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 63.043776] RIP: 0033:0x446d39 [ 63.046963] RSP: 002b:00007fff77448268 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 63.054673] RAX: ffffffffffffffda RBX: 000000000000f4f5 RCX: 0000000000446d39 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 63.061940] RDX: 0000000000446d39 RSI: 0000000000000081 RDI: 00000000006dcc28 [ 63.069209] RBP: 00000000006dcc2c R08: 0000000000000000 R09: 0000000000000000 [ 63.076476] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc20 [ 63.083750] R13: 0000000000000000 R14: 20c49ba5e353f7cf R15: 0000000000000002 [ 63.091030] Code: 3c 02 00 0f 85 4f 01 00 00 48 8b 45 d0 ba 00 00 00 00 4c 8b b0 58 02 00 00 4c 3b 75 c0 4c 0f 44 f2 e9 e6 fc ff ff e8 49 72 35 fc <0f> 0b e8 a2 1f 5f fc e9 31 fa ff ff 48 89 df e8 f5 1e 5f fc e9 executing program executing program [ 63.110235] RIP: tcp_fragment+0x12a7/0x13e0 RSP: ffff8880aef07c00 [ 63.116506] ---[ end trace 641dbfcccf84f6ae ]--- [ 63.121283] Kernel panic - not syncing: Fatal exception in interrupt [ 63.128778] Kernel Offset: disabled [ 63.132412] Rebooting in 86400 seconds..