[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 62.571603][ T27] audit: type=1800 audit(1560821973.288:25): pid=8785 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 62.614489][ T27] audit: type=1800 audit(1560821973.298:26): pid=8785 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 62.664479][ T27] audit: type=1800 audit(1560821973.298:27): pid=8785 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.25' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 72.570981][ T8940] ------------[ cut here ]------------ [ 72.576473][ T8940] kernel BUG at drivers/android/binder_alloc.c:1130! [ 72.583205][ T8940] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 72.589275][ T8940] CPU: 1 PID: 8940 Comm: syz-executor337 Not tainted 5.2.0-rc5 #35 [ 72.597153][ T8940] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.607212][ T8940] RIP: 0010:binder_alloc_do_buffer_copy+0xd6/0x510 [ 72.613688][ T8940] Code: 02 00 0f 85 20 04 00 00 4d 8b 64 24 58 49 29 dc e8 bf 9d 1c fc 4c 89 e6 4c 89 ef e8 d4 9e 1c fc 4d 39 e5 76 07 e8 aa 9d 1c fc <0f> 0b e8 a3 9d 1c fc 4c 8b 75 d0 4d 29 ec 4c 89 e6 4c 89 f7 e8 b1 [ 72.633273][ T8940] RSP: 0018:ffff88809687f4e0 EFLAGS: 00010293 [ 72.639322][ T8940] RAX: ffff888086906280 RBX: 0000000020001000 RCX: ffffffff855423cf [ 72.647270][ T8940] RDX: 0000000000000000 RSI: ffffffff855423b6 RDI: 0000000000000006 [ 72.655271][ T8940] RBP: ffff88809687f560 R08: ffff888086906280 R09: 0000000000000008 [ 72.663234][ T8940] R10: ffffed1012d0ff15 R11: ffff88809687f8af R12: 0000000000000078 [ 72.671182][ T8940] R13: 0000000000000008 R14: 00000000000000e8 R15: 0000000000000000 [ 72.679130][ T8940] FS: 0000555555f94940(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 72.688208][ T8940] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.694767][ T8940] CR2: 0000000000000000 CR3: 00000000a4944000 CR4: 00000000001406e0 [ 72.702716][ T8940] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 72.710664][ T8940] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 72.718612][ T8940] Call Trace: [ 72.721891][ T8940] ? find_held_lock+0x35/0x130 [ 72.726639][ T8940] binder_alloc_copy_from_buffer+0x37/0x42 [ 72.732422][ T8940] binder_validate_ptr+0xcc/0x1d0 [ 72.737424][ T8940] ? binder_get_object+0x210/0x210 [ 72.742510][ T8940] ? binder_alloc_copy_from_buffer+0x37/0x42 [ 72.748472][ T8940] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 72.754341][ T8940] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 72.760038][ T8940] ? binder_get_object+0x181/0x210 [ 72.765144][ T8940] binder_transaction+0x2c9c/0x6620 [ 72.770332][ T8940] ? binder_thread_read+0x3d00/0x3d00 [ 72.775683][ T8940] ? mark_held_locks+0xf0/0xf0 [ 72.780423][ T8940] ? mark_held_locks+0xf0/0xf0 [ 72.785195][ T8940] ? __might_fault+0x12b/0x1e0 [ 72.789941][ T8940] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 72.796162][ T8940] ? _copy_from_user+0xdd/0x150 [ 72.800990][ T8940] binder_thread_write+0x64a/0x2820 [ 72.806164][ T8940] ? mark_held_locks+0xf0/0xf0 [ 72.810918][ T8940] ? fs_reclaim_acquire.part.0+0x30/0x30 [ 72.816534][ T8940] ? binder_transaction+0x6620/0x6620 [ 72.821884][ T8940] ? __might_fault+0x12b/0x1e0 [ 72.826630][ T8940] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 72.832842][ T8940] ? _copy_from_user+0xdd/0x150 [ 72.837669][ T8940] binder_ioctl+0x102f/0x1833 [ 72.842322][ T8940] ? binder_thread_write+0x2820/0x2820 [ 72.847768][ T8940] ? tomoyo_path_number_perm+0x263/0x520 [ 72.853372][ T8940] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 72.859157][ T8940] ? userfaultfd_unmap_prep+0x4a0/0x4a0 [ 72.864683][ T8940] ? binder_thread_write+0x2820/0x2820 [ 72.870117][ T8940] do_vfs_ioctl+0xd5f/0x1380 [ 72.874686][ T8940] ? ioctl_preallocate+0x210/0x210 [ 72.879799][ T8940] ? vma_is_stack_for_current+0xd0/0xd0 [ 72.885329][ T8940] ? ksys_dup3+0x3e0/0x3e0 [ 72.889724][ T8940] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 72.895937][ T8940] ? fput_many+0x12c/0x1a0 [ 72.900896][ T8940] ? fput+0x1b/0x20 [ 72.904699][ T8940] ? tomoyo_file_ioctl+0x23/0x30 [ 72.909612][ T8940] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.915842][ T8940] ? security_file_ioctl+0x8d/0xc0 [ 72.920926][ T8940] ksys_ioctl+0xab/0xd0 [ 72.925060][ T8940] __x64_sys_ioctl+0x73/0xb0 [ 72.929633][ T8940] do_syscall_64+0xfd/0x680 [ 72.934126][ T8940] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 72.939998][ T8940] RIP: 0033:0x444a29 [ 72.943876][ T8940] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 0f 83 7b d8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 72.963463][ T8940] RSP: 002b:00007ffe542c7418 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 72.971884][ T8940] RAX: ffffffffffffffda RBX: 00007ffe542c7420 RCX: 0000000000444a29 [ 72.979837][ T8940] RDX: 0000000020000440 RSI: 00000000c0306201 RDI: 0000000000000003 [ 72.987786][ T8940] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000401310 [ 72.995733][ T8940] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402730 [ 73.003707][ T8940] R13: 00000000004027c0 R14: 0000000000000000 R15: 0000000000000000 [ 73.011657][ T8940] Modules linked in: [ 73.016271][ T8940] ---[ end trace 09de78681ad6ed9a ]--- [ 73.021751][ T8940] RIP: 0010:binder_alloc_do_buffer_copy+0xd6/0x510 [ 73.028989][ T8940] Code: 02 00 0f 85 20 04 00 00 4d 8b 64 24 58 49 29 dc e8 bf 9d 1c fc 4c 89 e6 4c 89 ef e8 d4 9e 1c fc 4d 39 e5 76 07 e8 aa 9d 1c fc <0f> 0b e8 a3 9d 1c fc 4c 8b 75 d0 4d 29 ec 4c 89 e6 4c 89 f7 e8 b1 [ 73.048622][ T8940] RSP: 0018:ffff88809687f4e0 EFLAGS: 00010293 [ 73.054715][ T8940] RAX: ffff888086906280 RBX: 0000000020001000 RCX: ffffffff855423cf [ 73.062662][ T8940] RDX: 0000000000000000 RSI: ffffffff855423b6 RDI: 0000000000000006 [ 73.070643][ T8940] RBP: ffff88809687f560 R08: ffff888086906280 R09: 0000000000000008 [ 73.078624][ T8940] R10: ffffed1012d0ff15 R11: ffff88809687f8af R12: 0000000000000078 [ 73.086608][ T8940] R13: 0000000000000008 R14: 00000000000000e8 R15: 0000000000000000 [ 73.094603][ T8940] FS: 0000555555f94940(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 73.103505][ T8940] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 73.110095][ T8940] CR2: 0000000000000000 CR3: 00000000a4944000 CR4: 00000000001406e0 [ 73.118084][ T8940] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 73.126066][ T8940] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 73.134031][ T8940] Kernel panic - not syncing: Fatal exception [ 73.141095][ T8940] Kernel Offset: disabled [ 73.145418][ T8940] Rebooting in 86400 seconds..