[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 62.817242][ T26] audit: type=1800 audit(1560810671.328:25): pid=8665 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 62.856346][ T26] audit: type=1800 audit(1560810671.328:26): pid=8665 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 62.899894][ T26] audit: type=1800 audit(1560810671.338:27): pid=8665 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 '10.128.0.33' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 74.199633][ T8822] ------------[ cut here ]------------ [ 74.207243][ T8822] kernel BUG at drivers/android/binder_alloc.c:1130! [ 74.214021][ T8822] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 74.220106][ T8822] CPU: 0 PID: 8822 Comm: syz-executor294 Not tainted 5.2.0-rc5 #54 [ 74.227983][ T8822] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.238037][ T8822] RIP: 0010:binder_alloc_do_buffer_copy+0xd6/0x510 [ 74.244611][ T8822] 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 [ 74.264229][ T8822] RSP: 0018:ffff888098b9f4e0 EFLAGS: 00010293 [ 74.270303][ T8822] RAX: ffff88808a54a5c0 RBX: 0000000020001000 RCX: ffffffff855423cf [ 74.278350][ T8822] RDX: 0000000000000000 RSI: ffffffff855423b6 RDI: 0000000000000006 [ 74.286321][ T8822] RBP: ffff888098b9f560 R08: ffff88808a54a5c0 R09: 0000000000000008 [ 74.294288][ T8822] R10: ffffed1013173f15 R11: ffff888098b9f8af R12: 0000000000000078 [ 74.302244][ T8822] R13: 0000000000000008 R14: 00000000000000a8 R15: 0000000000000000 [ 74.310214][ T8822] FS: 0000555555aae940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 74.319128][ T8822] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.325699][ T8822] CR2: 0000000000000000 CR3: 0000000096af8000 CR4: 00000000001406f0 [ 74.333675][ T8822] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.341638][ T8822] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.349592][ T8822] Call Trace: [ 74.352882][ T8822] ? find_held_lock+0x35/0x130 [ 74.357646][ T8822] binder_alloc_copy_from_buffer+0x37/0x42 [ 74.363446][ T8822] binder_validate_ptr+0xcc/0x1d0 [ 74.368551][ T8822] ? binder_get_object+0x210/0x210 [ 74.373646][ T8822] ? binder_alloc_copy_from_buffer+0x37/0x42 [ 74.379690][ T8822] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 74.385576][ T8822] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 74.391284][ T8822] ? binder_get_object+0x181/0x210 [ 74.396381][ T8822] binder_transaction+0x2c9c/0x6620 [ 74.401570][ T8822] ? binder_thread_read+0x3d00/0x3d00 [ 74.406929][ T8822] ? mark_held_locks+0xf0/0xf0 [ 74.411675][ T8822] ? mark_held_locks+0xf0/0xf0 [ 74.416429][ T8822] ? __might_fault+0x12b/0x1e0 [ 74.421223][ T8822] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 74.427454][ T8822] ? _copy_from_user+0xdd/0x150 [ 74.432285][ T8822] binder_thread_write+0x64a/0x2820 [ 74.437557][ T8822] ? mark_held_locks+0xf0/0xf0 [ 74.442317][ T8822] ? fs_reclaim_acquire.part.0+0x30/0x30 [ 74.447969][ T8822] ? binder_transaction+0x6620/0x6620 [ 74.453351][ T8822] ? __might_fault+0x12b/0x1e0 [ 74.458105][ T8822] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 74.464324][ T8822] ? _copy_from_user+0xdd/0x150 [ 74.469155][ T8822] binder_ioctl+0x102f/0x1833 [ 74.473826][ T8822] ? binder_thread_write+0x2820/0x2820 [ 74.479263][ T8822] ? tomoyo_path_number_perm+0x263/0x520 [ 74.484872][ T8822] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 74.490660][ T8822] ? userfaultfd_unmap_prep+0x4a0/0x4a0 [ 74.496191][ T8822] ? binder_thread_write+0x2820/0x2820 [ 74.501635][ T8822] do_vfs_ioctl+0xd5f/0x1380 [ 74.506207][ T8822] ? ioctl_preallocate+0x210/0x210 [ 74.511309][ T8822] ? vma_is_stack_for_current+0xd0/0xd0 [ 74.516833][ T8822] ? ksys_dup3+0x3e0/0x3e0 [ 74.521228][ T8822] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 74.527450][ T8822] ? fput_many+0x12c/0x1a0 [ 74.531844][ T8822] ? fput+0x1b/0x20 [ 74.535645][ T8822] ? tomoyo_file_ioctl+0x23/0x30 [ 74.540565][ T8822] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 74.546785][ T8822] ? security_file_ioctl+0x8d/0xc0 [ 74.551875][ T8822] ksys_ioctl+0xab/0xd0 [ 74.556016][ T8822] __x64_sys_ioctl+0x73/0xb0 [ 74.560587][ T8822] do_syscall_64+0xfd/0x680 [ 74.565075][ T8822] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 74.570942][ T8822] RIP: 0033:0x444a29 [ 74.574830][ T8822] 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 [ 74.594417][ T8822] RSP: 002b:00007fff6af60468 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 74.602814][ T8822] RAX: ffffffffffffffda RBX: 00007fff6af60470 RCX: 0000000000444a29 [ 74.610786][ T8822] RDX: 0000000020000440 RSI: 00000000c0306201 RDI: 0000000000000003 [ 74.618745][ T8822] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000401310 [ 74.626701][ T8822] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402730 [ 74.634656][ T8822] R13: 00000000004027c0 R14: 0000000000000000 R15: 0000000000000000 [ 74.642716][ T8822] Modules linked in: [ 74.646784][ T8822] ---[ end trace b53e697d112048a7 ]--- [ 74.652257][ T8822] RIP: 0010:binder_alloc_do_buffer_copy+0xd6/0x510 [ 74.658812][ T8822] 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 [ 74.678694][ T8822] RSP: 0018:ffff888098b9f4e0 EFLAGS: 00010293 [ 74.684757][ T8822] RAX: ffff88808a54a5c0 RBX: 0000000020001000 RCX: ffffffff855423cf [ 74.692769][ T8822] RDX: 0000000000000000 RSI: ffffffff855423b6 RDI: 0000000000000006 [ 74.700761][ T8822] RBP: ffff888098b9f560 R08: ffff88808a54a5c0 R09: 0000000000000008 [ 74.708940][ T8822] R10: ffffed1013173f15 R11: ffff888098b9f8af R12: 0000000000000078 [ 74.716932][ T8822] R13: 0000000000000008 R14: 00000000000000a8 R15: 0000000000000000 [ 74.724899][ T8822] FS: 0000555555aae940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 74.733869][ T8822] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.740477][ T8822] CR2: 0000000000000000 CR3: 0000000096af8000 CR4: 00000000001406f0 [ 74.749618][ T8822] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.758040][ T8822] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.766016][ T8822] Kernel panic - not syncing: Fatal exception [ 74.773132][ T8822] Kernel Offset: disabled [ 74.777542][ T8822] Rebooting in 86400 seconds..