[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 60.122850][ T26] audit: type=1800 audit(1560808994.355:25): pid=8436 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 60.166961][ T26] audit: type=1800 audit(1560808994.365:26): pid=8436 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 60.214188][ T26] audit: type=1800 audit(1560808994.365:27): pid=8436 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 '10.128.0.146' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 70.514194][ T8588] ------------[ cut here ]------------ [ 70.519684][ T8588] kernel BUG at drivers/android/binder_alloc.c:1130! [ 70.526474][ T8588] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 70.532537][ T8588] CPU: 0 PID: 8588 Comm: syz-executor235 Not tainted 5.2.0-rc5 #54 [ 70.540552][ T8588] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.550640][ T8588] RIP: 0010:binder_alloc_do_buffer_copy+0xd6/0x510 [ 70.557230][ T8588] 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 [ 70.576838][ T8588] RSP: 0018:ffff88808234f4e0 EFLAGS: 00010293 [ 70.582906][ T8588] RAX: ffff88808c754400 RBX: 0000000020001000 RCX: ffffffff855423cf [ 70.591042][ T8588] RDX: 0000000000000000 RSI: ffffffff855423b6 RDI: 0000000000000006 [ 70.599005][ T8588] RBP: ffff88808234f560 R08: ffff88808c754400 R09: 0000000000000008 [ 70.606960][ T8588] R10: ffffed1010469f15 R11: ffff88808234f8af R12: 0000000000000058 [ 70.615274][ T8588] R13: 0000000000000008 R14: 0000000000000070 R15: 0000000000000000 [ 70.623328][ T8588] FS: 00005555564e7940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 70.632419][ T8588] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.638992][ T8588] CR2: 0000000000000000 CR3: 0000000091aae000 CR4: 00000000001406f0 [ 70.646964][ T8588] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.654939][ T8588] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.662983][ T8588] Call Trace: [ 70.666263][ T8588] ? find_held_lock+0x35/0x130 [ 70.671121][ T8588] binder_alloc_copy_from_buffer+0x37/0x42 [ 70.676918][ T8588] binder_validate_ptr+0xcc/0x1d0 [ 70.681925][ T8588] ? binder_get_object+0x210/0x210 [ 70.687027][ T8588] ? binder_alloc_copy_from_buffer+0x37/0x42 [ 70.693079][ T8588] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 70.698961][ T8588] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 70.704674][ T8588] ? binder_get_object+0x181/0x210 [ 70.709768][ T8588] binder_transaction+0x2c9c/0x6620 [ 70.714951][ T8588] ? binder_thread_read+0x3d00/0x3d00 [ 70.720311][ T8588] ? mark_held_locks+0xf0/0xf0 [ 70.725077][ T8588] ? mark_held_locks+0xf0/0xf0 [ 70.729834][ T8588] ? __might_fault+0x12b/0x1e0 [ 70.734585][ T8588] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 70.740808][ T8588] ? _copy_from_user+0xdd/0x150 [ 70.745783][ T8588] binder_thread_write+0x64a/0x2820 [ 70.751133][ T8588] ? mark_held_locks+0xf0/0xf0 [ 70.755889][ T8588] ? fs_reclaim_acquire.part.0+0x30/0x30 [ 70.761515][ T8588] ? binder_transaction+0x6620/0x6620 [ 70.766873][ T8588] ? __might_fault+0x12b/0x1e0 [ 70.771625][ T8588] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 70.777867][ T8588] ? _copy_from_user+0xdd/0x150 [ 70.782703][ T8588] binder_ioctl+0x102f/0x1833 [ 70.787572][ T8588] ? binder_thread_write+0x2820/0x2820 [ 70.793012][ T8588] ? tomoyo_path_number_perm+0x263/0x520 [ 70.798805][ T8588] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 70.804614][ T8588] ? userfaultfd_unmap_prep+0x4a0/0x4a0 [ 70.810151][ T8588] ? binder_thread_write+0x2820/0x2820 [ 70.815605][ T8588] do_vfs_ioctl+0xd5f/0x1380 [ 70.820192][ T8588] ? ioctl_preallocate+0x210/0x210 [ 70.825306][ T8588] ? vma_is_stack_for_current+0xd0/0xd0 [ 70.830838][ T8588] ? ksys_dup3+0x3e0/0x3e0 [ 70.835252][ T8588] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 70.841496][ T8588] ? fput_many+0x12c/0x1a0 [ 70.845979][ T8588] ? fput+0x1b/0x20 [ 70.849788][ T8588] ? tomoyo_file_ioctl+0x23/0x30 [ 70.855714][ T8588] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 70.861957][ T8588] ? security_file_ioctl+0x8d/0xc0 [ 70.867056][ T8588] ksys_ioctl+0xab/0xd0 [ 70.871190][ T8588] __x64_sys_ioctl+0x73/0xb0 [ 70.875789][ T8588] do_syscall_64+0xfd/0x680 [ 70.880444][ T8588] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 70.886398][ T8588] RIP: 0033:0x444a39 [ 70.890288][ T8588] 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 [ 70.909886][ T8588] RSP: 002b:00007ffe6ccaa688 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 70.918365][ T8588] RAX: ffffffffffffffda RBX: 00007ffe6ccaa690 RCX: 0000000000444a39 [ 70.926319][ T8588] RDX: 0000000020000440 RSI: 00000000c0306201 RDI: 0000000000000003 [ 70.938452][ T8588] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000401320 [ 70.946412][ T8588] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402740 [ 70.954560][ T8588] R13: 00000000004027d0 R14: 0000000000000000 R15: 0000000000000000 [ 70.962522][ T8588] Modules linked in: [ 70.967501][ T8588] ---[ end trace 9ded0f389158af84 ]--- [ 70.973080][ T8588] RIP: 0010:binder_alloc_do_buffer_copy+0xd6/0x510 [ 70.979740][ T8588] 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 [ 70.999383][ T8588] RSP: 0018:ffff88808234f4e0 EFLAGS: 00010293 [ 71.005583][ T8588] RAX: ffff88808c754400 RBX: 0000000020001000 RCX: ffffffff855423cf [ 71.013610][ T8588] RDX: 0000000000000000 RSI: ffffffff855423b6 RDI: 0000000000000006 [ 71.021736][ T8588] RBP: ffff88808234f560 R08: ffff88808c754400 R09: 0000000000000008 [ 71.029764][ T8588] R10: ffffed1010469f15 R11: ffff88808234f8af R12: 0000000000000058 [ 71.037848][ T8588] R13: 0000000000000008 R14: 0000000000000070 R15: 0000000000000000 [ 71.045829][ T8588] FS: 00005555564e7940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 71.054789][ T8588] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.061388][ T8588] CR2: 0000000000000000 CR3: 0000000091aae000 CR4: 00000000001406f0 [ 71.069367][ T8588] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.077458][ T8588] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.085417][ T8588] Kernel panic - not syncing: Fatal exception [ 71.093132][ T8588] Kernel Offset: disabled [ 71.097464][ T8588] Rebooting in 86400 seconds..