[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 69.908933][ T27] audit: type=1800 audit(1560825839.737:25): pid=8721 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 69.937074][ T27] audit: type=1800 audit(1560825839.737:26): pid=8721 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 69.966991][ T27] audit: type=1800 audit(1560825839.737:27): pid=8721 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 '10.128.0.155' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 77.884872][ T8874] ------------[ cut here ]------------ [ 77.890361][ T8874] kernel BUG at drivers/android/binder_alloc.c:1130! [ 77.897141][ T8874] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 77.903224][ T8874] CPU: 0 PID: 8874 Comm: syz-executor010 Not tainted 5.2.0-rc5 #35 [ 77.911110][ T8874] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.921353][ T8874] RIP: 0010:binder_alloc_do_buffer_copy+0xd6/0x510 [ 77.927945][ T8874] 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 [ 77.947624][ T8874] RSP: 0018:ffff88808eb2f4e0 EFLAGS: 00010293 [ 77.953673][ T8874] RAX: ffff8880a899a680 RBX: 0000000020001000 RCX: ffffffff855423cf [ 77.961631][ T8874] RDX: 0000000000000000 RSI: ffffffff855423b6 RDI: 0000000000000006 [ 77.969814][ T8874] RBP: ffff88808eb2f560 R08: ffff8880a899a680 R09: 0000000000000008 [ 77.977791][ T8874] R10: ffffed1011d65f15 R11: ffff88808eb2f8af R12: 0000000000000078 [ 77.985749][ T8874] R13: 0000000000000008 R14: 00000000000000a8 R15: 0000000000000000 [ 77.993706][ T8874] FS: 0000555556cd7940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 78.002724][ T8874] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.009373][ T8874] CR2: 0000000000000000 CR3: 00000000a046c000 CR4: 00000000001406f0 [ 78.017328][ T8874] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.025302][ T8874] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.033262][ T8874] Call Trace: [ 78.036591][ T8874] ? find_held_lock+0x35/0x130 [ 78.041346][ T8874] binder_alloc_copy_from_buffer+0x37/0x42 [ 78.047153][ T8874] binder_validate_ptr+0xcc/0x1d0 [ 78.052165][ T8874] ? binder_get_object+0x210/0x210 [ 78.057382][ T8874] ? binder_alloc_copy_from_buffer+0x37/0x42 [ 78.063360][ T8874] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 78.069249][ T8874] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 78.074970][ T8874] ? binder_get_object+0x181/0x210 [ 78.080064][ T8874] binder_transaction+0x2c9c/0x6620 [ 78.085338][ T8874] ? binder_thread_read+0x3d00/0x3d00 [ 78.090717][ T8874] ? mark_held_locks+0xf0/0xf0 [ 78.095654][ T8874] ? mark_held_locks+0xf0/0xf0 [ 78.100428][ T8874] ? __might_fault+0x12b/0x1e0 [ 78.105211][ T8874] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 78.111466][ T8874] ? _copy_from_user+0xdd/0x150 [ 78.116296][ T8874] binder_thread_write+0x64a/0x2820 [ 78.121474][ T8874] ? mark_held_locks+0xf0/0xf0 [ 78.126235][ T8874] ? fs_reclaim_acquire.part.0+0x30/0x30 [ 78.131850][ T8874] ? binder_transaction+0x6620/0x6620 [ 78.137227][ T8874] ? __might_fault+0x12b/0x1e0 [ 78.142240][ T8874] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 78.148480][ T8874] ? _copy_from_user+0xdd/0x150 [ 78.153400][ T8874] binder_ioctl+0x102f/0x1833 [ 78.158239][ T8874] ? binder_thread_write+0x2820/0x2820 [ 78.163726][ T8874] ? tomoyo_path_number_perm+0x263/0x520 [ 78.169366][ T8874] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 78.175203][ T8874] ? userfaultfd_unmap_prep+0x4a0/0x4a0 [ 78.180762][ T8874] ? binder_thread_write+0x2820/0x2820 [ 78.186410][ T8874] do_vfs_ioctl+0xd5f/0x1380 [ 78.190992][ T8874] ? ioctl_preallocate+0x210/0x210 [ 78.196107][ T8874] ? vma_is_stack_for_current+0xd0/0xd0 [ 78.201642][ T8874] ? ksys_dup3+0x3e0/0x3e0 [ 78.206064][ T8874] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 78.212315][ T8874] ? fput_many+0x12c/0x1a0 [ 78.216715][ T8874] ? fput+0x1b/0x20 [ 78.220506][ T8874] ? tomoyo_file_ioctl+0x23/0x30 [ 78.225424][ T8874] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 78.231668][ T8874] ? security_file_ioctl+0x8d/0xc0 [ 78.236762][ T8874] ksys_ioctl+0xab/0xd0 [ 78.240898][ T8874] __x64_sys_ioctl+0x73/0xb0 [ 78.245485][ T8874] do_syscall_64+0xfd/0x680 [ 78.249995][ T8874] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.255876][ T8874] RIP: 0033:0x444a29 [ 78.259751][ T8874] 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 [ 78.279528][ T8874] RSP: 002b:00007fffa2ce3028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 78.287988][ T8874] RAX: ffffffffffffffda RBX: 00007fffa2ce3030 RCX: 0000000000444a29 [ 78.295941][ T8874] RDX: 0000000020000440 RSI: 00000000c0306201 RDI: 0000000000000003 [ 78.303892][ T8874] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000401310 [ 78.311845][ T8874] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402730 [ 78.319808][ T8874] R13: 00000000004027c0 R14: 0000000000000000 R15: 0000000000000000 [ 78.327788][ T8874] Modules linked in: [ 78.332810][ T8874] ---[ end trace 3943e255e2c9f2b4 ]--- [ 78.338437][ T8874] RIP: 0010:binder_alloc_do_buffer_copy+0xd6/0x510 [ 78.344923][ T8874] 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 [ 78.364560][ T8874] RSP: 0018:ffff88808eb2f4e0 EFLAGS: 00010293 [ 78.370643][ T8874] RAX: ffff8880a899a680 RBX: 0000000020001000 RCX: ffffffff855423cf [ 78.378641][ T8874] RDX: 0000000000000000 RSI: ffffffff855423b6 RDI: 0000000000000006 [ 78.386610][ T8874] RBP: ffff88808eb2f560 R08: ffff8880a899a680 R09: 0000000000000008 [ 78.394624][ T8874] R10: ffffed1011d65f15 R11: ffff88808eb2f8af R12: 0000000000000078 [ 78.402618][ T8874] R13: 0000000000000008 R14: 00000000000000a8 R15: 0000000000000000 [ 78.410630][ T8874] FS: 0000555556cd7940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 78.419566][ T8874] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.426233][ T8874] CR2: 0000000000000000 CR3: 00000000a046c000 CR4: 00000000001406f0 [ 78.434249][ T8874] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.442255][ T8874] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.450245][ T8874] Kernel panic - not syncing: Fatal exception [ 78.457780][ T8874] Kernel Offset: disabled [ 78.462101][ T8874] Rebooting in 86400 seconds..