[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 68.643895][ T26] audit: type=1800 audit(1560827914.599:25): pid=9144 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 68.684571][ T26] audit: type=1800 audit(1560827914.599:26): pid=9144 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 68.714839][ T26] audit: type=1800 audit(1560827914.599:27): pid=9144 uid=0 auid=4294967295 ses=4294967295 subj=_ 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 '10.128.0.110' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 79.426073][ T9297] ------------[ cut here ]------------ [ 79.431692][ T9297] kernel BUG at drivers/android/binder_alloc.c:1130! [ 79.438677][ T9297] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 79.444766][ T9297] CPU: 0 PID: 9297 Comm: syz-executor050 Not tainted 5.2.0-rc5 #1 [ 79.452619][ T9297] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.462728][ T9297] RIP: 0010:binder_alloc_do_buffer_copy+0xd6/0x510 [ 79.469233][ T9297] 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 [ 79.488904][ T9297] RSP: 0018:ffff8880911df4e0 EFLAGS: 00010293 [ 79.495085][ T9297] RAX: ffff8880a0e84400 RBX: 0000000020001000 RCX: ffffffff855423cf [ 79.503062][ T9297] RDX: 0000000000000000 RSI: ffffffff855423b6 RDI: 0000000000000006 [ 79.511039][ T9297] RBP: ffff8880911df560 R08: ffff8880a0e84400 R09: 0000000000000008 [ 79.519017][ T9297] R10: ffffed101223bf15 R11: ffff8880911df8af R12: 0000000000000078 [ 79.526982][ T9297] R13: 0000000000000008 R14: 00000000000000e8 R15: 0000000000000000 [ 79.534950][ T9297] FS: 0000555556fd1940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 79.543966][ T9297] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.550550][ T9297] CR2: 0000000000000000 CR3: 00000000a83c1000 CR4: 00000000001406f0 [ 79.558549][ T9297] Call Trace: [ 79.561902][ T9297] ? find_held_lock+0x35/0x130 [ 79.566674][ T9297] binder_alloc_copy_from_buffer+0x37/0x42 [ 79.572493][ T9297] binder_validate_ptr+0xcc/0x1d0 [ 79.577636][ T9297] ? binder_get_object+0x210/0x210 [ 79.582752][ T9297] ? binder_alloc_copy_from_buffer+0x37/0x42 [ 79.588761][ T9297] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 79.594662][ T9297] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 79.600390][ T9297] ? binder_get_object+0x181/0x210 [ 79.605511][ T9297] binder_transaction+0x2c9c/0x6620 [ 79.610727][ T9297] ? binder_thread_read+0x3d00/0x3d00 [ 79.616106][ T9297] ? mark_held_locks+0xf0/0xf0 [ 79.620885][ T9297] ? mark_held_locks+0xf0/0xf0 [ 79.625676][ T9297] ? __might_fault+0x12b/0x1e0 [ 79.630457][ T9297] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 79.636711][ T9297] ? _copy_from_user+0xdd/0x150 [ 79.641576][ T9297] binder_thread_write+0x64a/0x2820 [ 79.646786][ T9297] ? mark_held_locks+0xf0/0xf0 [ 79.651582][ T9297] ? fs_reclaim_acquire.part.0+0x30/0x30 [ 79.657221][ T9297] ? binder_transaction+0x6620/0x6620 [ 79.662636][ T9297] ? __might_fault+0x12b/0x1e0 [ 79.667419][ T9297] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 79.673664][ T9297] ? _copy_from_user+0xdd/0x150 [ 79.678536][ T9297] binder_ioctl+0x102f/0x1833 [ 79.683229][ T9297] ? binder_thread_write+0x2820/0x2820 [ 79.688715][ T9297] ? tomoyo_path_number_perm+0x263/0x520 [ 79.694358][ T9297] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 79.700168][ T9297] ? smack_log+0x415/0x540 [ 79.704618][ T9297] ? binder_thread_write+0x2820/0x2820 [ 79.710100][ T9297] do_vfs_ioctl+0xd5f/0x1380 [ 79.714696][ T9297] ? ioctl_preallocate+0x210/0x210 [ 79.719808][ T9297] ? smack_file_ioctl+0x196/0x310 [ 79.724856][ T9297] ? smack_inode_rename+0x2d0/0x2d0 [ 79.730060][ T9297] ? fput+0x1b/0x20 [ 79.733881][ T9297] ? tomoyo_file_ioctl+0x23/0x30 [ 79.738827][ T9297] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 79.745072][ T9297] ? security_file_ioctl+0x8d/0xc0 [ 79.750273][ T9297] ksys_ioctl+0xab/0xd0 [ 79.760305][ T9297] __x64_sys_ioctl+0x73/0xb0 [ 79.764906][ T9297] do_syscall_64+0xfd/0x680 [ 79.769436][ T9297] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 79.775330][ T9297] RIP: 0033:0x444a29 [ 79.779396][ T9297] 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 [ 79.798999][ T9297] RSP: 002b:00007ffe78200b58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 79.807423][ T9297] RAX: ffffffffffffffda RBX: 00007ffe78200b60 RCX: 0000000000444a29 [ 79.815387][ T9297] RDX: 0000000020000440 RSI: 00000000c0306201 RDI: 0000000000000003 [ 79.823369][ T9297] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000401310 [ 79.831343][ T9297] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402730 [ 79.839320][ T9297] R13: 00000000004027c0 R14: 0000000000000000 R15: 0000000000000000 [ 79.847298][ T9297] Modules linked in: [ 79.852110][ T9297] ---[ end trace 567c9037ef43ca2c ]--- [ 79.857752][ T9297] RIP: 0010:binder_alloc_do_buffer_copy+0xd6/0x510 [ 79.864298][ T9297] 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 [ 79.886272][ T9297] RSP: 0018:ffff8880911df4e0 EFLAGS: 00010293 [ 79.892404][ T9297] RAX: ffff8880a0e84400 RBX: 0000000020001000 RCX: ffffffff855423cf [ 79.900465][ T9297] RDX: 0000000000000000 RSI: ffffffff855423b6 RDI: 0000000000000006 [ 79.908510][ T9297] RBP: ffff8880911df560 R08: ffff8880a0e84400 R09: 0000000000000008 [ 79.916544][ T9297] R10: ffffed101223bf15 R11: ffff8880911df8af R12: 0000000000000078 [ 79.924597][ T9297] R13: 0000000000000008 R14: 00000000000000e8 R15: 0000000000000000 [ 79.932624][ T9297] FS: 0000555556fd1940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 79.941771][ T9297] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.948490][ T9297] CR2: 0000000000000000 CR3: 00000000a83c1000 CR4: 00000000001406f0 [ 79.956535][ T9297] Kernel panic - not syncing: Fatal exception [ 79.963815][ T9297] Kernel Offset: disabled [ 79.968353][ T9297] Rebooting in 86400 seconds..