[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 55.531088][ T26] audit: type=1800 audit(1560829489.140:25): pid=8462 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 55.567852][ T26] audit: type=1800 audit(1560829489.140:26): pid=8462 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 55.595271][ T26] audit: type=1800 audit(1560829489.150:27): pid=8462 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 '10.128.1.49' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 65.213108][ T8617] ------------[ cut here ]------------ [ 65.218713][ T8617] kernel BUG at drivers/android/binder_alloc.c:1130! [ 65.225502][ T8617] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 65.231783][ T8617] CPU: 1 PID: 8617 Comm: syz-executor406 Not tainted 5.2.0-rc5 #1 [ 65.239564][ T8617] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.249608][ T8617] RIP: 0010:binder_alloc_do_buffer_copy+0xd6/0x510 [ 65.256085][ T8617] 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 [ 65.275672][ T8617] RSP: 0018:ffff88808e96f4e0 EFLAGS: 00010293 [ 65.281716][ T8617] RAX: ffff88808c314140 RBX: 0000000020001000 RCX: ffffffff855423cf [ 65.289749][ T8617] RDX: 0000000000000000 RSI: ffffffff855423b6 RDI: 0000000000000006 [ 65.297709][ T8617] RBP: ffff88808e96f560 R08: ffff88808c314140 R09: 0000000000000008 [ 65.305675][ T8617] R10: ffffed1011d2df15 R11: ffff88808e96f8af R12: 0000000000000078 [ 65.313622][ T8617] R13: 0000000000000008 R14: 00000000000000a8 R15: 0000000000000000 [ 65.321584][ T8617] FS: 0000555555a2d940(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 65.330488][ T8617] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.337043][ T8617] CR2: 0000000000000000 CR3: 000000009ef36000 CR4: 00000000001406e0 [ 65.344992][ T8617] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.352938][ T8617] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.360883][ T8617] Call Trace: [ 65.364152][ T8617] ? find_held_lock+0x35/0x130 [ 65.368898][ T8617] binder_alloc_copy_from_buffer+0x37/0x42 [ 65.374682][ T8617] binder_validate_ptr+0xcc/0x1d0 [ 65.379686][ T8617] ? binder_get_object+0x210/0x210 [ 65.384772][ T8617] ? binder_alloc_copy_from_buffer+0x37/0x42 [ 65.390728][ T8617] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 65.396596][ T8617] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 65.402291][ T8617] ? binder_get_object+0x181/0x210 [ 65.407388][ T8617] binder_transaction+0x2c9c/0x6620 [ 65.412570][ T8617] ? binder_thread_read+0x3d00/0x3d00 [ 65.417918][ T8617] ? mark_held_locks+0xf0/0xf0 [ 65.422657][ T8617] ? mark_held_locks+0xf0/0xf0 [ 65.427397][ T8617] ? __might_fault+0x12b/0x1e0 [ 65.432146][ T8617] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 65.438360][ T8617] ? _copy_from_user+0xdd/0x150 [ 65.443212][ T8617] binder_thread_write+0x64a/0x2820 [ 65.448400][ T8617] ? mark_held_locks+0xf0/0xf0 [ 65.453138][ T8617] ? fs_reclaim_acquire.part.0+0x30/0x30 [ 65.458769][ T8617] ? binder_transaction+0x6620/0x6620 [ 65.464158][ T8617] ? __might_fault+0x12b/0x1e0 [ 65.468904][ T8617] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 65.475122][ T8617] ? _copy_from_user+0xdd/0x150 [ 65.479967][ T8617] binder_ioctl+0x102f/0x1833 [ 65.484633][ T8617] ? binder_thread_write+0x2820/0x2820 [ 65.490067][ T8617] ? tomoyo_path_number_perm+0x263/0x520 [ 65.495694][ T8617] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 65.501477][ T8617] ? smack_log+0x415/0x540 [ 65.505875][ T8617] ? binder_thread_write+0x2820/0x2820 [ 65.511311][ T8617] do_vfs_ioctl+0xd5f/0x1380 [ 65.515875][ T8617] ? ioctl_preallocate+0x210/0x210 [ 65.520957][ T8617] ? smack_file_ioctl+0x196/0x310 [ 65.525955][ T8617] ? smack_inode_rename+0x2d0/0x2d0 [ 65.531128][ T8617] ? fput+0x1b/0x20 [ 65.534914][ T8617] ? tomoyo_file_ioctl+0x23/0x30 [ 65.539825][ T8617] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 65.546041][ T8617] ? security_file_ioctl+0x8d/0xc0 [ 65.551142][ T8617] ksys_ioctl+0xab/0xd0 [ 65.555278][ T8617] __x64_sys_ioctl+0x73/0xb0 [ 65.559852][ T8617] do_syscall_64+0xfd/0x680 [ 65.564345][ T8617] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 65.577884][ T8617] RIP: 0033:0x444a29 [ 65.581769][ T8617] 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 [ 65.601352][ T8617] RSP: 002b:00007ffd50489248 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 65.609738][ T8617] RAX: ffffffffffffffda RBX: 00007ffd50489250 RCX: 0000000000444a29 [ 65.617691][ T8617] RDX: 0000000020000440 RSI: 00000000c0306201 RDI: 0000000000000003 [ 65.625638][ T8617] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000401310 [ 65.633674][ T8617] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402730 [ 65.641634][ T8617] R13: 00000000004027c0 R14: 0000000000000000 R15: 0000000000000000 [ 65.649600][ T8617] Modules linked in: [ 65.654149][ T8617] ---[ end trace 8b360c91a5745d5e ]--- [ 65.659841][ T8617] RIP: 0010:binder_alloc_do_buffer_copy+0xd6/0x510 [ 65.666321][ T8617] 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 [ 65.685951][ T8617] RSP: 0018:ffff88808e96f4e0 EFLAGS: 00010293 [ 65.692031][ T8617] RAX: ffff88808c314140 RBX: 0000000020001000 RCX: ffffffff855423cf [ 65.700014][ T8617] RDX: 0000000000000000 RSI: ffffffff855423b6 RDI: 0000000000000006 [ 65.708004][ T8617] RBP: ffff88808e96f560 R08: ffff88808c314140 R09: 0000000000000008 [ 65.715956][ T8617] R10: ffffed1011d2df15 R11: ffff88808e96f8af R12: 0000000000000078 [ 65.723952][ T8617] R13: 0000000000000008 R14: 00000000000000a8 R15: 0000000000000000 [ 65.731955][ T8617] FS: 0000555555a2d940(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 65.740910][ T8617] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.747483][ T8617] CR2: 0000000000000000 CR3: 000000009ef36000 CR4: 00000000001406e0 [ 65.755470][ T8617] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.763643][ T8617] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.771632][ T8617] Kernel panic - not syncing: Fatal exception [ 65.779106][ T8617] Kernel Offset: disabled [ 65.783431][ T8617] Rebooting in 86400 seconds..