INIT: Entering runlevel: 2 [[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added 'ci-android-49-kasan-gce-6,10.128.0.50' (ECDSA) to the list of known hosts. 2017/12/02 01:57:56 parsed 1 programs 2017/12/02 01:57:56 executed programs: 0 syzkaller login: [ 31.536764] kasan: CONFIG_KASAN_INLINE enabled [ 31.537463] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 31.538464] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 31.539294] Dumping ftrace buffer: [ 31.539769] (ftrace buffer empty) [ 31.540263] Modules linked in: [ 31.540732] CPU: 1 PID: 3277 Comm: syz-executor0 Not tainted 4.9.66-gb763480 #103 [ 31.541757] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.542978] task: ffff8801cdcbe000 task.stack: ffff8801cfe88000 [ 31.543791] RIP: 0010:[] [] sidtab_search_core+0x6a/0x320 [ 31.544975] RSP: 0018:ffff8801cfe8f490 EFLAGS: 00010202 [ 31.545692] RAX: dffffc0000000000 RBX: 0000000000000008 RCX: 1ffff10039fd1e68 [ 31.546672] RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffffffff8593e620 [ 31.547638] RBP: ffff8801cfe8f4c0 R08: ffffffff85390610 R09: ffffffff83a5e040 [ 31.548607] R10: 0000000000000001 R11: ffff8801cdcbe000 R12: 0000000000000001 [ 31.549556] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801cea13ab0 [ 31.550510] FS: 00007f41c9cad700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 31.551600] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.552372] CR2: 00000000004d5638 CR3: 00000001cc0f0000 CR4: 00000000001406e0 [ 31.553335] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.554289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.555241] Stack: [ 31.555536] 0000000000000001 ffffffff8593e620 0000000000000001 0000000000000001 [ 31.556659] 0000000000000001 ffff8801cea13ab0 ffff8801cfe8f4e0 ffffffff81c0587f [ 31.563413] dffffc0000000000 ffff8801cea13ab4 ffff8801cfe8f608 ffffffff81c239a2 [ 31.571358] Call Trace: [ 31.573910] [] sidtab_search+0x1f/0x30 [ 31.579412] [] security_bounded_transition+0xb2/0x3a0 [ 31.586216] [] ? security_validate_transition+0x60/0x60 [ 31.593195] [] ? memcpy+0x45/0x50 [ 31.598262] [] ? kmemdup+0x44/0x50 [ 31.603417] [] ? selinux_cred_prepare+0x78/0xa0 [ 31.609702] [] ? current_is_single_threaded+0x85/0x4e0 [ 31.616593] [] ? security_prepare_creds+0x89/0xb0 [ 31.623049] [] selinux_setprocattr+0x8b0/0xa80 [ 31.629245] [] ? proc_pid_attr_write+0x148/0x270 [ 31.635615] [] ? ptrace_parent_sid+0x400/0x400 [ 31.641812] [] ? mutex_lock_nested+0x870/0x870 [ 31.648008] [] security_setprocattr+0x8d/0xc0 [ 31.654118] [] proc_pid_attr_write+0x1bd/0x270 [ 31.660313] [] ? proc_coredump_filter_read+0x1e0/0x1e0 [ 31.667203] [] __vfs_write+0x103/0x680 [ 31.672705] [] ? do_iter_readv_writev+0x400/0x400 [ 31.679164] [] ? iov_iter_advance+0x216/0xd70 [ 31.685271] [] ? kasan_slab_free+0x89/0xc0 [ 31.691121] [] ? __lock_is_held+0xa1/0xf0 [ 31.696880] [] __kernel_write+0xf0/0x340 [ 31.702553] [] ? __might_sleep+0x95/0x1a0 [ 31.708315] [] write_pipe_buf+0x159/0x1f0 [ 31.714074] [] ? __lock_is_held+0xa1/0xf0 [ 31.719833] [] ? default_file_splice_read+0x7a0/0x7a0 [ 31.726636] [] ? splice_from_pipe_next.part.10+0x22e/0x2f0 [ 31.733872] [] __splice_from_pipe+0x323/0x730 [ 31.739979] [] ? default_file_splice_read+0x7a0/0x7a0 [ 31.746781] [] splice_from_pipe+0xf9/0x160 [ 31.752629] [] ? default_file_splice_read+0x7a0/0x7a0 [ 31.759431] [] ? splice_shrink_spd+0xb0/0xb0 [ 31.765453] [] default_file_splice_write+0x40/0x90 [ 31.771996] [] ? generic_splice_sendpage+0x50/0x50 [ 31.778544] [] direct_splice_actor+0x125/0x180 [ 31.784752] [] splice_direct_to_actor+0x2cc/0x800 [ 31.791207] [] ? generic_pipe_buf_nosteal+0x10/0x10 [ 31.797837] [] ? do_splice_to+0x160/0x160 [ 31.803599] [] ? security_file_permission+0x89/0x1e0 [ 31.810315] [] ? rw_verify_area+0xe5/0x2b0 [ 31.816166] [] do_splice_direct+0x1a7/0x270 [ 31.822101] [] ? splice_direct_to_actor+0x800/0x800 [ 31.828731] [] ? rcu_sync_lockdep_assert+0x6d/0xb0 [ 31.835276] [] ? __sb_start_write+0x14a/0x310 [ 31.841384] [] do_sendfile+0x54b/0xd30 [ 31.846884] [] ? do_compat_pwritev64+0x100/0x100 [ 31.853255] [] ? __might_fault+0x114/0x1d0 [ 31.859101] [] SyS_sendfile64+0xd1/0x160 [ 31.864776] [] ? SyS_sendfile+0x160/0x160 [ 31.870542] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 31.877353] [] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 31.883898] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 31.890437] Code: ea 03 41 83 e4 7f 80 3c 02 00 0f 85 7d 02 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 33 4d 63 e4 4b 8d 1c e6 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 41 02 00 00 48 8b 1b 48 85 db 0f 84 8b 00 00 [ 31.916690] RIP [] sidtab_search_core+0x6a/0x320 [ 31.923174] RSP [ 31.926829] ---[ end trace 2362064a4d68e983 ]--- [ 31.931561] Kernel panic - not syncing: Fatal exception [ 31.937263] Dumping ftrace buffer: [ 31.940777] (ftrace buffer empty) [ 31.944456] Kernel Offset: disabled [ 31.948049] Rebooting in 86400 seconds..