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-7,10.128.0.57' (ECDSA) to the list of known hosts. 2017/12/02 01:35:59 parsed 1 programs 2017/12/02 01:35:59 executed programs: 0 syzkaller login: [ 43.240993] kasan: CONFIG_KASAN_INLINE enabled [ 43.241700] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 43.242757] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 43.243576] Dumping ftrace buffer: [ 43.244049] (ftrace buffer empty) [ 43.244542] Modules linked in: [ 43.245008] CPU: 1 PID: 3295 Comm: syz-executor0 Not tainted 4.9.66-gb763480 #103 [ 43.246001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.247218] task: ffff8801cdbce000 task.stack: ffff8801ca9a0000 [ 43.248012] RIP: 0010:[] [] sidtab_search_core+0x6a/0x320 [ 43.249235] RSP: 0018:ffff8801ca9a7490 EFLAGS: 00010202 [ 43.249952] RAX: dffffc0000000000 RBX: 0000000000000008 RCX: 1ffff10039534e68 [ 43.250903] RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffffffff8593e620 [ 43.251852] RBP: ffff8801ca9a74c0 R08: ffffffff85390e80 R09: ffffffff83a5e040 [ 43.252802] R10: 0000000000000001 R11: ffff8801cdbce000 R12: 0000000000000001 [ 43.253767] R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801d4ca8870 [ 43.254729] FS: 00007fe31c3c3700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 43.255813] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.256596] CR2: 00000000004d5638 CR3: 00000001ceac5000 CR4: 00000000001406e0 [ 43.257573] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.258540] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.259517] Stack: [ 43.259813] 0000000000000001 ffffffff8593e620 0000000000000001 0000000000000001 [ 43.261023] 0000000000000001 ffff8801d4ca8870 ffff8801ca9a74e0 ffffffff81c0587f [ 43.266471] dffffc0000000000 ffff8801d4ca8874 ffff8801ca9a7608 ffffffff81c239a2 [ 43.274421] Call Trace: [ 43.276971] [] sidtab_search+0x1f/0x30 [ 43.282474] [] security_bounded_transition+0xb2/0x3a0 [ 43.289280] [] ? security_validate_transition+0x60/0x60 [ 43.296259] [] ? memcpy+0x45/0x50 [ 43.301334] [] ? kmemdup+0x44/0x50 [ 43.306486] [] ? selinux_cred_prepare+0x78/0xa0 [ 43.312768] [] ? current_is_single_threaded+0x85/0x4e0 [ 43.319655] [] ? security_prepare_creds+0x89/0xb0 [ 43.326110] [] selinux_setprocattr+0x8b0/0xa80 [ 43.332305] [] ? proc_pid_attr_write+0x148/0x270 [ 43.338671] [] ? ptrace_parent_sid+0x400/0x400 [ 43.344868] [] ? mutex_lock_nested+0x870/0x870 [ 43.351060] [] security_setprocattr+0x8d/0xc0 [ 43.357165] [] proc_pid_attr_write+0x1bd/0x270 [ 43.363358] [] ? proc_coredump_filter_read+0x1e0/0x1e0 [ 43.370247] [] __vfs_write+0x103/0x680 [ 43.375744] [] ? do_iter_readv_writev+0x400/0x400 [ 43.382202] [] ? iov_iter_advance+0x216/0xd70 [ 43.388309] [] ? kasan_slab_free+0x89/0xc0 [ 43.394158] [] ? __lock_is_held+0xa1/0xf0 [ 43.399919] [] __kernel_write+0xf0/0x340 [ 43.405592] [] ? __might_sleep+0x95/0x1a0 [ 43.411354] [] write_pipe_buf+0x159/0x1f0 [ 43.417116] [] ? __lock_is_held+0xa1/0xf0 [ 43.422877] [] ? default_file_splice_read+0x7a0/0x7a0 [ 43.429679] [] ? splice_from_pipe_next.part.10+0x22e/0x2f0 [ 43.436913] [] __splice_from_pipe+0x323/0x730 [ 43.443020] [] ? default_file_splice_read+0x7a0/0x7a0 [ 43.449823] [] splice_from_pipe+0xf9/0x160 [ 43.455670] [] ? default_file_splice_read+0x7a0/0x7a0 [ 43.462471] [] ? splice_shrink_spd+0xb0/0xb0 [ 43.468492] [] default_file_splice_write+0x40/0x90 [ 43.475032] [] ? generic_splice_sendpage+0x50/0x50 [ 43.481573] [] direct_splice_actor+0x125/0x180 [ 43.487767] [] splice_direct_to_actor+0x2cc/0x800 [ 43.494226] [] ? generic_pipe_buf_nosteal+0x10/0x10 [ 43.500853] [] ? do_splice_to+0x160/0x160 [ 43.506614] [] ? security_file_permission+0x89/0x1e0 [ 43.513329] [] ? rw_verify_area+0xe5/0x2b0 [ 43.519174] [] do_splice_direct+0x1a7/0x270 [ 43.525107] [] ? splice_direct_to_actor+0x800/0x800 [ 43.531736] [] ? rcu_sync_lockdep_assert+0x6d/0xb0 [ 43.538276] [] ? __sb_start_write+0x14a/0x310 [ 43.544384] [] do_sendfile+0x54b/0xd30 [ 43.549885] [] ? do_compat_pwritev64+0x100/0x100 [ 43.556255] [] ? __might_fault+0x114/0x1d0 [ 43.562105] [] SyS_sendfile64+0xd1/0x160 [ 43.567778] [] ? SyS_sendfile+0x160/0x160 [ 43.573539] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 43.580341] [] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 43.586885] [] entry_SYSCALL_64_fastpath+0x23/0xc6 [ 43.593423] 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 [ 43.619713] RIP [] sidtab_search_core+0x6a/0x320 [ 43.626197] RSP [ 43.629924] ---[ end trace 3a8c5b6c04563849 ]--- [ 43.634648] Kernel panic - not syncing: Fatal exception [ 43.640329] Dumping ftrace buffer: [ 43.643833] (ftrace buffer empty) [ 43.647510] Kernel Offset: disabled [ 43.651105] Rebooting in 86400 seconds..