[....] Starting enhanced syslogd: rsyslogd[ 12.577342] audit: type=1400 audit(1519872619.418:4): avc: denied { syslog } for pid=3512 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?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 '10.128.0.28' (ECDSA) to the list of known hosts. 2018/03/01 02:50:29 parsed 1 programs 2018/03/01 02:50:29 executed programs: 0 syzkaller login: [ 23.156580] IPVS: Creating netns size=2536 id=1 [ 23.177411] IPVS: Creating netns size=2536 id=2 [ 23.201420] IPVS: Creating netns size=2536 id=3 [ 23.227876] IPVS: Creating netns size=2536 id=4 [ 23.292933] IPVS: Creating netns size=2536 id=5 [ 23.318851] IPVS: Creating netns size=2536 id=6 [ 23.343131] IPVS: Creating netns size=2536 id=7 [ 23.367204] IPVS: Creating netns size=2536 id=8 [ 26.045205] kasan: CONFIG_KASAN_INLINE enabled [ 26.049956] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 26.074681] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 26.080953] Dumping ftrace buffer: [ 26.084475] (ftrace buffer empty) [ 26.088171] Modules linked in: [ 26.091486] CPU: 0 PID: 5748 Comm: syz-executor2 Not tainted 4.9.85-g6e463bb #54 [ 26.098995] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.108330] task: ffff8801bdd30000 task.stack: ffff8801bdd38000 [ 26.114371] RIP: 0010:[] [] sg_remove_scat.isra.19+0x17b/0x2d0 [ 26.123674] RSP: 0018:ffff8801bdd3fac0 EFLAGS: 00010202 [ 26.129101] RAX: 1ffff1003b1d844d RBX: ffff8801d8ec2258 RCX: 0000000000000001 [ 26.136352] RDX: 0000000000000008 RSI: 0000000000000000 RDI: ffff8801cfdc9274 [ 26.143594] RBP: ffff8801bdd3fb10 R08: 0000000000000000 R09: ffffed003a0efff1 [ 26.150835] R10: 0000000000000005 R11: ffffed003a0efff0 R12: 0000000000000001 [ 26.158076] R13: 0000000000000008 R14: 0000000000000000 R15: dffffc0000000000 [ 26.165320] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f77a5b40 [ 26.173514] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 26.179367] CR2: 0000000008452798 CR3: 00000001d00f0000 CR4: 0000000000160670 [ 26.186608] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.193847] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.201087] Stack: [ 26.203205] ffff8801d8ec2270 ffffed003b1d844b ffffed003b1d844e ffff8801d8ec2268 [ 26.211186] ffff8801cfdc9258 ffff8801d8ec2240 0000000000000000 0000000000000000 [ 26.219165] 0000000000000000 ffff8801d8ec2338 ffff8801bdd3fb50 ffffffff82669185 [ 26.227136] Call Trace: [ 26.229695] [] sg_finish_rem_req+0x2b5/0x340 [ 26.235723] [] sg_read+0xa16/0x1440 [ 26.240969] [] ? sg_proc_seq_show_debug+0xd90/0xd90 [ 26.247609] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 26.254591] [] ? sg_proc_seq_show_debug+0xd90/0xd90 [ 26.261228] [] __vfs_read+0x103/0x670 [ 26.266684] [] ? default_llseek+0x290/0x290 [ 26.272632] [] ? fsnotify+0x86/0xf30 [ 26.277966] [] ? fsnotify+0xf30/0xf30 [ 26.283389] [] ? avc_policy_seqno+0x9/0x20 [ 26.289244] [] ? selinux_file_permission+0x82/0x460 [ 26.295879] [] ? security_file_permission+0x89/0x1e0 [ 26.302609] [] ? rw_verify_area+0xe5/0x2b0 [ 26.308464] [] vfs_read+0x11e/0x380 [ 26.313708] [] SyS_read+0xd9/0x1b0 [ 26.318865] [] ? vfs_copy_file_range+0x740/0x740 [ 26.325240] [] ? do_fast_syscall_32+0xcf/0x870 [ 26.331442] [] ? vfs_copy_file_range+0x740/0x740 [ 26.337816] [] do_fast_syscall_32+0x2f5/0x870 [ 26.343928] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.350562] [] entry_SYSENTER_compat+0x90/0xa2 [ 26.356761] Code: 45 b8 eb 3e e8 c7 26 d0 fe 48 8b 45 c8 48 c1 e8 03 42 80 3c 38 00 0f 85 3a 01 00 00 4c 8b 73 10 4b 8d 14 2e 48 89 d1 48 c1 e9 03 <42> 80 3c 39 00 0f 85 0b 01 00 00 48 8b 12 49 83 c5 08 48 85 d2 [ 26.384045] RIP [] sg_remove_scat.isra.19+0x17b/0x2d0 [ 26.390978] RSP [ 26.395801] ---[ end trace b4e93c8137d86791 ]--- [ 26.400585] Kernel panic - not syncing: Fatal exception [ 26.406349] Dumping ftrace buffer: [ 26.409861] (ftrace buffer empty) [ 26.413541] Kernel Offset: disabled [ 26.417140] Rebooting in 86400 seconds..