[....] Starting enhanced syslogd: rsyslogd[ 10.343891] audit: type=1400 audit(1514649605.264:4): avc: denied { syslog } for pid=3169 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 '10.128.0.31' (ECDSA) to the list of known hosts. net.ipv6.conf.syz5.accept_dad = 0 net.ipv6.conf.syz5.router_solicitations = 0 syzkaller login: [ 20.052989] IPVS: Creating netns size=2536 id=1 net.ipv6.conf.syz6.accept_dad = 0 executing program net.ipv6.conf.syz6.router_solicitations = 0 [ 20.080439] IPVS: Creating netns size=2536 id=2 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program net.ipv6.conf.syz0.accept_dad = 0 executing program executing program net.ipv6.conf.syz0.router_solicitations = 0 executing program [ 20.106667] sg_write: data in/out 327644/96 bytes for SCSI command 0x0-- guessing data in; [ 20.106667] program syzkaller222568 not setting count and/or reply_len properly [ 20.123343] IPVS: Creating netns size=2536 id=3 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program net.ipv6.conf.syz2.accept_dad = 0 executing program executing program executing program [ 20.166918] IPVS: Creating netns size=2536 id=4 executing program executing program executing program executing program executing program executing program executing program executing program net.ipv6.conf.syz2.router_solicitations = 0 executing program executing program executing program executing program executing program net.ipv6.conf.syz1.accept_dad = 0 executing program executing program executing program [ 20.213718] IPVS: Creating netns size=2536 id=5 executing program executing program net.ipv6.conf.syz1.router_solicitations = 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 20.260497] IPVS: Creating netns size=2536 id=6 executing program net.ipv6.conf.syz3.accept_dad = 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program net.ipv6.conf.syz3.router_solicitations = 0 executing program executing program [ 20.311997] IPVS: Creating netns size=2536 id=7 executing program executing program executing program executing program net.ipv6.conf.syz4.accept_dad = 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program net.ipv6.conf.syz4.router_solicitations = 0 executing program executing program executing program executing program [ 20.369601] IPVS: Creating netns size=2536 id=8 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program net.ipv6.conf.syz7.accept_dad = 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program net.ipv6.conf.syz7.router_solicitations = 0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 23.685299] kasan: CONFIG_KASAN_INLINE enabled [ 23.690101] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 23.701650] kasan: CONFIG_KASAN_INLINE enabled [ 23.701653] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 23.701661] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 23.701666] Dumping ftrace buffer: [ 23.701670] (ftrace buffer empty) [ 23.701674] Modules linked in: [ 23.701681] CPU: 1 PID: 3494 Comm: syzkaller222568 Not tainted 4.9.73-gf3f3457 #11 [ 23.701685] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.701689] task: ffff8801c6454800 task.stack: ffff8801bf8f0000 [ 23.701704] RIP: 0010:[] [] __free_pages+0x21/0x80 [ 23.701708] RSP: 0018:ffff8801bf8f7a50 EFLAGS: 00010a07 [ 23.701712] RAX: dffffc0000000000 RBX: dead4ead00000000 RCX: ffffffff82664f9b [ 23.701715] RDX: 1bd5a9d5a0000003 RSI: 000000000000000a RDI: dead4ead0000001c [ 23.701718] RBP: ffff8801bf8f7a60 R08: 0000000000000001 R09: 0000000000000000 [ 23.701721] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000004 [ 23.701725] R13: 0000000000000020 R14: ffff8801bff52100 R15: dffffc0000000000 [ 23.701730] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f77cdb40 [ 23.701734] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 23.701737] CR2: 000000002060302a CR3: 00000001cbe3a000 CR4: 00000000001406e0 [ 23.701744] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.701747] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.701748] Stack: [ 23.701758] ffff8801c6454800 ffff8801bff52258 ffff8801bf8f7ac0 ffffffff82664fc1 [ 23.701767] ffff8801bff52270 ffffed0037fea44b ffffed0037fea44e ffff8801bff52268 [ 23.701775] dead4ead00000000 ffff8801bff52240 0000000000000000 0000000000000000 [ 23.701776] Call Trace: [ 23.701786] [] sg_remove_scat.isra.19+0x1c1/0x2d0 [ 23.701793] [] sg_finish_rem_req+0x2b5/0x340 [ 23.701798] [] sg_new_read.isra.20+0x39/0x3e0 [ 23.701803] [] ? sg_get_rq_mark+0x142/0x190 [ 23.701808] [] sg_read+0x8bd/0x1440 [ 23.701816] [] ? save_stack_trace+0x16/0x20 [ 23.701823] [] ? save_stack+0x43/0xd0 [ 23.701829] [] ? kasan_slab_free+0x72/0xc0 [ 23.701834] [] ? kmem_cache_free+0xc7/0x300 [ 23.701840] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 23.701849] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 23.701855] [] ? sg_proc_seq_show_debug+0xd10/0xd10 [ 23.701863] [] __vfs_read+0x103/0x670 [ 23.701870] [] ? default_llseek+0x290/0x290 [ 23.701877] [] ? fsnotify+0x86/0xf30 [ 23.701884] [] ? fsnotify+0xf30/0xf30 [ 23.701896] [] ? avc_policy_seqno+0x9/0x20 [ 23.701904] [] ? selinux_file_permission+0x82/0x460 [ 23.701911] [] ? security_file_permission+0x89/0x1e0 [ 23.701917] [] ? rw_verify_area+0xe5/0x2b0 [ 23.701923] [] vfs_read+0x11e/0x380 [ 23.701929] [] SyS_read+0xd9/0x1b0 [ 23.701936] [] ? vfs_copy_file_range+0x740/0x740 [ 23.701942] [] ? do_fast_syscall_32+0xcf/0x890 [ 23.701948] [] ? vfs_copy_file_range+0x740/0x740 [ 23.701954] [] do_fast_syscall_32+0x2f7/0x890 [ 23.701959] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 23.701967] [] entry_SYSENTER_compat+0x51/0x60 [ 23.702064] Code: e9 27 fc ff ff 0f 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 53 48 89 fb 48 83 c7 1c 48 89 fa 48 83 ec 08 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 3d [ 23.702072] RIP [] __free_pages+0x21/0x80 [ 23.702074] RSP [ 23.702122] ---[ end trace 52c19221e831e33d ]--- [ 23.702125] Kernel panic - not syncing: Fatal exception [ 23.702530] Dumping ftrace buffer: [ 23.702532] (ftrace buffer empty) [ 23.702535] Kernel Offset: disabled [ 24.083936] Rebooting in 86400 seconds..