[....] Starting enhanced syslogd: rsyslogd[ 15.723054] audit: type=1400 audit(1517926307.378:5): avc: denied { syslog } for pid=3981 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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 syzkaller login: [ 17.885548] audit: type=1400 audit(1517926309.541:6): avc: denied { map } for pid=4121 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.28' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program [ 60.083892] audit: type=1400 audit(1517926351.739:7): avc: denied { map } for pid=4139 comm="syzkaller851476" path="/root/syzkaller851476833" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 60.090371] ipt_CLUSTERIP: ipt_CLUSTERIP is deprecated and it will removed soon, use xt_cluster instead [ 60.121325] x_tables: ip_tables: osf match: only valid for protocol 6 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 60.121551] x_tables: ip_tables: osf match: only valid for protocol 6 [ 60.128868] x_tables: ip_tables: osf match: only valid for protocol 6 [ 60.134884] x_tables: ip_tables: osf match: only valid for protocol 6 [ 60.141649] x_tables: ip_tables: osf match: only valid for protocol 6 [ 60.148237] x_tables: ip_tables: osf match: only valid for protocol 6 [ 60.161233] ------------[ cut here ]------------ [ 60.166077] proc_dir_entry 'ipt_CLUSTERIP/172.20.0.170' already registered [ 60.173141] WARNING: CPU: 1 PID: 4152 at fs/proc/generic.c:330 proc_register+0x2a4/0x370 [ 60.181344] Kernel panic - not syncing: panic_on_warn set ... [ 60.181344] [ 60.188677] CPU: 1 PID: 4152 Comm: syzkaller851476 Not tainted 4.15.0+ #221 [ 60.195747] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.205072] Call Trace: [ 60.207632] dump_stack+0x194/0x257 [ 60.211237] ? arch_local_irq_restore+0x53/0x53 [ 60.215884] ? vsnprintf+0x1ed/0x1900 [ 60.219662] panic+0x1e4/0x41c [ 60.222828] ? refcount_error_report+0x214/0x214 [ 60.227560] ? show_regs_print_info+0x18/0x18 [ 60.232033] ? __warn+0x1c1/0x200 [ 60.235465] ? proc_register+0x2a4/0x370 [ 60.239497] __warn+0x1dc/0x200 [ 60.242750] ? proc_register+0x2a4/0x370 [ 60.246787] report_bug+0x211/0x2d0 [ 60.250392] fixup_bug.part.11+0x37/0x80 [ 60.254429] do_error_trap+0x2d7/0x3e0 [ 60.258302] ? vprintk_default+0x28/0x30 [ 60.262338] ? math_error+0x400/0x400 [ 60.266118] ? printk+0xaa/0xca [ 60.269377] ? show_regs_print_info+0x18/0x18 [ 60.273851] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 60.278672] do_invalid_op+0x1b/0x20 [ 60.282356] invalid_op+0x22/0x40 [ 60.285783] RIP: 0010:proc_register+0x2a4/0x370 [ 60.290422] RSP: 0018:ffff8801cbd6ee20 EFLAGS: 00010286 [ 60.295756] RAX: dffffc0000000008 RBX: ffff8801d2181038 RCX: ffffffff815a57ae [ 60.302997] RDX: 0000000000000000 RSI: 1ffff100397add74 RDI: 1ffff100397add49 [ 60.310237] RBP: ffff8801cbd6ee70 R08: 1ffff100397add0b R09: 0000000000000000 [ 60.317481] R10: ffff8801cbd6ecd8 R11: 0000000000000000 R12: ffff8801b2bb1cc0 [ 60.324722] R13: dffffc0000000000 R14: ffff8801b0d8dbc8 R15: ffff8801b2bb1d81 [ 60.331985] ? vprintk_func+0x5e/0xc0 [ 60.335771] proc_create_data+0xf8/0x180 [ 60.339808] clusterip_tg_check+0xf9c/0x16d0 [ 60.344195] ? arp_mangle+0x550/0x550 [ 60.347970] ? xt_find_target+0x150/0x1e0 [ 60.352091] ? lock_downgrade+0x980/0x980 [ 60.356214] ? rcu_read_lock_sched_held+0x108/0x120 [ 60.361205] ? pcpu_alloc+0x146/0x10e0 [ 60.365075] ? pcpu_free_area+0xa00/0xa00 [ 60.369202] ? __mutex_unlock_slowpath+0xe9/0xac0 [ 60.374015] ? kernel_text_address+0x102/0x140 [ 60.378572] ? wait_for_completion+0x770/0x770 [ 60.383123] ? unwind_get_return_address+0x61/0xa0 [ 60.388025] ? __save_stack_trace+0x7e/0xd0 [ 60.392320] ? arp_mangle+0x550/0x550 [ 60.396095] xt_check_target+0x22c/0x7d0 [ 60.400132] ? xt_target_seq_next+0x30/0x30 [ 60.404426] ? save_stack+0xa3/0xd0 [ 60.408025] ? save_stack+0x43/0xd0 [ 60.411622] ? kasan_slab_free+0x71/0xc0 [ 60.415659] ? kfree+0xd6/0x260 [ 60.418919] ? mutex_unlock+0xd/0x10 [ 60.422603] ? xt_find_target+0x17b/0x1e0 [ 60.426735] find_check_entry.isra.8+0x8c8/0xcb0 [ 60.431473] ? ipt_do_table+0x1950/0x1950 [ 60.435597] ? trace_hardirqs_off+0xd/0x10 [ 60.439804] ? quarantine_put+0xeb/0x190 [ 60.443837] ? kfree+0xf0/0x260 [ 60.447092] ? trace_hardirqs_on+0xd/0x10 [ 60.451221] translate_table+0xed1/0x1610 [ 60.455358] ? alloc_counters.isra.11+0x7d0/0x7d0 [ 60.460177] ? kasan_check_write+0x14/0x20 [ 60.464382] ? _copy_from_user+0x99/0x110 [ 60.468504] do_ipt_set_ctl+0x370/0x5f0 [ 60.472454] ? translate_compat_table+0x1b90/0x1b90 [ 60.477454] ? mutex_unlock+0xd/0x10 [ 60.481141] ? nf_sockopt_find.constprop.0+0x1a7/0x220 [ 60.486392] nf_setsockopt+0x67/0xc0 [ 60.490080] ip_setsockopt+0x97/0xa0 [ 60.493772] sctp_setsockopt+0x2b6/0x61d0 [ 60.497896] ? sctp_setsockopt_paddr_thresholds+0x550/0x550 [ 60.503590] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 60.508759] ? lru_cache_add+0x1c7/0x3a0 [ 60.512792] ? mem_cgroup_css_offline+0x510/0x510 [ 60.517606] ? check_noncircular+0x20/0x20 [ 60.521811] ? __mem_cgroup_threshold+0x8f0/0x8f0 [ 60.526630] ? mark_held_locks+0xaf/0x100 [ 60.530753] ? find_held_lock+0x35/0x1d0 [ 60.534790] ? check_noncircular+0x20/0x20 [ 60.539000] ? lock_downgrade+0x980/0x980 [ 60.543119] ? check_noncircular+0x20/0x20 [ 60.547329] ? lock_release+0xa40/0xa40 [ 60.551283] ? find_held_lock+0x35/0x1d0 [ 60.555330] ? avc_has_perm+0x35e/0x680 [ 60.559291] ? lock_downgrade+0x980/0x980 [ 60.563416] ? lock_release+0xa40/0xa40 [ 60.567359] ? lock_downgrade+0x980/0x980 [ 60.571478] ? __pmd_alloc+0x4e0/0x4e0 [ 60.575340] ? lock_release+0xa40/0xa40 [ 60.579301] ? __lock_is_held+0xb6/0x140 [ 60.583346] ? avc_has_perm+0x43e/0x680 [ 60.587296] ? avc_has_perm_noaudit+0x520/0x520 [ 60.591946] ? iterate_fd+0x3f0/0x3f0 [ 60.595719] ? lock_downgrade+0x980/0x980 [ 60.599847] ? handle_mm_fault+0x476/0x930 [ 60.604052] ? down_read_trylock+0xdb/0x170 [ 60.608346] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 60.612899] ? vmacache_find+0x5f/0x280 [ 60.616848] ? sock_has_perm+0x2a4/0x420 [ 60.620891] ? selinux_secmark_relabel_packet+0xc0/0xc0 [ 60.626225] ? __do_page_fault+0x3d6/0xc90 [ 60.630440] ? selinux_netlbl_socket_setsockopt+0x10c/0x460 [ 60.636123] ? selinux_netlbl_sock_rcv_skb+0x730/0x730 [ 60.641386] ? sock_alloc_file+0x2a6/0x560 [ 60.645603] sock_common_setsockopt+0x95/0xd0 [ 60.650082] SyS_setsockopt+0x189/0x360 [ 60.654031] ? SyS_recv+0x40/0x40 [ 60.657458] ? entry_SYSCALL_64_fastpath+0x5/0xa0 [ 60.662277] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 60.667285] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 60.672018] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 60.676744] RIP: 0033:0x446839 [ 60.679906] RSP: 002b:00007f0309d0fdb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 60.687586] RAX: ffffffffffffffda RBX: 00000000006dbc24 RCX: 0000000000446839 [ 60.694826] RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 [ 60.702064] RBP: 00000000006dbc20 R08: 0000000000000348 R09: 0000000000000000 [ 60.709311] R10: 0000000020013c90 R11: 0000000000000246 R12: 0000000000000000 [ 60.716555] R13: 00007ffc7d53f79f R14: 00007f0309d109c0 R15: 0000000000000003 [ 60.724274] Dumping ftrace buffer: [ 60.727856] (ftrace buffer empty) [ 60.731540] Kernel Offset: disabled [ 60.735139] Rebooting in 86400 seconds..