[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [ 9.778674][ T22] audit: type=1400 audit(1582340636.683:10): avc: denied { watch } for pid=1803 comm="restorecond" path="/root/.ssh" dev="sda1" ino=16179 scontext=system_u:system_r:kernel_t:s0 tcontext=unconfined_u:object_r:ssh_home_t:s0 tclass=dir permissive=1 [ 9.789072][ T22] audit: type=1400 audit(1582340636.683:11): avc: denied { watch } for pid=1803 comm="restorecond" path="/etc/selinux/restorecond.conf" dev="sda1" ino=2280 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [....] 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: [ 11.283424][ T22] audit: type=1400 audit(1582340638.183:12): avc: denied { map } for pid=1869 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 '10.128.0.139' (ECDSA) to the list of known hosts. executing program [ 17.413813][ T22] audit: type=1400 audit(1582340644.313:13): avc: denied { map } for pid=1881 comm="syz-executor837" path="/root/syz-executor837868039" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 17.468939][ T22] audit: type=1305 audit(1582340644.373:14): op=set audit_failure=2 old=1 auid=4294967295 ses=4294967295 subj=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 res=1 [ 17.490198][ T1891] audit: audit_backlog=23 > audit_backlog_limit=7 [ 17.494060][ T22] audit: type=1325 audit(1582340644.373:15): table=filter family=3 entries=0 [ 17.499750][ T1893] audit: audit_backlog=22 > audit_backlog_limit=7 [ 17.512496][ T1891] audit: audit_lost=1 audit_rate_limit=0 audit_backlog_limit=7 [ 17.513473][ T22] audit: type=1325 audit(1582340644.373:16): table=filter family=3 entries=0 [ 17.520533][ T1893] audit: audit_lost=2 audit_rate_limit=0 audit_backlog_limit=7 [ 17.529930][ T22] audit: type=1325 audit(1582340644.373:17): table=filter family=2 entries=0 [ 17.537613][ T1891] Kernel panic - not syncing: audit: backlog limit exceeded [ 17.546810][ T22] audit: type=1325 audit(1582340644.373:18): table=nat family=2 entries=0 [ 17.553866][ T1891] CPU: 1 PID: 1891 Comm: syz-executor837 Not tainted 5.4.21-syzkaller-00756-ge12432318607 #0 [ 17.553872][ T1891] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 17.553875][ T1891] Call Trace: [ 17.553896][ T1891] dump_stack+0x1b0/0x228 [ 17.553906][ T1891] ? devkmsg_release+0x127/0x127 [ 17.553914][ T1891] ? show_regs_print_info+0x18/0x18 [ 17.553923][ T1891] ? _raw_spin_trylock+0xc6/0x190 [ 17.553931][ T1891] panic+0x26c/0x719 [ 17.553940][ T1891] ? audit_log_lost+0x114/0x1e0 [ 17.553946][ T1891] ? nmi_panic+0x97/0x97 [ 17.553953][ T1891] ? devkmsg_release+0x127/0x127 [ 17.553961][ T1891] audit_log_lost+0x1d7/0x1e0 [ 17.553968][ T1891] audit_log_start+0x55b/0x9a0 [ 17.553977][ T1891] ? __sys_getsockopt+0x1f4/0x360 [ 17.553984][ T1891] ? audit_serial+0x30/0x30 [ 17.553995][ T1891] ? nf_getsockopt+0x28e/0x2b0 [ 17.554002][ T1891] ? ip_getsockopt+0x13c/0x230 [ 17.554010][ T1891] ? tcp_getsockopt+0xbe/0xd0 [ 17.554025][ T1891] ? sock_common_getsockopt+0x99/0xb0 [ 17.554033][ T1891] ? __sys_getsockopt+0x1f4/0x360 [ 17.554041][ T1891] ? __x64_sys_getsockopt+0xbf/0xd0 [ 17.554049][ T1891] ? do_syscall_64+0xc0/0x100 [ 17.554057][ T1891] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 17.554066][ T1891] ? __kasan_check_write+0x14/0x20 [ 17.554074][ T1891] ? mutex_unlock+0x1d/0x40 [ 17.554084][ T1891] ? xt_find_target+0x22c/0x240 [ 17.554094][ T1891] audit_log+0x99/0x130 [ 17.554103][ T1891] ? audit_signal_info+0x250/0x250 [ 17.554113][ T1891] ? _local_bh_enable+0x30/0x30 [ 17.554121][ T1891] ? __kmalloc+0x102/0x310 [ 17.554129][ T1891] ? kasan_kmalloc+0x9/0x10 [ 17.554138][ T1891] ? find_next_bit+0xd8/0x120 [ 17.554146][ T1891] ? cpumask_next+0x11/0x30 [ 17.554155][ T1891] xt_replace_table+0x61b/0x7a0 [ 17.554164][ T1891] xt_register_table+0x238/0x590 [ 17.554174][ T1891] ? local_bh_enable+0x30/0x30 [ 17.554186][ T1891] arpt_register_table+0x161/0x6d0 [ 17.554197][ T1891] ? local_bh_enable+0x30/0x30 [ 17.554206][ T1891] ? __should_failslab+0x90/0x160 [ 17.554215][ T1891] ? arpt_alloc_initial_table+0x7b/0x630 [ 17.554222][ T1891] ? kasan_kmalloc+0x9/0x10 [ 17.554230][ T1891] ? memset+0x31/0x40 [ 17.554239][ T1891] ? arpt_alloc_initial_table+0x512/0x630 [ 17.554248][ T1891] arptable_filter_table_init+0x7b/0xa0 [ 17.554257][ T1891] xt_find_table_lock+0x251/0x3a0 [ 17.554267][ T1891] xt_request_find_table_lock+0x27/0xc0 [ 17.554276][ T1891] get_info+0x1c3/0x530 [ 17.554285][ T1891] ? __do_replace+0xc60/0xc60 [ 17.554295][ T1891] ? __rcu_read_lock+0x50/0x50 [ 17.554306][ T1891] ? selinux_capable+0x39/0x50 [ 17.554323][ T1891] ? security_capable+0xb2/0xd0 [ 17.824522][ T1891] ? ns_capable+0x8c/0xe0 [ 17.828871][ T1891] do_arpt_get_ctl+0x151/0x9a0 [ 17.833962][ T1891] ? do_swap_page+0x1530/0x1530 [ 17.838923][ T1891] ? compat_do_arpt_set_ctl+0x2440/0x2440 [ 17.844834][ T1891] ? __kasan_check_write+0x14/0x20 [ 17.850056][ T1891] ? mutex_lock+0xa6/0x110 [ 17.854691][ T1891] ? __module_get+0x140/0x140 [ 17.859592][ T1891] ? avc_has_perm_noaudit+0x3f0/0x3f0 [ 17.865274][ T1891] nf_getsockopt+0x28e/0x2b0 [ 17.869885][ T1891] ip_getsockopt+0x13c/0x230 [ 17.874647][ T1891] ? compat_ip_setsockopt+0x110/0x110 [ 17.880174][ T1891] ? __up_read+0x6f/0x1b0 [ 17.884522][ T1891] tcp_getsockopt+0xbe/0xd0 [ 17.889319][ T1891] sock_common_getsockopt+0x99/0xb0 [ 17.894681][ T1891] __sys_getsockopt+0x1f4/0x360 [ 17.899549][ T1891] __x64_sys_getsockopt+0xbf/0xd0 [ 17.904796][ T1891] do_syscall_64+0xc0/0x100 [ 17.909477][ T1891] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 17.915504][ T1891] RIP: 0033:0x44494a [ 17.919413][ T1891] Code: b8 10 01 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 8d df fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 6a df fb ff c3 66 0f 1f 84 00 00 00 00 00 [ 17.939479][ T1891] RSP: 002b:00007ffe7e51b1b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 [ 17.948195][ T1891] RAX: ffffffffffffffda RBX: 00000000004a31c9 RCX: 000000000044494a [ 17.956380][ T1891] RDX: 0000000000000060 RSI: 0000000000000000 RDI: 0000000000000003 [ 17.964373][ T1891] RBP: 0000000000000003 R08: 00007ffe7e51b1cc R09: 0000000000000000 [ 17.972474][ T1891] R10: 00000000006cd448 R11: 0000000000000246 R12: 00000000006ccdc8 [ 17.980473][ T1891] R13: 0000000000402dd0 R14: 0000000000000000 R15: 0000000000000000 [ 19.095977][ T1891] Shutting down cpus with NMI [ 19.101790][ T1891] Kernel Offset: disabled [ 19.106925][ T1891] Rebooting in 86400 seconds..