[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [ 9.413824][ T22] audit: type=1400 audit(1578718803.252:10): avc: denied { watch } for pid=1795 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 [ 9.423845][ T22] audit: type=1400 audit(1578718803.252:11): avc: denied { watch } for pid=1795 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: [ 11.857476][ T22] audit: type=1400 audit(1578718805.692:12): avc: denied { map } for pid=1874 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 '10.128.0.138' (ECDSA) to the list of known hosts. executing program [ 17.991910][ T22] audit: type=1400 audit(1578718811.822:13): avc: denied { map } for pid=1886 comm="syz-executor978" path="/root/syz-executor978612996" 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 [ 18.000621][ T22] audit: type=1400 audit(1578718811.822:14): avc: denied { prog_load } for pid=1886 comm="syz-executor978" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=bpf permissive=1 [ 18.007788][ T22] audit: type=1400 audit(1578718811.842:15): avc: denied { prog_run } for pid=1886 comm="syz-executor978" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=bpf permissive=1 [ 18.007816][ T1886] kasan: CONFIG_KASAN_INLINE enabled [ 18.023570][ T1886] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 18.031625][ T1886] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 18.038547][ T1886] CPU: 1 PID: 1886 Comm: syz-executor978 Not tainted 5.4.10-syzkaller-00217-gf5f770e495ba #0 [ 18.048686][ T1886] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.058754][ T1886] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x11b/0x280 [ 18.065241][ T1886] Code: 00 4c 89 e0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 e7 e8 b8 90 8d fe 4d 8b 24 24 49 8d bc 24 fc 00 00 00 48 89 f8 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 39 01 00 00 45 8b bc 24 fc 00 00 00 44 89 [ 18.085209][ T1886] RSP: 0018:ffff8881cd1af530 EFLAGS: 00010203 [ 18.091268][ T1886] RAX: 000000000000001f RBX: 0000000000000080 RCX: 0000000000000000 [ 18.099229][ T1886] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000000000fc [ 18.107187][ T1886] RBP: ffff8881cd1af558 R08: ffffffff82e2f31f R09: fffffbfff0933d6d [ 18.115216][ T1886] R10: fffffbfff0933d6d R11: 0000000000000000 R12: 0000000000000000 [ 18.123184][ T1886] R13: dffffc0000000000 R14: 0000000000000fff R15: ffff8881d0d12812 [ 18.131153][ T1886] FS: 0000000002541880(0000) GS:ffff8881dbb00000(0000) knlGS:0000000000000000 [ 18.140149][ T1886] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.146796][ T1886] CR2: 0000000020000200 CR3: 00000001c4eaa006 CR4: 00000000001606e0 [ 18.154778][ T1886] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.162795][ T1886] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.170774][ T1886] Call Trace: [ 18.174051][ T1886] bpf_prog_4b8778e422fd6c39+0x16c/0x1000 [ 18.179770][ T1886] ? __se_sys_swapoff+0x280/0x16c0 [ 18.184868][ T1886] ? bpf_prog_test_run_skb+0x309/0x10e0 [ 18.190408][ T1886] ? __do_sys_bpf+0x31e8/0xbbc0 [ 18.195255][ T1886] ? __x64_sys_bpf+0x7a/0x90 [ 18.199827][ T1886] ? do_syscall_64+0xc0/0x100 [ 18.204511][ T1886] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 18.210574][ T1886] ? avc_update_node+0x311/0xe40 [ 18.215509][ T1886] ? __rcu_read_lock+0x50/0x50 [ 18.220285][ T1886] ? should_fail+0x18e/0x860 [ 18.224884][ T1886] ? ktime_get+0x126/0x160 [ 18.229318][ T1886] ? __kasan_check_read+0x11/0x20 [ 18.234381][ T1886] bpf_test_run+0x2c0/0x6a0 [ 18.238892][ T1886] ? kzalloc+0x40/0x40 [ 18.242947][ T1886] bpf_prog_test_run_skb+0x7a6/0x10e0 [ 18.248331][ T1886] ? __bpf_trace_bpf_test_finish+0x30/0x30 [ 18.254120][ T1886] ? __kasan_check_read+0x11/0x20 [ 18.259279][ T1886] ? __bpf_prog_get+0x294/0x320 [ 18.264124][ T1886] ? __bpf_trace_bpf_test_finish+0x30/0x30 [ 18.269921][ T1886] __do_sys_bpf+0x31e8/0xbbc0 [ 18.274593][ T1886] ? pipe_write+0x1005/0x1220 [ 18.279261][ T1886] ? gfp_pfmemalloc_allowed+0x140/0x140 [ 18.284803][ T1886] ? __rcu_read_lock+0x50/0x50 [ 18.289561][ T1886] ? __memcg_kmem_charge_memcg+0x340/0x340 [ 18.295378][ T1886] ? __bpf_prog_put_rcu+0x350/0x350 [ 18.300573][ T1886] ? get_mem_cgroup_from_mm+0x2b2/0x330 [ 18.306097][ T1886] ? mem_cgroup_from_task+0x60/0x60 [ 18.311274][ T1886] ? __kasan_check_read+0x11/0x20 [ 18.316284][ T1886] ? __lru_cache_add+0x1ae/0x200 [ 18.321228][ T1886] ? lru_cache_add_active_or_unevictable+0xa6/0x120 [ 18.327804][ T1886] ? _raw_spin_unlock+0x9/0x20 [ 18.332548][ T1886] ? handle_mm_fault+0xb2f/0x41c0 [ 18.337566][ T1886] ? finish_fault+0x230/0x230 [ 18.342234][ T1886] ? __kasan_check_write+0x14/0x20 [ 18.347344][ T1886] ? __up_read+0x6f/0x1b0 [ 18.351663][ T1886] ? __kasan_check_write+0x14/0x20 [ 18.356758][ T1886] ? __fpregs_load_activate+0x2fc/0x3b0 [ 18.362293][ T1886] ? __kasan_check_read+0x11/0x20 [ 18.367304][ T1886] __x64_sys_bpf+0x7a/0x90 [ 18.371697][ T1886] do_syscall_64+0xc0/0x100 [ 18.376189][ T1886] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 18.382056][ T1886] RIP: 0033:0x4403b9 [ 18.385934][ T1886] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 18.405542][ T1886] RSP: 002b:00007ffe6e087aa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 18.413945][ T1886] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004403b9 [ 18.421896][ T1886] RDX: 0000000000000040 RSI: 0000000020000280 RDI: 000000000000000a [ 18.429864][ T1886] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 18.437830][ T1886] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401c40 [ 18.445854][ T1886] R13: 0000000000401cd0 R14: 0000000000000000 R15: 0000000000000000 [ 18.453820][ T1886] Modules linked in: [ 18.457765][ T1886] ---[ end trace bfc751cf351860b3 ]--- [ 18.463259][ T1886] RIP: 0010:bpf_skb_ancestor_cgroup_id+0x11b/0x280 [ 18.469742][ T1886] Code: 00 4c 89 e0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 e7 e8 b8 90 8d fe 4d 8b 24 24 49 8d bc 24 fc 00 00 00 48 89 f8 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 39 01 00 00 45 8b bc 24 fc 00 00 00 44 89 [ 18.489486][ T1886] RSP: 0018:ffff8881cd1af530 EFLAGS: 00010203 [ 18.495658][ T1886] RAX: 000000000000001f RBX: 0000000000000080 RCX: 0000000000000000 [ 18.503748][ T1886] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000000000fc [ 18.511737][ T1886] RBP: ffff8881cd1af558 R08: ffffffff82e2f31f R09: fffffbfff0933d6d [ 18.519772][ T1886] R10: fffffbfff0933d6d R11: 0000000000000000 R12: 0000000000000000 [ 18.527776][ T1886] R13: dffffc0000000000 R14: 0000000000000fff R15: ffff8881d0d12812 [ 18.536039][ T1886] FS: 0000000002541880(0000) GS:ffff8881dbb00000(0000) knlGS:0000000000000000 [ 18.545099][ T1886] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.551803][ T1886] CR2: 0000000020000200 CR3: 00000001c4eaa006 CR4: 00000000001606e0 [ 18.559824][ T1886] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.567840][ T1886] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.575922][ T1886] Kernel panic - not syncing: Fatal exception [ 18.582729][ T1886] Kernel Offset: disabled [ 18.587048][ T1886] Rebooting in 86400 seconds..