[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [ 9.276380][ T22] audit: type=1400 audit(1579521572.259:10): avc: denied { watch } for pid=1801 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 [ 9.289169][ T22] audit: type=1400 audit(1579521572.269:11): avc: denied { watch } for pid=1801 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 OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 10.149933][ T22] audit: type=1400 audit(1579521573.129:12): avc: denied { map } for pid=1868 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.31' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 16.265800][ T22] audit: type=1400 audit(1579521579.249:13): avc: denied { map } for pid=1880 comm="syz-executor421" path="/root/syz-executor421097063" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 16.283441][ T22] audit: type=1400 audit(1579521579.269:14): avc: denied { prog_load } for pid=1882 comm="syz-executor421" 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 [ 16.300795][ T22] audit: type=1400 audit(1579521579.289:15): avc: denied { prog_run } for pid=1882 comm="syz-executor421" 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 [ 16.324379][ T22] audit: type=1400 audit(1579521579.289:16): avc: denied { open } for pid=1882 comm="syz-executor421" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=perf_event permissive=1 [ 16.348001][ T22] audit: type=1400 audit(1579521579.289:17): avc: denied { kernel } for pid=1882 comm="syz-executor421" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=perf_event permissive=1 [ 16.384806][ T1882] netlink: 'syz-executor421': attribute type 1 has an invalid length. [ 16.393059][ T1882] netlink: 'syz-executor421': attribute type 1 has an invalid length. [ 16.401282][ T1882] netlink: 'syz-executor421': attribute type 1 has an invalid length. [ 16.409661][ T1882] netlink: 'syz-executor421': attribute type 1 has an invalid length. [ 16.417873][ T1882] netlink: 'syz-executor421': attribute type 1 has an invalid length. [ 16.426101][ T1882] netlink: 'syz-executor421': attribute type 1 has an invalid length. executing program [ 16.533854][ T1883] BUG: unable to handle page fault for address: ffffed101a2700ff [ 16.541621][ T1883] #PF: supervisor read access in kernel mode [ 16.547626][ T1883] #PF: error_code(0x0000) - not-present page [ 16.553623][ T1883] PGD 21fff7067 P4D 21fff7067 PUD 21fff6067 PMD 0 [ 16.560190][ T1883] Oops: 0000 [#1] PREEMPT SMP KASAN [ 16.565367][ T1883] CPU: 1 PID: 1883 Comm: syz-executor421 Not tainted 5.4.13-syzkaller-00760-gb0b02162a4b8 #0 [ 16.575485][ T1883] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 16.585535][ T1883] RIP: 0010:do_xdp_generic+0x603/0x1500 [ 16.591062][ T1883] Code: 00 00 00 00 fc ff df 42 80 3c 30 00 74 05 e8 c4 a7 96 fe 4c 89 a4 24 d8 00 00 00 4c 89 ac 24 18 01 00 00 4c 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 08 4c 89 ff e8 fe a6 96 fe 49 8b 37 83 e6 01 31 [ 16.611027][ T1883] RSP: 0018:ffff8881d0467680 EFLAGS: 00010a07 [ 16.617632][ T1883] RAX: 1ffff1101a2700ff RBX: ffff8881d0467788 RCX: 1ffff1103a08cef1 [ 16.625585][ T1883] RDX: ffff8881d478a1b4 RSI: 0000000000000000 RDI: ffff8881d0467798 [ 16.633691][ T1883] RBP: ffff8881d0467830 R08: ffffffff82da194b R09: ffffed103a26e15d [ 16.641640][ T1883] R10: ffffed103a26e15d R11: 0000000000000000 R12: ffff8880d1370936 [ 16.649592][ T1883] R13: ffff8881d1370800 R14: dffffc0000000000 R15: ffff8880d13807ff [ 16.657778][ T1883] FS: 000000000091d880(0000) GS:ffff8881dbb00000(0000) knlGS:0000000000000000 [ 16.666683][ T1883] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 16.673400][ T1883] CR2: ffffed101a2700ff CR3: 00000001d3efc005 CR4: 00000000001606e0 [ 16.681362][ T1883] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 16.689720][ T1883] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 16.697707][ T1883] Call Trace: [ 16.700985][ T1883] ? __kasan_check_write+0x14/0x20 [ 16.706148][ T1883] ? _copy_from_iter+0x886/0xaa0 [ 16.711097][ T1883] ? generic_xdp_tx+0x4f0/0x4f0 [ 16.715939][ T1883] ? tun_get_user+0x3cd0/0x3cd0 [ 16.720763][ T1883] tun_get_user+0x2498/0x3cd0 [ 16.725459][ T1883] ? __kasan_check_read+0x11/0x20 [ 16.730995][ T1883] ? __alloc_pages_nodemask+0x52d/0x3010 [ 16.736904][ T1883] ? tun_do_read+0x1f10/0x1f10 [ 16.741735][ T1883] ? file_remove_privs+0x630/0x630 [ 16.746864][ T1883] ? pipe_write+0x1005/0x1220 [ 16.751616][ T1883] ? __rcu_read_lock+0x50/0x50 [ 16.756360][ T1883] ? __rcu_read_lock+0x50/0x50 [ 16.761104][ T1883] ? __memcg_kmem_charge_memcg+0x340/0x340 [ 16.766892][ T1883] tun_chr_write_iter+0x134/0x1c0 [ 16.771890][ T1883] do_iter_readv_writev+0x5fa/0x890 [ 16.777067][ T1883] ? vfs_dedupe_file_range+0xa00/0xa00 [ 16.782628][ T1883] ? security_file_permission+0x157/0x350 [ 16.788328][ T1883] ? rw_verify_area+0x1c2/0x360 [ 16.793156][ T1883] do_iter_write+0x180/0x590 [ 16.798453][ T1883] do_writev+0x2cd/0x560 [ 16.802790][ T1883] ? do_readv+0x400/0x400 [ 16.807187][ T1883] ? __up_read+0x6f/0x1b0 [ 16.811496][ T1883] ? __down_read+0x240/0x240 [ 16.816185][ T1883] ? do_user_addr_fault+0x6b7/0xb50 [ 16.821363][ T1883] __x64_sys_writev+0x7d/0x90 [ 16.826014][ T1883] do_syscall_64+0xc0/0x100 [ 16.830533][ T1883] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 16.836433][ T1883] RIP: 0033:0x446120 [ 16.840391][ T1883] Code: 05 48 3d 01 f0 ff ff 0f 83 7d cd fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 3d f1 4e 29 00 00 75 14 b8 14 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 54 cd fb ff c3 48 83 ec 08 e8 ba 2b 00 00 [ 16.860120][ T1883] RSP: 002b:00007fff4df05558 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 16.868510][ T1883] RAX: ffffffffffffffda RBX: 00007fff4df05570 RCX: 0000000000446120 [ 16.876459][ T1883] RDX: 0000000000000001 RSI: 00007fff4df055a0 RDI: 00000000000000f0 [ 16.884406][ T1883] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000004 [ 16.892351][ T1883] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000003f89 [ 16.900761][ T1883] R13: 0000000000403390 R14: 0000000000000000 R15: 0000000000000000 [ 16.908715][ T1883] Modules linked in: [ 16.912588][ T1883] CR2: ffffed101a2700ff [ 16.916793][ T1883] ---[ end trace c55996eaa9a59177 ]--- [ 16.922235][ T1883] RIP: 0010:do_xdp_generic+0x603/0x1500 [ 16.927865][ T1883] Code: 00 00 00 00 fc ff df 42 80 3c 30 00 74 05 e8 c4 a7 96 fe 4c 89 a4 24 d8 00 00 00 4c 89 ac 24 18 01 00 00 4c 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 08 4c 89 ff e8 fe a6 96 fe 49 8b 37 83 e6 01 31 [ 16.947607][ T1883] RSP: 0018:ffff8881d0467680 EFLAGS: 00010a07 [ 16.953798][ T1883] RAX: 1ffff1101a2700ff RBX: ffff8881d0467788 RCX: 1ffff1103a08cef1 [ 16.961842][ T1883] RDX: ffff8881d478a1b4 RSI: 0000000000000000 RDI: ffff8881d0467798 [ 16.969797][ T1883] RBP: ffff8881d0467830 R08: ffffffff82da194b R09: ffffed103a26e15d [ 16.977752][ T1883] R10: ffffed103a26e15d R11: 0000000000000000 R12: ffff8880d1370936 [ 16.985704][ T1883] R13: ffff8881d1370800 R14: dffffc0000000000 R15: ffff8880d13807ff [ 16.993708][ T1883] FS: 000000000091d880(0000) GS:ffff8881dbb00000(0000) knlGS:0000000000000000 [ 17.002617][ T1883] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 17.009360][ T1883] CR2: ffffed101a2700ff CR3: 00000001d3efc005 CR4: 00000000001606e0 [ 17.017460][ T1883] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 17.025555][ T1883] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 17.033906][ T1883] Kernel panic - not syncing: Fatal exception in interrupt [ 17.044587][ T1883] Kernel Offset: disabled [ 17.048898][ T1883] Rebooting in 86400 seconds..