[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [ 9.074012][ T22] audit: type=1400 audit(1579444126.121:10): avc: denied { watch } for pid=1802 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 [ 9.080692][ T22] audit: type=1400 audit(1579444126.121:11): avc: denied { watch } for pid=1802 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: [ 11.991214][ T22] audit: type=1400 audit(1579444129.031:12): avc: denied { map } for pid=1862 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 '10.128.0.52' (ECDSA) to the list of known hosts. executing program [ 18.282739][ T22] audit: type=1400 audit(1579444135.331:13): avc: denied { map } for pid=1874 comm="syz-executor266" path="/root/syz-executor266804383" 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 [ 18.298459][ T22] audit: type=1400 audit(1579444135.341:14): avc: denied { create } for pid=1875 comm="syz-executor266" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1 [ 18.302616][ T22] audit: type=1400 audit(1579444135.341:15): avc: denied { map_create } for pid=1875 comm="syz-executor266" 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 [ 18.325700][ T22] audit: type=1400 audit(1579444135.341:16): avc: denied { map_read map_write } for pid=1875 comm="syz-executor266" 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 [ 18.325903][ T1875] netlink: 'syz-executor266': attribute type 1 has an invalid length. [ 18.350096][ T22] audit: type=1400 audit(1579444135.341:17): avc: denied { prog_load } for pid=1875 comm="syz-executor266" 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 [ 18.357974][ T1875] netlink: 'syz-executor266': attribute type 1 has an invalid length. [ 18.381554][ T22] audit: type=1400 audit(1579444135.371:18): avc: denied { prog_run } for pid=1875 comm="syz-executor266" 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 [ 18.389925][ T1875] netlink: 'syz-executor266': attribute type 1 has an invalid length. [ 18.421300][ T1875] netlink: 'syz-executor266': attribute type 1 has an invalid length. [ 18.429505][ T1875] netlink: 'syz-executor266': attribute type 1 has an invalid length. [ 18.437714][ T1875] netlink: 'syz-executor266': attribute type 1 has an invalid length. [ 18.446079][ T1875] BUG: unable to handle page fault for address: ffffed101a0959ff [ 18.453804][ T1875] #PF: supervisor read access in kernel mode [ 18.459750][ T1875] #PF: error_code(0x0000) - not-present page [ 18.465729][ T1875] PGD 21fff7067 P4D 21fff7067 PUD 21fff6067 PMD 0 [ 18.472203][ T1875] Oops: 0000 [#1] PREEMPT SMP KASAN [ 18.477382][ T1875] CPU: 0 PID: 1875 Comm: syz-executor266 Not tainted 5.4.13-syzkaller-00760-gb0b02162a4b8 #0 [ 18.487503][ T1875] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 18.497772][ T1875] RIP: 0010:do_xdp_generic+0x603/0x1500 [ 18.503291][ T1875] 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 [ 18.522879][ T1875] RSP: 0018:ffff8881d048f680 EFLAGS: 00010a07 [ 18.528920][ T1875] RAX: 1ffff1101a0959ff RBX: ffff8881d048f788 RCX: 1ffff1103a091ef1 [ 18.536876][ T1875] RDX: ffff8881d65ce2f4 RSI: 0000000000000000 RDI: ffff8881d048f798 [ 18.544818][ T1875] RBP: ffff8881d048f830 R08: ffffffff82da194b R09: ffffed103a093a5d [ 18.552761][ T1875] R10: ffffed103a093a5d R11: 0000000000000000 R12: ffff8880d049d13e [ 18.560704][ T1875] R13: ffff8881d049d000 R14: dffffc0000000000 R15: ffff8880d04acfff [ 18.568647][ T1875] FS: 000000000105f880(0000) GS:ffff8881dba00000(0000) knlGS:0000000000000000 [ 18.577544][ T1875] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.584097][ T1875] CR2: ffffed101a0959ff CR3: 00000001d3de1002 CR4: 00000000001606f0 [ 18.592039][ T1875] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.599990][ T1875] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.610462][ T1875] Call Trace: [ 18.613744][ T1875] ? __kasan_check_write+0x14/0x20 [ 18.618828][ T1875] ? _copy_from_iter+0x886/0xaa0 [ 18.623739][ T1875] ? generic_xdp_tx+0x4f0/0x4f0 [ 18.628607][ T1875] ? tun_get_user+0x3cd0/0x3cd0 [ 18.633462][ T1875] tun_get_user+0x2498/0x3cd0 [ 18.638120][ T1875] ? tun_do_read+0x1f10/0x1f10 [ 18.642855][ T1875] ? netlink_detachskb+0x60/0x60 [ 18.647772][ T1875] ? put_pid+0x82/0xe0 [ 18.651875][ T1875] ? netlink_sendmsg+0xa28/0xd40 [ 18.656789][ T1875] ? __rcu_read_lock+0x50/0x50 [ 18.661646][ T1875] ? netlink_getsockopt+0x900/0x900 [ 18.666863][ T1875] tun_chr_write_iter+0x134/0x1c0 [ 18.671873][ T1875] do_iter_readv_writev+0x5fa/0x890 [ 18.677056][ T1875] ? vfs_dedupe_file_range+0xa00/0xa00 [ 18.682490][ T1875] ? security_file_permission+0x157/0x350 [ 18.688542][ T1875] ? rw_verify_area+0x1c2/0x360 [ 18.693386][ T1875] do_iter_write+0x180/0x590 [ 18.697958][ T1875] do_writev+0x2cd/0x560 [ 18.702175][ T1875] ? do_readv+0x400/0x400 [ 18.706495][ T1875] ? __up_read+0x6f/0x1b0 [ 18.710798][ T1875] ? __kasan_check_write+0x14/0x20 [ 18.715883][ T1875] ? __fpregs_load_activate+0x2fc/0x3b0 [ 18.721403][ T1875] ? switch_fpu_return+0x10/0x10 [ 18.726323][ T1875] ? __kasan_check_read+0x11/0x20 [ 18.731319][ T1875] __x64_sys_writev+0x7d/0x90 [ 18.735973][ T1875] do_syscall_64+0xc0/0x100 [ 18.740456][ T1875] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 18.746316][ T1875] RIP: 0033:0x441b80 [ 18.750194][ T1875] Code: 05 48 3d 01 f0 ff ff 0f 83 fd 0e fc ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 3d b1 94 29 00 00 75 14 b8 14 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 d4 0e fc ff c3 48 83 ec 08 e8 7a 2b 00 00 [ 18.769769][ T1875] RSP: 002b:00007ffe295989e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 18.778151][ T1875] RAX: ffffffffffffffda RBX: 00007ffe29598a00 RCX: 0000000000441b80 [ 18.786096][ T1875] RDX: 0000000000000001 RSI: 00007ffe29598a30 RDI: 00000000000000f0 [ 18.794042][ T1875] RBP: 0000000000000003 R08: 00000000bb1414ac R09: 00000000bb1414ac [ 18.801988][ T1875] R10: 00000000bb1414ac R11: 0000000000000246 R12: 0000000000000000 [ 18.809940][ T1875] R13: 0000000000402f70 R14: 0000000000000000 R15: 0000000000000000 [ 18.817895][ T1875] Modules linked in: [ 18.821764][ T1875] CR2: ffffed101a0959ff [ 18.825897][ T1875] ---[ end trace 52ba9577a9f51191 ]--- [ 18.831328][ T1875] RIP: 0010:do_xdp_generic+0x603/0x1500 [ 18.836844][ T1875] 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 [ 18.856417][ T1875] RSP: 0018:ffff8881d048f680 EFLAGS: 00010a07 [ 18.862463][ T1875] RAX: 1ffff1101a0959ff RBX: ffff8881d048f788 RCX: 1ffff1103a091ef1 [ 18.870405][ T1875] RDX: ffff8881d65ce2f4 RSI: 0000000000000000 RDI: ffff8881d048f798 [ 18.878357][ T1875] RBP: ffff8881d048f830 R08: ffffffff82da194b R09: ffffed103a093a5d [ 18.886298][ T1875] R10: ffffed103a093a5d R11: 0000000000000000 R12: ffff8880d049d13e [ 18.894241][ T1875] R13: ffff8881d049d000 R14: dffffc0000000000 R15: ffff8880d04acfff [ 18.902204][ T1875] FS: 000000000105f880(0000) GS:ffff8881dba00000(0000) knlGS:0000000000000000 [ 18.911103][ T1875] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 18.917669][ T1875] CR2: ffffed101a0959ff CR3: 00000001d3de1002 CR4: 00000000001606f0 [ 18.925628][ T1875] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 18.933579][ T1875] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 18.941525][ T1875] Kernel panic - not syncing: Fatal exception in interrupt [ 18.949569][ T1875] Kernel Offset: disabled [ 18.953887][ T1875] Rebooting in 86400 seconds..