[ 46.033521][ T27] audit: type=1800 audit(1566083835.526:27): pid=7957 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 46.053944][ T27] audit: type=1800 audit(1566083835.526:28): pid=7957 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 46.709371][ T27] audit: type=1800 audit(1566083836.276:29): pid=7957 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 46.729763][ T27] audit: type=1800 audit(1566083836.276:30): pid=7957 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.160' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 56.661182][ T8110] IPVS: ftp: loaded support on port[0] = 21 [ 56.716149][ T8118] ------------[ cut here ]------------ [ 56.721657][ T8118] kernel BUG at include/linux/skbuff.h:2233! [ 56.727649][ T8118] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 56.733690][ T8118] CPU: 0 PID: 8118 Comm: syz-executor557 Not tainted 5.3.0-rc4-next-20190816 #67 [ 56.742754][ T8118] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.752786][ T8118] RIP: 0010:skb_pull+0xea/0x110 [ 56.757605][ T8118] Code: 9d c8 00 00 00 49 89 dc 49 89 9d c8 00 00 00 e8 7c dc da fb 4c 89 e0 5b 41 5c 41 5d 41 5e 5d c3 45 31 e4 eb ea e8 66 dc da fb <0f> 0b e8 6f b9 15 fc e9 44 ff ff ff e8 65 b9 15 fc eb 8a e8 7e b9 [ 56.777260][ T8118] RSP: 0018:ffff88809c8aee50 EFLAGS: 00010293 [ 56.783295][ T8118] RAX: ffff888096218100 RBX: 0000000000000004 RCX: ffffffff859753c6 [ 56.791233][ T8118] RDX: 0000000000000000 RSI: ffffffff8597541a RDI: 0000000000000004 [ 56.799171][ T8118] RBP: ffff88809c8aee70 R08: ffff888096218100 R09: fffffbfff14ee933 [ 56.807107][ T8118] R10: fffffbfff14ee932 R11: ffffffff8a774997 R12: 00000000a7a55dcc [ 56.815044][ T8118] R13: ffff88809c8af4c0 R14: 00000000ffff8880 R15: ffff88809c8af4c0 [ 56.822983][ T8118] FS: 0000555555f93880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 56.831873][ T8118] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.838422][ T8118] CR2: 0000000020000100 CR3: 0000000098ffe000 CR4: 00000000001406f0 [ 56.846364][ T8118] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.854305][ T8118] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.862240][ T8118] Call Trace: [ 56.865498][ T8118] ? __kasan_check_read+0x11/0x20 [ 56.870492][ T8118] sctp_inq_pop+0x2f1/0xd80 [ 56.874959][ T8118] sctp_endpoint_bh_rcv+0x184/0x8d0 [ 56.880124][ T8118] ? sctp_endpoint_lookup_assoc+0x290/0x290 [ 56.885984][ T8118] ? rwlock_bug.part.0+0x90/0x90 [ 56.890885][ T8118] ? lock_acquire+0x190/0x410 [ 56.895532][ T8118] sctp_inq_push+0x1e4/0x280 [ 56.900087][ T8118] sctp_rcv+0x2807/0x3590 [ 56.904383][ T8118] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.910592][ T8118] ? sctp_addrs_lookup_transport+0x7a0/0x7a0 [ 56.916537][ T8118] ? __kasan_check_read+0x11/0x20 [ 56.921528][ T8118] ? mark_lock+0xc2/0x1220 [ 56.925908][ T8118] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 56.932113][ T8118] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 56.938238][ T8118] ? rcu_read_lock_held+0x9c/0xb0 [ 56.943237][ T8118] sctp6_rcv+0x17/0x30 [ 56.947282][ T8118] ip6_protocol_deliver_rcu+0x2fe/0x1660 [ 56.952884][ T8118] ip6_input_finish+0x84/0x170 [ 56.957626][ T8118] ip6_input+0xe4/0x3f0 [ 56.961746][ T8118] ? ip6_input_finish+0x170/0x170 [ 56.966734][ T8118] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 56.972852][ T8118] ? ip6_protocol_deliver_rcu+0x1660/0x1660 [ 56.978711][ T8118] ? rcu_read_lock_held_common+0x130/0x130 [ 56.984489][ T8118] ip6_sublist_rcv_finish+0x98/0x1e0 [ 56.989743][ T8118] ip6_sublist_rcv+0x80c/0xcf0 [ 56.994471][ T8118] ? ip6_rcv_finish+0x2f0/0x2f0 [ 56.999287][ T8118] ? ip6_rcv_finish_core.isra.0+0x560/0x560 [ 57.005148][ T8118] ? ip6_rcv_core.isra.0+0x1011/0x1bb0 [ 57.010579][ T8118] ipv6_list_rcv+0x373/0x4b0 [ 57.015134][ T8118] ? __kasan_check_read+0x11/0x20 [ 57.020124][ T8118] ? ipv6_rcv+0x420/0x420 [ 57.024417][ T8118] ? __lock_acquire+0x8a1/0x4e70 [ 57.029322][ T8118] ? __kasan_check_read+0x11/0x20 [ 57.034313][ T8118] ? ipv6_rcv+0x420/0x420 [ 57.038609][ T8118] __netif_receive_skb_list_core+0x5fc/0x9d0 [ 57.044556][ T8118] ? ktime_get_with_offset+0x13a/0x350 [ 57.049978][ T8118] ? ktime_get_with_offset+0x13a/0x350 [ 57.055403][ T8118] ? process_backlog+0x750/0x750 [ 57.060303][ T8118] ? lock_acquire+0x190/0x410 [ 57.064946][ T8118] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.071153][ T8118] ? __kasan_check_read+0x11/0x20 [ 57.076149][ T8118] netif_receive_skb_list_internal+0x7eb/0xe60 [ 57.082268][ T8118] ? __netif_receive_skb_list_core+0x9d0/0x9d0 [ 57.088389][ T8118] ? __kasan_check_read+0x11/0x20 [ 57.093390][ T8118] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 57.099599][ T8118] ? eth_gro_receive+0x890/0x890 [ 57.104501][ T8118] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.110447][ T8118] gro_normal_list.part.0+0x1e/0xb0 [ 57.115610][ T8118] napi_gro_frags+0xa6a/0xea0 [ 57.120256][ T8118] tun_get_user+0x2e98/0x3fa0 [ 57.124898][ T8118] ? __kasan_check_read+0x11/0x20 [ 57.129890][ T8118] ? __lock_acquire+0x8a1/0x4e70 [ 57.134793][ T8118] ? tun_build_skb.isra.0+0x1390/0x1390 [ 57.140309][ T8118] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.146518][ T8118] ? __kasan_check_read+0x11/0x20 [ 57.151514][ T8118] tun_chr_write_iter+0xbd/0x156 [ 57.156417][ T8118] do_iter_readv_writev+0x5f8/0x8f0 [ 57.161582][ T8118] ? no_seek_end_llseek_size+0x70/0x70 [ 57.167009][ T8118] ? apparmor_file_permission+0x25/0x30 [ 57.172522][ T8118] ? rw_verify_area+0x126/0x360 [ 57.177336][ T8118] do_iter_write+0x17b/0x380 [ 57.181892][ T8118] vfs_writev+0x1b3/0x2f0 [ 57.186190][ T8118] ? vfs_iter_write+0xb0/0xb0 [ 57.190836][ T8118] ? find_held_lock+0x35/0x130 [ 57.195570][ T8118] ? __do_page_fault+0x56a/0xdd0 [ 57.200473][ T8118] ? lock_downgrade+0x920/0x920 [ 57.205291][ T8118] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.211496][ T8118] ? __fget_light+0x1a9/0x230 [ 57.216141][ T8118] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 57.222432][ T8118] do_writev+0x15b/0x330 [ 57.226639][ T8118] ? vfs_writev+0x2f0/0x2f0 [ 57.231126][ T8118] ? do_syscall_64+0x26/0x760 [ 57.235776][ T8118] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 57.241806][ T8118] ? do_syscall_64+0x26/0x760 [ 57.246449][ T8118] __x64_sys_writev+0x75/0xb0 [ 57.251089][ T8118] do_syscall_64+0xfa/0x760 [ 57.255561][ T8118] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 57.261417][ T8118] RIP: 0033:0x441b10 [ 57.265278][ T8118] Code: 05 48 3d 01 f0 ff ff 0f 83 5d 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 3d 01 95 29 00 00 75 14 b8 14 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 34 09 fc ff c3 48 83 ec 08 e8 ba 2b 00 00 [ 57.284846][ T8118] RSP: 002b:00007fff073dc868 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 57.293219][ T8118] RAX: ffffffffffffffda RBX: 00007fff073dc880 RCX: 0000000000441b10 [ 57.301155][ T8118] RDX: 0000000000000001 RSI: 00007fff073dc8b0 RDI: 00000000000000f0 [ 57.309093][ T8118] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000004 [ 57.317039][ T8118] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000dd73 [ 57.324973][ T8118] R13: 0000000000402960 R14: 0000000000000000 R15: 0000000000000000 [ 57.332911][ T8118] Modules linked in: [ 57.336811][ T8118] ---[ end trace 854741a76294b26b ]--- [ 57.342265][ T8118] RIP: 0010:skb_pull+0xea/0x110 [ 57.347082][ T8118] Code: 9d c8 00 00 00 49 89 dc 49 89 9d c8 00 00 00 e8 7c dc da fb 4c 89 e0 5b 41 5c 41 5d 41 5e 5d c3 45 31 e4 eb ea e8 66 dc da fb <0f> 0b e8 6f b9 15 fc e9 44 ff ff ff e8 65 b9 15 fc eb 8a e8 7e b9 [ 57.366668][ T8118] RSP: 0018:ffff88809c8aee50 EFLAGS: 00010293 [ 57.372718][ T8118] RAX: ffff888096218100 RBX: 0000000000000004 RCX: ffffffff859753c6 [ 57.380676][ T8118] RDX: 0000000000000000 RSI: ffffffff8597541a RDI: 0000000000000004 [ 57.388634][ T8118] RBP: ffff88809c8aee70 R08: ffff888096218100 R09: fffffbfff14ee933 [ 57.396570][ T8118] R10: fffffbfff14ee932 R11: ffffffff8a774997 R12: 00000000a7a55dcc [ 57.404531][ T8118] R13: ffff88809c8af4c0 R14: 00000000ffff8880 R15: ffff88809c8af4c0 [ 57.412496][ T8118] FS: 0000555555f93880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 57.421413][ T8118] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.427970][ T8118] CR2: 0000000020000100 CR3: 0000000098ffe000 CR4: 00000000001406f0 [ 57.435936][ T8118] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.443891][ T8118] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.451846][ T8118] Kernel panic - not syncing: Fatal exception in interrupt [ 57.460052][ T8118] Kernel Offset: disabled [ 57.464360][ T8118] Rebooting in 86400 seconds..