[ 34.915296] audit: type=1800 audit(1551765103.224:27): pid=7488 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 34.958356] audit: type=1800 audit(1551765103.264:28): pid=7488 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. [ 35.389871] audit: type=1800 audit(1551765103.694:29): pid=7488 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 [ 35.409854] audit: type=1800 audit(1551765103.694:30): pid=7488 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 '10.128.0.66' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 44.846110] kasan: CONFIG_KASAN_INLINE enabled [ 44.851024] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 44.858904] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 44.865140] CPU: 1 PID: 7641 Comm: syz-executor946 Not tainted 5.0.0-rc7+ #95 [ 44.872395] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.881747] RIP: 0010:xsk_diag_dump+0xdcb/0x13a0 [ 44.886498] Code: 8d be c0 04 00 00 48 89 f8 48 c1 e8 03 42 80 3c 20 00 0f 85 39 04 00 00 49 8b 96 c0 04 00 00 48 8d 7a 14 48 89 f8 48 c1 e8 03 <42> 0f b6 0c 20 48 89 f8 83 e0 07 83 c0 03 38 c8 7c 08 84 c9 0f 85 [ 44.905464] RSP: 0018:ffff888090bcf2d8 EFLAGS: 00010203 [ 44.910814] RAX: 0000000000000002 RBX: ffff8880a0aacbc0 RCX: ffffffff86ffdc3c [ 44.918078] RDX: 0000000000000000 RSI: ffffffff86ffdc70 RDI: 0000000000000014 [ 44.925327] RBP: ffff888090bcf438 R08: ffff88808e04a700 R09: ffffed1011c74174 [ 44.932597] R10: ffffed1011c74173 R11: ffff88808e3a0b9f R12: dffffc0000000000 [ 44.939847] R13: ffff888093a6d818 R14: ffff88808e365240 R15: ffff88808e3a0b40 [ 44.947099] FS: 00000000011ea880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 44.955306] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.961168] CR2: 0000000020000080 CR3: 000000008fa13000 CR4: 00000000001406e0 [ 44.968583] Call Trace: [ 44.971160] ? xsk_diag_handler_dump+0x250/0x250 [ 44.975905] ? __alloc_skb+0x3cd/0x5e0 [ 44.979779] ? kasan_check_write+0x14/0x20 [ 44.984000] netlink_dump+0x55d/0xfb0 [ 44.987785] ? netlink_broadcast+0x50/0x50 [ 44.992006] ? lock_downgrade+0x810/0x810 [ 44.996174] __netlink_dump_start+0x5b4/0x7e0 [ 45.000656] xsk_diag_handler_dump+0x1b2/0x250 [ 45.005222] ? xsk_reuseq_destroy+0x80/0x80 [ 45.009554] ? sock_diag_rcv+0x1c/0x40 [ 45.013449] ? xsk_diag_handler_dump+0x250/0x250 [ 45.018186] sock_diag_rcv_msg+0x322/0x410 [ 45.022407] netlink_rcv_skb+0x17a/0x460 [ 45.026452] ? sock_diag_bind+0x80/0x80 [ 45.030408] ? netlink_ack+0xb50/0xb50 [ 45.034280] ? kasan_check_read+0x11/0x20 [ 45.038414] sock_diag_rcv+0x2b/0x40 [ 45.042111] netlink_unicast+0x536/0x720 [ 45.046155] ? netlink_attachskb+0x770/0x770 [ 45.050567] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 45.055568] ? __check_object_size+0x3d/0x42f [ 45.060063] netlink_sendmsg+0x8ae/0xd70 [ 45.064108] ? netlink_unicast+0x720/0x720 [ 45.068328] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 45.073156] ? apparmor_socket_sendmsg+0x2a/0x30 [ 45.077915] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 45.083434] ? security_socket_sendmsg+0x93/0xc0 [ 45.088172] ? netlink_unicast+0x720/0x720 [ 45.092429] sock_sendmsg+0xdd/0x130 [ 45.096129] sock_write_iter+0x27c/0x3e0 [ 45.100170] ? sock_sendmsg+0x130/0x130 [ 45.104130] do_iter_readv_writev+0x5e0/0x8e0 [ 45.108618] ? vfs_dedupe_file_range+0x780/0x780 [ 45.113358] ? apparmor_file_permission+0x25/0x30 [ 45.118184] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 45.123716] ? rw_verify_area+0x118/0x360 [ 45.127841] do_iter_write+0x184/0x610 [ 45.131710] ? dup_iter+0x260/0x260 [ 45.135322] vfs_writev+0x1b3/0x2f0 [ 45.138932] ? vfs_iter_write+0xb0/0xb0 [ 45.142902] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 45.148424] ? xskq_create+0x133/0x190 [ 45.152294] ? mutex_unlock+0xd/0x10 [ 45.155993] ? xsk_setsockopt+0x13b/0x480 [ 45.160154] ? xsk_init_queue+0xf0/0xf0 [ 45.164130] ? aa_sock_opt_perm.isra.0+0xa1/0x130 [ 45.168970] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 45.174489] ? __fget_light+0x1a9/0x230 [ 45.178445] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 45.183993] do_writev+0xf6/0x290 [ 45.187430] ? vfs_writev+0x2f0/0x2f0 [ 45.191213] ? do_syscall_64+0x26/0x610 [ 45.195168] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 45.200512] ? do_syscall_64+0x26/0x610 [ 45.204470] __x64_sys_writev+0x75/0xb0 [ 45.208423] do_syscall_64+0x103/0x610 [ 45.212304] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 45.217476] RIP: 0033:0x440139 [ 45.220666] 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 [ 45.239547] RSP: 002b:00007ffcc966cc18 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 45.247251] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440139 [ 45.254505] RDX: 0000000000000001 RSI: 0000000020000080 RDI: 0000000000000003 [ 45.261753] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 45.269019] R10: 0000000000000004 R11: 0000000000000246 R12: 00000000004019c0 [ 45.276272] R13: 0000000000401a50 R14: 0000000000000000 R15: 0000000000000000 [ 45.283523] Modules linked in: [ 45.288543] ---[ end trace 460a3c24d0a656c9 ]--- [ 45.293404] RIP: 0010:xsk_diag_dump+0xdcb/0x13a0 [ 45.298159] Code: 8d be c0 04 00 00 48 89 f8 48 c1 e8 03 42 80 3c 20 00 0f 85 39 04 00 00 49 8b 96 c0 04 00 00 48 8d 7a 14 48 89 f8 48 c1 e8 03 <42> 0f b6 0c 20 48 89 f8 83 e0 07 83 c0 03 38 c8 7c 08 84 c9 0f 85 [ 45.317078] RSP: 0018:ffff888090bcf2d8 EFLAGS: 00010203 [ 45.322443] RAX: 0000000000000002 RBX: ffff8880a0aacbc0 RCX: ffffffff86ffdc3c [ 45.329843] RDX: 0000000000000000 RSI: ffffffff86ffdc70 RDI: 0000000000000014 [ 45.337155] RBP: ffff888090bcf438 R08: ffff88808e04a700 R09: ffffed1011c74174 [ 45.344448] R10: ffffed1011c74173 R11: ffff88808e3a0b9f R12: dffffc0000000000 [ 45.351716] R13: ffff888093a6d818 R14: ffff88808e365240 R15: ffff88808e3a0b40 [ 45.359092] FS: 00000000011ea880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 45.367351] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 45.373263] CR2: 0000000001d22000 CR3: 000000008fa13000 CR4: 00000000001406f0 [ 45.380560] Kernel panic - not syncing: Fatal exception [ 45.386589] Kernel Offset: disabled [ 45.390205] Rebooting in 86400 seconds..