[ 89.054594][ T27] audit: type=1800 audit(1578464644.933:25): pid=9605 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 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. [ 90.181369][ T27] kauditd_printk_skb: 3 callbacks suppressed [ 90.181382][ T27] audit: type=1800 audit(1578464646.063:29): pid=9605 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 [ 90.208213][ T27] audit: type=1800 audit(1578464646.063:30): pid=9605 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 '10.128.0.51' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 101.909148][ T9756] kasan: CONFIG_KASAN_INLINE enabled [ 101.914606][ T9756] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 101.922667][ T9756] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 101.929585][ T9756] CPU: 1 PID: 9756 Comm: syz-executor821 Not tainted 5.5.0-rc5-syzkaller #0 [ 101.938610][ T9756] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 101.948783][ T9756] RIP: 0010:hash_netnet4_uadt+0x1ff/0xdf0 [ 101.954519][ T9756] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 e8 09 00 00 48 89 da 45 8b 6d 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 ad [ 101.974507][ T9756] RSP: 0018:ffffc90001d67170 EFLAGS: 00010246 [ 101.980562][ T9756] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 101.988514][ T9756] RDX: 0000000000000000 RSI: ffffffff868394cc RDI: ffff88809306ac64 [ 101.996477][ T9756] RBP: ffffc90001d672a8 R08: 0000000000000000 R09: 0000000000000000 [ 102.004425][ T9756] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: ffffc90001d67310 [ 102.012689][ T9756] R13: 00000000d3650000 R14: ffffc90001d671f0 R15: ffff8880a4857300 [ 102.020744][ T9756] FS: 0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:000000000900d840 [ 102.029675][ T9756] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 102.036442][ T9756] CR2: 0000000020000f92 CR3: 00000000953d5000 CR4: 00000000001406e0 [ 102.044471][ T9756] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 102.052582][ T9756] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 102.060663][ T9756] Call Trace: [ 102.063957][ T9756] ? hash_netnet6_test+0x17d0/0x17d0 [ 102.069234][ T9756] ? hash_netnet6_uadt+0xae0/0xae0 [ 102.074348][ T9756] ? nla_memcpy+0xb0/0xb0 [ 102.078665][ T9756] ? lock_acquire+0x190/0x410 [ 102.083659][ T9756] ? __kasan_check_read+0x11/0x20 [ 102.088675][ T9756] ip_set_utest+0x55b/0x890 [ 102.093166][ T9756] ? ip_set_put_byindex+0x490/0x490 [ 102.098367][ T9756] ? __mutex_lock+0x458/0x13c0 [ 102.103399][ T9756] ? ip_set_put_byindex+0x490/0x490 [ 102.108579][ T9756] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 102.113585][ T9756] ? nfnetlink_bind+0x2c0/0x2c0 [ 102.118419][ T9756] ? __kasan_check_read+0x11/0x20 [ 102.123437][ T9756] ? __lock_acquire+0x8a0/0x4a00 [ 102.128353][ T9756] ? save_stack+0x5c/0x90 [ 102.132683][ T9756] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 102.138922][ T9756] ? apparmor_capable+0x497/0x900 [ 102.144067][ T9756] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 102.150298][ T9756] ? __kasan_check_read+0x11/0x20 [ 102.155300][ T9756] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 102.160740][ T9756] netlink_rcv_skb+0x177/0x450 [ 102.165483][ T9756] ? nfnetlink_bind+0x2c0/0x2c0 [ 102.170315][ T9756] ? netlink_ack+0xb50/0xb50 [ 102.174904][ T9756] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 102.181140][ T9756] ? ns_capable_common+0x93/0x100 [ 102.186420][ T9756] ? ns_capable+0x20/0x30 [ 102.190756][ T9756] ? __netlink_ns_capable+0x104/0x140 [ 102.196137][ T9756] nfnetlink_rcv+0x1ba/0x460 [ 102.200749][ T9756] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 102.206191][ T9756] ? netlink_deliver_tap+0x24a/0xbe0 [ 102.211486][ T9756] ? __kasan_check_write+0x14/0x20 [ 102.216639][ T9756] netlink_unicast+0x58c/0x7d0 [ 102.221516][ T9756] ? netlink_attachskb+0x870/0x870 [ 102.226623][ T9756] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 102.232479][ T9756] ? __check_object_size+0x3d/0x437 [ 102.237676][ T9756] netlink_sendmsg+0x91c/0xea0 [ 102.242429][ T9756] ? netlink_unicast+0x7d0/0x7d0 [ 102.247352][ T9756] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 102.252878][ T9756] ? apparmor_socket_sendmsg+0x2a/0x30 [ 102.258494][ T9756] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 102.264725][ T9756] ? security_socket_sendmsg+0x8d/0xc0 [ 102.270278][ T9756] ? netlink_unicast+0x7d0/0x7d0 [ 102.275198][ T9756] sock_sendmsg+0xd7/0x130 [ 102.279593][ T9756] ____sys_sendmsg+0x753/0x880 [ 102.284335][ T9756] ? kernel_sendmsg+0x50/0x50 [ 102.289068][ T9756] ? lockdep_init_map+0x1be/0x6d0 [ 102.294237][ T9756] ___sys_sendmsg+0x100/0x170 [ 102.298912][ T9756] ? sendmsg_copy_msghdr+0x70/0x70 [ 102.304006][ T9756] ? __kasan_check_read+0x11/0x20 [ 102.309023][ T9756] ? __lock_acquire+0x8a0/0x4a00 [ 102.313941][ T9756] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 102.320163][ T9756] ? __this_cpu_preempt_check+0x35/0x190 [ 102.325776][ T9756] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 102.332028][ T9756] ? percpu_counter_add_batch+0x13c/0x190 [ 102.337895][ T9756] ? __fd_install+0x1bc/0x640 [ 102.342562][ T9756] ? find_held_lock+0x35/0x130 [ 102.348132][ T9756] ? __fd_install+0x1bc/0x640 [ 102.352823][ T9756] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 102.359231][ T9756] ? __fget_light+0x1a9/0x230 [ 102.363895][ T9756] ? __fdget+0x1b/0x20 [ 102.367947][ T9756] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 102.374170][ T9756] __sys_sendmsg+0x105/0x1d0 [ 102.378796][ T9756] ? __sys_sendmsg_sock+0xc0/0xc0 [ 102.383890][ T9756] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 102.389356][ T9756] ? do_fast_syscall_32+0xd1/0xe16 [ 102.394461][ T9756] ? entry_SYSENTER_compat+0x70/0x7f [ 102.399737][ T9756] ? do_fast_syscall_32+0xd1/0xe16 [ 102.404834][ T9756] __ia32_compat_sys_sendmsg+0x7a/0xb0 [ 102.410276][ T9756] do_fast_syscall_32+0x27b/0xe16 [ 102.415289][ T9756] entry_SYSENTER_compat+0x70/0x7f [ 102.420382][ T9756] RIP: 0023:0xf7f18a39 [ 102.424430][ T9756] Code: 00 00 00 89 d3 5b 5e 5f 5d c3 b8 80 96 98 00 eb c4 8b 04 24 c3 8b 1c 24 c3 8b 34 24 c3 8b 3c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 102.444011][ T9756] RSP: 002b:00000000ffdab02c EFLAGS: 00000202 ORIG_RAX: 0000000000000172 [ 102.452416][ T9756] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020000140 [ 102.460624][ T9756] RDX: 0000000020000000 RSI: 00000000080eb080 RDI: 00000000ffdab080 [ 102.468678][ T9756] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 102.476785][ T9756] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 102.484886][ T9756] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 102.492843][ T9756] Modules linked in: [ 102.496795][ T9756] ---[ end trace 9f7191569decb7df ]--- [ 102.502365][ T9756] RIP: 0010:hash_netnet4_uadt+0x1ff/0xdf0 [ 102.508196][ T9756] Code: 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 e8 09 00 00 48 89 da 45 8b 6d 04 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 14 02 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 ad [ 102.528162][ T9756] RSP: 0018:ffffc90001d67170 EFLAGS: 00010246 [ 102.534212][ T9756] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 102.542354][ T9756] RDX: 0000000000000000 RSI: ffffffff868394cc RDI: ffff88809306ac64 [ 102.550637][ T9756] RBP: ffffc90001d672a8 R08: 0000000000000000 R09: 0000000000000000 [ 102.558806][ T9756] R10: ffffed1015d2703c R11: ffff8880ae9381e3 R12: ffffc90001d67310 [ 102.566876][ T9756] R13: 00000000d3650000 R14: ffffc90001d671f0 R15: ffff8880a4857300 [ 102.574863][ T9756] FS: 0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:000000000900d840 [ 102.583968][ T9756] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 102.591151][ T9756] CR2: 0000000020000f92 CR3: 00000000953d5000 CR4: 00000000001406e0 [ 102.599520][ T9756] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 102.607527][ T9756] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 102.615528][ T9756] Kernel panic - not syncing: Fatal exception in interrupt [ 102.624253][ T9756] Kernel Offset: disabled [ 102.628643][ T9756] Rebooting in 86400 seconds..