[ 46.382344] audit: type=1800 audit(1580755258.986:30): pid=8127 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2490 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 51.282718] kauditd_printk_skb: 4 callbacks suppressed [ 51.282734] audit: type=1400 audit(1580755263.936:35): avc: denied { map } for pid=8298 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 '10.128.1.28' (ECDSA) to the list of known hosts. executing program [ 58.102191] audit: type=1400 audit(1580755270.756:36): avc: denied { map } for pid=8310 comm="syz-executor932" path="/root/syz-executor932677160" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 58.108429] kasan: CONFIG_KASAN_INLINE enabled [ 58.129675] audit: type=1400 audit(1580755270.756:37): avc: denied { create } for pid=8310 comm="syz-executor932" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 [ 58.133588] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 58.161658] audit: type=1400 audit(1580755270.756:38): avc: denied { write } for pid=8310 comm="syz-executor932" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 [ 58.169459] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 58.199415] CPU: 1 PID: 8310 Comm: syz-executor932 Not tainted 4.19.101-syzkaller #0 [ 58.207286] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.216809] RIP: 0010:nft_rhash_insert+0x9c/0x1140 [ 58.221726] Code: 00 00 f3 c7 40 08 f3 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 b0 11 68 fb 49 8d 7c 24 40 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 0f 85 fb 0e 00 00 49 8b 44 24 40 49 8d be c4 18 00 [ 58.240639] RSP: 0018:ffff88807f8e7028 EFLAGS: 00010203 [ 58.246010] RAX: 03fffffffe2738b5 RBX: ffff88807f8e7180 RCX: ffffffff85fc8468 [ 58.253279] RDX: 0000000000000000 RSI: ffffffff8602f9b0 RDI: 1ffffffff139c5ae [ 58.260549] RBP: ffff88807f8e7138 R08: ffff88808b750040 R09: ffff88807f8e71d0 [ 58.267867] R10: ffffed100ff1ce3f R11: ffff88807f8e71ff R12: 1ffffffff139c56e [ 58.275132] R13: ffff88807f8e7110 R14: ffff88807f8e71d0 R15: dffffc0000000000 [ 58.282536] FS: 0000000001831880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 58.291069] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.302299] CR2: 000055cb9ed55190 CR3: 000000009574a000 CR4: 00000000001406e0 [ 58.309589] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 58.316862] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 58.325084] Call Trace: [ 58.327688] ? nfnetlink_parse_nat_setup+0x218/0x450 [ 58.332817] ? __nf_nat_alloc_null_binding+0x164/0x1d0 [ 58.338104] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 58.343303] ? nft_hash_lookup+0x850/0x850 [ 58.347539] ? validate_nla+0x32f/0x810 [ 58.351509] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 58.357049] ? nla_parse+0x1fc/0x2f0 [ 58.360968] nfnetlink_parse_nat_setup+0x256/0x450 [ 58.365951] ? nf_nat_inet_fn+0x8b0/0x8b0 [ 58.370210] ctnetlink_parse_nat_setup+0xc5/0x660 [ 58.375106] ctnetlink_create_conntrack+0x532/0x1300 [ 58.380252] ? ctnetlink_dump_table+0x12e0/0x12e0 [ 58.385133] ? __nf_conntrack_confirm+0x31e0/0x31e0 [ 58.391056] ctnetlink_new_conntrack+0x527/0xe50 [ 58.395824] ? ctnetlink_create_conntrack+0x1300/0x1300 [ 58.401199] ? find_held_lock+0x35/0x130 [ 58.405554] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 58.410739] ? ctnetlink_create_conntrack+0x1300/0x1300 [ 58.416156] nfnetlink_rcv_msg+0xd0d/0xfcf [ 58.420401] ? nfnetlink_bind+0x2c0/0x2c0 [ 58.424541] ? avc_has_extended_perms+0x10f0/0x10f0 [ 58.429601] ? __save_stack_trace+0x99/0x100 [ 58.434283] ? selinux_ipv4_output+0x50/0x50 [ 58.438707] ? netlink_sendmsg+0x97b/0xd70 [ 58.442957] ? mark_held_locks+0x100/0x100 [ 58.447280] netlink_rcv_skb+0x17d/0x460 [ 58.451352] ? nfnetlink_bind+0x2c0/0x2c0 [ 58.455496] ? netlink_ack+0xb30/0xb30 [ 58.459384] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 58.464925] ? ns_capable_common+0x93/0x100 [ 58.469234] ? ns_capable+0x20/0x30 [ 58.472854] ? __netlink_ns_capable+0x104/0x140 [ 58.478594] nfnetlink_rcv+0x1c0/0x460 [ 58.482481] ? nfnetlink_rcv_batch+0x1750/0x1750 [ 58.487256] ? netlink_deliver_tap+0x254/0xc20 [ 58.492061] ? kasan_check_write+0x14/0x20 [ 58.496346] netlink_unicast+0x53a/0x730 [ 58.500564] ? netlink_attachskb+0x770/0x770 [ 58.504978] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 58.510516] netlink_sendmsg+0x8ae/0xd70 [ 58.514626] ? netlink_unicast+0x730/0x730 [ 58.518911] ? selinux_socket_sendmsg+0x36/0x40 [ 58.523586] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 58.529218] ? security_socket_sendmsg+0x8d/0xc0 [ 58.533986] ? netlink_unicast+0x730/0x730 [ 58.538218] sock_sendmsg+0xd7/0x130 [ 58.541919] ___sys_sendmsg+0x803/0x920 [ 58.545898] ? copy_msghdr_from_user+0x430/0x430 [ 58.550683] ? rcu_read_lock_sched_held+0x110/0x130 [ 58.555690] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 58.561246] ? percpu_counter_add_batch+0x13c/0x190 [ 58.566466] ? __fd_install+0x1bc/0x640 [ 58.570482] ? find_held_lock+0x35/0x130 [ 58.574593] ? __fd_install+0x1bc/0x640 [ 58.578565] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 58.584091] ? __fget_light+0x1a9/0x230 [ 58.588055] ? __fdget+0x1b/0x20 [ 58.591431] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 58.596964] __sys_sendmsg+0x105/0x1d0 [ 58.600860] ? __ia32_sys_shutdown+0x80/0x80 [ 58.605275] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 58.610028] ? do_syscall_64+0x26/0x620 [ 58.614103] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 58.619665] ? do_syscall_64+0x26/0x620 [ 58.623636] __x64_sys_sendmsg+0x78/0xb0 [ 58.627700] do_syscall_64+0xfd/0x620 [ 58.631506] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 58.636693] RIP: 0033:0x440229 [ 58.639877] 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 [ 58.659734] RSP: 002b:00007fffdf2976b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 58.667440] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440229 [ 58.674847] RDX: 0000000000000000 RSI: 0000000020000640 RDI: 0000000000000003 [ 58.682359] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 58.689790] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401ab0 [ 58.697074] R13: 0000000000401b40 R14: 0000000000000000 R15: 0000000000000000 [ 58.704725] Modules linked in: [ 58.708514] ---[ end trace 0a5ca38967a90b02 ]--- [ 58.713434] RIP: 0010:nft_rhash_insert+0x9c/0x1140 [ 58.718445] Code: 00 00 f3 c7 40 08 f3 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 b0 11 68 fb 49 8d 7c 24 40 48 89 f8 48 c1 e8 03 <42> 80 3c 38 00 0f 85 fb 0e 00 00 49 8b 44 24 40 49 8d be c4 18 00 [ 58.737700] RSP: 0018:ffff88807f8e7028 EFLAGS: 00010203 [ 58.743353] RAX: 03fffffffe2738b5 RBX: ffff88807f8e7180 RCX: ffffffff85fc8468 [ 58.750701] RDX: 0000000000000000 RSI: ffffffff8602f9b0 RDI: 1ffffffff139c5ae [ 58.758031] RBP: ffff88807f8e7138 R08: ffff88808b750040 R09: ffff88807f8e71d0 [ 58.765403] R10: ffffed100ff1ce3f R11: ffff88807f8e71ff R12: 1ffffffff139c56e [ 58.772878] R13: ffff88807f8e7110 R14: ffff88807f8e71d0 R15: dffffc0000000000 [ 58.780855] FS: 0000000001831880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 58.789158] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 58.795087] CR2: 000055cb9ed46500 CR3: 000000009574a000 CR4: 00000000001406f0 [ 58.802841] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 58.810175] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 58.817606] Kernel panic - not syncing: Fatal exception [ 58.824504] Kernel Offset: disabled [ 58.828182] Rebooting in 86400 seconds..