Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [ 101.745253][ T27] audit: type=1400 audit(1579470896.777:37): avc: denied { watch } for pid=10338 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 [ 101.791204][ T27] audit: type=1400 audit(1579470896.797:38): avc: denied { watch } for pid=10338 comm="restorecond" path="/etc/selinux/restorecond.conf" dev="sda1" ino=2232 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [....] 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 Warning: Permanently added '10.128.0.124' (ECDSA) to the list of known hosts. executing program executing program executing program executing program syzkaller login: [ 120.649262][ T27] kauditd_printk_skb: 3 callbacks suppressed [ 120.649278][ T27] audit: type=1400 audit(1579470915.677:42): avc: denied { map } for pid=10440 comm="syz-executor096" path="/root/syz-executor096997315" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 120.685970][ T27] audit: type=1400 audit(1579470915.677:43): avc: denied { create } for pid=10441 comm="syz-executor096" 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 [ 120.711390][ T27] audit: type=1400 audit(1579470915.697:44): avc: denied { write } for pid=10441 comm="syz-executor096" 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 121.731158][ C1] ================================================================== [ 121.739846][ C1] BUG: KASAN: slab-out-of-bounds in bitmap_port_gc+0x112/0x4f0 [ 121.747394][ C1] Read of size 8 at addr ffff8880a12148c0 by task sshd/10438 [ 121.754754][ C1] [ 121.757078][ C1] CPU: 1 PID: 10438 Comm: sshd Not tainted 5.5.0-rc6-syzkaller #0 [ 121.764867][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 121.775173][ C1] Call Trace: [ 121.778441][ C1] [ 121.781377][ C1] dump_stack+0x197/0x210 [ 121.786334][ C1] ? bitmap_port_gc+0x112/0x4f0 [ 121.792665][ C1] print_address_description.constprop.0.cold+0xd4/0x30b [ 121.800419][ C1] ? bitmap_port_gc+0x112/0x4f0 [ 121.806062][ C1] ? bitmap_port_gc+0x112/0x4f0 [ 121.811114][ C1] __kasan_report.cold+0x1b/0x41 [ 121.816225][ C1] ? bitmap_port_gc+0x112/0x4f0 [ 121.821386][ C1] kasan_report+0x12/0x20 [ 121.825789][ C1] check_memory_region+0x134/0x1a0 [ 121.831242][ C1] __kasan_check_read+0x11/0x20 [ 121.836105][ C1] bitmap_port_gc+0x112/0x4f0 [ 121.840808][ C1] call_timer_fn+0x1ac/0x780 [ 121.846367][ C1] ? bitmap_port_test+0x170/0x170 [ 121.851520][ C1] ? msleep_interruptible+0x150/0x150 [ 121.857152][ C1] ? run_timer_softirq+0x6b1/0x1790 [ 121.862351][ C1] ? trace_hardirqs_on+0x67/0x240 [ 121.867373][ C1] ? bitmap_port_test+0x170/0x170 [ 121.872969][ C1] ? bitmap_port_test+0x170/0x170 [ 121.878192][ C1] run_timer_softirq+0x6c3/0x1790 [ 121.883373][ C1] ? add_timer+0x930/0x930 [ 121.888082][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 121.894532][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 121.900609][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 121.906847][ C1] __do_softirq+0x262/0x98c [ 121.912114][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 121.918011][ C1] irq_exit+0x19b/0x1e0 [ 121.922369][ C1] smp_apic_timer_interrupt+0x1a3/0x610 [ 121.927916][ C1] apic_timer_interrupt+0xf/0x20 [ 121.932836][ C1] [ 121.935760][ C1] RIP: 0033:0x55e51d06c5d0 [ 121.940161][ C1] Code: 68 3b 00 00 00 e9 30 fc ff ff ff 25 a2 0b 27 00 68 3c 00 00 00 e9 20 fc ff ff ff 25 9a 0b 27 00 68 3d 00 00 00 e9 10 fc ff ff 25 92 0b 27 00 68 3e 00 00 00 e9 00 fc ff ff ff 25 8a 0b 27 00 [ 121.961619][ C1] RSP: 002b:00007ffd38c68b88 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 [ 121.970337][ C1] RAX: 00000000000001a4 RBX: 00007ffd38c68c10 RCX: 0000000000000000 [ 121.978411][ C1] RDX: 000055e51e3adb20 RSI: 000055e51e3adb40 RDI: 000000000000000c [ 121.986470][ C1] RBP: 000055e51d2df8dc R08: 00007ffd38c68bb0 R09: 0101010101010101 [ 121.996009][ C1] R10: 0000000000000001 R11: 0000000000000000 R12: 00007ffd38c68c18 [ 122.006529][ C1] R13: 0000000000000000 R14: 00007ffd38c68c08 R15: 00007ffd38c68c0c [ 122.020701][ C1] [ 122.023228][ C1] Allocated by task 10441: [ 122.027644][ C1] save_stack+0x23/0x90 [ 122.031795][ C1] __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 122.037643][ C1] kasan_kmalloc+0x9/0x10 [ 122.041987][ C1] __kmalloc+0x163/0x770 [ 122.046883][ C1] ip_set_alloc+0x38/0x5e [ 122.051655][ C1] bitmap_port_create+0x3dc/0x7c0 [ 122.056777][ C1] ip_set_create+0x6f1/0x1500 [ 122.061532][ C1] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 122.066995][ C1] netlink_rcv_skb+0x177/0x450 [ 122.071756][ C1] nfnetlink_rcv+0x1ba/0x460 [ 122.076360][ C1] netlink_unicast+0x58c/0x7d0 [ 122.081121][ C1] netlink_sendmsg+0x91c/0xea0 [ 122.086197][ C1] sock_sendmsg+0xd7/0x130 [ 122.091195][ C1] ____sys_sendmsg+0x753/0x880 [ 122.096064][ C1] ___sys_sendmsg+0x100/0x170 [ 122.100755][ C1] __sys_sendmsg+0x105/0x1d0 [ 122.105446][ C1] __x64_sys_sendmsg+0x78/0xb0 [ 122.110204][ C1] do_syscall_64+0xfa/0x790 [ 122.114749][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 122.120737][ C1] [ 122.123053][ C1] Freed by task 10215: [ 122.127158][ C1] save_stack+0x23/0x90 [ 122.131297][ C1] __kasan_slab_free+0x102/0x150 [ 122.136242][ C1] kasan_slab_free+0xe/0x10 [ 122.140746][ C1] kfree+0x10a/0x2c0 [ 122.144692][ C1] tomoyo_supervisor+0xc2c/0xef0 [ 122.149752][ C1] tomoyo_env_perm+0x18e/0x210 [ 122.155035][ C1] tomoyo_find_next_domain+0x1354/0x1f6c [ 122.160665][ C1] tomoyo_bprm_check_security+0x124/0x1a0 [ 122.166382][ C1] security_bprm_check+0x63/0xb0 [ 122.171437][ C1] search_binary_handler+0x71/0x570 [ 122.176811][ C1] __do_execve_file.isra.0+0x1329/0x22b0 [ 122.182564][ C1] __x64_sys_execve+0x8f/0xc0 [ 122.187230][ C1] do_syscall_64+0xfa/0x790 [ 122.191744][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 122.197800][ C1] [ 122.200202][ C1] The buggy address belongs to the object at ffff8880a12148c0 [ 122.200202][ C1] which belongs to the cache kmalloc-32 of size 32 [ 122.214242][ C1] The buggy address is located 0 bytes inside of [ 122.214242][ C1] 32-byte region [ffff8880a12148c0, ffff8880a12148e0) [ 122.227293][ C1] The buggy address belongs to the page: [ 122.232976][ C1] page:ffffea0002848500 refcount:1 mapcount:0 mapping:ffff8880aa4001c0 index:0xffff8880a1214fc1 [ 122.243634][ C1] raw: 00fffe0000000200 ffffea0002739fc8 ffffea00028b1208 ffff8880aa4001c0 [ 122.252225][ C1] raw: ffff8880a1214fc1 ffff8880a1214000 0000000100000038 0000000000000000 [ 122.260878][ C1] page dumped because: kasan: bad access detected [ 122.267630][ C1] [ 122.269962][ C1] Memory state around the buggy address: [ 122.278023][ C1] ffff8880a1214780: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 122.286111][ C1] ffff8880a1214800: fb fb fb fb fc fc fc fc 00 00 01 fc fc fc fc fc [ 122.294404][ C1] >ffff8880a1214880: fb fb fb fb fc fc fc fc 04 fc fc fc fc fc fc fc [ 122.302504][ C1] ^ [ 122.308671][ C1] ffff8880a1214900: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 122.316734][ C1] ffff8880a1214980: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc [ 122.325830][ C1] ================================================================== [ 122.333890][ C1] Disabling lock debugging due to kernel taint [ 122.340112][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 122.346707][ C1] CPU: 1 PID: 10438 Comm: sshd Tainted: G B 5.5.0-rc6-syzkaller #0 [ 122.357371][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 122.367780][ C1] Call Trace: [ 122.371074][ C1] [ 122.374170][ C1] dump_stack+0x197/0x210 [ 122.378657][ C1] panic+0x2e3/0x75c [ 122.382560][ C1] ? add_taint.cold+0x16/0x16 [ 122.387263][ C1] ? retint_kernel+0x2b/0x2b [ 122.391989][ C1] ? trace_hardirqs_on+0x5e/0x240 [ 122.397015][ C1] ? bitmap_port_gc+0x112/0x4f0 [ 122.401887][ C1] end_report+0x47/0x4f [ 122.406179][ C1] ? bitmap_port_gc+0x112/0x4f0 [ 122.411030][ C1] __kasan_report.cold+0xe/0x41 [ 122.415891][ C1] ? bitmap_port_gc+0x112/0x4f0 [ 122.420741][ C1] kasan_report+0x12/0x20 [ 122.425677][ C1] check_memory_region+0x134/0x1a0 [ 122.430805][ C1] __kasan_check_read+0x11/0x20 [ 122.435664][ C1] bitmap_port_gc+0x112/0x4f0 [ 122.440406][ C1] call_timer_fn+0x1ac/0x780 [ 122.445195][ C1] ? bitmap_port_test+0x170/0x170 [ 122.450311][ C1] ? msleep_interruptible+0x150/0x150 [ 122.455768][ C1] ? run_timer_softirq+0x6b1/0x1790 [ 122.460971][ C1] ? trace_hardirqs_on+0x67/0x240 [ 122.465993][ C1] ? bitmap_port_test+0x170/0x170 [ 122.471020][ C1] ? bitmap_port_test+0x170/0x170 [ 122.476056][ C1] run_timer_softirq+0x6c3/0x1790 [ 122.481349][ C1] ? add_timer+0x930/0x930 [ 122.485865][ C1] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 122.492139][ C1] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 122.497697][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 122.503777][ C1] __do_softirq+0x262/0x98c [ 122.508296][ C1] ? sched_clock_cpu+0x1b/0x1b0 [ 122.513156][ C1] irq_exit+0x19b/0x1e0 [ 122.517334][ C1] smp_apic_timer_interrupt+0x1a3/0x610 [ 122.524107][ C1] apic_timer_interrupt+0xf/0x20 [ 122.529113][ C1] [ 122.532085][ C1] RIP: 0033:0x55e51d06c5d0 [ 122.536507][ C1] Code: 68 3b 00 00 00 e9 30 fc ff ff ff 25 a2 0b 27 00 68 3c 00 00 00 e9 20 fc ff ff ff 25 9a 0b 27 00 68 3d 00 00 00 e9 10 fc ff ff 25 92 0b 27 00 68 3e 00 00 00 e9 00 fc ff ff ff 25 8a 0b 27 00 [ 122.556224][ C1] RSP: 002b:00007ffd38c68b88 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 [ 122.564749][ C1] RAX: 00000000000001a4 RBX: 00007ffd38c68c10 RCX: 0000000000000000 [ 122.572937][ C1] RDX: 000055e51e3adb20 RSI: 000055e51e3adb40 RDI: 000000000000000c [ 122.581452][ C1] RBP: 000055e51d2df8dc R08: 00007ffd38c68bb0 R09: 0101010101010101 [ 122.589427][ C1] R10: 0000000000000001 R11: 0000000000000000 R12: 00007ffd38c68c18 [ 122.597411][ C1] R13: 0000000000000000 R14: 00007ffd38c68c08 R15: 00007ffd38c68c0c [ 122.606095][ C1] Kernel Offset: disabled [ 122.610423][ C1] Rebooting in 86400 seconds..