[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 18.432875] audit: type=1400 audit(1519121146.268:6): avc: denied { map } for pid=4130 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.225' (ECDSA) to the list of known hosts. syzkaller login: [ 24.716294] audit: type=1400 audit(1519121152.551:7): avc: denied { map } for pid=4144 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/02/20 10:05:52 parsed 1 programs 2018/02/20 10:05:52 executed programs: 0 [ 24.987143] audit: type=1400 audit(1519121152.822:8): avc: denied { map } for pid=4144 comm="syz-execprog" path="/root/syzkaller-shm936165717" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 25.005000] IPVS: ftp: loaded support on port[0] = 21 [ 25.245747] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 25.655629] [ 25.657314] ===================================== [ 25.662134] WARNING: bad unlock balance detected! [ 25.666950] 4.16.0-rc1+ #232 Not tainted [ 25.670977] ------------------------------------- [ 25.675791] kworker/1:1/23 is trying to release lock (rcu_read_lock_bh) at: [ 25.682880] [] hashlimit_mt_common.isra.10+0x1beb/0x2610 [ 25.689862] but there are no more locks to release! [ 25.694843] [ 25.694843] other info that might help us debug this: [ 25.701478] 5 locks held by kworker/1:1/23: [ 25.705765] #0: ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<000000003be8901f>] process_one_work+0xaaf/0x1af0 [ 25.716581] #1: ((work_completion)(&(&ifa->dad_work)->work)){+.+.}, at: [<000000006437a7b8>] process_one_work+0xb01/0x1af0 [ 25.727912] #2: (rtnl_mutex){+.+.}, at: [<00000000001340fa>] rtnl_lock+0x17/0x20 [ 25.735597] #3: (rcu_read_lock){....}, at: [<00000000359495ee>] ndisc_send_skb+0x826/0x1370 [ 25.744240] #4: (rcu_read_lock){....}, at: [<00000000840b2de6>] nf_hook.constprop.27+0x0/0x830 [ 25.753142] [ 25.753142] stack backtrace: [ 25.757612] CPU: 1 PID: 23 Comm: kworker/1:1 Not tainted 4.16.0-rc1+ #232 [ 25.764508] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.773840] Workqueue: ipv6_addrconf addrconf_dad_work [ 25.779084] Call Trace: [ 25.781648] dump_stack+0x194/0x257 [ 25.785247] ? arch_local_irq_restore+0x53/0x53 [ 25.789893] ? hashlimit_mt_common.isra.10+0x1beb/0x2610 [ 25.795316] print_unlock_imbalance_bug+0x12f/0x140 [ 25.800304] lock_release+0x6fe/0xa40 [ 25.804078] ? hashlimit_mt_common.isra.10+0x1beb/0x2610 [ 25.809499] ? lock_downgrade+0x980/0x980 [ 25.813618] ? lock_release+0xa40/0xa40 [ 25.817563] ? __raw_spin_lock_init+0x1c/0x100 [ 25.823220] ? do_raw_spin_trylock+0x190/0x190 [ 25.827782] hashlimit_mt_common.isra.10+0x1c08/0x2610 [ 25.833036] ? dsthash_find+0x5b0/0x5b0 [ 25.836985] ? __lock_acquire+0x664/0x3e00 [ 25.841193] ? ret_from_fork+0x3a/0x50 [ 25.845056] ? print_irqtrace_events+0x270/0x270 [ 25.849789] ? __unwind_start+0x169/0x330 [ 25.853909] hashlimit_mt+0x78/0x90 [ 25.857506] ? hashlimit_mt+0x78/0x90 [ 25.861280] ip6t_do_table+0x98d/0x1a30 [ 25.865229] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.870393] ? ip6t_error+0x60/0x60 [ 25.873993] ? check_noncircular+0x20/0x20 [ 25.878202] ? lock_acquire+0x1d5/0x580 [ 25.882148] ? lock_acquire+0x1d5/0x580 [ 25.886100] ? pndisc_destructor+0x340/0x340 [ 25.890487] ? lock_release+0xa40/0xa40 [ 25.894434] ip6table_raw_hook+0x65/0x80 [ 25.898469] nf_hook_slow+0xba/0x1a0 [ 25.902162] nf_hook.constprop.27+0x3f6/0x830 [ 25.906632] ? pndisc_destructor+0x340/0x340 [ 25.911017] ? find_held_lock+0x35/0x1d0 [ 25.915051] ? lock_acquire+0x1d5/0x580 [ 25.918998] ? lock_acquire+0x1d5/0x580 [ 25.922943] ? ndisc_send_skb+0x826/0x1370 [ 25.927149] ? lock_downgrade+0x980/0x980 [ 25.931268] ? lock_release+0xa40/0xa40 [ 25.935219] ? ndisc_error_report+0x180/0x180 [ 25.939692] ndisc_send_skb+0xa51/0x1370 [ 25.943727] ? nf_hook.constprop.27+0x830/0x830 [ 25.948369] ? check_noncircular+0x20/0x20 [ 25.952577] ? refcount_add_not_zero+0x133/0x200 [ 25.957306] ? refcount_dec_if_one+0x20/0x20 [ 25.961691] ? print_irqtrace_events+0x270/0x270 [ 25.966425] ndisc_send_ns+0x38a/0x870 [ 25.970295] ? ndisc_netdev_event+0x4a0/0x4a0 [ 25.974778] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.979771] ? addrconf_dad_work+0xa5e/0x1320 [ 25.984245] addrconf_dad_work+0xb9e/0x1320 [ 25.988543] ? addrconf_dad_work+0xb9e/0x1320 [ 25.993017] ? addrconf_ifdown+0x14f0/0x14f0 [ 25.997401] ? __lock_is_held+0xb6/0x140 [ 26.001439] process_one_work+0xbbf/0x1af0 [ 26.005648] ? process_one_work+0xbbf/0x1af0 [ 26.010033] ? pwq_dec_nr_in_flight+0x450/0x450 [ 26.014684] ? __schedule+0x8ea/0x2040 [ 26.018547] ? __lock_acquire+0x664/0x3e00 [ 26.022757] ? retint_kernel+0x10/0x10 [ 26.026617] ? check_noncircular+0x20/0x20 [ 26.030827] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 26.035563] ? lock_acquire+0x1d5/0x580 [ 26.039508] ? lock_acquire+0x1d5/0x580 [ 26.043453] ? worker_thread+0x4a3/0x1990 [ 26.047571] ? lock_downgrade+0x980/0x980 [ 26.051696] ? lock_release+0xa40/0xa40 [ 26.055641] ? retint_kernel+0x10/0x10 [ 26.059502] ? do_raw_spin_trylock+0x190/0x190 [ 26.064061] worker_thread+0x223/0x1990 [ 26.068011] ? finish_task_switch+0x1e2/0x890 [ 26.072485] ? process_one_work+0x1af0/0x1af0 [ 26.076955] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.081944] ? trace_hardirqs_on+0xd/0x10 [ 26.086066] ? mmdrop+0x18/0x30 [ 26.089321] ? finish_task_switch+0x29b/0x890 [ 26.093789] ? copy_overflow+0x20/0x20 [ 26.097659] ? __schedule+0x8ea/0x2040 [ 26.101523] ? check_noncircular+0x20/0x20 [ 26.105731] ? find_held_lock+0x35/0x1d0 [ 26.109768] ? find_held_lock+0x35/0x1d0 [ 26.113802] ? find_held_lock+0x35/0x1d0 [ 26.117835] ? complete+0x62/0x80 [ 26.121262] ? __schedule+0x2040/0x2040 [ 26.125209] ? do_wait_intr_irq+0x3e0/0x3e0 [ 26.129504] ? __lockdep_init_map+0xe4/0x650 [ 26.133887] ? do_raw_spin_trylock+0x190/0x190 [ 26.138440] ? lockdep_init_map+0x9/0x10 [ 26.142475] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 26.147551] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.152539] ? trace_hardirqs_on+0xd/0x10 [ 26.156661] ? __kthread_parkme+0x175/0x240 [ 26.160959] kthread+0x33c/0x400 [ 26.164299] ? process_one_work+0x1af0/0x1af0 [ 26.168767] ? kthread_stop+0x7a0/0x7a0 [ 26.172713] ret_from_fork+0x3a/0x50 2018/02/20 10:05:57 executed programs: 477 2018/02/20 10:06:02 executed programs: 1116