[?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. [ 18.390701] audit: type=1400 audit(1519093861.260:6): avc: denied { map } for pid=4152 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 '10.128.0.4' (ECDSA) to the list of known hosts. syzkaller login: [ 24.718833] audit: type=1400 audit(1519093867.588:7): avc: denied { map } for pid=4166 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 02:31:07 parsed 1 programs 2018/02/20 02:31:07 executed programs: 0 [ 24.987471] audit: type=1400 audit(1519093867.855:8): avc: denied { map } for pid=4166 comm="syz-execprog" path="/root/syzkaller-shm006322951" 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 [ 24.999890] IPVS: ftp: loaded support on port[0] = 21 [ 25.199953] ip (4211) used greatest stack depth: 16544 bytes left [ 25.233977] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 25.705377] [ 25.707024] ===================================== [ 25.711845] WARNING: bad unlock balance detected! [ 25.716664] 4.16.0-rc1+ #232 Not tainted [ 25.720693] ------------------------------------- [ 25.725504] kworker/0:1/24 is trying to release lock (rcu_read_lock_bh) at: [ 25.732585] [] hashlimit_mt_common.isra.10+0x1beb/0x2610 [ 25.739564] but there are no more locks to release! [ 25.744549] [ 25.744549] other info that might help us debug this: [ 25.751215] 5 locks held by kworker/0:1/24: [ 25.755505] #0: ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<00000000e07adc9e>] process_one_work+0xaaf/0x1af0 [ 25.766318] #1: ((work_completion)(&(&ifa->dad_work)->work)){+.+.}, at: [<000000006d369344>] process_one_work+0xb01/0x1af0 [ 25.777653] #2: (rtnl_mutex){+.+.}, at: [<00000000de6adc60>] rtnl_lock+0x17/0x20 [ 25.785339] #3: (rcu_read_lock){....}, at: [<00000000f7f52772>] ndisc_send_skb+0x826/0x1370 [ 25.793982] #4: (rcu_read_lock){....}, at: [<000000001daa1413>] nf_hook.constprop.27+0x0/0x830 [ 25.802884] [ 25.802884] stack backtrace: [ 25.807353] CPU: 0 PID: 24 Comm: kworker/0:1 Not tainted 4.16.0-rc1+ #232 [ 25.814247] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.823580] Workqueue: ipv6_addrconf addrconf_dad_work [ 25.828842] Call Trace: [ 25.831402] dump_stack+0x194/0x257 [ 25.835005] ? arch_local_irq_restore+0x53/0x53 [ 25.839653] ? hashlimit_mt_common.isra.10+0x1beb/0x2610 [ 25.845097] print_unlock_imbalance_bug+0x12f/0x140 [ 25.850087] lock_release+0x6fe/0xa40 [ 25.853866] ? hashlimit_mt_common.isra.10+0x1beb/0x2610 [ 25.859288] ? lock_downgrade+0x980/0x980 [ 25.863409] ? lock_release+0xa40/0xa40 [ 25.867353] ? __raw_spin_lock_init+0x1c/0x100 [ 25.871909] ? do_raw_spin_trylock+0x190/0x190 [ 25.876465] hashlimit_mt_common.isra.10+0x1c08/0x2610 [ 25.881731] ? dsthash_find+0x5b0/0x5b0 [ 25.885676] ? __lock_acquire+0x664/0x3e00 [ 25.889883] ? ret_from_fork+0x3a/0x50 [ 25.893749] ? print_irqtrace_events+0x270/0x270 [ 25.898480] ? __unwind_start+0x169/0x330 [ 25.902604] hashlimit_mt+0x78/0x90 [ 25.906202] ? hashlimit_mt+0x78/0x90 [ 25.909976] ip6t_do_table+0x98d/0x1a30 [ 25.913927] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.919095] ? ip6t_error+0x60/0x60 [ 25.922694] ? check_noncircular+0x20/0x20 [ 25.926901] ? lock_acquire+0x1d5/0x580 [ 25.930848] ? lock_acquire+0x1d5/0x580 [ 25.934793] ? pndisc_destructor+0x340/0x340 [ 25.939175] ? lock_release+0xa40/0xa40 [ 25.943122] ip6table_raw_hook+0x65/0x80 [ 25.947157] nf_hook_slow+0xba/0x1a0 [ 25.950843] nf_hook.constprop.27+0x3f6/0x830 [ 25.955310] ? pndisc_destructor+0x340/0x340 [ 25.959692] ? find_held_lock+0x35/0x1d0 [ 25.963729] ? lock_acquire+0x1d5/0x580 [ 25.967673] ? lock_acquire+0x1d5/0x580 [ 25.971619] ? ndisc_send_skb+0x826/0x1370 [ 25.975830] ? lock_downgrade+0x980/0x980 [ 25.979949] ? lock_release+0xa40/0xa40 [ 25.983897] ? ndisc_error_report+0x180/0x180 [ 25.988365] ndisc_send_skb+0xa51/0x1370 [ 25.992402] ? nf_hook.constprop.27+0x830/0x830 [ 25.997041] ? check_noncircular+0x20/0x20 [ 26.001248] ? refcount_add_not_zero+0x133/0x200 [ 26.005974] ? refcount_dec_if_one+0x20/0x20 [ 26.010357] ? print_irqtrace_events+0x270/0x270 [ 26.015089] ndisc_send_ns+0x38a/0x870 [ 26.018950] ? ndisc_netdev_event+0x4a0/0x4a0 [ 26.023421] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.028408] ? addrconf_dad_work+0xa5e/0x1320 [ 26.032906] addrconf_dad_work+0xb9e/0x1320 [ 26.037198] ? addrconf_dad_work+0xb9e/0x1320 [ 26.041668] ? addrconf_ifdown+0x14f0/0x14f0 [ 26.046049] ? __lock_is_held+0xb6/0x140 [ 26.050088] process_one_work+0xbbf/0x1af0 [ 26.054294] ? process_one_work+0xbbf/0x1af0 [ 26.058676] ? pwq_dec_nr_in_flight+0x450/0x450 [ 26.063318] ? __schedule+0x8ea/0x2040 [ 26.067179] ? __lock_acquire+0x664/0x3e00 [ 26.071388] ? check_noncircular+0x20/0x20 [ 26.075600] ? check_noncircular+0x20/0x20 [ 26.079810] ? lock_acquire+0x1d5/0x580 [ 26.083755] ? lock_acquire+0x1d5/0x580 [ 26.087701] ? worker_thread+0x4a3/0x1990 [ 26.091823] ? lock_downgrade+0x980/0x980 [ 26.095943] ? lock_release+0xa40/0xa40 [ 26.099892] ? retint_kernel+0x10/0x10 [ 26.103751] ? do_raw_spin_trylock+0x190/0x190 [ 26.108306] worker_thread+0x223/0x1990 [ 26.112250] ? finish_task_switch+0x1e2/0x890 [ 26.116723] ? process_one_work+0x1af0/0x1af0 [ 26.121190] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.126177] ? trace_hardirqs_on+0xd/0x10 [ 26.130296] ? mmdrop+0x18/0x30 [ 26.133550] ? finish_task_switch+0x29b/0x890 [ 26.138019] ? copy_overflow+0x20/0x20 [ 26.141881] ? __schedule+0x8ea/0x2040 [ 26.145746] ? check_noncircular+0x20/0x20 [ 26.149952] ? find_held_lock+0x35/0x1d0 [ 26.153988] ? find_held_lock+0x35/0x1d0 [ 26.158025] ? find_held_lock+0x35/0x1d0 [ 26.162060] ? complete+0x62/0x80 [ 26.165487] ? __schedule+0x2040/0x2040 [ 26.169435] ? do_wait_intr_irq+0x3e0/0x3e0 [ 26.173765] ? __lockdep_init_map+0xe4/0x650 [ 26.178144] ? do_raw_spin_trylock+0x190/0x190 [ 26.182698] ? lockdep_init_map+0x9/0x10 [ 26.186733] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 26.191810] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.196800] ? trace_hardirqs_on+0xd/0x10 [ 26.200920] ? __kthread_parkme+0x175/0x240 [ 26.205213] kthread+0x33c/0x400 [ 26.208556] ? process_one_work+0x1af0/0x1af0 [ 26.213023] ? kthread_stop+0x7a0/0x7a0 [ 26.216969] ret_from_fork+0x3a/0x50 2018/02/20 02:31:12 executed programs: 592 2018/02/20 02:31:17 executed programs: 1368