[?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. [ 17.477111] audit: type=1400 audit(1519091502.119:6): avc: denied { map } for pid=4093 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 '10.128.15.204' (ECDSA) to the list of known hosts. syzkaller login: [ 23.760666] audit: type=1400 audit(1519091508.403:7): avc: denied { map } for pid=4107 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 01:51:48 parsed 1 programs 2018/02/20 01:51:48 executed programs: 0 [ 24.023624] audit: type=1400 audit(1519091508.665:8): avc: denied { map } for pid=4107 comm="syz-execprog" path="/root/syzkaller-shm384983466" 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 [ 24.035581] IPVS: ftp: loaded support on port[0] = 21 [ 24.252605] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 24.833468] [ 24.835120] ===================================== [ 24.839930] WARNING: bad unlock balance detected! [ 24.844741] 4.16.0-rc1+ #232 Not tainted [ 24.848769] ------------------------------------- [ 24.853581] kworker/0:2/1828 is trying to release lock (rcu_read_lock_bh) at: [ 24.860834] [] hashlimit_mt_common.isra.10+0x1beb/0x2610 [ 24.867813] but there are no more locks to release! [ 24.872795] [ 24.872795] other info that might help us debug this: [ 24.879427] 5 locks held by kworker/0:2/1828: [ 24.883886] #0: ((wq_completion)"%s"("ipv6_addrconf")){+.+.}, at: [<00000000ad1b0c71>] process_one_work+0xaaf/0x1af0 [ 24.894698] #1: ((work_completion)(&(&ifa->dad_work)->work)){+.+.}, at: [<000000008b03ca39>] process_one_work+0xb01/0x1af0 [ 24.906027] #2: (rtnl_mutex){+.+.}, at: [<000000008145c4b3>] rtnl_lock+0x17/0x20 [ 24.913709] #3: (rcu_read_lock){....}, at: [<00000000a2591516>] ndisc_send_skb+0x826/0x1370 [ 24.922345] #4: (rcu_read_lock){....}, at: [<0000000032cdd3a5>] nf_hook.constprop.27+0x0/0x830 [ 24.931241] [ 24.931241] stack backtrace: [ 24.935710] CPU: 0 PID: 1828 Comm: kworker/0:2 Not tainted 4.16.0-rc1+ #232 [ 24.942777] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.952107] Workqueue: ipv6_addrconf addrconf_dad_work [ 24.957349] Call Trace: [ 24.959911] dump_stack+0x194/0x257 [ 24.963512] ? arch_local_irq_restore+0x53/0x53 [ 24.968158] ? hashlimit_mt_common.isra.10+0x1beb/0x2610 [ 24.973580] print_unlock_imbalance_bug+0x12f/0x140 [ 24.978569] lock_release+0x6fe/0xa40 [ 24.982340] ? hashlimit_mt_common.isra.10+0x1beb/0x2610 [ 24.987758] ? lock_downgrade+0x980/0x980 [ 24.991875] ? lock_release+0xa40/0xa40 [ 24.995824] ? __raw_spin_lock_init+0x1c/0x100 [ 25.000375] ? do_raw_spin_trylock+0x190/0x190 [ 25.004929] hashlimit_mt_common.isra.10+0x1c08/0x2610 [ 25.010176] ? dsthash_find+0x5b0/0x5b0 [ 25.014120] ? __lock_acquire+0x664/0x3e00 [ 25.018325] ? ret_from_fork+0x3a/0x50 [ 25.022188] ? print_irqtrace_events+0x270/0x270 [ 25.026918] ? __unwind_start+0x169/0x330 [ 25.031040] hashlimit_mt+0x78/0x90 [ 25.034897] ? hashlimit_mt+0x78/0x90 [ 25.038668] ip6t_do_table+0x98d/0x1a30 [ 25.042615] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.047780] ? ip6t_error+0x60/0x60 [ 25.051380] ? check_noncircular+0x20/0x20 [ 25.055583] ? lock_acquire+0x1d5/0x580 [ 25.059526] ? lock_acquire+0x1d5/0x580 [ 25.063471] ? pndisc_destructor+0x340/0x340 [ 25.067853] ? lock_release+0xa40/0xa40 [ 25.071797] ip6table_raw_hook+0x65/0x80 [ 25.075829] nf_hook_slow+0xba/0x1a0 [ 25.079512] nf_hook.constprop.27+0x3f6/0x830 [ 25.083980] ? pndisc_destructor+0x340/0x340 [ 25.088359] ? find_held_lock+0x35/0x1d0 [ 25.092391] ? lock_acquire+0x1d5/0x580 [ 25.096333] ? lock_acquire+0x1d5/0x580 [ 25.100278] ? ndisc_send_skb+0x826/0x1370 [ 25.104483] ? lock_downgrade+0x980/0x980 [ 25.108601] ? lock_release+0xa40/0xa40 [ 25.112545] ? ndisc_error_report+0x180/0x180 [ 25.117016] ndisc_send_skb+0xa51/0x1370 [ 25.121049] ? nf_hook.constprop.27+0x830/0x830 [ 25.125685] ? check_noncircular+0x20/0x20 [ 25.129894] ? refcount_add_not_zero+0x133/0x200 [ 25.134618] ? refcount_dec_if_one+0x20/0x20 [ 25.138999] ? print_irqtrace_events+0x270/0x270 [ 25.143731] ndisc_send_ns+0x38a/0x870 [ 25.147590] ? ndisc_netdev_event+0x4a0/0x4a0 [ 25.152054] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.157039] ? addrconf_dad_work+0xa5e/0x1320 [ 25.161506] addrconf_dad_work+0xb9e/0x1320 [ 25.165795] ? addrconf_dad_work+0xb9e/0x1320 [ 25.170259] ? addrconf_ifdown+0x14f0/0x14f0 [ 25.174642] ? __lock_is_held+0xb6/0x140 [ 25.178677] process_one_work+0xbbf/0x1af0 [ 25.182881] ? process_one_work+0xbbf/0x1af0 [ 25.187261] ? pwq_dec_nr_in_flight+0x450/0x450 [ 25.191901] ? __schedule+0x8ea/0x2040 [ 25.195759] ? __lock_acquire+0x664/0x3e00 [ 25.199964] ? __lock_is_held+0xb6/0x140 [ 25.203997] ? check_noncircular+0x20/0x20 [ 25.208205] ? check_noncircular+0x20/0x20 [ 25.212412] ? lock_acquire+0x1d5/0x580 [ 25.216357] ? lock_acquire+0x1d5/0x580 [ 25.220305] ? worker_thread+0x4a3/0x1990 [ 25.224427] ? lock_downgrade+0x980/0x980 [ 25.228545] ? lock_release+0xa40/0xa40 [ 25.232494] ? do_raw_spin_trylock+0x190/0x190 [ 25.237060] worker_thread+0x223/0x1990 [ 25.241009] ? finish_task_switch+0x1e2/0x890 [ 25.245480] ? process_one_work+0x1af0/0x1af0 [ 25.249947] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.254932] ? trace_hardirqs_on+0xd/0x10 [ 25.259048] ? mmdrop+0x18/0x30 [ 25.262297] ? finish_task_switch+0x29b/0x890 [ 25.266762] ? copy_overflow+0x20/0x20 [ 25.270624] ? __schedule+0x8ea/0x2040 [ 25.274483] ? check_noncircular+0x20/0x20 [ 25.278685] ? find_held_lock+0x35/0x1d0 [ 25.282716] ? find_held_lock+0x35/0x1d0 [ 25.286751] ? find_held_lock+0x35/0x1d0 [ 25.290782] ? complete+0x62/0x80 [ 25.294206] ? __schedule+0x2040/0x2040 [ 25.298153] ? do_wait_intr_irq+0x3e0/0x3e0 [ 25.302444] ? __lockdep_init_map+0xe4/0x650 [ 25.306821] ? do_raw_spin_trylock+0x190/0x190 [ 25.311372] ? lockdep_init_map+0x9/0x10 [ 25.315403] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 25.320477] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 25.325463] ? trace_hardirqs_on+0xd/0x10 [ 25.329587] ? __kthread_parkme+0x175/0x240 [ 25.333878] kthread+0x33c/0x400 [ 25.337215] ? process_one_work+0x1af0/0x1af0 [ 25.341677] ? kthread_stop+0x7a0/0x7a0 [ 25.345623] ret_from_fork+0x3a/0x50 2018/02/20 01:51:53 executed programs: 609 2018/02/20 01:51:58 executed programs: 1415