INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes [ 1001.954653] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.1.3' (ECDSA) to the list of known hosts. [ 1007.446159] random: sshd: uninitialized urandom read (32 bytes read) [ 1007.543537] audit: type=1400 audit(1567384120.944:8): avc: denied { map } for pid=1948 comm="syz-executor956" path="/root/syz-executor956853512" dev="sda1" ino=2339 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 1019.540620] ================================================================== [ 1019.548146] BUG: KASAN: use-after-free in xfrm6_tunnel_destroy+0x4e0/0x560 [ 1019.555243] Read of size 8 at addr ffff8881c54700b8 by task kworker/1:0/2528 [ 1019.562404] [ 1019.564027] CPU: 1 PID: 2528 Comm: kworker/1:0 Not tainted 4.14.141+ #40 [ 1019.570859] Workqueue: events xfrm_state_gc_task [ 1019.575592] Call Trace: [ 1019.578164] dump_stack+0xca/0x134 [ 1019.581682] ? xfrm6_tunnel_destroy+0x4e0/0x560 [ 1019.586326] ? xfrm6_tunnel_destroy+0x4e0/0x560 [ 1019.590974] print_address_description+0x60/0x226 [ 1019.595795] ? xfrm6_tunnel_destroy+0x4e0/0x560 [ 1019.600459] ? xfrm6_tunnel_destroy+0x4e0/0x560 [ 1019.605115] __kasan_report.cold+0x1a/0x41 [ 1019.609336] ? xfrm6_tunnel_destroy+0x4e0/0x560 [ 1019.613982] xfrm6_tunnel_destroy+0x4e0/0x560 [ 1019.618453] ? kfree+0x1ca/0x3a0 [ 1019.621799] xfrm_state_gc_task+0x3d6/0x550 [ 1019.626115] ? xfrm_state_unregister_afinfo+0x190/0x190 [ 1019.631462] ? lock_acquire+0x12b/0x360 [ 1019.635430] process_one_work+0x7f1/0x1580 [ 1019.639650] ? pwq_dec_nr_in_flight+0x2c0/0x2c0 [ 1019.644304] worker_thread+0x768/0xdf0 [ 1019.648178] ? process_one_work+0x1580/0x1580 [ 1019.652666] kthread+0x31f/0x430 [ 1019.656012] ? kthread_create_on_node+0xf0/0xf0 [ 1019.660664] ret_from_fork+0x3a/0x50 [ 1019.664363] [ 1019.665988] Allocated by task 1955: [ 1019.669595] __kasan_kmalloc.part.0+0x53/0xc0 [ 1019.674071] ops_init+0xee/0x3f0 [ 1019.677534] setup_net+0x259/0x550 [ 1019.681072] copy_net_ns+0x195/0x480 [ 1019.684763] create_new_namespaces+0x373/0x760 [ 1019.689318] unshare_nsproxy_namespaces+0xa5/0x1e0 [ 1019.694224] SyS_unshare+0x34e/0x6c0 [ 1019.697915] do_syscall_64+0x19b/0x520 [ 1019.701786] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1019.706960] 0xffffffffffffffff [ 1019.710211] [ 1019.711840] Freed by task 1967: [ 1019.715103] __kasan_slab_free+0x164/0x210 [ 1019.719341] kfree+0x108/0x3a0 [ 1019.722540] ops_free_list.part.0+0x1f9/0x330 [ 1019.727009] cleanup_net+0x466/0x870 [ 1019.730705] process_one_work+0x7f1/0x1580 [ 1019.734917] worker_thread+0xdd/0xdf0 [ 1019.738707] kthread+0x31f/0x430 [ 1019.742052] ret_from_fork+0x3a/0x50 [ 1019.745831] 0xffffffffffffffff [ 1019.749096] [ 1019.750708] The buggy address belongs to the object at ffff8881c5470000 [ 1019.750708] which belongs to the cache kmalloc-8192 of size 8192 [ 1019.763526] The buggy address is located 184 bytes inside of [ 1019.763526] 8192-byte region [ffff8881c5470000, ffff8881c5472000) [ 1019.775463] The buggy address belongs to the page: [ 1019.780385] page:ffffea0007151c00 count:1 mapcount:0 mapping: (null) index:0x0 compound_mapcount: 0 [ 1019.790420] flags: 0x4000000000010200(slab|head) [ 1019.795155] raw: 4000000000010200 0000000000000000 0000000000000000 0000000100030003 [ 1019.803017] raw: dead000000000100 dead000000000200 ffff8881da802400 0000000000000000 [ 1019.810874] page dumped because: kasan: bad access detected [ 1019.816563] [ 1019.818186] Memory state around the buggy address: [ 1019.823095] ffff8881c546ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 1019.830455] ffff8881c5470000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1019.837809] >ffff8881c5470080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1019.845147] ^ [ 1019.850313] ffff8881c5470100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1019.857657] ffff8881c5470180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 1019.864992] ================================================================== [ 1019.872328] Disabling lock debugging due to kernel taint [ 1019.877809] Kernel panic - not syncing: panic_on_warn set ... [ 1019.877809] executing program [ 1019.885156] CPU: 1 PID: 2528 Comm: kworker/1:0 Tainted: G B 4.14.141+ #40 [ 1019.893206] Workqueue: events xfrm_state_gc_task [ 1019.897953] Call Trace: [ 1019.900535] dump_stack+0xca/0x134 [ 1019.904071] panic+0x1ea/0x3d3 [ 1019.907256] ? add_taint.cold+0x16/0x16 [ 1019.911232] ? xfrm6_tunnel_destroy+0x4e0/0x560 [ 1019.915896] end_report+0x43/0x49 [ 1019.919341] ? xfrm6_tunnel_destroy+0x4e0/0x560 [ 1019.924022] __kasan_report.cold+0xd/0x41 [ 1019.928148] ? xfrm6_tunnel_destroy+0x4e0/0x560 [ 1019.932793] xfrm6_tunnel_destroy+0x4e0/0x560 [ 1019.937265] ? kfree+0x1ca/0x3a0 [ 1019.940630] xfrm_state_gc_task+0x3d6/0x550 [ 1019.944930] ? xfrm_state_unregister_afinfo+0x190/0x190 [ 1019.950269] ? lock_acquire+0x12b/0x360 [ 1019.954222] process_one_work+0x7f1/0x1580 [ 1019.958442] ? pwq_dec_nr_in_flight+0x2c0/0x2c0 [ 1019.963107] worker_thread+0x768/0xdf0 [ 1019.966975] ? process_one_work+0x1580/0x1580 [ 1019.971446] kthread+0x31f/0x430 [ 1019.974788] ? kthread_create_on_node+0xf0/0xf0 [ 1019.979431] ret_from_fork+0x3a/0x50 [ 1019.983726] Kernel Offset: 0x39000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 1019.994630] Rebooting in 86400 seconds..