sctp: [Deprecated]: syz-executor0 (pid 15115) Use of int in max_burst socket option deprecated. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor0 (pid 15129) Use of int in max_burst socket option deprecated. Use struct sctp_assoc_value instead kworker/dying (5901) used greatest stack depth: 7888 bytes left INFO: task syz-executor6:15083 blocked for more than 120 seconds. Not tainted 4.16.0-rc7+ #368 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor6 D25640 15083 14865 0x00000004 Call Trace: context_switch kernel/sched/core.c:2862 [inline] __schedule+0x8fb/0x1ec0 kernel/sched/core.c:3440 schedule+0xf5/0x430 kernel/sched/core.c:3499 cgroup_lock_and_drain_offline+0x217/0x670 kernel/cgroup/cgroup.c:2808 cgroup_kn_lock_live+0x320/0x580 kernel/cgroup/cgroup.c:1533 cgroup_subtree_control_write+0x316/0xb00 kernel/cgroup/cgroup.c:3108 cgroup_file_write+0x2ae/0x710 kernel/cgroup/cgroup.c:3429 kernfs_fop_write+0x2bc/0x440 fs/kernfs/file.c:316 __vfs_write+0xef/0x970 fs/read_write.c:480 vfs_write+0x189/0x510 fs/read_write.c:544 SYSC_write fs/read_write.c:589 [inline] SyS_write+0xef/0x220 fs/read_write.c:581 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x454879 RSP: 002b:00007fd1b96eac68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fd1b96eb6d4 RCX: 0000000000454879 RDX: 0000000000000006 RSI: 0000000020000100 RDI: 0000000000000014 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000006a3 R14: 00000000006fbfe8 R15: 0000000000000000 Showing all locks held in the system: 2 locks held by khungtaskd/866: #0: (rcu_read_lock){....}, at: [<0000000097ed56d5>] check_hung_uninterruptible_tasks kernel/hung_task.c:175 [inline] #0: (rcu_read_lock){....}, at: [<0000000097ed56d5>] watchdog+0x1c5/0xd60 kernel/hung_task.c:249 #1: (tasklist_lock){.+.+}, at: [<0000000097d2101c>] debug_show_all_locks+0xd3/0x3d0 kernel/locking/lockdep.c:4470 2 locks held by rsyslogd/4307: #0: (&f->f_pos_lock){+.+.}, at: [<00000000e988dc7b>] __fdget_pos+0x12b/0x190 fs/file.c:765 #1: (&rq->lock){-.-.}, at: [<0000000002f1f2fe>] rq_lock kernel/sched/sched.h:1760 [inline] #1: (&rq->lock){-.-.}, at: [<0000000002f1f2fe>] __schedule+0x24e/0x1ec0 kernel/sched/core.c:3378 2 locks held by getty/4398: #0: (&tty->ldisc_sem){++++}, at: [<000000008016d713>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000ed7f6516>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 2 locks held by getty/4399: #0: (&tty->ldisc_sem){++++}, at: [<000000008016d713>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000ed7f6516>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 2 locks held by getty/4400: #0: (&tty->ldisc_sem){++++}, at: [<000000008016d713>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000ed7f6516>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 2 locks held by getty/4401: #0: (&tty->ldisc_sem){++++}, at: [<000000008016d713>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000ed7f6516>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 2 locks held by getty/4402: #0: (&tty->ldisc_sem){++++}, at: [<000000008016d713>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000ed7f6516>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 2 locks held by getty/4403: #0: (&tty->ldisc_sem){++++}, at: [<000000008016d713>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000ed7f6516>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 3 locks held by kworker/1:6/7378: #0: ((wq_completion)"events"){+.+.}, at: [<000000009f3a60ef>] work_static include/linux/workqueue.h:198 [inline] #0: ((wq_completion)"events"){+.+.}, at: [<000000009f3a60ef>] set_work_data kernel/workqueue.c:619 [inline] #0: ((wq_completion)"events"){+.+.}, at: [<000000009f3a60ef>] set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline] #0: ((wq_completion)"events"){+.+.}, at: [<000000009f3a60ef>] process_one_work+0xb12/0x1bb0 kernel/workqueue.c:2084 #1: (slab_caches_to_rcu_destroy_work){+.+.}, at: [<0000000009087906>] process_one_work+0xb89/0x1bb0 kernel/workqueue.c:2088 #2: (rcu_sched_state.barrier_mutex){+.+.}, at: [<000000001329d541>] _rcu_barrier+0x142/0x750 kernel/rcu/tree.c:3517 2 locks held by getty/14663: #0: (&tty->ldisc_sem){++++}, at: [<000000008016d713>] ldsem_down_read+0x37/0x40 drivers/tty/tty_ldsem.c:365 #1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000ed7f6516>] n_tty_read+0x2ef/0x1a40 drivers/tty/n_tty.c:2131 3 locks held by syz-executor6/15083: #0: (&f->f_pos_lock){+.+.}, at: [<00000000e988dc7b>] __fdget_pos+0x12b/0x190 fs/file.c:765 #1: (sb_writers#10){.+.+}, at: [<000000001bad4b3c>] file_start_write include/linux/fs.h:2709 [inline] #1: (sb_writers#10){.+.+}, at: [<000000001bad4b3c>] vfs_write+0x407/0x510 fs/read_write.c:543 #2: (&of->mutex){+.+.}, at: [<00000000153bb9cf>] kernfs_fop_write+0x208/0x440 fs/kernfs/file.c:307 1 lock held by syz-executor6/15095: #0: (&f->f_pos_lock){+.+.}, at: [<00000000e988dc7b>] __fdget_pos+0x12b/0x190 fs/file.c:765 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 866 Comm: khungtaskd Not tainted 4.16.0-rc7+ #368 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x194/0x24d lib/dump_stack.c:53 nmi_cpu_backtrace+0x1d2/0x210 lib/nmi_backtrace.c:103 nmi_trigger_cpumask_backtrace+0x123/0x180 lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:138 [inline] check_hung_task kernel/hung_task.c:132 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:190 [inline] watchdog+0x90c/0xd60 kernel/hung_task.c:249 kthread+0x33c/0x400 kernel/kthread.c:238 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:406 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 14664 Comm: kworker/1:9 Not tainted 4.16.0-rc7+ #368 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: cgroup_destroy css_free_work_fn RIP: 0010:qlist_move_cache+0x73/0xf0 mm/kasan/quarantine.c:275 RSP: 0018:ffff8801a2f770c8 EFLAGS: 00000082 RAX: ffff8801b6b7a840 RBX: 000077ff80000000 RCX: ffff8801b6b7a840 RDX: ffff8801b929cb40 RSI: ffff8801a2f770e8 RDI: ffffffff892d6ff0 RBP: ffff8801a2f770d8 R08: ffff8801b8b3f580 R09: 0000000080000000 R10: ffff8801d9416000 R11: ffffea0000000000 R12: ffffea0006b3eadf R13: ffffffff87bd6fa0 R14: ffffffff892d94e0 R15: ffff8801b929cb40 FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 0000000007a22001 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 000000000000d001 DR2: 000000000000f000 DR3: 0000000000004000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: quarantine_remove_cache+0x79/0xf0 mm/kasan/quarantine.c:317 kasan_cache_shutdown+0x9/0x10 mm/kasan/kasan.c:381 shutdown_cache+0x15/0x1b0 mm/slab_common.c:577 memcg_destroy_kmem_caches+0x62/0x80 mm/slab_common.c:781 memcg_free_kmem mm/memcontrol.c:2856 [inline] mem_cgroup_css_free+0x2a4/0x3f0 mm/memcontrol.c:4298 css_free_work_fn+0x1c8/0x1420 kernel/cgroup/cgroup.c:4541 process_one_work+0xc47/0x1bb0 kernel/workqueue.c:2113 worker_thread+0x223/0x1990 kernel/workqueue.c:2247 kthread+0x33c/0x400 kernel/kthread.c:238 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:406 Code: 3f 00 8b 40 14 74 7f 4c 8b 47 08 49 89 08 48 89 4f 08 48 c7 01 00 00 00 00 4c 89 d1 48 01 47 10 4d 85 d2 74 5c 48 89 c8 4c 8b 11 <4c> 01 c8 72 62 49 89 d8 4c 01 c0 48 c1 e8 0c 48 c1 e0 06 4c 01