Free swap = 0kB Total swap = 0kB 1965979 pages RAM 0 pages HighMem/MovableOnly 313625 pages reserved INFO: task init:22715 blocked for more than 140 seconds. Not tainted 4.9.189+ #2 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. init D29304 22715 1 0x00000000 0000000000000087 ffff8801cd962f80 0000000000000000 ffff8801db621000 ffffffff83031180 ffff8801db621018 ffff8801d3d9f758 ffffffff82818d1e ffff8801cd963848 ffff8801cd963820 00ff8801cd963850 ffff8801db6218f0 Call Trace: [<00000000ab04f36e>] schedule+0x92/0x1c0 kernel/sched/core.c:3546 [<00000000bff823c5>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3579 [<00000000efddcc68>] __mutex_lock_common kernel/locking/mutex.c:582 [inline] [<00000000efddcc68>] mutex_lock_nested+0x38d/0x920 kernel/locking/mutex.c:621 [<000000006ec5643d>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] [<000000006ec5643d>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 [<000000001a3a01dc>] chrdev_open+0x230/0x630 fs/char_dev.c:398 [<00000000ca758531>] do_dentry_open+0x422/0xd20 fs/open.c:791 [<000000006184063e>] vfs_open+0x105/0x230 fs/open.c:904 [<00000000b8624cf4>] do_last fs/namei.c:3457 [inline] [<00000000b8624cf4>] path_openat+0xbf5/0x2f60 fs/namei.c:3581 [<0000000079cc9993>] do_filp_open+0x1a1/0x280 fs/namei.c:3615 [<00000000e5bc00ab>] do_sys_open+0x2f0/0x610 fs/open.c:1097 [<00000000156c3788>] SYSC_open fs/open.c:1115 [inline] [<00000000156c3788>] SyS_open+0x2d/0x40 fs/open.c:1110 [<00000000065a8d73>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<0000000010ad5730>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Showing all locks held in the system: 2 locks held by khungtaskd/24: #0: (rcu_read_lock){......}, at: [<00000000a5654db9>] check_hung_uninterruptible_tasks kernel/hung_task.c:169 [inline] #0: (rcu_read_lock){......}, at: [<00000000a5654db9>] watchdog+0x14b/0xaf0 kernel/hung_task.c:263 #1: (tasklist_lock){.+.+..}, at: [<000000006312d056>] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4336 1 lock held by rsyslogd/1902: #0: (&f->f_pos_lock){+.+.+.}, at: [<00000000c90758ed>] __fdget_pos+0xa8/0xd0 fs/file.c:782 2 locks held by getty/2029: #0: (&tty->ldisc_sem){++++++}, at: [<00000000f6b74649>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+...}, at: [<000000009ec07135>] n_tty_read+0x1fe/0x1820 drivers/tty/n_tty.c:2156 1 lock held by init/22715: #0: (tty_mutex){+.+.+.}, at: [<000000006ec5643d>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<000000006ec5643d>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/880: #0: (tty_mutex){+.+.+.}, at: [<000000006ec5643d>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<000000006ec5643d>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/896: #0: (tty_mutex){+.+.+.}, at: [<000000006ec5643d>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<000000006ec5643d>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/926: #0: (tty_mutex){+.+.+.}, at: [<000000006ec5643d>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<000000006ec5643d>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 1 lock held by init/1024: #0: (tty_mutex){+.+.+.}, at: [<000000006ec5643d>] tty_open_by_driver drivers/tty/tty_io.c:2062 [inline] #0: (tty_mutex){+.+.+.}, at: [<000000006ec5643d>] tty_open+0x3f9/0xe10 drivers/tty/tty_io.c:2140 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.189+ #2 ffff8801d98d7cc8 ffffffff81b65c01 0000000000000001 0000000000000000 0000000000000001 ffffffff81099a01 dffffc0000000000 ffff8801d98d7d00 ffffffff81b70e9c 0000000000000001 0000000000000000 0000000000000001 Call Trace: [<000000008a164023>] __dump_stack lib/dump_stack.c:15 [inline] [<000000008a164023>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<0000000042773346>] nmi_cpu_backtrace.cold+0x47/0x87 lib/nmi_backtrace.c:99 [<0000000056209a96>] nmi_trigger_cpumask_backtrace+0x124/0x155 lib/nmi_backtrace.c:60 [<000000002951d85d>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37 [<00000000c839cccf>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline] [<00000000c839cccf>] check_hung_task kernel/hung_task.c:126 [inline] [<00000000c839cccf>] check_hung_uninterruptible_tasks kernel/hung_task.c:183 [inline] [<00000000c839cccf>] watchdog+0x670/0xaf0 kernel/hung_task.c:263 [<00000000f19923e1>] kthread+0x278/0x310 kernel/kthread.c:211 [<00000000ab88fd26>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:375 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 2220 Comm: syz-executor335 Not tainted 4.9.189+ #2 task: 00000000bcba249e task.stack: 00000000e75d13bb RIP: 0010:[] c [<00000000fdbe3147>] unwind_next_frame.part.0+0x3d/0x1a0 arch/x86/kernel/unwind_frame.c:60 RSP: 0018:ffff8801c7a37728 EFLAGS: 00000296 RAX: dffffc0000000000 RBX: ffff8801c7a377e0 RCX: 0000000000000004 RDX: ffffed0038f46ee6 RSI: ffffffff814fdd3f RDI: ffff8801c7a37808 RBP: ffff8801c7a377b8 R08: 0000000000000001 R09: ffff8801c7a37808 R10: ffffed0038f46f03 R11: ffff8801c7a3781f R12: 1ffff10038f46ee6 R13: 0000000000000000 R14: ffff8801c7a37790 R15: ffff8801da497140 FS: 0000000000b2c940(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004bf968 CR3: 00000001cae90000 CR4: 00000000001606b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff8801c7a377f0c 0000000041b58ab3c ffffffff82e2a5a6c ffff8801c7a377d0c ffffffff810ae6bcc 0000000041b58ab3c ffffffff82e2a5c3c ffffffff810ae5d0c ffff8801c7a378a0c 0000000000000000c ffffed0038f46f14c 1ffff10038f46f15c Call Trace: [<00000000fd8fde45>] unwind_next_frame+0x32/0x50 arch/x86/kernel/unwind_frame.c:64 [<000000005566871b>] __save_stack_trace+0x7a/0xf0 arch/x86/kernel/stacktrace.c:42 [<00000000cff677a1>] save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57 [<00000000b7b19e25>] save_stack mm/kasan/kasan.c:512 [inline] [<00000000b7b19e25>] set_track mm/kasan/kasan.c:524 [inline] [<00000000b7b19e25>] kasan_kmalloc.part.0+0x62/0xf0 mm/kasan/kasan.c:616 [<00000000e1db3e41>] kasan_kmalloc+0xb7/0xd0 mm/kasan/kasan.c:601 [<00000000785d0e49>] kasan_slab_alloc+0xf/0x20 mm/kasan/kasan.c:554 [<000000001f5f3083>] slab_post_alloc_hook mm/slab.h:417 [inline] [<000000001f5f3083>] slab_alloc_node mm/slub.c:2715 [inline] [<000000001f5f3083>] slab_alloc mm/slub.c:2723 [inline] [<000000001f5f3083>] kmem_cache_alloc+0xd5/0x2b0 mm/slub.c:2728 [<00000000d5b923b9>] anon_vma_chain_alloc mm/rmap.c:125 [inline] [<00000000d5b923b9>] anon_vma_clone+0xde/0x4a0 mm/rmap.c:266 [<000000000765d82b>] anon_vma_fork+0x87/0x4a0 mm/rmap.c:329 [<0000000046f7f1db>] dup_mmap kernel/fork.c:630 [inline] [<0000000046f7f1db>] dup_mm kernel/fork.c:1158 [inline] [<0000000046f7f1db>] copy_mm kernel/fork.c:1212 [inline] [<0000000046f7f1db>] copy_process.part.0+0x40be/0x6690 kernel/fork.c:1800 [<0000000063049b94>] copy_process kernel/fork.c:1586 [inline] [<0000000063049b94>] _do_fork+0x1c1/0xd50 kernel/fork.c:2111 [<00000000657fd2a4>] SYSC_clone kernel/fork.c:2223 [inline] [<00000000657fd2a4>] SyS_clone+0x37/0x50 kernel/fork.c:2217 [<00000000065a8d73>] do_syscall_64+0x1ad/0x5c0 arch/x86/entry/common.c:288 [<0000000010ad5730>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb Code: c4c c8d c75 cd8 c41 c55 c41 c54 c4c c8d ca5 c78 cff cff cff c49 cc1 cec c03 c53 c48 c89 cfb c48 c83 cc7 c28 c49 c8d c14 c04 c48 c83 cec c68 c48 cc7 c45 c80 ca6 ca5 ce2 c82 c<48> cc7 c85 c78 cff cff cff cb3 c8a cb5 c41 c48 cc7 c45 c88 ce0 cdf c0a c81 cc7 c02 c