binder: send failed reply for transaction 12, target dead ip6_tunnel: ip6tnl1 xmit: Local address not yet configured! INFO: task syz-executor.2:30478 blocked for more than 140 seconds. Not tainted 4.9.167+ #37 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D27976 30478 2125 0x00000004 ffff8801cce74740 ffff88018156d800 ffff8801db621000 ffff8801ce1c97c0 ffff8801db621018 ffff88016d9a77c8 ffffffff827ffcae 0000000000000000 ffff8801cce74740 00ff88016d9a77f8 ffff8801db6218f0 1ffff1002db34ee8 Call Trace: [<00000000c9024768>] schedule+0x92/0x1c0 kernel/sched/core.c:3546 [<000000004625098e>] schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3579 [<00000000724d8165>] __mutex_lock_common kernel/locking/mutex.c:582 [inline] [<00000000724d8165>] mutex_lock_nested+0x38d/0x920 kernel/locking/mutex.c:621 [<0000000054237895>] blkdev_reread_part+0x1f/0x40 block/ioctl.c:189 [<0000000058d15d27>] loop_reread_partitions+0x7c/0x90 drivers/block/loop.c:638 [<000000002af83638>] loop_set_status+0xc02/0x1260 drivers/block/loop.c:1197 [<0000000033488d32>] loop_set_status64+0xd7/0x130 drivers/block/loop.c:1306 [<000000000ae8c7d0>] lo_ioctl+0x4b8/0x1a10 drivers/block/loop.c:1431 [<00000000b3245333>] __blkdev_driver_ioctl block/ioctl.c:294 [inline] [<00000000b3245333>] blkdev_ioctl+0xe14/0x19e0 block/ioctl.c:590 [<00000000c93265e1>] block_ioctl+0xde/0x120 fs/block_dev.c:1696 [<00000000e98ed7fc>] vfs_ioctl fs/ioctl.c:43 [inline] [<00000000e98ed7fc>] file_ioctl fs/ioctl.c:493 [inline] [<00000000e98ed7fc>] do_vfs_ioctl+0xb87/0x11d0 fs/ioctl.c:677 [<00000000db7bbc50>] SYSC_ioctl fs/ioctl.c:694 [inline] [<00000000db7bbc50>] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:685 [<000000003c86efa9>] do_syscall_64+0x1ad/0x570 arch/x86/entry/common.c:285 [<0000000001d7045d>] 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: [<0000000037e974eb>] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline] #0: (rcu_read_lock){......}, at: [<0000000037e974eb>] watchdog+0x13c/0xae0 kernel/hung_task.c:239 #1: (tasklist_lock){.+.?..}, at: [<00000000a108fc7c>] debug_show_all_locks+0x7f/0x21f kernel/locking/lockdep.c:4339 1 lock held by rsyslogd/1900: #0: (&f->f_pos_lock){+.+.+.}, at: [<000000002de350e3>] __fdget_pos+0xa8/0xd0 fs/file.c:781 2 locks held by getty/2027: #0: (&tty->ldisc_sem){++++++}, at: [<00000000ad349c97>] ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:377 #1: (&ldata->atomic_read_lock){+.+.+.}, at: [<00000000df6bd724>] n_tty_read+0x1fe/0x1820 drivers/tty/n_tty.c:2156 2 locks held by syz-executor.2/12709: #0: (&bdev->bd_mutex){+.+.+.}, at: [<000000004c165b85>] __blkdev_put+0xbb/0x840 fs/block_dev.c:1587 #1: (loop_index_mutex){+.+.+.}, at: [<0000000061dbdd60>] lo_release+0x1e/0x1b0 drivers/block/loop.c:1664 2 locks held by syz-executor.4/19351: #0: (&bdev->bd_mutex){+.+.+.}, at: [<000000004c165b85>] __blkdev_put+0xbb/0x840 fs/block_dev.c:1587 #1: (loop_index_mutex){+.+.+.}, at: [<0000000061dbdd60>] lo_release+0x1e/0x1b0 drivers/block/loop.c:1664 2 locks held by syz-executor.4/25262: #0: (&bdev->bd_mutex){+.+.+.}, at: [<000000004c165b85>] __blkdev_put+0xbb/0x840 fs/block_dev.c:1587 #1: (loop_index_mutex){+.+.+.}, at: [<0000000061dbdd60>] lo_release+0x1e/0x1b0 drivers/block/loop.c:1664 1 lock held by syz-executor.4/2195: #0: (&bdev->bd_mutex){+.+.+.}, at: [<00000000f1f11a37>] blkdev_put+0x2b/0x560 fs/block_dev.c:1629 1 lock held by syz-executor.2/3527: #0: (&bdev->bd_mutex){+.+.+.}, at: [<00000000f1f11a37>] blkdev_put+0x2b/0x560 fs/block_dev.c:1629 1 lock held by syz-executor.4/16981: #0: (&bdev->bd_mutex){+.+.+.}, at: [<00000000f1f11a37>] blkdev_put+0x2b/0x560 fs/block_dev.c:1629 2 locks held by syz-executor.2/30478: #0: (loop_ctl_mutex/1){+.+.+.}, at: [<000000005df92866>] lo_ioctl+0x85/0x1a10 drivers/block/loop.c:1405 #1: (&bdev->bd_mutex){+.+.+.}, at: [<0000000054237895>] blkdev_reread_part+0x1f/0x40 block/ioctl.c:189 3 locks held by syz-executor.4/30472: #0: (&bdev->bd_mutex){+.+.+.}, at: [<000000004c165b85>] __blkdev_put+0xbb/0x840 fs/block_dev.c:1587 #1: (loop_index_mutex){+.+.+.}, at: [<0000000061dbdd60>] lo_release+0x1e/0x1b0 drivers/block/loop.c:1664 #2: (loop_ctl_mutex#2){+.+.+.}, at: [<000000007abba542>] __lo_release drivers/block/loop.c:1642 [inline] #2: (loop_ctl_mutex#2){+.+.+.}, at: [<000000007abba542>] lo_release+0x84/0x1b0 drivers/block/loop.c:1665 1 lock held by syz-executor.1/30484: #0: (&bdev->bd_mutex){+.+.+.}, at: [<000000007909407d>] __blkdev_get+0x10e/0xeb0 fs/block_dev.c:1273 2 locks held by blkid/30482: #0: (&bdev->bd_mutex){+.+.+.}, at: [<000000007909407d>] __blkdev_get+0x10e/0xeb0 fs/block_dev.c:1273 #1: (loop_index_mutex){+.+.+.}, at: [<000000004590b2ae>] lo_open+0x1d/0xb0 drivers/block/loop.c:1622 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 24 Comm: khungtaskd Not tainted 4.9.167+ #37 ffff8801d98d7cc8 ffffffff81b4f011 0000000000000001 0000000000000000 0000000000000001 ffffffff81097401 dffffc0000000000 ffff8801d98d7d00 ffffffff81b5a2cc 0000000000000001 0000000000000000 0000000000000001 Call Trace: [<00000000223b3b54>] __dump_stack lib/dump_stack.c:15 [inline] [<00000000223b3b54>] dump_stack+0xc1/0x120 lib/dump_stack.c:51 [<0000000047aaca46>] nmi_cpu_backtrace.cold+0x47/0x87 lib/nmi_backtrace.c:99 [<00000000a9c7a0a5>] nmi_trigger_cpumask_backtrace+0x124/0x155 lib/nmi_backtrace.c:60 [<000000009bcab11c>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37 [<0000000083db6880>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline] [<0000000083db6880>] check_hung_task kernel/hung_task.c:125 [inline] [<0000000083db6880>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline] [<0000000083db6880>] watchdog+0x661/0xae0 kernel/hung_task.c:239 [<000000003bbc7cfb>] kthread+0x278/0x310 kernel/kthread.c:211 [<00000000bdbf12c1>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at pc 0xffffffff8280ed22