device sit0 entered promiscuous mode
INFO: task syz-executor5:7828 blocked for more than 120 seconds.
      Not tainted 4.9.96-g71fce1e #13
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor5   D27368  7828   3873 0x00000004
 ffff8801c4286000 ffff8801c9865f80 ffff8801c98664c0 ffff8801b5e14800
 ffff8801db221b98 ffff8801b8087320 ffffffff839e240d 1ffff10037010e58
 ffffffff85342240 0000000041b58ab3 00ffffff841c08a0 ffff8801db222468
Call Trace:
 [<ffffffff839e3a0f>] schedule+0x7f/0x1b0 kernel/sched/core.c:3557
 [<ffffffff839efe21>] schedule_timeout+0x861/0xf70 kernel/time/timer.c:1768
 [<ffffffff839e1bea>] io_schedule_timeout+0x1ba/0x390 kernel/sched/core.c:5180
 [<ffffffff8164082b>] io_schedule include/linux/sched.h:460 [inline]
 [<ffffffff8164082b>] dio_await_one fs/direct-io.c:461 [inline]
 [<ffffffff8164082b>] dio_await_completion fs/direct-io.c:515 [inline]
 [<ffffffff8164082b>] do_blockdev_direct_IO+0x2d5b/0x5a80 fs/direct-io.c:1331
 [<ffffffff816435f5>] __blockdev_direct_IO+0xa5/0xd0 fs/direct-io.c:1360
 [<ffffffff8162d1a0>] blkdev_direct_IO+0xa0/0xd0 fs/block_dev.c:183
 [<ffffffff8143c760>] generic_file_read_iter+0x660/0x1a90 mm/filemap.c:1951
 [<ffffffff8162fda5>] blkdev_read_iter+0x105/0x170 fs/block_dev.c:1738
 [<ffffffff816127a9>] generic_file_splice_read+0x2c9/0x4f0 fs/splice.c:309
 [<ffffffff81610efc>] do_splice_to+0x10c/0x170 fs/splice.c:899
 [<ffffffff8161119f>] splice_direct_to_actor+0x23f/0x7e0 fs/splice.c:971
 [<ffffffff816118e3>] do_splice_direct+0x1a3/0x270 fs/splice.c:1080
 [<ffffffff81572eb0>] do_sendfile+0x4f0/0xc60 fs/read_write.c:1393
 [<ffffffff81574f31>] SYSC_sendfile64 fs/read_write.c:1448 [inline]
 [<ffffffff81574f31>] SyS_sendfile64+0xd1/0x160 fs/read_write.c:1440
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff839f3313>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb

Showing all locks held in the system:
2 locks held by khungtaskd/519:
 #0:  (rcu_read_lock){......}, at: [<ffffffff813646ec>] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff813646ec>] watchdog+0x11c/0xa20 kernel/hung_task.c:239
 #1:  (tasklist_lock){.+.+..}, at: [<ffffffff81423ce0>] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336
1 lock held by rsyslogd/3679:
 #0:  (&f->f_pos_lock){+.+.+.}, at: [<ffffffff815d579c>] __fdget_pos+0xac/0xd0 fs/file.c:781
2 locks held by getty/3775:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff839f14b2>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff8211c792>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2133

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 519 Comm: khungtaskd Not tainted 4.9.96-g71fce1e #13
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d85b7d08 ffffffff81eb0b69 0000000000000000 0000000000000000
 0000000000000000 0000000000000001 ffffffff810b7d60 ffff8801d85b7d40
 ffffffff81ebbe97 0000000000000000 0000000000000000 0000000000000003
Call Trace:
 [<ffffffff81eb0b69>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81eb0b69>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81ebbe97>] nmi_cpu_backtrace.cold.2+0x48/0x87 lib/nmi_backtrace.c:99
 [<ffffffff81ebbe2a>] nmi_trigger_cpumask_backtrace+0x12a/0x14f lib/nmi_backtrace.c:60
 [<ffffffff810b7e64>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37
 [<ffffffff81364c84>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<ffffffff81364c84>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff81364c84>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff81364c84>] watchdog+0x6b4/0xa20 kernel/hung_task.c:239
 [<ffffffff8119ad5d>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff839f34dc>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff839f1f16