binder: 7313:7317 transaction failed 29189/-3, size 24-8 line 3136
binder: undelivered TRANSACTION_ERROR: 29189
binder: send failed reply for transaction 42 to 7313:7314
binder: undelivered TRANSACTION_ERROR: 29201
binder: undelivered TRANSACTION_ERROR: 29189
INFO: task syz-executor3:7295 blocked for more than 140 seconds.
      Not tainted 4.9.135+ #20
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor3   D25720  7295   2092 0x20020004
 ffff8801d50b5f00 0000000000000000 ffff8801d6f6dd80 ffffffff8302a180
 ffff8801db621018 ffff8801d3a3f120 ffffffff82806912 ffff8801d50b67b0
 1ffff1003a747e18 ffffffff83c48078 0000000041b58ab3 ffff8801db6218f0
Call Trace:
 [<ffffffff82807e3f>] schedule+0x7f/0x1b0 kernel/sched/core.c:3553
 [<ffffffff828135e5>] schedule_timeout+0x735/0xe20 kernel/time/timer.c:1771
 [<ffffffff828060da>] io_schedule_timeout+0x1ba/0x390 kernel/sched/core.c:5176
 [<ffffffff815d6774>] io_schedule include/linux/sched.h:460 [inline]
 [<ffffffff815d6774>] dio_await_one fs/direct-io.c:461 [inline]
 [<ffffffff815d6774>] dio_await_completion fs/direct-io.c:515 [inline]
 [<ffffffff815d6774>] do_blockdev_direct_IO fs/direct-io.c:1331 [inline]
 [<ffffffff815d6774>] __blockdev_direct_IO+0x8b54/0xbd10 fs/direct-io.c:1360
 [<ffffffff816de2a8>] ext4_direct_IO_write fs/ext4/inode.c:3507 [inline]
 [<ffffffff816de2a8>] ext4_direct_IO+0x978/0x29c0 fs/ext4/inode.c:3663
 [<ffffffff81411f54>] generic_file_direct_write+0x284/0x510 mm/filemap.c:2655
 [<ffffffff814123ff>] __generic_file_write_iter+0x21f/0x540 mm/filemap.c:2835
 [<ffffffff816b321d>] ext4_file_write_iter+0x63d/0xd70 fs/ext4/file.c:165
 [<ffffffff815fb612>] aio_write+0x2f2/0x510 fs/aio.c:1505
 [<ffffffff816001d5>] io_submit_one fs/aio.c:1586 [inline]
 [<ffffffff816001d5>] do_io_submit+0xd35/0x1080 fs/aio.c:1654
 [<ffffffff81617053>] C_SYSC_io_submit fs/compat.c:637 [inline]
 [<ffffffff81617053>] compat_SyS_io_submit+0xe3/0x130 fs/compat.c:622
 [<ffffffff81006311>] do_syscall_32_irqs_on arch/x86/entry/common.c:328 [inline]
 [<ffffffff81006311>] do_fast_syscall_32+0x2f1/0xa10 arch/x86/entry/common.c:390
 [<ffffffff828180e0>] entry_SYSENTER_compat+0x90/0xa2 arch/x86/entry/entry_64_compat.S:137

Showing all locks held in the system:
2 locks held by khungtaskd/24:
 #0:  (rcu_read_lock){......}, at: [<ffffffff8131bb4c>] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff8131bb4c>] watchdog+0x11c/0xa20 kernel/hung_task.c:239
 #1:  (tasklist_lock){.+.+..}, at: [<ffffffff813fe314>] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336
2 locks held by getty/2022:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff82814c62>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+.+.}, at: [<ffffffff81d36fc2>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
1 lock held by syz-executor4/7274:
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff8150dd00>] file_start_write include/linux/fs.h:2640 [inline]
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff8150dd00>] do_sendfile+0xa80/0xc30 fs/read_write.c:1392
2 locks held by syz-executor3/7295:
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff815fb713>] file_start_write include/linux/fs.h:2640 [inline]
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff815fb713>] aio_write+0x3f3/0x510 fs/aio.c:1504
 #1:  (&sb->s_type->i_mutex_key#9){++++++}, at: [<ffffffff816b2d02>] inode_lock include/linux/fs.h:766 [inline]
 #1:  (&sb->s_type->i_mutex_key#9){++++++}, at: [<ffffffff816b2d02>] ext4_file_write_iter+0x122/0xd70 fs/ext4/file.c:100
2 locks held by syz-executor3/7315:
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff815755df>] sb_start_write include/linux/fs.h:1573 [inline]
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff815755df>] mnt_want_write+0x3f/0xb0 fs/namespace.c:391
 #1:  (&sb->s_type->i_mutex_key#9){++++++}, at: [<ffffffff81503368>] inode_lock include/linux/fs.h:766 [inline]
 #1:  (&sb->s_type->i_mutex_key#9){++++++}, at: [<ffffffff81503368>] do_truncate2+0x128/0x1f0 fs/open.c:61
2 locks held by syz-executor3/7322:
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff8150dd00>] file_start_write include/linux/fs.h:2640 [inline]
 #0:  (sb_writers#4){.+.+.+}, at: [<ffffffff8150dd00>] do_sendfile+0xa80/0xc30 fs/read_write.c:1392
 #1:  (&sb->s_type->i_mutex_key#9){++++++}, at: [<ffffffff816dde2f>] inode_lock_shared include/linux/fs.h:776 [inline]
 #1:  (&sb->s_type->i_mutex_key#9){++++++}, at: [<ffffffff816dde2f>] ext4_direct_IO_read fs/ext4/inode.c:3594 [inline]
 #1:  (&sb->s_type->i_mutex_key#9){++++++}, at: [<ffffffff816dde2f>] ext4_direct_IO+0x4ff/0x29c0 fs/ext4/inode.c:3661

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

NMI backtrace for cpu 0
CPU: 0 PID: 24 Comm: khungtaskd Not tainted 4.9.135+ #20
 ffff8801d98ffd08 ffffffff81b42b89 0000000000000000 0000000000000000
 0000000000000000 0000000000000001 ffffffff81098330 ffff8801d98ffd40
 ffffffff81b4dc99 0000000000000000 0000000000000000 0000000000000003
Call Trace:
 [<ffffffff81b42b89>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81b42b89>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81b4dc99>] nmi_cpu_backtrace.cold.0+0x48/0x87 lib/nmi_backtrace.c:99
 [<ffffffff81b4dc2c>] nmi_trigger_cpumask_backtrace+0x12c/0x151 lib/nmi_backtrace.c:60
 [<ffffffff81098434>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37
 [<ffffffff8131c0dd>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<ffffffff8131c0dd>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff8131c0dd>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff8131c0dd>] watchdog+0x6ad/0xa20 kernel/hung_task.c:239
 [<ffffffff811428dd>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff82816d5c>] 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 0xffffffff828157a6