binder: undelivered TRANSACTION_ERROR: 29201
netlink: 16 bytes leftover after parsing attributes in process `syz-executor5'.
INFO: task syz-executor1:11176 blocked for more than 140 seconds.
      Not tainted 4.9.117-g8b21e85 #19
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor1   D28504 11176   3871 0x00000004
 ffff880199e2b000 0000000000000000 ffff8801bda2df80 ffff8801d9a6b000
 ffff8801db321c18 ffff8801a5e3f660 ffffffff839ebd0d ffff8801d63e9d60
 ffffed003ac7d39c ffff8801a5e3f610 00ffffff839edb35 ffff8801db3224e8
Call Trace:
 [<ffffffff839ed30f>] schedule+0x7f/0x1b0 kernel/sched/core.c:3553
 [<ffffffff815c8102>] d_wait_lookup fs/dcache.c:2455 [inline]
 [<ffffffff815c8102>] d_alloc_parallel+0xeb2/0x17c0 fs/dcache.c:2537
 [<ffffffff815950bc>] lookup_slow+0x19c/0x470 fs/namei.c:1650
 [<ffffffff815a16e6>] walk_component+0x716/0x1bb0 fs/namei.c:1784
 [<ffffffff815a4046>] lookup_last fs/namei.c:2266 [inline]
 [<ffffffff815a4046>] path_lookupat.isra.41+0x186/0x410 fs/namei.c:2283
 [<ffffffff815a9af7>] filename_lookup.part.55+0x177/0x370 fs/namei.c:2317
 [<ffffffff815a9eb3>] filename_lookup fs/namei.c:2310 [inline]
 [<ffffffff815a9eb3>] user_path_at_empty+0x53/0x70 fs/namei.c:2578
 [<ffffffff8161c16f>] user_path_at include/linux/namei.h:55 [inline]
 [<ffffffff8161c16f>] do_utimes+0x17f/0x2c0 fs/utimes.c:155
 [<ffffffff8161c84d>] SYSC_futimesat fs/utimes.c:214 [inline]
 [<ffffffff8161c84d>] SyS_futimesat fs/utimes.c:189 [inline]
 [<ffffffff8161c84d>] SYSC_utimes fs/utimes.c:220 [inline]
 [<ffffffff8161c84d>] SyS_utimes+0x13d/0x1b0 fs/utimes.c:217
 [<ffffffff81006316>] do_syscall_64+0x1a6/0x490 arch/x86/entry/common.c:282
 [<ffffffff839fcc13>] 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: [<ffffffff813667fc>] check_hung_uninterruptible_tasks kernel/hung_task.c:168 [inline]
 #0:  (rcu_read_lock){......}, at: [<ffffffff813667fc>] watchdog+0x11c/0xa20 kernel/hung_task.c:239
 #1:  (tasklist_lock){.+.+..}, at: [<ffffffff81426017>] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4336
1 lock held by rsyslogd/3678:
 #0:  (&f->f_pos_lock){+.+.+.}, at: [<ffffffff815d859c>] __fdget_pos+0xac/0xd0 fs/file.c:781
2 locks held by getty/3774:
 #0:  (&tty->ldisc_sem){++++++}, at: [<ffffffff839fadb2>] ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:367
 #1:  (&ldata->atomic_read_lock){+.+...}, at: [<ffffffff821207f2>] n_tty_read+0x202/0x16e0 drivers/tty/n_tty.c:2142
1 lock held by syz-executor1/11103:
 #0:  (&sb->s_type->i_mutex_key#22){++++++}, at: [<ffffffff81595061>] inode_lock_shared include/linux/fs.h:776 [inline]
 #0:  (&sb->s_type->i_mutex_key#22){++++++}, at: [<ffffffff81595061>] lookup_slow+0x141/0x470 fs/namei.c:1645
1 lock held by syz-executor1/11176:
 #0:  (&sb->s_type->i_mutex_key#22){++++++}, at: [<ffffffff81595061>] inode_lock_shared include/linux/fs.h:776 [inline]
 #0:  (&sb->s_type->i_mutex_key#22){++++++}, at: [<ffffffff81595061>] lookup_slow+0x141/0x470 fs/namei.c:1645

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

NMI backtrace for cpu 1
CPU: 1 PID: 519 Comm: khungtaskd Not tainted 4.9.117-g8b21e85 #19
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801d9767d08 ffffffff81eb4be9 0000000000000000 0000000000000001
 0000000000000001 0000000000000001 ffffffff810b9bd0 ffff8801d9767d40
 ffffffff81ebfee7 0000000000000001 0000000000000000 0000000000000003
Call Trace:
 [<ffffffff81eb4be9>] __dump_stack lib/dump_stack.c:15 [inline]
 [<ffffffff81eb4be9>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff81ebfee7>] nmi_cpu_backtrace.cold.2+0x48/0x87 lib/nmi_backtrace.c:99
 [<ffffffff81ebfe7a>] nmi_trigger_cpumask_backtrace+0x12a/0x14f lib/nmi_backtrace.c:60
 [<ffffffff810b9cd4>] arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:37
 [<ffffffff81366d94>] trigger_all_cpu_backtrace include/linux/nmi.h:58 [inline]
 [<ffffffff81366d94>] check_hung_task kernel/hung_task.c:125 [inline]
 [<ffffffff81366d94>] check_hung_uninterruptible_tasks kernel/hung_task.c:182 [inline]
 [<ffffffff81366d94>] watchdog+0x6b4/0xa20 kernel/hung_task.c:239
 [<ffffffff8119d0ed>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff839fcddc>] 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
CPU: 0 PID: 1834 Comm: kworker/0:2 Not tainted 4.9.117-g8b21e85 #19
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_power_efficient gc_worker
c
task: ffff8801cea66000 task.stack: ffff8801cea98000
RIP: 0010:[<ffffffff81230ace>] 
c [<ffffffff81230ace>] lock_is_held+0xee/0x140 kernel/locking/lockdep.c:3795
RSP: 0018:ffff8801cea9fb70  EFLAGS: 00000046
RAX: 0000000000000007 RBX: 0000000000000246 RCX: ffff8801cea66000
RDX: 0000000000000000 RSI: ffffffff846def60 RDI: ffff8801cea668c4
RBP: ffff8801cea9fb88 R08: ffff8801cea66910 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801cea66000
R13: 0000000000000000 R14: 00000000000003dc R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8500524000 CR3: 00000001b9e4b000 CR4: 00000000001606f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Stack:
 0000000000017c19
c 0000000000000000
c ffffffff8411c1e0
c ffff8801cea9fbc0
c
 ffffffff811bb5cf
c 0000000000017c19
c dffffc0000000000
c ffffffff84c65be0
c
 fffffbfff08c1200
c 0000000000000000
c ffff8801cea9fc40
c ffffffff831f5093
c
Call Trace:
 [<ffffffff811bb5cf>] ___might_sleep+0x1ff/0x260 kernel/sched/core.c:7954
 [<ffffffff831f5093>] gc_worker+0x343/0x620 net/netfilter/nf_conntrack_core.c:988
 [<ffffffff8118d181>] process_one_work+0x7e1/0x1500 kernel/workqueue.c:2092
 [<ffffffff8118df76>] worker_thread+0xd6/0x10a0 kernel/workqueue.c:2226
 [<ffffffff8119d0ed>] kthread+0x26d/0x300 kernel/kthread.c:211
 [<ffffffff839fcddc>] ret_from_fork+0x5c/0x70 arch/x86/entry/entry_64.S:373
Code: 
c00 
c00 
c41 
c89 
cc5 
c48 
cb8 
c00 
c00 
c00 
c00 
c00 
cfc 
cff 
cdf 
c48 
c89 
cfa 
c48 
cc1 
cea 
c03 
c0f 
cb6 
c14 
c02 
c48 
c89 
cf8 
c83 
ce0 
c07 
c83 
cc0 
c03 
c38 
cd0 
c7c 
c04 
c84 
cd2 
c75 
c3a 
c<41> 
cc7 
c84 
c24 
cc4 
c08 
c00 
c00 
c00 
c00 
c00 
c00 
c48 
c89 
cdf 
c57 
c9d 
c0f 
c1f 
c44 
c00 
c