INFO: task syz-executor.1:10112 blocked for more than 143 seconds.
      Not tainted 5.8.0-rc2-next-20200626-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1  D28840 10112   6955 0x00000006
Call Trace:
 context_switch kernel/sched/core.c:3455 [inline]
 __schedule+0x8e1/0x1eb0 kernel/sched/core.c:4180
 schedule+0xd0/0x2a0 kernel/sched/core.c:4255
 bit_wait+0x12/0xa0 kernel/sched/wait_bit.c:199
 __wait_on_bit+0x60/0x190 kernel/sched/wait_bit.c:49
 out_of_line_wait_on_bit+0xd5/0x110 kernel/sched/wait_bit.c:64
 wait_on_bit include/linux/wait_bit.h:76 [inline]
 wait_for_key_construction+0x10b/0x140 security/keys/request_key.c:664
 request_key_tag+0x7a/0xb0 security/keys/request_key.c:705
 request_key include/linux/key.h:343 [inline]
 request_user_key security/keys/encrypted-keys/encrypted.c:307 [inline]
 request_master_key+0xcb/0x300 security/keys/encrypted-keys/encrypted.c:422
 encrypted_read+0x207/0x790 security/keys/encrypted-keys/encrypted.c:922
 __keyctl_read_key security/keys/keyctl.c:810 [inline]
 keyctl_read_key+0x2bb/0x4d0 security/keys/keyctl.c:900
 __do_sys_keyctl+0x1db/0x4d0 security/keys/keyctl.c:1911
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45cb19
Code: Bad RIP value.
RSP: 002b:00007f9227a7bc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000fa
RAX: ffffffffffffffda RBX: 00000000004f6080 RCX: 000000000045cb19
RDX: 0000000020000240 RSI: 000000000cedd2b9 RDI: 000000000000000b
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000349b7f55 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000072a R14: 00000000004ca32c R15: 00007f9227a7c6d4

Showing all locks held in the system:
1 lock held by khungtaskd/1148:
 #0: ffffffff89bc3180 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:5779
1 lock held by in:imklog/6515:
 #0: ffff8880a2d843f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:928
1 lock held by syz-executor.1/10112:
 #0: ffff888099b32250 (&type->lock_class#3){.+.+}-{3:3}, at: __keyctl_read_key security/keys/keyctl.c:807 [inline]
 #0: ffff888099b32250 (&type->lock_class#3){.+.+}-{3:3}, at: keyctl_read_key+0x259/0x4d0 security/keys/keyctl.c:900

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

NMI backtrace for cpu 0
CPU: 0 PID: 1148 Comm: khungtaskd Not tainted 5.8.0-rc2-next-20200626-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x18f/0x20d lib/dump_stack.c:118
 nmi_cpu_backtrace.cold+0x70/0xb1 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1b3/0x223 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:147 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:253 [inline]
 watchdog+0xd89/0xf30 kernel/hung_task.c:339
 kthread+0x3b5/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60