INFO: task syz-executor.2:7064 can't die for more than 143 seconds.
syz-executor.2  R  running task    27552  7064  12132 0x80004006
Call Trace:
 context_switch kernel/sched/core.c:3254 [inline]
 __schedule+0x755/0x1580 kernel/sched/core.c:3880
 preempt_schedule_common+0x4f/0xe0 kernel/sched/core.c:4025
 preempt_schedule+0x4b/0x60 kernel/sched/core.c:4051
INFO: task syz-executor.2:7085 can't die for more than 143 seconds.
syz-executor.2  R  running task    27552  7085  12132 0x80004006
Call Trace:
 context_switch kernel/sched/core.c:3254 [inline]
 __schedule+0x755/0x1580 kernel/sched/core.c:3880
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 1056 Comm: khungtaskd Not tainted 5.3.0-rc1-next-20190725 #52
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+0x172/0x1f0 lib/dump_stack.c:113
 nmi_cpu_backtrace.cold+0x70/0xb2 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x23b/0x28b lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:249 [inline]
 watchdog+0xc54/0x1320 kernel/hung_task.c:333
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7085 Comm: syz-executor.2 Not tainted 5.3.0-rc1-next-20190725 #52
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:loop3+0x45/0x37d
Code: 41 21 d7 45 31 f5 c4 63 7b f0 e0 0d 45 31 d7 c4 63 7b f0 f0 16 89 c6 45 31 e6 c4 63 7b f0 e0 02 44 03 5c 3c 10 09 ce 45 31 e6 <41> 89 c4 21 de 41 21 cc 45 01 ef 45 01 d8 44 09 e6 45 01 f3 45 01
RSP: 0018:ffff8880946d7280 EFLAGS: 00000202
RAX: 00000000fa966804 RBX: 000000008d43315f RCX: 00000000a4e4e09b
RDX: 00000000811a24ef RSI: 00000000fef6e89f RDI: 0000000000000000
RBP: ffff8880946d7528 R08: 00000000429125d3 R09: 000000005b21e790
R10: 00000000703c48e4 R11: 00000000c642f43c R12: 000000003ea59a01
R13: 00000000aee63c17 R14: 0000000027225d58 R15: 0000000071246c80
FS:  00007fb456021700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 000000009678b000 CR4: 00000000001406e0
Call Trace:
 sha256_avx2_update+0x2d/0x40 arch/x86/crypto/sha256_ssse3_glue.c:236
 crypto_shash_update+0xc9/0x120 crypto/shash.c:120
 ima_calc_file_hash_tfm+0x321/0x3e0 security/integrity/ima/ima_crypto.c:361
 ima_calc_file_shash security/integrity/ima/ima_crypto.c:381 [inline]
 ima_calc_file_hash+0x1aa/0x570 security/integrity/ima/ima_crypto.c:446
 ima_collect_measurement+0x50f/0x5c0 security/integrity/ima/ima_api.c:239
 process_measurement+0xcc9/0x16a0 security/integrity/ima/ima_main.c:311
 ima_file_mmap+0x11a/0x130 security/integrity/ima/ima_main.c:371
 security_mmap_file+0x19d/0x1e0 security/security.c:1413
 vm_mmap_pgoff+0xf0/0x230 mm/util.c:387
 ksys_mmap_pgoff+0x278/0x630 mm/mmap.c:1615
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:100 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:91 [inline]
 __x64_sys_mmap+0xe9/0x1b0 arch/x86/kernel/sys_x86_64.c:91
 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459829
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fb456020c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000459829
RDX: 0000000000000004 RSI: 00007fffdffff000 RDI: 0000000020000000
RBP: 000000000075c070 R08: ffffffffffffffff R09: 0000000000000000
R10: 000000000005c831 R11: 0000000000000246 R12: 00007fb4560216d4
R13: 00000000004c5bb9 R14: 00000000004da3a8 R15: 00000000ffffffff