INFO: task syz-executor565:9837 blocked for more than 143 seconds.
      Not tainted 5.3.0-rc3+ #100
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor565 D28384  9837   9817 0x00004004
Call Trace:
 context_switch kernel/sched/core.c:3254 [inline]
 __schedule+0x755/0x1580 kernel/sched/core.c:3880
 schedule+0xa8/0x270 kernel/sched/core.c:3944
 rwsem_down_read_slowpath+0x4cc/0xfb0 kernel/locking/rwsem.c:1090
 __down_read kernel/locking/rwsem.c:1320 [inline]
 down_read+0x1f4/0x3f0 kernel/locking/rwsem.c:1463
 do_user_addr_fault arch/x86/mm/fault.c:1392 [inline]
 __do_page_fault+0xaa2/0xdd0 arch/x86/mm/fault.c:1506
 do_page_fault+0x38/0x590 arch/x86/mm/fault.c:1530
 page_fault+0x39/0x40 arch/x86/entry/entry_64.S:1202
RIP: 0033:0x4ab79d
Code: Bad RIP value.
RSP: 002b:00007ffef0912cf0 EFLAGS: 00010206
RAX: 00000000004ab8c0 RBX: 0000000000000001 RCX: 00000000006e0330
RDX: 0000000000407620 RSI: 0000000000000000 RDI: 00000000004ccb90
RBP: 00007ffef0912d10 R08: 000000037ffffa00 R09: 000000037ffffa00
R10: 00007ffef0912d80 R11: 0000000000000000 R12: 0000000000000001
R13: 00000000006e0320 R14: 000000000000002d R15: 20c49ba5e353f7cf
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc3+ #100
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:205 [inline]
 watchdog+0x9d0/0xef0 kernel/hung_task.c:289
 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: 9839 Comm: syz-executor565 Not tainted 5.3.0-rc3+ #100
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kasan_mem_to_shadow include/linux/kasan.h:28 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:136 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:166 [inline]
RIP: 0010:check_memory_region_inline mm/kasan/generic.c:182 [inline]
RIP: 0010:check_memory_region+0x45/0x1a0 mm/kasan/generic.c:192
Code: 89 e5 41 55 41 54 53 0f 86 07 01 00 00 4c 8d 5c 37 ff 49 89 f8 48 b8 00 00 00 00 00 fc ff df 4d 89 da 49 c1 e8 03 4d 8d 24 00 <49> c1 ea 03 49 01 c2 4c 89 e0 49 8d 5a 01 49 89 d9 4d 29 e1 49 83
RSP: 0018:ffff88808e20fa68 EFLAGS: 00000a02
RAX: dffffc0000000000 RBX: ffff888093470868 RCX: ffffffff818ae252
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888093470868
RBP: ffff88808e20fa80 R08: 1ffff1101268e10d R09: ffffed10119560cf
R10: ffff88809347086b R11: ffff88809347086b R12: ffffed101268e10d
R13: ffff88808e20fb70 R14: 0000000000000002 R15: ffff88808cab0670
FS:  00007f3a14287700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 00000000923f3000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __kasan_check_read+0x11/0x20 mm/kasan/common.c:92
 atomic_read include/asm-generic/atomic-instrumented.h:26 [inline]
 atomic_fetch_add_unless include/linux/atomic-fallback.h:1086 [inline]
 atomic_add_unless include/linux/atomic-fallback.h:1111 [inline]
 atomic_inc_not_zero include/linux/atomic-fallback.h:1127 [inline]
 perf_mmap+0x7c2/0x19b0 kernel/events/core.c:5707
 call_mmap include/linux/fs.h:1875 [inline]
 mmap_region+0xc35/0x1760 mm/mmap.c:1788
 do_mmap+0x82e/0x1090 mm/mmap.c:1561
 do_mmap_pgoff include/linux/mm.h:2374 [inline]
 vm_mmap_pgoff+0x1c5/0x230 mm/util.c:391
 ksys_mmap_pgoff+0x4aa/0x630 mm/mmap.c:1611
 __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+0xfd/0x6a0 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4468f9
Code: e8 5c b3 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f3a14286da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 00000000004468f9
RDX: 0000000000000000 RSI: 0000000000003000 RDI: 0000000020ffd000
RBP: 00000000006dbc30 R08: 0000000000000003 R09: 0000000000000000
R10: 0000000000001011 R11: 0000000000000246 R12: 00000000006dbc3c
R13: 00007ffef0912cef R14: 00007f3a142879c0 R15: 20c49ba5e353f7cf