INFO: task syz-executor:14746 blocked for more than 143 seconds.
      Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:21960 pid:14746 tgid:14746 ppid:1      task_flags:0x400140 flags:0x00004004
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 v9fs_evict_inode+0x170/0x320
 evict+0x504/0x9c0
 __dentry_kill+0x209/0x660
 dput+0x19f/0x2b0
 shrink_dcache_for_umount+0xa0/0x170
 generic_shutdown_super+0x67/0x2c0
 kill_anon_super+0x3b/0x70
 v9fs_kill_super+0x4c/0x90
 deactivate_locked_super+0xbc/0x130
 cleanup_mnt+0x425/0x4c0
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xec/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5c7bf8ff17
RSP: 002b:00007ffdaa302e38 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f5c7c011c05 RCX: 00007f5c7bf8ff17
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdaa302ef0
RBP: 00007ffdaa302ef0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffdaa303f80
R13: 00007f5c7c011c05 R14: 000000000005801b R15: 00007ffdaa303fc0
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 34 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250
 nmi_cpu_backtrace+0x39e/0x3d0
 nmi_trigger_cpumask_backtrace+0x17a/0x300
 watchdog+0xf93/0xfe0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 21640 Comm: syz.9.5763 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:folio_remove_rmap_ptes+0x5/0xaf0
Code: ff e9 8b f9 ff ff 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 55 <41> 57 41 56 41 55 41 54 53 48 83 ec 58 49 89 cd 89 d5 49 89 f4 48
RSP: 0018:ffffc90003cdf390 EFLAGS: 00000246
RAX: ffffc90003cdf880 RBX: ffff888133f4ca80 RCX: ffff88810dd59800
RDX: 0000000000000001 RSI: ffffea00047ae780 RDI: ffffea00047ae780
RBP: ffffc90003cdf650 R08: ffff888101e1a1ab R09: 1ffff110203c3435
R10: dffffc0000000000 R11: ffffed10203c3436 R12: 0000000000000000
R13: 0000555556150000 R14: 0000000000000000 R15: ffffc90003cdf860
FS:  0000000000000000(0000) GS:ffff8880b861b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff17f7cf88 CR3: 000000000df36000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 unmap_page_range+0x1f7f/0x4370
 unmap_vmas+0x399/0x580
 exit_mmap+0x248/0xb50
 __mmput+0x118/0x420
 exit_mm+0x1da/0x2c0
 do_exit+0x648/0x2300
 do_group_exit+0x21c/0x2d0
 get_signal+0x1286/0x1340
 arch_do_signal_or_restart+0x9a/0x750
 exit_to_user_mode_loop+0x75/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f75a13c14a5
Code: Unable to access opcode bytes at 0x7f75a13c147b.
RSP: 002b:00007f75a2168f80 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007f75a15b5fa0 RCX: 00007f75a13c14a5
RDX: 00007f75a2168fc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f75a1411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007f75a15b6038 R14: 00007f75a15b5fa0 R15: 00007ffd5c1837d8
 </TASK>
