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BUG: KCSAN: data-race in fuse_get_req / fuse_set_initialized

write to 0xffff8880afc92104 of 4 bytes by task 12717 on cpu 0:
 fuse_set_initialized+0x15/0x30 fs/fuse/dev.c:81
 process_init_reply+0xa88/0xab0 fs/fuse/inode.c:983
 fuse_request_end+0x757/0x7a0 fs/fuse/dev.c:326
 fuse_dev_do_write+0xbfd/0xe20 fs/fuse/dev.c:1910
 fuse_dev_write+0x98/0xe0 fs/fuse/dev.c:1932
 call_write_iter include/linux/fs.h:1882 [inline]
 new_sync_write fs/read_write.c:503 [inline]
 vfs_write+0x665/0x6f0 fs/read_write.c:578
 ksys_write+0xce/0x180 fs/read_write.c:631
 __do_sys_write fs/read_write.c:643 [inline]
 __se_sys_write fs/read_write.c:640 [inline]
 __x64_sys_write+0x3e/0x50 fs/read_write.c:640
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff8880afc92104 of 4 bytes by task 12711 on cpu 1:
 fuse_block_alloc fs/fuse/dev.c:86 [inline]
 fuse_get_req+0xed/0x510 fs/fuse/dev.c:113
 fuse_simple_request+0x71/0xd50 fs/fuse/dev.c:492
 fuse_do_setattr+0x815/0xd00 fs/fuse/dir.c:1569
 fuse_setattr+0x2b1/0x590 fs/fuse/dir.c:1670
 notify_change+0x7d7/0xa80 fs/attr.c:336
 vfs_utimes+0x2b1/0x3d0 fs/utimes.c:65
 do_utimes_path fs/utimes.c:97 [inline]
 do_utimes fs/utimes.c:143 [inline]
 do_futimesat fs/utimes.c:197 [inline]
 __do_sys_utimes fs/utimes.c:210 [inline]
 __se_sys_utimes+0xfb/0x1f0 fs/utimes.c:207
 __x64_sys_utimes+0x2d/0x40 fs/utimes.c:207
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 12711 Comm: syz-executor.3 Not tainted 5.9.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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