==================================================================
BUG: KCSAN: data-race in __filemap_remove_folio / folio_mapping

write to 0xffffea00053a5998 of 8 bytes by task 17992 on cpu 1:
 page_cache_delete mm/filemap.c:142 [inline]
 __filemap_remove_folio+0x1b7/0x2c0 mm/filemap.c:228
 filemap_remove_folio+0x69/0x210 mm/filemap.c:262
 truncate_inode_folio+0x14c/0x160 mm/truncate.c:227
 shmem_undo_range+0x28a/0xce0 mm/shmem.c:946
 shmem_truncate_range mm/shmem.c:1038 [inline]
 shmem_evict_inode+0x115/0x560 mm/shmem.c:1120
 evict+0x1aa/0x410 fs/inode.c:590
 iput_final fs/inode.c:1670 [inline]
 iput+0x3ef/0x580 fs/inode.c:1696
 dentry_unlink_inode+0x23d/0x250 fs/dcache.c:376
 __dentry_kill+0x293/0x450 fs/dcache.c:582
 dput+0x218/0x430 fs/dcache.c:888
 __fput+0x3e4/0x520 fs/file_table.c:293
 ____fput+0x11/0x20 fs/file_table.c:313
 task_work_run+0x8e/0x110 kernel/task_work.c:164
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
 exit_to_user_mode_prepare+0x160/0x190 kernel/entry/common.c:207
 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
 syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:300
 do_syscall_64+0x50/0xd0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffffea00053a5998 of 8 bytes by task 12825 on cpu 0:
 folio_mapping+0x92/0x120 mm/util.c:722
 folio_evictable mm/internal.h:121 [inline]
 __pagevec_lru_add_fn+0x81/0x380 mm/swap.c:1043
 __pagevec_lru_add+0x1c3/0x270 mm/swap.c:1071
 folio_add_lru+0x11a/0x160 mm/swap.c:469
 filemap_add_folio+0xf8/0x150 mm/filemap.c:976
 page_cache_ra_unbounded+0x274/0x400 mm/readahead.c:221
 do_page_cache_ra mm/readahead.c:268 [inline]
 force_page_cache_ra+0x1e6/0x220 mm/readahead.c:300
 page_cache_sync_ra+0xcc/0xe0 mm/readahead.c:574
 page_cache_sync_readahead include/linux/pagemap.h:1056 [inline]
 filemap_get_pages mm/filemap.c:2511 [inline]
 filemap_read+0x3ed/0x1430 mm/filemap.c:2598
 blkdev_read_iter+0xcb/0x350 block/fops.c:610
 call_read_iter include/linux/fs.h:2080 [inline]
 new_sync_read fs/read_write.c:400 [inline]
 vfs_read+0x66c/0x750 fs/read_write.c:481
 ksys_read+0xd9/0x190 fs/read_write.c:619
 __do_sys_read fs/read_write.c:629 [inline]
 __se_sys_read fs/read_write.c:627 [inline]
 __x64_sys_read+0x3e/0x50 fs/read_write.c:627
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0xffff888103ea62a0 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 12825 Comm: udevd Not tainted 5.16.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================
I/O error, dev loop0, sector 131328 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
I/O error, dev loop1, sector 131328 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
I/O error, dev loop0, sector 131328 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
I/O error, dev loop5, sector 131328 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
I/O error, dev loop5, sector 131328 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
I/O error, dev loop0, sector 131328 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
I/O error, dev loop0, sector 131328 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
Buffer I/O error on dev loop0, logical block 16416, async page read
I/O error, dev loop0, sector 131328 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 0
Buffer I/O error on dev loop0, logical block 16416, async page read