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

write to 0xffffea0004f0d998 of 8 bytes by task 14058 on cpu 1:
 page_cache_delete+0x33e/0x390 mm/filemap.c:143
 __filemap_remove_folio+0x3b/0xf0 mm/filemap.c:223
 filemap_remove_folio+0x69/0x120 mm/filemap.c:255
 truncate_inode_folio+0x204/0x210 mm/truncate.c:196
 truncate_inode_pages_range+0x832/0xae0 mm/truncate.c:426
 truncate_inode_pages+0x20/0x30 mm/truncate.c:452
 kill_bdev block/bdev.c:75 [inline]
 set_blocksize+0x24e/0x270 block/bdev.c:151
 sb_set_blocksize block/bdev.c:160 [inline]
 sb_min_blocksize+0x92/0x110 block/bdev.c:176
 __ext4_fill_super fs/ext4/super.c:4346 [inline]
 ext4_fill_super+0x3b7/0x5010 fs/ext4/super.c:5517
 get_tree_bdev+0x2b4/0x3b0 fs/super.c:1323
 ext4_get_tree+0x18/0x20 fs/ext4/super.c:5547
 vfs_get_tree+0x49/0x190 fs/super.c:1530
 do_new_mount+0x200/0x650 fs/namespace.c:3040
 path_mount+0x4ad/0xbb0 fs/namespace.c:3370
 do_mount fs/namespace.c:3383 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount+0x281/0x2d0 fs/namespace.c:3568
 __x64_sys_mount+0x63/0x70 fs/namespace.c:3568
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffffea0004f0d998 of 8 bytes by task 1916 on cpu 0:
 folio_mapping+0x8e/0x110 mm/util.c:806
 folio_evictable mm/internal.h:136 [inline]
 lru_add_fn+0x12e/0x520 mm/swap.c:210
 folio_batch_move_lru+0x1e1/0x2a0 mm/swap.c:246
 folio_batch_add_and_move mm/swap.c:263 [inline]
 folio_add_lru+0xf1/0x140 mm/swap.c:490
 filemap_add_folio+0xf8/0x150 mm/filemap.c:948
 page_cache_ra_unbounded+0x19e/0x2e0 mm/readahead.c:245
 do_page_cache_ra mm/readahead.c:293 [inline]
 force_page_cache_ra+0x1c6/0x200 mm/readahead.c:324
 page_cache_sync_ra+0xc8/0xf0 mm/readahead.c:695
 page_cache_sync_readahead include/linux/pagemap.h:1215 [inline]
 filemap_get_pages mm/filemap.c:2566 [inline]
 filemap_read+0x3ef/0x1430 mm/filemap.c:2660
 blkdev_read_iter+0x2c6/0x370 block/fops.c:598
 call_read_iter include/linux/fs.h:2181 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x3a5/0x560 fs/read_write.c:470
 ksys_read+0xe8/0x1a0 fs/read_write.c:607
 __do_sys_read fs/read_write.c:617 [inline]
 __se_sys_read fs/read_write.c:615 [inline]
 __x64_sys_read+0x3e/0x50 fs/read_write.c:615
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0xffff8881023c2b88 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 1916 Comm: udevd Not tainted 6.0.0-rc3-syzkaller-00007-gdcf8e5633e2e-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
==================================================================
Buffer I/O error on dev loop4, logical block 0, async page read
Buffer I/O error on dev loop4, logical block 0, async page read
 loop5: unable to read partition table
I/O error, dev loop5, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
I/O error, dev loop5, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
I/O error, dev loop5, sector 264064 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2
Buffer I/O error on dev loop5, logical block 0, async page read
Buffer I/O error on dev loop5, logical block 0, async page read
Buffer I/O error on dev loop1, logical block 0, async page read
Buffer I/O error on dev loop1, logical block 0, async page read
Buffer I/O error on dev loop1, logical block 2, async page read
 loop1: unable to read partition table
 loop2: unable to read partition table
 loop2: unable to read partition table
 loop0: unable to read partition table
I/O error, dev loop5, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2
I/O error, dev loop5, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 2