==================================================================
BUG: KCSAN: data-race in delete_from_page_cache_batch / page_mapping

read to 0xffffea00026c1298 of 8 bytes by task 18859 on cpu 0:
 page_mapping+0x185/0x2a0 mm/util.c:675
 page_evictable+0x3a/0x110 mm/vmscan.c:4313
 __pagevec_lru_add_fn+0xe1/0x810 mm/swap.c:961
 pagevec_lru_move_fn+0xfe/0x180 mm/swap.c:211
 __pagevec_lru_add mm/swap.c:985 [inline]
 lru_add_drain_cpu+0x178/0x2e0 mm/swap.c:599
 lru_add_drain+0x35/0x80 mm/swap.c:694
 exit_mmap+0x10b/0x300 mm/mmap.c:3135
 __mmput kernel/fork.c:1082 [inline]
 mmput+0xea/0x280 kernel/fork.c:1103
 exec_mmap fs/exec.c:1047 [inline]
 flush_old_exec+0x5ea/0xf60 fs/exec.c:1280
 load_elf_binary+0x61b/0x2ef0 fs/binfmt_elf.c:846
 search_binary_handler fs/exec.c:1658 [inline]
 search_binary_handler+0x127/0x420 fs/exec.c:1635
 exec_binprm fs/exec.c:1701 [inline]
 __do_execve_file.isra.0+0xb6a/0x1140 fs/exec.c:1821
 do_execveat_common fs/exec.c:1867 [inline]
 do_execve fs/exec.c:1884 [inline]
 __do_sys_execve fs/exec.c:1960 [inline]
 __se_sys_execve fs/exec.c:1955 [inline]
 __x64_sys_execve+0x62/0x80 fs/exec.c:1955
 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

write to 0xffffea00026c1298 of 8 bytes by task 18849 on cpu 1:
 page_cache_delete_batch mm/filemap.c:326 [inline]
 delete_from_page_cache_batch+0x674/0x790 mm/filemap.c:357
 truncate_inode_pages_range+0x593/0x1120 mm/truncate.c:366
 truncate_inode_pages+0x2e/0x40 mm/truncate.c:476
 kill_bdev+0x89/0xb0 fs/block_dev.c:86
 set_blocksize+0x1dd/0x210 fs/block_dev.c:136
 sb_set_blocksize+0x3d/0xc0 fs/block_dev.c:145
 sb_min_blocksize+0xa5/0xc0 fs/block_dev.c:161
 xfs_fc_fill_super+0xae/0xaf0 fs/xfs/xfs_super.c:1373
 get_tree_bdev+0x2b7/0x3f0 fs/super.c:1340
 xfs_fc_get_tree+0x26/0x40 fs/xfs/xfs_super.c:1550
 vfs_get_tree+0x56/0x1a0 fs/super.c:1545
 do_new_mount fs/namespace.c:2822 [inline]
 do_mount+0x1004/0x14f0 fs/namespace.c:3142
 ksys_mount+0xe8/0x160 fs/namespace.c:3351
 __do_sys_mount fs/namespace.c:3365 [inline]
 __se_sys_mount fs/namespace.c:3362 [inline]
 __x64_sys_mount+0x70/0x90 fs/namespace.c:3362
 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 18849 Comm: syz-executor.0 Not tainted 5.5.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================