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

write to 0xffffea0004de57d8 of 8 bytes by task 17350 on cpu 1:
 page_cache_delete_batch mm/filemap.c:318 [inline]
 delete_from_page_cache_batch+0x33c/0x6e0 mm/filemap.c:348
 truncate_inode_pages_range+0x1c4/0xb00 mm/truncate.c:326
 truncate_inode_pages mm/truncate.c:425 [inline]
 truncate_pagecache+0x4f/0x70 mm/truncate.c:735
 ext4_setattr+0xa5f/0xf20 fs/ext4/inode.c:5457
 notify_change+0x8a3/0xac0 fs/attr.c:410
 do_truncate+0xf7/0x140 fs/open.c:64
 handle_truncate fs/namei.c:3082 [inline]
 do_open fs/namei.c:3430 [inline]
 path_openat+0x192c/0x1eb0 fs/namei.c:3559
 do_filp_open+0x105/0x220 fs/namei.c:3586
 do_sys_openat2+0xb5/0x2b0 fs/open.c:1200
 do_sys_open fs/open.c:1216 [inline]
 __do_sys_creat fs/open.c:1292 [inline]
 __se_sys_creat fs/open.c:1286 [inline]
 __x64_sys_creat+0x62/0x80 fs/open.c:1286
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffffea0004de57d8 of 8 bytes by task 17349 on cpu 0:
 folio_mapping+0x92/0x120 mm/util.c:722
 page_mapping+0x37/0x50 mm/folio-compat.c:13
 page_evictable mm/internal.h:103 [inline]
 move_pages_to_lru+0x13d/0x7c0 mm/vmscan.c:2181
 shrink_inactive_list+0x38f/0x6e0 mm/vmscan.c:2300
 shrink_list mm/vmscan.c:2524 [inline]
 shrink_lruvec+0x3c9/0x710 mm/vmscan.c:2843
 shrink_node_memcgs+0x23e/0x410 mm/vmscan.c:3032
 shrink_node+0x8f6/0x1190 mm/vmscan.c:3155
 shrink_zones+0x2af/0x490 mm/vmscan.c:3358
 do_try_to_free_pages+0x193/0x6c0 mm/vmscan.c:3413
 try_to_free_mem_cgroup_pages+0x1cb/0x420 mm/vmscan.c:3727
 reclaim_high mm/memcontrol.c:2301 [inline]
 mem_cgroup_handle_over_high+0x15b/0x480 mm/memcontrol.c:2485
 tracehook_notify_resume include/linux/tracehook.h:198 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:175 [inline]
 exit_to_user_mode_prepare+0x139/0x190 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+0x50/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0xffff888104a87440 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 17349 Comm: syz-executor.0 Tainted: G        W         5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================