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BUG: KCSAN: data-race in delete_from_page_cache_batch / folio_mapping

write to 0xffffea0004884ad8 of 8 bytes by task 22934 on cpu 1:
 page_cache_delete_batch mm/filemap.c:317 [inline]
 delete_from_page_cache_batch+0x309/0x710 mm/filemap.c:343
 truncate_inode_pages_range+0x1c5/0x6b0 mm/truncate.c:359
 truncate_inode_pages mm/truncate.c:439 [inline]
 truncate_inode_pages_final+0x55/0x60 mm/truncate.c:474
 ext4_evict_inode+0x174/0xdd0 fs/ext4/inode.c:193
 evict+0x1ae/0x420 fs/inode.c:667
 iput_final fs/inode.c:1741 [inline]
 iput+0x432/0x5c0 fs/inode.c:1767
 dentry_unlink_inode+0x230/0x240 fs/dcache.c:400
 __dentry_kill+0x188/0x4b0 fs/dcache.c:603
 dput+0x5c/0xd0 fs/dcache.c:845
 __fput+0x44c/0x660 fs/file_table.c:430
 ____fput+0x15/0x20 fs/file_table.c:450
 task_work_run+0x13a/0x1a0 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0x5fd/0x1740 kernel/exit.c:878
 do_group_exit+0x102/0x150 kernel/exit.c:1027
 get_signal+0xf2f/0x1080 kernel/signal.c:2911
 arch_do_signal_or_restart+0x95/0x4b0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x94/0x130 kernel/entry/common.c:225
 irqentry_exit+0x12/0x50 kernel/entry/common.c:328
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623

read to 0xffffea0004884ad8 of 8 bytes by task 22938 on cpu 0:
 folio_mapping+0x96/0x110 mm/util.c:799
 folio_evictable mm/internal.h:256 [inline]
 move_folios_to_lru+0x137/0x690 mm/vmscan.c:1808
 shrink_inactive_list mm/vmscan.c:1929 [inline]
 shrink_list mm/vmscan.c:2163 [inline]
 shrink_lruvec+0xbd8/0x1640 mm/vmscan.c:5687
 shrink_node_memcgs mm/vmscan.c:5873 [inline]
 shrink_node+0xa78/0x15a0 mm/vmscan.c:5908
 shrink_zones mm/vmscan.c:6152 [inline]
 do_try_to_free_pages+0x3cc/0xca0 mm/vmscan.c:6214
 try_to_free_mem_cgroup_pages+0x1eb/0x4e0 mm/vmscan.c:6529
 try_charge_memcg+0x279/0xd10 mm/memcontrol.c:2783
 obj_cgroup_charge_pages+0xbd/0x1d0 mm/memcontrol.c:3302
 __memcg_kmem_charge_page+0x9d/0x170 mm/memcontrol.c:3328
 __alloc_pages+0x1bc/0x360 mm/page_alloc.c:4592
 __alloc_pages_node include/linux/gfp.h:238 [inline]
 alloc_pages_node include/linux/gfp.h:261 [inline]
 bpf_ringbuf_area_alloc kernel/bpf/ringbuf.c:122 [inline]
 bpf_ringbuf_alloc+0xba/0x2f0 kernel/bpf/ringbuf.c:170
 ringbuf_map_alloc+0x16b/0x1d0 kernel/bpf/ringbuf.c:204
 map_create+0x83c/0xb90 kernel/bpf/syscall.c:1320
 __sys_bpf+0x667/0x7a0 kernel/bpf/syscall.c:5613
 __do_sys_bpf kernel/bpf/syscall.c:5738 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5736 [inline]
 __x64_sys_bpf+0x43/0x50 kernel/bpf/syscall.c:5736
 do_syscall_64+0xd3/0x1d0
 entry_SYSCALL_64_after_hwframe+0x6d/0x75

value changed: 0xffff888106a7d4e0 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 22938 Comm: syz-executor.4 Tainted: G        W          6.8.0-syzkaller-11064-g82affc97affb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
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