syzbot

loop1: p2 start 151000334 is beyond EOD, truncated
loop1: p3 start 331777 is beyond EOD, truncated
loop1: p4 size 263168 extends beyond EOD, truncated
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BUG: KCSAN: data-race in delete_from_page_cache_batch / folio_mapping

write to 0xffffea00047ced18 of 8 bytes by task 3296 on cpu 0:
 page_cache_delete_batch mm/filemap.c:306 [inline]
 delete_from_page_cache_batch+0x2f6/0x6f0 mm/filemap.c:332
 truncate_inode_pages_range+0x1b8/0x690 mm/truncate.c:380
 truncate_inode_pages+0x24/0x30 mm/truncate.c:460
 kill_bdev block/bdev.c:91 [inline]
 blkdev_flush_mapping+0xa4/0x1a0 block/bdev.c:712
 blkdev_put_whole block/bdev.c:719 [inline]
 bdev_release+0x2bf/0x3d0 block/bdev.c:1144
 blkdev_release+0x15/0x20 block/fops.c:702
 __fput+0x29b/0x650 fs/file_table.c:468
 fput_close_sync+0x6e/0x120 fs/file_table.c:573
 __do_sys_close fs/open.c:1587 [inline]
 __se_sys_close fs/open.c:1572 [inline]
 __x64_sys_close+0x56/0xf0 fs/open.c:1572
 x64_sys_call+0x2738/0x2ff0 arch/x86/include/generated/asm/syscalls_64.h:4
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffffea00047ced18 of 8 bytes by task 6747 on cpu 1:
 folio_mapping+0xa1/0x120 mm/util.c:702
 folio_evictable mm/internal.h:499 [inline]
 lru_add+0x80/0x430 mm/swap.c:136
 folio_batch_move_lru+0x1c2/0x280 mm/swap.c:172
 lru_add_drain_cpu+0x77/0x250 mm/swap.c:648
 lru_add_drain+0x25/0x70 mm/swap.c:737
 populate_vma_page_range mm/gup.c:1882 [inline]
 __mm_populate+0x24b/0x3a0 mm/gup.c:1983
 mm_populate include/linux/mm.h:3367 [inline]
 vm_mmap_pgoff+0x232/0x2e0 mm/util.c:585
 ksys_mmap_pgoff+0x2d0/0x310 mm/mmap.c:604
 x64_sys_call+0x14a3/0x2ff0 arch/x86/include/generated/asm/syscalls_64.h:10
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0xffff8881005f0b60 -> 0x0000000000000000

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 6747 Comm: syz.1.1185 Not tainted syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
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