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BUG: KCSAN: data-race in __percpu_counter_compare / percpu_counter_add_batch

read-write to 0xffff888100139b50 of 8 bytes by task 25160 on cpu 0:
 percpu_counter_add_batch+0xc9/0x140 lib/percpu_counter.c:96
 percpu_counter_add include/linux/percpu_counter.h:69 [inline]
 percpu_counter_sub include/linux/percpu_counter.h:247 [inline]
 shmem_inode_unacct_blocks mm/shmem.c:252 [inline]
 shmem_recalc_inode+0x148/0x1d0 mm/shmem.c:443
 shmem_undo_range+0x969/0x9a0 mm/shmem.c:1109
 shmem_truncate_range mm/shmem.c:1114 [inline]
 shmem_evict_inode+0x153/0x530 mm/shmem.c:1243
 evict+0x1aa/0x410 fs/inode.c:664
 iput_final fs/inode.c:1775 [inline]
 iput+0x42c/0x5b0 fs/inode.c:1801
 dentry_unlink_inode+0x22a/0x240 fs/dcache.c:401
 __dentry_kill+0x2db/0x4a0 fs/dcache.c:607
 dentry_kill+0x8d/0x1e0
 dput+0x118/0x1f0 fs/dcache.c:913
 __fput+0x464/0x5f0 fs/file_table.c:392
 __fput_sync+0x44/0x50 fs/file_table.c:465
 __do_sys_close fs/open.c:1572 [inline]
 __se_sys_close+0xfa/0x1a0 fs/open.c:1557
 __x64_sys_close+0x1f/0x30 fs/open.c:1557
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffff888100139b50 of 8 bytes by task 25177 on cpu 1:
 percpu_counter_read include/linux/percpu_counter.h:101 [inline]
 __percpu_counter_compare+0x2b/0x1d0 lib/percpu_counter.c:262
 percpu_counter_compare include/linux/percpu_counter.h:64 [inline]
 shmem_inode_acct_block+0xf6/0x220 mm/shmem.c:221
 shmem_alloc_and_acct_folio mm/shmem.c:1676 [inline]
 shmem_get_folio_gfp+0x4ad/0xc30 mm/shmem.c:2020
 shmem_get_folio mm/shmem.c:2143 [inline]
 shmem_write_begin+0xa6/0x210 mm/shmem.c:2688
 generic_perform_write+0x1c9/0x410 mm/filemap.c:3942
 shmem_file_write_iter+0xc8/0xe0 mm/shmem.c:2865
 call_write_iter include/linux/fs.h:1985 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x4ab/0x7d0 fs/read_write.c:584
 ksys_write+0xeb/0x1a0 fs/read_write.c:637
 __do_sys_write fs/read_write.c:649 [inline]
 __se_sys_write fs/read_write.c:646 [inline]
 __x64_sys_write+0x42/0x50 fs/read_write.c:646
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x000000000000103f -> 0x0000000000000040

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 25177 Comm: syz-executor.1 Not tainted 6.5.0-syzkaller-11812-g7733171926cc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
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