syzbot

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UBSAN: array-index-out-of-bounds in ./include/linux/pagevec.h:74:2
index 255 is out of range for type 'struct folio *[15]'
CPU: 0 PID: 20567 Comm: syz-executor492 Tainted: G    B              6.8.0-rc5-syzkaller-g9abbc24128bc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 dump_stack+0x1c/0x28 lib/dump_stack.c:113
 ubsan_epilogue lib/ubsan.c:217 [inline]
 __ubsan_handle_out_of_bounds+0xf8/0x148 lib/ubsan.c:347
 folio_batch_add include/linux/pagevec.h:74 [inline]
 find_lock_entries+0x8c8/0xd1c mm/filemap.c:2075
 truncate_inode_pages_range+0x1b8/0xf34 mm/truncate.c:354
 truncate_inode_pages mm/truncate.c:439 [inline]
 truncate_inode_pages_final+0x90/0xc0 mm/truncate.c:474
 ntfs_evict_inode+0x20/0x48 fs/ntfs3/inode.c:1814
 evict+0x260/0x68c fs/inode.c:665
 iput_final fs/inode.c:1739 [inline]
 iput+0x734/0x818 fs/inode.c:1765
 ntfs_fill_super+0x3254/0x3a98 fs/ntfs3/super.c:1474
 get_tree_bdev+0x320/0x470 fs/super.c:1619
 ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1695
 vfs_get_tree+0x90/0x288 fs/super.c:1784
 do_new_mount+0x278/0x900 fs/namespace.c:3352
 path_mount+0x590/0xe04 fs/namespace.c:3679
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount fs/namespace.c:3875 [inline]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3875
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
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