================================================================================ 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: 6739 Comm: syz-executor308 Not tainted 6.7.0-rc4-syzkaller-00020-gd46efae31672 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240 __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+0xfc/0x148 lib/ubsan.c:348 folio_batch_add include/linux/pagevec.h:74 [inline] find_lock_entries+0x8c8/0xd1c mm/filemap.c:2074 truncate_inode_pages_range+0x1b8/0xf34 mm/truncate.c:363 truncate_inode_pages mm/truncate.c:448 [inline] truncate_inode_pages_final+0x90/0xc0 mm/truncate.c:483 ntfs_evict_inode+0x20/0x48 fs/ntfs3/inode.c:1798 evict+0x260/0x68c fs/inode.c:666 iput_final fs/inode.c:1777 [inline] iput+0x734/0x818 fs/inode.c:1803 ntfs_fill_super+0x3270/0x3acc fs/ntfs3/super.c:1464 get_tree_bdev+0x33c/0x4a8 fs/super.c:1598 ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1685 vfs_get_tree+0x90/0x288 fs/super.c:1771 do_new_mount+0x25c/0x8c8 fs/namespace.c:3337 path_mount+0x590/0xe04 fs/namespace.c:3664 do_mount fs/namespace.c:3677 [inline] __do_sys_mount fs/namespace.c:3886 [inline] __se_sys_mount fs/namespace.c:3863 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3863 __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+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 ================================================================================