syzbot has found a reproducer for the following issue on: HEAD commit: 35e2132122ba Merge branch 'for-next/core' into for-kernelci git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=16924717a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=4f6a8d3c0bd07f11 dashboard link: https://syzkaller.appspot.com/bug?extid=e295147e14b474e4ad70 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16a2eeb0680000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12224553a80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/6808a9c4c8df/disk-35e21321.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/85a6cfc7b474/vmlinux-35e21321.xz kernel image: https://storage.googleapis.com/syzbot-assets/a3958fe16b1c/Image-35e21321.gz.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/b81535b17c61/mount_1.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+e295147e14b474e4ad70@xxxxxxxxxxxxxxxxxxxxxxxxx ================================================================================ 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: 1 PID: 12841 Comm: syz-executor402 Not tainted 6.5.0-rc7-syzkaller-g35e2132122ba #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 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+0x8fc/0xd84 mm/filemap.c:2089 truncate_inode_pages_range+0x1b0/0xf74 mm/truncate.c:364 truncate_inode_pages mm/truncate.c:449 [inline] truncate_inode_pages_final+0x90/0xc0 mm/truncate.c:484 ntfs_evict_inode+0x20/0x48 fs/ntfs3/inode.c:1790 evict+0x260/0x68c fs/inode.c:664 iput_final fs/inode.c:1788 [inline] iput+0x734/0x818 fs/inode.c:1814 ntfs_fill_super+0x3648/0x3f90 fs/ntfs3/super.c:1420 get_tree_bdev+0x378/0x570 fs/super.c:1318 ntfs_fs_get_tree+0x28/0x38 fs/ntfs3/super.c:1647 vfs_get_tree+0x90/0x274 fs/super.c:1519 do_new_mount+0x25c/0x8c8 fs/namespace.c:3335 path_mount+0x590/0xe04 fs/namespace.c:3662 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount fs/namespace.c:3861 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3861 __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+0x58/0x16c 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:591 ================================================================================ --- If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing.
