REISERFS (device loop0): using 3.5.x disk format ================================================================== BUG: KASAN: out-of-bounds in leaf_paste_entries+0x963/0x13a0 fs/reiserfs/lbalance.c:1377 Read of size 18446744073709551584 at addr ffff88803c59efa4 by task syz-executor.0/20358 CPU: 1 PID: 20358 Comm: syz-executor.0 Not tainted 6.6.0-rc3-syzkaller-00055-g9ed22ae6be81 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0x163/0x540 mm/kasan/report.c:475 kasan_report+0x175/0x1b0 mm/kasan/report.c:588 kasan_check_range+0x27e/0x290 mm/kasan/generic.c:187 __asan_memmove+0x29/0x70 mm/kasan/shadow.c:94 leaf_paste_entries+0x963/0x13a0 fs/reiserfs/lbalance.c:1377 balance_leaf_finish_node_paste_dirent fs/reiserfs/do_balan.c:1295 [inline] balance_leaf_finish_node_paste fs/reiserfs/do_balan.c:1321 [inline] balance_leaf_finish_node fs/reiserfs/do_balan.c:1364 [inline] balance_leaf+0xbd22/0x12510 fs/reiserfs/do_balan.c:1452 do_balance+0x30d/0x8f0 fs/reiserfs/do_balan.c:1888 reiserfs_paste_into_item+0x732/0x870 fs/reiserfs/stree.c:2157 reiserfs_add_entry+0x9bc/0xd50 fs/reiserfs/namei.c:565 reiserfs_mkdir+0x6c0/0x8f0 fs/reiserfs/namei.c:860 xattr_mkdir fs/reiserfs/xattr.c:77 [inline] create_privroot fs/reiserfs/xattr.c:891 [inline] reiserfs_xattr_init+0x323/0x670 fs/reiserfs/xattr.c:1007 reiserfs_fill_super+0x2207/0x2620 fs/reiserfs/super.c:2175 mount_bdev+0x237/0x300 fs/super.c:1629 legacy_get_tree+0xef/0x190 fs/fs_context.c:638 vfs_get_tree+0x8c/0x280 fs/super.c:1750 do_new_mount+0x28f/0xae0 fs/namespace.c:3335 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861 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 RIP: 0033:0x7fc0c3a7e1ea Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fc0c485bee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fc0c485bf80 RCX: 00007fc0c3a7e1ea RDX: 0000000020000080 RSI: 0000000020000000 RDI: 00007fc0c485bf40 RBP: 0000000020000080 R08: 00007fc0c485bf80 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 00007fc0c485bf40 R14: 0000000000001115 R15: 0000000020000040 The buggy address belongs to the physical page: page:ffffea0000f16780 refcount:2 mapcount:0 mapping:ffff8881489ad8f8 index:0x213 pfn:0x3c59e memcg:ffff888025968000 aops:def_blk_aops ino:700000 flags: 0xfff00000008124(referenced|lru|active|private|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000008124 ffffea0001188308 ffff888025964030 ffff8881489ad8f8 raw: 0000000000000213 ffff88803a72b828 00000002ffffffff ffff888025968000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Movable, gfp_mask 0x148c48(GFP_NOFS|__GFP_NOFAIL|__GFP_COMP|__GFP_HARDWALL|__GFP_MOVABLE), pid 20358, tgid 20355 (syz-executor.0), ts 844834947219, free_ts 844815627273 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1536 prep_new_page mm/page_alloc.c:1543 [inline] get_page_from_freelist+0x31db/0x3360 mm/page_alloc.c:3170 __alloc_pages+0x255/0x670 mm/page_alloc.c:4426 folio_alloc+0x1e/0x60 mm/mempolicy.c:2308 filemap_alloc_folio+0xde/0x500 mm/filemap.c:976 __filemap_get_folio+0x431/0xbb0 mm/filemap.c:1936 grow_dev_page fs/buffer.c:1058 [inline] grow_buffers fs/buffer.c:1118 [inline] __getblk_slow fs/buffer.c:1145 [inline] __getblk_gfp+0x218/0x630 fs/buffer.c:1439 sb_getblk include/linux/buffer_head.h:344 [inline] search_by_key+0x464/0x4b60 fs/reiserfs/stree.c:672 reiserfs_read_locked_inode+0x240/0x2950 fs/reiserfs/inode.c:1547 reiserfs_fill_super+0x1363/0x2620 fs/reiserfs/super.c:2071 mount_bdev+0x237/0x300 fs/super.c:1629 legacy_get_tree+0xef/0x190 fs/fs_context.c:638 vfs_get_tree+0x8c/0x280 fs/super.c:1750 do_new_mount+0x28f/0xae0 fs/namespace.c:3335 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1136 [inline] free_unref_page_prepare+0x8c3/0x9f0 mm/page_alloc.c:2312 free_unref_page_list+0x596/0x830 mm/page_alloc.c:2451 release_pages+0x2113/0x23f0 mm/swap.c:1042 tlb_batch_pages_flush mm/mmu_gather.c:98 [inline] tlb_flush_mmu_free mm/mmu_gather.c:293 [inline] tlb_flush_mmu+0x34c/0x4e0 mm/mmu_gather.c:300 tlb_finish_mmu+0xd4/0x1f0 mm/mmu_gather.c:392 unmap_region+0x300/0x350 mm/mmap.c:2318 do_vmi_align_munmap+0x121e/0x1850 mm/mmap.c:2555 do_vmi_munmap+0x24d/0x2d0 mm/mmap.c:2623 __vm_munmap+0x230/0x450 mm/mmap.c:2908 __do_sys_munmap mm/mmap.c:2925 [inline] __se_sys_munmap mm/mmap.c:2922 [inline] __x64_sys_munmap+0x69/0x80 mm/mmap.c:2922 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 Memory state around the buggy address: ffff88803c59ee80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88803c59ef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88803c59ef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff88803c59f000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88803c59f080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================