REISERFS (device loop0): Using r5 hash to sort names ================================================================== BUG: KASAN: out-of-bounds in leaf_paste_entries+0x95f/0x13a0 fs/reiserfs/lbalance.c:1377 Read of size 18446744073709551584 at addr ffff88808c082fa4 by task syz-executor.0/29720 CPU: 1 PID: 29720 Comm: syz-executor.0 Not tainted 6.1.23-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:395 kasan_report+0x136/0x160 mm/kasan/report.c:495 kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189 memmove+0x25/0x60 mm/kasan/shadow.c:54 leaf_paste_entries+0x95f/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+0xbd1e/0x12510 fs/reiserfs/do_balan.c:1452 do_balance+0x309/0x8f0 fs/reiserfs/do_balan.c:1888 reiserfs_paste_into_item+0x73b/0x880 fs/reiserfs/stree.c:2159 reiserfs_add_entry+0x9b8/0xd70 fs/reiserfs/namei.c:567 reiserfs_mkdir+0x6bc/0x8f0 fs/reiserfs/namei.c:862 xattr_mkdir fs/reiserfs/xattr.c:76 [inline] create_privroot fs/reiserfs/xattr.c:882 [inline] reiserfs_xattr_init+0x348/0x730 fs/reiserfs/xattr.c:1005 reiserfs_fill_super+0x2203/0x2620 fs/reiserfs/super.c:2175 mount_bdev+0x26d/0x3a0 fs/super.c:1423 legacy_get_tree+0xeb/0x180 fs/fs_context.c:610 vfs_get_tree+0x88/0x270 fs/super.c:1553 do_new_mount+0x28b/0xad0 fs/namespace.c:3040 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff90288d69a Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff90363df88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000000000000110d RCX: 00007ff90288d69a RDX: 0000000020001100 RSI: 00000000200001c0 RDI: 00007ff90363dfe0 RBP: 00007ff90363e020 R08: 00007ff90363e020 R09: 0000000000208088 R10: 0000000000208088 R11: 0000000000000202 R12: 0000000020001100 R13: 00000000200001c0 R14: 00007ff90363dfe0 R15: 0000000020000240 The buggy address belongs to the physical page: page:ffffea0002302080 refcount:3 mapcount:0 mapping:ffff88801e0175f8 index:0x213 pfn:0x8c082 memcg:ffff8880882c0000 aops:def_blk_aops ino:700000 flags: 0xfff18000002042(referenced|workingset|private|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff18000002042 0000000000000000 dead000000000122 ffff88801e0175f8 raw: 0000000000000213 ffff888092e45cb0 00000003ffffffff ffff8880882c0000 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 29720, tgid 29719 (syz-executor.0), ts 1980870999533, free_ts 1083200504197 prep_new_page mm/page_alloc.c:2540 [inline] get_page_from_freelist+0x32ed/0x3480 mm/page_alloc.c:4292 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5559 folio_alloc+0x1a/0x50 mm/mempolicy.c:2297 filemap_alloc_folio+0xda/0x4f0 mm/filemap.c:971 __filemap_get_folio+0x711/0xe30 mm/filemap.c:1965 pagecache_get_page+0x28/0x250 mm/folio-compat.c:110 find_or_create_page include/linux/pagemap.h:613 [inline] grow_dev_page fs/buffer.c:946 [inline] grow_buffers fs/buffer.c:1011 [inline] __getblk_slow fs/buffer.c:1038 [inline] __getblk_gfp+0x211/0xa20 fs/buffer.c:1333 sb_getblk include/linux/buffer_head.h:356 [inline] search_by_key+0x460/0x4b60 fs/reiserfs/stree.c:672 reiserfs_read_locked_inode+0x23c/0x2950 fs/reiserfs/inode.c:1549 reiserfs_fill_super+0x135f/0x2620 fs/reiserfs/super.c:2071 mount_bdev+0x26d/0x3a0 fs/super.c:1423 legacy_get_tree+0xeb/0x180 fs/fs_context.c:610 vfs_get_tree+0x88/0x270 fs/super.c:1553 do_new_mount+0x28b/0xad0 fs/namespace.c:3040 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 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:1460 [inline] free_pcp_prepare mm/page_alloc.c:1510 [inline] free_unref_page_prepare+0xf5e/0x1110 mm/page_alloc.c:3388 free_unref_page_list+0x107/0x810 mm/page_alloc.c:3530 release_pages+0x2836/0x2b40 mm/swap.c:1055 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline] tlb_flush_mmu_free mm/mmu_gather.c:254 [inline] tlb_flush_mmu+0xfc/0x210 mm/mmu_gather.c:261 tlb_finish_mmu+0xce/0x1f0 mm/mmu_gather.c:361 zap_page_range_single+0x470/0x530 mm/memory.c:1786 madvise_dontneed_single_vma mm/madvise.c:793 [inline] madvise_dontneed_free mm/madvise.c:886 [inline] madvise_vma_behavior mm/madvise.c:1025 [inline] madvise_walk_vmas mm/madvise.c:1250 [inline] do_madvise+0x21f9/0x43a0 mm/madvise.c:1429 __do_sys_madvise mm/madvise.c:1442 [inline] __se_sys_madvise mm/madvise.c:1440 [inline] __x64_sys_madvise+0xa1/0xb0 mm/madvise.c:1440 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff88808c082e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88808c082f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88808c082f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff88808c083000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88808c083080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================