REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop0): checking transaction log (loop0) REISERFS (device loop0): Using r5 hash to sort names 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 18446744073709551600 at addr ffff8880729a2f94 by task syz-executor142/4995 CPU: 0 PID: 4995 Comm: syz-executor142 Not tainted 6.4.0-rc7-syzkaller-00072-gdad9774deaf1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 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:351 [inline] print_report+0x163/0x540 mm/kasan/report.c:462 kasan_report+0x176/0x1b0 mm/kasan/report.c:572 kasan_check_range+0x283/0x290 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/0xd70 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:890 [inline] reiserfs_xattr_init+0x323/0x670 fs/reiserfs/xattr.c:1006 reiserfs_fill_super+0x2207/0x2620 fs/reiserfs/super.c:2175 mount_bdev+0x2d0/0x3f0 fs/super.c:1380 legacy_get_tree+0xef/0x190 fs/fs_context.c:610 vfs_get_tree+0x8c/0x270 fs/super.c:1510 do_new_mount+0x28f/0xae0 fs/namespace.c:3039 do_mount fs/namespace.c:3382 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3568 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: 0033:0x7f3518be6afa Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc33e1a3e8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f3518be6afa RDX: 0000000020001100 RSI: 0000000020000040 RDI: 00007ffc33e1a400 RBP: 00007ffc33e1a400 R08: 00007ffc33e1a440 R09: 00000000000010fb R10: 0000000000000080 R11: 0000000000000286 R12: 0000000000000004 R13: 00005555557a92c0 R14: 0000000000000080 R15: 00007ffc33e1a440 The buggy address belongs to the physical page: page:ffffea0001ca6880 refcount:3 mapcount:0 mapping:ffff88801a8a49e8 index:0x213 pfn:0x729a2 memcg:ffff888015a54000 aops:def_blk_aops ino:700000 flags: 0xfff00000002022(referenced|active|private|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000002022 0000000000000000 dead000000000122 ffff88801a8a49e8 raw: 0000000000000213 ffff8880752922b8 00000003ffffffff ffff888015a54000 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 4995, tgid 4995 (syz-executor142), ts 72427007575, free_ts 19620242175 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1731 prep_new_page mm/page_alloc.c:1738 [inline] get_page_from_freelist+0x321c/0x33a0 mm/page_alloc.c:3502 __alloc_pages+0x255/0x670 mm/page_alloc.c:4768 folio_alloc+0x1e/0x60 mm/mempolicy.c:2289 filemap_alloc_folio+0xde/0x500 mm/filemap.c:976 __filemap_get_folio+0x323/0xa00 mm/filemap.c:1971 pagecache_get_page+0x2e/0x220 mm/folio-compat.c:99 find_or_create_page include/linux/pagemap.h:635 [inline] grow_dev_page fs/buffer.c:995 [inline] grow_buffers fs/buffer.c:1060 [inline] __getblk_slow fs/buffer.c:1087 [inline] __getblk_gfp+0x211/0xcc0 fs/buffer.c:1382 sb_getblk include/linux/buffer_head.h:365 [inline] search_by_key+0x464/0x4b60 fs/reiserfs/stree.c:672 reiserfs_read_locked_inode+0x240/0x2950 fs/reiserfs/inode.c:1549 reiserfs_fill_super+0x1363/0x2620 fs/reiserfs/super.c:2071 mount_bdev+0x2d0/0x3f0 fs/super.c:1380 legacy_get_tree+0xef/0x190 fs/fs_context.c:610 vfs_get_tree+0x8c/0x270 fs/super.c:1510 do_new_mount+0x28f/0xae0 fs/namespace.c:3039 do_mount fs/namespace.c:3382 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3568 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1302 [inline] free_unref_page_prepare+0x903/0xa30 mm/page_alloc.c:2564 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2659 free_contig_range+0x9e/0x150 mm/page_alloc.c:6994 destroy_args+0x102/0x9a0 mm/debug_vm_pgtable.c:1023 debug_vm_pgtable+0x405/0x490 mm/debug_vm_pgtable.c:1403 do_one_initcall+0x23d/0x7d0 init/main.c:1246 do_initcall_level+0x157/0x210 init/main.c:1319 do_initcalls+0x3f/0x80 init/main.c:1335 kernel_init_freeable+0x43b/0x5d0 init/main.c:1571 kernel_init+0x1d/0x2a0 init/main.c:1462 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Memory state around the buggy address: ffff8880729a2e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff8880729a2f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8880729a2f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff8880729a3000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff8880729a3080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================