REISERFS (device loop0): Using r5 hash to sort names REISERFS (device loop0): using 3.5.x disk format REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. ================================================================== BUG: KASAN: out-of-bounds in leaf_paste_in_buffer+0x1bc/0xab0 fs/reiserfs/lbalance.c:1017 Read of size 18446744073709551233 at addr ffff88807467e000 by task syz-executor400/4998 CPU: 1 PID: 4998 Comm: syz-executor400 Not tainted 6.4.0-syzkaller-01312-gb19edac5992d #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_in_buffer+0x1bc/0xab0 fs/reiserfs/lbalance.c:1017 balance_leaf_new_nodes_paste_whole fs/reiserfs/do_balan.c:1171 [inline] balance_leaf_new_nodes_paste fs/reiserfs/do_balan.c:1215 [inline] balance_leaf_new_nodes fs/reiserfs/do_balan.c:1246 [inline] balance_leaf+0x6680/0x12510 fs/reiserfs/do_balan.c:1450 do_balance+0x30d/0x8f0 fs/reiserfs/do_balan.c:1888 reiserfs_paste_into_item+0x732/0x870 fs/reiserfs/stree.c:2157 reiserfs_get_block+0x2250/0x5130 fs/reiserfs/inode.c:1069 __block_write_begin_int+0x548/0x1a50 fs/buffer.c:2063 reiserfs_write_begin+0x24d/0x520 fs/reiserfs/inode.c:2773 generic_cont_expand_simple+0x18b/0x2a0 fs/buffer.c:2424 reiserfs_setattr+0x57d/0x1140 fs/reiserfs/inode.c:3303 notify_change+0xc8b/0xf40 fs/attr.c:483 do_truncate+0x220/0x300 fs/open.c:66 do_sys_ftruncate+0x2f3/0x390 fs/open.c:194 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: 0033:0x7fc13f98c829 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007ffc93e56ec8 EFLAGS: 00000246 ORIG_RAX: 000000000000004d RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc13f98c829 RDX: 00007fc13f98c829 RSI: 0000000002007fff RDI: 0000000000000005 RBP: 00007fc13f94c0c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc13f94c150 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 The buggy address belongs to the physical page: page:ffffea0001d19f80 refcount:3 mapcount:0 mapping:ffff88801de1cd80 index:0x214 pfn:0x7467e memcg:ffff88814165c000 aops:def_blk_aops ino:700000 flags: 0xfff00000002020(active|private|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000002020 0000000000000000 dead000000000122 ffff88801de1cd80 raw: 0000000000000214 ffff888075eda9f8 00000003ffffffff ffff88814165c000 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 4998, tgid 4998 (syz-executor400), ts 67324525870, free_ts 66936403549 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1744 prep_new_page mm/page_alloc.c:1751 [inline] get_page_from_freelist+0x320e/0x3390 mm/page_alloc.c:3523 __alloc_pages+0x255/0x670 mm/page_alloc.c:4794 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:994 [inline] grow_buffers fs/buffer.c:1059 [inline] __getblk_slow fs/buffer.c:1086 [inline] __getblk_gfp+0x211/0xcc0 fs/buffer.c:1381 sb_getblk include/linux/buffer_head.h:365 [inline] get_empty_nodes+0x8c5/0xd70 fs/reiserfs/fix_node.c:890 ip_check_balance fs/reiserfs/fix_node.c:1381 [inline] check_balance fs/reiserfs/fix_node.c:2083 [inline] fix_nodes+0x1222/0x8ce0 fs/reiserfs/fix_node.c:2635 reiserfs_paste_into_item+0x654/0x870 fs/reiserfs/stree.c:2128 reiserfs_get_block+0x2250/0x5130 fs/reiserfs/inode.c:1069 __block_write_begin_int+0x548/0x1a50 fs/buffer.c:2063 reiserfs_write_begin+0x24d/0x520 fs/reiserfs/inode.c:2773 generic_cont_expand_simple+0x18b/0x2a0 fs/buffer.c:2424 reiserfs_setattr+0x57d/0x1140 fs/reiserfs/inode.c:3303 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1308 [inline] free_unref_page_prepare+0x903/0xa30 mm/page_alloc.c:2577 free_unref_page_list+0x596/0x830 mm/page_alloc.c:2718 release_pages+0x2193/0x2470 mm/swap.c:1042 tlb_batch_pages_flush mm/mmu_gather.c:97 [inline] tlb_flush_mmu_free mm/mmu_gather.c:292 [inline] tlb_flush_mmu+0x100/0x210 mm/mmu_gather.c:299 tlb_finish_mmu+0xd4/0x1f0 mm/mmu_gather.c:391 exit_mmap+0x3da/0xaf0 mm/mmap.c:3120 __mmput+0x115/0x3c0 kernel/fork.c:1351 exit_mm+0x227/0x310 kernel/exit.c:567 do_exit+0x612/0x2290 kernel/exit.c:861 do_group_exit+0x206/0x2c0 kernel/exit.c:1024 __do_sys_exit_group kernel/exit.c:1035 [inline] __se_sys_exit_group kernel/exit.c:1033 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1033 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: ffff88807467df00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88807467df80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88807467e000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff88807467e080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88807467e100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================