================================================================== BUG: KASAN: out-of-bounds in leaf_paste_in_buffer+0x1bc/0xab0 fs/reiserfs/lbalance.c:1017 Read of size 18446744073709551365 at addr ffff88800d563000 by task syz-executor359/5061 CPU: 0 PID: 5061 Comm: syz-executor359 Not tainted 6.6.0-syzkaller-15859-g89cdf9d55601 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 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+0x142/0x170 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_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:2158 reiserfs_get_block+0x2250/0x5130 fs/reiserfs/inode.c:1069 __block_write_begin_int+0x54d/0x1ac0 fs/buffer.c:2119 reiserfs_write_begin+0x24d/0x520 fs/reiserfs/inode.c:2767 generic_cont_expand_simple+0x18b/0x2a0 fs/buffer.c:2473 reiserfs_setattr+0x57d/0x1140 fs/reiserfs/inode.c:3298 notify_change+0xb99/0xe60 fs/attr.c:499 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:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7fe9d367a6f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffc89df268 EFLAGS: 00000246 ORIG_RAX: 000000000000004d RAX: ffffffffffffffda RBX: 00007fffc89df438 RCX: 00007fe9d367a6f9 RDX: 00007fe9d367a6f9 RSI: 0000000002007fff RDI: 0000000000000005 RBP: 00007fe9d36ee610 R08: 00007fffc89df438 R09: 00007fffc89df438 R10: 00007fffc89df438 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fffc89df428 R14: 0000000000000001 R15: 0000000000000001 The buggy address belongs to the physical page: page:ffffea00003558c0 refcount:1 mapcount:0 mapping:ffff88807c27b6d8 index:0x0 pfn:0xd563 memcg:ffff888141652000 aops:ext4_da_aops ino:621 dentry name:"libdbus-1.so.3.19.15" flags: 0xfff0000002012c(referenced|uptodate|lru|active|mappedtodisk|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff0000002012c ffffea0001fc6e48 ffffea00004ab308 ffff88807c27b6d8 raw: 0000000000000000 0000000000000000 00000001ffffffff ffff888141652000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Movable, gfp_mask 0x152c4a(GFP_NOFS|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL|__GFP_MOVABLE), pid 4712, tgid 4712 (dbus-uuidgen), ts 29728182018, free_ts 28251570074 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1537 prep_new_page mm/page_alloc.c:1544 [inline] get_page_from_freelist+0x339a/0x3530 mm/page_alloc.c:3312 __alloc_pages+0x255/0x670 mm/page_alloc.c:4568 alloc_pages_mpol+0x3de/0x640 mm/mempolicy.c:2133 alloc_pages mm/mempolicy.c:2204 [inline] folio_alloc+0x12a/0x330 mm/mempolicy.c:2211 filemap_alloc_folio+0xde/0x500 mm/filemap.c:974 page_cache_ra_unbounded+0x1f2/0x7c0 mm/readahead.c:247 page_cache_sync_readahead include/linux/pagemap.h:1266 [inline] filemap_get_pages+0x49c/0x2080 mm/filemap.c:2497 filemap_read+0x42b/0x10b0 mm/filemap.c:2593 __kernel_read+0x425/0x8b0 fs/read_write.c:428 integrity_kernel_read+0xb0/0xf0 security/integrity/iint.c:221 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:485 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline] ima_calc_file_hash+0xad1/0x1b30 security/integrity/ima/ima_crypto.c:573 ima_collect_measurement+0x554/0xb30 security/integrity/ima/ima_api.c:290 process_measurement+0x1373/0x21c0 security/integrity/ima/ima_main.c:359 ima_file_check+0xf1/0x170 security/integrity/ima/ima_main.c:557 do_open fs/namei.c:3624 [inline] path_openat+0x2893/0x3280 fs/namei.c:3779 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1137 [inline] free_unref_page_prepare+0x92a/0xa50 mm/page_alloc.c:2347 free_unref_page_list+0x596/0x830 mm/page_alloc.c:2533 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 exit_mmap+0x4d3/0xc50 mm/mmap.c:3321 __mmput+0x115/0x3c0 kernel/fork.c:1349 exit_mm+0x21f/0x300 kernel/exit.c:567 do_exit+0x9b7/0x2750 kernel/exit.c:858 do_group_exit+0x206/0x2c0 kernel/exit.c:1021 __do_sys_exit_group kernel/exit.c:1032 [inline] __se_sys_exit_group kernel/exit.c:1030 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1030 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b Memory state around the buggy address: ffff88800d562f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88800d562f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88800d563000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff88800d563080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88800d563100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================