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 REISERFS (device loop0): Created .reiserfs_priv - reserved for xattr storage. ================================================================== BUG: KASAN: out-of-bounds in leaf_paste_in_buffer+0x1b8/0xab0 fs/reiserfs/lbalance.c:1017 Read of size 18446744073709551305 at addr ffff888064741000 by task syz-executor.0/5431 CPU: 0 PID: 5431 Comm: syz-executor.0 Not tainted 6.4.0-rc7-syzkaller-00226-ga92b7d26c743 #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+0x1e3/0x2d0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:351 [inline] print_report+0x15f/0x540 mm/kasan/report.c:462 kasan_report+0x172/0x1a0 mm/kasan/report.c:572 kasan_check_range+0x27f/0x290 mm/kasan/generic.c:187 __asan_memmove+0x25/0x60 mm/kasan/shadow.c:94 leaf_paste_in_buffer+0x1b8/0xab0 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+0x667c/0x12510 fs/reiserfs/do_balan.c:1450 do_balance+0x309/0x8f0 fs/reiserfs/do_balan.c:1888 reiserfs_paste_into_item+0x72e/0x870 fs/reiserfs/stree.c:2157 reiserfs_get_block+0x224c/0x5120 fs/reiserfs/inode.c:1069 __block_write_begin_int+0x544/0x1a30 fs/buffer.c:2064 reiserfs_write_begin+0x249/0x510 fs/reiserfs/inode.c:2773 generic_cont_expand_simple+0x187/0x2a0 fs/buffer.c:2425 reiserfs_setattr+0x579/0x1140 fs/reiserfs/inode.c:3303 notify_change+0xc87/0xf30 fs/attr.c:483 do_truncate+0x21c/0x300 fs/open.c:66 do_sys_ftruncate+0x2e0/0x380 fs/open.c:194 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: 0033:0x7f74fb68c389 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007f74fc368168 EFLAGS: 00000246 ORIG_RAX: 000000000000004d RAX: ffffffffffffffda RBX: 00007f74fb7abf80 RCX: 00007f74fb68c389 RDX: 0000000000000000 RSI: 0000000002007fff RDI: 0000000000000004 RBP: 00007f74fb6d7493 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff56dbf42f R14: 00007f74fc368300 R15: 0000000000022000 The buggy address belongs to the physical page: page:ffffea000191d040 refcount:1 mapcount:1 mapping:0000000000000000 index:0x1a2 pfn:0x64741 memcg:ffff888015a54000 anon flags: 0xfff800000a0014(uptodate|lru|mappedtodisk|swapbacked|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000000 ffffea00019be888 ffffea000191dbc8 0000000000000000 raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as freed page last allocated via order 0, migratetype Movable, gfp_mask 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 5451, tgid 5451 (rm), ts 84943332698, free_ts 84966630049 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1d2/0x1f0 mm/page_alloc.c:1731 prep_new_page mm/page_alloc.c:1738 [inline] get_page_from_freelist+0x31f8/0x3370 mm/page_alloc.c:3502 __alloc_pages+0x251/0x660 mm/page_alloc.c:4768 __folio_alloc+0xf/0x30 mm/page_alloc.c:4800 vma_alloc_folio+0x486/0x990 mm/mempolicy.c:2240 alloc_page_vma include/linux/gfp.h:284 [inline] do_cow_fault mm/memory.c:4549 [inline] do_fault mm/memory.c:4661 [inline] do_pte_missing mm/memory.c:3647 [inline] handle_pte_fault mm/memory.c:4947 [inline] __handle_mm_fault mm/memory.c:5089 [inline] handle_mm_fault+0x20a5/0x59e0 mm/memory.c:5243 do_user_addr_fault arch/x86/mm/fault.c:1440 [inline] handle_page_fault arch/x86/mm/fault.c:1534 [inline] exc_page_fault+0x78a/0x8c0 arch/x86/mm/fault.c:1590 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570 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+0x8ee/0xa10 mm/page_alloc.c:2564 free_unref_page_list+0x58e/0x830 mm/page_alloc.c:2705 release_pages+0x275c/0x2a70 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+0xfc/0x210 mm/mmu_gather.c:299 tlb_finish_mmu+0xd0/0x1f0 mm/mmu_gather.c:391 exit_mmap+0x3d6/0xac0 mm/mmap.c:3120 __mmput+0x115/0x3c0 kernel/fork.c:1351 exit_mm+0x223/0x300 kernel/exit.c:567 do_exit+0x60e/0x2280 kernel/exit.c:861 do_group_exit+0x202/0x2b0 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+0x3b/0x40 kernel/exit.c:1033 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: ffff888064740f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888064740f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888064741000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff888064741080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888064741100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================