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 18446744073709551365 at addr ffff888070dfb000 by task syz-executor731/3507 CPU: 0 PID: 3507 Comm: syz-executor731 Not tainted 6.1.45-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 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_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+0x73b/0x880 fs/reiserfs/stree.c:2159 reiserfs_get_block+0x2259/0x5150 fs/reiserfs/inode.c:1069 __block_write_begin_int+0x544/0x1a30 fs/buffer.c:1991 reiserfs_write_begin+0x249/0x510 fs/reiserfs/inode.c:2775 generic_cont_expand_simple+0x187/0x2a0 fs/buffer.c:2347 reiserfs_setattr+0x606/0x11c0 fs/reiserfs/inode.c:3305 notify_change+0xdcd/0x1080 fs/attr.c:482 do_truncate+0x21c/0x300 fs/open.c:65 do_sys_ftruncate+0x2e2/0x380 fs/open.c:193 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: 0033:0x7fc737348639 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:00007ffdebdfdd48 EFLAGS: 00000246 ORIG_RAX: 000000000000004d RAX: ffffffffffffffda RBX: 00007ffdebdfdf18 RCX: 00007fc737348639 RDX: 00007fc7373839f3 RSI: 0000000002007fff RDI: 0000000000000004 RBP: 00007fc7373bc610 R08: 0000000000000000 R09: 00007ffdebdfdf18 R10: 00000000000010f1 R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffdebdfdf08 R14: 0000000000000001 R15: 0000000000000001 The buggy address belongs to the physical page: page:ffffea0001c37ec0 refcount:1 mapcount:1 mapping:0000000000000000 index:0x559985620 pfn:0x70dfb memcg:ffff88813fe40000 anon flags: 0xfff800000a0014(uptodate|lru|mappedtodisk|swapbacked|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff800000a0014 ffffea0001c52e48 ffffea0001c37f08 ffff88807836d001 raw: 0000000559985620 0000000000000000 0000000100000000 ffff88813fe40000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Movable, gfp_mask 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 3509, tgid 3509 (udevd), ts 52916130952, free_ts 11458366825 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2533 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+0xf/0x30 mm/page_alloc.c:5591 vma_alloc_folio+0x486/0x990 mm/mempolicy.c:2241 alloc_page_vma include/linux/gfp.h:284 [inline] wp_page_copy+0x292/0x17d0 mm/memory.c:3124 handle_pte_fault mm/memory.c:5001 [inline] __handle_mm_fault mm/memory.c:5125 [inline] handle_mm_fault+0x2522/0x5330 mm/memory.c:5246 do_user_addr_fault arch/x86/mm/fault.c:1380 [inline] handle_page_fault arch/x86/mm/fault.c:1471 [inline] exc_page_fault+0x26f/0x660 arch/x86/mm/fault.c:1527 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:1460 [inline] free_pcp_prepare mm/page_alloc.c:1510 [inline] free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3388 free_unref_page+0x98/0x570 mm/page_alloc.c:3484 free_contig_range+0x9a/0x150 mm/page_alloc.c:9519 destroy_args+0xfe/0x997 mm/debug_vm_pgtable.c:1031 debug_vm_pgtable+0x416/0x46b mm/debug_vm_pgtable.c:1354 do_one_initcall+0x265/0x8f0 init/main.c:1292 do_initcall_level+0x157/0x207 init/main.c:1365 do_initcalls+0x49/0x86 init/main.c:1381 kernel_init_freeable+0x473/0x61f init/main.c:1620 kernel_init+0x19/0x290 init/main.c:1508 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Memory state around the buggy address: ffff888070dfaf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888070dfaf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888070dfb000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff888070dfb080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888070dfb100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================