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 18446744073709551365 at addr ffff888070318000 by task syz-executor241/3548 CPU: 0 PID: 3548 Comm: syz-executor241 Not tainted 6.1.53-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 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:483 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: 0033:0x7fbe296d8739 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:00007fff0e468308 EFLAGS: 00000246 ORIG_RAX: 000000000000004d RAX: ffffffffffffffda RBX: 00007fff0e4684d8 RCX: 00007fbe296d8739 RDX: 00007fbe296d8739 RSI: 0000000002007fff RDI: 0000000000000005 RBP: 00007fbe2974c610 R08: 00007fff0e4684d8 R09: 00007fff0e4684d8 R10: 00007fff0e4684d8 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fff0e4684c8 R14: 0000000000000001 R15: 0000000000000001 The buggy address belongs to the physical page: page:ffffea0001c0c600 refcount:1 mapcount:1 mapping:0000000000000000 index:0x20002 pfn:0x70318 memcg:ffff88813fe30000 anon flags: 0xfff800000a0014(uptodate|lru|mappedtodisk|swapbacked|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff800000a0014 ffffea0001e2c988 ffffea0001c0c6c8 ffff88807e8bf991 raw: 0000000000020002 0000000000000000 0000000100000000 ffff88813fe30000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Movable, gfp_mask 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 3548, tgid 3548 (syz-executor241), ts 59695867333, free_ts 16426398259 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] do_anonymous_page mm/memory.c:4142 [inline] handle_pte_fault mm/memory.c:4981 [inline] __handle_mm_fault mm/memory.c:5125 [inline] handle_mm_fault+0x2e85/0x5330 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: ffff888070317f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888070317f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888070318000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff888070318080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888070318100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================