REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop0): checking transaction log (loop0) REISERFS (device loop0): Using r5 hash to sort names reiserfs: enabling write barrier flush mode ================================================================== BUG: KASAN: out-of-bounds in leaf_paste_entries+0x73c/0x10c0 fs/reiserfs/lbalance.c:1377 Read of size 18446744073709551584 at addr ffff88806ea83fa4 by task syz-executor.0/4570 CPU: 1 PID: 4570 Comm: syz-executor.0 Not tainted 5.15.185-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106 print_address_description+0x60/0x2d0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0xdf/0x130 mm/kasan/report.c:451 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x27b/0x290 mm/kasan/generic.c:189 memmove+0x25/0x60 mm/kasan/shadow.c:54 leaf_paste_entries+0x73c/0x10c0 fs/reiserfs/lbalance.c:1377 balance_leaf_finish_node_paste_dirent fs/reiserfs/do_balan.c:1295 [inline] balance_leaf_finish_node_paste fs/reiserfs/do_balan.c:1321 [inline] balance_leaf_finish_node fs/reiserfs/do_balan.c:1364 [inline] balance_leaf+0xacec/0x10e60 fs/reiserfs/do_balan.c:1452 do_balance+0x2fa/0x930 fs/reiserfs/do_balan.c:1888 reiserfs_paste_into_item+0x69b/0x7e0 fs/reiserfs/stree.c:2159 reiserfs_add_entry+0x975/0xd40 fs/reiserfs/namei.c:567 reiserfs_mkdir+0x68f/0x970 fs/reiserfs/namei.c:862 xattr_mkdir fs/reiserfs/xattr.c:76 [inline] create_privroot fs/reiserfs/xattr.c:889 [inline] reiserfs_xattr_init+0x331/0x720 fs/reiserfs/xattr.c:1012 reiserfs_remount+0xf53/0x1480 fs/reiserfs/super.c:1588 reconfigure_super+0x219/0x880 fs/super.c:938 do_remount fs/namespace.c:2666 [inline] path_mount+0xd3e/0x1020 fs/namespace.c:3332 do_mount fs/namespace.c:3353 [inline] __do_sys_mount fs/namespace.c:3561 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3538 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fcb8fd0c1ea Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fcb8f08bee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fcb8f08bf80 RCX: 00007fcb8fd0c1ea RDX: 00000000200000c0 RSI: 0000000020000100 RDI: 0000000000000000 RBP: 00000000200000c0 R08: 00007fcb8f08bf80 R09: 0000000001a484bc R10: 0000000001a484bc R11: 0000000000000246 R12: 0000000020000100 R13: 00007fcb8f08bf40 R14: 0000000000000000 R15: 0000000020000d80 The buggy address belongs to the page: page:ffffea0001baa0c0 refcount:2 mapcount:0 mapping:ffff88801fc2daf0 index:0x213 pfn:0x6ea83 memcg:ffff8880197c0000 aops:def_blk_aops ino:700000 flags: 0xfff00000002032(referenced|lru|active|private|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000002032 ffffea0001ba6908 ffffea0001bab048 ffff88801fc2daf0 raw: 0000000000000213 ffff88807466c910 00000002ffffffff ffff8880197c0000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Movable, gfp_mask 0x108c48(GFP_NOFS|__GFP_NOFAIL|__GFP_HARDWALL|__GFP_MOVABLE), pid 4570, ts 88766390581, free_ts 88762073615 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x1b77/0x1c60 mm/page_alloc.c:4192 __alloc_pages+0x1e1/0x470 mm/page_alloc.c:5474 __page_cache_alloc+0xd2/0x3f0 mm/filemap.c:1022 pagecache_get_page+0x986/0xef0 mm/filemap.c:1940 find_or_create_page include/linux/pagemap.h:420 [inline] grow_dev_page fs/buffer.c:949 [inline] grow_buffers fs/buffer.c:1014 [inline] __getblk_slow fs/buffer.c:1041 [inline] __getblk_gfp+0x249/0xb70 fs/buffer.c:1336 sb_getblk include/linux/buffer_head.h:361 [inline] search_by_key+0x424/0x4390 fs/reiserfs/stree.c:672 reiserfs_read_locked_inode+0x154/0x2620 fs/reiserfs/inode.c:1557 reiserfs_fill_super+0x124b/0x23e0 fs/reiserfs/super.c:2075 mount_bdev+0x287/0x3c0 fs/super.c:1400 legacy_get_tree+0xe6/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x24a/0xa40 fs/namespace.c:3010 do_mount fs/namespace.c:3353 [inline] __do_sys_mount fs/namespace.c:3561 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3538 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x637/0x6c0 mm/page_alloc.c:3317 free_unref_page_list+0x122/0x7e0 mm/page_alloc.c:3433 release_pages+0x184b/0x1bb0 mm/swap.c:963 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline] tlb_flush_mmu_free mm/mmu_gather.c:240 [inline] tlb_flush_mmu mm/mmu_gather.c:247 [inline] tlb_finish_mmu+0x164/0x2e0 mm/mmu_gather.c:338 unmap_region+0x315/0x360 mm/mmap.c:2657 __do_munmap+0x9d3/0xdc0 mm/mmap.c:2887 __vm_munmap+0x137/0x230 mm/mmap.c:2940 __do_sys_munmap mm/mmap.c:2966 [inline] __se_sys_munmap mm/mmap.c:2962 [inline] __x64_sys_munmap+0x67/0x70 mm/mmap.c:2962 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Memory state around the buggy address: ffff88806ea83e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88806ea83f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88806ea83f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff88806ea84000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88806ea84080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 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