REISERFS (device loop3): Using tea hash to sort names ================================================================== BUG: KASAN: out-of-bounds in leaf_paste_entries+0x95f/0x13a0 fs/reiserfs/lbalance.c:1377 Read of size 18446744073709551590 at addr ffff88802ddeefa4 by task syz-executor.3/1203 CPU: 0 PID: 1203 Comm: syz-executor.3 Not tainted 5.15.139-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description+0x63/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x16b/0x1c0 mm/kasan/report.c:451 kasan_check_range+0x27e/0x290 mm/kasan/generic.c:189 memmove+0x25/0x60 mm/kasan/shadow.c:54 leaf_paste_entries+0x95f/0x13a0 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+0xbd1e/0x12510 fs/reiserfs/do_balan.c:1452 do_balance+0x309/0x8f0 fs/reiserfs/do_balan.c:1888 reiserfs_paste_into_item+0x73b/0x880 fs/reiserfs/stree.c:2159 reiserfs_add_entry+0x9b8/0xd70 fs/reiserfs/namei.c:567 reiserfs_mkdir+0x6bc/0x8f0 fs/reiserfs/namei.c:862 xattr_mkdir fs/reiserfs/xattr.c:76 [inline] create_privroot fs/reiserfs/xattr.c:889 [inline] reiserfs_xattr_init+0x348/0x730 fs/reiserfs/xattr.c:1012 reiserfs_fill_super+0x226a/0x2690 fs/reiserfs/super.c:2179 mount_bdev+0x2c9/0x3f0 fs/super.c:1387 legacy_get_tree+0xeb/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1517 do_new_mount+0x28b/0xae0 fs/namespace.c:2994 do_mount fs/namespace.c:3337 [inline] __do_sys_mount fs/namespace.c:3545 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3522 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+0x61/0xcb RIP: 0033:0x7fa46ee331ea 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:00007fa46d3b2ee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fa46d3b2f80 RCX: 00007fa46ee331ea RDX: 0000000020001100 RSI: 0000000020001140 RDI: 00007fa46d3b2f40 RBP: 0000000020001100 R08: 00007fa46d3b2f80 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020001140 R13: 00007fa46d3b2f40 R14: 00000000000010ed R15: 0000000020000000 The buggy address belongs to the page: page:ffffea0000b77b80 refcount:2 mapcount:0 mapping:ffff888012039470 index:0x213 pfn:0x2ddee memcg:ffff88801fd5c000 aops:def_blk_aops ino:700003 flags: 0xfff00000002032(referenced|lru|active|private|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000002032 ffffea0000b77b48 ffff888077a91030 ffff888012039470 raw: 0000000000000213 ffff8880426c5d98 00000002ffffffff ffff88801fd5c000 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 1203, ts 2262581095584, free_ts 2259815363209 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x322a/0x33c0 mm/page_alloc.c:4159 __alloc_pages+0x272/0x700 mm/page_alloc.c:5421 __page_cache_alloc+0xd4/0x4a0 mm/filemap.c:1022 pagecache_get_page+0xa91/0x1010 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+0x22a/0xaf0 fs/buffer.c:1336 sb_getblk include/linux/buffer_head.h:361 [inline] search_by_key+0x46d/0x4730 fs/reiserfs/stree.c:672 reiserfs_read_locked_inode+0x23c/0x2950 fs/reiserfs/inode.c:1557 reiserfs_fill_super+0x11bf/0x2690 fs/reiserfs/super.c:2075 mount_bdev+0x2c9/0x3f0 fs/super.c:1387 legacy_get_tree+0xeb/0x180 fs/fs_context.c:611 vfs_get_tree+0x88/0x270 fs/super.c:1517 do_new_mount+0x28b/0xae0 fs/namespace.c:2994 do_mount fs/namespace.c:3337 [inline] __do_sys_mount fs/namespace.c:3545 [inline] __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3522 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+0x61/0xcb 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+0xc34/0xcf0 mm/page_alloc.c:3317 free_unref_page_list+0x1f7/0x8e0 mm/page_alloc.c:3433 shrink_page_list+0x6851/0x7540 mm/vmscan.c:1811 reclaim_pages+0x82d/0xbc0 mm/vmscan.c:2417 madvise_cold_or_pageout_pte_range+0x17fb/0x2090 mm/madvise.c:478 walk_pmd_range mm/pagewalk.c:128 [inline] walk_pud_range mm/pagewalk.c:205 [inline] walk_p4d_range mm/pagewalk.c:240 [inline] walk_pgd_range+0xb28/0x13d0 mm/pagewalk.c:277 __walk_page_range+0x137/0x5c0 mm/pagewalk.c:379 walk_page_range+0x4aa/0x680 mm/pagewalk.c:477 madvise_pageout_page_range mm/madvise.c:531 [inline] madvise_pageout mm/madvise.c:568 [inline] madvise_vma mm/madvise.c:998 [inline] do_madvise+0x1bb3/0x3470 mm/madvise.c:1207 __do_sys_madvise mm/madvise.c:1233 [inline] __se_sys_madvise mm/madvise.c:1231 [inline] __x64_sys_madvise+0xa1/0xb0 mm/madvise.c:1231 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+0x61/0xcb Memory state around the buggy address: ffff88802ddeee80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88802ddeef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88802ddeef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff88802ddef000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88802ddef080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================