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 ffff88806872f000 by task syz-executor.0/4565 CPU: 1 PID: 4565 Comm: syz-executor.0 Not tainted 5.15.175-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 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_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+0x226a/0x5390 fs/reiserfs/inode.c:1077 __block_write_begin_int+0x60b/0x1650 fs/buffer.c:2012 reiserfs_write_begin+0x346/0x810 fs/reiserfs/inode.c:2790 generic_cont_expand_simple+0x144/0x230 fs/buffer.c:2362 reiserfs_setattr+0x3ff/0xf90 fs/reiserfs/inode.c:3319 notify_change+0xc6d/0xf50 fs/attr.c:505 do_truncate+0x21c/0x300 fs/open.c:65 do_sys_ftruncate+0x2eb/0x390 fs/open.c:193 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fa5e2681b29 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa5e1a030c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004d RAX: ffffffffffffffda RBX: 00007fa5e27a0f80 RCX: 00007fa5e2681b29 RDX: 0000000000000000 RSI: 0000000002007fff RDI: 0000000000000005 RBP: 00007fa5e26cd47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fa5e27a0f80 R15: 00007fff4427b5d8 The buggy address belongs to the page: page:ffffea0001a1cbc0 refcount:2 mapcount:1 mapping:0000000000000000 index:0x7fa5e279d pfn:0x6872f memcg:ffff88807ef94000 anon flags: 0xfff00000080004(uptodate|swapbacked|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000080004 0000000000000000 dead000000000122 ffff8880766ec331 raw: 00000007fa5e279d 0000000000000000 0000000200000000 ffff88807ef94000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Movable, gfp_mask 0x1100cca(GFP_HIGHUSER_MOVABLE), pid 4564, ts 89387751888, free_ts 20194106332 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x3b78/0x3d40 mm/page_alloc.c:4192 __alloc_pages+0x272/0x700 mm/page_alloc.c:5465 alloc_pages_vma+0x39a/0x800 mm/mempolicy.c:2146 wp_page_copy+0x24e/0x2070 mm/memory.c:3054 handle_pte_fault mm/memory.c:4666 [inline] __handle_mm_fault mm/memory.c:4783 [inline] handle_mm_fault+0x2a3d/0x5960 mm/memory.c:4881 do_user_addr_fault arch/x86/mm/fault.c:1357 [inline] handle_page_fault arch/x86/mm/fault.c:1445 [inline] exc_page_fault+0x271/0x700 arch/x86/mm/fault.c:1501 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606 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+0x95/0x2d0 mm/page_alloc.c:3396 free_contig_range+0x95/0xf0 mm/page_alloc.c:9384 destroy_args+0xfe/0x980 mm/debug_vm_pgtable.c:1018 debug_vm_pgtable+0x40d/0x470 mm/debug_vm_pgtable.c:1331 do_one_initcall+0x22b/0x7a0 init/main.c:1302 do_initcall_level+0x157/0x210 init/main.c:1375 do_initcalls+0x49/0x90 init/main.c:1391 kernel_init_freeable+0x425/0x5c0 init/main.c:1615 kernel_init+0x19/0x290 init/main.c:1506 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Memory state around the buggy address: ffff88806872ef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88806872ef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88806872f000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff88806872f080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88806872f100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================