================================================================== BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x11b3/0x3a60 fs/ext4/xattr.c:1731 Read of size 18446744073709551600 at addr ffff888111798fb8 by task syz-executor308/288 CPU: 0 PID: 288 Comm: syz-executor308 Not tainted 5.10.226-syzkaller-00709-ge5e5644ea27f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack_lvl+0x1e2/0x24b lib/dump_stack.c:118 print_address_description+0x81/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:435 [inline] kasan_report+0x179/0x1c0 mm/kasan/report.c:452 kasan_check_range+0x293/0x2a0 mm/kasan/generic.c:189 memmove+0x2d/0x70 mm/kasan/shadow.c:54 ext4_xattr_set_entry+0x11b3/0x3a60 fs/ext4/xattr.c:1731 ext4_xattr_ibody_set+0x124/0x390 fs/ext4/xattr.c:2234 ext4_destroy_inline_data_nolock+0x1d3/0x5d0 fs/ext4/inline.c:447 ext4_convert_inline_data_nolock+0x3d8/0xd80 fs/ext4/inline.c:1240 ext4_try_add_inline_entry+0x805/0xb60 fs/ext4/inline.c:1349 ext4_add_entry+0x6c2/0x1280 fs/ext4/namei.c:2412 ext4_add_nondir+0x97/0x270 fs/ext4/namei.c:2784 ext4_create+0x348/0x530 fs/ext4/namei.c:2829 lookup_open fs/namei.c:3247 [inline] open_last_lookups fs/namei.c:3317 [inline] path_openat+0x1377/0x3000 fs/namei.c:3506 do_filp_open+0x21c/0x460 fs/namei.c:3536 do_sys_openat2+0x13f/0x710 fs/open.c:1217 do_sys_open fs/open.c:1233 [inline] __do_sys_openat fs/open.c:1249 [inline] __se_sys_openat fs/open.c:1244 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1244 do_syscall_64+0x34/0x70 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f684172b1a9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f68416e9218 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f68417b2608 RCX: 00007f684172b1a9 RDX: 000000000000275a RSI: 0000000020000080 RDI: 00000000ffffff9c RBP: 00007f68417b2600 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f684177f4cc R13: 0030656c69662f2e R14: 6f6f6c2f7665642f R15: 746174732e757063 The buggy address belongs to the page: page:ffffea000445e600 refcount:3 mapcount:1 mapping:ffff888100448f50 index:0x1 pfn:0x111798 aops:def_blk_aops ino:0 flags: 0x400000000002203e(referenced|uptodate|dirty|lru|active|private|mappedtodisk) raw: 400000000002203e ffffea0004217ec8 ffffea000421e0c8 ffff888100448f50 raw: 0000000000000001 ffff88811ca3fe70 0000000300000000 ffff888100146000 page dumped because: kasan: bad access detected page->mem_cgroup:ffff888100146000 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 288, ts 20950938917, free_ts 15269124046 set_page_owner include/linux/page_owner.h:35 [inline] post_alloc_hook mm/page_alloc.c:2456 [inline] prep_new_page+0x166/0x180 mm/page_alloc.c:2462 get_page_from_freelist+0x2d8c/0x2f30 mm/page_alloc.c:4254 __alloc_pages_nodemask+0x435/0xaf0 mm/page_alloc.c:5348 __alloc_pages include/linux/gfp.h:544 [inline] __alloc_pages_node include/linux/gfp.h:557 [inline] alloc_pages_node include/linux/gfp.h:571 [inline] alloc_pages include/linux/gfp.h:590 [inline] __page_cache_alloc include/linux/pagemap.h:290 [inline] pagecache_get_page+0x669/0x950 mm/filemap.c:1848 find_or_create_page include/linux/pagemap.h:402 [inline] grow_dev_page fs/buffer.c:976 [inline] grow_buffers fs/buffer.c:1045 [inline] __getblk_slow fs/buffer.c:1072 [inline] __getblk_gfp+0x221/0x7e0 fs/buffer.c:1370 sb_getblk include/linux/buffer_head.h:361 [inline] __ext4_get_inode_loc+0x4c2/0xbf0 fs/ext4/inode.c:4442 __ext4_get_inode_loc_noinmem fs/ext4/inode.c:4552 [inline] __ext4_iget+0x516/0x41f0 fs/ext4/inode.c:4777 ext4_fill_super+0x734e/0x9150 fs/ext4/super.c:4955 mount_bdev+0x262/0x370 fs/super.c:1440 ext4_mount+0x34/0x40 fs/ext4/super.c:6638 legacy_get_tree+0xf1/0x190 fs/fs_context.c:593 vfs_get_tree+0x88/0x290 fs/super.c:1570 do_new_mount+0x2ba/0xb30 fs/namespace.c:2910 path_mount+0x56f/0xcb0 fs/namespace.c:3240 do_mount fs/namespace.c:3253 [inline] __do_sys_mount fs/namespace.c:3461 [inline] __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3438 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3438 page last free stack trace: reset_page_owner include/linux/page_owner.h:28 [inline] free_pages_prepare mm/page_alloc.c:1349 [inline] free_pcp_prepare mm/page_alloc.c:1421 [inline] free_unref_page_prepare+0x2ae/0x2d0 mm/page_alloc.c:3336 free_unref_page_list+0x122/0xb20 mm/page_alloc.c:3443 release_pages+0xea0/0xef0 mm/swap.c:1103 free_pages_and_swap_cache+0x8a/0xa0 mm/swap_state.c:356 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+0x177/0x320 mm/mmu_gather.c:326 unmap_region+0x31c/0x370 mm/mmap.c:2810 __do_munmap+0x699/0x8c0 mm/mmap.c:3041 __vm_munmap mm/mmap.c:3064 [inline] __do_sys_munmap mm/mmap.c:3090 [inline] __se_sys_munmap+0x120/0x1a0 mm/mmap.c:3086 __x64_sys_munmap+0x5b/0x70 mm/mmap.c:3086 do_syscall_64+0x34/0x70 entry_SYSCALL_64_after_hwframe+0x61/0xcb Memory state around the buggy address: ffff888111798e80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888111798f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888111798f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff888111799000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888111799080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== EXT4-fs error (device loop0): ext4_xattr_ibody_find:2210: inode #12: comm syz-executor308: corrupted in-inode xattr EXT4-fs warning (device loop0):