EXT4-fs error (device loop9): ext4_dirty_inode:6142: inode #15: comm syz.9.3233: mark_inode_dirty error ================================================================== BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x1339/0x36c0 fs/ext4/xattr.c:1740 Read of size 18446744073709551576 at addr ffff8881410052d0 by task syz.9.3233/13283 CPU: 1 PID: 13283 Comm: syz.9.3233 Tainted: G W 5.10.238-syzkaller-00282-gd76d4cd0623a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: __dump_stack+0x21/0x24 lib/dump_stack.c:77 dump_stack_lvl+0x169/0x1d8 lib/dump_stack.c:118 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:435 [inline] kasan_report+0xe2/0x130 mm/kasan/report.c:452 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x280/0x290 mm/kasan/generic.c:189 memmove+0x2d/0x70 mm/kasan/shadow.c:54 ext4_xattr_set_entry+0x1339/0x36c0 fs/ext4/xattr.c:1740 ext4_xattr_ibody_set+0x122/0x360 fs/ext4/xattr.c:2243 ext4_xattr_move_to_block fs/ext4/xattr.c:2629 [inline] ext4_xattr_make_inode_space fs/ext4/xattr.c:2697 [inline] ext4_expand_extra_isize_ea+0x1169/0x1a10 fs/ext4/xattr.c:2789 __ext4_expand_extra_isize+0x2fe/0x3e0 fs/ext4/inode.c:5983 ext4_try_to_expand_extra_isize fs/ext4/inode.c:6026 [inline] __ext4_mark_inode_dirty+0x3cf/0x610 fs/ext4/inode.c:6103 ext4_setattr+0x120c/0x1760 fs/ext4/inode.c:5647 notify_change+0xab3/0xe40 fs/attr.c:410 do_truncate+0x186/0x210 fs/open.c:65 handle_truncate fs/namei.c:3054 [inline] do_open fs/namei.c:3395 [inline] path_openat+0x2aab/0x3160 fs/namei.c:3509 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217 do_sys_open fs/open.c:1233 [inline] __do_sys_creat fs/open.c:1309 [inline] __se_sys_creat fs/open.c:1303 [inline] __x64_sys_creat+0x8e/0xb0 fs/open.c:1303 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f6d075d7929 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6d05c40038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f6d077fefa0 RCX: 00007f6d075d7929 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 00002000000000c0 RBP: 00007f6d07659b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f6d077fefa0 R15: 00007ffd3637c2c8 The buggy address belongs to the page: page:ffffea0005040140 refcount:2 mapcount:0 mapping:ffff88810ff7b150 index:0x2 pfn:0x141005 aops:def_blk_aops ino:0 flags: 0x4000000000002036(referenced|uptodate|lru|active|private) raw: 4000000000002036 ffffea00051d9d88 ffffea0004c182c8 ffff88810ff7b150 raw: 0000000000000002 ffff88812ebcbf18 00000002ffffffff ffff888126b0e000 page dumped because: kasan: bad access detected page->mem_cgroup:ffff888126b0e000 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 13283, ts 759106096023, free_ts 759075154324 set_page_owner include/linux/page_owner.h:35 [inline] post_alloc_hook mm/page_alloc.c:2456 [inline] prep_new_page+0x179/0x180 mm/page_alloc.c:2462 get_page_from_freelist+0x2235/0x23d0 mm/page_alloc.c:4254 __alloc_pages_nodemask+0x268/0x5f0 mm/page_alloc.c:5357 __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+0x642/0x930 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+0x212/0x780 fs/buffer.c:1370 sb_getblk include/linux/buffer_head.h:361 [inline] __ext4_get_inode_loc+0x45a/0xc20 fs/ext4/inode.c:4443 ext4_get_inode_loc fs/ext4/inode.c:4569 [inline] ext4_reserve_inode_write+0x16f/0x2f0 fs/ext4/inode.c:5923 ext4_xattr_set_handle+0x4d7/0x12a0 fs/ext4/xattr.c:2352 ext4_initxattrs+0xa6/0x110 fs/ext4/xattr_security.c:43 security_inode_init_security+0x254/0x370 security/security.c:1033 ext4_init_security+0x34/0x40 fs/ext4/xattr_security.c:57 __ext4_new_inode+0x2b72/0x3580 fs/ext4/ialloc.c:1327 ext4_create+0x218/0x450 fs/ext4/namei.c:2823 lookup_open fs/namei.c:3247 [inline] open_last_lookups fs/namei.c:3317 [inline] path_openat+0x16e3/0x3160 fs/namei.c:3506 do_filp_open+0x1b3/0x3e0 fs/namei.c:3536 do_sys_openat2+0x14c/0x6d0 fs/open.c:1217 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+0x2b7/0x2d0 mm/page_alloc.c:3336 free_unref_page_list+0x12e/0x9b0 mm/page_alloc.c:3443 release_pages+0xe38/0xe80 mm/swap.c:1103 free_pages_and_swap_cache+0x86/0xa0 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+0x175/0x300 mm/mmu_gather.c:326 unmap_region+0x32c/0x380 mm/mmap.c:2799 __do_munmap+0x63c/0x850 mm/mmap.c:3029 __vm_munmap mm/mmap.c:3082 [inline] __do_sys_munmap mm/mmap.c:3108 [inline] __se_sys_munmap+0x127/0x1b0 mm/mmap.c:3104 __x64_sys_munmap+0x5b/0x70 mm/mmap.c:3104 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb Memory state around the buggy address: ffff888141005180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888141005200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888141005280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff888141005300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888141005380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== EXT4-fs error (device loop9): __ext4_get_inode_loc:4438: comm syz.9.3233: Invalid inode table block 0 in block_group 0 EXT4-fs warning (device loop9): ext4_xattr_set_entry:1753: inode #15: comm syz.9.3233: unable to update i_inline_off EXT4-fs warning (device loop9): ext4_expand_extra_isize_ea:2815: Unable to expand inode 15. Delete some EAs or run e2fsck. EXT4-fs error (device loop9): __ext4_get_inode_loc:4438: comm syz.9.3233: Invalid inode table block 0 in block_group 0 EXT4-fs error (device loop9) in ext4_setattr:5706: Corrupt filesystem