EXT4-fs error (device loop5): ext4_update_inline_data:356: inode #15: comm syz.5.762: missing inline data xattr EXT4-fs error (device loop5): ext4_lookup:1834: inode #2: comm syz.5.762: deleted inode referenced: 12 ================================================================== BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x1326/0x3860 fs/ext4/xattr.c:1729 Read of size 18446744073709551600 at addr ffff888139add2b8 by task syz.5.762/3116 CPU: 0 PID: 3116 Comm: syz.5.762 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 Call Trace: __dump_stack+0x21/0x24 lib/dump_stack.c:77 dump_stack_lvl+0x1a7/0x208 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+0x249/0x2a0 mm/kasan/generic.c:189 memmove+0x2d/0x70 mm/kasan/shadow.c:54 ext4_xattr_set_entry+0x1326/0x3860 fs/ext4/xattr.c:1729 ext4_xattr_ibody_set+0x122/0x360 fs/ext4/xattr.c:2229 ext4_destroy_inline_data_nolock+0x20f/0x5e0 fs/ext4/inline.c:464 ext4_convert_inline_data_nolock+0x3bb/0xcd0 fs/ext4/inline.c:1258 ext4_convert_inline_data+0x4b9/0x5f0 fs/ext4/inline.c:2075 ext4_fallocate+0xf8/0x1a70 fs/ext4/extents.c:4768 vfs_fallocate+0x4b4/0x590 fs/open.c:310 ksys_fallocate fs/open.c:333 [inline] __do_sys_fallocate fs/open.c:341 [inline] __se_sys_fallocate fs/open.c:339 [inline] __x64_sys_fallocate+0xc0/0x110 fs/open.c:339 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f4131fc2e59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f4130a1d028 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f413223bfa0 RCX: 00007f4131fc2e59 RDX: 0000000000004100 RSI: 0000000000000003 RDI: 0000000000000006 RBP: 00007f4132058d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000008000c62 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f413223c038 R14: 00007f413223bfa0 R15: 00007fff65f47328 The buggy address belongs to the page: page:ffffea0004e6b740 refcount:3 mapcount:1 mapping:ffff88811074fe10 index:0x2 pfn:0x139add aops:def_blk_aops ino:0 flags: 0x400000000002203e(referenced|uptodate|dirty|lru|active|private|mappedtodisk) raw: 400000000002203e ffffea0004a03448 ffff888110991030 ffff88811074fe10 raw: 0000000000000002 ffff88813ca46e70 0000000300000000 ffff88812bc48000 page dumped because: kasan: bad access detected page->mem_cgroup:ffff88812bc48000 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 3116, ts 95440080579, free_ts 95439050525 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+0x223b/0x23d0 mm/page_alloc.c:4254 __alloc_pages_nodemask+0x290/0x620 mm/page_alloc.c:5384 __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+0x63e/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+0x467/0xc30 fs/ext4/inode.c:4456 __ext4_get_inode_loc_noinmem fs/ext4/inode.c:4566 [inline] __ext4_iget+0x495/0x44c0 fs/ext4/inode.c:4816 ext4_orphan_get+0x1e3/0x630 fs/ext4/ialloc.c:1401 ext4_orphan_cleanup+0x663/0xd30 fs/ext4/super.c:3081 ext4_fill_super+0x865f/0x8d70 fs/ext4/super.c:5079 mount_bdev+0x28b/0x3a0 fs/super.c:1442 ext4_mount+0x34/0x40 fs/ext4/super.c:6666 legacy_get_tree+0xed/0x190 fs/fs_context.c:593 vfs_get_tree+0x89/0x260 fs/super.c:1572 do_new_mount+0x25a/0xa20 fs/namespace.c:3006 path_mount+0x585/0xc90 fs/namespace.c:3336 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+0x129/0x9c0 mm/page_alloc.c:3443 release_pages+0xe52/0xea0 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+0x17e/0x310 mm/mmu_gather.c:326 unmap_region+0x355/0x3c0 mm/mmap.c:2811 __do_munmap+0x63c/0x850 mm/mmap.c:3041 __vm_munmap mm/mmap.c:3094 [inline] __do_sys_munmap mm/mmap.c:3120 [inline] __se_sys_munmap+0x130/0x1c0 mm/mmap.c:3116 __x64_sys_munmap+0x5b/0x70 mm/mmap.c:3116 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb Memory state around the buggy address: ffff888139add180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888139add200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888139add280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff888139add300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888139add380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ================================================================== EXT4-fs error (device loop5): ext4_validate_block_bitmap:438: comm syz.5.762: bg 0: block 465: padding at end of block bitmap is not set