loop0: detected capacity change from 0 to 2048 EXT4-fs: Ignoring removed mblk_io_submit option EXT4-fs: Ignoring removed i_version option EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. team0: Port device vlan2 added loop0: detected capacity change from 2048 to 64 EXT4-fs error (device loop0): ext4_update_inline_data:362: inode #15: comm syz.0.0: missing inline data xattr ================================================================== BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x9c1/0x1e20 fs/ext4/xattr.c:1756 Read of size 18446744073709551600 at addr ffff8880423211b8 by task syz.0.0/5380 CPU: 0 UID: 0 PID: 5380 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0xca/0x240 mm/kasan/report.c:482 kasan_report+0x118/0x150 mm/kasan/report.c:595 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x2b0/0x2c0 mm/kasan/generic.c:200 __asan_memmove+0x29/0x70 mm/kasan/shadow.c:94 ext4_xattr_set_entry+0x9c1/0x1e20 fs/ext4/xattr.c:1756 ext4_xattr_ibody_set+0x254/0x6a0 fs/ext4/xattr.c:2268 ext4_destroy_inline_data_nolock+0x214/0x5b0 fs/ext4/inline.c:463 ext4_convert_inline_data_to_extent+0x540/0xdd0 fs/ext4/inline.c:613 ext4_write_begin+0x382/0x19a0 fs/ext4/inode.c:1302 ext4_da_write_begin+0x445/0xda0 fs/ext4/inode.c:3129 generic_perform_write+0x2c5/0x900 mm/filemap.c:4242 ext4_buffered_write_iter+0xce/0x3a0 fs/ext4/file.c:299 ext4_file_write_iter+0x298/0x1bc0 fs/ext4/file.c:-1 aio_write+0x535/0x7a0 fs/aio.c:1634 __io_submit_one fs/aio.c:-1 [inline] io_submit_one+0x78b/0x1310 fs/aio.c:2053 __do_sys_io_submit fs/aio.c:2112 [inline] __se_sys_io_submit+0x185/0x2f0 fs/aio.c:2082 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2fe0d8efc9 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:00007f2fe1bb6038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1 RAX: ffffffffffffffda RBX: 00007f2fe0fe5fa0 RCX: 00007f2fe0d8efc9 RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f2fe1b6c000 RBP: 00007f2fe0e11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f2fe0fe6038 R14: 00007f2fe0fe5fa0 R15: 00007ffd3aa19ef8 The buggy address belongs to the physical page: page: refcount:2 mapcount:0 mapping:ffff888032154d80 index:0x3 pfn:0x42321 memcg:ffff888030ae0000 aops:def_blk_aops ino:700000 dentry name(?):"" flags: 0x4fff58000004a3c(referenced|uptodate|dirty|lru|workingset|owner_2|private|node=1|zone=1|lastcpupid=0x7ff) raw: 04fff58000004a3c ffffea00010937c8 ffff888030af0240 ffff888032154d80 raw: 0000000000000003 ffff888043219488 00000002ffffffff ffff888030ae0000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x152c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 5356, tgid 5356 (udevd), ts 367378319542, free_ts 366978892055 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2416 alloc_frozen_pages_noprof mm/mempolicy.c:2487 [inline] alloc_pages_noprof+0xa9/0x190 mm/mempolicy.c:2507 folio_alloc_noprof+0x1e/0x30 mm/mempolicy.c:2517 filemap_alloc_folio_noprof+0xdf/0x470 mm/filemap.c:1020 ractl_alloc_folio mm/readahead.c:189 [inline] page_cache_ra_unbounded+0x35d/0x9a0 mm/readahead.c:275 do_page_cache_ra mm/readahead.c:332 [inline] force_page_cache_ra mm/readahead.c:361 [inline] page_cache_sync_ra+0x443/0xc60 mm/readahead.c:579 filemap_get_pages+0x468/0x1de0 mm/filemap.c:2638 filemap_read+0x3f6/0x11a0 mm/filemap.c:2748 blkdev_read_iter+0x30a/0x440 block/fops.c:859 new_sync_read fs/read_write.c:491 [inline] vfs_read+0x55a/0xa30 fs/read_write.c:572 ksys_read+0x145/0x250 fs/read_write.c:715 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 5380 tgid 5379 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 __slab_free+0x2e7/0x390 mm/slub.c:5962 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:352 kasan_slab_alloc include/linux/kasan.h:252 [inline] slab_post_alloc_hook mm/slub.c:4970 [inline] slab_alloc_node mm/slub.c:5280 [inline] kmem_cache_alloc_noprof+0x367/0x6e0 mm/slub.c:5287 getname_kernel+0x5a/0x2f0 fs/namei.c:249 kern_path+0x1d/0x50 fs/namei.c:2862 do_loopback+0xd6/0x410 fs/namespace.c:2983 do_mount fs/namespace.c:4050 [inline] __do_sys_mount fs/namespace.c:4238 [inline] __se_sys_mount+0x313/0x410 fs/namespace.c:4215 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff888042321080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888042321100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888042321180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff888042321200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888042321280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================