loop0: detected capacity change from 0 to 1024 EXT4-fs: Ignoring removed nomblk_io_submit option EXT4-fs (loop0): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: none. ======================================================= WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= ext4: Unknown parameter 'heartbeat' loop0: detected capacity change from 1024 to 64 ================================================================== BUG: KASAN: out-of-bounds in ext4_xattr_set_entry+0x92b/0x1ed0 fs/ext4/xattr.c:1767 Read of size 18446744073709551600 at addr ffff8880128132d0 by task syz.0.0/5314 CPU: 0 UID: 0 PID: 5314 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 04/01/2014 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 print_address_description+0x55/0x1e0 mm/kasan/report.c:378 print_report+0x58/0x70 mm/kasan/report.c:482 kasan_report+0x117/0x150 mm/kasan/report.c:595 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x264/0x2c0 mm/kasan/generic.c:200 __asan_memmove+0x29/0x70 mm/kasan/shadow.c:94 ext4_xattr_set_entry+0x92b/0x1ed0 fs/ext4/xattr.c:1767 ext4_xattr_ibody_set+0x262/0x710 fs/ext4/xattr.c:2277 ext4_destroy_inline_data_nolock+0x23a/0x5f0 fs/ext4/inline.c:471 ext4_convert_inline_data_nolock+0x208/0x980 fs/ext4/inline.c:1132 ext4_convert_inline_data+0x484/0x5c0 fs/ext4/inline.c:2012 ext4_fallocate+0x1e2/0x400 fs/ext4/extents.c:4979 vfs_fallocate+0x65a/0x7e0 fs/open.c:338 ksys_fallocate fs/open.c:362 [inline] __do_sys_fallocate fs/open.c:367 [inline] __se_sys_fallocate fs/open.c:365 [inline] __x64_sys_fallocate+0xbf/0x110 fs/open.c:365 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc138b9e159 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:00007fc139b1bfe8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007fc138e25fa0 RCX: 00007fc138b9e159 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007fc138c3506b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000008800000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fc138e26038 R14: 00007fc138e25fa0 R15: 00007fffadd51038 The buggy address belongs to the physical page: page: refcount:2 mapcount:0 mapping:ffff88801d025940 index:0x2 pfn:0x12813 memcg:ffff888043d5d600 aops:def_blk_aops ino:700000 dentry name(?):"" flags: 0xfff68000004024(referenced|lru|private|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff68000004024 ffffea0000482a08 ffffea00007d3488 ffff88801d025940 raw: 0000000000000002 ffff888042f4eee0 00000002ffffffff ffff888043d5d600 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Movable, gfp_mask 0x148c48(GFP_NOFS|__GFP_MOVABLE|__GFP_NOFAIL|__GFP_COMP|__GFP_HARDWALL), pid 5315, tgid 5313 (syz.0.0), ts 94905807280 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871 prep_new_page mm/page_alloc.c:1879 [inline] get_page_from_freelist+0x2209/0x2280 mm/page_alloc.c:3943 __alloc_frozen_pages_noprof+0x217/0x5a0 mm/page_alloc.c:5436 alloc_pages_mpol+0x21e/0x390 mm/mempolicy.c:2486 alloc_frozen_pages_noprof mm/mempolicy.c:2557 [inline] alloc_pages_noprof+0xb1/0x2b0 mm/mempolicy.c:2577 folio_alloc_noprof+0x1e/0x30 mm/mempolicy.c:2587 filemap_alloc_folio_noprof+0x111/0x460 mm/filemap.c:1019 __filemap_get_folio_mpol+0x402/0x1000 mm/filemap.c:2018 __filemap_get_folio include/linux/pagemap.h:761 [inline] grow_dev_folio fs/buffer.c:858 [inline] grow_buffers fs/buffer.c:924 [inline] __getblk_slow fs/buffer.c:942 [inline] bdev_getblk+0x1f4/0x6e0 fs/buffer.c:1346 __getblk include/linux/buffer_head.h:378 [inline] sb_getblk include/linux/buffer_head.h:384 [inline] __ext4_get_inode_loc+0x56c/0xf40 fs/ext4/inode.c:4921 ext4_get_inode_loc+0x81/0xf0 fs/ext4/inode.c:5049 ext4_xattr_ibody_get+0x113/0x4b0 fs/ext4/xattr.c:659 ext4_xattr_get+0x121/0x690 fs/ext4/xattr.c:720 vfs_getxattr_alloc+0x454/0x5c0 fs/xattr.c:416 ima_read_xattr+0x38/0x60 security/integrity/ima/ima_appraise.c:236 process_measurement+0x110a/0x1c10 security/integrity/ima/ima_main.c:406 page last free pid 29 tgid 29 ts 94870152515 stack trace: reset_page_owner include/linux/page_owner.h:26 [inline] __free_pages_prepare mm/page_alloc.c:1418 [inline] __free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962 __folio_put+0x4b3/0x590 mm/folio.c:106 folio_put include/linux/mm.h:2160 [inline] migrate_folio_done mm/migrate.c:1209 [inline] migrate_folio_move mm/migrate.c:1440 [inline] migrate_folios_move mm/migrate.c:1749 [inline] migrate_pages_batch+0x3c61/0x4f50 mm/migrate.c:2005 migrate_pages_sync mm/migrate.c:2035 [inline] migrate_pages+0x1b9f/0x2920 mm/migrate.c:2144 compact_zone+0x34ba/0x4ca0 mm/compaction.c:2698 compact_node+0x210/0x310 mm/compaction.c:2945 kcompactd+0xc0b/0x12c0 mm/compaction.c:3243 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Memory state around the buggy address: ffff888012813180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888012813200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888012813280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff888012813300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888012813380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================