loop9: detected capacity change from 0 to 4096 EXT4-fs (loop9): Ignoring removed mblk_io_submit option EXT4-fs (loop9): Test dummy encryption mode enabled ================================================================== BUG: KASAN: slab-out-of-bounds in check_igot_inode fs/ext4/inode.c:-1 [inline] BUG: KASAN: slab-out-of-bounds in __ext4_iget+0x2bb/0x3e50 fs/ext4/inode.c:4715 Read of size 8 at addr ffff888111df7ef8 by task syz.9.2065/6627 CPU: 1 PID: 6627 Comm: syz.9.2065 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 Call Trace: __dump_stack+0x21/0x30 lib/dump_stack.c:88 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:427 [inline] kasan_report+0xf1/0x140 mm/kasan/report.c:444 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309 check_igot_inode fs/ext4/inode.c:-1 [inline] __ext4_iget+0x2bb/0x3e50 fs/ext4/inode.c:4715 ext4_quota_enable fs/ext4/super.c:6433 [inline] ext4_enable_quotas+0x33c/0x6d0 fs/ext4/super.c:6469 ext4_fill_super+0x82fa/0x8bd0 fs/ext4/super.c:4976 mount_bdev+0x2ae/0x3e0 fs/super.c:1400 ext4_mount+0x34/0x40 fs/ext4/super.c:6648 legacy_get_tree+0xed/0x190 fs/fs_context.c:611 vfs_get_tree+0x89/0x260 fs/super.c:1530 do_new_mount+0x25a/0xa20 fs/namespace.c:3034 path_mount+0x659/0xff0 fs/namespace.c:3364 do_mount fs/namespace.c:3377 [inline] __do_sys_mount fs/namespace.c:3585 [inline] __se_sys_mount+0x320/0x390 fs/namespace.c:3562 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3562 x64_sys_call+0x6bf/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f13bccf0a0a Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f13bb749e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f13bb749ee0 RCX: 00007f13bccf0a0a RDX: 0000200000000100 RSI: 0000200000000280 RDI: 00007f13bb749ea0 RBP: 0000200000000100 R08: 00007f13bb749ee0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000280 R13: 00007f13bb749ea0 R14: 0000000000000baf R15: 0000200000000540 Allocated by task 541: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:433 [inline] __kasan_slab_alloc+0xbd/0xf0 mm/kasan/common.c:466 kasan_slab_alloc include/linux/kasan.h:217 [inline] slab_post_alloc_hook+0x4f/0x2b0 mm/slab.h:550 slab_alloc_node mm/slub.c:3245 [inline] slab_alloc mm/slub.c:3255 [inline] kmem_cache_alloc+0xf7/0x260 mm/slub.c:3260 ext4_alloc_inode+0x21/0x640 fs/ext4/super.c:1289 alloc_inode fs/inode.c:264 [inline] iget_locked+0x16c/0x7e0 fs/inode.c:1318 __ext4_iget+0x233/0x3e50 fs/ext4/inode.c:4711 ext4_lookup+0x4b4/0x960 fs/ext4/namei.c:1858 __lookup_slow+0x2b8/0x410 fs/namei.c:1671 lookup_slow+0x57/0x70 fs/namei.c:1688 walk_component+0x325/0x460 fs/namei.c:1984 lookup_last fs/namei.c:2439 [inline] path_lookupat+0x180/0x490 fs/namei.c:2463 filename_lookup+0x214/0x540 fs/namei.c:2492 user_path_at_empty+0x47/0x1c0 fs/namei.c:2891 user_path_at include/linux/namei.h:57 [inline] do_faccessat+0x3ac/0xa20 fs/open.c:423 __do_sys_access fs/open.c:482 [inline] __se_sys_access fs/open.c:480 [inline] __x64_sys_access+0x61/0x70 fs/open.c:480 x64_sys_call+0x78a/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:22 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 The buggy address belongs to the object at ffff888111df74e0 which belongs to the cache ext4_inode_cache of size 1368 The buggy address is located 1216 bytes to the right of 1368-byte region [ffff888111df74e0, ffff888111df7a38) The buggy address belongs to the page: page:ffffea0004477c00 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888111df05d8 pfn:0x111df0 head:ffffea0004477c00 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head|zone=1) raw: 4000000000010200 0000000000000000 0000000100000001 ffff8881081f5980 raw: ffff888111df05d8 0000000080150008 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Reclaimable, gfp_mask 0xd2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_RECLAIMABLE), pid 280, ts 25079838798, free_ts 0 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x192/0x1b0 mm/page_alloc.c:2605 prep_new_page+0x1c/0x110 mm/page_alloc.c:2611 get_page_from_freelist+0x2d3a/0x2dc0 mm/page_alloc.c:4485 __alloc_pages+0x1a2/0x460 mm/page_alloc.c:5822 alloc_slab_page mm/slub.c:-1 [inline] allocate_slab mm/slub.c:1937 [inline] new_slab+0xa1/0x4d0 mm/slub.c:2000 ___slab_alloc+0x381/0x810 mm/slub.c:3033 __slab_alloc+0x49/0x90 mm/slub.c:3120 slab_alloc_node mm/slub.c:3211 [inline] slab_alloc mm/slub.c:3255 [inline] kmem_cache_alloc+0x138/0x260 mm/slub.c:3260 ext4_alloc_inode+0x21/0x640 fs/ext4/super.c:1289 alloc_inode fs/inode.c:264 [inline] new_inode_pseudo+0x62/0x210 fs/inode.c:1011 new_inode+0x28/0x1e0 fs/inode.c:1040 __ext4_new_inode+0x215/0x3730 fs/ext4/ialloc.c:963 ext4_mkdir+0x43f/0xce0 fs/ext4/namei.c:3066 vfs_mkdir+0x387/0x580 fs/namei.c:4073 do_mkdirat+0x171/0x4c0 fs/namei.c:4098 __do_sys_mkdir fs/namei.c:4118 [inline] __se_sys_mkdir fs/namei.c:4116 [inline] __x64_sys_mkdir+0x6e/0x80 fs/namei.c:4116 page_owner free stack trace missing Memory state around the buggy address: ffff888111df7d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888111df7e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888111df7e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888111df7f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888111df7f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== EXT4-fs warning (device loop9): ext4_enable_quotas:6477: Failed to enable quota tracking (type=0, err=-13, ino=3). Please run e2fsck to fix. EXT4-fs (loop9): mount failed overlayfs: failed to resolve './file0': -2 loop9: detected capacity change from 0 to 131072 F2FS-fs (loop9): Test dummy encryption mode enabled F2FS-fs (loop9): invalid crc value F2FS-fs (loop9): Found nat_bits in checkpoint F2FS-fs (loop9): Mounted with checkpoint version = 48b305e5 F2FS-fs (loop9): Test dummy encryption mode enabled