EXT4-fs (loop5): Ignoring removed oldalloc option EXT4-fs (loop5): Ignoring removed nomblk_io_submit option EXT4-fs (loop5): Warning: mounting with an experimental mount option 'dioread_nolock' for blocksize < PAGE_SIZE [EXT4 FS bs=1024, gc=1, bpg=131072, ipg=32, mo=e841c01c, mo2=0003] System zones: 0-1, 3-36 ================================================================== 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+0x381/0x44c0 fs/ext4/inode.c:4798 Read of size 8 at addr ffff88812ca99ee8 by task syz.5.1458/5784 CPU: 0 PID: 5784 Comm: syz.5.1458 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 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 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309 check_igot_inode fs/ext4/inode.c:-1 [inline] __ext4_iget+0x381/0x44c0 fs/ext4/inode.c:4798 ext4_quota_enable fs/ext4/super.c:6446 [inline] ext4_enable_quotas+0x33c/0x6d0 fs/ext4/super.c:6482 ext4_fill_super+0x84ad/0x8d70 fs/ext4/super.c:5059 mount_bdev+0x28b/0x3a0 fs/super.c:1442 ext4_mount+0x34/0x40 fs/ext4/super.c:6661 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 do_mount fs/namespace.c:3349 [inline] __do_sys_mount fs/namespace.c:3557 [inline] __se_sys_mount+0x320/0x390 fs/namespace.c:3534 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3534 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f13a48f3a0a 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:00007f13a330ae58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f13a330aee0 RCX: 00007f13a48f3a0a RDX: 0000200000000580 RSI: 0000200000000040 RDI: 00007f13a330aea0 RBP: 0000200000000580 R08: 00007f13a330aee0 R09: 0000000000800000 R10: 0000000000800000 R11: 0000000000000246 R12: 0000200000000040 R13: 00007f13a330aea0 R14: 00000000000005d8 R15: 0000200000000100 Allocated by task 0: (stack is not available) The buggy address belongs to the object at ffff88812ca999c0 which belongs to the cache f2fs_inode_cache of size 1520 The buggy address is located 1320 bytes inside of 1520-byte region [ffff88812ca999c0, ffff88812ca99fb0) The buggy address belongs to the page: page:ffffea0004b2a600 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88812ca9ed70 pfn:0x12ca98 head:ffffea0004b2a600 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head) raw: 4000000000010200 dead000000000100 dead000000000122 ffff8881029c7b00 raw: ffff88812ca9ed70 0000000080130010 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 0x1d2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 1856, ts 162526938700, free_ts 159457109765 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_slab_page mm/slub.c:-1 [inline] allocate_slab mm/slub.c:1813 [inline] new_slab+0x84/0x3f0 mm/slub.c:1874 new_slab_objects mm/slub.c:2632 [inline] ___slab_alloc+0x2a6/0x450 mm/slub.c:2796 __slab_alloc+0x63/0xa0 mm/slub.c:2836 slab_alloc_node mm/slub.c:2918 [inline] slab_alloc mm/slub.c:2960 [inline] kmem_cache_alloc+0x1ac/0x2d0 mm/slub.c:2965 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2783 [inline] f2fs_alloc_inode+0x26/0x410 fs/f2fs/super.c:1392 alloc_inode fs/inode.c:233 [inline] iget_locked+0x146/0x7d0 fs/inode.c:1275 f2fs_iget+0x55/0x4b60 fs/f2fs/inode.c:505 f2fs_fill_super+0x40f7/0x73f0 fs/f2fs/super.c:4242 mount_bdev+0x28b/0x3a0 fs/super.c:1442 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4598 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 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_pages_ok+0x80b/0x830 mm/page_alloc.c:1629 free_the_page mm/page_alloc.c:5445 [inline] __free_pages+0xd8/0x3b0 mm/page_alloc.c:5454 __free_slab+0xcf/0x190 mm/slub.c:1899 free_slab mm/slub.c:1914 [inline] discard_slab+0x29/0x40 mm/slub.c:1920 __slab_free+0x313/0x3a0 mm/slub.c:3136 do_slab_free mm/slub.c:3196 [inline] ___cache_free+0x10e/0x130 mm/slub.c:3215 qlink_free+0x50/0x90 mm/kasan/quarantine.c:157 qlist_free_all+0x5f/0xb0 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x14a/0x160 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x2f/0xf0 mm/kasan/common.c:440 kasan_slab_alloc include/linux/kasan.h:244 [inline] slab_post_alloc_hook+0x5d/0x2f0 mm/slab.h:580 slab_alloc_node mm/slub.c:2952 [inline] slab_alloc mm/slub.c:2960 [inline] kmem_cache_alloc+0x162/0x2d0 mm/slub.c:2965 getname_flags+0xb9/0x500 fs/namei.c:141 getname+0x19/0x20 fs/namei.c:212 do_sys_openat2+0xde/0x750 fs/open.c:1213 do_sys_open fs/open.c:1235 [inline] __do_sys_openat fs/open.c:1251 [inline] __se_sys_openat fs/open.c:1246 [inline] __x64_sys_openat+0x136/0x160 fs/open.c:1246 Memory state around the buggy address: ffff88812ca99d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88812ca99e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88812ca99e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88812ca99f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88812ca99f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== EXT4-fs warning (device loop5): ext4_enable_quotas:6490: Failed to enable quota tracking (type=0, err=-13, ino=3). Please run e2fsck to fix. EXT4-fs (loop5): mount failed