EXT4-fs (loop3): Ignoring removed bh option ================================================================== 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+0x36d/0x40e0 fs/ext4/inode.c:4787 Read of size 8 at addr ffff88811b382bc8 by task syz.3.607/2466 CPU: 0 PID: 2466 Comm: syz.3.607 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 Call Trace: __dump_stack+0x21/0x24 lib/dump_stack.c:77 dump_stack_lvl+0x169/0x1d8 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+0x36d/0x40e0 fs/ext4/inode.c:4787 ext4_quota_enable fs/ext4/super.c:6447 [inline] ext4_enable_quotas+0x33b/0x6d0 fs/ext4/super.c:6483 ext4_fill_super+0x82a9/0x8b60 fs/ext4/super.c:5060 mount_bdev+0x28b/0x3a0 fs/super.c:1442 ext4_mount+0x34/0x40 fs/ext4/super.c:6662 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:2997 path_mount+0x572/0xc80 fs/namespace.c:3327 do_mount fs/namespace.c:3340 [inline] __do_sys_mount fs/namespace.c:3548 [inline] __se_sys_mount+0x318/0x380 fs/namespace.c:3525 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3525 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f36fb2a466a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f36f9d0ae68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f36f9d0aef0 RCX: 00007f36fb2a466a RDX: 0000200000000080 RSI: 0000200000000040 RDI: 00007f36f9d0aeb0 RBP: 0000200000000080 R08: 00007f36f9d0aef0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000040 R13: 00007f36f9d0aeb0 R14: 00000000000005fc R15: 00002000000004c0 Allocated by task 0: (stack is not available) The buggy address belongs to the object at ffff88811b3826a0 which belongs to the cache f2fs_inode_cache of size 1520 The buggy address is located 1320 bytes inside of 1520-byte region [ffff88811b3826a0, ffff88811b382c90) The buggy address belongs to the page: page:ffffea00046ce000 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88811b380ce0 pfn:0x11b380 head:ffffea00046ce000 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head) raw: 4000000000010200 dead000000000100 dead000000000122 ffff888102796a80 raw: ffff88811b380ce0 000000008013000b 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 312, ts 27892070971, free_ts 0 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+0x2235/0x23d0 mm/page_alloc.c:4254 __alloc_pages_nodemask+0x268/0x5f0 mm/page_alloc.c:5370 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+0x1af/0x2e0 mm/slub.c:2965 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2785 [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+0x55/0x4ed0 fs/f2fs/inode.c:505 f2fs_fill_super+0x45ba/0x6c70 fs/f2fs/super.c:4348 mount_bdev+0x28b/0x3a0 fs/super.c:1442 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4595 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:2997 page_owner free stack trace missing Memory state around the buggy address: ffff88811b382a80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88811b382b00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88811b382b80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff88811b382c00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88811b382c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== EXT4-fs warning (device loop3): ext4_enable_quotas:6491: Failed to enable quota tracking (type=0, err=-13, ino=3). Please run e2fsck to fix. EXT4-fs (loop3): mount failed