================================================================== BUG: KASAN: use-after-free in xfs_iflush_cluster+0xc6/0x1230 fs/xfs/xfs_inode.c:3653 Read of size 8 at addr ffff88805d4f3910 by task xfsaild/loop3/7227 CPU: 1 PID: 7227 Comm: xfsaild/loop3 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Call Trace: dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106 print_address_description+0x60/0x2d0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0xdf/0x130 mm/kasan/report.c:451 xfs_iflush_cluster+0xc6/0x1230 fs/xfs/xfs_inode.c:3653 xfs_inode_item_push+0x1c3/0x2a0 fs/xfs/xfs_inode_item.c:568 xfsaild_push_item fs/xfs/xfs_trans_ail.c:414 [inline] xfsaild_push fs/xfs/xfs_trans_ail.c:472 [inline] xfsaild+0xd04/0x26f0 fs/xfs/xfs_trans_ail.c:657 kthread+0x42e/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Allocated by task 7178: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] __kasan_slab_alloc+0x92/0xc0 mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x4c/0x380 mm/slab.h:519 slab_alloc_node mm/slub.c:3225 [inline] slab_alloc mm/slub.c:3233 [inline] kmem_cache_alloc+0x15d/0x280 mm/slub.c:3238 kmem_cache_zalloc include/linux/slab.h:728 [inline] xfs_inode_item_init+0x2f/0xc0 fs/xfs/xfs_inode_item.c:680 xfs_trans_ijoin+0xb2/0xe0 fs/xfs/libxfs/xfs_trans_inode.c:36 xfs_init_new_inode+0xa98/0xde0 fs/xfs/xfs_inode.c:919 xfs_create+0x751/0xe80 fs/xfs/xfs_inode.c:1045 xfs_generic_create+0x363/0xa50 fs/xfs/xfs_iops.c:197 vfs_mkdir+0x386/0x570 fs/namei.c:4073 do_mkdirat+0x1dd/0x5c0 fs/namei.c:4098 __do_sys_mkdirat fs/namei.c:4113 [inline] __se_sys_mkdirat fs/namei.c:4111 [inline] __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4111 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 Freed by task 7256: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360 ____kasan_slab_free+0xd5/0x110 mm/kasan/common.c:366 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1710 [inline] slab_free_freelist_hook+0xec/0x170 mm/slub.c:1736 slab_free mm/slub.c:3504 [inline] kmem_cache_free+0x8f/0x210 mm/slub.c:3520 xfs_inode_free_callback+0x1bc/0x230 fs/xfs/xfs_icache.c:142 rcu_do_batch kernel/rcu/tree.c:2523 [inline] rcu_core+0x96e/0x1650 kernel/rcu/tree.c:2763 handle_softirqs+0x336/0x830 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 The buggy address belongs to the object at ffff88805d4f38c0 which belongs to the cache xfs_ili of size 256 The buggy address is located 80 bytes inside of 256-byte region [ffff88805d4f38c0, ffff88805d4f39c0) The buggy address belongs to the page: page:ffffea0001753cc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5d4f3 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 0000000000000000 dead000000000122 ffff888146226dc0 raw: 0000000000000000 00000000800c000c 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Reclaimable, gfp_mask 0x112c50(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 4903, ts 110882164524, free_ts 99676046861 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x24f6/0x2670 mm/page_alloc.c:4192 __alloc_pages+0x1ee/0x480 mm/page_alloc.c:5501 alloc_slab_page mm/slub.c:1780 [inline] allocate_slab mm/slub.c:1917 [inline] new_slab+0xc0/0x4b0 mm/slub.c:1980 ___slab_alloc+0x807/0xdd0 mm/slub.c:3013 __slab_alloc mm/slub.c:3100 [inline] slab_alloc_node mm/slub.c:3191 [inline] slab_alloc mm/slub.c:3233 [inline] kmem_cache_alloc+0xf0/0x280 mm/slub.c:3238 kmem_cache_zalloc include/linux/slab.h:728 [inline] xfs_inode_item_init+0x2f/0xc0 fs/xfs/xfs_inode_item.c:680 xfs_trans_ijoin+0xb2/0xe0 fs/xfs/libxfs/xfs_trans_inode.c:36 xfs_init_new_inode+0xa98/0xde0 fs/xfs/xfs_inode.c:919 xfs_qm_qino_alloc+0x498/0x990 fs/xfs/xfs_qm.c:790 xfs_qm_init_quotainos+0x47f/0x6b0 fs/xfs/xfs_qm.c:1551 xfs_qm_init_quotainfo+0xa3/0x9a0 fs/xfs/xfs_qm.c:644 xfs_qm_mount_quotas+0x95/0x5f0 fs/xfs/xfs_qm.c:1435 xfs_mountfs+0x144a/0x1ae0 fs/xfs/xfs_mount.c:905 xfs_fs_fill_super+0x119b/0x13e0 fs/xfs/xfs_super.c:1684 get_tree_bdev+0x3e6/0x610 fs/super.c:1325 vfs_get_tree+0x88/0x270 fs/super.c:1530 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x637/0x6c0 mm/page_alloc.c:3317 free_unref_page+0x8f/0x2a0 mm/page_alloc.c:3396 free_slab mm/slub.c:2020 [inline] discard_slab mm/slub.c:2026 [inline] __unfreeze_partials+0x188/0x1e0 mm/slub.c:2512 put_cpu_partial+0x12d/0x190 mm/slub.c:2592 qlist_free_all+0x35/0x90 mm/kasan/quarantine.c:176 kasan_quarantine_reduce+0x150/0x160 mm/kasan/quarantine.c:283 __kasan_slab_alloc+0x2f/0xc0 mm/kasan/common.c:444 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x4c/0x380 mm/slab.h:519 slab_alloc_node mm/slub.c:3225 [inline] slab_alloc mm/slub.c:3233 [inline] kmem_cache_alloc+0x15d/0x280 mm/slub.c:3238 ptlock_alloc mm/memory.c:5556 [inline] ptlock_init include/linux/mm.h:2241 [inline] pmd_ptlock_init include/linux/mm.h:2327 [inline] pgtable_pmd_page_ctor include/linux/mm.h:2363 [inline] pmd_alloc_one include/asm-generic/pgalloc.h:129 [inline] __pmd_alloc+0x116/0x750 mm/memory.c:4958 pmd_alloc include/linux/mm.h:2191 [inline] __handle_mm_fault mm/memory.c:4747 [inline] handle_mm_fault+0xbd3/0x4440 mm/memory.c:4883 do_user_addr_fault+0x494/0xc90 arch/x86/mm/fault.c:1355 handle_page_fault arch/x86/mm/fault.c:1443 [inline] exc_page_fault+0x60/0x100 arch/x86/mm/fault.c:1496 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606 Memory state around the buggy address: ffff88805d4f3800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88805d4f3880: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb >ffff88805d4f3900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88805d4f3980: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff88805d4f3a00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================