================================================================== BUG: KASAN: use-after-free in xfs_iflush_cluster+0xe8/0x1230 fs/xfs/xfs_inode.c:3655 Read of size 8 at addr ffff88805ee036d0 by task xfsaild/loop2/4769 CPU: 1 PID: 4769 Comm: xfsaild/loop2 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 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+0xe8/0x1230 fs/xfs/xfs_inode.c:3655 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 4731: 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:4116 do_mkdirat+0x1dd/0x5c0 fs/namei.c:4141 __do_sys_mkdirat fs/namei.c:4156 [inline] __se_sys_mkdirat fs/namei.c:4154 [inline] __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4154 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 4172: 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+0x142/0x210 kernel/softirq.c:477 __local_bh_enable_ip+0x180/0x1c0 kernel/softirq.c:401 spin_unlock_bh include/linux/spinlock.h:409 [inline] nf_conntrack_tcp_packet+0x2433/0x6050 net/netfilter/nf_conntrack_proto_tcp.c:1235 nf_conntrack_handle_packet net/netfilter/nf_conntrack_core.c:1900 [inline] nf_conntrack_in+0xbd6/0x17b0 net/netfilter/nf_conntrack_core.c:1991 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline] nf_hook_slow+0xb9/0x200 net/netfilter/core.c:584 nf_hook+0x205/0x360 include/linux/netfilter.h:257 __ip_local_out+0x4b7/0x5e0 net/ipv4/ip_output.c:115 ip_local_out net/ipv4/ip_output.c:124 [inline] __ip_queue_xmit+0x1120/0x1c60 net/ipv4/ip_output.c:538 __tcp_transmit_skb+0x1ca3/0x31e0 net/ipv4/tcp_output.c:1404 tcp_transmit_skb net/ipv4/tcp_output.c:1422 [inline] tcp_write_xmit+0x1a8d/0x65c0 net/ipv4/tcp_output.c:2718 __tcp_push_pending_frames+0x92/0x250 net/ipv4/tcp_output.c:2903 tcp_push_pending_frames include/net/tcp.h:1918 [inline] tcp_data_snd_check net/ipv4/tcp_input.c:5572 [inline] tcp_rcv_established+0xf1e/0x1d00 net/ipv4/tcp_input.c:5983 tcp_v4_do_rcv+0x435/0x9b0 net/ipv4/tcp_ipv4.c:1738 sk_backlog_rcv include/net/sock.h:1080 [inline] __release_sock+0x1e6/0x460 net/core/sock.c:2730 release_sock+0x5b/0x1b0 net/core/sock.c:3273 tcp_sendmsg+0x35/0x40 net/ipv4/tcp.c:1461 sock_sendmsg_nosec net/socket.c:706 [inline] __sock_sendmsg net/socket.c:718 [inline] sock_write_iter+0x2a6/0x3a0 net/socket.c:1090 call_write_iter include/linux/fs.h:2179 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x748/0xd70 fs/read_write.c:594 ksys_write+0x153/0x260 fs/read_write.c:647 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 ffff88805ee03640 which belongs to the cache xfs_ili of size 256 The buggy address is located 144 bytes inside of 256-byte region [ffff88805ee03640, ffff88805ee03740) The buggy address belongs to the page: page:ffffea00017b80c0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x5ee03 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 0000000000000000 dead000000000122 ffff88801e302640 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 4668, ts 107995542916, free_ts 105378693947 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_vn_update_time+0x386/0x510 fs/xfs/xfs_iops.c:1070 inode_update_time fs/inode.c:1893 [inline] touch_atime+0x2f8/0x640 fs/inode.c:1966 file_accessed include/linux/fs.h:2528 [inline] filemap_read+0x236d/0x2560 mm/filemap.c:2715 xfs_file_buffered_read+0x182/0x300 fs/xfs/xfs_file.c:302 xfs_file_read_iter+0x276/0x500 fs/xfs/xfs_file.c:327 __kernel_read+0x51d/0x980 fs/read_write.c:443 integrity_kernel_read+0x86/0xd0 security/integrity/iint.c:228 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:485 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline] ima_calc_file_hash+0x946/0x1940 security/integrity/ima/ima_crypto.c:573 ima_collect_measurement+0x335/0x7e0 security/integrity/ima/ima_api.c:255 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 unfreeze_partials_cpu mm/slub.c:2543 [inline] __flush_cpu_slab mm/slub.c:2643 [inline] slub_cpu_dead+0xa1/0xd0 mm/slub.c:2731 cpuhp_invoke_callback+0x423/0x7e0 kernel/cpu.c:191 __cpuhp_invoke_callback_range kernel/cpu.c:677 [inline] cpuhp_invoke_callback_range kernel/cpu.c:701 [inline] cpuhp_down_callbacks kernel/cpu.c:1130 [inline] _cpu_down+0x455/0xbb0 kernel/cpu.c:1191 cpu_down_maps_locked kernel/cpu.c:1217 [inline] cpuhp_smt_disable+0xae/0x1d0 kernel/cpu.c:2261 __store_smt_control kernel/cpu.c:2501 [inline] control_store+0x121/0x150 kernel/cpu.c:2538 kernfs_fop_write_iter+0x3a8/0x500 fs/kernfs/file.c:296 call_write_iter include/linux/fs.h:2179 [inline] new_sync_write fs/read_write.c:507 [inline] vfs_write+0x748/0xd70 fs/read_write.c:594 ksys_write+0x153/0x260 fs/read_write.c:647 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 Memory state around the buggy address: ffff88805ee03580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88805ee03600: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb >ffff88805ee03680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88805ee03700: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff88805ee03780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================