================================================================== BUG: KASAN: slab-use-after-free in xfs_inode_item_push+0x293/0x2e0 fs/xfs/xfs_inode_item.c:780 Read of size 8 at addr ffff888056e907e0 by task xfsaild/loop3/8030 CPU: 1 UID: 0 PID: 8030 Comm: xfsaild/loop3 Not tainted 6.13.0-rc5-syzkaller-00004-gccb98ccef0e5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0x169/0x550 mm/kasan/report.c:489 kasan_report+0x143/0x180 mm/kasan/report.c:602 xfs_inode_item_push+0x293/0x2e0 fs/xfs/xfs_inode_item.c:780 xfsaild_push_item fs/xfs/xfs_trans_ail.c:395 [inline] xfsaild_push fs/xfs/xfs_trans_ail.c:523 [inline] xfsaild+0x111c/0x2db0 fs/xfs/xfs_trans_ail.c:705 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Allocated by task 8020: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4119 [inline] slab_alloc_node mm/slub.c:4168 [inline] kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4175 xfs_inode_item_init+0x33/0xc0 fs/xfs/xfs_inode_item.c:875 xfs_trans_ijoin+0xeb/0x130 fs/xfs/libxfs/xfs_trans_inode.c:36 xfs_vn_update_time+0x3c6/0x5f0 fs/xfs/xfs_iops.c:1118 inode_update_time fs/inode.c:2124 [inline] touch_atime+0x27f/0x690 fs/inode.c:2197 file_accessed include/linux/fs.h:2539 [inline] filemap_read+0xd5c/0xf50 mm/filemap.c:2714 xfs_file_buffered_read+0x1af/0x370 fs/xfs/xfs_file.c:290 xfs_file_read_iter+0x262/0x4d0 fs/xfs/xfs_file.c:315 __kernel_read+0x515/0x9d0 fs/read_write.c:523 integrity_kernel_read+0xb0/0x100 security/integrity/iint.c:28 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:480 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:511 [inline] ima_calc_file_hash+0xae6/0x1b30 security/integrity/ima/ima_crypto.c:568 ima_collect_measurement+0x520/0xb10 security/integrity/ima/ima_api.c:293 process_measurement+0x1351/0x1fb0 security/integrity/ima/ima_main.c:372 ima_file_check+0xd9/0x120 security/integrity/ima/ima_main.c:572 security_file_post_open+0xb9/0x280 security/security.c:3121 do_open fs/namei.c:3830 [inline] path_openat+0x2ccd/0x3590 fs/namei.c:3987 do_filp_open+0x27f/0x4e0 fs/namei.c:4014 do_sys_openat2+0x13e/0x1d0 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_openat fs/open.c:1433 [inline] __se_sys_openat fs/open.c:1428 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1428 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 3: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:582 poison_slab_object mm/kasan/common.c:247 [inline] __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264 kasan_slab_free include/linux/kasan.h:233 [inline] slab_free_hook mm/slub.c:2353 [inline] slab_free mm/slub.c:4613 [inline] kmem_cache_free+0x195/0x410 mm/slub.c:4715 xfs_inode_free_callback+0x152/0x1d0 fs/xfs/xfs_icache.c:161 rcu_do_batch kernel/rcu/tree.c:2567 [inline] rcu_core+0xaac/0x17a0 kernel/rcu/tree.c:2823 handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 The buggy address belongs to the object at ffff888056e907b0 which belongs to the cache xfs_ili of size 264 The buggy address is located 48 bytes inside of freed 264-byte region [ffff888056e907b0, ffff888056e908b8) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888056e90000 pfn:0x56e90 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f5(slab) raw: 00fff00000000000 ffff888147ea78c0 dead000000000122 0000000000000000 raw: ffff888056e90000 00000000800c0009 00000001f5000000 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 0x52c50(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_RECLAIMABLE), pid 5962, tgid 5938 (syz.1.7), ts 84303908812, free_ts 21268291189 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1558 prep_new_page mm/page_alloc.c:1566 [inline] get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3476 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4753 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2269 alloc_slab_page+0x6a/0x110 mm/slub.c:2423 allocate_slab+0x5a/0x2b0 mm/slub.c:2589 new_slab mm/slub.c:2642 [inline] ___slab_alloc+0xc27/0x14a0 mm/slub.c:3830 __slab_alloc+0x58/0xa0 mm/slub.c:3920 __slab_alloc_node mm/slub.c:3995 [inline] slab_alloc_node mm/slub.c:4156 [inline] kmem_cache_alloc_noprof+0x268/0x380 mm/slub.c:4175 xfs_inode_item_init+0x33/0xc0 fs/xfs/xfs_inode_item.c:875 xfs_trans_ijoin+0xeb/0x130 fs/xfs/libxfs/xfs_trans_inode.c:36 xfs_trans_alloc_dir+0x238/0x780 fs/xfs/xfs_trans.c:1387 xfs_remove+0x5e5/0xc00 fs/xfs/xfs_inode.c:1932 xfs_vn_unlink+0x151/0x2a0 fs/xfs/xfs_iops.c:412 vfs_unlink+0x367/0x650 fs/namei.c:4523 do_unlinkat+0x4ae/0x830 fs/namei.c:4587 page last free pid 1 tgid 1 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_unref_page+0xd3f/0x1010 mm/page_alloc.c:2659 free_contig_range+0x14c/0x430 mm/page_alloc.c:6632 destroy_args+0x92/0x910 mm/debug_vm_pgtable.c:1017 debug_vm_pgtable+0x4be/0x550 mm/debug_vm_pgtable.c:1397 do_one_initcall+0x24a/0x870 init/main.c:1266 do_initcall_level+0x157/0x210 init/main.c:1328 do_initcalls+0x3f/0x80 init/main.c:1344 kernel_init_freeable+0x435/0x5d0 init/main.c:1577 kernel_init+0x1d/0x2b0 init/main.c:1466 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Memory state around the buggy address: ffff888056e90680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888056e90700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc >ffff888056e90780: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb ^ ffff888056e90800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888056e90880: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc 00 ==================================================================