================================================================== BUG: KASAN: slab-use-after-free in xfs_inode_item_push+0x293/0x2e0 fs/xfs/xfs_inode_item.c:743 Read of size 8 at addr ffff88805bd86a70 by task xfsaild/loop1/10724 CPU: 0 PID: 10724 Comm: xfsaild/loop1 Not tainted 6.9.0-rc5-next-20240426-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 xfs_inode_item_push+0x293/0x2e0 fs/xfs/xfs_inode_item.c:743 xfsaild_push_item fs/xfs/xfs_trans_ail.c:414 [inline] xfsaild_push fs/xfs/xfs_trans_ail.c:486 [inline] xfsaild+0xd98/0x28b0 fs/xfs/xfs_trans_ail.c:671 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Allocated by task 10652: 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:312 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3934 [inline] slab_alloc_node mm/slub.c:3994 [inline] kmem_cache_alloc_noprof+0x135/0x290 mm/slub.c:4001 xfs_inode_item_init+0x33/0xc0 fs/xfs/xfs_inode_item.c:838 xfs_trans_ijoin+0xeb/0x130 fs/xfs/libxfs/xfs_trans_inode.c:36 xfs_setattr_size+0x5bc/0xc80 fs/xfs/xfs_iops.c:913 xfs_vn_setattr+0x25d/0x320 fs/xfs/xfs_iops.c:1024 notify_change+0xb9d/0xe70 fs/attr.c:497 do_truncate+0x220/0x310 fs/open.c:65 vfs_truncate+0x2e1/0x3b0 fs/open.c:111 do_sys_truncate+0xde/0x190 fs/open.c:134 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Freed by task 10471: 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:579 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2190 [inline] slab_free mm/slub.c:4430 [inline] kmem_cache_free+0x145/0x340 mm/slub.c:4505 xfs_inode_free_callback+0x152/0x1d0 fs/xfs/xfs_icache.c:146 rcu_do_batch kernel/rcu/tree.c:2566 [inline] rcu_core+0xafd/0x1830 kernel/rcu/tree.c:2840 __do_softirq+0x2c6/0x980 kernel/softirq.c:554 The buggy address belongs to the object at ffff88805bd86a40 which belongs to the cache xfs_ili of size 264 The buggy address is located 48 bytes inside of freed 264-byte region [ffff88805bd86a40, ffff88805bd86b48) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88805bd86520 pfn:0x5bd86 flags: 0xfff80000000000(node=0|zone=1|lastcpupid=0xfff) page_type: 0xffffefff(slab) raw: 00fff80000000000 ffff88801b780000 dead000000000122 0000000000000000 raw: ffff88805bd86520 00000000800c000a 00000001ffffefff 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 0x152c50(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 5599, tgid 5598 (syz-executor.4), ts 80260187803, free_ts 77422145921 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1468 prep_new_page mm/page_alloc.c:1476 [inline] get_page_from_freelist+0x2ce2/0x2d90 mm/page_alloc.c:3438 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4696 __alloc_pages_node_noprof include/linux/gfp.h:244 [inline] alloc_pages_node_noprof include/linux/gfp.h:271 [inline] alloc_slab_page+0x5f/0x120 mm/slub.c:2259 allocate_slab+0x5a/0x2e0 mm/slub.c:2422 new_slab mm/slub.c:2475 [inline] ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3661 __slab_alloc+0x58/0xa0 mm/slub.c:3751 __slab_alloc_node mm/slub.c:3804 [inline] slab_alloc_node mm/slub.c:3982 [inline] kmem_cache_alloc_noprof+0x1c1/0x290 mm/slub.c:4001 xfs_inode_item_init+0x33/0xc0 fs/xfs/xfs_inode_item.c:838 xfs_trans_ijoin+0xeb/0x130 fs/xfs/libxfs/xfs_trans_inode.c:36 xfs_init_new_inode+0xc23/0xf00 fs/xfs/xfs_inode.c:879 xfs_create+0x9d5/0x1330 fs/xfs/xfs_inode.c:1095 xfs_generic_create+0x495/0xd70 fs/xfs/xfs_iops.c:200 lookup_open fs/namei.c:3505 [inline] open_last_lookups fs/namei.c:3574 [inline] path_openat+0x1425/0x3280 fs/namei.c:3804 do_filp_open+0x235/0x490 fs/namei.c:3834 do_sys_openat2+0x13e/0x1d0 fs/open.c:1405 page last free pid 5095 tgid 5095 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1088 [inline] free_unref_page+0xd22/0xea0 mm/page_alloc.c:2601 discard_slab mm/slub.c:2521 [inline] __put_partials+0xeb/0x130 mm/slub.c:2989 put_cpu_partial+0x17c/0x250 mm/slub.c:3064 __slab_free+0x2ea/0x3d0 mm/slub.c:4300 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x9e/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:322 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3934 [inline] slab_alloc_node mm/slub.c:3994 [inline] kmem_cache_alloc_noprof+0x135/0x290 mm/slub.c:4001 getname_flags+0xbd/0x4f0 fs/namei.c:139 getname fs/namei.c:218 [inline] __do_sys_unlink fs/namei.c:4455 [inline] __se_sys_unlink fs/namei.c:4453 [inline] __x64_sys_unlink+0x3c/0x60 fs/namei.c:4453 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff88805bd86900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88805bd86980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff88805bd86a00: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb ^ ffff88805bd86a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88805bd86b00: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc ==================================================================