==================================================================
BUG: KASAN: slab-use-after-free in __list_splice include/linux/list.h:577 [inline]
BUG: KASAN: slab-use-after-free in list_splice_init include/linux/list.h:619 [inline]
BUG: KASAN: slab-use-after-free in xlog_cil_push_pcp_aggregate fs/xfs/xfs_log_cil.c:137 [inline]
BUG: KASAN: slab-use-after-free in xlog_cil_push_work+0x986/0x2a90 fs/xfs/xfs_log_cil.c:1417
Write of size 8 at addr ffff8880419ccee0 by task kworker/u8:20/3369

CPU: 0 UID: 0 PID: 3369 Comm: kworker/u8:20 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Workqueue: xfs-cil/loop1 xlog_cil_push_work
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_address_description+0x55/0x1e0 mm/kasan/report.c:378
 print_report+0x58/0x70 mm/kasan/report.c:482
 kasan_report+0x117/0x150 mm/kasan/report.c:595
 __list_splice include/linux/list.h:577 [inline]
 list_splice_init include/linux/list.h:619 [inline]
 xlog_cil_push_pcp_aggregate fs/xfs/xfs_log_cil.c:137 [inline]
 xlog_cil_push_work+0x986/0x2a90 fs/xfs/xfs_log_cil.c:1417
 process_one_work kernel/workqueue.c:3396 [inline]
 process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479
 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560
 kthread+0x38b/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Allocated by task 6863:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 unpoison_slab_object mm/kasan/common.c:351 [inline]
 __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:377
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4683 [inline]
 slab_alloc_node mm/slub.c:4996 [inline]
 kmem_cache_alloc_noprof+0x35b/0x680 mm/slub.c:5010
 xfs_buf_item_init+0x6a/0x6e0 fs/xfs/xfs_buf_item.c:872
 _xfs_trans_bjoin+0x46/0x110 fs/xfs/xfs_trans_buf.c:75
 __xfs_trans_getsb+0x65/0x4a0 fs/xfs/xfs_trans_buf.c:191
 xfs_log_sb+0x43/0x200 fs/xfs/libxfs/xfs_sb.c:1326
 xfs_sync_sb_buf fs/xfs/xfs_ioctl.c:1054 [inline]
 xfs_ioc_setlabel+0x23c/0x530 fs/xfs/xfs_ioctl.c:1121
 xfs_file_ioctl+0x6da/0xf40 fs/xfs/xfs_ioctl.c:1467
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xff/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 6863:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:264 [inline]
 __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:296
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2748 [inline]
 slab_free mm/slub.c:6509 [inline]
 kmem_cache_free+0x187/0x6d0 mm/slub.c:6636
 xfs_buf_ioend+0x235/0x790 fs/xfs/xfs_buf.c:1168
 xfs_buf_iowait+0x133/0x420 fs/xfs/xfs_buf.c:1337
 xfs_bwrite+0x5f/0xe0 fs/xfs/xfs_buf.c:1240
 xfs_sync_sb_buf fs/xfs/xfs_ioctl.c:1064 [inline]
 xfs_ioc_setlabel+0x2e0/0x530 fs/xfs/xfs_ioctl.c:1121
 xfs_file_ioctl+0x6da/0xf40 fs/xfs/xfs_ioctl.c:1467
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xff/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff8880419cce70
 which belongs to the cache xfs_buf_item of size 272
The buggy address is located 112 bytes inside of
 freed 272-byte region [ffff8880419cce70, ffff8880419ccf80)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x419cc
flags: 0x80000000000000(node=0|zone=1)
page_type: f5(slab)
raw: 0080000000000000 ffff888140aa9b40 dead000000000122 0000000000000000
raw: 0000000000000000 00000002000c000c 00000000f5000000 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0xd2c40(GFP_NOFS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 6797, tgid 6796 (syz.0.22), ts 199620297082
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f9/0x250 mm/page_alloc.c:1871
 prep_new_page mm/page_alloc.c:1879 [inline]
 get_page_from_freelist+0x2591/0x2600 mm/page_alloc.c:3943
 __alloc_frozen_pages_noprof+0x230/0x5c0 mm/page_alloc.c:5436
 alloc_slab_page mm/slub.c:3347 [inline]
 allocate_slab+0x7d/0x620 mm/slub.c:3462
 new_slab mm/slub.c:3513 [inline]
 refill_objects+0x2d8/0x350 mm/slub.c:7418
 refill_sheaf mm/slub.c:2885 [inline]
 __pcs_replace_empty_main+0x339/0x690 mm/slub.c:4774
 alloc_from_pcs mm/slub.c:4850 [inline]
 slab_alloc_node mm/slub.c:4984 [inline]
 kmem_cache_alloc_noprof+0x458/0x680 mm/slub.c:5010
 xfs_buf_item_init+0x6a/0x6e0 fs/xfs/xfs_buf_item.c:872
 _xfs_trans_bjoin+0x46/0x110 fs/xfs/xfs_trans_buf.c:75
 xfs_trans_read_buf_map+0x2ee/0x820 fs/xfs/xfs_trans_buf.c:294
 xfs_trans_read_buf fs/xfs/libxfs/xfs_trans.h:210 [inline]
 xfs_read_icluster+0x218/0x3e0 fs/xfs/libxfs/xfs_inode_buf.c:136
 xfs_iget_cache_miss fs/xfs/xfs_icache.c:663 [inline]
 xfs_iget+0xc34/0x2f00 fs/xfs/xfs_icache.c:804
 xfs_trans_metafile_iget+0x77/0x330 fs/xfs/xfs_icache.c:853
 xfs_rtginode_load+0x3a3/0x920 fs/xfs/libxfs/xfs_rtgroup.c:468
 xfs_rtmount_rtg fs/xfs/xfs_rtalloc.c:1684 [inline]
 xfs_rtmount_inodes+0x14f/0x7b0 fs/xfs/xfs_rtalloc.c:1721
 xfs_mountfs+0x1254/0x2380 fs/xfs/xfs_mount.c:1115
page last free pid 19 tgid 19 ts 195914138423 stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 __free_pages_prepare mm/page_alloc.c:1418 [inline]
 __free_frozen_pages+0xf8e/0x1070 mm/page_alloc.c:2962
 rcu_do_batch kernel/rcu/tree.c:2650 [inline]
 rcu_core kernel/rcu/tree.c:2919 [inline]
 rcu_cpu_kthread+0xb2f/0x1700 kernel/rcu/tree.c:3007
 smpboot_thread_fn+0x5f8/0xb30 kernel/smpboot.c:162
 kthread+0x38b/0x470 kernel/kthread.c:436
 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Memory state around the buggy address:
 ffff8880419ccd80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8880419cce00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fa fb
>ffff8880419cce80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                       ^
 ffff8880419ccf00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880419ccf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================