XFS (loop6): Metadata corruption detected at xfs_btree_lookup_get_block+0x3d6/0x510 fs/xfs/libxfs/xfs_btree.c:1927, xfs_bnobt block 0x8
XFS (loop6): Unmount and run xfs_repair
XFS (loop6): User initiated shutdown received.
==================================================================
BUG: KASAN: slab-use-after-free in instrument_atomic_write include/linux/instrumented.h:97 [inline]
BUG: KASAN: slab-use-after-free in set_bit include/asm-generic/bitops/instrumented-atomic.h:28 [inline]
BUG: KASAN: slab-use-after-free in xlog_cil_ail_insert fs/xfs/xfs_log_cil.c:889 [inline]
BUG: KASAN: slab-use-after-free in xlog_cil_committed+0x4d5/0x1150 fs/xfs/xfs_log_cil.c:995
Write of size 8 at addr ffff88805c923430 by task syz.6.321/8505

CPU: 0 UID: 0 PID: 8505 Comm: syz.6.321 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 print_address_description+0x55/0x1e0 mm/kasan/report.c:378
 print_re[  312.944749][ T8505]  print_report+0x58/0x70 mm/kasan/report.c:482
 kasan_report+0x117/0x150 mm/kasan/report.c:595
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x264/0x2c0 mm/kasan/generic.c:200
 instrument_atomic_write include/linux/instrumented.h:97 [inline]
 set_bit include/asm-generic/bitops/instrumented-atomic.h:28 [inline]
 xlog_cil_ail_insert fs/xfs/xfs_log_cil.c:889 [inline]
 xlog_cil_committed+0x4d5/0x1150 fs/xfs/xfs_log_cil.c:995
 xlog_cil_process_committed+0x15c/0x1b0 fs/xfs/xfs_log_cil.c:1025
 xlog_state_shutdown_callbacks+0x277/0x380 fs/xfs/xfs_log.c:438
 xlog_force_shutdown+0x332/0x400 fs/xfs/xfs_log.c:3408
 xfs_do_force_shutdown+0x2ae/0x6d0 fs/xfs/xfs_fsops.c:507
 xfs_fs_goingdown+0x71/0x150 fs/xfs/xfs_fsops.c:-1
 xfs_file_ioctl+0x1325/0x16d0 fs/xfs/xfs_ioctl.c:1392
 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:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f214adccdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2149005028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f214b046090 RCX: 00007f214adccdd9
RDX: 0000200000000080 RSI: 000000008004587d RDI: 0000000000000009
RBP: 00007f214ae62d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f214b046128 R14: 00007f214b046090 R15: 00007ffe885557c8
 </TASK>

Allocated by task 8483:
 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:340 [inline]
 __kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:366
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4569 [inline]
 slab_alloc_node mm/slub.c:4898 [inline]
 kmem_cache_alloc_noprof+0x33b/0x680 mm/slub.c:4905
 xfs_buf_item_init+0x6a/0x6d0 fs/xfs/xfs_buf_item.c:873
 _xfs_trans_bjoin+0x46/0x110 fs/xfs/xfs_trans_buf.c:75
 xfs_trans_read_buf_map+0x294/0x8f0 fs/xfs/xfs_trans_buf.c:325
 xfs_trans_read_buf fs/xfs/xfs_trans.h:212 [inline]
 xfs_btree_read_buf_block+0x2b0/0x490 fs/xfs/libxfs/xfs_btree.c:1402
 xfs_btree_lookup_get_block+0x297/0x510 fs/xfs/libxfs/xfs_btree.c:1907
 xfs_btree_lookup+0x45a/0x1350 fs/xfs/libxfs/xfs_btree.c:2018
 xfs_alloc_lookup fs/xfs/libxfs/xfs_alloc.c:166 [inline]
 xfs_alloc_lookup_eq fs/xfs/libxfs/xfs_alloc.c:184 [inline]
 xfs_alloc_fixup_trees+0x219/0xd30 fs/xfs/libxfs/xfs_alloc.c:626
 xfs_alloc_cur_finish+0xd5/0x4a0 fs/xfs/libxfs/xfs_alloc.c:1117
 xfs_alloc_ag_vextent_near+0xd70/0x1280 fs/xfs/libxfs/xfs_alloc.c:1776
 xfs_alloc_vextent_iterate_ags+0x640/0x950 fs/xfs/libxfs/xfs_alloc.c:3764
 xfs_alloc_vextent_start_ag+0x378/0x850 fs/xfs/libxfs/xfs_alloc.c:3839
 xfs_bmap_btalloc_best_length fs/xfs/libxfs/xfs_bmap.c:3619 [inline]
 xfs_bmap_btalloc fs/xfs/libxfs/xfs_bmap.c:3663 [inline]
 xfs_bmapi_allocate+0x17c1/0x2da0 fs/xfs/libxfs/xfs_bmap.c:3938
 xfs_bmapi_write+0x843/0x1330 fs/xfs/libxfs/xfs_bmap.c:4267
 xfs_iomap_write_direct+0x3ba/0x6b0 fs/xfs/xfs_iomap.c:338
 xfs_direct_write_iomap_begin+0xfbf/0x1410 fs/xfs/xfs_iomap.c:1012
 iomap_iter+0x600/0xf90 fs/iomap/iter.c:110
 __iomap_dio_rw+0xcda/0x1e40 fs/iomap/direct-io.c:806
 iomap_dio_rw+0x45/0xb0 fs/iomap/direct-io.c:901
 xfs_file_dio_write_aligned+0x3bc/0x4a0 fs/xfs/xfs_file.c:780
 xfs_file_dio_write fs/xfs/xfs_file.c:989 [inline]
 xfs_file_write_iter+0x7ea/0x920 fs/xfs/xfs_file.c:1201
 iter_file_splice_write+0x9a6/0x10f0 fs/splice.c:736
 do_splice_from fs/splice.c:936 [inline]
 direct_splice_actor+0x104/0x160 fs/splice.c:1159
 splice_direct_to_actor+0x545/0xc80 fs/splice.c:1103
 do_splice_direct_actor fs/splice.c:1202 [inline]
 do_splice_direct+0x19b/0x2a0 fs/splice.c:1228
 do_sendfile+0x547/0x7e0 fs/read_write.c:1372
 __do_sys_sendfile64 fs/read_write.c:1433 [inline]
 __se_sys_sendfile64+0x144/0x1a0 fs/read_write.c:1419
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 8483:
 kasan_save_stack mm/kasan/common.c:57 [inline]
 kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
 kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2689 [inline]
 slab_free mm/slub.c:6250 [inline]
 kmem_cache_free+0x187/0x6c0 mm/slub.c:6377
 __xfs_buf_ioend+0x292/0x6f0 fs/xfs/xfs_buf.c:1109
 xfs_buf_iowait+0x156/0x480 fs/xfs/xfs_buf.c:1293
 _xfs_buf_read fs/xfs/xfs_buf.c:597 [inline]
 xfs_buf_read_map+0x32d/0xa20 fs/xfs/xfs_buf.c:663
 xfs_trans_read_buf_map+0x1db/0x8f0 fs/xfs/xfs_trans_buf.c:304
 xfs_trans_read_buf fs/xfs/xfs_trans.h:212 [inline]
 xfs_btree_read_buf_block+0x2b0/0x490 fs/xfs/libxfs/xfs_btree.c:1402
 xfs_btree_lookup_get_block+0x297/0x510 fs/xfs/libxfs/xfs_btree.c:1907
 xfs_btree_lookup+0x45a/0x1350 fs/xfs/libxfs/xfs_btree.c:2018
 xfs_alloc_lookup fs/xfs/libxfs/xfs_alloc.c:166 [inline]
 xfs_alloc_lookup_eq fs/xfs/libxfs/xfs_alloc.c:184 [inline]
 xfs_alloc_fixup_trees+0x219/0xd30 fs/xfs/libxfs/xfs_alloc.c:626
 xfs_alloc_cur_finish+0xd5/0x4a0 fs/xfs/libxfs/xfs_alloc.c:1117
 xfs_alloc_ag_vextent_near+0xd70/0x1280 fs/xfs/libxfs/xfs_alloc.c:1776
 xfs_alloc_vextent_iterate_ags+0x640/0x950 fs/xfs/libxfs/xfs_alloc.c:3764
 xfs_alloc_vextent_start_ag+0x378/0x850 fs/xfs/libxfs/xfs_alloc.c:3839
 xfs_bmap_btalloc_best_length fs/xfs/libxfs/xfs_bmap.c:3619 [inline]
 xfs_bmap_btalloc fs/xfs/libxfs/xfs_bmap.c:3663 [inline]
 xfs_bmapi_allocate+0x17c1/0x2da0 fs/xfs/libxfs/xfs_bmap.c:3938
 xfs_bmapi_write+0x843/0x1330 fs/xfs/libxfs/xfs_bmap.c:4267
 xfs_iomap_write_direct+0x3ba/0x6b0 fs/xfs/xfs_iomap.c:338
 xfs_direct_write_iomap_begin+0xfbf/0x1410 fs/xfs/xfs_iomap.c:1012
 iomap_iter+0x600/0xf90 fs/iomap/iter.c:110
 __iomap_dio_rw+0xcda/0x1e40 fs/iomap/direct-io.c:806
 iomap_dio_rw+0x45/0xb0 fs/iomap/direct-io.c:901
 xfs_file_dio_write_aligned+0x3bc/0x4a0 fs/xfs/xfs_file.c:780
 xfs_file_dio_write fs/xfs/xfs_file.c:989 [inline]
 xfs_file_write_iter+0x7ea/0x920 fs/xfs/xfs_file.c:1201
 iter_file_splice_write+0x9a6/0x10f0 fs/splice.c:736
 do_splice_from fs/splice.c:936 [inline]
 direct_splice_actor+0x104/0x160 fs/splice.c:1159
 splice_direct_to_actor+0x545/0xc80 fs/splice.c:1103
 do_splice_direct_actor fs/splice.c:1202 [inline]
 do_splice_direct+0x19b/0x2a0 fs/splice.c:1228
 do_sendfile+0x547/0x7e0 fs/read_write.c:1372
 __do_sys_sendfile64 fs/read_write.c:1433 [inline]
 __se_sys_sendfile64+0x144/0x1a0 fs/read_write.c:1419
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88805c9233f0
 which belongs to the cache xfs_buf_item of size 272
The buggy address is located 64 bytes inside of
 freed 272-byte region [ffff88805c9233f0, ffff88805c923500)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88805c9237e0 pfn:0x5c923
flags: 0x80000000000200(workingset|node=0|zone=1)
page_type: f5(slab)
raw: 0080000000000200 ffff88801d326780 ffff88801d329088 ffffea00015d3450
raw: ffff88805c9237e0 00000008000c0009 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 5708, tgid 5708 (kworker/1:5), ts 189791024873, free_ts 189790840195
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858
 prep_new_page mm/page_alloc.c:1866 [inline]
 get_page_from_freelist+0x27c8/0x2840 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226
 alloc_slab_page mm/slub.c:3278 [inline]
 allocate_slab+0x77/0x660 mm/slub.c:3467
 new_slab mm/slub.c:3525 [inline]
 refill_objects+0x33c/0x3d0 mm/slub.c:7255
 refill_sheaf mm/slub.c:2816 [inline]
 __pcs_replace_empty_main+0x373/0x720 mm/slub.c:4651
 alloc_from_pcs mm/slub.c:4749 [inline]
 slab_alloc_node mm/slub.c:4883 [inline]
 kmem_cache_alloc_noprof+0x433/0x680 mm/slub.c:4905
 xfs_buf_item_init+0x6a/0x6d0 fs/xfs/xfs_buf_item.c:873
 _xfs_trans_bjoin+0x46/0x110 fs/xfs/xfs_trans_buf.c:75
 xfs_trans_read_buf_map+0x294/0x8f0 fs/xfs/xfs_trans_buf.c:325
 xfs_trans_read_buf fs/xfs/xfs_trans.h:212 [inline]
 xfs_btree_read_buf_block+0x2b0/0x490 fs/xfs/libxfs/xfs_btree.c:1402
 xfs_btree_lookup_get_block+0x297/0x510 fs/xfs/libxfs/xfs_btree.c:1907
 xfs_btree_lookup+0x45a/0x1350 fs/xfs/libxfs/xfs_btree.c:2018
 xfs_alloc_lookup fs/xfs/libxfs/xfs_alloc.c:166 [inline]
 xfs_alloc_lookup_le fs/xfs/libxfs/xfs_alloc.c:212 [inline]
 xfs_free_ag_extent+0x277/0x17d0 fs/xfs/libxfs/xfs_alloc.c:2080
 __xfs_free_extent+0x36e/0x4f0 fs/xfs/libxfs/xfs_alloc.c:4047
 xfs_extent_free_finish_item+0x292/0x640 fs/xfs/xfs_extfree_item.c:553
page last free pid 5708 tgid 5708 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1402 [inline]
 __free_frozen_pages+0xfa6/0x10f0 mm/page_alloc.c:2943
 __slab_free+0x252/0x2a0 mm/slub.c:5612
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350
 kasan_slab_alloc include/linux/kasan.h:253 [inline]
 slab_post_alloc_hook mm/slub.c:4569 [inline]
 slab_alloc_node mm/slub.c:4898 [inline]
 kmem_cache_alloc_noprof+0x33b/0x680 mm/slub.c:4905
 xfs_buf_item_init+0x6a/0x6d0 fs/xfs/xfs_buf_item.c:873
 _xfs_trans_bjoin+0x46/0x110 fs/xfs/xfs_trans_buf.c:75
 xfs_trans_read_buf_map+0x294/0x8f0 fs/xfs/xfs_trans_buf.c:325
 xfs_trans_read_buf fs/xfs/xfs_trans.h:212 [inline]
 xfs_alloc_read_agfl+0x233/0x430 fs/xfs/libxfs/xfs_alloc.c:885
 xfs_alloc_fix_freelist+0x1161/0x1c30 fs/xfs/libxfs/xfs_alloc.c:2961
 xfs_free_extent_fix_freelist fs/xfs/libxfs/xfs_alloc.c:3990 [inline]
 __xfs_free_extent+0x1a5/0x4f0 fs/xfs/libxfs/xfs_alloc.c:4025
 xfs_extent_free_finish_item+0x292/0x640 fs/xfs/xfs_extfree_item.c:553
 xfs_defer_finish_one+0x5c6/0xd20 fs/xfs/libxfs/xfs_defer.c:595
 xfs_defer_finish_noroll+0x914/0x1310 fs/xfs/libxfs/xfs_defer.c:707
 xfs_defer_finish+0x1c/0x180 fs/xfs/libxfs/xfs_defer.c:741

Memory state around the buggy address:
 ffff88805c923300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88805c923380: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb
>ffff88805c923400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                     ^
 ffff88805c923480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88805c923500: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
==================================================================