==================================================================
BUG: KASAN: slab-out-of-bounds in __ext4_iget+0x254/0x31b4 fs/ext4/inode.c:4812
Read of size 8 at addr ffff0000e2677f30 by task syz-executor.4/6380

CPU: 0 PID: 6380 Comm: syz-executor.4 Not tainted 6.1.55-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:284 [inline]
 print_report+0x174/0x4c0 mm/kasan/report.c:395
 kasan_report+0xd4/0x130 mm/kasan/report.c:495
 __asan_report_load8_noabort+0x2c/0x38 mm/kasan/report_generic.c:351
 __ext4_iget+0x254/0x31b4 fs/ext4/inode.c:4812
 __ext4_fill_super fs/ext4/super.c:5399 [inline]
 ext4_fill_super+0x5a44/0x7570 fs/ext4/super.c:5664
 get_tree_bdev+0x360/0x54c fs/super.c:1355
 ext4_get_tree+0x28/0x38 fs/ext4/super.c:5694
 vfs_get_tree+0x90/0x274 fs/super.c:1562
 do_new_mount+0x25c/0x8c4 fs/namespace.c:3040
 path_mount+0x590/0xe58 fs/namespace.c:3370
 do_mount fs/namespace.c:3383 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount fs/namespace.c:3568 [inline]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3568
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581

Allocated by task 5148:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x80 mm/kasan/common.c:52
 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505
 __kasan_slab_alloc+0x74/0x8c mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x74/0x458 mm/slab.h:737
 slab_alloc_node mm/slub.c:3398 [inline]
 slab_alloc mm/slub.c:3406 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3413 [inline]
 kmem_cache_alloc+0x230/0x37c mm/slub.c:3422
 kmem_cache_zalloc include/linux/slab.h:679 [inline]
 _xfs_buf_alloc+0x78/0xd0c fs/xfs/xfs_buf.c:225
 xfs_buf_find_insert+0xc4/0x1238 fs/xfs/xfs_buf.c:617
 xfs_buf_get_map+0x1208/0x1a2c fs/xfs/xfs_buf.c:708
 xfs_buf_read_map+0xe8/0xaa8 fs/xfs/xfs_buf.c:811
 xfs_trans_read_buf_map+0x23c/0xc44 fs/xfs/xfs_trans_buf.c:289
 xfs_trans_read_buf fs/xfs/xfs_trans.h:212 [inline]
 xfs_btree_read_buf_block+0x1f4/0x2f8 fs/xfs/libxfs/xfs_btree.c:1351
 xfs_btree_lookup_get_block+0x2c0/0x66c fs/xfs/libxfs/xfs_btree.c:1822
 xfs_btree_lookup+0x388/0x117c fs/xfs/libxfs/xfs_btree.c:1913
 xfs_rmap_lookup_le fs/xfs/libxfs/xfs_rmap.c:52 [inline]
 xfs_rmap_map+0x2fc/0x1598 fs/xfs/libxfs/xfs_rmap.c:837
 xfs_rmap_finish_one+0x548/0x98c fs/xfs/libxfs/xfs_rmap.c:2458
 xfs_trans_log_finish_rmap_update fs/xfs/xfs_rmap_item.c:307 [inline]
 xfs_rmap_update_finish_item+0x10c/0x238 fs/xfs/xfs_rmap_item.c:412
 xfs_defer_finish_one fs/xfs/libxfs/xfs_defer.c:479 [inline]
 xfs_defer_finish_noroll+0x119c/0x24c0 fs/xfs/libxfs/xfs_defer.c:563
 __xfs_trans_commit+0x580/0x10a0 fs/xfs/xfs_trans.c:970
 xfs_trans_commit+0x24/0x34 fs/xfs/xfs_trans.c:1049
 xfs_dquot_disk_alloc+0x848/0xc70 fs/xfs/xfs_dquot.c:384
 xfs_qm_dqread+0x1b8/0x824 fs/xfs/xfs_dquot.c:665
 xfs_qm_dqget+0x23c/0x510 fs/xfs/xfs_dquot.c:870
 xfs_qm_quotacheck_dqadjust+0xe0/0x724 fs/xfs/xfs_qm.c:1077
 xfs_qm_dqusage_adjust+0x478/0x518 fs/xfs/xfs_qm.c:1196
 xfs_iwalk_ag_recs+0x458/0x8e8 fs/xfs/xfs_iwalk.c:220
 xfs_iwalk_run_callbacks+0x1bc/0x3b4 fs/xfs/xfs_iwalk.c:376
 xfs_iwalk_ag+0x8d4/0x9b0 fs/xfs/xfs_iwalk.c:482
 xfs_iwalk_ag_work+0x10c/0x1a8 fs/xfs/xfs_iwalk.c:624
 xfs_pwork_work+0x80/0x1a4 fs/xfs/xfs_pwork.c:47
 process_one_work+0x7ac/0x1404 kernel/workqueue.c:2292
 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860

Last potentially related work creation:
 kasan_save_stack+0x40/0x70 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486
 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496
 call_rcu+0xfc/0xa40 kernel/rcu/tree.c:2799
 xfs_buf_free+0x18c/0x45c fs/xfs/xfs_buf.c:321
 xfs_buf_rele+0xe9c/0x153c
 xfs_buftarg_drain+0x498/0x640 fs/xfs/xfs_buf.c:1854
 xfs_log_unmount+0x4c/0xbc fs/xfs/xfs_log.c:1114
 xfs_unmountfs+0x130/0x1d0 fs/xfs/xfs_mount.c:1081
 xfs_fs_put_super+0x78/0x260 fs/xfs/xfs_super.c:1118
 generic_shutdown_super+0x130/0x328 fs/super.c:501
 kill_block_super+0x70/0xdc fs/super.c:1459
 deactivate_locked_super+0xac/0x124 fs/super.c:332
 deactivate_super+0xf0/0x110 fs/super.c:363
 cleanup_mnt+0x394/0x41c fs/namespace.c:1186
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1193
 task_work_run+0x240/0x2f0 kernel/task_work.c:179
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 do_notify_resume+0x2144/0x3470 arch/arm64/kernel/signal.c:1132
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
 el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581

Second to last potentially related work creation:
 kasan_save_stack+0x40/0x70 mm/kasan/common.c:45
 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486
 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496
 insert_work+0x64/0x384 kernel/workqueue.c:1361
 __queue_work+0xd48/0x136c kernel/workqueue.c:1520
 queue_work_on+0xc0/0x16c kernel/workqueue.c:1548
 queue_work include/linux/workqueue.h:504 [inline]
 xfs_buf_ioend_async fs/xfs/xfs_buf.c:1359 [inline]
 xfs_buf_bio_end_io+0x1d4/0x260 fs/xfs/xfs_buf.c:1443
 bio_endio+0x7c8/0x80c block/bio.c:1549
 req_bio_endio block/blk-mq.c:763 [inline]
 blk_update_request+0x4ac/0xdf0 block/blk-mq.c:908
 blk_mq_end_request+0x54/0x88 block/blk-mq.c:1035
 lo_complete_rq+0x140/0x258 drivers/block/loop.c:370
 blk_complete_reqs block/blk-mq.c:1113 [inline]
 blk_done_softirq+0x11c/0x168 block/blk-mq.c:1118
 __do_softirq+0x30c/0xea0 kernel/softirq.c:571

The buggy address belongs to the object at ffff0000e2677a80
 which belongs to the cache xfs_buf of size 648
The buggy address is located 552 bytes to the right of
 648-byte region [ffff0000e2677a80, ffff0000e2677d08)

The buggy address belongs to the physical page:
page:00000000c0158eca refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000e2676d80 pfn:0x122674
head:00000000c0158eca order:2 compound_mapcount:0 compound_pincount:0
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000001 ffff0000c6ed7e00
raw: ffff0000e2676d80 0000000080130000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000e2677e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000e2677e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff0000e2677f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                     ^
 ffff0000e2677f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000e2678000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
EXT4-fs (loop4): corrupt root inode, run e2fsck
EXT4-fs (loop4): mount failed