ext4 filesystem being mounted at /root/syzkaller-testdir1355954083/syzkaller.CVWSAr/1520/file0 supports timestamps until 2038 (0x7fffffff)
==================================================================
BUG: KASAN: use-after-free in ext4_rename_dir_prepare+0x42e/0x4a0 fs/ext4/namei.c:3704
Read of size 4 at addr ffff88811d698000 by task syz-executor.4/7018

CPU: 0 PID: 7018 Comm: syz-executor.4 Tainted: G        W         5.10.161-syzkaller-00019-g416c4356f372 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack_lvl+0x1e2/0x24b lib/dump_stack.c:118
 print_address_description+0x81/0x3c0 mm/kasan/report.c:233
 __kasan_report mm/kasan/report.c:419 [inline]
 kasan_report+0x1a4/0x1f0 mm/kasan/report.c:436
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308
 ext4_rename_dir_prepare+0x42e/0x4a0 fs/ext4/namei.c:3704
 ext4_cross_rename fs/ext4/namei.c:4212 [inline]
 ext4_rename2+0x1f37/0x45a0 fs/ext4/namei.c:4296
 vfs_rename+0x95e/0xde0 fs/namei.c:4389
 do_renameat2+0x83e/0x1190 fs/namei.c:4536
 __do_sys_renameat2 fs/namei.c:4571 [inline]
 __se_sys_renameat2 fs/namei.c:4568 [inline]
 __x64_sys_renameat2+0xbf/0xd0 fs/namei.c:4568
 do_syscall_64+0x34/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f4720bb70f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f471f92a168 EFLAGS: 00000246 ORIG_RAX: 000000000000013c
RAX: ffffffffffffffda RBX: 00007f4720cd6f80 RCX: 00007f4720bb70f9
RDX: 0000000000000004 RSI: 0000000020000240 RDI: 0000000000000004
RBP: 00007f4720c12ae9 R08: 0000000000000002 R09: 0000000000000000
R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe41571c4f R14: 00007f471f92a300 R15: 0000000000022000

Allocated by task 6934:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:428 [inline]
 __kasan_slab_alloc+0xb2/0xe0 mm/kasan/common.c:461
 kasan_slab_alloc include/linux/kasan.h:259 [inline]
 slab_post_alloc_hook include/../mm/slab.h:583 [inline]
 slab_alloc_node mm/slub.c:2956 [inline]
 slab_alloc mm/slub.c:2964 [inline]
 kmem_cache_alloc+0x16c/0x300 mm/slub.c:2969
 mempool_alloc_slab+0x1d/0x30 mm/mempool.c:513
 mempool_alloc+0x135/0x530 mm/mempool.c:393
 bvec_alloc+0x136/0x180 block/bio.c:208
 bio_alloc_bioset+0x3a0/0x650 block/bio.c:506
 __bio_alloc+0x53/0x300 fs/f2fs/data.c:402
 f2fs_submit_page_write+0xf61/0x1940 fs/f2fs/data.c:957
 do_write_page+0x528/0x960 fs/f2fs/segment.c:3489
 f2fs_do_write_node_page+0xeb/0x420 fs/f2fs/segment.c:3533
 __write_node_page+0xbd7/0x1980 fs/f2fs/node.c:1632
 f2fs_fsync_node_pages+0xa4e/0x12b0 fs/f2fs/node.c:1784
 f2fs_do_sync_file+0x153c/0x1cb0 fs/f2fs/file.c:330
 f2fs_sync_file+0xfd/0x150 fs/f2fs/file.c:382
 vfs_fsync_range+0x17b/0x190 fs/sync.c:202
 generic_write_sync include/linux/fs.h:2818 [inline]
 f2fs_file_write_iter+0x932/0xb80 fs/f2fs/file.c:4474
 do_iter_readv_writev+0x52a/0x720 fs/read_write.c:737
 do_iter_write+0x182/0x660 fs/read_write.c:866
 vfs_iter_write+0x7c/0xa0 fs/read_write.c:907
 iter_file_splice_write+0x8a1/0x10c0 fs/splice.c:686
 do_splice_from fs/splice.c:764 [inline]
 direct_splice_actor+0xfe/0x130 fs/splice.c:933
 splice_direct_to_actor+0x4f4/0xbd0 fs/splice.c:888
 do_splice_direct+0x2a0/0x3f0 fs/splice.c:976
 do_sendfile+0x9c7/0x1150 fs/read_write.c:1257
 __do_sys_sendfile64 fs/read_write.c:1318 [inline]
 __se_sys_sendfile64 fs/read_write.c:1304 [inline]
 __x64_sys_sendfile64+0x1ce/0x230 fs/read_write.c:1304
 do_syscall_64+0x34/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xc6

Freed by task 18:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4c/0x80 mm/kasan/common.c:46
 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:357
 ____kasan_slab_free+0x121/0x160 mm/kasan/common.c:360
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:368
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:1604 [inline]
 slab_free_freelist_hook+0xcc/0x1a0 mm/slub.c:1630
 slab_free mm/slub.c:3212 [inline]
 kmem_cache_free+0xa9/0x1f0 mm/slub.c:3228
 mempool_free_slab+0x1d/0x30 mm/mempool.c:520
 mempool_free+0xd5/0x310 mm/mempool.c:502
 bvec_free block/bio.c:163 [inline]
 bio_free block/bio.c:258 [inline]
 bio_put+0x221/0x420 block/bio.c:651
 f2fs_write_end_io+0x8f6/0x950 fs/f2fs/data.c:348
 bio_endio+0x465/0x5c0 block/bio.c:1459
 req_bio_endio block/blk-core.c:269 [inline]
 blk_update_request+0x6d5/0x1250 block/blk-core.c:1471
 blk_mq_end_request+0x42/0x80 block/blk-mq.c:568
 lo_complete_rq+0x151/0x2e0 drivers/block/loop.c:488
 blk_done_softirq+0x372/0x410 block/blk-mq.c:592
 __do_softirq+0x27e/0x596 kernel/softirq.c:305

The buggy address belongs to the object at ffff88811d698000
 which belongs to the cache biovec-max of size 4096
The buggy address is located 0 bytes inside of
 4096-byte region [ffff88811d698000, ffff88811d699000)
The buggy address belongs to the page:
page:ffffea000475a600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11d698
head:ffffea000475a600 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x8000000000010200(slab|head)
raw: 8000000000010200 dead000000000100 dead000000000122 ffff88810017f200
raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d2800(GFP_NOWAIT|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 6934, ts 2221979563344, free_ts 2203639156055
 set_page_owner include/linux/page_owner.h:35 [inline]
 post_alloc_hook mm/page_alloc.c:2386 [inline]
 prep_new_page mm/page_alloc.c:2392 [inline]
 get_page_from_freelist+0x755/0x810 mm/page_alloc.c:4073
 __alloc_pages_nodemask+0x3b6/0x890 mm/page_alloc.c:5160
 alloc_slab_page mm/slub.c:1815 [inline]
 allocate_slab+0x78/0x540 mm/slub.c:1817
 new_slab mm/slub.c:1878 [inline]
 new_slab_objects mm/slub.c:2636 [inline]
 ___slab_alloc+0x131/0x2e0 mm/slub.c:2800
 __slab_alloc+0x63/0xa0 mm/slub.c:2840
 slab_alloc_node mm/slub.c:2922 [inline]
 slab_alloc mm/slub.c:2964 [inline]
 kmem_cache_alloc+0x1ef/0x300 mm/slub.c:2969
 mempool_alloc_slab+0x1d/0x30 mm/mempool.c:513
 mempool_alloc+0x135/0x530 mm/mempool.c:393
 bvec_alloc+0x136/0x180 block/bio.c:208
 bio_alloc_bioset+0x3a0/0x650 block/bio.c:506
 __bio_alloc+0x53/0x300 fs/f2fs/data.c:402
 f2fs_submit_page_write+0xf61/0x1940 fs/f2fs/data.c:957
 do_write_page+0x528/0x960 fs/f2fs/segment.c:3489
 f2fs_do_write_node_page+0xeb/0x420 fs/f2fs/segment.c:3533
 __write_node_page+0xbd7/0x1980 fs/f2fs/node.c:1632
 f2fs_fsync_node_pages+0xa4e/0x12b0 fs/f2fs/node.c:1784
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:28 [inline]
 free_pages_prepare mm/page_alloc.c:1332 [inline]
 free_pcp_prepare+0x18c/0x1c0 mm/page_alloc.c:1406
 free_unref_page_prepare mm/page_alloc.c:3293 [inline]
 free_unref_page mm/page_alloc.c:3347 [inline]
 free_the_page mm/page_alloc.c:5219 [inline]
 __free_pages+0x390/0x570 mm/page_alloc.c:5228
 __vunmap+0x846/0x980 mm/vmalloc.c:2276
 __vfree mm/vmalloc.c:2324 [inline]
 vfree+0x5c/0x80 mm/vmalloc.c:2355
 kvfree+0x26/0x40 mm/util.c:645
 bpf_map_area_free+0x15/0x20 kernel/bpf/syscall.c:337
 htab_free_elems kernel/bpf/hashtab.c:221 [inline]
 prealloc_destroy kernel/bpf/hashtab.c:310 [inline]
 htab_map_free+0x56f/0x6d0 kernel/bpf/hashtab.c:1337
 bpf_map_free_deferred+0xaa/0x100 kernel/bpf/syscall.c:486
 process_one_work+0x726/0xc10 kernel/workqueue.c:2296
 worker_thread+0xb27/0x1550 kernel/workqueue.c:2442
 kthread+0x349/0x3d0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:299

Memory state around the buggy address:
 ffff88811d697f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88811d697f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88811d698000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff88811d698080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88811d698100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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