EXT4-fs error (device loop0): ext4_readdir:260: inode #2: block 48: comm syz-executor: path /2/file0: bad entry in directory: rec_len is smaller than minimal - offset=980, inode=0, rec_len=0, size=1024 fake=0
==================================================================
BUG: KASAN: slab-out-of-bounds in ext4_read_inline_data fs/ext4/inline.c:209 [inline]
BUG: KASAN: slab-out-of-bounds in ext4_read_inline_dir+0x48b/0xdf0 fs/ext4/inline.c:1483
Read of size 836 at addr ffff888053a870be by task syz-executor/14825

CPU: 0 UID: 0 PID: 14825 Comm: syz-executor Not tainted 6.11.0-rc7-syzkaller-00149-g0babf683783d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:93 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
 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
 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
 __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105
 ext4_read_inline_data fs/ext4/inline.c:209 [inline]
 ext4_read_inline_dir+0x48b/0xdf0 fs/ext4/inline.c:1483
 ext4_readdir+0x3bb/0x3500 fs/ext4/dir.c:158
 iterate_dir+0x57a/0x810 fs/readdir.c:108
 __do_sys_getdents64 fs/readdir.c:407 [inline]
 __se_sys_getdents64+0x20d/0x4f0 fs/readdir.c:392
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc343bb0093
Code: c1 66 0f 1f 44 00 00 48 83 c4 08 48 89 ef 5b 5d e9 52 43 f8 ff 66 90 b8 ff ff ff 7f 48 39 c2 48 0f 47 d0 b8 d9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 c7 c2 a8 ff ff ff f7 d8
RSP: 002b:00007ffcfb1a8fe8 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 000055557af6e640 RCX: 00007fc343bb0093
RDX: 0000000000008000 RSI: 000055557af6e640 RDI: 0000000000000006
RBP: 000055557af6e614 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000293 R12: ffffffffffffffa8
R13: 0000000000000016 R14: 000055557af6e610 R15: 00007ffcfb1ac380
 </TASK>

Allocated by task 14825:
 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:3992 [inline]
 slab_alloc_node mm/slub.c:4041 [inline]
 kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4048
 alloc_empty_file+0x9e/0x1d0 fs/file_table.c:202
 alloc_file fs/file_table.c:319 [inline]
 alloc_file_pseudo+0x1da/0x290 fs/file_table.c:350
 sock_alloc_file+0xb8/0x290 net/socket.c:469
 sock_map_fd net/socket.c:494 [inline]
 __sys_socket+0x1dd/0x3c0 net/socket.c:1715
 __do_sys_socket net/socket.c:1720 [inline]
 __se_sys_socket net/socket.c:1718 [inline]
 __x64_sys_socket+0x7a/0x90 net/socket.c:1718
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff888053a86f00
 which belongs to the cache filp of size 464
The buggy address is located 446 bytes inside of
 allocated 464-byte region [ffff888053a86f00, ffff888053a870d0)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x53a86
head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff88802a44da01
ksm flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xfdffffff(slab)
raw: 00fff00000000040 ffff88801b6fec80 ffffea0000bcba80 dead000000000003
raw: 0000000000000000 00000000000c000c 00000001fdffffff ffff88802a44da01
head: 00fff00000000040 ffff88801b6fec80 ffffea0000bcba80 dead000000000003
head: 0000000000000000 00000000000c000c 00000001fdffffff ffff88802a44da01
head: 00fff00000000001 ffffea00014ea181 ffffffffffffffff 0000000000000000
head: ffff888000000002 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 1, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 14363, tgid 14363 (syz-executor), ts 871079512306, free_ts 871022091726
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1500
 prep_new_page mm/page_alloc.c:1508 [inline]
 get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3446
 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4702
 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
 alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
 alloc_slab_page+0x5f/0x120 mm/slub.c:2325
 allocate_slab+0x5a/0x2f0 mm/slub.c:2488
 new_slab mm/slub.c:2541 [inline]
 ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3727
 __slab_alloc+0x58/0xa0 mm/slub.c:3817
 __slab_alloc_node mm/slub.c:3870 [inline]
 slab_alloc_node mm/slub.c:4029 [inline]
 kmem_cache_alloc_noprof+0x1c1/0x2a0 mm/slub.c:4048
 alloc_empty_file+0x9e/0x1d0 fs/file_table.c:202
 path_openat+0x105/0x3470 fs/namei.c:3872
 do_filp_open+0x235/0x490 fs/namei.c:3913
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1416
 do_sys_open fs/open.c:1431 [inline]
 __do_sys_openat fs/open.c:1447 [inline]
 __se_sys_openat fs/open.c:1442 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1442
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
page last free pid 14930 tgid 14929 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1101 [inline]
 free_unref_page+0xd19/0xea0 mm/page_alloc.c:2619
 mm_free_pgd kernel/fork.c:802 [inline]
 __mmdrop+0xb9/0x3d0 kernel/fork.c:918
 exit_mm+0x220/0x310 kernel/exit.c:571
 do_exit+0x9b2/0x27f0 kernel/exit.c:869
 do_group_exit+0x207/0x2c0 kernel/exit.c:1031
 get_signal+0x16a1/0x1740 kernel/signal.c:2917
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xc9/0x370 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff888053a86f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888053a87000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff888053a87080: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc
                                                 ^
 ffff888053a87100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888053a87180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================