EXT4-fs error (device loop4): htree_dirblock_to_tree:1112: inode #2: block 21: comm syz-executor242: bad entry in directory: directory entry overrun - offset=1004, inode=0, rec_len=1000, 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_inlinedir_to_tree+0x57a/0x11d0 fs/ext4/inline.c:1365
Read of size 324 at addr ffff88801f0c3c05 by task syz-executor242/5219

CPU: 1 UID: 0 PID: 5219 Comm: syz-executor242 Not tainted 6.11.0-rc4-syzkaller-00255-gd2bafcf224f3 #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_inlinedir_to_tree+0x57a/0x11d0 fs/ext4/inline.c:1365
 ext4_htree_fill_tree+0x5d8/0x1400 fs/ext4/namei.c:1211
 ext4_dx_readdir fs/ext4/dir.c:597 [inline]
 ext4_readdir+0x2b1c/0x3500 fs/ext4/dir.c:142
 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: 0033:0x7f9958524233
Code: c1 66 0f 1f 44 00 00 48 83 c4 08 48 89 ef 5b 5d e9 52 47 fb 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 b8 ff ff ff f7 d8
RSP: 002b:00007fff6deca968 EFLAGS: 00000293 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 0000555574b92770 RCX: 00007f9958524233
RDX: 0000000000008000 RSI: 0000555574b92770 RDI: 0000000000000005
RBP: 0000555574b92744 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000293 R12: ffffffffffffffb8
R13: 0000000000000016 R14: 0000555574b92740 R15: 00007fff6decdcd0
 </TASK>

Allocated by task 1:
 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:3988 [inline]
 slab_alloc_node mm/slub.c:4037 [inline]
 kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4044
 __kernfs_new_node+0xd8/0x870 fs/kernfs/dir.c:624
 kernfs_new_node+0x137/0x240 fs/kernfs/dir.c:700
 __kernfs_create_file+0x49/0x2e0 fs/kernfs/file.c:1034
 sysfs_add_file_mode_ns+0x24a/0x310 fs/sysfs/file.c:307
 sysfs_merge_group+0x1fd/0x450 fs/sysfs/group.c:373
 dpm_sysfs_add+0xd3/0x280 drivers/base/power/sysfs.c:707
 device_add+0x5bc/0xbf0 drivers/base/core.c:3642
 tty_register_device_attr+0x437/0x960 drivers/tty/tty_io.c:3275
 tty_register_device drivers/tty/tty_io.c:3210 [inline]
 tty_register_driver+0x5f6/0xc30 drivers/tty/tty_io.c:3473
 legacy_pty_init+0x3c7/0x610 drivers/tty/pty.c:581
 pty_init+0xe/0x20 drivers/tty/pty.c:943
 do_one_initcall+0x248/0x880 init/main.c:1267
 do_initcall_level+0x157/0x210 init/main.c:1329
 do_initcalls+0x3f/0x80 init/main.c:1345
 kernel_init_freeable+0x435/0x5d0 init/main.c:1578
 kernel_init+0x1d/0x2b0 init/main.c:1467
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

The buggy address belongs to the object at ffff88801f0c3b40
 which belongs to the cache kernfs_node_cache of size 176
The buggy address is located 21 bytes to the right of
 allocated 176-byte region [ffff88801f0c3b40, ffff88801f0c3bf0)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1f0c3
flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xfdffffff(slab)
raw: 00fff00000000000 ffff888016ee5000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000110011 00000001fdffffff 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 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 1, tgid 1 (swapper/0), ts 6740143553, free_ts 6726213725
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1493
 prep_new_page mm/page_alloc.c:1501 [inline]
 get_page_from_freelist+0x2e4c/0x2f10 mm/page_alloc.c:3439
 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4695
 __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:2321
 allocate_slab+0x5a/0x2f0 mm/slub.c:2484
 new_slab mm/slub.c:2537 [inline]
 ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3723
 __slab_alloc+0x58/0xa0 mm/slub.c:3813
 __slab_alloc_node mm/slub.c:3866 [inline]
 slab_alloc_node mm/slub.c:4025 [inline]
 kmem_cache_alloc_noprof+0x1c1/0x2a0 mm/slub.c:4044
 __kernfs_new_node+0xd8/0x870 fs/kernfs/dir.c:624
 kernfs_new_node+0x137/0x240 fs/kernfs/dir.c:700
 __kernfs_create_file+0x49/0x2e0 fs/kernfs/file.c:1034
 sysfs_add_file_mode_ns+0x24a/0x310 fs/sysfs/file.c:307
 sysfs_merge_group+0x1fd/0x450 fs/sysfs/group.c:373
 dpm_sysfs_add+0xd3/0x280 drivers/base/power/sysfs.c:707
 device_add+0x5bc/0xbf0 drivers/base/core.c:3642
 tty_register_device_attr+0x437/0x960 drivers/tty/tty_io.c:3275
page last free pid 46 tgid 46 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1094 [inline]
 free_unref_page+0xd19/0xea0 mm/page_alloc.c:2612
 vfree+0x186/0x2e0 mm/vmalloc.c:3364
 delayed_vfree_work+0x56/0x80 mm/vmalloc.c:3285
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Memory state around the buggy address:
 ffff88801f0c3b00: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00
 ffff88801f0c3b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc
>ffff88801f0c3c00: fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00
                   ^
 ffff88801f0c3c80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc
 ffff88801f0c3d00: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00
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