EXT4-fs error (device loop5): ext4_xattr_ibody_get:669: inode #18: comm syz-executor.5: corrupted in-inode xattr: bad magic number in in-inode xattr
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BUG: KASAN: slab-use-after-free in get_max_inline_xattr_value_size+0x369/0x510 fs/ext4/inline.c:62
Read of size 4 at addr ffff88807a82f024 by task syz-executor.5/16558

CPU: 0 PID: 16558 Comm: syz-executor.5 Not tainted 6.3.0-rc6-syzkaller-00016-g0d3eb744aed4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:319 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:430
 kasan_report+0x176/0x1b0 mm/kasan/report.c:536
 get_max_inline_xattr_value_size+0x369/0x510 fs/ext4/inline.c:62
 ext4_get_max_inline_size+0x141/0x200 fs/ext4/inline.c:113
 ext4_try_to_write_inline_data+0xd7/0x1250 fs/ext4/inline.c:662
 ext4_write_begin+0x295/0xee0 fs/ext4/inode.c:1178
 ext4_da_write_begin+0x42c/0x960 fs/ext4/inode.c:3057
 generic_perform_write+0x300/0x5e0 mm/filemap.c:3926
 ext4_buffered_write_iter+0x122/0x3a0 fs/ext4/file.c:289
 ext4_file_write_iter+0x1d6/0x1930
 call_write_iter include/linux/fs.h:1851 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x7b2/0xbb0 fs/read_write.c:584
 ksys_write+0x1a0/0x2c0 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f133ae8c169
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:00007f133bc5b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f133afac050 RCX: 00007f133ae8c169
RDX: 0000000000000120 RSI: 0000000020000440 RDI: 0000000000000004
RBP: 00007f133aee7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe0b3edc6f R14: 00007f133bc5b300 R15: 0000000000022000
 </TASK>

Allocated by task 5104:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
 __kasan_slab_alloc+0x66/0x70 mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:186 [inline]
 slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:769
 slab_alloc_node mm/slub.c:3452 [inline]
 slab_alloc mm/slub.c:3460 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3467 [inline]
 kmem_cache_alloc+0x11f/0x2e0 mm/slub.c:3476
 kmem_cache_zalloc include/linux/slab.h:710 [inline]
 fill_pool lib/debugobjects.c:168 [inline]
 __debug_object_init+0x1448/0x1880 lib/debugobjects.c:569
 hrtimer_init_sleeper_on_stack kernel/time/hrtimer.c:445 [inline]
 hrtimer_nanosleep+0x119/0x460 kernel/time/hrtimer.c:2095
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1277 [inline]
 __se_sys_clock_nanosleep+0x327/0x3b0 kernel/time/posix-timers.c:1254
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff88807a82f000
 which belongs to the cache debug_objects_cache of size 40
The buggy address is located 36 bytes inside of
 freed 40-byte region [ffff88807a82f000, ffff88807a82f028)

The buggy address belongs to the physical page:
page:ffffea0001ea0bc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88807a82f498 pfn:0x7a82f
flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000200 ffff88801244f8c0 ffffea0000b2b490 ffffea0000af9d90
raw: ffff88807a82f498 0000000000490026 00000001ffffffff 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 0x112820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_HARDWALL), pid 5104, tgid 5104 (syz-executor.4), ts 192774183552, free_ts 192313319199
 prep_new_page mm/page_alloc.c:2553 [inline]
 get_page_from_freelist+0x3246/0x33c0 mm/page_alloc.c:4326
 __alloc_pages+0x255/0x670 mm/page_alloc.c:5592
 alloc_slab_page+0x6a/0x160 mm/slub.c:1851
 allocate_slab mm/slub.c:1998 [inline]
 new_slab+0x84/0x2f0 mm/slub.c:2051
 ___slab_alloc+0xa85/0x10a0 mm/slub.c:3193
 __slab_alloc mm/slub.c:3292 [inline]
 __slab_alloc_node mm/slub.c:3345 [inline]
 slab_alloc_node mm/slub.c:3442 [inline]
 slab_alloc mm/slub.c:3460 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3467 [inline]
 kmem_cache_alloc+0x1b9/0x2e0 mm/slub.c:3476
 kmem_cache_zalloc include/linux/slab.h:710 [inline]
 fill_pool lib/debugobjects.c:168 [inline]
 __debug_object_init+0x1448/0x1880 lib/debugobjects.c:569
 hrtimer_init_sleeper_on_stack kernel/time/hrtimer.c:445 [inline]
 hrtimer_nanosleep+0x119/0x460 kernel/time/hrtimer.c:2095
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1277 [inline]
 __se_sys_clock_nanosleep+0x327/0x3b0 kernel/time/posix-timers.c:1254
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1454 [inline]
 free_pcp_prepare mm/page_alloc.c:1504 [inline]
 free_unref_page_prepare+0xe2f/0xe70 mm/page_alloc.c:3388
 free_unref_page+0x37/0x3f0 mm/page_alloc.c:3483
 __dev_alloc_name net/core/dev.c:1079 [inline]
 dev_alloc_name_ns+0x8bd/0x9b0 net/core/dev.c:1101
 ieee80211_if_add+0xffe/0x1730 net/mac80211/iface.c:2101
 ieee80211_register_hw+0x2ce5/0x38b0 net/mac80211/main.c:1405
 mac80211_hwsim_new_radio+0x23c5/0x4000 drivers/net/wireless/mac80211_hwsim.c:4583
 hwsim_new_radio_nl+0xcb6/0x1270 drivers/net/wireless/mac80211_hwsim.c:5176
 genl_family_rcv_msg_doit net/netlink/genetlink.c:968 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:1048 [inline]
 genl_rcv_msg+0xc33/0xf90 net/netlink/genetlink.c:1065
 netlink_rcv_skb+0x1df/0x430 net/netlink/af_netlink.c:2577
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1076
 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
 netlink_unicast+0x7c3/0x990 net/netlink/af_netlink.c:1365
 netlink_sendmsg+0xa2a/0xd60 net/netlink/af_netlink.c:1942
 sock_sendmsg_nosec net/socket.c:724 [inline]
 sock_sendmsg net/socket.c:747 [inline]
 __sys_sendto+0x475/0x630 net/socket.c:2142
 __do_sys_sendto net/socket.c:2154 [inline]
 __se_sys_sendto net/socket.c:2150 [inline]
 __x64_sys_sendto+0xde/0xf0 net/socket.c:2150
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
 ffff88807a82ef00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88807a82ef80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88807a82f000: fb fb fb fb fb fc fc fb fb fb fb fb fc fc fb fb
                               ^
 ffff88807a82f080: fb fb fb fc fc 00 00 00 00 00 fc fc 00 00 00 00
 ffff88807a82f100: 00 fc fc 00 00 00 00 00 fc fc 00 00 00 00 00 fc
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