loop3: detected capacity change from 0 to 1024
==================================================================
BUG: KASAN: slab-out-of-bounds in hfsplus_uni2asc+0x57a/0x11f0 fs/hfsplus/unicode.c:179
Read of size 2 at addr ffff88807c23540c by task syz-executor.3/28084

CPU: 0 PID: 28084 Comm: syz-executor.3 Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
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:377 [inline]
 print_report+0x163/0x540 mm/kasan/report.c:488
 kasan_report+0x142/0x170 mm/kasan/report.c:601
 hfsplus_uni2asc+0x57a/0x11f0 fs/hfsplus/unicode.c:179
 hfsplus_readdir+0x92c/0x1310 fs/hfsplus/dir.c:207
 iterate_dir+0x535/0x6f0 fs/readdir.c:110
 __do_sys_getdents fs/readdir.c:326 [inline]
 __se_sys_getdents+0x1ef/0x4c0 fs/readdir.c:311
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f438a67cda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f438b4460c8 EFLAGS: 00000246 ORIG_RAX: 000000000000004e
RAX: ffffffffffffffda RBX: 00007f438a7abf80 RCX: 00007f438a67cda9
RDX: 0000000000001000 RSI: 0000000020001140 RDI: 0000000000000004
RBP: 00007f438a6c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f438a7abf80 R15: 00007fff07387e78
 </TASK>

Allocated by task 28084:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x70 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:372 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:389
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slub.c:3981 [inline]
 __kmalloc+0x22e/0x490 mm/slub.c:3994
 kmalloc include/linux/slab.h:594 [inline]
 hfsplus_find_init+0x85/0x1c0 fs/hfsplus/bfind.c:21
 hfsplus_readdir+0x20e/0x1310 fs/hfsplus/dir.c:144
 iterate_dir+0x535/0x6f0 fs/readdir.c:110
 __do_sys_getdents fs/readdir.c:326 [inline]
 __se_sys_getdents+0x1ef/0x4c0 fs/readdir.c:311
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

The buggy address belongs to the object at ffff88807c235000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 0 bytes to the right of
 allocated 1036-byte region [ffff88807c235000, ffff88807c23540c)

The buggy address belongs to the physical page:
page:ffffea0001f08c00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7c230
head:ffffea0001f08c00 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000840(slab|head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff00000000840 ffff888012c42000 dead000000000100 dead000000000122
raw: 0000000000000000 0000000080080008 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 0xd28c0(GFP_NOWAIT|__GFP_IO|__GFP_FS|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5084, tgid 5084 (syz-executor.4), ts 212943451212, free_ts 212933475965
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1533
 prep_new_page mm/page_alloc.c:1540 [inline]
 get_page_from_freelist+0x33ea/0x3570 mm/page_alloc.c:3311
 __alloc_pages+0x255/0x680 mm/page_alloc.c:4567
 __alloc_pages_node include/linux/gfp.h:238 [inline]
 alloc_pages_node include/linux/gfp.h:261 [inline]
 alloc_slab_page+0x5f/0x160 mm/slub.c:2190
 allocate_slab mm/slub.c:2354 [inline]
 new_slab+0x84/0x2f0 mm/slub.c:2407
 ___slab_alloc+0xd17/0x13d0 mm/slub.c:3540
 __slab_alloc mm/slub.c:3625 [inline]
 __slab_alloc_node mm/slub.c:3678 [inline]
 slab_alloc_node mm/slub.c:3850 [inline]
 __do_kmalloc_node mm/slub.c:3980 [inline]
 __kmalloc_node_track_caller+0x2cd/0x4e0 mm/slub.c:4001
 kmalloc_reserve+0xf3/0x260 net/core/skbuff.c:582
 pskb_expand_head+0x202/0x1350 net/core/skbuff.c:2136
 netlink_trim+0x183/0x220 net/netlink/af_netlink.c:1323
 netlink_broadcast_filtered+0x76/0x1280 net/netlink/af_netlink.c:1529
 nlmsg_multicast_filtered include/net/netlink.h:1111 [inline]
 nlmsg_multicast include/net/netlink.h:1130 [inline]
 nlmsg_notify+0xfb/0x1b0 net/netlink/af_netlink.c:2586
 rtnl_notify net/core/rtnetlink.c:766 [inline]
 rtmsg_ifinfo_send net/core/rtnetlink.c:4099 [inline]
 rtmsg_ifinfo_event net/core/rtnetlink.c:4115 [inline]
 rtnetlink_event+0x21d/0x260 net/core/rtnetlink.c:6666
 notifier_call_chain+0x18c/0x3b0 kernel/notifier.c:93
 __netdev_upper_dev_link+0x4bf/0x670 net/core/dev.c:7759
 netdev_upper_dev_link+0x9e/0xe0 net/core/dev.c:7800
page last free pid 5074 tgid 5074 stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1140 [inline]
 free_unref_page_prepare+0x959/0xa80 mm/page_alloc.c:2346
 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2486
 discard_slab mm/slub.c:2453 [inline]
 __put_partials+0xeb/0x130 mm/slub.c:2922
 put_cpu_partial+0x17b/0x250 mm/slub.c:2997
 __slab_free+0x2fe/0x410 mm/slub.c:4166
 qlink_free mm/kasan/quarantine.c:160 [inline]
 qlist_free_all+0x6d/0xd0 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x14b/0x160 mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x23/0x70 mm/kasan/common.c:324
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3813 [inline]
 slab_alloc_node mm/slub.c:3860 [inline]
 kmalloc_trace+0x16a/0x360 mm/slub.c:4007
 kmalloc include/linux/slab.h:590 [inline]
 kzalloc include/linux/slab.h:711 [inline]
 kobject_uevent_env+0x285/0x8e0 lib/kobject_uevent.c:524
 __kobject_del+0xc2/0x300 lib/kobject.c:598
 kobject_cleanup lib/kobject.c:673 [inline]
 kobject_release lib/kobject.c:716 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1a3/0x430 lib/kobject.c:733
 netdev_queue_update_kobjects+0x3d9/0x480 net/core/net-sysfs.c:1773
 netif_set_real_num_tx_queues+0x18a/0x900 net/core/dev.c:2909
 veth_init_queues drivers/net/veth.c:1841 [inline]
 veth_newlink+0x915/0xcd0 drivers/net/veth.c:1958
 rtnl_newlink_create net/core/rtnetlink.c:3515 [inline]
 __rtnl_newlink net/core/rtnetlink.c:3735 [inline]
 rtnl_newlink+0x1584/0x2080 net/core/rtnetlink.c:3748

Memory state around the buggy address:
 ffff88807c235300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88807c235380: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff88807c235400: 00 04 fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                      ^
 ffff88807c235480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88807c235500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================