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BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x578/0x668 fs/udf/inode.c:2099
Write of size 4 at addr ffff0000ed8c53f8 by task syz.2.150/5065

CPU: 1 PID: 5065 Comm: syz.2.150 Not tainted 6.1.113-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:284 [inline]
 print_report+0x174/0x4c0 mm/kasan/report.c:395
 kasan_report+0xd4/0x130 mm/kasan/report.c:495
 __asan_report_store_n_noabort+0x28/0x34 mm/kasan/report_generic.c:367
 udf_write_aext+0x578/0x668 fs/udf/inode.c:2099
 udf_add_entry+0x11e0/0x28b0 fs/udf/namei.c:482
 udf_mkdir+0x158/0x7e0 fs/udf/namei.c:681
 vfs_mkdir+0x334/0x4e4 fs/namei.c:4106
 do_mkdirat+0x220/0x510 fs/namei.c:4131
 __do_sys_mkdirat fs/namei.c:4146 [inline]
 __se_sys_mkdirat fs/namei.c:4144 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4144
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585

Allocated by task 22:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x80 mm/kasan/common.c:52
 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:374 [inline]
 __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:383
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slab_common.c:936 [inline]
 __kmalloc_node_track_caller+0xd0/0x1c0 mm/slab_common.c:956
 kmalloc_reserve net/core/skbuff.c:446 [inline]
 __alloc_skb+0x180/0x580 net/core/skbuff.c:515
 alloc_skb include/linux/skbuff.h:1271 [inline]
 ndisc_alloc_skb+0xd4/0x260 net/ipv6/ndisc.c:424
 ndisc_ns_create+0x1e8/0x65c net/ipv6/ndisc.c:624
 ndisc_send_ns+0xb8/0x164 net/ipv6/ndisc.c:666
 addrconf_dad_work+0x99c/0x1390 net/ipv6/addrconf.c:4203
 process_one_work+0x7ac/0x1404 kernel/workqueue.c:2292
 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864

Freed by task 22:
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4c/0x80 mm/kasan/common.c:52
 kasan_save_free_info+0x38/0x5c mm/kasan/generic.c:516
 ____kasan_slab_free+0x144/0x1c0 mm/kasan/common.c:236
 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:244
 kasan_slab_free include/linux/kasan.h:177 [inline]
 slab_free_hook mm/slub.c:1724 [inline]
 slab_free_freelist_hook mm/slub.c:1750 [inline]
 slab_free mm/slub.c:3661 [inline]
 __kmem_cache_free+0x2c0/0x4b4 mm/slub.c:3674
 kfree+0xcc/0x1b8 mm/slab_common.c:988
 skb_free_head net/core/skbuff.c:762 [inline]
 skb_release_data+0x488/0x6b0 net/core/skbuff.c:791
 skb_release_all net/core/skbuff.c:856 [inline]
 __kfree_skb net/core/skbuff.c:870 [inline]
 kfree_skb_reason+0x1a4/0x47c net/core/skbuff.c:893
 kfree_skb include/linux/skbuff.h:1220 [inline]
 ip6_mc_input+0x928/0xaf8 net/ipv6/ip6_input.c:589
 dst_input include/net/dst.h:454 [inline]
 ip6_rcv_finish+0x1f4/0x220 net/ipv6/ip6_input.c:79
 NF_HOOK+0x328/0x3d4 include/linux/netfilter.h:302
 ipv6_rcv+0x98/0xb8 net/ipv6/ip6_input.c:310
 __netif_receive_skb_one_core net/core/dev.c:5532 [inline]
 __netif_receive_skb+0x18c/0x400 net/core/dev.c:5646
 process_backlog+0x410/0x784 net/core/dev.c:5974
 __napi_poll+0xb4/0x3f0 net/core/dev.c:6541
 napi_poll net/core/dev.c:6608 [inline]
 net_rx_action+0x5cc/0xd3c net/core/dev.c:6722
 handle_softirqs+0x318/0xd58 kernel/softirq.c:571
 __do_softirq+0x14/0x20 kernel/softirq.c:605

The buggy address belongs to the object at ffff0000ed8c5000
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 504 bytes to the right of
 512-byte region [ffff0000ed8c5000, ffff0000ed8c5200)

The buggy address belongs to the physical page:
page:00000000de5d16b8 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12d8c4
head:00000000de5d16b8 order:2 compound_mapcount:0 compound_pincount:0
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000001 ffff0000c0002600
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000ed8c5280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000ed8c5300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff0000ed8c5380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                                ^
 ffff0000ed8c5400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000ed8c5480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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overlayfs: missing 'lowerdir'