loop0: detected capacity change from 0 to 2048
==================================================================
BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x6e6/0x7e0 fs/udf/inode.c:2103
Write of size 4 at addr ffff888078ba57f8 by task syz-executor335/3607

CPU: 1 PID: 3607 Comm: syz-executor335 Not tainted 6.0.0-rc7-syzkaller-00220-gffb4d94b4314 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
 print_address_description+0x65/0x4b0 mm/kasan/report.c:317
 print_report+0x108/0x1f0 mm/kasan/report.c:433
 kasan_report+0xc3/0xf0 mm/kasan/report.c:495
 udf_write_aext+0x6e6/0x7e0 fs/udf/inode.c:2103
 udf_add_entry+0x1712/0x3300 fs/udf/namei.c:482
 udf_mkdir+0x13c/0x980 fs/udf/namei.c:681
 vfs_mkdir+0x3b3/0x590 fs/namei.c:4013
 do_mkdirat+0x279/0x550 fs/namei.c:4038
 __do_sys_mkdirat fs/namei.c:4053 [inline]
 __se_sys_mkdirat fs/namei.c:4051 [inline]
 __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4051
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f0f29255509
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd23f812c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0f29255509
RDX: 00000000000001ff RSI: 0000000020000000 RDI: ffffffffffffff9c
RBP: 00007f0f29214a40 R08: 00007ffd23f811a0 R09: 0000000000000000
R10: 00007ffd23f81190 R11: 0000000000000246 R12: 00007f0f29214ad0
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

Allocated by task 3186:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:437 [inline]
 ____kasan_kmalloc+0xcd/0x100 mm/kasan/common.c:516
 kasan_kmalloc include/linux/kasan.h:234 [inline]
 __kmalloc_node_track_caller+0x265/0x400 mm/slub.c:4969
 kmalloc_reserve net/core/skbuff.c:362 [inline]
 __alloc_skb+0x112/0x2b0 net/core/skbuff.c:434
 alloc_skb include/linux/skbuff.h:1257 [inline]
 netlink_alloc_large_skb net/netlink/af_netlink.c:1191 [inline]
 netlink_sendmsg+0x774/0xcd0 net/netlink/af_netlink.c:1896
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 ____sys_sendmsg+0x5b4/0x940 net/socket.c:2482
 ___sys_sendmsg net/socket.c:2536 [inline]
 __sys_sendmsg+0x23e/0x340 net/socket.c:2565
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Freed by task 3186:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x3d/0x60 mm/kasan/common.c:45
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:370
 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:367
 kasan_slab_free include/linux/kasan.h:200 [inline]
 slab_free_hook mm/slub.c:1759 [inline]
 slab_free_freelist_hook+0x12e/0x1a0 mm/slub.c:1785
 slab_free mm/slub.c:3539 [inline]
 kfree+0xda/0x210 mm/slub.c:4567
 skb_free_head net/core/skbuff.c:662 [inline]
 skb_release_data+0x586/0x790 net/core/skbuff.c:691
 skb_release_all net/core/skbuff.c:756 [inline]
 __kfree_skb+0x56/0x1d0 net/core/skbuff.c:770
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x7ef/0x9c0 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x9b3/0xcd0 net/netlink/af_netlink.c:1921
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 ____sys_sendmsg+0x5b4/0x940 net/socket.c:2482
 ___sys_sendmsg net/socket.c:2536 [inline]
 __sys_sendmsg+0x23e/0x340 net/socket.c:2565
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff888078ba5400
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 504 bytes to the right of
 512-byte region [ffff888078ba5400, ffff888078ba5600)

The buggy address belongs to the physical page:
page:ffffea0001e2e900 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x78ba4
head:ffffea0001e2e900 order:2 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffffea00009a2200 dead000000000002 ffff888012041c80
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 2984, tgid 2984 (udevd), ts 14396137599, free_ts 11413256744
 prep_new_page mm/page_alloc.c:2532 [inline]
 get_page_from_freelist+0x742/0x7c0 mm/page_alloc.c:4283
 __alloc_pages+0x259/0x560 mm/page_alloc.c:5549
 alloc_slab_page+0x70/0xf0 mm/slub.c:1829
 allocate_slab+0x5e/0x520 mm/slub.c:1974
 new_slab mm/slub.c:2034 [inline]
 ___slab_alloc+0x3ee/0xc40 mm/slub.c:3036
 __slab_alloc mm/slub.c:3123 [inline]
 slab_alloc_node mm/slub.c:3214 [inline]
 __kmalloc_node_track_caller+0x2c3/0x400 mm/slub.c:4964
 kmalloc_reserve net/core/skbuff.c:362 [inline]
 __alloc_skb+0x112/0x2b0 net/core/skbuff.c:434
 alloc_skb include/linux/skbuff.h:1257 [inline]
 netlink_alloc_large_skb net/netlink/af_netlink.c:1191 [inline]
 netlink_sendmsg+0x774/0xcd0 net/netlink/af_netlink.c:1896
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 ____sys_sendmsg+0x5b4/0x940 net/socket.c:2482
 ___sys_sendmsg net/socket.c:2536 [inline]
 __sys_sendmsg+0x23e/0x340 net/socket.c:2565
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 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:1449 [inline]
 free_pcp_prepare+0x812/0x900 mm/page_alloc.c:1499
 free_unref_page_prepare mm/page_alloc.c:3380 [inline]
 free_unref_page+0x7d/0x5f0 mm/page_alloc.c:3476
 free_contig_range+0xa3/0x160 mm/page_alloc.c:9453
 destroy_args+0xfe/0x91d mm/debug_vm_pgtable.c:1031
 debug_vm_pgtable+0x43e/0x497 mm/debug_vm_pgtable.c:1354
 do_one_initcall+0x1b9/0x3e0 init/main.c:1296
 do_initcall_level+0x168/0x218 init/main.c:1369
 do_initcalls+0x4b/0x8c init/main.c:1385
 kernel_init_freeable+0x3f1/0x57b init/main.c:1623
 kernel_init+0x19/0x2b0 init/main.c:1512
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306

Memory state around the buggy address:
 ffff888078ba5680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888078ba5700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888078ba5780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                                ^
 ffff888078ba5800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888078ba5880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================