loop0: detected capacity change from 0 to 2048
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
==================================================================
BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x4c0/0x668 fs/udf/inode.c:2100
Write of size 4 at addr ffff0000ce16d7f0 by task syz-executor.0/4416

CPU: 0 PID: 4416 Comm: syz-executor.0 Not tainted 5.15.110-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Call trace:
 dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0x174/0x1e4 mm/kasan/report.c:451
 __asan_report_store_n_noabort+0x40/0x4c mm/kasan/report_generic.c:325
 udf_write_aext+0x4c0/0x668 fs/udf/inode.c:2100
 udf_add_entry+0x11e0/0x28b0 fs/udf/namei.c:482
 udf_mkdir+0x158/0x7e0 fs/udf/namei.c:681
 vfs_mkdir+0x350/0x514 fs/namei.c:3994
 do_mkdirat+0x20c/0x610 fs/namei.c:4019
 __do_sys_mkdirat fs/namei.c:4034 [inline]
 __se_sys_mkdirat fs/namei.c:4032 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4032
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

Allocated by task 4324:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc+0xbc/0xfc mm/kasan/common.c:513
 __kasan_kmalloc+0x10/0x1c mm/kasan/common.c:522
 kasan_kmalloc include/linux/kasan.h:264 [inline]
 __kmalloc+0x29c/0x4c8 mm/slub.c:4407
 kmalloc include/linux/slab.h:596 [inline]
 kzalloc include/linux/slab.h:721 [inline]
 new_dir fs/proc/proc_sysctl.c:954 [inline]
 get_subdir fs/proc/proc_sysctl.c:999 [inline]
 __register_sysctl_table+0x8b0/0xf98 fs/proc/proc_sysctl.c:1348
 register_net_sysctl+0x2e4/0x330 net/sysctl_net.c:169
 neigh_sysctl_register+0x818/0x8ec net/core/neighbour.c:3735
 addrconf_sysctl_register+0xb4/0x178 net/ipv6/addrconf.c:7101
 ipv6_add_dev+0xa24/0xef4 net/ipv6/addrconf.c:453
 addrconf_notify+0x520/0xc58 net/ipv6/addrconf.c:3552
 notifier_call_chain kernel/notifier.c:83 [inline]
 raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:391
 call_netdevice_notifiers_info net/core/dev.c:1998 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2010 [inline]
 call_netdevice_notifiers+0x138/0x1b8 net/core/dev.c:2024
 register_netdevice+0xe84/0x1224 net/core/dev.c:10358
 veth_newlink+0x530/0xc08 drivers/net/veth.c:1702
 __rtnl_newlink net/core/rtnetlink.c:3462 [inline]
 rtnl_newlink+0x1048/0x1ab8 net/core/rtnetlink.c:3510
 rtnetlink_rcv_msg+0xa74/0xdac net/core/rtnetlink.c:5587
 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2533
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:5605
 netlink_unicast_kernel net/netlink/af_netlink.c:1330 [inline]
 netlink_unicast+0x664/0x938 net/netlink/af_netlink.c:1356
 netlink_sendmsg+0x844/0xb38 net/netlink/af_netlink.c:1952
 sock_sendmsg_nosec net/socket.c:704 [inline]
 sock_sendmsg net/socket.c:724 [inline]
 __sys_sendto+0x388/0x4d0 net/socket.c:2039
 __do_sys_sendto net/socket.c:2051 [inline]
 __se_sys_sendto net/socket.c:2047 [inline]
 __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2047
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

The buggy address belongs to the object at ffff0000ce16d400
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 496 bytes to the right of
 512-byte region [ffff0000ce16d400, ffff0000ce16d600)
The buggy address belongs to the page:
page:00000000b0f436ea refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000ce16f400 pfn:0x10e16c
head:00000000b0f436ea order:2 compound_mapcount:0 compound_pincount:0
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 dead000000000100 dead000000000122 ffff0000c0002600
raw: ffff0000ce16f400 000000008010000d 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000ce16d680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000ce16d700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff0000ce16d780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                             ^
 ffff0000ce16d800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000ce16d880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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