UDF-fs: error (device loop1): udf_process_sequence: Primary Volume Descriptor not found!
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
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BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x4c0/0x668 fs/udf/inode.c:2088
Write of size 4 at addr ffff00012660fff0 by task syz-executor.1/10362

CPU: 1 PID: 10362 Comm: syz-executor.1 Not tainted 6.2.0-syzkaller-18300-g2ebd1fbb946d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
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+0xd0/0x124 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:306 [inline]
 print_report+0x174/0x4c0 mm/kasan/report.c:417
 kasan_report+0xd4/0x130 mm/kasan/report.c:517
 __asan_report_store_n_noabort+0x28/0x34 mm/kasan/report_generic.c:367
 udf_write_aext+0x4c0/0x668 fs/udf/inode.c:2088
 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:4036
 do_mkdirat+0x200/0x5f8 fs/namei.c:4061
 __do_sys_mkdirat fs/namei.c:4076 [inline]
 __se_sys_mkdirat fs/namei.c:4074 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4074
 __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:142
 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193
 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+0x190/0x194 arch/arm64/kernel/entry.S:591

Allocated by task 5977:
 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:512
 ____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]
 kmalloc_trace+0x7c/0x94 mm/slab_common.c:1067
 kmalloc include/linux/slab.h:580 [inline]
 kzalloc include/linux/slab.h:720 [inline]
 ipv6_add_addr+0x3a0/0xc1c net/ipv6/addrconf.c:1099
 add_addr+0x168/0x444 net/ipv6/addrconf.c:3102
 add_v4_addrs+0x710/0xe74 net/ipv6/addrconf.c:3167
 addrconf_gre_config net/ipv6/addrconf.c:3443 [inline]
 addrconf_init_auto_addrs+0x1d8/0xc7c net/ipv6/addrconf.c:3461
 addrconf_notify+0x7a8/0xc74 net/ipv6/addrconf.c:3642
 notifier_call_chain kernel/notifier.c:87 [inline]
 raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:455
 __dev_notify_flags+0x2bc/0x544
 dev_change_flags+0xd0/0x15c net/core/dev.c:8599
 do_setlink+0xc70/0x3334 net/core/rtnetlink.c:2827
 __rtnl_newlink net/core/rtnetlink.c:3590 [inline]
 rtnl_newlink+0x1354/0x1b1c net/core/rtnetlink.c:3637
 rtnetlink_rcv_msg+0x6ec/0xc8c net/core/rtnetlink.c:6141
 netlink_rcv_skb+0x214/0x3c4 net/netlink/af_netlink.c:2574
 rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6159
 netlink_unicast_kernel net/netlink/af_netlink.c:1339 [inline]
 netlink_unicast+0x660/0x8d4 net/netlink/af_netlink.c:1365
 netlink_sendmsg+0x800/0xae0 net/netlink/af_netlink.c:1942
 sock_sendmsg_nosec net/socket.c:714 [inline]
 sock_sendmsg net/socket.c:734 [inline]
 __sys_sendto+0x3b4/0x504 net/socket.c:2120
 __do_sys_sendto net/socket.c:2132 [inline]
 __se_sys_sendto net/socket.c:2128 [inline]
 __arm64_sys_sendto+0xd8/0xf8 net/socket.c:2128
 __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:142
 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193
 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+0x190/0x194 arch/arm64/kernel/entry.S:591

The buggy address belongs to the object at ffff00012660fc00
 which belongs to the cache kmalloc-cg-512 of size 512
The buggy address is located 496 bytes to the right of
 512-byte region [ffff00012660fc00, ffff00012660fe00)

The buggy address belongs to the physical page:
page:00000000811fee26 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x16660c
head:00000000811fee26 order:2 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0
memcg:ffff0000cae4d601
anon flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 ffff0000c000c600 0000000000000000 dead000000000001
raw: 0000000000000000 0000000000100010 00000001ffffffff ffff0000cae4d601
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff00012660fe80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff00012660ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff00012660ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                             ^
 ffff000126610000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff000126610080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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