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 ffff0000d8cbbff0 by task syz-executor.2/9864

CPU: 0 PID: 9864 Comm: syz-executor.2 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 9146:
 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_slab_alloc+0x74/0x8c mm/kasan/common.c:328
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x80/0x478 mm/slab.h:761
 slab_alloc_node mm/slub.c:3452 [inline]
 slab_alloc mm/slub.c:3460 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3467 [inline]
 kmem_cache_alloc+0x288/0x37c mm/slub.c:3476
 __nf_conntrack_alloc+0xa4/0x3ac net/netfilter/nf_conntrack_core.c:1637
 init_conntrack+0x264/0x1038 net/netfilter/nf_conntrack_core.c:1730
 resolve_normal_ct net/netfilter/nf_conntrack_core.c:1854 [inline]
 nf_conntrack_in+0x9a0/0x19b0 net/netfilter/nf_conntrack_core.c:2009
 ipv6_conntrack_local+0x28/0x38 net/netfilter/nf_conntrack_proto.c:403
 nf_hook_entry_hookfn include/linux/netfilter.h:142 [inline]
 nf_hook_slow+0xc8/0x1f4 net/netfilter/core.c:614
 nf_hook+0x228/0x39c include/linux/netfilter.h:257
 NF_HOOK include/linux/netfilter.h:300 [inline]
 ip6_xmit+0xc74/0x1bcc net/ipv6/ip6_output.c:343
 sctp_v6_xmit+0x810/0xff8 net/sctp/ipv6.c:250
 sctp_packet_transmit+0x2220/0x2730 net/sctp/output.c:653
 sctp_packet_singleton+0x1d4/0x2c0 net/sctp/outqueue.c:783
 sctp_outq_flush_ctrl net/sctp/outqueue.c:914 [inline]
 sctp_outq_flush+0x528/0x2e24 net/sctp/outqueue.c:1212
 sctp_outq_uncork+0x84/0xc0 net/sctp/outqueue.c:764
 sctp_side_effects net/sctp/sm_sideeffect.c:1199 [inline]
 sctp_do_sm+0x47c8/0x4dc4 net/sctp/sm_sideeffect.c:1170
 sctp_primitive_ASSOCIATE+0x98/0xc8 net/sctp/primitive.c:73
 __sctp_connect+0x7c0/0xb94 net/sctp/socket.c:1232
 __sctp_setsockopt_connectx net/sctp/socket.c:1334 [inline]
 sctp_getsockopt_connectx3+0x4a0/0x8ac net/sctp/socket.c:1419
 sctp_getsockopt+0x498/0x9a8 net/sctp/socket.c:8112
 sock_common_getsockopt+0xa8/0xc4 net/core/sock.c:3638
 __sys_getsockopt+0x1e8/0x484 net/socket.c:2293
 __do_sys_getsockopt net/socket.c:2308 [inline]
 __se_sys_getsockopt net/socket.c:2305 [inline]
 __arm64_sys_getsockopt+0xb8/0xd4 net/socket.c:2305
 __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 ffff0000d8cbbe00
 which belongs to the cache nf_conntrack of size 312
The buggy address is located 184 bytes to the right of
 312-byte region [ffff0000d8cbbe00, ffff0000d8cbbf38)

The buggy address belongs to the physical page:
page:00000000fb10fed3 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x118cba
head:00000000fb10fed3 order:1 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 ffff0000d26f0180 dead000000000122 0000000000000000
raw: 0000000000000000 0000000080150015 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000d8cbbe80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000d8cbbf00: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc
>ffff0000d8cbbf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                             ^
 ffff0000d8cbc000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000d8cbc080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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