UDF-fs: error (device loop0): 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 ffff0000d125a7f0 by task syz-executor.0/10417

CPU: 1 PID: 10417 Comm: syz-executor.0 Not tainted 6.2.0-syzkaller-18302-g596b6b709632 #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 5969:
 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]
 inetdev_init+0x94/0x480 net/ipv4/devinet.c:269
 inetdev_event+0x244/0x11e4 net/ipv4/devinet.c:1535
 notifier_call_chain kernel/notifier.c:87 [inline]
 raw_notifier_call_chain+0xd4/0x164 kernel/notifier.c:455
 call_netdevice_notifiers_info net/core/dev.c:1936 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:1974 [inline]
 call_netdevice_notifiers+0x138/0x1b8 net/core/dev.c:1988
 register_netdevice+0xea8/0x1270 net/core/dev.c:10070
 __ip_tunnel_create+0x23c/0x304 net/ipv4/ip_tunnel.c:267
 ip_tunnel_init_net+0x1e0/0x5b0 net/ipv4/ip_tunnel.c:1073
 ipgre_tap_init_net+0x38/0x48 net/ipv4/ip_gre.c:1692
 ops_init+0x29c/0x50c net/core/net_namespace.c:135
 setup_net+0x424/0xaac net/core/net_namespace.c:338
 copy_net_ns+0x3d0/0x640 net/core/net_namespace.c:490
 create_new_namespaces+0x344/0x614 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0x104/0x154 kernel/nsproxy.c:228
 ksys_unshare+0x45c/0x874 kernel/fork.c:3202
 __do_sys_unshare kernel/fork.c:3273 [inline]
 __se_sys_unshare kernel/fork.c:3271 [inline]
 __arm64_sys_unshare+0x3c/0x50 kernel/fork.c:3271
 __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 ffff0000d125a400
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 496 bytes to the right of
 512-byte region [ffff0000d125a400, ffff0000d125a600)

The buggy address belongs to the physical page:
page:00000000bcb64b3a refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x111258
head:00000000bcb64b3a order:2 compound_mapcount:0 subpages_mapcount:0 compound_pincount:0
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 ffff0000c0002600 dead000000000100 dead000000000122
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000d125a680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000d125a700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff0000d125a780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                                             ^
 ffff0000d125a800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000d125a880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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