UDF-fs: error (device loop4): udf_process_sequence: Primary Volume Descriptor not found!
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sit0: mtu less than device minimum
BUG: KASAN: use-after-free in udf_get_fileident+0x233/0x250 fs/udf/directory.c:176
Read of size 2 at addr ffff8880ae58e994 by task syz-executor.4/19839

CPU: 1 PID: 19839 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256
 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354
 kasan_report mm/kasan/report.c:412 [inline]
 __asan_report_load_n_noabort+0x8b/0xa0 mm/kasan/report.c:443
 udf_get_fileident+0x233/0x250 fs/udf/directory.c:176
 udf_fileident_read+0x550/0x1930 fs/udf/directory.c:37
 udf_readdir+0x559/0x1350 fs/udf/dir.c:129
 iterate_dir+0x473/0x5c0 fs/readdir.c:51
 ksys_getdents64+0x175/0x2b0 fs/readdir.c:357
 __do_sys_getdents64 fs/readdir.c:376 [inline]
 __se_sys_getdents64 fs/readdir.c:373 [inline]
 __x64_sys_getdents64+0x6f/0xb0 fs/readdir.c:373
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fb5548f70a9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb552e69168 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007fb554a16f80 RCX: 00007fb5548f70a9
RDX: 00000000000000de RSI: 00000000200001c0 RDI: 0000000000000004
RBP: 00007fb554952ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcb52db02f R14: 00007fb552e69300 R15: 0000000000022000

Allocated by task 4696:
 __do_kmalloc_node mm/slab.c:3689 [inline]
 __kmalloc_node_track_caller+0x4c/0x70 mm/slab.c:3703
 __kmalloc_reserve net/core/skbuff.c:137 [inline]
 __alloc_skb+0xae/0x560 net/core/skbuff.c:205
 alloc_skb include/linux/skbuff.h:995 [inline]
 alloc_uevent_skb+0x7b/0x210 lib/kobject_uevent.c:289
 uevent_net_broadcast_untagged lib/kobject_uevent.c:325 [inline]
 kobject_uevent_net_broadcast lib/kobject_uevent.c:407 [inline]
 kobject_uevent_env+0xa90/0x1480 lib/kobject_uevent.c:591
 kobject_synth_uevent+0x700/0x820 lib/kobject_uevent.c:208
 uevent_store+0x21/0x70 drivers/base/core.c:1257
 dev_attr_store+0x56/0x80 drivers/base/core.c:966
 sysfs_kf_write+0x110/0x160 fs/sysfs/file.c:140
 kernfs_fop_write+0x2b0/0x470 fs/kernfs/file.c:316
 __vfs_write+0xf7/0x770 fs/read_write.c:485
 vfs_write+0x1f3/0x540 fs/read_write.c:549
 ksys_write+0x12b/0x2a0 fs/read_write.c:599
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 4696:
 __cache_free mm/slab.c:3503 [inline]
 kfree+0xcc/0x210 mm/slab.c:3822
 skb_free_head net/core/skbuff.c:563 [inline]
 skb_release_data+0x6de/0x920 net/core/skbuff.c:583
 skb_release_all net/core/skbuff.c:640 [inline]
 __kfree_skb net/core/skbuff.c:654 [inline]
 consume_skb+0x113/0x3d0 net/core/skbuff.c:714
 skb_free_datagram+0x16/0xf0 net/core/datagram.c:329
 netlink_recvmsg+0x627/0xea0 net/netlink/af_netlink.c:1996
 sock_recvmsg_nosec net/socket.c:859 [inline]
 sock_recvmsg net/socket.c:866 [inline]
 sock_recvmsg+0xca/0x110 net/socket.c:862
 ___sys_recvmsg+0x255/0x570 net/socket.c:2389
 __sys_recvmsg net/socket.c:2438 [inline]
 __do_sys_recvmsg net/socket.c:2448 [inline]
 __se_sys_recvmsg net/socket.c:2445 [inline]
 __x64_sys_recvmsg+0x12f/0x220 net/socket.c:2445
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

The buggy address belongs to the object at ffff8880ae58e7c0
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 468 bytes inside of
 512-byte region [ffff8880ae58e7c0, ffff8880ae58e9c0)
The buggy address belongs to the page:
page:ffffea0002b96380 count:1 mapcount:0 mapping:ffff88813bff0940 index:0x0
flags: 0xfff00000000100(slab)
raw: 00fff00000000100 ffffea0002cf8608 ffffea0002bc4c48 ffff88813bff0940
raw: 0000000000000000 ffff8880ae58e040 0000000100000006 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880ae58e880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880ae58e900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880ae58e980: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
                         ^
 ffff8880ae58ea00: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00
 ffff8880ae58ea80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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