netlink: 52 bytes leftover after parsing attributes in process `syz-executor.3'.
netlink: 'syz-executor.3': attribute type 28 has an invalid length.
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BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:72 [inline]
BUG: KASAN: null-ptr-deref in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
BUG: KASAN: null-ptr-deref in ida_free+0x218/0x2d0 lib/idr.c:511
Read of size 8 at addr 0000000000000000 by task syz-executor.3/15997

CPU: 1 PID: 15997 Comm: syz-executor.3 Not tainted 6.3.0-rc3-syzkaller-00322-g4bdec23f971b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
 print_report mm/kasan/report.c:433 [inline]
 kasan_report+0xec/0x130 mm/kasan/report.c:536
 check_region_inline mm/kasan/generic.c:181 [inline]
 kasan_check_range+0x141/0x190 mm/kasan/generic.c:187
 instrument_atomic_read include/linux/instrumented.h:72 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 ida_free+0x218/0x2d0 lib/idr.c:511
 mnt_release_group_id fs/namespace.c:160 [inline]
 cleanup_group_ids+0x178/0x1e0 fs/namespace.c:2093
 do_mount_setattr fs/namespace.c:4188 [inline]
 __do_sys_mount_setattr+0x1017/0x1560 fs/namespace.c:4375
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f88d2c8c0f9
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:00007f88d3a5a168 EFLAGS: 00000246 ORIG_RAX: 00000000000001ba
RAX: ffffffffffffffda RBX: 00007f88d2dac050 RCX: 00007f88d2c8c0f9
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000004
RBP: 00007f88d2ce7b39 R08: 0000000000000020 R09: 0000000000000000
R10: 0000000020000140 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffecd79895f R14: 00007f88d3a5a300 R15: 0000000000022000
 </TASK>
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