A null-dereference crash occurred in map_id_down()

Issue

• A null-dereference crash occurred in map_id_down()

[8276006.213650] BUG: unable to handle kernel NULL pointer dereference at           (null)
[8276006.213865] IP: [<ffffffffa1133936>] map_id_down+0x6/0x80
[8276006.214053] PGD 250fcc067 PUD 220386067 PMD 0 
[8276006.214215] Oops: 0000 [#1] SMP 
[8276006.214371] Modules linked in: nfsd auth_rpcgss nfsv3 nfs_acl nfs lockd grace fscache tcp_diag inet_diag team_mode_activebackup team sunrpc iTCO_wdt iTCO_vendor_support skx_edac coretemp intel_rapl iosf_mbi kvm irqbypass crc32_pclmul ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd pcspkr ses enclosure scsi_transport_sas sg cdc_ether usbnet mii mei_me mei lpc_ich i2c_i801 wmi ipmi_si ipmi_devintf ipmi_msghandler tpm_crb acpi_power_meter onload(OE) sfc_char(OE) binfmt_misc sfc_resource(OE) sfc_affinity(OE) ip_tables ext4 mbcache jbd2 sd_mod crc_t10dif crct10dif_generic mgag200 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm crct10dif_pclmul crct10dif_common ahci sfc(OE) crc32c_intel drm i40e libahci megaraid_sas libata mdio mtd ptp pps_core
[8276006.215771]  drm_panel_orientation_quirks nfit libnvdimm dm_mirror dm_region_hash dm_log dm_mod
[8276006.216052] CPU: 5 PID: 241069 Comm: server_analytic Kdump: loaded Tainted: G           OE  ------------   3.10.0-1160.21.1.el7.x86_64 #1
[8276006.216651] Hardware name: Lenovo ThinkSystem SR650 -[7X06CTO1WW]-/-[7X06CTO1WW]-, BIOS -[IVE168I-2.90]- 01/21/2021
[8276006.216981] task: ffff9650ed7fa100 ti: ffff96b09b3d0000 task.ti: ffff96b09b3d0000
[8276006.217321] RIP: 0010:[<ffffffffa1133936>]  [<ffffffffa1133936>] map_id_down+0x6/0x80
[8276006.217674] RSP: 0018:ffff96b09b3d3d78  EFLAGS: 00010246
[8276006.218029] RAX: 0000000000000001 RBX: ffff96b152b84db0 RCX: 0000000200000000
[8276006.218395] RDX: 0000000100000000 RSI: 0000000000000000 RDI: 0000000000000000
[8276006.218766] RBP: ffff96b09b3d3d88 R08: 0000000000000000 R09: ffffe5fd2d4f705c
[8276006.219142] R10: ffff96b152fde000 R11: 0000000000000000 R12: ffff965021bd5740
[8276006.219520] R13: ffff96b152b84d00 R14: 0000000000000000 R15: 0000000000000000
[8276006.219902] FS:  00007f41b76dc740(0000) GS:ffff96acfe140000(0000) knlGS:0000000000000000
[8276006.220297] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[8276006.220694] CR2: 0000000000000000 CR3: 00000002f63ca000 CR4: 00000000007607e0
[8276006.221104] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[8276006.221515] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[8276006.221927] PKRU: 55555554
[8276006.222341] Call Trace:
[8276006.222756]  [<ffffffffa1133a3e>] ? make_kuid+0xe/0x10
[8276006.223183]  [<ffffffffa130695d>] cap_bprm_set_creds+0xad/0x670
[8276006.223615]  [<ffffffffa13139d8>] selinux_bprm_set_creds+0x38/0x2c0
[8276006.224052]  [<ffffffffa13083d9>] security_bprm_set_creds+0x19/0x20
[8276006.224494]  [<ffffffffa1254dbf>] prepare_binprm+0x9f/0x270
[8276006.224940]  [<ffffffffa12566a5>] do_execve_common.isra.24+0x555/0x880
[8276006.225391]  [<ffffffffa125fe00>] ? getname_flags+0x100/0x1a0
[8276006.225846]  [<ffffffffa1256c79>] SyS_execve+0x29/0x30
[8276006.226304]  [<ffffffffa1796538>] stub_execve+0x48/0x80
[8276006.226764] Code: 00 00 00 48 c7 c7 69 fe a7 a1 e8 c6 79 f6 ff c6 05 7f cd bf 00 01 e9 f7 fd ff ff 0f 0b 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 <44> 8b 0f 48 89 e5 45 85 c9 b8 ff ff ff ff 74 3c 8b 4f 04 39 ce 
[8276006.227783] RIP  [<ffffffffa1133936>] map_id_down+0x6/0x80
[8276006.228290]  RSP <ffff96b09b3d3d78>
[8276006.228795] CR2: 0000000000000000