Error after load module e remove module xt_tls in centos 7 / 8 esxi 6.7

[krumsoftov]

After compiling and loading the module, everything works normally. After restarting, the module no longer works.

[ 82.079053] ------------[ cut here ]------------
[ 82.079074] proc_dir_entry 'net/xt_tls' already registered
[ 82.079100] WARNING: CPU: 2 PID: 1440 at fs/proc/generic.c:360 proc_register+0xf9/0x130
[ 82.079125] Modules linked in: xt_tls(OE+) nft_counter nft_compat nf_tables libcrc32c nfnetlink intel_rapl_msr intel_rapl_common sb_edac crct10dif_pclmul crc32_pclmul pcspkr vmwgfx ghash_clmulni_intel rapl joydev vmw_balloon ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm vmw_vmci i2c_piix4 ip_tables ext4 mbcache jbd2 sr_mod cdrom ata_generic sd_mod t10_pi sg ahci crc32c_intel serio_raw libahci ata_piix vmxnet3 libata vmw_pvscsi [last unloaded: xt_tls]
[ 82.079252] CPU: 2 PID: 1440 Comm: modprobe Kdump: loaded Tainted: G OE --------- - - 4.18.0-348.7.1.el8_5.x86_64 #1
[ 82.079286] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 12/12/2018
[ 82.079318] RIP: 0010:proc_register+0xf9/0x130
[ 82.079333] Code: c6 05 62 c2 d8 01 00 48 89 d8 5b 5d 41 5c 41 5d 41 5e c3 49 8b b4 24 a0 00 00 00 4c 89 f2 48 c7 c7 80 9d af b6 e8 20 20 d3 ff <0f> 0b c6 05 36 c2 d8 01 00 8b 43 5c 48 c7 c7 a0 7c 11 b7 8d b0 00
[ 82.079386] RSP: 0018:ffffaf5ec16d7bd0 EFLAGS: 00010286
[ 82.079403] RAX: 0000000000000000 RBX: ffff97a807bc7300 RCX: 0000000000000007
[ 82.079425] RDX: 0000000000000007 RSI: 0000000000000092 RDI: ffff97a937d16850
[ 82.079446] RBP: ffff97a825abcf88 R08: 0000000000000534 R09: 0000000000aaaaaa
[ 82.079468] R10: 0000000000000000 R11: ffffaf5ec29df020 R12: ffff97a801366c00
[ 82.079489] R13: ffff97a801366c80 R14: ffff97a807bc73ab R15: 0000000000000000
[ 82.079524] FS: 00007f68fc3f3740(0000) GS:ffff97a937d00000(0000) knlGS:0000000000000000
[ 82.079549] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 82.079567] CR2: 00007f68fb3a38c0 CR3: 0000000104314004 CR4: 00000000001706e0
[ 82.079619] Call Trace:
[ 82.079634] proc_mkdir_data+0x5d/0x80
[ 82.079649] tls_net_init+0x18/0x50 [xt_tls]
[ 82.079666] ops_init+0x3a/0x100
[ 82.079680] register_pernet_operations+0x114/0x210
[ 82.079697] ? 0xffffffffc06b2000
[ 82.079710] register_pernet_subsys+0x24/0x40
[ 82.079726] tls_mt_init+0x2d/0x1000 [xt_tls]
[ 82.079743] do_one_initcall+0x46/0x1d0
[ 82.079757] ? do_init_module+0x22/0x220
[ 82.079774] ? kmem_cache_alloc_trace+0x131/0x270
[ 82.079803] do_init_module+0x5a/0x220
[ 82.079816] load_module+0x14c5/0x17f0
[ 82.079831] ? __do_sys_finit_module+0xa8/0x110
[ 82.079846] __do_sys_finit_module+0xa8/0x110
[ 82.079862] do_syscall_64+0x5b/0x1a0
[ 82.080655] entry_SYSCALL_64_after_hwframe+0x65/0xca
[ 82.081420] RIP: 0033:0x7f68fb3c952d
[ 82.082183] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 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 8b 0d 2b 79 2c 00 f7 d8 64 89 01 48
[ 82.083770] RSP: 002b:00007ffcb494de98 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 82.084555] RAX: ffffffffffffffda RBX: 0000563f72723db0 RCX: 00007f68fb3c952d
[ 82.085364] RDX: 0000000000000000 RSI: 0000563f707897b6 RDI: 0000000000000003
[ 82.086149] RBP: 0000563f707897b6 R08: 0000000000000000 R09: 0000563f72725770
[ 82.086947] R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000
[ 82.087752] R13: 0000563f72723e30 R14: 0000000000040000 R15: 0000000000000000
[ 82.088582] ---[ end trace f5888c69076e38ca ]---

[krumsoftov]

@Lochnair I tested all versions of Centos 7 to 8 AND all versions of Redhat 7 to 8, all same Bug.