RHEL8 gets crash at is_mem_section_removable() while running the lsmem command.

Issue

• The system is getting crash while running the lsmem command.
• Also, this is reproducible while running the sosreport command as it invokes the lsmem command.

[  529.110591] BUG: unable to handle kernel paging request at 0000000000001770
[  529.110638] PGD 0 P4D 0 
[  529.110656] Oops: 0000 [#1] SMP NOPTI
[  529.110678] CPU: 444 PID: 38449 Comm: lsmem Kdump: loaded Tainted: P            E    --------- -t - 4.18.0-305.62.1.el8_4.x86_64 #1
[  529.110775] RIP: 0010:is_mem_section_removable+0x41/0x140
..
[  529.111224] Call Trace:
[  529.111245]  removable_show+0x70/0xa0
[  529.111268]  dev_attr_show+0x1c/0x40
[  529.111289]  sysfs_kf_seq_show+0x9b/0x100
[  529.111317]  seq_read+0x163/0x420
[  529.111336]  vfs_read+0x91/0x140
[  529.111353]  ksys_read+0x4f/0xb0