Backtrace

BUG: unable to handle page fault for address: 00007ffec3affc30
#PF: supervisor read access in kernel mode
#PF: error_code(0x0001) - permissions violation
PGD 1c09dd067 P4D 1c09dd067 PUD 1c08f6067 PMD 1e5161067 PTE 8000000132724867
Oops: 0001 [#13] SMP NOPTI
CPU: 5 PID: 9091 Comm: test Tainted: G      D W  OE     5.12.8-300.fc34.x86_64 #1
Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/22/2020
RIP: 0010:string+0x49/0xd0
Code: ff 77 36 45 89 d1 31 f6 49 01 f9 66 45 85 d2 75 19 eb 1e 49 39 f8 76 02 88 07 48 83 c7 01 83 c6 01 48 83 c2 01 4c 39 cf 74 07 <0f> b6 02 84 c0 75 e2 4c 89 c2 e9 b8 ee ff ff 48 c7 c0 90 8c 41 b7
RSP: 0018:ffffa31b874ffd20 EFLAGS: 00010086
RAX: 00007ffec3afec30 RBX: ffffa31b874ffdb8 RCX: ffff0a00ffffff04
RDX: 00007ffec3affc30 RSI: 0000000000000000 RDI: ffffa31b874ffdf2
RBP: ffffffffc087c0a8 R08: ffffa31b874ffdf8 R09: ffffa31c874ffdf1
R10: ffffffffffffffff R11: 0000000000000000 R12: ffffa31b874ffdf8
R13: ffffffffc087c0a8 R14: 0000000000000008 R15: ffffa31b874ffdf2
FS:  00007ff1a9e30580(0000) GS:ffff8d8b75d40000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffec3affc30 CR3: 00000001ba28c000 CR4: 0000000000350ee0
Call Trace:
 vsnprintf+0x21d/0x550
 vprintk_store+0xaa/0x430
 ? __wake_up_common_lock+0x7a/0x90
 ? file_tty_write.constprop.0+0x241/0x310
 vprintk_emit+0xe6/0x260
 printk+0x48/0x4a
 DriverWrite+0x11/0xea9 [charMsgModuel]
 vfs_write+0xbf/0x270
 ksys_write+0x4f/0xc0
 do_syscall_64+0x33/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7ff1a9d51387
Code: 0d 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
RSP: 002b:00007ffec3affc28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000401310 RCX: 00007ff1a9d51387
RDX: 0000000000000003 RSI: 00007ffec3affc30 RDI: 0000000000000003
RBP: 00007ffec3b00040 R08: 000000000000001f R09: 00007ffec3aff6f0
R10: 00007ff1a9c75118 R11: 0000000000000246 R12: 00000000004010e0
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in: charMsgModuel(OE) uinput rfcomm snd_seq_dummy snd_hrtimer xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp bridge stp llc tun nft_objref nf_conntrack_netbios_ns nf_conntrack_broadcast nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 iptable_mangle iptable_raw iptable_security ip_set nf_tables snd_seq_midi snd_seq_midi_event nfnetlink ip6table_filter ip6_tables iptable_filter bnep vsock_loopback vmw_vsock_virtio_transport_common vmw_vsock_vmci_transport vsock sunrpc snd_ens1371 snd_ac97_codec ac97_bus snd_rawmidi snd_seq snd_seq_device btusb snd_pcm btrtl intel_rapl_msr btbcm intel_rapl_common btintel vmw_balloon bluetooth snd_timer snd rapl soundcore ecdh_generic rfkill gameport pcspkr ecc joydev i2c_piix4 vmw_vmci zram ip_tables
 crct10dif_pclmul crc32_pclmul crc32c_intel vmwgfx ghash_clmulni_intel drm_kms_helper serio_raw cec ttm drm mptspi scsi_transport_spi mptscsih e1000 mptbase ata_generic pata_acpi fuse [last unloaded: charMsgModuel]
CR2: 00007ffec3affc30