Backtrace

list_del corruption. prev->next should be ffff9f52719e94d0, but was 719e94d0ffff9f52
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kernel BUG at lib/list_debug.c:51!
invalid opcode: 0000 [#1] SMP NOPTI
CPU: 0 PID: 2300 Comm: gnome-clocks Not tainted 5.13.9-200.fc34.x86_64 #1
Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
RIP: 0010:__list_del_entry_valid.cold+0x31/0x47
Code: 39 62 bd e8 72 27 fe ff 0f 0b 48 c7 c7 38 3a 62 bd e8 64 27 fe ff 0f 0b 48 89 f2 48 89 fe 48 c7 c7 f8 39 62 bd e8 50 27 fe ff <0f> 0b 48 89 fe 4c 89 c2 48 c7 c7 c0 39 62 bd e8 3c 27 fe ff 0f 0b
RSP: 0018:ffffba9e84aafd68 EFLAGS: 00010286
RAX: 0000000000000054 RBX: ffff9f52883d9838 RCX: 0000000000000000
RDX: ffff9f5357c26840 RSI: ffff9f5357c18a00 RDI: ffff9f5357c18a00
RBP: ffff9f52883cd5d8 R08: 0000000000000000 R09: ffffba9e84aafba8
R10: ffffba9e84aafba0 R11: ffffffffbdd468c8 R12: ffff9f52719e94d0
R13: ffff9f52883d9848 R14: ffff9f52883cd5d8 R15: ffff9f52719e94c0
FS:  0000000000000000(0000) GS:ffff9f5357c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb5f206d944 CR3: 00000000dac10006 CR4: 00000000000706f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 unlink_anon_vmas+0x41/0x1e0
 free_pgtables+0x93/0x100
 exit_mmap+0x9d/0x1a0
 mmput+0x61/0x140
 do_exit+0x2fe/0xab0
 ? handle_mm_fault+0xd5/0x2b0
 do_group_exit+0x33/0xa0
 __x64_sys_exit_group+0x14/0x20
 do_syscall_64+0x40/0x80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fb5f215a021
Code: Unable to access opcode bytes at RIP 0x7fb5f2159ff7.
RSP: 002b:00007ffea464f1f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fb5f2252470 RCX: 00007fb5f215a021
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffffffffff88 R09: 0000000000000000
R10: 00007fb5f20a0468 R11: 0000000000000246 R12: 00007fb5f2252470
R13: 0000000000000003 R14: 00007fb5f2252948 R15: 0000000000000000
Modules linked in: uinput snd_seq_dummy snd_hrtimer xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp bridge stp llc 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 rfkill nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter sunrpc snd_intel8x0 snd_ac97_codec ac97_bus snd_seq snd_seq_device intel_rapl_msr snd_pcm intel_rapl_common intel_powerclamp rapl joydev snd_timer snd vboxguest pcspkr i2c_piix4 soundcore zram ip_tables vmwgfx drm_kms_helper cec ttm drm crct10dif_pclmul crc32_pclmul crc32c_intel e1000 ghash_clmulni_intel serio_raw ata_generic pata_acpi video fuse