Backtrace

kernel BUG at mm/shmem.c:940!
invalid opcode: 0000 [#1] SMP PTI
CPU: 0 PID: 1169 Comm: Xorg Tainted: G           OE     5.11.16-300.fc34.x86_64 #1
Hardware name: Dell Inc. OptiPlex 755                 /0PU052, BIOS A22 06/11/2012
RIP: 0010:shmem_undo_range+0x344/0x7a0
Code: 66 90 fb 66 66 90 66 66 90 48 81 c4 48 01 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f c3 48 c7 c6 30 15 3c 8b 4c 89 ff e8 cc 4f 01 00 <0f> 0b 49 8b 17 49 8b 47 20 f7 c2 00 00 01 00 0f 84 d9 fd ff ff 41
RSP: 0018:ffffab0f82933ca8 EFLAGS: 00010286
RAX: 000000000000001e RBX: ffffffffffffffff RCX: 0000000000000027
RDX: ffff95db23e18ac8 RSI: 0000000000000001 RDI: ffff95db23e18ac0
RBP: ffffab0f82933d70 R08: 0000000000000000 R09: ffffab0f82933ae0
R10: ffffab0f82933ad8 R11: ffffffff8bb44f08 R12: ffffab0f82933cf8
R13: 00000000000004a5 R14: 0000000000000004 R15: ffffdb81016fa640
FS:  00007ff2926f2a80(0000) GS:ffff95db23e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff28185c000 CR3: 00000000013e2000 CR4: 00000000000026f0
Call Trace:
 shmem_evict_inode+0xd8/0x240
 ? var_wake_function+0x20/0x20
 evict+0xd1/0x180
 __dentry_kill+0xe1/0x180
 __fput+0xe3/0x240
 task_work_run+0x65/0xa0
 exit_to_user_mode_prepare+0x181/0x1b0
 syscall_exit_to_user_mode+0x18/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7ff292f528fb
Code: 77 05 c3 0f 1f 40 00 48 8b 15 71 05 0c 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff c3 0f 1f 40 00 f3 0f 1e fa b8 43 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 41 05 0c 00 f7 d8
RSP: 002b:00007ffdfcf93cc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000043
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff292f528fb
RDX: 0000000000000029 RSI: 0000000005200002 RDI: 00007ff28387a000
RBP: 00005601d7f5c700 R08: 00005601d801d580 R09: 000000000000803f
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000000
R13: 00005601d60cc040 R14: 00007ffdfcf949ec R15: 0000000000000000
Modules linked in: snd_seq_dummy snd_hrtimer 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 vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) sunrpc squashfs loop snd_hda_codec_analog snd_hda_codec_generic ledtrig_audio snd_hda_intel snd_intel_dspcfg soundwire_intel soundwire_generic_allocation snd_soc_core snd_compress snd_pcm_dmaengine soundwire_cadence snd_hda_codec coretemp snd_hda_core ac97_bus kvm_intel snd_hwdep snd_seq joydev snd_seq_device kvm snd_pcm snd_timer snd irqbypass iTCO_wdt dcdbas soundcore at24 intel_pmc_bxt iTCO_vendor_support ppdev mei_wdt i2c_i801 pcspkr i2c_smbus mei_me parport_pc lpc_ich
 mei parport acpi_cpufreq zram ip_tables i915 video i2c_algo_bit hid_logitech_hidpp drm_kms_helper cec drm e1000e uas serio_raw ata_generic usb_storage pata_acpi hid_logitech_dj fuse