Backtrace

general protection fault, probably for non-canonical address 0xffef8e2ea13511c0: 0000 [#1] SMP PTI
CPU: 3 PID: 158 Comm: kswapd0 Tainted: P           OE     5.12.8-300.fc34.x86_64 #1
Hardware name: Acer Nitro AN515-52/Freed_CFS, BIOS V1.28 08/05/2019
RIP: 0010:refill_obj_stock+0x3f/0xb0
Code: 49 89 c4 fa 66 0f 1f 44 00 00 48 c7 c5 60 75 02 00 65 48 03 2d 72 a6 cf 5e 48 39 7d 10 74 41 48 89 fb 48 89 ef e8 81 fe ff ff <48> 8b 03 a8 03 75 5e 65 48 ff 00 e8 f1 19 e4 ff 48 89 5d 10 31 c0
RSP: 0018:ffffa466c03d79e0 EFLAGS: 00010082
RAX: 00003634e1812fe0 RBX: ffef8e2ea13511c0 RCX: 0000000000000006
RDX: 0000000000000011 RSI: 0000000000000070 RDI: ffff8e31de2e7560
RBP: ffff8e31de2e7560 R08: 0000000000000090 R09: fffffffffffffffe
R10: ffff8e2ea71a3ed8 R11: 00000000000005e0 R12: 0000000000000212
R13: 0000000000000070 R14: ffff8e2e8123c800 R15: fffff414849cb600
FS:  0000000000000000(0000) GS:ffff8e31de2c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdf4451f010 CR3: 00000003d8a10002 CR4: 00000000003706e0
Call Trace:
 kmem_cache_free+0x2bf/0x450
 ? free_buffer_head+0x21/0x50
 free_buffer_head+0x21/0x50
 try_to_free_buffers+0x9a/0xe0
 jbd2_journal_try_to_free_buffers+0x10c/0x160
 ? try_to_unmap+0xa6/0xe0
 shrink_page_list+0xb13/0x1020
 shrink_inactive_list+0x132/0x3a0
 ? enqueue_entity+0x18c/0x7b0
 shrink_lruvec+0x497/0x6c0
 ? super_cache_count+0x79/0xf0
 shrink_node+0x2b3/0x6e0
 balance_pgdat+0x2fa/0x620
 kswapd+0x1e6/0x360
 ? finish_wait+0x80/0x80
 ? balance_pgdat+0x620/0x620
 kthread+0x11b/0x140
 ? kthread_associate_blkcg+0xa0/0xa0
 ret_from_fork+0x22/0x30
Modules linked in: snd_seq_dummy snd_hrtimer ccm rfcomm 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 nf_tables ebtable_nat ebtable_broute 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 nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter cmac bnep sunrpc vfat fat intel_rapl_msr intel_rapl_common snd_sof_pci_intel_cnl snd_sof_intel_hda_common soundwire_intel soundwire_generic_allocation soundwire_cadence snd_sof_intel_hda snd_sof_pci snd_sof snd_sof_xtensa_dsp snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_acpi_intel_match nvidia_drm(POE) snd_soc_acpi
 nvidia_modeset(POE) x86_pkg_temp_thermal intel_powerclamp iwlmvm snd_soc_core snd_hda_codec_realtek iTCO_wdt coretemp nvidia_uvm(POE) snd_hda_codec_generic intel_pmc_bxt snd_compress snd_pcm_dmaengine ledtrig_audio kvm_intel snd_hda_codec_hdmi mei_hdcp iTCO_vendor_support ac97_bus mac80211 snd_hda_intel kvm snd_usb_audio snd_intel_dspcfg snd_intel_sdw_acpi snd_hda_codec irqbypass libarc4 rapl uvcvideo snd_hda_core intel_cstate snd_usbmidi_lib snd_rawmidi videobuf2_vmalloc snd_hwdep videobuf2_memops btusb snd_seq videobuf2_v4l2 btrtl btbcm btintel videobuf2_common snd_seq_device iwlwifi nvidia(POE) intel_uncore snd_pcm videodev bluetooth intel_wmi_thunderbolt pcspkr acer_wmi sparse_keymap wmi_bmof i2c_i801 snd_timer mc cfg80211 i2c_smbus ecdh_generic snd joydev mei_me ecc soundcore mei idma64 rfkill intel_pch_thermal acpi_pad acer_wireless binfmt_misc zram ip_tables hid_logitech_hidpp hid_logitech_dj i915 hid_multitouch i2c_algo_bit drm_kms_helper rtsx_pci_sdmmc mmc_core cec
 crct10dif_pclmul crc32_pclmul crc32c_intel drm ghash_clmulni_intel r8169 rtsx_pci serio_raw i2c_hid_acpi i2c_hid wmi video pinctrl_cannonlake fuse