Backtrace

BUG: unable to handle page fault for address: 0000000200000000
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 0 P4D 0 
Oops: 0002 [#1] SMP PTI
CPU: 0 PID: 115 Comm: kswapd0 Tainted: G         CI       5.11.16-200.fc33.x86_64 #1
Hardware name: Microsoft Corporation Surface Pro 3/Surface Pro 3, BIOS 3.11.2650 04/30/2019
RIP: 0010:zs_free+0x1c/0x120
Code: 0b 0f 0b 0f 0b 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 85 f6 0f 84 09 01 00 00 41 56 41 55 41 54 55 48 89 f5 53 48 89 fb <f0> 48 0f ba 6d 00 00 0f 82 df 00 00 00 4c 8b 6d 00 4c 89 e8 48 c1
RSP: 0000:ffffad15809938c0 EFLAGS: 00010206
RAX: 0000000001000000 RBX: ffff9b5446676000 RCX: ffffad1581c288f8
RDX: ffffad1581c288f0 RSI: 0000000200000000 RDI: ffff9b5446676000
RBP: 0000000200000000 R08: 0000000000000600 R09: 0000000000000600
R10: 0000000000000200 R11: ffff9b5551dc6cd9 R12: 00000000000e278f
R13: 0000000000000000 R14: ffff9b5446cff000 R15: ffff9b5551dc6cd8
FS:  0000000000000000(0000) GS:ffff9b5587a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000200000000 CR3: 00000001723de004 CR4: 00000000001706f0
Call Trace:
 zram_free_page+0x7c/0xf0 [zram]
 zram_bvec_rw.constprop.0.isra.0+0x2b2/0x620 [zram]
 zram_rw_page+0x9c/0x110 [zram]
 bdev_write_page+0x81/0xd0
 ? swap_slot_free_notify+0xc0/0xc0
 __swap_writepage+0x8e/0x4e0
 ? __frontswap_store+0xab/0x130
 pageout+0xe6/0x2d0
 shrink_page_list+0xa86/0x1010
 shrink_inactive_list+0x132/0x3a0
 shrink_lruvec+0x4ae/0x6c0
 shrink_node+0x2ad/0x6f0
 balance_pgdat+0x2ff/0x620
 kswapd+0x1e6/0x360
 ? finish_wait+0x80/0x80
 ? balance_pgdat+0x620/0x620
 kthread+0x11b/0x140
 ? __kthread_bind_mask+0x60/0x60
 ret_from_fork+0x22/0x30
Modules linked in: uinput exfat xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp tun 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 nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter sunrpc vfat fat intel_rapl_msr intel_rapl_common snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio x86_pkg_temp_thermal snd_hda_codec_hdmi intel_powerclamp coretemp snd_hda_intel kvm_intel snd_intel_dspcfg iTCO_wdt mei_hdcp intel_pmc_bxt soundwire_intel soundwire_generic_allocation iTCO_vendor_support kvm snd_soc_core irqbypass snd_compress snd_pcm_dmaengine rapl r8188eu(C) intel_cstate soundwire_cadence intel_uncore
 snd_hda_codec lib80211 uvcvideo videobuf2_vmalloc videobuf2_memops hid_sensor_rotation hid_sensor_als videobuf2_v4l2 hid_sensor_gyro_3d hid_sensor_incl_3d hid_sensor_magn_3d cfg80211 videobuf2_common hid_sensor_accel_3d snd_hda_core hid_sensor_trigger hid_sensor_iio_common industrialio_triggered_buffer pcspkr kfifo_buf ac97_bus snd_hwdep videodev industrialio snd_seq i2c_i801 i2c_smbus snd_seq_device mei_me snd_pcm mei joydev snd_timer lpc_ich mc rfkill snd soundcore surfacepro3_button soc_button_array surface3_button dw_dmac zram ip_tables hid_multitouch i915 i2c_algo_bit drm_kms_helper uas cec usb_storage hid_sensor_hub crct10dif_pclmul crc32_pclmul crc32c_intel drm ghash_clmulni_intel video pinctrl_lynxpoint i2c_hid fuse
CR2: 0000000200000000