Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000110
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] SMP PTI
CPU: 1 PID: 7 Comm: kworker/u8:0 Not tainted 5.11.12-300.fc34.x86_64 #1
Hardware name: TOSHIBA Satellite A505/Portable PC, BIOS 1.70 09/15/2009
Workqueue: btrfs-delalloc btrfs_work_helper
RIP: 0010:ZSTD_compressBlock_fast+0xd6c/0x1090
Code: 48 0f 42 c8 31 c0 48 c1 e1 03 48 8b 54 05 00 48 89 14 06 48 83 c0 08 48 39 c8 75 ee 49 8b 84 24 10 01 00 00 31 d2 66 89 50 04 <49> 8b 84 24 10 01 00 00 c7 00 01 00 00 00 49 81 f8 ff ff 00 00 0f
RSP: 0018:ffffa03d8005fae0 EFLAGS: 00010246
RAX: ffff901406e51c04 RBX: ffff901406e42e88 RCX: 0000000000000008
RDX: 0000000000000000 RSI: ffff901406ea6b0c RDI: 000000000000001d
RBP: ffff901406e13cf9 R08: 000000000000001a R09: cf1bbcdcbf9b0000
R10: ffff901406e13ce4 R11: ffff901406e22870 R12: ffff901406e000d8
R13: 000000000000007f R14: ffff901406e02878 R15: ffff901406e22870
FS:  0000000000000000(0000) GS:ffff90143bc80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000110 CR3: 000000000d35a000 CR4: 00000000000406e0
Call Trace:
 ZSTD_compressBlock_internal+0x9e/0x110
 ZSTD_compressContinue_internal+0x1d7/0x470
 ZSTD_compressStream+0x248/0x2f0
 zstd_compress_pages+0x19c/0x5e0
 btrfs_compress_pages+0xdb/0xe0
 compress_file_range+0x295/0x800
 async_cow_start+0x12/0x30
 ? submit_compressed_extents+0x3f0/0x3f0
 btrfs_work_helper+0xe1/0x310
 process_one_work+0x1ec/0x380
 worker_thread+0x53/0x3e0
 ? process_one_work+0x380/0x380
 kthread+0x11b/0x140
 ? kthread_associate_blkcg+0xa0/0xa0
 ret_from_fork+0x22/0x30
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 ccm 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 uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common videodev iTCO_wdt mc intel_pmc_bxt snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi snd_hda_intel snd_intel_dspcfg soundwire_intel soundwire_generic_allocation rtl8192se snd_soc_core rtl_pci rtlwifi snd_compress snd_pcm_dmaengine soundwire_cadence mac80211 snd_hda_codec iTCO_vendor_support at24 snd_hda_core
 ac97_bus snd_hwdep snd_seq cfg80211 i2c_i801 coretemp toshiba_acpi snd_seq_device i2c_smbus joydev pcspkr sparse_keymap libarc4 snd_pcm industrialio toshiba_haps rfkill snd_timer snd soundcore acpi_cpufreq lpc_ich zram ip_tables nouveau sdhci_pci cqhci sdhci mxm_wmi wmi i2c_algo_bit drm_ttm_helper ttm drm_kms_helper firewire_ohci cec serio_raw mmc_core drm r8169 firewire_core crc_itu_t video sunrpc be2iscsi bnx2i cnic uio cxgb4i cxgb4 tls cxgb3i cxgb3 mdio libcxgbi libcxgb qla4xxx iscsi_boot_sysfs iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi fuse
CR2: 0000000000000110