Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000018
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 8000000193538067 P4D 8000000193538067 PUD 0 
Oops: 0000 [#1] PREEMPT SMP PTI
CPU: 0 PID: 2007 Comm: IPC I/O Parent Not tainted 6.2.15-100.fc36.x86_64 #1
Hardware name: Notebook                         N130BU/N130BU, BIOS 1.05.02 01/16/2017
RIP: 0010:kill_fasync+0x74/0xa0
Code: 00 00 00 85 c0 74 0f 8b 73 0c 48 83 c7 70 44 89 ea e8 80 fe ff ff 48 89 df 48 89 ee e8 45 7b b1 00 48 8b 5b 10 48 85 db 74 15 <81> 7b 08 01 46 00 00 74 b0 48 c7 c7 78 17 89 95 e8 07 cb d3 ff 5b
RSP: 0018:ffffb1f084453ca8 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000010 RCX: 0000000000000000
RDX: ffffa0a29f088000 RSI: 000000000000001d RDI: ffffa0a2a2636b08
RBP: ffffa0a2cb897800 R08: ffffa0a2a2636a90 R09: 000000002c13c01d
R10: 0000000000000008 R11: ffffa0a2893544a0 R12: 000000000000001d
R13: 0000000000000001 R14: ffffd7f3453c6a00 R15: ffffa0a2a2636a80
FS:  00007f94405d5640(0000) GS:ffffa0a5f4200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000018 CR3: 0000000155124001 CR4: 00000000003706f0
Call Trace:
 <TASK>
 pipe_write+0xbb/0x6c0
 vfs_write+0x36d/0x400
 ksys_write+0xb7/0xf0
 do_syscall_64+0x58/0x80
 ? syscall_exit_to_user_mode+0x17/0x40
 ? do_syscall_64+0x67/0x80
 ? syscall_exit_to_user_mode+0x17/0x40
 ? do_syscall_64+0x67/0x80
 ? __sys_recvmsg+0xa7/0xc0
 ? syscall_exit_to_user_mode+0x17/0x40
 ? do_syscall_64+0x67/0x80
 entry_SYSCALL_64_after_hwframe+0x72/0xdc
RIP: 0033:0x7f945e101c6f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 09 76 f8 ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 5c 76 f8 ff 48
RSP: 002b:00007f94405d4290 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f93f45bf900 RCX: 00007f945e101c6f
RDX: 0000000000000001 RSI: 00007f94405d42c7 RDI: 0000000000000021
RBP: 00007f93f45bf900 R08: 0000000000000000 R09: 00007f945e300d00
R10: 000054fbcdf2638e R11: 0000000000000293 R12: 00007f945df55c00
R13: 0000000000000000 R14: 00007f945df55d60 R15: 00007f945df55d60
 </TASK>
Modules linked in: uinput snd_seq_dummy snd_hrtimer 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_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set nf_tables nfnetlink qrtr snd_sof_pci_intel_skl snd_sof_intel_hda_common soundwire_intel soundwire_generic_allocation soundwire_cadence snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp snd_sof sunrpc snd_sof_utils soundwire_bus snd_soc_avs snd_soc_hda_codec snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_acpi_intel_match intel_rapl_msr snd_soc_acpi intel_rapl_common snd_hda_codec_hdmi snd_soc_core intel_tcc_cooling x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek binfmt_misc coretemp snd_compress snd_hda_codec_generic ac97_bus ledtrig_audio iTCO_wdt snd_pcm_dmaengine intel_pmc_bxt mei_pxp kvm_intel snd_hda_intel mei_hdcp iwlmvm ee1004
 iTCO_vendor_support snd_intel_dspcfg snd_intel_sdw_acpi btusb mac80211 snd_hda_codec btrtl kvm libarc4 uvcvideo iwlwifi btbcm snd_hda_core videobuf2_vmalloc irqbypass rapl intel_cstate videobuf2_memops videobuf2_v4l2 intel_uncore btintel snd_hwdep videobuf2_common btmtk intel_wmi_thunderbolt videodev cfg80211 bluetooth snd_seq mc snd_seq_device joydev pcspkr snd_pcm rfkill snd_timer mei_me mei snd intel_xhci_usb_role_switch i2c_i801 intel_pch_thermal soundcore i2c_smbus acpi_pad zram i915 rtsx_pci_sdmmc mmc_core crct10dif_pclmul crc32_pclmul crc32c_intel polyval_clmulni polyval_generic ghash_clmulni_intel sha512_ssse3 drm_buddy drm_display_helper serio_raw r8169 rtsx_pci cec ttm video wmi ip6_tables ip_tables fuse
CR2: 0000000000000018