Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000009
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#2] SMP PTI
CPU: 1 PID: 21585 Comm: systemd-udevd Tainted: G      D           5.11.22-100.fc32.x86_64 #1
Hardware name: LENOVO 20245/INVALID, BIOS 7BCN21WW(V1.05) 04/18/2013
RIP: 0010:free_pipe_info+0x75/0xb0
Code: 74 39 31 db 48 63 c3 48 8d 14 80 48 8b 85 98 00 00 00 48 8d 34 d0 48 8b 46 10 48 85 c0 74 14 48 c7 46 10 00 00 00 00 48 89 ef <48> 8b 40 08 e8 d2 5b ac 00 83 c3 01 39 5d 5c 77 c9 48 8b bd 80 00
RSP: 0018:ffffaf7280ddfe90 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 000000000000000a RCX: 0000000000000000
RDX: 0000000000000032 RSI: ffff8fad27c3c190 RDI: ffff8fae26d593c0
RBP: ffff8fae26d593c0 R08: 0000000000000000 R09: ffff8faf1f3b2ac0
R10: 0000000000000010 R11: ffff8fadd316d910 R12: ffff8faf1f3b2ac0
R13: ffff8faf1f3b2b48 R14: ffff8fad1669c240 R15: 0000000000000000
FS:  00007f6441725b80(0000) GS:ffff8faf33240000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000009 CR3: 00000002fda96004 CR4: 00000000001706e0
Call Trace:
 pipe_release+0xff/0x110
 __fput+0x94/0x240
 task_work_run+0x65/0xa0
 exit_to_user_mode_prepare+0x181/0x190
 syscall_exit_to_user_mode+0x18/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f6442848a97
Code: ff e8 7d ea 01 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 41 c3 48 83 ec 18 89 7c 24 0c e8 83 43 f9 ff
RSP: 002b:00007ffdd68ac428 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 00007f6441725b00 RCX: 00007f6442848a97
RDX: 0000000000000000 RSI: 00005597f8344e60 RDI: 0000000000000006
RBP: 0000000000000006 R08: 00005597f8528bc0 R09: 0000000000000000
R10: 0000000000000010 R11: 0000000000000246 R12: 00005597f8341d80
R13: 00007ffdd68ac530 R14: 00007ffdd68ac528 R15: 0000000000000000
Modules linked in: uinput rfcomm rtsx_usb_sdmmc rtsx_usb_ms mmc_core memstick rtsx_usb xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_nat_tftp nf_conntrack_tftp tun 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 cmac bnep sunrpc vfat fat intel_rapl_msr intel_rapl_common snd_hda_codec_hdmi snd_hda_codec_conexant snd_hda_codec_generic ledtrig_audio x86_pkg_temp_thermal intel_powerclamp ath9k snd_hda_intel snd_intel_dspcfg ath9k_common coretemp ath9k_hw soundwire_intel kvm_intel soundwire_generic_allocation uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 kvm snd_soc_core
 videobuf2_common mac80211 videodev snd_compress mc snd_pcm_dmaengine soundwire_cadence irqbypass snd_hda_codec ath rapl cfg80211 snd_hda_core ac97_bus snd_hwdep ath3k snd_seq btusb btrtl snd_seq_device btbcm snd_pcm btintel intel_cstate snd_timer bluetooth ecdh_generic ecc snd intel_uncore iTCO_wdt intel_pmc_bxt iTCO_vendor_support mei_hdcp at24 libarc4 soundcore joydev ideapad_laptop platform_profile sparse_keymap rfkill mei_me mei lpc_ich pcspkr i2c_i801 i2c_smbus ip_tables i915 nouveau mxm_wmi wmi drm_ttm_helper ttm i2c_algo_bit crct10dif_pclmul drm_kms_helper crc32_pclmul crc32c_intel cec ghash_clmulni_intel drm serio_raw alx mdio video fuse
CR2: 0000000000000009