Backtrace

WARNING: CPU: 3 PID: 5034 at block/bfq-iosched.c:606 bfqq_request_over_limit+0x31f/0x380
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 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 rfkill ip_set nf_tables nfnetlink ip6table_filter ip6_tables iptable_filter sunrpc iTCO_wdt intel_pmc_bxt ppdev at24 iTCO_vendor_support gpio_ich intel_powerclamp coretemp kvm_intel kvm snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic irqbypass intel_cstate dell_wmi snd_hda_intel snd_intel_dspcfg intel_uncore ledtrig_audio dell_smbios snd_intel_sdw_acpi dcdbas snd_hda_codec snd_hda_core snd_hwdep snd_seq snd_seq_device snd_pcm sparse_keymap video dell_wmi_descriptor wmi_bmof
 pcspkr i2c_i801 i2c_smbus snd_timer lpc_ich parport_pc snd soundcore parport acpi_cpufreq zram ip_tables amdgpu iommu_v2 gpu_sched radeon raid1 i2c_algo_bit drm_ttm_helper ttm crct10dif_pclmul drm_kms_helper crc32_pclmul crc32c_intel cec serio_raw drm ghash_clmulni_intel e1000e wmi ipmi_devintf ipmi_msghandler fuse
CPU: 3 PID: 5034 Comm: IndexedDB #25 Not tainted 5.17.4-100.fc34.x86_64 #1
Hardware name: Dell Inc. OptiPlex 980                 /0C522T, BIOS A05 11/03/2010
RIP: 0010:bfqq_request_over_limit+0x31f/0x380
Code: 8b 7c 24 08 e8 52 77 bb ff 58 e8 1c 29 b2 ff 48 8d 5c 24 28 e9 ca fe ff ff 44 8b 6c 24 24 41 39 f5 0f 84 28 fe ff ff 41 89 f5 <0f> 0b e9 08 fe ff ff 4c 8d a4 24 a8 00 00 00 44 89 c1 be 10 00 00
RSP: 0018:ffffb95b090af8f0 EFLAGS: 00010002
RAX: 0000000000000005 RBX: 0000000000000030 RCX: ffffb95b090af918
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff9b248be59430
RBP: ffff9b24c28a7a80 R08: ffff9b2483f7f8c0 R09: ffff9b24829be388
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000006
R13: 0000000000000004 R14: ffff9b24ac619098 R15: 0000000000000001
FS:  00007f56f5ff0640(0000) GS:ffff9b278fcc0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd43fc790e0 CR3: 0000000168bf6004 CR4: 00000000000206e0
Call Trace:
 <TASK>
 ? __sbitmap_get_word+0x30/0x80
 ? sbitmap_get_shallow+0x89/0x180
 bfq_limit_depth+0x125/0x1d0
 __blk_mq_alloc_requests+0x23b/0x2a0
 blk_mq_submit_bio+0x3da/0x640
 submit_bio_noacct+0x232/0x280
 flush_bio_list+0x48/0xe0 [raid1]
 raid1_unplug+0xb5/0xd0 [raid1]
 blk_flush_plug+0xcb/0x120
 blk_finish_plug+0x21/0x30
 ext4_writepages+0xad4/0x1050
 ? ext4_fc_commit+0x130/0x7e0
 ? __ext4_journal_stop+0x37/0xa0
 ? __mark_inode_dirty+0x126/0x350
 do_writepages+0xbf/0x1b0
 filemap_fdatawrite_wbc+0x62/0x90
 file_write_and_wait_range+0x78/0xc0
 ext4_sync_file+0x73/0x370
 __x64_sys_fsync+0x33/0x60
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f57328faebb
Code: 4a 00 00 00 0f 05 48 3d 00 f0 ff ff 77 41 c3 48 83 ec 18 89 7c 24 0c e8 53 f7 ff ff 8b 7c 24 0c 41 89 c0 b8 4a 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 b1 f7 ff ff 8b 44
RSP: 002b:00007f56f5feeab0 EFLAGS: 00000293 ORIG_RAX: 000000000000004a
RAX: ffffffffffffffda RBX: 00007f56d241fba0 RCX: 00007f57328faebb
RDX: 0000000000000002 RSI: 0000000000000002 RDI: 0000000000000077
RBP: 000000000000022f R08: 0000000000000000 R09: 00007f572e2d3840
R10: 00007fffe47cf080 R11: 0000000000000293 R12: 0000000000000002
R13: 0000000000000010 R14: 00007f56f0905c00 R15: 00007f56e6ee72e0
 </TASK>