Backtrace

WARNING: CPU: 6 PID: 1049 at kernel/workqueue.c:2966 check_flush_dependency+0x11f/0x140
Modules linked in: 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 rfkill ip_set nf_tables nfnetlink qrtr sunrpc binfmt_misc intel_rapl_msr intel_rapl_common kvm_amd ccp snd_hda_codec_generic snd_hda_intel snd_intel_dspcfg kvm snd_intel_sdw_acpi snd_hda_codec snd_hda_core snd_hwdep irqbypass pktcdvd snd_seq snd_seq_device iTCO_wdt intel_pmc_bxt snd_pcm iTCO_vendor_support i2c_i801 i2c_smbus pcspkr snd_timer virtio_balloon lpc_ich snd soundcore joydev loop zram crct10dif_pclmul crc32_pclmul crc32c_intel polyval_clmulni polyval_generic ghash_clmulni_intel virtio_net sha512_ssse3 virtio_scsi sha256_ssse3 net_failover sha1_ssse3 qxl failover virtio_console drm_ttm_helper ttm serio_raw ip6_tables ip_tables fuse qemu_fw_cfg
CPU: 6 PID: 1049 Comm: kworker/u21:4 Not tainted 6.8.7-200.fc39.x86_64 #1
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.16.2-0-gea1b7a073390-prebuilt.qemu.org 04/01/2014
Workqueue: ttm ttm_bo_delayed_delete [ttm]
RIP: 0010:check_flush_dependency+0x11f/0x140
Code: 8b 45 18 48 8d b2 b0 00 00 00 49 89 e8 48 8d 8b b0 00 00 00 48 c7 c7 70 0e b2 a7 c6 05 80 6c 59 02 01 48 89 c2 e8 51 9c fd ff <0f> 0b e9 fc fe ff ff 80 3d 6b 6c 59 02 00 75 93 e9 2a ff ff ff 66
RSP: 0018:ffffba4f812bfcc0 EFLAGS: 00010082
RAX: 0000000000000000 RBX: ffff929ac0050e00 RCX: 0000000000000027
RDX: ffff929b3bda18c8 RSI: 0000000000000001 RDI: ffff929b3bda18c0
RBP: ffffffffc06905a0 R08: 0000000000000000 R09: ffffba4f812bfb50
R10: ffffba4f812bfb48 R11: 0000000000000003 R12: ffff929ac67a8000
R13: ffff929ac55bbcc0 R14: 0000000000000001 R15: ffff929b3bd34100
FS:  0000000000000000(0000) GS:ffff929b3bd80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f23c7cf9900 CR3: 0000000057422000 CR4: 0000000000750ef0
PKRU: 55555554
Call Trace:
 <TASK>
 ? check_flush_dependency+0x11f/0x140
 ? __warn+0x81/0x130
 ? check_flush_dependency+0x11f/0x140
 ? report_bug+0x171/0x1a0
 ? srso_alias_return_thunk+0x5/0xfbef5
 ? console_unlock+0x78/0x120
 ? handle_bug+0x3c/0x80
 ? exc_invalid_op+0x17/0x70
 ? asm_exc_invalid_op+0x1a/0x20
 ? __pfx_qxl_gc_work+0x10/0x10 [qxl]
 ? check_flush_dependency+0x11f/0x140
 __flush_work.isra.0+0xd0/0x280
 qxl_queue_garbage_collect+0x83/0x90 [qxl]
 qxl_fence_wait+0xa4/0x1a0 [qxl]
 dma_fence_wait_timeout+0x65/0x130
 dma_resv_wait_timeout+0x7f/0xe0
 ttm_bo_delayed_delete+0x2a/0x80 [ttm]
 process_one_work+0x174/0x340
 worker_thread+0x27b/0x3a0
 ? __pfx_worker_thread+0x10/0x10
 kthread+0xe8/0x120
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x34/0x50
 ? __pfx_kthread+0x10/0x10
 ret_from_fork_asm+0x1b/0x30
 </TASK>