while booting with drm.debug=0x3ff on cmdline, I saw this complaint. I can go looking for it at some point, but I should report it now. [ 7.401934] fbcon: amdgpudrmfb (fb0) is primary device [ 7.401999] [drm] DSC precompute is not needed. [ 7.402114] ------------[ cut here ]------------ [ 7.402115] Please remove unsupported %f in format string [ 7.402126] WARNING: CPU: 1 PID: 526 at lib/vsprintf.c:2656 format_decode+0x441/0x540 [ 7.402132] Modules linked in: amdgpu(+) drm_ttm_helper ttm video iommu_v2 gpu_sched i2c_algo_bit drm_buddy drm_display_helper drm_kms_helper drm crct10dif_pclmul crc32_pclmul crc32c_intel nvme cc p ghash_clmulni_intel sp5100_tco nvme_core cec r8169 wmi ip6_tables ip_tables fuse [ 7.402146] CPU: 1 PID: 526 Comm: systemd-udevd Not tainted 6.0.0-kj-09699-g8419b52b1e22 #12 [ 7.402148] Hardware name: MicroElectronics G464/TUF GAMING X570-PLUS (WI-FI), BIOS 9004 10/10/2019 [ 7.402150] RIP: 0010:format_decode+0x441/0x540 [ 7.402152] Code: ff ff c6 45 05 08 ba 12 00 00 00 e9 9b fc ff ff 0f be f2 48 c7 c7 40 e9 6b b8 48 89 04 24 c6 05 28 ee 8e 01 01 e8 8d ff 57 00 <0f> 0b 48 8b 04 24 e9 fc fd ff ff 48 8d 7c 24 08 e8 aa f3 ff ff 88 [ 7.402154] RSP: 0018:ffffaa4300a76e58 EFLAGS: 00010292 [ 7.402155] RAX: 000000000000002d RBX: ffffffffc0ccb295 RCX: 0000000000000000 [ 7.402157] RDX: 0000000000000003 RSI: ffffffffb86a0b3f RDI: 00000000ffffffff [ 7.402157] RBP: ffffaa4300a76e90 R08: ffffffffb8e78120 R09: ffffaa4300a76df8 [ 7.402159] R10: 3fffffffffffffff R11: 000000000000002f R12: ffff8bdc3ea6ee80 [ 7.402159] R13: ffffffffc0ccb295 R14: 00000000000000da R15: ffff8bdc3ea6edb8 [ 7.402160] FS: 00007fa035678580(0000) GS:ffff8bdc3ea40000(0000) knlGS:0000000000000000 [ 7.402162] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 7.402163] CR2: 000055bf740fc1d0 CR3: 0000000128d9e000 CR4: 0000000000350ee0 [ 7.402164] Call Trace: [ 7.402166] <TASK> [ 7.402170] vsnprintf+0x5d/0x550 [ 7.402173] va_format.constprop.0+0x61/0xf0 [ 7.402175] vsnprintf+0x184/0x550 [ 7.402178] vscnprintf+0xe/0x30 [ 7.402180] ddebug_trace+0x72/0x150 [ 7.402183] ddebug_printk+0x66/0xa0 [ 7.402185] __dynamic_pr_debug+0xd3/0x110 [ 7.402189] CalculatePrefetchSchedule.constprop.0+0x6c3/0xee0 [amdgpu] [ 7.402430] ? trace_event_buffer_commit+0x59/0x250 [ 7.402434] dml20v2_ModeSupportAndSystemConfigurationFull+0x4a00/0x5d50 [amdgpu] [ 7.402630] ? dml_get_voltage_level+0x15c/0x270 [amdgpu]
