<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body> <div class="moz-cite-prefix">On 1/9/21 7:42 AM, Mikhail Gavrilov wrote: </div> <blockquote type="cite" cite="mid:%3CCABXGCsPZvfsUBiMr5fdQYRf26bMchN=UL8oXojgoVbWtwJhXjQ@mail.gmail.com%3E"> <pre class="moz-quote-pre" wrap="">Hi folks! I started to see this message every boot after replacing Radeon VII to 6900XT. <...> [ 6.333672] [drm] REG_WAIT timeout 1us * 100000 tries - mpc2_assert_idle_mpcc line:480 [ 6.335258] BUG: key ffff8b521bda9148 has not been registered! [ 6.335271] ------------[ cut here ]------------ [ 6.335273] DEBUG_LOCKS_WARN_ON(1) [ 6.335279] WARNING: CPU: 18 PID: 525 at kernel/locking/lockdep.c:4618 lockdep_init_map_waits+0x18b/0x210 [ 6.335284] Modules linked in: fjes(-) amdgpu(+) iommu_v2 gpu_sched ttm drm_kms_helper crct10dif_pclmul crc32_pclmul crc32c_intel cec drm ghash_clmulni_intel ccp igb nvme nvme_core dca i2c_algo_bit wmi pinctrl_amd fuse [ 6.335298] CPU: 18 PID: 525 Comm: systemd-udevd Not tainted 5.10.0-0.rc6.20201204git34816d20f173.92.fc34.x86_64 #1 [ 6.335302] Hardware name: System manufacturer System Product Name/ROG STRIX X570-I GAMING, BIOS 2802 10/21/2020 [ 6.335306] RIP: 0010:lockdep_init_map_waits+0x18b/0x210 [ 6.335309] Code: 00 85 c0 0f 84 75 ff ff ff 8b 3d 18 c4 f1 01 85 ff 0f 85 67 ff ff ff 48 c7 c6 68 43 60 97 48 c7 c7 1d 90 5a 97 e8 70 1f b6 00 <0f> 0b e9 4d ff ff ff e8 19 59 bc 00 85 c0 74 21 44 8b 1d e6 c3 f1 [ 6.335315] RSP: 0018:ffff9e5a013d3910 EFLAGS: 00010282 [ 6.335317] RAX: 0000000000000016 RBX: ffffffff97247d80 RCX: ffff8b5908fdb238 [ 6.335320] RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffff8b5908fdb230 [ 6.335322] RBP: ffff8b520e2a7978 R08: 0000000000000000 R09: 0000000000000000 [ 6.335325] R10: ffff9e5a013d3740 R11: ffff8b592e2fffe8 R12: ffff8b521bda9148 [ 6.335327] R13: 0000000000000000 R14: ffff8b521bc30330 R15: ffff8b521bc30330 [ 6.335330] FS: 00007fe019eb9140(0000) GS:ffff8b5908e00000(0000) knlGS:0000000000000000 [ 6.335333] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 6.335336] CR2: 00007fe018f5e000 CR3: 00000001142ee000 CR4: 0000000000350ee0 [ 6.335338] Call Trace: [ 6.335342] __kernfs_create_file+0x7b/0x100 [ 6.335344] sysfs_add_file_mode_ns+0xa3/0x190 [ 6.335347] sysfs_create_bin_file+0x50/0x70 [ 6.335428] hdcp_create_workqueue+0x3bd/0x410 [amdgpu] [ 6.335499] amdgpu_dm_init.isra.0.cold+0x136/0x126d [amdgpu] [ 6.335570] ? psp_set_srm+0xb0/0xb0 [amdgpu] [ 6.335637] ? hdcp_update_display+0x1f0/0x1f0 [amdgpu] [ 6.335641] ? dev_printk_emit+0x3e/0x40 [ 6.335709] dm_hw_init+0xe/0x20 [amdgpu] [ 6.335776] amdgpu_device_init.cold+0x18c3/0x1bbc [amdgpu] [ 6.335781] ? pci_bus_read_config_word+0x39/0x50 [ 6.335831] amdgpu_driver_load_kms+0x2b/0x1f0 [amdgpu] [ 6.335879] amdgpu_pci_probe+0x129/0x1b0 [amdgpu] [ 6.335889] local_pci_probe+0x42/0x80 [ 6.335891] pci_device_probe+0xd9/0x1a0 [ 6.335896] really_probe+0x205/0x460 [ 6.335898] driver_probe_device+0xe1/0x150 [ 6.335901] device_driver_attach+0xa8/0xb0 [ 6.335904] __driver_attach+0x8c/0x150 [ 6.335907] ? device_driver_attach+0xb0/0xb0 [ 6.335909] ? device_driver_attach+0xb0/0xb0 [ 6.335911] bus_for_each_dev+0x67/0x90 [ 6.335914] bus_add_driver+0x12e/0x1f0 [ 6.335917] driver_register+0x8b/0xe0 [ 6.335919] ? 0xffffffffc0e4c000 [ 6.335922] do_one_initcall+0x67/0x320 [ 6.335925] ? rcu_read_lock_sched_held+0x3f/0x80 [ 6.335928] ? trace_kmalloc+0xb2/0xe0 [ 6.335930] ? kmem_cache_alloc_trace+0x157/0x270 [ 6.335934] do_init_module+0x5c/0x260 [ 6.335936] __do_sys_init_module+0x13d/0x1a0 [ 6.335940] do_syscall_64+0x33/0x40 [ 6.335943] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 6.335945] RIP: 0033:0x7fe01aab2efe [ 6.335948] Code: 48 8b 0d 7d 1f 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 af 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 4a 1f 0c 00 f7 d8 64 89 01 48 [ 6.335953] RSP: 002b:00007ffdf4879928 EFLAGS: 00000246 ORIG_RAX: 00000000000000af [ 6.335957] RAX: ffffffffffffffda RBX: 00005636774ad820 RCX: 00007fe01aab2efe [ 6.335959] RDX: 00005636774856e0 RSI: 0000000000b4f95e RDI: 00007fe01840f010 [ 6.335962] RBP: 00007fe01840f010 R08: 000056367748bd30 R09: 0000000000b4f970 [ 6.335964] R10: 00005633142fc82b R11: 0000000000000246 R12: 00005636774856e0 [ 6.335967] R13: 00005636774d22d0 R14: 0000000000000000 R15: 00005636774a1d80 [ 6.335971] irq event stamp: 343839 [ 6.335973] hardirqs last enabled at (343839): [<ffffffff96162861>] console_unlock+0x511/0x640 [ 6.335977] hardirqs last disabled at (343838): [<ffffffff961627c8>] console_unlock+0x478/0x640 [ 6.335981] softirqs last enabled at (343730): [<ffffffff96e01112>] asm_call_irq_on_stack+0x12/0x20 [ 6.335984] softirqs last disabled at (343657): [<ffffffff96e01112>] asm_call_irq_on_stack+0x12/0x20 [ 6.335987] ---[ end trace a4445e953bea9224 ]---</pre> </blockquote> Another user I am helping is seeing this bug, with a very similar stack trace, in v5.12 (vanilla build) on different hardware. <blockquote type="cite" cite="mid:%3CCABXGCsPZvfsUBiMr5fdQYRf26bMchN=UL8oXojgoVbWtwJhXjQ@mail.gmail.com%3E"> <pre class="moz-quote-pre" wrap="">$ /usr/src/kernels/`uname -r`/scripts/faddr2line /lib/debug/lib/modules/`uname -r`/vmlinux lockdep_init_map_waits+0x18b lockdep_init_map_waits+0x18b/0x210: lockdep_init_map_waits at kernel/locking/lockdep.c:4618 (discriminator 7) $ git blame -L 4613,4623 kernel/locking/lockdep.c </pre> </blockquote> I assume the issue is not actually in the lockdep code itself, but more likely in the amdgpu / amd display code that ultimately calls it. Using scripts/decode_stacktrace.sh, the stack trace for v5.12 reads like this: <pre class="code highlight" lang="plaintext">[ 12.817369] Call Trace: [ 12.819991] __kernfs_create_file (fs/kernfs/file.c:998) [ 12.824581] sysfs_add_file_mode_ns (fs/sysfs/file.c:324) [ 12.829334] ? init_timer_key (kernel/time/timer.c:816) [ 12.833527] sysfs_create_bin_file (fs/sysfs/file.c:558) [ 12.838115] hdcp_create_workqueue (drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_hdcp.c:648) amdgpu [ 12.843964] amdgpu_dm_init.isra.0.cold (drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c:1481) amdgpu [ 12.850303] ? lock_acquire (kernel/locking/lockdep.c:437 kernel/locking/lockdep.c:5513 kernel/locking/lockdep.c:5476) [ 12.854303] ? lock_is_held_type (kernel/locking/lockdep.c:5254 kernel/locking/lockdep.c:5550) [ 12.858779] ? smum_send_msg_to_smc_with_parameter (drivers/gpu/drm/amd/amdgpu/../pm/powerplay/smumgr/smumgr.c:169) amdgpu [ 12.865954] ? find_held_lock (kernel/locking/lockdep.c:5004) [ 12.870065] ? smum_send_msg_to_smc_with_parameter (drivers/gpu/drm/amd/amdgpu/../pm/powerplay/smumgr/smumgr.c:169) amdgpu [ 12.877258] ? psp_set_srm (drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_hdcp.c:396) amdgpu [ 12.882124] ? hdcp_update_display (drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm_hdcp.c:431) amdgpu [ 12.887914] ? arch_jump_label_transform (arch/x86/kernel/jump_label.c:99) [ 12.892945] ? sched_clock_cpu (kernel/sched/clock.c:371) [ 12.897051] dm_hw_init (drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:1712) amdgpu [ 12.901526] amdgpu_device_init.cold (drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c:295) amdgpu [ 12.907703] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/paravirt.h:658 ./arch/x86/include/asm/irqflags.h:145 ./include/linux/spinlock_api_smp.h:160 kernel/locking/spinlock.c:191) [ 12.913015] amdgpu_driver_load_kms (drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c:157 (discriminator 6)) amdgpu [ 12.918773] amdgpu_pci_probe (drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c:1221) amdgpu </pre> Line numbers above correspond to the v5.12 tag in Linus's tree (this is a vanilla kernel). <blockquote type="cite" cite="mid:%3CCABXGCsPZvfsUBiMr5fdQYRf26bMchN=UL8oXojgoVbWtwJhXjQ@mail.gmail.com%3E"> <pre class="moz-quote-pre" wrap="">Who can help fix this? Full kernel logs is here: <a class="moz-txt-link-freetext" href="https://pastebin.com/d2Nq01SX">https://pastebin.com/d2Nq01SX</a> </pre> </blockquote> I created an issue for this bug before I found this e-mail: <a class="moz-txt-link-freetext" href="https://gitlab.freedesktop.org/drm/amd/-/issues/1586">https://gitlab.freedesktop.org/drm/amd/-/issues/1586</a> The full kernel logs for v5.12 are posted there. Thank you, David </body> </html>