On my laptop the check introduced with 55707d531af62b (tpm_tis: Add a check for invalid status) triggered the warning (output below). So, my laptop seems to be a candidate for testing. Dirk [ 7.255467] ------------[ cut here ]------------ [ 7.255468] TPM returned invalid status [ 7.255481] WARNING: CPU: 4 PID: 816 at drivers/char/tpm/tpm_tis_core.c:249 tpm_tis_status+0x5e/0x7f [tpm_tis_core] [ 7.255481] Modules linked in: nvram tpm_tis(+) tpm_tis_core tpm wmi pinctrl_amd [ 7.255485] CPU: 4 PID: 816 Comm: udevd Not tainted 5.9.0-x86_64+ #148 [ 7.255486] Hardware name: LENOVO 20U50008GE/20U50008GE, BIOS R19ET26W (1.10 ) 06/22/2020 [ 7.255488] RIP: 0010:tpm_tis_status+0x5e/0x7f [tpm_tis_core] [ 7.255489] Code: 44 8a 64 24 07 41 f6 c4 23 74 21 45 31 e4 80 3d 86 26 00 00 00 75 15 48 c7 c7 2a 71 01 a0 c6 05 76 26 00 00 01 e8 e1 17 0e e1 <0f> 0b 48 8b 44 24 08 65 48 33 04 25 28 00 00 00 74 05 e8 cd cd a2 [ 7.255489] RSP: 0018:ffffc90000f7f8b8 EFLAGS: 00010286 [ 7.255490] RAX: 0000000000000000 RBX: ffff8883f9117198 RCX: 000000000000038a [ 7.255490] RDX: 0000000000000001 RSI: 0000000000000002 RDI: ffffffff82dbd34c [ 7.255491] RBP: ffff8883f8aae000 R08: 0000000000000001 R09: 0000000000012d00 [ 7.255491] R10: 0000000000000000 R11: 000000000000003c R12: 0000000000000000 [ 7.255492] R13: 0000000000000000 R14: ffff8883f7c8a000 R15: 0000000000000016 [ 7.255493] FS: 00007f350c98d780(0000) GS:ffff88840ed00000(0000) knlGS:0000000000000000 [ 7.255493] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 7.255494] CR2: 00007f350c572ca8 CR3: 00000003f7000000 CR4: 0000000000350ee0 [ 7.255494] Call Trace: [ 7.255497] tpm_tis_send_data+0x28/0x187 [tpm_tis_core] [ 7.255498] tpm_tis_send_main+0x14/0x84 [tpm_tis_core] [ 7.255500] tpm_transmit+0xc5/0x2d7 [tpm] [ 7.255503] tpm_transmit_cmd+0x23/0x8b [tpm] [ 7.255504] tpm2_get_tpm_pt+0x71/0xb2 [tpm] [ 7.255505] tpm_tis_probe_irq_single+0x134/0xbe2 [tpm_tis_core] [ 7.255506] tpm_tis_core_init+0x3b3/0x47b [tpm_tis_core] [ 7.255508] tpm_tis_plat_probe+0xa7/0xc5 [tpm_tis] [ 7.255512] platform_drv_probe+0x2a/0x6b [ 7.255514] really_probe+0x157/0x32a [ 7.255516] driver_probe_device+0x63/0x97 [ 7.255517] device_driver_attach+0x37/0x50 [ 7.255518] __driver_attach+0x92/0x9a [ 7.255519] ? device_driver_attach+0x50/0x50 [ 7.255520] bus_for_each_dev+0x70/0xa6 [ 7.255521] bus_add_driver+0x103/0x1b4 [ 7.255522] driver_register+0x99/0xd2 [ 7.255523] ? 0xffffffffa0023000 [ 7.255524] init_tis+0x88/0x1000 [tpm_tis] [ 7.255526] ? consume_skb+0x9/0x20 [ 7.255529] ? ___cache_free+0x5c/0x153 [ 7.255531] ? _cond_resched+0x1b/0x1e [ 7.255532] do_one_initcall+0x8a/0x195 [ 7.255534] ? kmem_cache_alloc_trace+0x80/0x8f [ 7.255536] do_init_module+0x56/0x1e8 [ 7.255537] load_module+0x1c2c/0x2139 [ 7.255538] ? __do_sys_finit_module+0x8f/0xb6 [ 7.255539] __do_sys_finit_module+0x8f/0xb6 [ 7.255541] do_syscall_64+0x5d/0x6a [ 7.255543] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 7.255544] RIP: 0033:0x7f350cae8919 [ 7.255545] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 47 05 0c 00 f7 d8 64 89 01 48 [ 7.255545] RSP: 002b:00007ffe0e5ed928 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 7.255546] RAX: ffffffffffffffda RBX: 000055a400c373e0 RCX: 00007f350cae8919 [ 7.255546] RDX: 0000000000000000 RSI: 00007f350cbc1a7d RDI: 000000000000000b [ 7.255547] RBP: 0000000000020000 R08: 0000000000000000 R09: 00007ffe0e5edaa0 [ 7.255547] R10: 000000000000000b R11: 0000000000000246 R12: 00007f350cbc1a7d [ 7.255548] R13: 0000000000000000 R14: 000055a400c30e10 R15: 000055a400c373e0 [ 7.255548] ---[ end trace 883dd41f557db5d3 ]---
