Hi Jian > -----Original Message----- > From: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> > Sent: Thursday, April 2, 2020 3:35 AM > To: Jian-Hong Pan <jian-hong@xxxxxxxxxxxx>; Ajay Gupta > <ajayg@xxxxxxxxxx> > Cc: linux-i2c@xxxxxxxxxxxxxxx; Linux Kernel <linux-kernel@xxxxxxxxxxxxxxx>; > linux-usb@xxxxxxxxxxxxxxx; Linux Upstreaming Team <linux@xxxxxxxxxxxx> > Subject: Re: [BUG] i2c_nvidia_gpu takes long time and makes system > suspend & resume failed with NVIDIA cards > > External email: Use caution opening links or attachments > > > Hi, > > On Thu, Apr 02, 2020 at 06:22:14PM +0800, Jian-Hong Pan wrote: > > Hi, > > > > We got some machines like Acer desktop equipped with NVIDIA GTX 1660 > > card, Acer Predator PH315-52 equipped with NVIDIA GeForce RTX 2060 > > Mobile and ASUS UX581LV equipped with NNVIDIA GeForce RTX 2060. > > We found them take long time (more than 50 seconds) to resume after > > suspend. During the resuming time, the screen is blank. And check > > the dmesg, found the error during resume: > > > > [ 28.060831] PM: suspend entry (deep) > > [ 28.144260] Filesystems sync: 0.083 seconds > > [ 28.150219] Freezing user space processes ... > > [ 48.153282] Freezing of tasks failed after 20.003 seconds (1 tasks > > refusing to freeze, wq_busy=0): > > [ 48.153447] systemd-udevd D13440 382 330 0x80004124 > > [ 48.153457] Call Trace: > > [ 48.153504] ? __schedule+0x272/0x5a0 > > [ 48.153558] ? hrtimer_start_range_ns+0x18c/0x2c0 > > [ 48.153622] schedule+0x45/0xb0 > > [ 48.153668] schedule_hrtimeout_range_clock+0x8f/0x100 > > [ 48.153738] ? hrtimer_init_sleeper+0x80/0x80 > > [ 48.153798] usleep_range+0x5a/0x80 > > [ 48.153850] gpu_i2c_check_status.isra.0+0x3a/0xa0 [i2c_nvidia_gpu] > > [ 48.153933] gpu_i2c_master_xfer+0x155/0x20e [i2c_nvidia_gpu] > > [ 48.154012] __i2c_transfer+0x163/0x4c0 > > [ 48.154067] i2c_transfer+0x6e/0xc0 > > [ 48.154120] ccg_read+0x11f/0x170 [ucsi_ccg] > > [ 48.154182] get_fw_info+0x17/0x50 [ucsi_ccg] > > [ 48.154242] ucsi_ccg_probe+0xf4/0x200 [ucsi_ccg] > > [ 48.154312] ? ucsi_ccg_init+0xe0/0xe0 [ucsi_ccg] > > [ 48.154377] i2c_device_probe+0x113/0x210 > > [ 48.154435] really_probe+0xdf/0x280 > > [ 48.154487] driver_probe_device+0x4b/0xc0 > > [ 48.154545] device_driver_attach+0x4e/0x60 > > [ 48.154604] __driver_attach+0x44/0xb0 > > [ 48.154657] ? device_driver_attach+0x60/0x60 > > [ 48.154717] bus_for_each_dev+0x6c/0xb0 > > [ 48.154772] bus_add_driver+0x172/0x1c0 > > [ 48.154824] driver_register+0x67/0xb0 > > [ 48.154877] i2c_register_driver+0x39/0x70 > > [ 48.154932] ? 0xffffffffc00ac000 > > [ 48.154978] do_one_initcall+0x3e/0x1d0 > > [ 48.155032] ? free_vmap_area_noflush+0x8d/0xe0 > > [ 48.155093] ? _cond_resched+0x10/0x20 > > [ 48.155145] ? kmem_cache_alloc_trace+0x3a/0x1b0 > > [ 48.155208] do_init_module+0x56/0x200 > > [ 48.155260] load_module+0x21fe/0x24e0 > > [ 48.155322] ? __do_sys_finit_module+0xbf/0xe0 > > [ 48.155381] __do_sys_finit_module+0xbf/0xe0 > > [ 48.155441] do_syscall_64+0x3d/0x130 > > [ 48.156841] entry_SYSCALL_64_after_hwframe+0x44/0xa9 > > [ 48.158074] RIP: 0033:0x7fba3b4bc2a9 > > [ 48.158707] Code: Bad RIP value. > > [ 48.158990] RSP: 002b:00007ffe1da3a6d8 EFLAGS: 00000246 ORIG_RAX: > > 0000000000000139 > > [ 48.159259] RAX: ffffffffffffffda RBX: 000055ca6922c470 RCX: > 00007fba3b4bc2a9 > > [ 48.159566] RDX: 0000000000000000 RSI: 00007fba3b3c0cad RDI: > 0000000000000010 > > [ 48.159842] RBP: 00007fba3b3c0cad R08: 0000000000000000 R09: > 0000000000000000 > > [ 48.160117] R10: 0000000000000010 R11: 0000000000000246 R12: > 0000000000000000 > > [ 48.160412] R13: 000055ca6922f940 R14: 0000000000020000 R15: > 000055ca6922c470 > > > > I have filed this to bugzilla and more detail: > > https://bugzilla.kernel.org/show_bug.cgi?id=206653 > > > > Any comment will be appreciated. > > You are using an outdated kernel, 5.4.0. Please make sure that you can > reproduce the issue with mainline, or at least with the longterm 5.4.x. > > Ajay, based on the backtrace, the issue seems to be starting from your I2C > driver. Please take a look at this. I have replied to Bugzilla https://bugzilla.kernel.org/show_bug.cgi?id=206653#c5 Thanks > nvpuclic > > thanks, > > -- > heikki
