Hi guys, I have a custom linux kernel 4.0.3 with debug info and I saw a couple of times a stack dump for nct6775 module (compiled as module, loaded at boot time). I can also recall similar situation with 3.18.11. I wonder if it is a known problem with nct6775 driver (or not a problem). Motherboard: ASRock E3C222D4U, BIOS P1.10 02/11/2015 Chip (as in manual): Nuvoton NCT6776D Just in case, I use lm_sensors-3.3.5 in the linux build Cut from kernel log: [ 8.957599] nct6775: Found NCT6776D/F or compatible chip at 0x2e:0x290 [ 8.958006] BUG: key ffff88040b2f0030 not in .data! [ 8.958008] ------------[ cut here ]------------ [ 8.958790] WARNING: CPU: 0 PID: 186 at kernel/locking/lockdep.c:2988 lockdep_init_map+0x469/0x630() [ 8.959586] DEBUG_LOCKS_WARN_ON(1) [ 8.959599] Modules linked in: nct6775(+) hwmon_vid bonding [ 8.961215] CPU: 0 PID: 186 Comm: modprobe Not tainted 4.0.3-asu0517 #1 [ 8.961908] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./E3C222D4U, BIOS P1.10 02/11/2015 [ 8.962662] ffffffff81c5a896 ffff88040b35f698 ffffffff8182810d ffffffff810a1341 [ 8.963466] ffff88040b35f6e8 ffff88040b35f6d8 ffffffff81058677 ffff88040b2f0030 [ 8.964271] ffff88040ac76728 ffff88040b2f0030 0000000000000000 0000000000001000 [ 8.965081] Call Trace: [ 8.965865] [<ffffffff8182810d>] dump_stack+0x4c/0x6e [ 8.966650] [<ffffffff810a1341>] ? console_unlock+0x1f1/0x4c0 [ 8.967431] [<ffffffff81058677>] warn_slowpath_common+0x87/0xc0 [ 8.968209] [<ffffffff810586f1>] warn_slowpath_fmt+0x41/0x50 [ 8.968977] [<ffffffff810938b9>] lockdep_init_map+0x469/0x630 [ 8.969754] [<ffffffff811d381d>] ? __kernfs_new_node+0x5d/0xd0 [ 8.970507] [<ffffffff811d63a1>] __kernfs_create_file+0x71/0xd0 [ 8.971262] [<ffffffff811d6d42>] sysfs_add_file_mode_ns+0x92/0x1d0 [ 8.972010] [<ffffffff811d7970>] internal_create_group+0xd0/0x250 [ 8.972741] [<ffffffff811d7c52>] sysfs_create_groups+0x42/0x90 [ 8.973476] [<ffffffff81502c4d>] device_add+0x2ed/0x630 [ 8.974190] [<ffffffff81502fa9>] device_register+0x19/0x20 [ 8.974911] [<ffffffff81695c18>] hwmon_device_register_with_groups.part.6+0xb8/0x120 [ 8.975640] [<ffffffff81695ce9>] hwmon_device_register_with_groups+0x69/0x70 [ 8.976361] [<ffffffff81695d4f>] devm_hwmon_device_register_with_groups+0x5f/0xa0 [ 8.977091] [<ffffffffa00333b1>] nct6775_probe+0x1c1/0x1ae6 [nct6775] [ 8.977792] [<ffffffff81507e0f>] platform_drv_probe+0x2f/0x90 [ 8.978482] [<ffffffff81505d35>] driver_probe_device+0x125/0x3d0 [ 8.979170] [<ffffffff81505fe0>] ? driver_probe_device+0x3d0/0x3d0 [ 8.979858] [<ffffffff8150601b>] __device_attach+0x3b/0x40 [ 8.980509] [<ffffffff81503cd3>] bus_for_each_drv+0x63/0xa0 [ 8.981171] [<ffffffff81505b90>] device_attach+0x90/0xb0 [ 8.981847] [<ffffffff81504f90>] bus_probe_device+0xb0/0xe0 [ 8.982519] [<ffffffff81502d83>] device_add+0x423/0x630 [ 8.983181] [<ffffffff8182fae6>] ? _raw_write_unlock+0x26/0x50 [ 8.983838] [<ffffffff81507a51>] platform_device_add+0xd1/0x2d0 [ 8.984490] [<ffffffffa003d31d>] sensors_nct6775_init+0x31d/0x3ae [nct6775] [ 8.985147] [<ffffffff81000308>] ? do_one_initcall+0xc8/0x210 [ 8.985780] [<ffffffffa003d000>] ? 0xffffffffa003d000 [ 8.986409] [<ffffffff81000314>] do_one_initcall+0xd4/0x210 [ 8.987040] [<ffffffff8182469d>] ? do_init_module+0x23/0x1c1 [ 8.987665] [<ffffffff811593c0>] ? kmem_cache_alloc_trace+0x130/0x1e0 [ 8.988289] [<ffffffff818246d6>] do_init_module+0x5c/0x1c1 [ 8.988908] [<ffffffff810cc922>] load_module+0x1a52/0x23c0 [ 8.989518] [<ffffffff810c95b0>] ? store_uevent+0x40/0x40 [ 8.990100] [<ffffffff810cd46e>] SyS_finit_module+0x7e/0xa0 [ 8.990690] [<ffffffff818300f2>] system_call_fastpath+0x12/0x17 [ 8.991295] ---[ end trace 046e10fe12543e9a ]--- Regards, Alexey _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
