Hi, After a BIOS update I get this in dmesg: [ 0.581554] EFI Variables Facility v0.08 2004-May-17 [ 0.584914] ------------[ cut here ]------------ [ 0.585639] WARNING: at /home/andre/linux/fs/sysfs/dir.c:536 sysfs_add_one+0x d4/0x100() [ 0.586381] Hardware name: To be filled by O.E.M. [ 0.587123] sysfs: cannot create duplicate filename '/firmware/efi/vars/SbAsl BufferPtrVar-01f33c25-764d-43ea-aeea-6b5a41f3f3e8' [ 0.588694] Modules linked in: [ 0.589484] Pid: 1, comm: swapper/0 Not tainted 3.8.0+ #7 [ 0.590280] Call Trace: [ 0.591066] [<ffffffff81208954>] ? sysfs_add_one+0xd4/0x100 [ 0.591861] [<ffffffff810587bf>] warn_slowpath_common+0x7f/0xc0 [ 0.592650] [<ffffffff810588bc>] warn_slowpath_fmt+0x4c/0x50 [ 0.593429] [<ffffffff8134dd85>] ? strlcat+0x65/0x80 [ 0.594203] [<ffffffff81208954>] sysfs_add_one+0xd4/0x100 [ 0.594979] [<ffffffff81208b78>] create_dir+0x78/0xd0 [ 0.595753] [<ffffffff81208ec6>] sysfs_create_dir+0x86/0xe0 [ 0.596532] [<ffffffff81347e4c>] kobject_add_internal+0x9c/0x220 [ 0.597310] [<ffffffff81348307>] kobject_init_and_add+0x67/0x90 [ 0.598083] [<ffffffff81584a71>] ? efivar_create_sysfs_entry+0x61/0x1c0 [ 0.598859] [<ffffffff81584b2b>] efivar_create_sysfs_entry+0x11b/0x1c0 [ 0.599631] [<ffffffff8158517e>] register_efivars+0xde/0x420 [ 0.600395] [<ffffffff81d430a7>] ? edd_init+0x2f5/0x2f5 [ 0.601150] [<ffffffff81d4315f>] efivars_init+0xb8/0x104 [ 0.601903] [<ffffffff8100215a>] do_one_initcall+0x12a/0x180 [ 0.602659] [<ffffffff81d05d80>] kernel_init_freeable+0x13e/0x1c6 [ 0.603418] [<ffffffff81d05586>] ? loglevel+0x31/0x31 [ 0.604183] [<ffffffff816a6530>] ? rest_init+0x80/0x80 [ 0.604936] [<ffffffff816a653e>] kernel_init+0xe/0xf0 [ 0.605681] [<ffffffff816ce7ec>] ret_from_fork+0x7c/0xb0 [ 0.606414] [<ffffffff816a6530>] ? rest_init+0x80/0x80 [ 0.607143] ---[ end trace 1609741ab737eb29 ]--- [ 0.607869] ------------[ cut here ]------------ [ 0.608589] WARNING: at /home/andre/linux/lib/kobject.c:196 kobject_add_internal+0x204/0x220() [ 0.609342] Hardware name: To be filled by O.E.M. [ 0.610093] kobject_add_internal failed for SbAslBufferPtrVar-01f33c25-764d-43ea-aeea-6b5a41f3f3e8 with -EEXIST, don't try to register things with the same name in the same directory. [ 0.611703] Modules linked in: [ 0.612497] Pid: 1, comm: swapper/0 Tainted: G W 3.8.0+ #7 [ 0.613312] Call Trace: [ 0.614112] [<ffffffff81347fb4>] ? kobject_add_internal+0x204/0x220 [ 0.614931] [<ffffffff810587bf>] warn_slowpath_common+0x7f/0xc0 [ 0.615753] [<ffffffff810588bc>] warn_slowpath_fmt+0x4c/0x50 [ 0.616559] [<ffffffff81347fb4>] kobject_add_internal+0x204/0x220 [ 0.617362] [<ffffffff81348307>] kobject_init_and_add+0x67/0x90 [ 0.618152] [<ffffffff81584a71>] ? efivar_create_sysfs_entry+0x61/0x1c0 [ 0.618936] [<ffffffff81584b2b>] efivar_create_sysfs_entry+0x11b/0x1c0 [ 0.619732] [<ffffffff8158517e>] register_efivars+0xde/0x420 [ 0.620518] [<ffffffff81d430a7>] ? edd_init+0x2f5/0x2f5 [ 0.621297] [<ffffffff81d4315f>] efivars_init+0xb8/0x104 [ 0.622072] [<ffffffff8100215a>] do_one_initcall+0x12a/0x180 [ 0.622836] [<ffffffff81d05d80>] kernel_init_freeable+0x13e/0x1c6 [ 0.623590] [<ffffffff81d05586>] ? loglevel+0x31/0x31 [ 0.624314] [<ffffffff816a6530>] ? rest_init+0x80/0x80 [ 0.625010] [<ffffffff816a653e>] kernel_init+0xe/0xf0 [ 0.625703] [<ffffffff816ce7ec>] ret_from_fork+0x7c/0xb0 [ 0.626393] [<ffffffff816a6530>] ? rest_init+0x80/0x80 [ 0.627078] ---[ end trace 1609741ab737eb2a ]--- Sounds like yet another BIOS issue, and I guess the answer is "complain to the manufacturer"... But we know how well that works, so can this be a warning instead of a scary backtrace? :) (this is: Gigabyte Technology Co., Ltd. To be filled by O.E.M./Z77X-UD3H, BIOS F19e 11/21/2012)" Thanks, Andre -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
