Bug#832175: WARNING fpu/internal.h:532 fpu__restore
Hi,
here is another occurrence of this bug with a more recent kernel:
[64222.064017] ------------[ cut here ]------------
[64222.064022] WARNING: CPU: 1 PID: 10138 at /build/linux-zDY19G/linux-4.8.15/debian/build/source_rt/arch/x86/include/asm/fpu/internal.h:534 fpu__restore+0xf5/0x2f0
[64222.064044] Modules linked in: fuse(E) xt_multiport(E) cpufreq_conservative(E) cpufreq_powersave(E) cpufreq_userspace(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) coretemp(E) kvm_intel(E) kvm(E) iTCO_wdt(E) iTCO_vendor_support(E) dell_wmi(E) sparse_keymap(E) dell_smbios(E) ppdev(E) evdev(E) irqbypass(E) dcdbas(E) snd_hda_codec_analog(E) snd_hda_codec_generic(E) pcspkr(E) serio_raw(E) lpc_ich(E) sg(E) mfd_core(E) snd_hda_intel(E) i915(E) snd_hda_codec(E) snd_hda_core(E) snd_hwdep(E) snd_pcm_oss(E) snd_mixer_oss(E) snd_pcm(E) snd_timer(E) snd(E) shpchp(E) soundcore(E) video(E) drm_kms_helper(E) drm(E) i2c_algo_bit(E) acpi_cpufreq(E) tpm_tis(E) mei_me(E) tpm_tis_core(E) wmi(E) parport_pc(E) parport(E) button(E) mei(E) tpm(E) binfmt_misc(E) ib_iser(E) rdma_cm(E) iw_cm(E) ib_cm(E) ib_core(E)
[64222.064067] configfs(E) iscsi_tcp(E) libiscsi_tcp(E) libiscsi(E) scsi_transport_iscsi(E) drbd(E) lru_cache(E) loop(E) dm_crypt(E) dm_mod(E) ip_tables(E) x_tables(E) autofs4(E) ext4(E) crc16(E) jbd2(E) fscrypto(E) ecb(E) glue_helper(E) lrw(E) gf128mul(E) ablk_helper(E) cryptd(E) aes_x86_64(E) mbcache(E) btrfs(E) raid10(E) raid456(E) async_raid6_recov(E) async_memcpy(E) async_pq(E) async_xor(E) async_tx(E) xor(E) raid6_pq(E) libcrc32c(E) crc32c_generic(E) raid1(E) raid0(E) multipath(E) linear(E) md_mod(E) ses(E) enclosure(E) scsi_transport_sas(E) hid_generic(E) usbhid(E) hid(E) uas(E) usb_storage(E) sd_mod(E) psmouse(E) i2c_i801(E) i2c_smbus(E) ahci(E) libahci(E) ata_generic(E) uhci_hcd(E) ehci_pci(E) libata(E) ehci_hcd(E) e1000e(E) ptp(E) pps_core(E) scsi_mod(E) usbcore(E) usb_common(E)
[64222.064069] CPU: 1 PID: 10138 Comm: bash Tainted: G E 4.8.0-2-rt-amd64 #1 Debian 4.8.15-2
[64222.064070] Hardware name: Dell Inc. OptiPlex 780 /0C27VV, BIOS A08 01/21/2011
[64222.064072] 0000000000000286 000000001006c774 ffffffff9af35f17 0000000000000000
[64222.064074] 0000000000000000 ffffffff9ac7a9c7 ffff9c703b88c740 0000000000000000
[64222.064075] ffff9c703b88bb00 ffff9c703b88c740 ffff9c703b88c780 0000000000000240
[64222.064075] Call Trace:
[64222.064080] [<ffffffff9af35f17>] ? dump_stack+0x5c/0x85
[64222.064082] [<ffffffff9ac7a9c7>] ? __warn+0xd7/0xf0
[64222.064084] [<ffffffff9ac34115>] ? fpu__restore+0xf5/0x2f0
[64222.064085] [<ffffffff9ac35ce0>] ? __fpu__restore_sig+0x280/0x690
[64222.064087] [<ffffffff9ac70946>] ? ia32_restore_sigcontext+0x146/0x170
[64222.064088] [<ffffffff9ac70b6d>] ? sys32_sigreturn+0xbd/0xd0
[64222.064090] [<ffffffff9ac03d42>] ? do_int80_syscall_32+0x52/0xa0
[64222.064092] [<ffffffff9b20c373>] ? entry_INT80_compat+0x33/0x40
[64222.064093] ---[ end trace 0000000000000002 ]---
The kernel is still tainted, not because I am doing unsafe things with it, but because of this:
# dmesg | grep taint
[ 1.213087] usb_common: module verification failed: signature and/or required key missing - tainting kernel
--
Laurent.
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