Description of problem:

Trying rawhide kernel 4.5.0-0.rc2.git1.1.fc24.i686+PAE, I found this in dmesg:

[  122.704228] Corrupted low memory at c000c180 (c180 phys) = fd0e0000
[  122.704277] ------------[ cut here ]------------
[  122.704306] WARNING: CPU: 0 PID: 28 at arch/x86/kernel/check.c:141 check_for_bios_corruption+0x8d/0xd0()
[  122.704316] Memory corruption detected in low memory
[  122.704325] Modules linked in: fuse nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ebtable_broute bridge stp llc ebtable_nat ebtable_filter ebtables ip6table_raw ip6table_mangle ip6table_security ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_filter ip6_tables iptable_raw iptable_mangle iptable_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack gpio_ich iTCO_wdt iTCO_vendor_support msi_wmi sparse_keymap coretemp arc4 rt2800pci rt2800mmio rt2800lib rt2x00pci rt2x00mmio rt2x00lib mac80211 snd_hda_codec_realtek joydev snd_hda_codec_generic cfg80211 snd_hda_intel snd_hda_codec lpc_ich eeprom_93cx6 r8169 crc_ccitt snd_hda_core rfkill snd_hwdep mii snd_seq snd_seq_device wmi snd_pcm snd_timer snd
[  122.704651]  acpi_cpufreq fjes soundcore tpm_tis tpm nfsd auth_rpcgss nfs_acl lockd grace sunrpc i915 ums_realtek uas serio_raw usb_storage i2c_algo_bit drm_kms_helper drm video
[  122.704762] CPU: 0 PID: 28 Comm: kworker/0:1 Tainted: G      D         4.5.0-0.rc2.git1.1.fc24.i686+PAE #1
[  122.704774] Hardware name: MEDION E1210/E1210, BIOS 4.6.3 01/14/2009
[  122.704791] Workqueue: events check_corruption
[  122.704807]  c0f08a27 e41f3508 00000000 f4b17e1c c07c27af f4b17e5c f4b17e4c c047b697
[  122.704851]  c0df1de0 f4b17e7c 0000001c c0df9796 0000008d c046433d c046433d c0010000
[  122.704894]  00000000 c1228bb0 f4b17e68 c047b70e 00000009 f4b17e5c c0df1de0 f4b17e7c
[  122.704937] Call Trace:
[  122.704961]  [<c07c27af>] dump_stack+0x48/0x69
[  122.704980]  [<c047b697>] warn_slowpath_common+0x87/0xc0
[  122.704999]  [<c046433d>] ? check_for_bios_corruption+0x8d/0xd0
[  122.705071]  [<c046433d>] ? check_for_bios_corruption+0x8d/0xd0
[  122.705088]  [<c047b70e>] warn_slowpath_fmt+0x3e/0x60
[  122.705106]  [<c046433d>] check_for_bios_corruption+0x8d/0xd0
[  122.705123]  [<c0464390>] check_corruption+0x10/0x40
[  122.705140]  [<c04976dd>] process_one_work+0x22d/0x630
[  122.705157]  [<c0497636>] ? process_one_work+0x186/0x630
[  122.705174]  [<c0497b21>] worker_thread+0x41/0x460
[  122.705191]  [<c0497ae0>] ? process_one_work+0x630/0x630
[  122.705207]  [<c049e299>] kthread+0xb9/0xd0
[  122.705229]  [<c0c0f477>] ? _raw_spin_unlock_irq+0x27/0x40
[  122.705248]  [<c0c0fe49>] ret_from_kernel_thread+0x21/0x38
[  122.705265]  [<c049e1e0>] ? kthread_create_on_node+0x190/0x190
[  122.705280] ---[ end trace 42a4f83e34cbd579 ]---