f5af19889f
commit b43ca511178ed0ab6fd2405df28cf9e100273020 upstream. struct firmware::data is marked const, and when the firmware is compressed with xz (default at least with Fedora) it's mapped read-only which results in a crash: BUG: unable to handle page fault for address: ffffae57c0ca5047 PGD 100000067 P4D 100000067 PUD 1001ce067 PMD 10165a067 PTE 8000000112bba161 Oops: 0003 [#1] SMP NOPTI CPU: 3 PID: 204 Comm: kworker/u17:0 Not tainted 5.12.1-test+ #1 Hardware name: Dell Inc. XPS 13 9310/0F7M4C, BIOS 1.2.5 12/10/2020 Workqueue: hci0 hci_power_on [bluetooth] RIP: 0010:qca_download_firmware+0x27c/0x4e0 [btqca] Code: 1b 75 04 80 48 0c 01 0f b7 c6 8d 54 02 0c 41 39 d7 0f 8e 62 fe ff ff 48 63 c2 4c 01 e8 0f b7 38 0f b7 70 02 66 83 ff 11 75 d3 <80> 48 0c 80 41 83 fc 03 7e 6e 88 58 0d eb ce 41 0f b6 45 0e 48 8b RSP: 0018:ffffae57c08dfc68 EFLAGS: 00010246 RAX: ffffae57c0ca503b RBX: 000000000000000e RCX: 0000000000000000 RDX: 0000000000000037 RSI: 0000000000000006 RDI: 0000000000000011 RBP: ffff978d9949e000 R08: ffff978d84ed7540 R09: ffffae57c0ca5000 R10: 000000000010cd00 R11: 0000000000000001 R12: 0000000000000005 R13: ffffae57c0ca5004 R14: ffff978d98ca8680 R15: 00000000000016a9 FS: 0000000000000000(0000) GS:ffff9794ef6c0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffae57c0ca5047 CR3: 0000000113d5a004 CR4: 0000000000770ee0 PKRU: 55555554 Call Trace: qca_uart_setup+0x2cb/0x1390 [btqca] ? qca_read_soc_version+0x136/0x220 [btqca] qca_setup+0x288/0xab0 [hci_uart] hci_dev_do_open+0x1f3/0x780 [bluetooth] ? try_to_wake_up+0x1c1/0x4f0 hci_power_on+0x3f/0x200 [bluetooth] process_one_work+0x1ec/0x380 worker_thread+0x53/0x3e0 ? process_one_work+0x380/0x380 kthread+0x11b/0x140 ? kthread_associate_blkcg+0xa0/0xa0 ret_from_fork+0x1f/0x30 Modules linked in: llc ip_set nf_tables nfnetlink snd_soc_skl_hda_dsp(+) ip6table_filter snd_soc_hdac_hdmi ip6_tables qrtr_mhi iptable_filter snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic s> dell_wmi_sysman(+) dell_smbios snd dcdbas mhi vfat videobuf2_vmalloc i2c_i801 videobuf2_memops videobuf2_v4l2 dell_wmi_descriptor fat wmi_bmof soundcore i2c_smbus videobuf2_common libarc4 mei_me mei hid_se> i2c_hid_acpi i2c_hid video pinctrl_tigerlake fuse CR2: ffffae57c0ca5047 This also seems to fix a failure to suspend due to the firmware download on bootup getting interrupted by the crash: Bluetooth: hci0: SSR or FW download time out PM: dpm_run_callback(): acpi_subsys_suspend+0x0/0x60 returns -110 PM: Device serial0-0 failed to suspend: error -110 PM: Some devices failed to suspend, or early wake event detected Fixes: 83e8196 ("Bluetooth: btqca: Introduce generic QCA ROME support") Cc: Venkata Lakshmi Narayana Gubba <gubbaven@codeaurora.org> Cc: stable@vger.kernel.org Signed-off-by: Connor Abbott <cwabbott0@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.