Linux mainline fork with MSM8998 patches | https://mainline.space | Currently supported devices:
OnePlus 5/5T, Xiaomi Mi 6, F(x)tec Pro¹ (2019 QX1000 model) & Sony Xperia XZ Premium (UNTESTED!)
a9aecef198
Patch fixes the following critical issue caused by deadlock which has been
detected during testing NCM class:
smp: csd: Detected non-responsive CSD lock (#1) on CPU#0
smp: csd: CSD lock (#1) unresponsive.
....
RIP: 0010:native_queued_spin_lock_slowpath+0x61/0x1d0
RSP: 0018:ffffbc494011cde0 EFLAGS: 00000002
RAX: 0000000000000101 RBX: ffff9ee8116b4a68 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff9ee8116b4658
RBP: ffffbc494011cde0 R08: 0000000000000001 R09: 0000000000000000
R10: ffff9ee8116b4670 R11: 0000000000000000 R12: ffff9ee8116b4658
R13: ffff9ee8116b4670 R14: 0000000000000246 R15: ffff9ee8116b4658
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7bcc41a830 CR3: 000000007a612003 CR4: 00000000001706e0
Call Trace:
<IRQ>
do_raw_spin_lock+0xc0/0xd0
_raw_spin_lock_irqsave+0x95/0xa0
cdnsp_gadget_ep_queue.cold+0x88/0x107 [cdnsp_udc_pci]
usb_ep_queue+0x35/0x110
eth_start_xmit+0x220/0x3d0 [u_ether]
ncm_tx_timeout+0x34/0x40 [usb_f_ncm]
? ncm_free_inst+0x50/0x50 [usb_f_ncm]
__hrtimer_run_queues+0xac/0x440
hrtimer_run_softirq+0x8c/0xb0
__do_softirq+0xcf/0x428
asm_call_irq_on_stack+0x12/0x20
</IRQ>
do_softirq_own_stack+0x61/0x70
irq_exit_rcu+0xc1/0xd0
sysvec_apic_timer_interrupt+0x52/0xb0
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:do_raw_spin_trylock+0x18/0x40
RSP: 0018:ffffbc494138bda8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff9ee8116b4658 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff9ee8116b4658
RBP: ffffbc494138bda8 R08: 0000000000000001 R09: 0000000000000000
R10: ffff9ee8116b4670 R11: 0000000000000000 R12: ffff9ee8116b4658
R13: ffff9ee8116b4670 R14: ffff9ee7b5c73d80 R15: ffff9ee8116b4000
_raw_spin_lock+0x3d/0x70
? cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci]
cdnsp_thread_irq_handler.cold+0x32/0x112c [cdnsp_udc_pci]
? cdnsp_remove_request+0x1f0/0x1f0 [cdnsp_udc_pci]
? cdnsp_thread_irq_handler+0x5/0xa0 [cdnsp_udc_pci]
? irq_thread+0xa0/0x1c0
irq_thread_fn+0x28/0x60
irq_thread+0x105/0x1c0
? __kthread_parkme+0x42/0x90
? irq_forced_thread_fn+0x90/0x90
? wake_threads_waitq+0x30/0x30
? irq_thread_check_affinity+0xe0/0xe0
kthread+0x12a/0x160
? kthread_park+0x90/0x90
ret_from_fork+0x22/0x30
The root cause of issue is spin_lock/spin_unlock instruction instead
spin_lock_irqsave/spin_lock_irqrestore in cdnsp_thread_irq_handler
function.
Cc: stable@vger.kernel.org
Fixes:
|
||
|---|---|---|
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.