Beelink GT1 Mini DTS file #17
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If not most of the code changes, you only need to change it. No need to duplicate the entire file. Use x96max as the primary source. You can see this in the x96max-rgmi example. The file name is better to specify as for the model gt1-mini-a (that would not be confusion with the version of gt1-mini) |
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Done. Followed your recommendation and included x96-max as a base, renamed file too. |
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To ensure that these changes are not lost, I recommend sending them to the main kernel. For example, this mailing list. They can tell you how to arrange everything. |
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Sure. I'll try to upstream it.
Juanjo sin .sig :(
…On Tue, Jul 9, 2019 at 4:17 AM Oleg ***@***.***> wrote:
To ensure that these changes are not lost, I recommend sending them to the
main kernel. For example, this mailing list. They can tell you how to
arrange everything.
http://lists.infradead.org/mailman/listinfo/linux-amlogic
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isjerryxiao
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Jul 15, 2019
[ Upstream commit 04e03d9a616c19a47178eaca835358610e63a1dd ] The mapper may be NULL when called from register_ftrace_function_probe() with probe->data == NULL. This issue can be reproduced as follow (it may be covered by compiler optimization sometime): / # cat /sys/kernel/debug/tracing/set_ftrace_filter #### all functions enabled #### / # echo foo_bar:dump > /sys/kernel/debug/tracing/set_ftrace_filter [ 206.949100] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [ 206.952402] Mem abort info: [ 206.952819] ESR = 0x96000006 [ 206.955326] Exception class = DABT (current EL), IL = 32 bits [ 206.955844] SET = 0, FnV = 0 [ 206.956272] EA = 0, S1PTW = 0 [ 206.956652] Data abort info: [ 206.957320] ISV = 0, ISS = 0x00000006 [ 206.959271] CM = 0, WnR = 0 [ 206.959938] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000419f3a000 [ 206.960483] [0000000000000000] pgd=0000000411a87003, pud=0000000411a83003, pmd=0000000000000000 [ 206.964953] Internal error: Oops: 96000006 [150balbes#1] SMP [ 206.971122] Dumping ftrace buffer: [ 206.973677] (ftrace buffer empty) [ 206.975258] Modules linked in: [ 206.976631] Process sh (pid: 281, stack limit = 0x(____ptrval____)) [ 206.978449] CPU: 10 PID: 281 Comm: sh Not tainted 5.2.0-rc1+ 150balbes#17 [ 206.978955] Hardware name: linux,dummy-virt (DT) [ 206.979883] pstate: 60000005 (nZCv daif -PAN -UAO) [ 206.980499] pc : free_ftrace_func_mapper+0x2c/0x118 [ 206.980874] lr : ftrace_count_free+0x68/0x80 [ 206.982539] sp : ffff0000182f3ab0 [ 206.983102] x29: ffff0000182f3ab0 x28: ffff8003d0ec1700 [ 206.983632] x27: ffff000013054b40 x26: 0000000000000001 [ 206.984000] x25: ffff00001385f000 x24: 0000000000000000 [ 206.984394] x23: ffff000013453000 x22: ffff000013054000 [ 206.984775] x21: 0000000000000000 x20: ffff00001385fe28 [ 206.986575] x19: ffff000013872c30 x18: 0000000000000000 [ 206.987111] x17: 0000000000000000 x16: 0000000000000000 [ 206.987491] x15: ffffffffffffffb0 x14: 0000000000000000 [ 206.987850] x13: 000000000017430e x12: 0000000000000580 [ 206.988251] x11: 0000000000000000 x10: cccccccccccccccc [ 206.988740] x9 : 0000000000000000 x8 : ffff000013917550 [ 206.990198] x7 : ffff000012fac2e8 x6 : ffff000012fac000 [ 206.991008] x5 : ffff0000103da588 x4 : 0000000000000001 [ 206.991395] x3 : 0000000000000001 x2 : ffff000013872a28 [ 206.991771] x1 : 0000000000000000 x0 : 0000000000000000 [ 206.992557] Call trace: [ 206.993101] free_ftrace_func_mapper+0x2c/0x118 [ 206.994827] ftrace_count_free+0x68/0x80 [ 206.995238] release_probe+0xfc/0x1d0 [ 206.995555] register_ftrace_function_probe+0x4a8/0x868 [ 206.995923] ftrace_trace_probe_callback.isra.4+0xb8/0x180 [ 206.996330] ftrace_dump_callback+0x50/0x70 [ 206.996663] ftrace_regex_write.isra.29+0x290/0x3a8 [ 206.997157] ftrace_filter_write+0x44/0x60 [ 206.998971] __vfs_write+0x64/0xf0 [ 206.999285] vfs_write+0x14c/0x2f0 [ 206.999591] ksys_write+0xbc/0x1b0 [ 206.999888] __arm64_sys_write+0x3c/0x58 [ 207.000246] el0_svc_common.constprop.0+0x408/0x5f0 [ 207.000607] el0_svc_handler+0x144/0x1c8 [ 207.000916] el0_svc+0x8/0xc [ 207.003699] Code: aa0003f8 a9025bf5 aa0103f5 f946ea80 (f9400303) [ 207.008388] ---[ end trace 7b6d11b5f542bdf1 ]--- [ 207.010126] Kernel panic - not syncing: Fatal exception [ 207.011322] SMP: stopping secondary CPUs [ 207.013956] Dumping ftrace buffer: [ 207.014595] (ftrace buffer empty) [ 207.015632] Kernel Offset: disabled [ 207.017187] CPU features: 0x002,20006008 [ 207.017985] Memory Limit: none [ 207.019825] ---[ end Kernel panic - not syncing: Fatal exception ]--- Link: http://lkml.kernel.org/r/20190606031754.10798-1-liwei391@huawei.com Signed-off-by: Wei Li <liwei391@huawei.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
isjerryxiao
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Aug 17, 2019
commit d0a255e795ab976481565f6ac178314b34fbf891 upstream. A deadlock with this stacktrace was observed. The loop thread does a GFP_KERNEL allocation, it calls into dm-bufio shrinker and the shrinker depends on I/O completion in the dm-bufio subsystem. In order to fix the deadlock (and other similar ones), we set the flag PF_MEMALLOC_NOIO at loop thread entry. PID: 474 TASK: ffff8813e11f4600 CPU: 10 COMMAND: "kswapd0" #0 [ffff8813dedfb938] __schedule at ffffffff8173f405 150balbes#1 [ffff8813dedfb990] schedule at ffffffff8173fa27 150balbes#2 [ffff8813dedfb9b0] schedule_timeout at ffffffff81742fec 150balbes#3 [ffff8813dedfba60] io_schedule_timeout at ffffffff8173f186 150balbes#4 [ffff8813dedfbaa0] bit_wait_io at ffffffff8174034f 150balbes#5 [ffff8813dedfbac0] __wait_on_bit at ffffffff8173fec8 150balbes#6 [ffff8813dedfbb10] out_of_line_wait_on_bit at ffffffff8173ff81 150balbes#7 [ffff8813dedfbb90] __make_buffer_clean at ffffffffa038736f [dm_bufio] 150balbes#8 [ffff8813dedfbbb0] __try_evict_buffer at ffffffffa0387bb8 [dm_bufio] 150balbes#9 [ffff8813dedfbbd0] dm_bufio_shrink_scan at ffffffffa0387cc3 [dm_bufio] 150balbes#10 [ffff8813dedfbc40] shrink_slab at ffffffff811a87ce 150balbes#11 [ffff8813dedfbd30] shrink_zone at ffffffff811ad778 150balbes#12 [ffff8813dedfbdc0] kswapd at ffffffff811ae92f 150balbes#13 [ffff8813dedfbec0] kthread at ffffffff810a8428 150balbes#14 [ffff8813dedfbf50] ret_from_fork at ffffffff81745242 PID: 14127 TASK: ffff881455749c00 CPU: 11 COMMAND: "loop1" #0 [ffff88272f5af228] __schedule at ffffffff8173f405 150balbes#1 [ffff88272f5af280] schedule at ffffffff8173fa27 150balbes#2 [ffff88272f5af2a0] schedule_preempt_disabled at ffffffff8173fd5e 150balbes#3 [ffff88272f5af2b0] __mutex_lock_slowpath at ffffffff81741fb5 150balbes#4 [ffff88272f5af330] mutex_lock at ffffffff81742133 150balbes#5 [ffff88272f5af350] dm_bufio_shrink_count at ffffffffa03865f9 [dm_bufio] 150balbes#6 [ffff88272f5af380] shrink_slab at ffffffff811a86bd 150balbes#7 [ffff88272f5af470] shrink_zone at ffffffff811ad778 150balbes#8 [ffff88272f5af500] do_try_to_free_pages at ffffffff811adb34 150balbes#9 [ffff88272f5af590] try_to_free_pages at ffffffff811adef8 150balbes#10 [ffff88272f5af610] __alloc_pages_nodemask at ffffffff811a09c3 150balbes#11 [ffff88272f5af710] alloc_pages_current at ffffffff811e8b71 150balbes#12 [ffff88272f5af760] new_slab at ffffffff811f4523 150balbes#13 [ffff88272f5af7b0] __slab_alloc at ffffffff8173a1b5 150balbes#14 [ffff88272f5af880] kmem_cache_alloc at ffffffff811f484b 150balbes#15 [ffff88272f5af8d0] do_blockdev_direct_IO at ffffffff812535b3 150balbes#16 [ffff88272f5afb00] __blockdev_direct_IO at ffffffff81255dc3 150balbes#17 [ffff88272f5afb30] xfs_vm_direct_IO at ffffffffa01fe3fc [xfs] 150balbes#18 [ffff88272f5afb90] generic_file_read_iter at ffffffff81198994 150balbes#19 [ffff88272f5afc50] __dta_xfs_file_read_iter_2398 at ffffffffa020c970 [xfs] 150balbes#20 [ffff88272f5afcc0] lo_rw_aio at ffffffffa0377042 [loop] 150balbes#21 [ffff88272f5afd70] loop_queue_work at ffffffffa0377c3b [loop] 150balbes#22 [ffff88272f5afe60] kthread_worker_fn at ffffffff810a8a0c 150balbes#23 [ffff88272f5afec0] kthread at ffffffff810a8428 150balbes#24 [ffff88272f5aff50] ret_from_fork at ffffffff81745242 Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Beelink GT1 Mini DTS file. Basically the same as X96 Max but with an extra reserved memory so newer GT1 Mini-A model boots.