[U-Boot] Travis test/py sandbox_spl test fail

Simon Glass sjg at chromium.org
Sat Aug 24 04:19:37 UTC 2019

Hi Kever,

On Mon, 19 Aug 2019 at 19:53, Kever Yang <kever.yang at rock-chips.com> wrote:
> Hi Stephen,
> On 2019/8/20 上午1:34, Stephen Warren wrote:
> > On 8/18/19 7:01 PM, Kever Yang wrote:
> >> Hi Simon, Stephen,
> >>
> >>      Could you help to comment on my other mail, which patch cause
> >> this failure.
> >
> > If you run "git bisect", you should be able to track down which patch
> > introduced the problem.
> I already locate the patch,  and it seems some but in sandbox_spl or
> test, but not the driver,
> see below:
> https://patchwork.ozlabs.org/patch/1100742/

Here's what I found:

$ gdb --args /tmp/b/sandbox_spl/u-boot -D
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Reading symbols from /tmp/b/sandbox_spl/u-boot...done.
(gdb) r
Starting program: /tmp/b/sandbox_spl/u-boot -D
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
bloblist_init() Existing bloblist not found: creating new bloblist

Program received signal SIGSEGV, Segmentation fault.
0x0000555555617db5 in strcmp (cs=cs at entry=0x5555556602cf "root_driver",
    ct=0x1 <error: Cannot access memory at address 0x1>)
    at /home/sjg/c/src/third_party/u-boot/files/lib/string.c:190
190 if ((__res = *cs - *ct++) != 0 || !*cs++)
(gdb) up
#1  0x00005555555a9f91 in lists_driver_lookup_name
(name=0x5555556602cf "root_driver")
    at /home/sjg/c/src/third_party/u-boot/files/drivers/core/lists.c:28
28 if (!strcmp(name, entry->name))
(gdb) print entry->name
$1 = 0x0
(gdb) print *entry
$2 = {name = 0x0, id = UCLASS_ROOT, of_match = 0x0, bind =
0x55555569b660, probe = 0x3e,
  remove = 0x5555556fd1e0 <rk8xx_ids>, unbind = 0x5555555d0ad6 <rk8xx_bind>,
  ofdata_to_platdata = 0x5555555d0a77 <rk8xx_probe>, child_post_bind =
0x0, child_pre_probe = 0x0,
  child_post_remove = 0x0, priv_auto_alloc_size = 0,
platdata_auto_alloc_size = 0,
  per_child_auto_alloc_size = 0, per_child_platdata_auto_alloc_size =
0, ops = 0x0, flags = 4}

Here you have a rockchip driver in UCLASS_ROOT with no name.

The symbol is _u_boot_list_2_driver_2_pmic_rk8xx so perhaps it is
getting corrupted?

(gdb) where
#0  0x0000555555617db5 in strcmp (cs=cs at entry=0x5555556602cf "root_driver",
    ct=0x1 <error: Cannot access memory at address 0x1>)
    at /home/sjg/c/src/third_party/u-boot/files/lib/string.c:190
#1  0x00005555555a9f91 in lists_driver_lookup_name
(name=0x5555556602cf "root_driver")
    at /home/sjg/c/src/third_party/u-boot/files/drivers/core/lists.c:28
#2  0x00005555555a9561 in device_bind_by_name (parent=parent at entry=0x0,
    pre_reloc_only=pre_reloc_only at entry=false,
info=info at entry=0x5555556fa560 <root_info>,
    devp=0x7fffffffdd08) at
#3  0x00005555555aa423 in dm_init (of_live=<optimized out>)
    at /home/sjg/c/src/third_party/u-boot/files/drivers/core/root.c:148
#4  0x00005555555aa558 in dm_init_and_scan
(pre_reloc_only=pre_reloc_only at entry=true)
    at /home/sjg/c/src/third_party/u-boot/files/drivers/core/root.c:373
#5  0x000055555559381a in initf_dm () at
#6  0x000055555559395a in initcall_run_list
(init_sequence=0x5555556fe840 <init_sequence_f>)
    at /home/sjg/c/src/third_party/u-boot/files/include/initcall.h:38
#7  board_init_f (boot_flags=<optimized out>)
    at /home/sjg/c/src/third_party/u-boot/files/common/board_f.c:986
#8  0x00005555555774d6 in main (argc=2, argv=0x7fffffffdf58)
    at /home/sjg/c/src/third_party/u-boot/files/arch/sandbox/cpu/start.c:360
(gdb) q


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