[Bug 198883] amdgpu: carrizo: Screen stalls after starting X

Tue Mar 6 08:08:20 UTC 2018

https://bugzilla.kernel.org/show_bug.cgi?id=198883

--- Comment #31 from Ricardo Ribalda (ricardo.ribalda at gmail.com) ---
Hi Andrey

I mean a stall, sorry about that.

root at qt5122:~# ps aux | grep Xorg
root       520  0.0  0.0  15936   900 ?        S    07:59   0:00 xinit
/etc/X11/Xsession -- /usr/bin/Xorg :0 -br -pn
root       541  0.2  1.3 859896 47412 ?        S<sl 07:59   0:00 /usr/bin/Xorg
:0 -br -pn
root      1072  0.0  0.0   8088  1052 pts/3    S+   08:01   0:00 grep Xorg

root at qt5122:~# gdb -p 541
GNU gdb (GDB) 8.0
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Attaching to process 541
[New LWP 614]
[New LWP 615]
[New LWP 616]
[New LWP 617]
[New LWP 618]
[New LWP 619]
[New LWP 620]
[New LWP 625]
[New LWP 636]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/libthread_db.so.1".
0x000000321c4ee1a6 in __GI_epoll_pwait (epfd=3,
events=events at entry=0x7ffc92802560, 
    maxevents=maxevents at entry=256, timeout=474326, set=set at entry=0x0)
    at
/usr/src/debug/glibc/2.26-r0/git/sysdeps/unix/sysv/linux/epoll_pwait.c:42
42        return SYSCALL_CANCEL (epoll_pwait, epfd, events, maxevents,

(gdb) thread apply all bt

Thread 10 (Thread 0x7fb4d31cd700 (LWP 636)):
#0  0x000000321c4ee1a6 in __GI_epoll_pwait (epfd=24,
events=events at entry=0x7fb4d31cc0d0, 
    maxevents=maxevents at entry=256, timeout=timeout at entry=-1, set=set at entry=0x0)
    at
/usr/src/debug/glibc/2.26-r0/git/sysdeps/unix/sysv/linux/epoll_pwait.c:42
#1  0x000000321c4ee318 in epoll_wait (epfd=<optimized out>,
events=events at entry=0x7fb4d31cc0d0, 
    maxevents=maxevents at entry=256, timeout=timeout at entry=-1)
    at /usr/src/debug/glibc/2.26-r0/git/sysdeps/unix/sysv/linux/epoll_wait.c:30
#2  0x000000000056ff24 in ospoll_wait (ospoll=0xea8b50,
timeout=timeout at entry=-1)
    at
/usr/src/debug/xserver-xorg/2_1.19.3-r0/xorg-server-1.19.3/os/ospoll.c:397
#3  0x000000000056d9b6 in InputThreadDoWork (arg=<optimized out>)
    at
/usr/src/debug/xserver-xorg/2_1.19.3-r0/xorg-server-1.19.3/os/inputthread.c:367
#4  0x000000321c807385 in start_thread (arg=0x7fb4d31cd700)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_create.c:465
#5  0x000000321c4ee03f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fb4d3fff700 (LWP 625)):
#0  0x000000321c80d2a5 in futex_wait_cancelable (private=<optimized out>,
expected=0, 
    futex_word=0xd390f4)
    at
/usr/src/debug/glibc/2.26-r0/git/sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0xd390a0, cond=0xd390c8)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0xd390c8, mutex=0xd390a0)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_cond_wait.c:655
#3  0x00007fb4e40e5243 in ?? () from /usr/lib/dri/radeonsi_dri.so
#4  0x00007fb4e40e5188 in ?? () from /usr/lib/dri/radeonsi_dri.so
#5  0x000000321c807385 in start_thread (arg=0x7fb4d3fff700)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_create.c:465
#6  0x000000321c4ee03f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fb4d93d8700 (LWP 620)):
#0  0x000000321c80d2a5 in futex_wait_cancelable (private=<optimized out>,
expected=0, 
    futex_word=0xc655f8)
    at
/usr/src/debug/glibc/2.26-r0/git/sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0xc655a8, cond=0xc655d0)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0xc655d0, mutex=0xc655a8)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_cond_wait.c:655
#3  0x00007fb4e40e5243 in ?? () from /usr/lib/dri/radeonsi_dri.so
#4  0x00007fb4e40e5188 in ?? () from /usr/lib/dri/radeonsi_dri.so
#5  0x000000321c807385 in start_thread (arg=0x7fb4d93d8700)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_create.c:465
#6  0x000000321c4ee03f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fb4d9bd9700 (LWP 619)):
#0  0x000000321c80d2a5 in futex_wait_cancelable (private=<optimized out>,
expected=0, 
    futex_word=0xc655f8)
    at
/usr/src/debug/glibc/2.26-r0/git/sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0xc655a8, cond=0xc655d0)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0xc655d0, mutex=0xc655a8)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_cond_wait.c:655
#3  0x00007fb4e40e5243 in ?? () from /usr/lib/dri/radeonsi_dri.so
#4  0x00007fb4e40e5188 in ?? () from /usr/lib/dri/radeonsi_dri.so
---Type <return> to continue, or q <return> to quit---
#5  0x000000321c807385 in start_thread (arg=0x7fb4d9bd9700)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_create.c:465
#6  0x000000321c4ee03f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fb4da3da700 (LWP 618)):
#0  0x000000321c80d2a5 in futex_wait_cancelable (private=<optimized out>,
expected=0, 
    futex_word=0xc65510)
    at
/usr/src/debug/glibc/2.26-r0/git/sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0xc654c0, cond=0xc654e8)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0xc654e8, mutex=0xc654c0)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_cond_wait.c:655
#3  0x00007fb4e40e5243 in ?? () from /usr/lib/dri/radeonsi_dri.so
#4  0x00007fb4e40e5188 in ?? () from /usr/lib/dri/radeonsi_dri.so
#5  0x000000321c807385 in start_thread (arg=0x7fb4da3da700)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_create.c:465
#6  0x000000321c4ee03f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fb4dabdb700 (LWP 617)):
#0  0x000000321c80d2a5 in futex_wait_cancelable (private=<optimized out>,
expected=0, 
    futex_word=0xc65510)
    at
/usr/src/debug/glibc/2.26-r0/git/sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0xc654c0, cond=0xc654e8)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0xc654e8, mutex=0xc654c0)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_cond_wait.c:655
#3  0x00007fb4e40e5243 in ?? () from /usr/lib/dri/radeonsi_dri.so
#4  0x00007fb4e40e5188 in ?? () from /usr/lib/dri/radeonsi_dri.so
#5  0x000000321c807385 in start_thread (arg=0x7fb4dabdb700)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_create.c:465
#6  0x000000321c4ee03f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fb4db3dc700 (LWP 616)):
#0  0x000000321c80d2a5 in futex_wait_cancelable (private=<optimized out>,
expected=0, 
    futex_word=0xc65514)
    at
/usr/src/debug/glibc/2.26-r0/git/sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0xc654c0, cond=0xc654e8)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0xc654e8, mutex=0xc654c0)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_cond_wait.c:655
#3  0x00007fb4e40e5243 in ?? () from /usr/lib/dri/radeonsi_dri.so
#4  0x00007fb4e40e5188 in ?? () from /usr/lib/dri/radeonsi_dri.so
#5  0x000000321c807385 in start_thread (arg=0x7fb4db3dc700)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_create.c:465
#6  0x000000321c4ee03f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fb4dbbdd700 (LWP 615)):
#0  0x000000321c80d2a5 in futex_wait_cancelable (private=<optimized out>,
expected=0, 
    futex_word=0xc15d10)
    at
/usr/src/debug/glibc/2.26-r0/git/sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0xc15cc0, cond=0xc15ce8)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0xc15ce8, mutex=0xc15cc0)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_cond_wait.c:655
---Type <return> to continue, or q <return> to quit---
#3  0x00007fb4e40e5243 in ?? () from /usr/lib/dri/radeonsi_dri.so
#4  0x00007fb4e40e5188 in ?? () from /usr/lib/dri/radeonsi_dri.so
#5  0x000000321c807385 in start_thread (arg=0x7fb4dbbdd700)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_create.c:465
#6  0x000000321c4ee03f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fb4e094d700 (LWP 614)):
#0  0x000000321c80d2a5 in futex_wait_cancelable (private=<optimized out>,
expected=0, 
    futex_word=0xc62760)
    at
/usr/src/debug/glibc/2.26-r0/git/sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0xc62710, cond=0xc62738)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0xc62738, mutex=0xc62710)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_cond_wait.c:655
#3  0x00007fb4e40e5243 in ?? () from /usr/lib/dri/radeonsi_dri.so
#4  0x00007fb4e40e5188 in ?? () from /usr/lib/dri/radeonsi_dri.so
#5  0x000000321c807385 in start_thread (arg=0x7fb4e094d700)
    at /usr/src/debug/glibc/2.26-r0/git/nptl/pthread_create.c:465
#6  0x000000321c4ee03f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fb4e5de18c0 (LWP 541)):
#0  0x000000321c4ee1a6 in __GI_epoll_pwait (epfd=3,
events=events at entry=0x7ffc92802560, 
    maxevents=maxevents at entry=256, timeout=474326, set=set at entry=0x0)
    at
/usr/src/debug/glibc/2.26-r0/git/sysdeps/unix/sysv/linux/epoll_pwait.c:42
#1  0x000000321c4ee318 in epoll_wait (epfd=<optimized out>,
events=events at entry=0x7ffc92802560, 
    maxevents=maxevents at entry=256, timeout=<optimized out>)
    at /usr/src/debug/glibc/2.26-r0/git/sysdeps/unix/sysv/linux/epoll_wait.c:30
#2  0x000000000056ff24 in ospoll_wait (ospoll=0xc07330, timeout=<optimized
out>)
    at
/usr/src/debug/xserver-xorg/2_1.19.3-r0/xorg-server-1.19.3/os/ospoll.c:397
#3  0x0000000000569a4b in WaitForSomething (are_ready=<optimized out>)
    at
/usr/src/debug/xserver-xorg/2_1.19.3-r0/xorg-server-1.19.3/os/WaitFor.c:226
#4  0x000000000043246b in Dispatch ()
    at
/usr/src/debug/xserver-xorg/2_1.19.3-r0/xorg-server-1.19.3/dix/dispatch.c:422
#5  0x000000000043647d in dix_main (argc=4, argv=0x7ffc92803388,
envp=<optimized out>)
    at
/usr/src/debug/xserver-xorg/2_1.19.3-r0/xorg-server-1.19.3/dix/main.c:287
#6  0x000000321c420f1c in __libc_start_main (main=0x4217e0 <main>, argc=4,
argv=0x7ffc92803388, 
    init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>,
stack_end=0x7ffc92803378)
    at /usr/src/debug/glibc/2.26-r0/git/csu/libc-start.c:308
#7  0x000000000042181a in _start () at ../sysdeps/x86_64/start.S:120
(gdb)

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