Date: Thu, 12 Jan 2017 10:07:37 +0000 From: Anindya Mukherjee <anindya49@hotmail.com> To: "freebsd-x11@freebsd.org" <freebsd-x11@freebsd.org> Subject: Crash with radeonkms Message-ID: <BN6PR22MB080230C1AB38509A1B1884E7B6790@BN6PR22MB0802.namprd22.prod.outlook.com>
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I am trying to run X compiled the drm-next and xserver-next-udev branches o=
n a machine with a Radeon 2400XT card. The startx command results in an ins=
tant crash. Here is some info from a kgdb run:
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you ar=
e
welcome to change it and/or distribute copies of it under certain condition=
s.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for details.
This GDB was configured as "amd64-marcel-freebsd"...
Unread portion of the kernel message buffer:
trap number =3D 9
panic: general protection fault
cpuid =3D 3
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe02325b3=
fd0
vpanic() at vpanic+0x186/frame 0xfffffe02325b4050
panic() at panic+0x43/frame 0xfffffe02325b40b0
trap_fatal() at trap_fatal+0x322/frame 0xfffffe02325b4100
trap() at trap+0x714/frame 0xfffffe02325b42c0
calltrap() at calltrap+0x8/frame 0xfffffe02325b42c0
--- trap 0x9, rip =3D 0xffffffff80994524, rsp =3D 0xfffffe02325b4390, rbp =
=3D 0xfffffe02325b43b0 ---
pfs_destroy() at pfs_destroy+0x34/frame 0xfffffe02325b43b0
linsysfs_destroy_class_dir() at linsysfs_destroy_class_dir+0x17/frame 0xfff=
ffe02325b43d0
backlight_class_exit() at backlight_class_exit+0x1b/frame 0xfffffe02325b43f=
0
_module_run() at _module_run+0x9b/frame 0xfffffe02325b4430
linker_file_unload() at linker_file_unload+0x45f/frame 0xfffffe02325b4490
linker_file_unload() at linker_file_unload+0x603/frame 0xfffffe02325b44f0
linker_file_unload() at linker_file_unload+0x603/frame 0xfffffe02325b4550
link_elf_load_file() at link_elf_load_file+0x44a/frame 0xfffffe02325b46f0
linker_load_module() at linker_load_module+0x9cf/frame 0xfffffe02325b4a00
kern_kldload() at kern_kldload+0xa7/frame 0xfffffe02325b4a40
sys_kldload() at sys_kldload+0x5b/frame 0xfffffe02325b4a70
amd64_syscall() at amd64_syscall+0x2f9/frame 0xfffffe02325b4bf0
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe02325b4bf0
--- syscall (304, FreeBSD ELF64, sys_kldload), rip =3D 0x8023f250a, rsp =3D=
0x7fffffffe9f8, rbp =3D 0x7fffffffea60 ---
Uptime: 51s
Dumping 444 out of 8030 MB:..4%..11%..22%..33%..44%..51%..62%..72%..83%..94=
%
Reading symbols from /boot/kernel/ums.ko...Reading symbols from /usr/lib/de=
bug//boot/kernel/ums.ko.debug...done.
done.
Loaded symbols for /boot/kernel/ums.ko
Reading symbols from /boot/kernel/uhid.ko...Reading symbols from /usr/lib/d=
ebug//boot/kernel/uhid.ko.debug...done.
done.
Loaded symbols for /boot/kernel/uhid.ko
Reading symbols from /boot/kernel/linuxkpi.ko...Reading symbols from /usr/l=
ib/debug//boot/kernel/linuxkpi.ko.debug...done.
done.
Loaded symbols for /boot/kernel/linuxkpi.ko
Reading symbols from /boot/kernel/linux_common.ko...Reading symbols from /u=
sr/lib/debug//boot/kernel/linux_common.ko.debug...done.
done.
Loaded symbols for /boot/kernel/linux_common.ko
#0 doadump (textdump=3D1) at pcpu.h:222
222 __asm("movq %%gs:%1,%0" : "=3Dr" (td)
(kgdb) bt
#0 doadump (textdump=3D1) at pcpu.h:222
#1 0xffffffff80a4c545 in kern_reboot (howto=3D<value optimized out>) at /u=
sr/home/anindya/graphics/freebsd-base-graphics/sys/kern/kern_shutdown.c:386
#2 0xffffffff80a4cb20 in vpanic (fmt=3D<value optimized out>, ap=3D<value =
optimized out>) at /usr/home/anindya/graphics/freebsd-base-graphics/sys/ker=
n/kern_shutdown.c:787
#3 0xffffffff80a4cb63 in panic (fmt=3D<value optimized out>) at /usr/home/=
anindya/graphics/freebsd-base-graphics/sys/kern/kern_shutdown.c:710
#4 0xffffffff80eba2f2 in trap_fatal (frame=3D0xfffffe02325b42d0, eva=3D0) =
at /usr/home/anindya/graphics/freebsd-base-graphics/sys/amd64/amd64/trap.c:=
801
#5 0xffffffff80eb9f74 in trap (frame=3D0xfffffe02325b42d0) at /usr/home/an=
indya/graphics/freebsd-base-graphics/sys/amd64/amd64/trap.c:198
#6 0xffffffff80e9aa61 in calltrap () at /usr/home/anindya/graphics/freebsd=
-base-graphics/sys/amd64/amd64/exception.S:236G
#7 0xffffffff80994524 in pfs_destroy (pn=3D0xfffff800384a8400) at /usr/hom=
e/anindya/graphics/freebsd-base-graphics/sys/fs/pseudofs/pseudofs.c:296
#8 0xffffffff82523697 in linsysfs_destroy_class_dir (class=3D0xfffff800384=
b5e00) at /usr/home/anindya/graphics/freebsd-base-graphics/sys/modules/linu=
xkpi/../../compat/linsysfs/linsysfs_init.c:291
#9 0xffffffff8250a04b in backlight_class_exit () at device.h:349
#10 0xffffffff82509a9b in _module_run (arg=3D<value optimized out>) at modu=
le.h:80
#11 0xffffffff80a20e5f in linker_file_unload (file=3D<value optimized out>,=
flags=3D<value optimized out>) at /usr/home/anindya/graphics/freebsd-base-=
graphics/sys/kern/kern_linker.c:284
#12 0xffffffff80a21003 in linker_file_unload (file=3D<value optimized out>,=
flags=3D<value optimized out>) at /usr/home/anindya/graphics/freebsd-base-=
graphics/sys/kern/kern_linker.c:701
#13 0xffffffff80a21003 in linker_file_unload (file=3D<value optimized out>,=
flags=3D<value optimized out>) at /usr/home/anindya/graphics/freebsd-base-=
graphics/sys/kern/kern_linker.c:701
#14 0xffffffff80f81dea in link_elf_load_file (cls=3D<value optimized out>, =
filename=3D<value optimized out>, result=3D<value optimized out>)
at /usr/home/anindya/graphics/freebsd-base-graphics/sys/kern/link_elf_o=
bj.c:960
#15 0xffffffff80a204df in linker_load_module (kldname=3D<value optimized ou=
t>, modname=3D0xfffff800060ebc00 "radeonkms", parent=3D<value optimized out=
>, verinfo=3D0x0, lfpp=3D<value optimized out>) at linker_if.h:161
#16 0xffffffff80a21d27 in kern_kldload (td=3D<value optimized out>, file=3D=
<value optimized out>, fileid=3D0xfffffe02325b4a54) at /usr/home/anindya/gr=
aphics/freebsd-base-graphics/sys/kern/kern_linker.c:1041
#17 0xffffffff80a21deb in sys_kldload (td=3D0xfffff80007b50a20, uap=3D<valu=
e optimized out>) at /usr/home/anindya/graphics/freebsd-base-graphics/sys/k=
ern/kern_linker.c:1067
#18 0xffffffff80ebaab9 in amd64_syscall (td=3D0xfffff80007b50a20, traced=3D=
0) at subr_syscall.c:135
#19 0xffffffff80e9ad4b in Xfast_syscall () at /usr/home/anindya/graphics/fr=
eebsd-base-graphics/sys/amd64/amd64/exception.S:396
#20 0x00000008023f250a in ?? ()
Previous frame inner to this frame (corrupt stack?)
Current language: auto; currently minimal
(kgdb) f 10
#10 0xffffffff82509a9b in _module_run (arg=3D<value optimized out>) at modu=
le.h:80
80 fn();
(kgdb) f 9
#9 0xffffffff8250a04b in backlight_class_exit () at device.h:349
349 linsysfs_destroy_class_dir(class);
(kgdb) f 8
#8 0xffffffff82523697 in linsysfs_destroy_class_dir (class=3D0xfffff800384=
b5e00) at /usr/home/anindya/graphics/freebsd-base-graphics/sys/modules/linu=
xkpi/../../compat/linsysfs/linsysfs_init.c:291
291 pfs_destroy(class->sd);
(kgdb) p *class->sd
$1 =3D {
pn_name =3D 0xfffff800384a8400 "***JUNK***"..., pn_type =3D 3735929054, p=
n_flags =3D -559038242, pn_mutex =3D {lock_object =3D {l
lo_data =3D 3735929054, lo_witness =3D 0xdeadc0dedeadc0de}, mtx_lock =
=3D 16045693110842147038}, pn_data =3D 0xdeadc0dedeadc0de, pn_fill =3D 0xde=
adc0dedeadc0de, pn_ioctl =3D 0xdeadc0dedeadc0de,=20
pn_close =3D 0xdeadc0dedeadc0de, pn_attr =3D 0xdeadc0dedeadc0de, pn_vis =
=3D 0xdeadc0dedeadc0de, pn_getextattr =3D 0xdeadc0dedeadc0de, pn_destroy =
=3D 0xdeadc0dedeadc0de, pn_info =3D 0xdeadc0dedeadc0de,=20
pn_fileno =3D 3735929054, pn_parent =3D 0xdeadc0dedeadc0de, pn_nodes =3D =
0xdeadc0dedeadc0de, pn_next =3D 0xdeadc0dedeadc0de}
(kgdb) f 7
#7 0xffffffff80994524 in pfs_destroy (pn=3D0xfffff800384a8400) at /usr/hom=
e/anindya/graphics/freebsd-base-graphics/sys/fs/pseudofs/pseudofs.c:296
296 if (pn->pn_parent)
(kgdb) f 6
#6 0xffffffff80e9aa61 in calltrap () at /usr/home/anindya/graphics/freebsd=
-base-graphics/sys/amd64/amd64/exception.S:236
236 call trap_check
Current language: auto; currently asm
(kgdb)
Looks like some dangling pointers. This does not yet have Johannes' updates=
. I'll try rebuilding with those.
Anindya=
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