On ds., oct. 12 2019, Mateusz Guzik wrote:
Try this:
https://people.freebsd.org/~mjg/pmap-fict-invl.diff
I tested this patch on top of r353449 and a panic is still
ocurring when the drm-kmod modules are loaded.
This is on a Lenovo A485 Laptop, which is an AMD Ryzen processor
and a Radeon Vega graphics.
My last known working revision is r352987.
Here are bits of the core dump, I hope they are useful, if more
information is needed, please don't hesitate to ask.
BTW: I usually compile GENERIC-NODEBUG, if that results in the
dump being useless (sadly I can't tell), I can disable all the
performance goodies and compile GENERIC :-).
--
Evilham
Fatal trap 12: page fault while in kernel mode
cpuid = 2; apic id = 02
fault virtual address = 0xf8
fault code = supervisor read data, page not present
instruction pointer = 0x20:0xffffffff80b1be61
stack pointer = 0x28:0xfffffe00dd81ccc0
frame pointer = 0x28:0xfffffe00dd81ccf0
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = 24022 (kldload)
trap number = 12
panic: page fault
cpuid = 2
time = 1570970502
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame
0xfffffe00dd81c920
vpanic() at vpanic+0x17e/frame 0xfffffe00dd81c980
panic() at panic+0x43/frame 0xfffffe00dd81c9e0
trap_pfault() at trap_pfault/frame 0xfffffe00dd81ca50
trap_pfault() at trap_pfault+0x4f/frame 0xfffffe00dd81cac0
trap() at trap+0x288/frame 0xfffffe00dd81cbf0
calltrap() at calltrap+0x8/frame 0xfffffe00dd81cbf0
--- trap 0xc, rip = 0xffffffff80b1be61, rsp = 0xfffffe00dd81ccc0,
rbp = 0xfffffe00dd81ccf0 ---
pfs_destroy() at pfs_destroy+0x11/frame 0xfffffe00dd81ccf0
pfs_uninit() at pfs_uninit+0x16/frame 0xfffffe00dd81cd10
vfs_modevent() at vfs_modevent+0x474/frame 0xfffffe00dd81cd50
module_register_init() at module_register_init+0xa4/frame
0xfffffe00dd81cd80
linker_load_module() at linker_load_module+0xb49/frame
0xfffffe00dd81d0a0
linker_load_dependencies() at linker_load_dependencies+0x18c/frame
0xfffffe00dd81d0f0
link_elf_load_file() at link_elf_load_file+0x1127/frame
0xfffffe00dd81d1b0
linker_load_module() at linker_load_module+0x89a/frame
0xfffffe00dd81d4d0
linker_load_dependencies() at linker_load_dependencies+0x18c/frame
0xfffffe00dd81d520
link_elf_load_file() at link_elf_load_file+0x1127/frame
0xfffffe00dd81d5e0
linker_load_module() at linker_load_module+0x89a/frame
0xfffffe00dd81d900
kern_kldload() at kern_kldload+0xbd/frame 0xfffffe00dd81d950
sys_kldload() at sys_kldload+0x5b/frame 0xfffffe00dd81d980
amd64_syscall() at amd64_syscall+0x3a3/frame 0xfffffe00dd81dab0
fast_syscall_common() at fast_syscall_common+0x101/frame
0xfffffe00dd81dab0
--- syscall (304, FreeBSD ELF64, sys_kldload), rip = 0x8002d1cda,
rsp = 0x7fffffffd748, rbp = 0x7fffffffdcc0 ---
KDB: enter: panic
__curthread () at /freebsd/src/sys/amd64/include/pcpu_aux.h:55
55 __asm("movq %%gs:%P1,%0" : "=r" (td) : "n"
(offsetof(struct pcpu,
(kgdb) #0 __curthread () at
/freebsd/src/sys/amd64/include/pcpu_aux.h:55
#1 doadump (textdump=0) at
/freebsd/src/sys/kern/kern_shutdown.c:392
#2 0xffffffff80496a7a in db_dump (dummy=<optimized out>,
dummy2=<unavailable>, dummy3=<unavailable>,
dummy4=<unavailable>)
at /freebsd/src/sys/ddb/db_command.c:575
#3 0xffffffff8049683c in db_command (last_cmdp=<optimized out>,
cmd_table=<optimized out>, dopager=1)
at /freebsd/src/sys/ddb/db_command.c:482
#4 0xffffffff804965ad in db_command_loop ()
at /freebsd/src/sys/ddb/db_command.c:535
#5 0xffffffff80499858 in db_trap (type=<optimized out>,
code=<optimized out>)
at /freebsd/src/sys/ddb/db_main.c:252
#6 0xffffffff80c322a7 in kdb_trap (type=3, code=0, tf=<optimized
out>)
at /freebsd/src/sys/kern/subr_kdb.c:692
#7 0xffffffff8105d925 in trap (frame=0xfffffe00dd81c850)
at /freebsd/src/sys/amd64/amd64/trap.c:585
#8 <signal handler called>
#9 kdb_enter (why=0xffffffff811dee7e "panic", msg=<optimized
out>)
at /freebsd/src/sys/kern/subr_kdb.c:479
#10 0xffffffff80be377a in vpanic (fmt=<optimized out>,
ap=<optimized out>)
at /freebsd/src/sys/kern/kern_shutdown.c:897
#11 0xffffffff80be35d3 in panic (
fmt=0xffffffff818e4c18 <vt_conswindow+16>
"\357\327\037\201\377\377\377\377") at
/freebsd/src/sys/kern/kern_shutdown.c:835
#12 0xffffffff8105ddb0 in trap_fatal (frame=0xfffffe00dd81cc00,
eva=248)
at /freebsd/src/sys/amd64/amd64/trap.c:925
#13 0xffffffff8105ddff in trap_pfault (frame=0xfffffe00dd81cc00,
usermode=<optimized out>, signo=<optimized out>,
ucode=<optimized out>)
at /freebsd/src/sys/amd64/amd64/trap.c:743
#14 0xffffffff8105d458 in trap (frame=0xfffffe00dd81cc00)
at /freebsd/src/sys/amd64/amd64/trap.c:407
#15 <signal handler called>
#16 pfs_destroy (pn=0x0) at
/freebsd/src/sys/fs/pseudofs/pseudofs.c:324
#17 0xffffffff80b1ca96 in pfs_uninit (
pi=0xffffffff8360f120 <anon_inodefs_info>,
vfc=0xffffffff8360f010 <anon_inodefs_vfsconf>)
at /freebsd/src/sys/fs/pseudofs/pseudofs.c:473
#18 0xffffffff80caddd4 in vfs_register (
vfc=0xffffffff8360f010 <anon_inodefs_vfsconf>)
at /freebsd/src/sys/kern/vfs_init.c:497
#19 vfs_modevent (mod=<optimized out>, type=<optimized out>,
data=0xffffffff8360f010 <anon_inodefs_vfsconf>)
at /freebsd/src/sys/kern/vfs_init.c:582
#20 0xffffffff80bc0b24 in module_register_init (
arg=0xffffffff8360eff8 <anon_inodefs_mod>)
at /freebsd/src/sys/kern/kern_module.c:123
#21 0xffffffff80bb26b9 in linker_file_sysinit (lf=<optimized out>)
at /freebsd/src/sys/kern/kern_linker.c:236
#22 linker_load_file (filename=<optimized out>, result=<optimized
out>)
at /freebsd/src/sys/kern/kern_linker.c:462
#23 linker_load_module (kldname=<optimized out>,
modname=0xffffffff835d4c80 "linuxkpi_gplv2", parent=<optimized
out>,
verinfo=<optimized out>, lfpp=<optimized out>)
at /freebsd/src/sys/kern/kern_linker.c:2110
#24 0xffffffff80bb4eec in linker_load_dependencies
(lf=0xfffff800060dcc00)
at /freebsd/src/sys/kern/kern_linker.c:2200
#25 0xffffffff810d6027 in link_elf_load_file (cls=<optimized out>,
filename=0xfffff8000645bcc0 "/boot/modules/drm.ko",
result=0xfffffe00dd81d358) at
/freebsd/src/sys/kern/link_elf_obj.c:1004
#26 0xffffffff80bb240a in LINKER_LOAD_FILE (
cls=0xffffffff81972e90 <link_elf_class>, filename=<optimized
out>,
result=<optimized out>) at ./linker_if.h:180
#27 linker_load_file (filename=<optimized out>, result=<optimized
out>)
at /freebsd/src/sys/kern/kern_linker.c:447
#28 linker_load_module (kldname=<optimized out>,
modname=0xffffffff83542bc4 "drmn", parent=<optimized out>,
verinfo=<optimized out>, lfpp=<optimized out>)
at /freebsd/src/sys/kern/kern_linker.c:2110
#29 0xffffffff80bb4eec in linker_load_dependencies
(lf=0xfffff800060db200)
at /freebsd/src/sys/kern/kern_linker.c:2200
#30 0xffffffff810d6027 in link_elf_load_file (cls=<optimized out>,
filename=0xfffff8000503ed80 "/boot/modules/amdgpu.ko",
result=0xfffffe00dd81d788) at
/freebsd/src/sys/kern/link_elf_obj.c:1004
#31 0xffffffff80bb240a in LINKER_LOAD_FILE (
cls=0xffffffff81972e90 <link_elf_class>, filename=<optimized
out>,
result=<optimized out>) at ./linker_if.h:180
#32 linker_load_file (filename=<optimized out>, result=<optimized
out>)
at /freebsd/src/sys/kern/kern_linker.c:447
#33 linker_load_module (kldname=<optimized out>,
modname=0xfffff8000612b000 "amdgpu", parent=<optimized out>,
verinfo=<optimized out>, lfpp=<optimized out>)
at /freebsd/src/sys/kern/kern_linker.c:2110
#34 0xffffffff80bb3f2d in kern_kldload (td=<optimized out>,
file=<optimized out>, fileid=0xfffffe00dd81d964)
at /freebsd/src/sys/kern/kern_linker.c:1089
#35 0xffffffff80bb406b in sys_kldload (td=0xfffff800125d8000,
uap=<optimized out>) at
/freebsd/src/sys/kern/kern_linker.c:1115
#36 0xffffffff8105e973 in syscallenter (td=0xfffff800125d8000)
at /freebsd/src/sys/amd64/amd64/../../kern/subr_syscall.c:144
#37 amd64_syscall (td=0xfffff800125d8000, traced=0)
at /freebsd/src/sys/amd64/amd64/trap.c:1162
#38 <signal handler called>
#39 0x00000008002d1cda in ?? ()
Backtrace stopped: Cannot access memory at address 0x7fffffffd748
(kgdb)
