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kernel panic when loading i915kms on Skylake and rev 6463da5 #54

Closed nomadlogic closed 7 years ago

nomadlogic commented 7 years ago

just upgraded my system to this: FreeBSD boomers 12.0-CURRENT FreeBSD 12.0-CURRENT #0 6463da5(master): Mon Jul 18 20:38:17 PDT 2016 root@boomers:/usr/obj/usr/home/pwright/git /freebsd-base-graphics/sys/GENERIC amd64

I am getting a kernel panic when i boot this system, specifically when the i915kms kernel module is being loaded. here is the bt:

FreeBSD boomers 12.0-CURRENT FreeBSD 12.0-CURRENT #0 6463da5(master): Mon Jul 18 20:38:17 PDT 2016     root@boomers:/usr/obj/usr/home/pwright/git/freebsd-base-graphics/sys/GENERIC  amd64

panic: bogus refcnt 0 on lle 0xfffff8012ff45a00

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Unread portion of the kernel message buffer:
panic: bogus refcnt 0 on lle 0xfffff8012ff45a00
cpuid = 1
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe022fed6370
vpanic() at vpanic+0x182/frame 0xfffffe022fed63f0
kassert_panic() at kassert_panic+0x126/frame 0xfffffe022fed6460
llentry_free() at llentry_free+0x136/frame 0xfffffe022fed6490
in_lltable_free_entry() at in_lltable_free_entry+0xb0/frame 0xfffffe022fed64c0
htable_prefix_free() at htable_prefix_free+0xce/frame 0xfffffe022fed6520
lltable_prefix_free() at lltable_prefix_free+0x5d/frame 0xfffffe022fed6560
in_scrubprefix() at in_scrubprefix+0x290/frame 0xfffffe022fed6600
in_difaddr_ioctl() at in_difaddr_ioctl+0x285/frame 0xfffffe022fed6650
in_control() at in_control+0x96/frame 0xfffffe022fed66d0
ifioctl() at ifioctl+0xda1/frame 0xfffffe022fed6760
kern_ioctl() at kern_ioctl+0x246/frame 0xfffffe022fed67c0
sys_ioctl() at sys_ioctl+0x171/frame 0xfffffe022fed68a0
amd64_syscall() at amd64_syscall+0x2db/frame 0xfffffe022fed69b0
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe022fed69b0
--- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x800fd2e5a, rsp = 0x7fffffffe358, rbp = 0x7fffffffe3a0 ---
KDB: enter: panic
<snip>
Loaded symbols for /boot/kernel/ums.ko
#0  doadump (textdump=0) at pcpu.h:221
221     pcpu.h: No such file or directory.
        in pcpu.h
(kgdb) #0  doadump (textdump=0) at pcpu.h:221
#1  0xffffffff80391fdb in db_dump (dummy=<value optimized out>, dummy2=false, 
    dummy3=0, dummy4=0x0)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/ddb/db_command.c:533
#2  0xffffffff80391dd9 in db_command (cmd_table=<value optimized out>)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/ddb/db_command.c:440
#3  0xffffffff80391b34 in db_command_loop ()
    at /usr/home/pwright/git/freebsd-base-graphics/sys/ddb/db_command.c:493
#4  0xffffffff80394a6b in db_trap (type=<value optimized out>, 
    code=<value optimized out>)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/ddb/db_main.c:251
#5  0xffffffff80a89d43 in kdb_trap (type=<value optimized out>, 
    code=<value optimized out>, tf=<value optimized out>)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/kern/subr_kdb.c:654
#6  0xffffffff80eb9a4d in trap (frame=0xfffffe022fed62a0)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/amd64/amd64/trap.c:556
#7  0xffffffff80e9a191 in calltrap ()
    at /usr/home/pwright/git/freebsd-base-graphics/sys/amd64/amd64/exception.S:236
#8  0xffffffff80a893eb in kdb_enter (why=0xffffffff813e339e "panic", 
    msg=0x80 <Address 0x80 out of bounds>) at cpufunc.h:63
#9  0xffffffff80a49eff in vpanic (fmt=<value optimized out>, 
    ap=0xfffffe022fed6430)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/kern/kern_shutdown.c:752
#10 0xffffffff80a49d56 in kassert_panic (fmt=<value optimized out>)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/kern/kern_shutdown.c:649
#11 0xffffffff80b3c126 in llentry_free (lle=<value optimized out>)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/net/if_llatbl.c:432
#12 0xffffffff80ba5300 in in_lltable_free_entry (llt=0xfffff80004585b00, 
    lle=0xfffff8012ff45a00)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/netinet/in.c:1144
#13 0xffffffff80b3c9fe in htable_prefix_free (llt=<value optimized out>, 
    addr=<value optimized out>, mask=<value optimized out>, 
    flags=<value optimized out>)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/net/if_llatbl.c:673
#14 0xffffffff80b3c6cd in lltable_prefix_free (af=<value optimized out>, 
    addr=<value optimized out>, mask=<value optimized out>, 
    flags=<value optimized out>)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/net/if_llatbl.c:599
#15 0xffffffff80ba43c0 in in_scrubprefix (target=<value optimized out>, 
    flags=<value optimized out>)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/netinet/in.c:757
#16 0xffffffff80ba3df5 in in_difaddr_ioctl (data=<value optimized out>, 
    ifp=<value optimized out>, td=<value optimized out>)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/netinet/in.c:608
#17 0xffffffff80ba2fc6 in in_control (so=<value optimized out>, 
    cmd=2149607705, data=0xfffffe022fed67f0 "em0", ifp=0xfffff80004d2a000, 
    td=0xfffff800406b9500)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/netinet/in.c:248
#18 0xffffffff80b33f81 in ifioctl (so=<value optimized out>, 
    cmd=<value optimized out>, data=<value optimized out>, 
    td=<value optimized out>)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/net/if.c:2840
#19 0xffffffff80aadfd6 in kern_ioctl (td=<value optimized out>, 
    fd=<value optimized out>, com=<value optimized out>, 
    data=<value optimized out>) at file.h:327
#20 0xffffffff80aadd21 in sys_ioctl (td=<value optimized out>, 
    uap=0xfffffe022fed6940)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/kern/sys_generic.c:746
#21 0xffffffff80ebab2b in amd64_syscall (td=0xfffff800406b9500, traced=0)
    at subr_syscall.c:135
#22 0xffffffff80e9a47b in Xfast_syscall ()
    at /usr/home/pwright/git/freebsd-base-graphics/sys/amd64/amd64/exception.S:396
#23 0x0000000800fd2e5a in ?? ()
Previous frame inner to this frame (corrupt stack?)
Current language:  auto; currently minimal
(kgdb)
nomadlogic commented 7 years ago

ok, after rebuilding locally it looks like i'm on the correct kernel revision. i am able to reproduce this panic by loading the i915kms.ko:

FreeBSD boomers 12.0-CURRENT FreeBSD 12.0-CURRENT #1 e342f05(drm-next-4.6): Wed Jul 20 21:32:19 PDT 2016 root@boomers:/usr/obj/usr/home/pwright/git/freebsd-base-graphics/sys/GENERIC amd64

here is a back trace:

<6>[drm] failed to retrieve link info, disabling eDP
panic: pfs_destroy(): node is NULL
cpuid = 4
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe023035c480
vpanic() at vpanic+0x182/frame 0xfffffe023035c500
kassert_panic() at kassert_panic+0x126/frame 0xfffffe023035c570
pfs_destroy() at pfs_destroy+0x1d6/frame 0xfffffe023035c5a0
sysfs_remove_dir() at sysfs_remove_dir+0x2a/frame 0xfffffe023035c5d0
kobject_del() at kobject_del+0x25/frame 0xfffffe023035c5f0
linux_kobject_release() at linux_kobject_release+0x49/frame 0xfffffe023035c630
kref_put() at kref_put+0x2c/frame 0xfffffe023035c660
kobject_put() at kobject_put+0x2e/frame 0xfffffe023035c680
put_device() at put_device+0x27/frame 0xfffffe023035c6a0
device_unregister() at device_unregister+0x84/frame 0xfffffe023035c6d0
i2c_del_adapter() at i2c_del_adapter+0x85/frame 0xfffffe023035c700
intel_dp_aux_fini() at intel_dp_aux_fini+0x19/frame 0xfffffe023035c720
intel_dp_init_connector() at intel_dp_init_connector+0xd2b/frame 0xfffffe023035c980
intel_ddi_init_dp_connector() at intel_ddi_init_dp_connector+0x63/frame 0xfffffe023035c9b0
intel_ddi_init() at intel_ddi_init+0x48a/frame 0xfffffe023035ca90
intel_setup_outputs() at intel_setup_outputs+0x1ae/frame 0xfffffe023035cdd0
intel_modeset_init() at intel_modeset_init+0x742/frame 0xfffffe023035cf80
i915_load_modeset_init() at i915_load_modeset_init+0x114/frame 0xfffffe023035d010
i915_driver_load() at i915_driver_load+0x75b/frame 0xfffffe023035d170
drm_dev_register() at drm_dev_register+0x78/frame 0xfffffe023035d1a0
drm_get_pci_dev() at drm_get_pci_dev+0x1d9/frame 0xfffffe023035d220
i915_pci_probe() at i915_pci_probe+0x9e/frame 0xfffffe023035d260
linux_pci_attach() at linux_pci_attach+0x4a0/frame 0xfffffe023035d340
device_attach() at device_attach+0x420/frame 0xfffffe023035d3a0
bus_generic_driver_added() at bus_generic_driver_added+0x96/frame 0xfffffe023035d3c0
devclass_driver_added() at devclass_driver_added+0x7d/frame 0xfffffe023035d400
devclass_add_driver() at devclass_add_driver+0x181/frame 0xfffffe023035d440
pci_register_driver() at pci_register_driver+0x133/frame 0xfffffe023035d4a0
i915_init() at i915_init+0xd5/frame 0xfffffe023035d4c0
_module_run() at _module_run+0xdb/frame 0xfffffe023035d510
linker_load_module() at linker_load_module+0xc88/frame 0xfffffe023035d830
kern_kldload() at kern_kldload+0xa7/frame 0xfffffe023035d870
sys_kldload() at sys_kldload+0x5b/frame 0xfffffe023035d8a0
amd64_syscall() at amd64_syscall+0x2db/frame 0xfffffe023035d9b0
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe023035d9b0
--- syscall (304, FreeBSD ELF64, sys_kldload), rip = 0x80086d38a, rsp = 0x7fffffffe678, rbp = 0x7fffffffeb90 ---
KDB: enter: panic

and some more info here:


(kgdb) bt
#0  doadump (textdump=0) at pcpu.h:221
#1  0xffffffff8039111b in db_dump (dummy=<value optimized out>, dummy2=false, dummy3=0, dummy4=0x0)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/ddb/db_command.c:533
#2  0xffffffff80390f19 in db_command (cmd_table=<value optimized out>)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/ddb/db_command.c:440
#3  0xffffffff80390c74 in db_command_loop () at /usr/home/pwright/git/freebsd-base-graphics/sys/ddb/db_command.c:493
#4  0xffffffff80393bab in db_trap (type=<value optimized out>, code=<value optimized out>)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/ddb/db_main.c:251
#5  0xffffffff80a8ac63 in kdb_trap (type=<value optimized out>, code=<value optimized out>, tf=<value optimized out>)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/kern/subr_kdb.c:654
#6  0xffffffff80ebba4d in trap (frame=0xfffffe023035c3b0)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/amd64/amd64/trap.c:556
#7  0xffffffff80e9c0c1 in calltrap () at /usr/home/pwright/git/freebsd-base-graphics/sys/amd64/amd64/exception.S:236
#8  0xffffffff80a8a30b in kdb_enter (why=0xffffffff8138ff76 "panic", msg=0x80 <Address 0x80 out of bounds>) at cpufunc.h:63
#9  0xffffffff80a4a0cf in vpanic (fmt=<value optimized out>, ap=0xfffffe023035c540)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/kern/kern_shutdown.c:760
#10 0xffffffff80a49f26 in kassert_panic (fmt=<value optimized out>)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/kern/kern_shutdown.c:649
#11 0xffffffff8098de26 in pfs_destroy (pn=0x0) at /usr/home/pwright/git/freebsd-base-graphics/sys/fs/pseudofs/pseudofs.c:291
#12 0xffffffff82ec393a in sysfs_remove_dir (kobj=0xfffff801601c91d0)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/modules/linuxkpi/../../compat/linsysfs/linsysfs_extern.c:338
#13 0xffffffff82ea5ce5 in kobject_del (kobj=0xfffff801601c91d0) at kobject.h:208
#14 0xffffffff82ea5c69 in linux_kobject_release (kref=0xfffff801601c91e0)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/modules/linuxkpi/../../compat/linuxkpi/common/src/linux_compat.c:356
#15 0xffffffff82eb095c in kref_put (kref=0xfffff801601c91e0, rel=0xffffffff82ea5c20 <linux_kobject_release>) at kref.h:66
#16 0xffffffff82eb091e in kobject_put (kobj=0xfffff801601c91d0) at kobject.h:148
#17 0xffffffff82eb08e7 in put_device (dev=0xfffff801601c9198) at device.h:297
#18 0xffffffff82eaf244 in device_unregister (dev=0xfffff801601c9198) at device.h:486
#19 0xffffffff82eaf165 in i2c_del_adapter (adap=0xfffff801601c9150)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/modules/linuxkpi/../../compat/linuxkpi/common/src/linux_i2c.c:494
#20 0xffffffff82d13b89 in intel_dp_aux_fini (intel_dp=0xfffff801601c90d8)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/modules/drm2/i915/i915kms/../../../../dev/drm2/i915/intel_dp.c:1188
#21 0xffffffff82d124ab in intel_dp_init_connector (intel_dig_port=0xfffff801601c9000, intel_connector=0xfffff801601c6000)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/modules/drm2/i915/i915kms/../../../../dev/drm2/i915/intel_dp.c:5971
#22 0xffffffff82cbd2d3 in intel_ddi_init_dp_connector (intel_dig_port=0xfffff801601c9000)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/modules/drm2/i915/i915kms/../../../../dev/drm2/i915/intel_ddi.c:3245
#23 0xffffffff82cbcbba in intel_ddi_init (dev=0xfffff80160190000, port=PORT_A)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/modules/drm2/i915/i915kms/../../../../dev/drm2/i915/intel_ddi.c:3359
#24 0xffffffff82cd451e in intel_setup_outputs (dev=0xfffff80160190000)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/modules/drm2/i915/i915kms/../../../../dev/drm2/i915/intel_display.c:14485
#25 0xffffffff82cd2762 in intel_modeset_init (dev=0xfffff80160190000)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/modules/drm2/i915/i915kms/../../../../dev/drm2/i915/intel_display.c:15424
#26 0xffffffff82c3ed64 in i915_load_modeset_init (dev=0xfffff80160190000)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/modules/drm2/i915/i915kms/../../../../dev/drm2/i915/i915_dma.c:410
#27 0xffffffff82c3d3bb in i915_driver_load (dev=0xfffff80160190000, flags=18446744071610063040)
---Type <return> to continue, or q <return> to quit---
    at /usr/home/pwright/git/freebsd-base-graphics/sys/modules/drm2/i915/i915kms/../../../../dev/drm2/i915/i915_dma.c:1136
#28 0xffffffff82e3b288 in drm_dev_register (dev=0xfffff80160190000, flags=18446744071610063040)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/modules/drm2/drm2/../../../dev/drm2/drm_drv.c:770
#29 0xffffffff82e56c89 in drm_get_pci_dev (pdev=0xfffff80008a1d800, ent=0xffffffff82dc4910, driver=<value optimized out>)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/modules/drm2/drm2/../../../dev/drm2/drm_pci.c:323
#30 0xffffffff82c46dbe in i915_pci_probe (pdev=0xfffff80008a1d800, ent=0xffffffff82dc4910)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/modules/drm2/i915/i915kms/../../../../dev/drm2/i915/i915_drv.c:1008
#31 0xffffffff82eb6ec0 in linux_pci_attach (dev=0xfffff80004953b00)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/modules/linuxkpi/../../compat/linuxkpi/common/src/linux_pci.c:227
#32 0xffffffff80a7e890 in device_attach (dev=0xfffff80004953b00) at device_if.h:180
#33 0xffffffff80a7ff76 in bus_generic_driver_added (dev=<value optimized out>, driver=<value optimized out>)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/kern/subr_bus.c:2858
#34 0xffffffff80a7c25d in devclass_driver_added (dc=<value optimized out>, driver=<value optimized out>) at bus_if.h:204
#35 0xffffffff80a7c181 in devclass_add_driver (dc=<value optimized out>, driver=<value optimized out>, 
    pass=<value optimized out>, dcp=<value optimized out>)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/kern/subr_bus.c:1172
#36 0xffffffff82eb5463 in pci_register_driver (pdrv=0xffffffff82dfabe0)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/modules/linuxkpi/../../compat/linuxkpi/common/src/linux_pci.c:350
#37 0xffffffff82c46cd5 in i915_init ()
    at /usr/home/pwright/git/freebsd-base-graphics/sys/modules/drm2/i915/i915kms/../../../../dev/drm2/i915/i915_drv.c:1799
#38 0xffffffff82c46b7b in _module_run (arg=0xffffffff82c46c00) at module.h:80
#39 0xffffffff80a1d468 in linker_load_module (kldname=<value optimized out>, modname=0xfffff800087f9800 "i915kms", 
    parent=<value optimized out>, verinfo=<value optimized out>, lfpp=<value optimized out>)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/kern/kern_linker.c:234
#40 0xffffffff80a1eac7 in kern_kldload (td=<value optimized out>, file=<value optimized out>, fileid=0xfffffe023035d884)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/kern/kern_linker.c:1041
#41 0xffffffff80a1eb8b in sys_kldload (td=0xfffff8000c088000, uap=<value optimized out>)
    at /usr/home/pwright/git/freebsd-base-graphics/sys/kern/kern_linker.c:1067
#42 0xffffffff80ebcb2b in amd64_syscall (td=0xfffff8000c088000, traced=0) at subr_syscall.c:135
#43 0xffffffff80e9c3ab in Xfast_syscall () at /usr/home/pwright/git/freebsd-base-graphics/sys/amd64/amd64/exception.S:396
#44 0x000000080086d38a in ?? ()
mattmacy commented 7 years ago

Try updating to https://github.com/FreeBSDDesktop/freebsd-base-graphics/commit/535f0c128f22d6b05651a97c99175aae82ffa61d

nomadlogic commented 7 years ago

that did it, able to load i915kms now - testing X but will close this issue. thanks!