[Bug 236918] Crash: in iwn_ampdu_tx_stop (or ieee80211_ht_node_cleanup)

Mon Apr 8 18:30:01 UTC 2019

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236918

--- Comment #1 from admin-freebsd-bugzilla at 927589452.de ---
after a wakeup

and a service netif restart

(kgdb) bt
#0  sched_switch (td=0xfffff80010ab2000, newtd=0xfffff80006f29000, 
    flags=<optimized out>) at /usr/src/sys/kern/sched_ule.c:2112
#1  0xffffffff80ba6de1 in mi_switch (flags=<optimized out>, newtd=0x0)
    at /usr/src/sys/kern/kern_synch.c:439
#2  0xffffffff80bf5c45 in sleepq_catch_signals (wchan=0xfffff8001033b980, 
    pri=-2048) at /usr/src/sys/kern/subr_sleepqueue.c:515
#3  0xffffffff80bf578f in sleepq_wait_sig (wchan=<unavailable>, 
    pri=<unavailable>) at /usr/src/sys/kern/subr_sleepqueue.c:706
#4  0xffffffff833e124b in linux_add_to_sleepqueue (wchan=0xfffff8001033b980, 
    task=0xfffff8001033b980, wmesg=<optimized out>, timeout=0, 
    state=<optimized out>)
    at /usr/src/sys/compat/linuxkpi/common/src/linux_schedule.c:62
#5  0xffffffff833e135b in linux_schedule_timeout (timeout=0)
    at /usr/src/sys/compat/linuxkpi/common/src/linux_schedule.c:315
#6  0xffffffff8327762f in g4x_update_wm (dev=<optimized out>)
    at /usr/src/sys/dev/drm2/i915/intel_pm.c:1400
#7  0xffffffff833dd918 in linux_kthread_fn (arg=<optimized out>)
    at /usr/src/sys/compat/linuxkpi/common/src/linux_kthread.c:156
#8  0xffffffff80b5bf33 in fork_exit (
    callout=0xffffffff833dd8d0 <linux_kthread_fn>, arg=0x0, 
    frame=0xfffffe006ea8bac0) at /usr/src/sys/kern/kern_fork.c:1057
#9  <signal handler called>
(kgdb) quit

eathbolt] - [~] - [2019-04-08 08:22:57]
└─[0] <> sudo kgdb /boot/kernel/kernel /var/crash/vmcore.last 
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Reading symbols from /boot/kernel/kernel...Reading symbols from
/usr/lib/debug//boot/kernel/kernel.debug...done.
done.

Unread portion of the kernel message buffer:

Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 01
fault virtual address   = 0xffffffcfd237154c
fault code              = supervisor read data, page not present
instruction pointer     = 0x20:0xffffffff80645a7a
stack pointer           = 0x28:0xfffffe0000580790
frame pointer           = 0x28:0xfffffe00005807c0
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         = 0 (iwn0 net80211 taskq)
trap number             = 12
WARNING !drm_modeset_is_locked(&crtc->mutex) failed at
/wrkdirs/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-4192575/drivers/gpu/drm/drm_atomic_helper.c:577
WARNING !drm_modeset_is_locked(&crtc->mutex) failed at
/wrkdirs/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-4192575/drivers/gpu/drm/drm_atomic_helper.c:577
WARNING !drm_modeset_is_locked(&dev->mode_config.connection_mutex) failed at
/wrkdirs/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-4192575/drivers/gpu/drm/drm_atomic_helper.c:622
WARNING !drm_modeset_is_locked(&plane->mutex) failed at
/wrkdirs/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-4192575/drivers/gpu/drm/drm_atomic_helper.c:821
WARNING !drm_modeset_is_locked(&plane->mutex) failed at
/wrkdirs/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-4192575/drivers/gpu/drm/drm_atomic_helper.c:821
WARNING !drm_modeset_is_locked(&plane->mutex) failed at
/wrkdirs/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-4192575/drivers/gpu/drm/drm_atomic_helper.c:821
WARNING !drm_modeset_is_locked(&plane->mutex) failed at
/wrkdirs/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-4192575/drivers/gpu/drm/drm_atomic_helper.c:821
WARNING !drm_modeset_is_locked(&plane->mutex) failed at
/wrkdirs/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-4192575/drivers/gpu/drm/drm_atomic_helper.c:821
WARNING !drm_modeset_is_locked(&plane->mutex) failed at
/wrkdirs/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-4192575/drivers/gpu/drm/drm_atomic_helper.c:821
<4>WARN_ON(!mutex_is_locked(&dev->struct_mutex))

<4>WARN_ON(!mutex_is_locked(&fbc->lock))WARN_ON(!mutex_is_locked(&fbc->lock))
panic: page fault
cpuid = 1
time = 1554745763
KDB: stack backtrace:
#0 0xffffffff80be7977 at kdb_backtrace+0x67
#1 0xffffffff80b9b563 at vpanic+0x1a3
#2 0xffffffff80b9b3b3 at panic+0x43
#3 0xffffffff8107496f at trap_fatal+0x35f
#4 0xffffffff810749c9 at trap_pfault+0x49
#5 0xffffffff81073fee at trap+0x29e
#6 0xffffffff8104f1d5 at calltrap+0x8
#7 0xffffffff80cdc774 at ieee80211_ht_node_cleanup+0x94
#8 0xffffffff80cf0db2 at node_cleanup+0x162
#9 0xffffffff80cf3253 at ieee80211_sta_leave+0x13
#10 0xffffffff80d05275 at sta_newstate+0xe5
#11 0xffffffff8064dcd3 at iwn_newstate+0x733
#12 0xffffffff80cfd4b9 at ieee80211_newstate_cb+0x199
#13 0xffffffff80bf9cb4 at taskqueue_run_locked+0x154
#14 0xffffffff80bfae18 at taskqueue_thread_loop+0x98
#15 0xffffffff80b5bf33 at fork_exit+0x83
#16 0xffffffff810501be at fork_trampoline+0xe
Uptime: 2d3h13m48s
Dumping 2904 out of 12015 MB:..1%..11%..21%..31%..41%..51%..61%..71%..81%..91%

__curthread () at ./machine/pcpu.h:230
230     ./machine/pcpu.h: No such file or directory.

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