https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=241718
Bug ID: 241718
Summary: rack_tcp: page fault/kernel panic in rack_output when
installing Vivaldi browser via wine
Product: Base System
Version: 12.1-RELEASE
Hardware: amd64
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: b...@freebsd.org
Reporter: ku...@gentoo.org
Running 12.1-RC2 on an Intel NUC8i5BEH with a custom kernel config, and using
the TCP RACK stack (from Netflix), I was attempting to install the Vivaldi web
browser (Chrome clone) as a standard user via i386-wine-devel in an
Enlightenment instance. At some point in Vivaldi's install, it must be making
a callout back home (telemetry/stats logging??), and when it does this, there
is a page fault, the kernel panics, and the system immediately reboots. This
issue is also reproducible using 64-bit wine and Vivaldi's 64-bit installer.
Partial log is below, manually transcribed from an image I took of the screen.
I didn't get all of the "WARNING" lines due to not having much time to get a
picture. I set dumpon to compress the dump, and this is what bought me a few
extra seconds. However, savecore reports on reboot that no dump was saved (I
think).
And although the drm-kmod drivers below do not appear to be a factor, I want to
note that I am using rebuilt drm-fbsd12.0-kmod from ports in package format, in
an attempt to get a working X11 up on this NUC device. In case there is any
curiosity about the "WARNING" lines.
Log:
Fatal trap 12: page fault while in kernel mode
cpuid = 1; apic id = 02
Fault virtual address = 0x18
fault code = supervisor read data, page not present
instruction pointer = 0x20:0xffffffff808dd95d
stack pointer = 0x0:0xfffffe008dced500
frame pointer = 0x0:0xfffffe008dced530
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 = 52969
trap number = 12
WARNING !drm_modeset_is_locked(&crtc->mutex) failed at
/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-9e308e6/drivers/gpu/drm/drm_atomic
<truncated>
WARNING !drm_modeset_is_locked(&crtc->mutex) failed at
/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-9e308e6/drivers/gpu/drm/drm_atomic
<truncated>
WARNING !drm_modeset_is_locked(&crtc->mutex) failed at
/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-9e308e6/drivers/gpu/drm/drm_atomic
<truncated>
WARNING !drm_modeset_is_locked(&dev->mode_config.connection_mutex) failed at
/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-9e308e6/driver <truncated>
WARNING !drm_modeset_is_locked(&plane->mutex) failed at
/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-9e308e6/drivers/gpu/drm/drm_atomic_h
<truncated>
WARNING !drm_modeset_is_locked(&plane->mutex) failed at
/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-9e308e6/drivers/gpu/drm/drm_atomic_h
<truncated>
WARNING !drm_modeset_is_locked(&plane->mutex) failed at
/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-9e308e6/drivers/gpu/drm/drm_atomic_h
<truncated>
WARNING !drm_modeset_is_locked(&plane->mutex) failed at
/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-9e308e6/drivers/gpu/drm/drm_atomic_h
<truncated>
WARNING !drm_modeset_is_locked(&plane->mutex) failed at
/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-9e308e6/drivers/gpu/drm/drm_atomic_h
<truncated>
WARNING !drm_modeset_is_locked(&plane->mutex) failed at
/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-9e308e6/drivers/gpu/drm/drm_atomic_h
<truncated>
WARNING !drm_modeset_is_locked(&plane->mutex) failed at
/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-9e308e6/drivers/gpu/drm/drm_atomic_h
<truncated>
WARNING !drm_modeset_is_locked(&plane->mutex) failed at
/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-9e308e6/drivers/gpu/drm/drm_atomic_h
<truncated>
WARNING !drm_modeset_is_locked(&plane->mutex) failed at
/usr/ports/graphics/drm-fbsd12.0-kmod/work/kms-drm-9e308e6/drivers/gpu/drm/drm_atomic_h
<truncated>
panic: page fault
cpuid = 1
time = 1572918827
KDB: stack backtrace:
#0 0xffffffff8089de97 at kdb_backtrace+0x67
#1 0xffffffff80850c9d at vpanic+0x19d
#2 0xffffffff80850af3 at panic+0x43
#3 0xffffffff80ba7c2c at trap_fatal+0x39c
#4 0xffffffff80ba7c78 at trap_pfault+0x48
#5 0xffffffff80ba7277 at trap+0x207
#6 0xffffffff80b8279c at calltrap+0x8
#7 0xffffffff81c76066 at rack_output+0x2e86
#8 0xffffffff80a41e31 at tcp_usr_shutdown+0xa1
#9 0xffffffff808eb5b0 at soshutdown+0xc0
#10 0xffffffff808f0e85 at kern_shutdown+0x65
#11 0xffffffff80c0852a at ia32_syscall+0x2aa
#12 0xffffffff80b8388f at int0x80_syscall_common+0x9c
Uptime: 4m52s
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