Date: Wed, 03 Sep 2014 00:56:09 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 193269] New: panic: kdb_switch: did not reenter debugger (from sysctl debug.kdb.enter=1 w/ i915kms) Message-ID: <bug-193269-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=193269 Bug ID: 193269 Summary: panic: kdb_switch: did not reenter debugger (from sysctl debug.kdb.enter=1 w/ i915kms) Product: Base System Version: 11.0-CURRENT Hardware: Any OS: Any Status: Needs Triage Severity: Affects Some People Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: emaste@freebsd.org X11 w/ i915, "sysctl debug.kdb.enter=1" from an xterm results in the following panic: #3 0xffffffff8090dc43 in panic (fmt=0x0) at /tank/emaste/src/freebsd/sys/kern/kern_shutdown.c:675 #4 0xffffffff80916ed4 in mi_switch (flags=<value optimized out>, newtd=<value optimized out>) at /tank/emaste/src/freebsd/sys/kern/kern_synch.c:424 #5 0xffffffff80953262 in sleepq_switch (wchan=<value optimized out>, pri=<value optimized out>) at /tank/emaste/src/freebsd/sys/kern/subr_sleepqueue.c:552 #6 0xffffffff809537c3 in sleepq_timedwait (wchan=0xffffffff815bdc82, pri=0) at /tank/emaste/src/freebsd/sys/kern/subr_sleepqueue.c:666 #7 0xffffffff8091670a in _sleep (ident=<value optimized out>, lock=<value optimized out>, priority=<value optimized out>, wmesg=<value optimized out>, sbt=<value optimized out>, pr=<value optimized out>) at /tank/emaste/src/freebsd/sys/kern/kern_synch.c:251 #8 0xffffffff80916be4 in pause_sbt (wmesg=0xffffffff8205e826 "915vbl", sbt=<value optimized out>, pr=0, flags=256) at /tank/emaste/src/freebsd/sys/kern/kern_synch.c:380 #9 0xffffffff8202d0d8 in intel_wait_for_vblank (dev=<value optimized out>, pipe=<value optimized out>) at /tank/emaste/src/freebsd/sys/modules/drm2/i915kms/../../../dev/drm2/i915/ intel_display.c:736 #10 0xffffffff82035459 in intel_pipe_set_base (crtc=0xfffff80012ef8800, x=0, y=0, old_fb=0xfffff800141bcd80) at /tank/emaste/src/freebsd/sys/modules/drm2/i915kms/../../../dev/drm2/i915/ intel_display.c:2340 #11 0xffffffff8207e960 in drm_crtc_helper_set_config (set=0xfffff8025603e208) at /tank/emaste/src/freebsd/sys/modules/drm2/drm2/../../../dev/drm2/drm_crtc _helper.c:746 #12 0xffffffff82085b7c in vt_kms_postswitch (arg=<value optimized out>) at /tank/emaste/src/freebsd/sys/modules/drm2/drm2/../../../dev/drm2/drm_fb_h elper.c:396 #13 0xffffffff807bae53 in vt_window_switch (vw=0xffffffff81467cb8) at /tank/emaste/src/freebsd/sys/dev/vt/vt_core.c:387 #14 0xffffffff807b9123 in vtterm_cngrab (tm=<value optimized out>) at /tank/emaste/src/freebsd/sys/dev/vt/vt_core.c:1238 #15 0xffffffff808c15c5 in cngrab () at /tank/emaste/src/freebsd/sys/kern/kern_cons.c:360 #16 0xffffffff809468d3 in kdb_trap (type=3, code=0, tf=<value optimized out>) at /tank/emaste/src/freebsd/sys/kern/subr_kdb.c:651 #17 0xffffffff80d23c02 in trap (frame=0xfffffe046320e6e0) at /tank/emaste/src/freebsd/sys/amd64/amd64/trap.c:542 #18 0xffffffff80d059e2 in calltrap () at /tank/emaste/src/freebsd/sys/amd64/amd64/exception.S:231 #19 0xffffffff80946b71 in kdb_sysctl_enter (oidp=<value optimized out>, arg1=<value optimized out>, arg2=-2180180285808, req=<value optimized out>) at cpufunc.h:63 #20 0xffffffff80919828 in sysctl_root_handler_locked (oid=0xffffffff8148bf80, arg1=0x0, arg2=0, req=0xfffffe046320e868) at /tank/emaste/src/freebsd/sys/kern/kern_sysctl.c:153 -- You are receiving this mail because: You are the assignee for the bug.
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