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Fri, 20 Feb 2026 14:20:36 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 293301] Kernel panic on tty switch Date: Fri, 20 Feb 2026 14:20:36 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 15.0-STABLE X-Bugzilla-Keywords: crash X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: emaste@freebsd.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D293301 Ed Maste changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |emaste@freebsd.org --- Comment #1 from Ed Maste --- From msgbuf.txt: panic: sleepq_add: td 0xfffff80002622000 to sleep on wchan 0xfffff80007d90e= 18 with sleeping prohibited cpuid =3D 0 time =3D 1771533266 KDB: stack backtrace: db_trace_self_wrapper() at 0xffffffff803d11fb =3D db_trace_self_wrapper+0x2b/frame 0xfffffe00d1d48ad0 vpanic() at 0xffffffff80620fb6 =3D vpanic+0x136/frame 0xfffffe00d1d48c00 panic() at 0xffffffff80620e73 =3D panic+0x43/frame 0xfffffe00d1d48c60 sleepq_add() at 0xffffffff80681238 =3D sleepq_add+0x338/frame 0xfffffe00d1d= 48cb0 _sleep() at 0xffffffff8062c5ae =3D _sleep+0x19e/frame 0xfffffe00d1d48d20 taskqueue_drain() at 0xffffffff80688199 =3D taskqueue_drain+0xe9/frame 0xfffffe00d1d48d60 vt_window_switch() at 0xffffffff805040d4 =3D vt_window_switch+0x134/frame 0xfffffe00d1d48da0 vt_proc_window_switch() at 0xffffffff8050487b =3D vt_proc_window_switch+0x11b/frame 0xfffffe00d1d48dd0 vt_kbdevent() at 0xffffffff80507dc9 =3D vt_kbdevent+0x329/frame 0xfffffe00d1d48e30 atkbd_intr() at 0xffffffff808ed32f =3D atkbd_intr+0xef/frame 0xfffffe00d1d4= 8e60 ithread_loop() at 0xffffffff805e1816 =3D ithread_loop+0x256/frame 0xfffffe00d1d48ef0 fork_exit() at 0xffffffff805ddf52 =3D fork_exit+0x82/frame 0xfffffe00d1d48f= 30 fork_trampoline() at 0xffffffff80935f5e =3D fork_trampoline+0xe/frame 0xfffffe00d1d48f30 --=20 You are receiving this mail because: You are the assignee for the bug.=