From nobody Fri Dec 13 16:14:47 2024 X-Original-To: bugs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4Y8vYh3Qdlz5glrd for ; Fri, 13 Dec 2024 16:14:48 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R10" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4Y8vYg3sk4z3xhK for ; Fri, 13 Dec 2024 16:14:47 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1734106487; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=k5CYziASMMzYV5S2zzvoApQGxXWQEId1dfiOwuhNca0=; b=MzGlNpI5a22YEXbjoxaBgB4Q/YEkZ1QUV2qY2CdEixs1w7FFvE/F2dRJxKiiz2gMwD6Jdr hNzHEHH3Y+eD7USqNN25y8nzPD5CGxb1T4JL3VAiNanga/50W+Eh5KdSJ1IFLrKzIPd93Y aZYFKjAyadXqczFx8aZXz4eMj+e+wHwSTvg+/VzOgFnqWIHb7zLbhttE1NhiO/JB8nxKpC Tm1o9jP4Wbzece8A1+eLKy/tmigivgeMJWaG0rr4Y95b9WcdUhj+J0L7s0ltktjz8aw5/m k5aqa0ppZvTjKtskSn/Z+29FSDRhVVvJ0BO1kX3oDSlndEiW1IDVuXuYi6JlHw== ARC-Authentication-Results: i=1; mx1.freebsd.org; none ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1734106487; a=rsa-sha256; cv=none; b=D62luExejm7o8/4HnA9Fj8BReb9xngqgE62YYf6Qwu50CW3VL5LY2cL8qsqeKAye5cNdxq Aa+XJSfENz/119ZIckigw/uq+dTHuC5egrVnmWcx+2g11Qnyew+IN3bkM40Rkbh+8enVKe T9ftza8O7IYIvIP0P8qzZ24M1ovJVhURmyNbjZimu7k4AUwRSr8UBwv4Sq/97/beQ4FMMn 3MnDCJxnIuVqts7UlaZ+40/sgjGTEYs/9rC5jMnIrxQ5sRQFrqVUXxrJdSLrezLDoId6nx vOsEK/nVae5kGcAQDBpiJxBtOTtwQFfnyWnBHRNOq8JHzi2DKWv3fyK6JgCWoA== Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 4Y8vYg3Cnszl9S for ; Fri, 13 Dec 2024 16:14:47 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 4BDGElwx085441 for ; Fri, 13 Dec 2024 16:14:47 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 4BDGEl8j085440 for bugs@FreeBSD.org; Fri, 13 Dec 2024 16:14:47 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 283312] Kernel crash in sched_switch Date: Fri, 13 Dec 2024 16:14:47 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 14.2-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: alexey@ocaml.nl X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable 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=3D283312 Bug ID: 283312 Summary: Kernel crash in sched_switch Product: Base System Version: 14.2-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: alexey@ocaml.nl I have no idea how to reproduce this, but since upgrading to 14.2-RELEASE, I have been getting crashes occasionally. The same computer was running before 13.2-RELEASE, 14.0-RELEASE, 14.1-RELEASE, and 14-STABLE, and I saw no such crashes. What I see in dmesg output is: Fatal trap 12: page fault while in user mode cpuid =3D 6; apic id =3D 06 fault virtual address =3D 0x542350 fault code =3D user read instruction, reserved bits in PTE instruction pointer =3D 0x43:0x542350 stack pointer =3D 0x3b:0x8219fdae8 frame pointer =3D 0x3b:0x8219fdb90 code segment =3D base 0x0, limit 0xfffff, type 0x1b =3D DPL 3, pres 1, long 1, def32 0, gran 1 processor eflags =3D interrupt enabled, resume, IOPL =3D 0 current process =3D 96419 (pkg-static) rdi: 00000008219fe5b0 rsi: 00000008219fdc78 rdx: 00000008219fdc90 rcx: 0000000000000041 r8: 0000000000000081 r9: 0000000000000000 rax: 00002fae2698c588 rbx: 00000008219fdbe8 rbp: 00000008219fdb90 r10: 00000008219fdc78 r11: 000000000000004e r12: 0000000000000103 r13: 00000008219fdd18 r14: 00000008219fdc78 r15: 00000008219fdc90 trap number =3D 12 panic: page fault cpuid =3D 6 time =3D 1734089856 KDB: stack backtrace: #0 0xffffffff80b8b89d at kdb_backtrace+0x5d #1 0xffffffff80b3dc01 at vpanic+0x131 #2 0xffffffff80b3dac3 at panic+0x43 #3 0xffffffff81025a0b at trap_fatal+0x40b #4 0xffffffff81025a56 at trap_pfault+0x46 #5 0xffffffff810251fb at trap+0x4ab #6 0xffffffff80ffc398 at calltrap+0x8 Uptime: 9d17h46m22s Here is what kgdb says: sched_switch (td=3Dtd@entry=3D0xffffffff81b6eb20 , flags=3Dflags@entry=3D259) at /usr/src/sys/kern/sched_ule.c:2290 2290 cpuid =3D td->td_oncpu =3D PCPU_GET(cpuid); (kgdb) backtrace #0 sched_switch (td=3Dtd@entry=3D0xffffffff81b6eb20 , flags=3Dflags@entry=3D259) at /usr/src/sys/kern/sched_ule.c:2290 #1 0xffffffff80b4adeb in mi_switch (flags=3Dflags@entry=3D259) at /usr/src/sys/kern/kern_synch.c:548 #2 0xffffffff80b9b320 in sleepq_switch ( wchan=3Dwchan@entry=3D0xffffffff81b6e5b8 , pri=3Dpri@entry=3D52) at /usr/src/sys/kern/subr_sleepqueue.c:607 #3 0xffffffff80b9b91f in sleepq_timedwait ( wchan=3Dwchan@entry=3D0xffffffff81b6e5b8 , pri=3D52) at /usr/src/sys/kern/subr_sleepqueue.c:689 #4 0xffffffff80b4a548 in _sleep (ident=3D0xffffffff81b6e5b8 , lock=3Dlock@entry=3D0x0, priority=3Dpriority@entry=3D52, wmesg=3D, sbt=3D42949670000, pr=3Dpr@entry=3D0, flags=3D= 256) at /usr/src/sys/kern/kern_synch.c:219 #5 0xffffffff80ee3779 in swapper () at /usr/src/sys/vm/vm_swapout.c:753 #6 0xffffffff8037d023 in btext () at /usr/src/sys/amd64/amd64/locore.S:88 Let me know if I can help debug it somehow. P.S. Intel Core i3-12100F; 64 Gb RAM. --=20 You are receiving this mail because: You are the assignee for the bug.=