From nobody Sat Jun 04 21:21:11 2022 X-Original-To: freebsd-current@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 A6DB01BDD3EC for ; Sat, 4 Jun 2022 21:21:24 +0000 (UTC) (envelope-from imb@protected-networks.net) Received: from mail.protected-networks.net (mail.protected-networks.net [202.12.127.228]) (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 (2048 bits) client-digest SHA256) (Client CN "mail.protected-networks.net", Issuer "R3" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4LFt3R0r6gz4gbX; Sat, 4 Jun 2022 21:21:22 +0000 (UTC) (envelope-from imb@protected-networks.net) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d= protected-networks.net; h=content-transfer-encoding:content-type :content-type:subject:subject:from:from:content-language :user-agent:mime-version:date:date:message-id; s=201508; t= 1654377671; bh=F2BGXZLjVrdW6IYkekzdMEPsYiWSMPz1qw2z9nI7vgs=; b=f L3WT6r/Fm5glibYVzDLhHBWhltoKzY0rwEOe1IMiZAXHMYhWPdo1f6BRpvcepmon aFsOsKUU0wxHb9btqWjBfMO1axlsA4Ey+zWiUIB2SVroWKpfqsb7x9Sfz7pJJ4fy Ogl5ZTtVsbzfkaxw+8W2hbUSsb5RxUYMJpuZKtFjuk= Received: from [IPV6:2001:470:8d59:2:f21f:afff:fe66:957e] (toshi.auburn.protected-networks.net [IPv6:2001:470:8d59:2:f21f:afff:fe66:957e]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (Client did not present a certificate) (Authenticated sender: imb@mail.protected-networks.net) by mail.protected-networks.net (Postfix) with ESMTPSA id B30C1640E9; Sat, 4 Jun 2022 17:21:11 -0400 (EDT) Message-ID: <4cff718d-6f0f-bde8-2077-c83f4adc84df@protected-networks.net> Date: Sat, 4 Jun 2022 17:21:11 -0400 List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@freebsd.org MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:91.0) Gecko/20100101 Thunderbird/91.10.0 Content-Language: en-NZ To: freebsd-current Cc: manu@freebsd.org From: Michael Butler Subject: commit 99902b1 causes kernel panics Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4LFt3R0r6gz4gbX X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=protected-networks.net header.s=201508 header.b="f L3WT6r"; dmarc=pass (policy=reject) header.from=protected-networks.net; spf=pass (mx1.freebsd.org: domain of imb@protected-networks.net designates 202.12.127.228 as permitted sender) smtp.mailfrom=imb@protected-networks.net X-Spamd-Result: default: False [-4.00 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[protected-networks.net:s=201508]; MID_RHS_MATCH_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_SPF_ALLOW(-0.20)[+mx]; MIME_GOOD(-0.10)[text/plain]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; DKIM_TRACE(0.00)[protected-networks.net:+]; RCPT_COUNT_TWO(0.00)[2]; DMARC_POLICY_ALLOW(-0.50)[protected-networks.net,reject]; NEURAL_HAM_SHORT(-1.00)[-0.999]; MLMMJ_DEST(0.00)[freebsd-current]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:5716, ipnet:202.12.127.0/24, country:US]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[] X-ThisMailContainsUnwantedMimeParts: N On a Dell E6430 laptop with an i5-3340M CPU on-board but no additional video adapter, this commit causes a panic when i915kms is loaded :-( This adapter does not use any additional firmware. Reverting only this change allows me to run way past it - up to commit 00b0158d2ca, so far. All modules were recompiled to match. /var/crash/core.txt contains .. Fatal trap 12: page fault while in kernel mode cpuid = 3; apic id = 03 fault virtual address = 0x19 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff808abe54 stack pointer = 0x0:0xfffffe011920e9b0 frame pointer = 0x0:0xfffffe011920e9b0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 3 current process = 1274 (Xorg) trap number = 12 panic: page fault cpuid = 3 time = 1654274788 Uptime: 57s Dumping 749 out of 16251 MB:..3%..11%..22%..33%..41%..52%..62%..71%..82%..92% __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:55 55 __asm("movq %%gs:%P1,%0" : "=r" (td) : "n" (offsetof(struct pcpu, (kgdb) #0 __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:55 #1 dump_savectx () at /usr/src/sys/kern/kern_shutdown.c:401 #2 0xffffffff808b0e88 in dumpsys (di=0x0) at /usr/src/sys/x86/include/dump.h:87 #3 doadump (textdump=) at /usr/src/sys/kern/kern_shutdown.c:430 #4 kern_reboot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:537 #5 0xffffffff808b12fc in vpanic (fmt=, ap=ap@entry=0xfffffe011920e810) at /usr/src/sys/kern/kern_shutdown.c:975 #6 0xffffffff808b1183 in panic (fmt=) at /usr/src/sys/kern/kern_shutdown.c:899 #7 0xffffffff80c8712c in trap_fatal (frame=frame@entry=0xfffffe011920e8f0, eva=25) at /usr/src/sys/amd64/amd64/trap.c:942 #8 0xffffffff80c874d6 in trap_pfault (frame=0xfffffe011920e8f0, usermode=false, signo=, ucode=) at /usr/src/sys/amd64/include/cpufunc.h:411 #9 #10 _rw_wowned (c=0x19) at /usr/src/sys/kern/kern_rwlock.c:270 #11 0xffffffff80bf1a0a in vm_page_busy_acquire (m=0xfffffe0005affec8, allocflags=allocflags@entry=16) at /usr/src/sys/vm/vm_page.c:888 #12 0xffffffff8271b9a1 in lkpi_vmf_insert_pfn_prot_locked ( vma=0xfffff8015c3bc300, addr=, pfn=, prot=24) at /usr/src/sys/compat/linuxkpi/common/src/linux_page.c:297 #13 0xffffffff8252d390 in remap_io_mapping () from /boot/modules/i915kms.ko #14 0xffffffff826449c6 in vm_fault_gtt () from /boot/modules/i915kms.ko #15 0xffffffff82714e56 in linux_cdev_pager_populate ( vm_obj=0xfffff80154cd1b58, pidx=, fault_type=, max_prot=, first=0xfffffe011920ec20, last=0xfffffe011920ec38) at /usr/src/sys/compat/linuxkpi/common/src/linux_compat.c:692 #16 0xffffffff80bdb732 in vm_pager_populate (object=0x19, object@entry=0xfffffe011920ebb0, pidx=16, fault_type=1024, first=0xfffffe011920ec20, last=0xfffffe011920ec38, max_prot=) at /usr/src/sys/vm/vm_pager.h:182 #17 vm_fault_populate (fs=0xfffffe011920ecc0) at /usr/src/sys/vm/vm_fault.c:469 #18 vm_fault_allocate (fs=fs@entry=0xfffffe011920ecc0) at /usr/src/sys/vm/vm_fault.c:1162 #19 0xffffffff80bda47f in vm_fault_object (fs=0xfffffe011920ecc0, behindp=0xfffffe011920ecb4, aheadp=0xfffffe011920ecbc) at /usr/src/sys/vm/vm_fault.c:1414 #20 vm_fault (map=map@entry=0xfffffe012b5233f0, vaddr=vaddr@entry=35550920704, fault_type=fault_type@entry=2 '\002', fault_flags=fault_flags@entry=0, m_hold=m_hold@entry=0x0) at /usr/src/sys/vm/vm_fault.c:1549 #21 0xffffffff80bda07d in vm_fault_trap (map=0xfffffe012b5233f0, vaddr=, fault_type=, fault_flags=fault_flags@entry=0, signo=0xfffffe011920ef00, ucode=0xfffffe011920ef04) at /usr/src/sys/vm/vm_fault.c:667 #22 0xffffffff80c87345 in trap_pfault (frame=frame@entry=0xfffffe011920ef40, usermode=true, signo=0xfffffe011a70b318, signo@entry=0xfffffe011920ef00, ucode=0x3004, ucode@entry=0xfffffe011920ef04) at /usr/src/sys/amd64/amd64/trap.c:846 #23 0xffffffff80c86a75 in trap (frame=0xfffffe011920ef40) at /usr/src/sys/amd64/amd64/trap.c:385 #24 #25 0x0000000839618c9f in ?? () Backtrace stopped: Cannot access memory at address 0x820718370 (kgdb)