Date: Mon, 26 Oct 2015 14:50:36 +0000 (UTC) From: =?UTF-8?Q?Roger_Pau_Monn=c3=a9?= <royger@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-vendor@freebsd.org Subject: svn commit: r290005 - head/sys/dev/xen/blkfront head/sys/x86/x86 svnadmin/tools/checkacl Message-ID: <201510261450.t9QEoaka099833@repo.freebsd.org>
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Author: royger Date: Mon Oct 26 14:50:35 2015 New Revision: 290005 URL: https://svnweb.freebsd.org/changeset/base/290005 Log: x86/dma_bounce: revert r289834 and r289836 The new load_ma implementation can cause dereferences when used with certain drivers, back it out until the reason is found: Fatal trap 12: page fault while in kernel mode cpuid = 11; apic id = 03 fault virtual address = 0x30 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff808a2d22 stack pointer = 0x28:0xfffffe07cc737710 frame pointer = 0x28:0xfffffe07cc737790 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 = 13 (g_down) trap number = 12 panic: page fault cpuid = 11 KDB: stack backtrace: #0 0xffffffff80641647 at kdb_backtrace+0x67 #1 0xffffffff80606762 at vpanic+0x182 #2 0xffffffff806067e3 at panic+0x43 #3 0xffffffff8084eef1 at trap_fatal+0x351 #4 0xffffffff8084f0e4 at trap_pfault+0x1e4 #5 0xffffffff8084e82f at trap+0x4bf #6 0xffffffff80830d57 at calltrap+0x8 #7 0xffffffff8063beab at _bus_dmamap_load_ccb+0x1fb #8 0xffffffff8063bc51 at bus_dmamap_load_ccb+0x91 #9 0xffffffff8042dcad at ata_dmaload+0x11d #10 0xffffffff8042df7e at ata_begin_transaction+0x7e #11 0xffffffff8042c18e at ataaction+0x9ce #12 0xffffffff802a220f at xpt_run_devq+0x5bf #13 0xffffffff802a17ad at xpt_action_default+0x94d #14 0xffffffff802c0024 at adastart+0x8b4 #15 0xffffffff802a2e93 at xpt_run_allocq+0x193 #16 0xffffffff802c0735 at adastrategy+0xf5 #17 0xffffffff80554206 at g_disk_start+0x426 Uptime: 2m29s Modified: Directory Properties: vendor/ (props changed) Changes in other areas also in this revision: Modified: head/sys/dev/xen/blkfront/blkfront.c head/sys/x86/x86/busdma_bounce.c Directory Properties: svnadmin/tools/checkacl/Makefile (props changed) svnadmin/tools/checkacl/checkacl.c (props changed)
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