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Re: port-amd64/49643: 7.99.4/amd64 xrestr()/fxsavel panic

The following reply was made to PR port-amd64/49643; it has been noted by GNATS.

From: Christoph Badura <>
Subject: Re: port-amd64/49643: 7.99.4/amd64 xrestr()/fxsavel panic
Date: Sat, 7 Feb 2015 18:07:05 +0100

 On Thu, Feb 05, 2015 at 01:15:00PM +0000, Martin Husemann wrote:
 >  Does reverting sys/dev/ic/vga.c to r1.112 help?
 I cannot test that quickly.
 >  What is the backtrace and what value do you use for hw.acpi.sleep.vbios ?
 This happens with hw.acpi.sleep.vbios being 0 or 2.  The T500s do not
 resume from S3 with hw.acpi.sleep.vbios == 1.
 The tail of msgbuf and and backtrace from crash(8), pid 1680.1 is Xorg:
 fatal protection fault in supervisor mode
 trap type 4 code 0 rip ffffffff8028967a cs 8 rflags 13046 cr2 7f7fffffff28 ileve
 l 8 rsp fffffe810f6adec8
 curlwp 0xfffffe823971a680 pid 1680.1 lowest kstack 0xfffffe810f6aa2c0
 dumping to dev 0,1 (offset=217031, size=2070023):
 crash> bt
 db_reboot_cmd() at db_reboot_cmd
 db_command() at db_command+0xf0
 db_command_loop() at db_command_loop+0xd0
 db_trap() at db_trap+0xe9
 kdb_trap() at kdb_trap+0xe5
 trap() at trap+0x1b3
 --- trap (number 4) ---
 xrstor() at xrstor+0xa

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