Re: kern/50206: panic: mii_anar -- setting media for alc(4)

[Masanobu SAITOH <msaitoh%execsw.org@localhost>]

The following reply was made to PR kern/50206; it has been noted by GNATS.

From: Masanobu SAITOH <msaitoh%execsw.org@localhost>
To: gnats-bugs%NetBSD.org@localhost, kern-bug-people%netbsd.org@localhost,
 gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Cc: msaitoh%execsw.org@localhost
Subject: Re: kern/50206: panic: mii_anar -- setting media for alc(4)
Date: Fri, 4 Sep 2015 19:27:48 +0900

 On 2015/09/04 18:45, mrg%eterna.com.au@localhost wrote:
 >> Number:         50206
 >> Category:       kern
 >> Synopsis:       panic: mii_anar -- setting media for alc(4)
 >> Confidential:   no
 >> Severity:       serious
 >> Priority:       medium
 >> Responsible:    kern-bug-people
 >> State:          open
 >> Class:          sw-bug
 >> Submitter-Id:   net
 >> Arrival-Date:   Fri Sep 04 09:45:00 +0000 2015
 >> Originator:     matthew green
 >> Release:        NetBSD 7.99.21
 >> Organization:
 > people's front against (bozotic) www (softwar foundation)
 >> Environment:
 > System: NetBSD splode.eterna.com.au 6.1_STABLE NetBSD 6.1_STABLE (_splode_) #3: Sun Jul 26 21:53:08 EST 2015 mrg%splode.eterna.com.au@localhost:/var/obj/sparc64/usr/src/sys/arch/sparc64/compile/_splode_ sparc64
 > Architecture: sparc64
 > Machine: sparc64
 > 
 > 	actually my kernel is an amd64 laptop, the above is my send-pr host.
 > 
 >> Description:
 > 
 > 	i installed -current kernel on an asus laptop with a recent alc(4)
 > 	chipset:
 > 
 > 	alc0 at pci3 dev 0 function 0: Atheros AR8162 PCIe Fast Ethernet
 > 	alc0: interrupting at ioapic0 pin 19
 > 	atphy0 at alc0 phy 0: Atheros AR8035 10/100/1000 PHY, rev. 9
 > 
 > 	i tried to run "ifconfig alc0 media 100baseTX mediaopt full-duplex"
 > 	and i got the following panic:
 > 
 > 	System panicked: mii_anar
 > 	Backtrace from time of crash is available.
 > 	crash> bt
 > 	_KERNEL_OPT_NVGA_RASTERCONSOLE() at 0
 > 	?() at fffffe807864fdd8
 > 	panic() at panic
 > 	snprintf() at snprintf
 > 	mii_anar() at mii_anar+0x17
 > 	atphy_service() at atphy_service+0x134
 > 	mii_mediachg() at mii_mediachg+0x31
 > 	ifmedia_ioctl() at ifmedia_ioctl+0x96
 > 	alc_ioctl() at alc_ioctl+0x3a
 > 	doifioctl() at doifioctl+0x56e
 > 	soo_ioctl() at soo_ioctl+0x23e
 > 	sys_ioctl() at sys_ioctl+0x253
 > 	syscall() at syscall+0xd2
 > 	--- syscall (number 54) ---
 > 	7f7ff6ccf7ba:
 > 
 >> How-To-Repeat:
 >> Fix:
 > 
 
  Could you try with the following diff?
 I have no any atphy(4) device.
 
 Index: atphy.c
 ===================================================================
 RCS file: /cvsroot/src/sys/dev/mii/atphy.c,v
 retrieving revision 1.16
 diff -u -r1.16 atphy.c
 --- atphy.c	16 Jun 2014 12:36:41 -0000	1.16
 +++ atphy.c	4 Sep 2015 10:26:43 -0000
 @@ -228,7 +228,7 @@
  			return EINVAL;
  		}
  
 -		anar = mii_anar(ife->ifm_media);
 +		anar = mii_anar(IFM_SUBTYPE(ife->ifm_media));
  		if (((ife->ifm_media & IFM_GMASK) & IFM_FDX) != 0) {
  			bmcr |= BMCR_FDX;
  			/* Enable pause. */
 
 
 
 -- 
 -----------------------------------------------
                 SAITOH Masanobu (msaitoh%execsw.org@localhost
                                  msaitoh%netbsd.org@localhost)