NetBSD Problem Report #41441

From www@NetBSD.org  Sat May 16 11:37:07 2009
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Date: Sat, 16 May 2009 11:37:06 +0000 (UTC)
From: o.vd.linden@quicknet.nl
Reply-To: o.vd.linden@quicknet.nl
To: gnats-bugs@NetBSD.org
Subject: savecore doesn't use getbootfile(3) to set a default kernel name
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>Number:         41441
>Category:       bin
>Synopsis:       savecore doesn't use getbootfile(3) to set a default kernel name
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat May 16 11:40:00 +0000 2009
>Last-Modified:  Sun May 17 19:20:01 +0000 2009
>Originator:     Onno van der Linden
>Release:        5.99.11
>Organization:
>Environment:
NetBSD sheep 5.99.11 NetBSD 5.99.11 (GENERIC) #0: Wed May  6 15:59:23 MEST 2009  onno@sheep:/usr/src/sys/arch/i386/compile/GENERIC i386
>Description:
savecore does not set the default kernel name when the -N option isn't used.
The manual says about -N:  Use system as the kernel instead of the default
                                               (returned by getbootfile(3))


# savecore /var/chrash
May 16 11:54:23 sheep savecore: reboot after panic: panic: trap
May 16 11:54:23 sheep savecore: (null): Bad addres
>How-To-Repeat:
Somehow create a crashdump in the swap partition.
savecore from rc.d failed. savecore by hand fails in the same way
>Fix:
*** savecore.c.orig        Sat May 16 13:34:46 2009
--- savecore.c  Sat May 16 13:34:53 2009
***************
*** 228,233 ****
--- 228,236 ----
        if (!clear)
                dirname = argv[0];

+       if (kernel == NULL)
+               kernel = getbootfile();
+ 
        (void)time(&now);
        kmem_setup();

>Audit-Trail:
From: Onno van der Linden <o.vd.linden@quicknet.nl>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: bin/41441: savecore doesn't use getbootfile(3) to set a
	default kernel name
Date: Sat, 16 May 2009 21:20:12 +0200

 After applying the patch I got:

 May 16 12:20:00 sheep savecore: reboot after panic: panic: trap
 May 16 12:20:01 sheep savecore: /var/crash/bounds: No such file or directory
 May 16 12:20:01 sheep savecore: writing core to /var/crash/netbsd.0.core
 May 16 12:20:05 sheep savecore: writing kernel to /var/crash/netbsd.0
 May 16 12:20:08 sheep savecore: /dev/rwd0b: kvm_dump_inval: cannot invalidate dump - pwrite: Invalid argument

 A subsequent

 savecore -c

 didn't complain. Something with the kd_dump descriptor passed to
 kvm_dump_inval() in case of the save action is preventing to
 crash dump from being cleared.

 Onno

From: Hauke Fath <hauke@Espresso.Rhein-Neckar.DE>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: bin/41441: savecore doesn't use getbootfile(3) to set a
 default kernel name
Date: Sun, 17 May 2009 20:54:53 +0200

 See also kern/41310.

 	hauke

 --
 "It's never straight up and down"     (DEVO)

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