NetBSD Problem Report #55186

From martin@duskware.de  Sun Apr 19 18:45:50 2020
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From: martin@NetBSD.org
Reply-To: martin@NetBSD.org
To: gnats-bugs@NetBSD.org
Subject: tests crash arm pmap
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>Number:         55186
>Category:       port-arm
>Synopsis:       tests crash arm pmap
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-arm-maintainer
>State:          closed
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Apr 19 18:50:00 +0000 2020
>Closed-Date:    Tue Apr 21 16:40:11 +0000 2020
>Last-Modified:  Tue Apr 21 16:40:11 +0000 2020
>Originator:     Martin Husemann
>Release:        NetBSD 9.99.56
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD unpluged.duskware.de 9.99.56 NetBSD 9.99.56 (UNPLUGED) #310: Sun Apr 19 09:06:43 CEST 2020 martin@seven-days-to-the-wolves.aprisoft.de:/work/src/sys/arch/evbarm/compile/UNPLUGED evbarm
Architecture: earm
Machine: evbarm
>Description:

Running tests crash the kernel:

[ 10730.9354023] panic: kernel diagnostic assertion "!cache_needs_cleaning" failed: file "../../../../arch/arm/arm32/pmap.c", line 2598
[ 10730.9354023] cpu0: Begin traceback...
[ 10730.9354023] 0xd4dd3cd4: netbsd:db_panic+0x14
[ 10730.9354023] 0xd4dd3cec: netbsd:vpanic+0x11c
[ 10730.9354023] 0xd4dd3d04: netbsd:kern_assert+0x40
[ 10730.9354023] 0xd4dd3d3c: netbsd:pmap_clean_page.isra.17+0x100
[ 10730.9354023] 0xd4dd3d74: netbsd:pmap_page_remove.isra.26+0x44
[ 10730.9354023] 0xd4dd3d9c: netbsd:uvm_loanbreak+0x98
[ 10730.9354023] 0xd4dd3edc: netbsd:uvm_fault_internal+0x1b4c
[ 10730.9354023] 0xd4dd3fac: netbsd:data_abort_handler+0x250
[ 10730.9354023] cpu0: End traceback...


>How-To-Repeat:

cd /usr/tests/lib/libc/sys && atf-run t_mmap

>Fix:
n/a

>Release-Note:

>Audit-Trail:
From: "Andrew Doran" <ad@netbsd.org>
To: gnats-bugs@gnats.NetBSD.org
Cc: 
Subject: PR/55186 CVS commit: src/sys/arch/arm/arm32
Date: Sun, 19 Apr 2020 21:24:36 +0000

 Module Name:	src
 Committed By:	ad
 Date:		Sun Apr 19 21:24:36 UTC 2020

 Modified Files:
 	src/sys/arch/arm/arm32: pmap.c

 Log Message:
 PR port-arm/55186: tests crash arm pmap

 pmap_clearbit(): take execbits into account in the fastpath.


 To generate a diff of this commit:
 cvs rdiff -u -r1.410 -r1.411 src/sys/arch/arm/arm32/pmap.c

 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.

From: "Nick Hudson" <skrll@netbsd.org>
To: gnats-bugs@gnats.NetBSD.org
Cc: 
Subject: PR/55186 CVS commit: src/sys/arch/arm/arm32
Date: Tue, 21 Apr 2020 06:45:16 +0000

 Module Name:	src
 Committed By:	skrll
 Date:		Tue Apr 21 06:45:16 UTC 2020

 Modified Files:
 	src/sys/arch/arm/arm32: pmap.c

 Log Message:
 There is no fast spoon^Wfast path in pmap_clearbit.

 PR port-arm/55186: tests crash arm pmap

 Tested by martin@


 To generate a diff of this commit:
 cvs rdiff -u -r1.411 -r1.412 src/sys/arch/arm/arm32/pmap.c

 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.

State-Changed-From-To: open->feedback
State-Changed-By: maya@NetBSD.org
State-Changed-When: Tue, 21 Apr 2020 16:38:19 +0000
State-Changed-Why:
Are there remaining issues?


State-Changed-From-To: feedback->closed
State-Changed-By: martin@NetBSD.org
State-Changed-When: Tue, 21 Apr 2020 16:40:11 +0000
State-Changed-Why:
confirmed fixed


>Unformatted:

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