Date: Tue, 5 Mar 2013 11:00:01 GMT From: Andriy Gapon <avg@FreeBSD.org> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/176636: Periodical crashes with 9.1-R Message-ID: <201303051100.r25B01HY072915@freefall.freebsd.org>
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The following reply was made to PR kern/176636; it has been noted by GNATS.
From: Andriy Gapon <avg@FreeBSD.org>
To: bug-followup@FreeBSD.org, freebsd@gal.dk
Cc:
Subject: Re: kern/176636: Periodical crashes with 9.1-R
Date: Tue, 05 Mar 2013 12:55:22 +0200
Please try the following patch.
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c
@@ -543,7 +543,9 @@ mappedread_sf(vnode_t *vp, int nbytes, uio_t *uio)
vm_page_io_finish(pp);
vm_page_lock(pp);
if (error) {
- vm_page_free(pp);
+ if (pp->wire_count == 0 && pp->valid == 0 &&
+ pp->busy == 0 && !(pp->oflags & VPO_BUSY))
+ vm_page_free(pp);
} else {
pp->valid = VM_PAGE_BITS_ALL;
vm_page_activate(pp);
Additionally, if possible, I would like to see the following information from
"Crash 3":
- value of 'pg' in kern_sendfile frame
- output of 'info reg' command in zfs_freebsd_read frame
Thank you.
--
Andriy Gapon
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