Re: kern/43247 (KASSERT while copying 32GB file from NFS to TMPFS)

[David Holland <dholland-bugs%netbsd.org@localhost>]

The following reply was made to PR kern/43247; it has been noted by GNATS.

From: David Holland <dholland-bugs%netbsd.org@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: kern/43247 (KASSERT while copying 32GB file from NFS to TMPFS)
Date: Sat, 21 Dec 2013 18:23:56 +0000

 (not sent to gnats)
 
    ------
 
 From: Nicolas Joly <njoly%pasteur.fr@localhost>
 To: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, 
netbsd-bugs%netbsd.org@localhost,
        njoly%pasteur.fr@localhost
 Subject: Re: kern/43247 (KASSERT while copying 32GB file from NFS to TMPFS)
 Date: Wed, 18 Dec 2013 17:30:45 +0100
 
 On Sat, Dec 07, 2013 at 02:50:01PM +0000, Nicolas Joly wrote:
 > The following reply was made to PR kern/43247; it has been noted by GNATS.
 > 
 > From: Nicolas Joly <njoly%pasteur.fr@localhost>
 > To: gnats-bugs%NetBSD.org@localhost
 > Cc: 
 > Subject: Re: kern/43247 (KASSERT while copying 32GB file from NFS to TMPFS)
 > Date: Sat, 7 Dec 2013 15:47:20 +0100
 > 
 >  On Fri, Dec 06, 2013 at 02:23:38PM +0000, Mindaugas Rasiukevicius wrote:
 >  > Synopsis: KASSERT while copying 32GB file from NFS to TMPFS
 >  > 
 >  > State-Changed-From-To: open->feedback
 >  > State-Changed-By: rmind%NetBSD.org@localhost
 >  > State-Changed-When: Fri, 06 Dec 2013 14:23:38 +0000
 >  > State-Changed-Why:
 >  > This seems like a problem in UVM side to me.  Can you easily reproduce it?
 >  
 >  I don't have this machine anymore ... But we, at work, just shutdown a
 >  similar one; i'll try to pick it, install -current and redo the tests.
 >  This may take a few days.
 
 Finally got some spare time today to setup the machine, and run the
 testcase. I had no problem with 32GB file ... but as the new machine
 has twice memory than the previous one (128GB was 64GB), i tried with
 a 64GB file, and it failed the very same way :
 
 panic: kernel diagnostic assertion 
"uvm_pagelookup(&aobj->u_obj,(UAO_SWHASH_ELT_PAGEIDX_BASE(elt) + j) << 
PAGE_SHIFT) == NULL" failed: file 
"/local/src/NetBSD/src/sys/uvm/uvm_aobj.c",line 1407
 cpu6: Begin traceback...
 vpanic() at netbsd:vpanic+0x136
 kern_assert() at netbsd:kern_assert+0x48
 uao_dropswap_range() at netbsd:uao_dropswap_range+0x2bb
 tmpfs_reg_resize() at netbsd:tmpfs_reg_resize+0xfe
 tmpfs_chsize() at netbsd:tmpfs_chsize+0xa5
 tmpfs_setattr() at netbsd:tmpfs_setattr+0x149
 VOP_SETATTR() at netbsd:VOP_SETATTR+0x34
 vn_open() at netbsd:vn_open+0x190
 do_open() at netbsd:do_open+0x102
 do_sys_openat() at netbsd:do_sys_openat+0x68
 sys_open() at netbsd:sys_open+0x24
 syscall() at netbsd:syscall+0x9a
 --- syscall (number 5) ---
 7f7ff703b07a:
 cpu6: End traceback...
 
 -- 
 Nicolas Joly
 
 Biology IT Center
 Institut Pasteur, Paris.