Date: Wed, 29 Sep 2010 17:42:20 +0000 From: Alexander Best <arundel@freebsd.org> To: Dimitry Andric <dim@FreeBSD.org> Cc: Jeff Roberson <jeff@FreeBSD.org>, FreeBSD-Current <freebsd-current@freebsd.org>, Kirk McKusick <mckusick@FreeBSD.org> Subject: Re: Soft update panic while running perl 5.12 tests Message-ID: <20100929174220.GA64424@freebsd.org> In-Reply-To: <4CA34E16.3030003@FreeBSD.org> References: <4CA34E16.3030003@FreeBSD.org>
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On Wed Sep 29 10, Dimitry Andric wrote: > Hi, > > I just encountered the following soft update panic while running perl > 5.12's tests: > > panic: indir_trunc: Index out of range -148 parent -2061 lbn -305164 > cpuid = 3 > KDB: enter: panic > [ thread pid 19 tid 100047 ] > Stopped at kdb_enter+0x3a: movl $0,kdb_why > db> bt > Tracing pid 19 tid 100047 td 0xc72e9b40 > kdb_enter(c0cd6a90,c0cd6a90,c0cfe8ab,e6be2b58,3,...) at kdb_enter+0x3a > panic(c0cfe8ab,ffffff6c,fffff7f3,ffffffff,fffb57f4,...) at panic+0x136 > indir_trunc(fffff7f3,ffffffff,c85507c0,c834d200,c733de00,...) at > indir_trunc+0x4be > handle_workitem_indirblk(4,c0cd520e,df,c834d200,c834d200,...) at > handle_workitem_indirblk+0x64 > handle_workitem_freeblocks(0,e6be2c74,2,5dc,1e0,...) at > handle_workitem_freeblocks+0x95 > process_worklist_item(c0fb2f98,0,c0cfdf8d,54a,c72e9b40,...) at > process_worklist_item+0x21c > softdep_process_worklist(c732aca8,0,c0cfdf8d,4cd,64,...) at > softdep_process_worklist+0x8c > softdep_flush(0,e6be2d28,c0cd1c8a,349,c72ed550,...) at softdep_flush+0x2a0 > fork_exit(c0afb670,0,e6be2d28) at fork_exit+0xb8 > fork_trampoline() at fork_trampoline+0x8 > --- trap 0, eip = 0, esp = 0xe6be2d60, ebp = 0 --- i encountered a similar panic while updating /usr/src over subversion. the amount of data coming in was quite a lot, since i'm tracking HEAD, but haven't updated /usr/src for almost 2 months. i decided to disable SUJ, because in addition to the panic i was experiencing random reboots in connection with chromium (+10 tabs open). i've been running plain UFS2+SU for almost 3 day now and haven't had a single panic or spontanious reboot. unfortunately i wasn't able to capture any information from the panic i mentioned beforehand, but my guess is that it was something similar that dimitry experienced. cheers. alex > > It is consistently reproducible. This is on a -current system, at > r213139, on i386. Settings for the affected filesystem: > > tunefs: POSIX.1e ACLs: (-a) disabled > tunefs: NFSv4 ACLs: (-N) disabled > tunefs: MAC multilabel: (-l) disabled > tunefs: soft updates: (-n) enabled > tunefs: soft update journaling: (-j) enabled > tunefs: gjournal: (-J) disabled > tunefs: maximum blocks per file in a cylinder group: (-e) 2048 > tunefs: average file size: (-f) 16384 > tunefs: average number of files in a directory: (-s) 64 > tunefs: minimum percentage of free space: (-m) 8% > tunefs: optimization preference: (-o) time > tunefs: volume label: (-L) dimtest1 > > The panic is apparently caused by perl's "op/lfs.t" test, which tests > perlio with big files. You can test it by building the perl 5.12 port, > and then running: > > cd /usr/ports/lang/perl5.12/work/perl-5.12.2/t > ../miniperl op/lfs.t > > Alternatively, just run "make test" in /usr/ports/lang/perl5.12. -- a13x
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