Date: Thu, 14 Feb 2008 00:04:33 +0100 From: Jakub Siroky <jakob@dev.citybikes.cz> To: Kris Kennaway <kris@FreeBSD.org> Cc: freebsd-fs@FreeBSD.org Subject: Re: infinite loop when copying to ext2fs / ext2_new_block() Message-ID: <20080214000433.6d8e1f34@dev.citybikes.cz> In-Reply-To: <47921AE2.1060004@FreeBSD.org> References: <20080118120140.2a8170a0@dev> <47921931.9050606@FreeBSD.org> <47921AE2.1060004@FreeBSD.org>
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This is the dump when I place a panic call inside the loop and then use kgdb: Panic String: ext2_new_block: bit already set for block 5346 panic() at panic+0x17a - added otherwise loop occurs, especially when the volume is almost full ext2_new_block() at ext2_new_block+0x892 ext2_alloc() at ext2_alloc+0x189 ext2_balloc() at ext2_balloc+0x1f3 ext2_write() at ext2_write+0x178 VOP_WRITE_APV() at VOP_WRITE_APV+0x131 vn_write() at vn_write+0x1ce dofilewrite() at dofilewrite+0x85 kern_writev() at kern_writev+0x4c write() at write+0x54 syscall() at syscall+0x1f6 Xfast_syscall() at Xfast_syscall+0xab --- syscall (4, FreeBSD ELF64, write), rip = 0x800713d3c, rsp = 0x7fffffffe948, rbp = 0x19df2 --- Regards, Jakub On Sat, 19 Jan 2008 16:44:34 +0100 Kris Kennaway <kris@FreeBSD.org> wrote: > Kris Kennaway wrote: > > Jakub Siroky wrote: > >> I have two large ext2fs partitions (368 and 313GB) to hold data > >> shared between several OSes. While there were no problems on > >> 6-STABLE branch I was quite disappointed after upgrade to > >> 7-STABLE. Whenever I copy/write to ext2fs partition the system > >> freezes totally without crashdump. So I set debugging settings to > >> kernel config (DEBUG,WITNESS,..) and in console I reproduced error > >> situation ending with full screen of unstoppable running text with > >> lot of memory addresses and a few recognisable words: 'new block > >> bit set for ext already' - again with no crashdump. Then I have > >> formatted 1GB partition with ext2fs and the problem on this small > >> partition appears only sometimes. > > > > OK, I am able to reproduce this. > > > > Kris > > > > Is anyone able to look at this? I could not spot a candidate change > that has not been merged to 6.x. > > Kris
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