Date: Tue, 17 Jan 2006 12:50:06 -0800 From: Jason Evans <jasone@freebsd.org> To: Steve Kargl <sgk@troutmask.apl.washington.edu> Cc: freebsd-current@freebsd.org Subject: Re: malloc fallout and linprocfs Message-ID: <876011DA-7506-4DDF-8BCA-403EE1F10552@freebsd.org> In-Reply-To: <20060117204155.GA3472@troutmask.apl.washington.edu> References: <20060117204155.GA3472@troutmask.apl.washington.edu>
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On Jan 17, 2006, at 12:41 PM, Steve Kargl wrote: > If I fire up a linux version of OpenOffice on amd64, I see > several messages of the following form on the console. > > KDB: stack backtrace: > witness_warn() at witness_warn+0x262 > uma_zalloc_arg() at uma_zalloc_arg+0x217 > malloc() at malloc+0xa3 > vn_fullpath() at vn_fullpath+0x56 > linprocfs_doprocmaps() at linprocfs_doprocmaps+0x31e > pfs_read() at pfs_read+0x260 > VOP_READ_APV() at VOP_READ_APV+0x74 > vn_read() at vn_read+0x14f > dofileread() at dofileread+0x94 > kern_readv() at kern_readv+0x60 > read() at read+0x4a > ia32_syscall() at ia32_syscall+0x178 > Xint0x80_syscall() at Xint0x80_syscall+0x5d > malloc(M_WAITOK) of "1024", forcing M_NOWAIT with the following non- > sleepable locks held: > exclusive sleep mutex vm object (standard object) r = 0 > (0xffffff02b7846640) locked @ /usr/src/sys/compat/linprocfs/ > linprocfs.c:874 > > This is with > troutmask:kargl[202] ident /usr/src/lib/libc/stdlib/malloc.c > /usr/src/lib/libc/stdlib/malloc.c: > $FreeBSD: src/lib/libc/stdlib/malloc.c,v 1.92 2006/01/12 18:09:25 > jasone Exp $ I don't think that libc's malloc is a factor here; the stacktrace above is all in the kernel, isn't it? Jason
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