Date: Mon, 31 Oct 2011 19:33:01 +0300 From: Sergey Kandaurov <pluknet@freebsd.org> To: Alan Cox <alc@freebsd.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r226928 - head/sys/vm Message-ID: <CAE-mSOK3pc01j0m%2BxPKbakL6OJB3HszQ4Cx1tPu%2Bugro3wAp=Q@mail.gmail.com> In-Reply-To: <201110300506.p9U56E3l049042@svn.freebsd.org> References: <201110300506.p9U56E3l049042@svn.freebsd.org>
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On 30 October 2011 09:06, Alan Cox <alc@freebsd.org> wrote: > Author: alc > Date: Sun Oct 30 05:06:14 2011 > New Revision: 226928 > URL: http://svn.freebsd.org/changeset/base/226928 > > Log: > =A0Eliminate vm_phys_bootstrap_alloc(). =A0It was a failed attempt at > =A0eliminating duplicated code in the various pmap implementations. > > =A0Micro-optimize vm_phys_free_pages(). > > =A0Introduce vm_phys_free_contig(). =A0It is fast routine for freeing an > =A0arbitrary number of physically contiguous pages. =A0In particular, it > =A0doesn't require the number of pages to be a power of two. > > =A0Use "u_long" instead of "unsigned long". > > =A0Bruce Evans (bde@) has convinced me that the "boundary" parameters > =A0to kmem_alloc_contig(), vm_phys_alloc_contig(), and > =A0vm_reserv_reclaim_contig() should be of type "vm_paddr_t" and not > =A0"u_long". =A0Make this change. Hello. After updating to this revision I constantly get random mtrash_ctor() assertions. [most often during make installkernel, otherwise idle.] Below is one of them (previous memory consumers in panicstr differ). Memory modified after free 0xfffffe0002700800(120) val=3D0 @ 0xfffffe000270= 0800 panic: Most recently used by proc-args cpuid =3D 1 KDB: stack backtrace: db_trace_self_wrapper() at 0xffffffff802e009a =3D db_trace_self_wrapper+0x2= a kdb_backtrace() at 0xffffffff80486f17 =3D kdb_backtrace+0x37 panic() at 0xffffffff8044f87e =3D panic+0x2ee mtrash_ctor() at 0xffffffff8068c904 =3D mtrash_ctor+0x84 uma_zalloc_arg() at 0xffffffff8068c16c =3D uma_zalloc_arg+0x2dc malloc() at 0xffffffff8043abd6 =3D malloc+0xc6 pargs_alloc() at 0xffffffff804425d3 =3D pargs_alloc+0x23 kern_execve() at 0xffffffff8041cb47 =3D kern_execve+0x1277 sys_execve() at 0xffffffff8041ce6d =3D sys_execve+0x3d amd64_syscall() at 0xffffffff806c6319 =3D amd64_syscall+0x299 Xfast_syscall() at 0xffffffff806b16b7 =3D Xfast_syscall+0xf7 --- syscall (59, FreeBSD ELF64, sys_execve), rip =3D 0x800d4cbec, rsp =3D 0x7fffffffd1a8, rbp =3D 0x8014124a0 --- --=20 wbr, pluknet
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