Date: Sun, 12 Jul 2009 18:58:44 -0500 From: Alan Cox <alan.l.cox@gmail.com> To: current@freebsd.org, uqs@spoerlein.net Subject: Re: panic: vm_page_free_toq: freeing mapped page Message-ID: <ca3526250907121658ve3d18c0t95e046c0191aeddf@mail.gmail.com> In-Reply-To: <20090712203105.GJ2145@acme.spoerlein.net> References: <20090712203105.GJ2145@acme.spoerlein.net>
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On Sun, Jul 12, 2009 at 3:31 PM, Ulrich Sp=F6rlein <uqs@spoerlein.net> wrot= e: > Hi, > > 8.0 BETA1 @ r195622 will panic reliably when running the clang static > analyzer on a buildworld with something like the following panic: > > panic: vm_page_free_toq: freeing mapped page 0xffffff00c9715b30 > cpuid =3D 1 > KDB: stack backtrace: > db_trace_self_wrapper() at db_trace_self_wrapper+0x2a > panic() at panic+0x182 > vm_page_free_toq() at vm_page_free_toq+0x1f6 > vm_object_terminate() at vm_object_terminate+0xb7 > vm_object_deallocate() at vm_object_deallocate+0x17a > _vm_map_unlock() at _vm_map_unlock+0x70 > vm_map_remove() at vm_map_remove+0x6f > vmspace_free() at vmspace_free+0x56 > vmspace_exec() at vmspace_exec+0x56 > exec_new_vmspace() at exec_new_vmspace+0x133 > exec_elf32_imgact() at exec_elf32_imgact+0x2ee > kern_execve() at kern_execve+0x3b2 > execve() at execve+0x3d > syscall() at syscall+0x1af > Xfast_syscall() at Xfast_syscall+0xe1 > --- syscall (59, FreeBSD ELF64, execve), rip =3D 0x800c20d0c, rsp =3D > 0x7fffffffd6f8, rbp =3D 0x7fffffffdbf0 --- > KDB: enter: panic > exclusive sleep mutex vm page queue mutex (vm page queue mutex) r =3D 0 > (0xffffffff8095ea60) locked @ /data/freebsd-head/sys/vm/vm_object.c:688 > exclusive sleep mutex vm object (standard object) r =3D 0 > (0xffffff0046453798) locked @ /data/freebsd-head/sys/vm/vm_object.c:450 > exclusive sleep mutex vm page queue mutex (vm page queue mutex) r =3D 0 > (0xffffffff8095ea60) locked @ /data/freebsd-head/sys/vm/vm_object.c:688 > exclusive sleep mutex vm object (standard object) r =3D 0 > (0xffffff0046453798) locked @ /data/freebsd-head/sys/vm/vm_object.c:450 > exclusive sleep mutex pmap (pmap) r =3D 0 (0xffffff003c8b02b8) locked @ > /data/freebsd-head/sys/amd64/amd64/pmap.c:3955 > shared sx user map (user map) r =3D 0 (0xffffff003c8b0200) locked @ > /data/freebsd-head/sys/vm/vm_map.c:3522 > exclusive sx so_rcv_sx (so_rcv_sx) r =3D 0 (0xffffff0004698e40) locked @ > /data/freebsd-head/sys/kern/uipc_sockbuf.c:148 > > Can you please elaborate on the kernel configuration that you are using? Alan
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