Date: Sun, 29 Dec 2019 15:57:58 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: =?UTF-8?B?W0J1ZyAyNDI5NjFdIENyYXNoZXMgKGVsZjY0X2NvcmVkdW1wIA==?= =?UTF-8?B?4oCmIHZtX29iamVjdF9zZXRfd3JpdGVhYmxlX2RpcnR5KSBhZnRlciB0aGUg?= =?UTF-8?B?cmVjZW50IHZtIHBhdGNoIHNlcmllcw==?= Message-ID: <bug-242961-227@https.bugs.freebsd.org/bugzilla/>
next in thread | raw e-mail | index | archive | help
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D242961 Bug ID: 242961 Summary: Crashes (elf64_coredump =E2=80=A6 vm_object_set_writeable_dirty) after the recent vm patch series Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: greg@unrelenting.technology Either the series with https://reviews.freebsd.org/D22885 or 'Correctly implement PMAP_ENTER_NOREPLACE=E2=80=A6' is causing my system to crash very= soon after entering the desktop (wayfire). (I reverted both 'PMAP_=E2=80=A6' and every= thing from 'Remove some unused functions' to 'Don't update per-page activation counts= =E2=80=A6' and that fixed the problem.) A dump I got doesn't seem desktop/gpu specific in any way, but seems to poi= nt at the coredump functionality: Fatal trap 12: page fault while in kernel mode cpuid =3D 2; apic id =3D 02 fault virtual address =3D 0x89 fault code =3D supervisor read data, page not present instruction pointer =3D 0x20:0xffffffff806e8d84 stack pointer =3D 0x0:0xfffffe00cdc812c0 frame pointer =3D 0x0:0xfffffe00cdc812c0 code segment =3D base 0x0, limit 0xfffff, type 0x1b =3D DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags =3D interrupt enabled, resume, IOPL =3D 0 current process =3D 63690 (cron) trap number =3D 12 panic: page fault cpuid =3D 2 time =3D 1577630640 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00cdc80= f30 vpanic() at vpanic+0x17e/frame 0xfffffe00cdc80f90 panic() at panic+0x43/frame 0xfffffe00cdc80ff0 trap_fatal() at trap_fatal+0x386/frame 0xfffffe00cdc81050 trap_pfault() at trap_pfault+0x4f/frame 0xfffffe00cdc810c0 trap() at trap+0x288/frame 0xfffffe00cdc811f0 calltrap() at calltrap+0x8/frame 0xfffffe00cdc811f0 --- trap 0xc, rip =3D 0xffffffff806e8d84, rsp =3D 0xfffffe00cdc812c0, rbp = =3D 0xfffffe00cdc812c0 --- vm_object_set_writeable_dirty() at vm_object_set_writeable_dirty+0x4/frame 0xfffffe00cdc812c0 vm_fault() at vm_fault+0x163f/frame 0xfffffe00cdc81400 vm_fault_quick_hold_pages() at vm_fault_quick_hold_pages+0x18a/frame 0xfffffe00cdc81480 vn_io_fault1() at vn_io_fault1+0x268/frame 0xfffffe00cdc815d0 vn_rdwr() at vn_rdwr+0x295/frame 0xfffffe00cdc816a0 vn_rdwr_inchunks() at vn_rdwr_inchunks+0x90/frame 0xfffffe00cdc81720 elf64_coredump() at elf64_coredump+0xbda/frame 0xfffffe00cdc81820 sigexit() at sigexit+0xba2/frame 0xfffffe00cdc81b00 postsig() at postsig+0x2f5/frame 0xfffffe00cdc81bc0 ast() at ast+0x2e7/frame 0xfffffe00cdc81bf0 doreti_ast() at doreti_ast+0x1f/frame 0x7fffffffdcb0 __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:55 55 __asm("movq %%gs:%P1,%0" : "=3Dr" (td) : "n" (offsetof(stru= ct pcpu, (kgdb) bt [=E2=80=A6] #8 <signal handler called> #9 vm_object_set_writeable_dirty (object=3D0x0) at /usr/src/sys/vm/vm_object.c:2236 #10 0xffffffff806d461f in vm_fault_dirty (entry=3D0xfffff8003205e000, m=3D0xfffffe0008806d60, prot=3D<optimized out>, fault_type=3D<optimized out>, fault_flags=3D0) at /usr/src/sys/vm/vm_fault.c:249 #11 vm_fault (map=3D0xfffff8002e7a5000, vaddr=3D140737488240640, fault_type= =3D1 '\001', fault_flags=3D0, m_hold=3D0xfffffe00cdc814c0) at /usr/src/sys/vm/vm_fault.c:1358 #12 0xffffffff806d58ba in vm_fault_quick_hold_pages (map=3D0xfffff8002e7a50= 00, addr=3D140737488240640, len=3D<optimized out>, prot=3D1 '\001', ma=3D0xfffffe00cdc81490, max_count=3D<optimized out>) at /usr/src/sys/vm/vm_fault.c:1657 #13 0xffffffff80510908 in vn_io_fault1 (vp=3D<optimized out>, uio=3D0xfffffe00cdc81608, args=3D0xfffffe00cdc81638, td=3D0xfffff80056797000) at /usr/src/sys/kern/vfs_vnops.c:1111 #14 0xffffffff80510565 in vn_rdwr (rw=3D<optimized out>, vp=3D0xfffff801264= f6000, base=3D<optimized out>, len=3D<optimized out>, offset=3D<optimized out>, segflg=3D<optimized ou= t>, ioflg=3D16641, active_cred=3D0xfffff80018530e00, file_cred=3D0x0, aresid=3D0xfffffe00c= dc816e0, td=3D0xfffff80056797000) at /usr/src/sys/kern/vfs_vnops.c:603 --=20 You are receiving this mail because: You are the assignee for the bug.=
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?bug-242961-227>