On Sun, Nov 06, 2016 at 11:13:56AM +0100, O. Hartmann wrote: > Yesterday, I ran the whole day (> 9 hours) without problems r307233 without the reported > crash. > > Today's morning I got brave and tried r307234 - and had a crash within an hour. Thanks for confirming - I cc'ed glebius_at_ and ae_at_, who can provide more insight than me. I was just trying to narrow down the problem to a specific commit. > > > > > > > > > Attached, you'll find the backtrace report as last time. I had to type in "dump" > > > blindly on the system as a dark screen or a stuck X11 screen blocked the console (I > > > use vt() and nVidia BLOB with my nVidia GPUs - and this is still broken on FBSD). > > > > > > Please let me know how I can assist further. I saved both the core AND this time the > > > culprit kernel. > > > > Great, thank you. I would first like to confirm that r307234 is indeed > > causing the crash - since it appears to be easy to trigger, that should > > be faster. If not, the core will help track down the real problem. > > Although I was under the impression the in-kernel-config option > > makeoptions DEBUG=-g > > would make debugging symbols available, I'm proved wrong. > > I tried also on > > FreeBSD 12.0-CURRENT #15 r308329: Sat Nov 5 08:52:24 CET 2016 > > and crashed, from which I picked up kernel and vmcore as well as > the text of the backtrace as provided in an earlier mail (see below at [core.txt.0], and > if I perform this suggested command sequence: > > ohartmann_at_thor [kernel_debug]: kgdb ./kernel vmcore.0 > GNU gdb 6.1.1 [FreeBSD] > Copyright 2004 Free Software Foundation, Inc. > GDB is free software, covered by the GNU General Public License, and you are > welcome to change it and/or distribute copies of it under certain conditions. > Type "show copying" to see the conditions. > There is absolutely no warranty for GDB. Type "show warranty" for details. > This GDB was configured as "amd64-marcel-freebsd"...(no debugging symbols found)... > Attempt to extract a component of a value that is not a structure pointer. > Attempt to extract a component of a value that is not a structure pointer. > #0 0xffffffff807b8d83 in doadump () > (kgdb) frame 12 > #12 0xffffffff80923a74 in ip_output () > (kgdb) p *ifp > No symbol table is loaded. Use the "file" command. > (kgdb) p *ro > No symbol table is loaded. Use the "file" command. > (kgdb) > > Again, I'm doing this kind of debugging the very first time and I miss something here, > apologizes for that. Hm, I'm not sure what the problem is. When a kernel is installed and WITHOUT_KERNEL_SYMBOLS is not set in src.conf, debug symbols should automatically be installed to /usr/lib/debug/boot/kernel. > > Sorry about the redundancy. > > The curious thing to me is that this bug is triggered on systems with Intel CPU > architectures older or equal than IvyBridge. The very same /etc/make.conf > and /etc/src.conf as well as the very same kernel config apart from some local hardware > dependend modifications are spread around my servers and workstations and especially my > bureau's box is a sHaswell XEON with almost the exact same confict running on CURRENT > (recent as of Thursday) without problems while the box I'm reporting this error from is > crashing (i3-3220, the server, also crashing here, is a E3-1245 V2. Another crashing > system is a 2009 C2D XEON 5XXX, two socket server, crashing the same way, but with a > different kernel config. > I tried on the crashing systems with GENERIC as well with the same results. > > I'm using IPFW as the firewall on all systems. > > Please tell me if you revert some commits, I'll then checkout the sources up to recent > CURRENT and try again. > > This just for addition and completion. > > > Kind regards and thanks in advance, > > Oliver > > [...] > [core.txt.0] > ... > Fatal trap 9: general protection fault while in kernel mode > cpuid = 0; apic id = 00 > instruction pointer = 0x20:0xffffffff807b44fb > stack pointer = 0x28:0xfffffe0238f7c290 > frame pointer = 0x28:0xfffffe0238f7c310 > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, long 1, def32 0, gran 1 > processor eflags = interrupt enabled, resume, IOPL = 0 > current process = 521 (nslcd) > > Reading symbols from /boot/modules/nvidia-modeset.ko...done. > Loaded symbols for /boot/modules/nvidia-modeset.ko > Reading symbols from /boot/modules/nvidia.ko...done. > Loaded symbols for /boot/modules/nvidia.ko > #0 doadump (textdump=0) at pcpu.h:222 > 222 pcpu.h: No such file or directory. > in pcpu.h > (kgdb) #0 doadump (textdump=0) at pcpu.h:222 > #1 0xffffffff8049e1eb in db_dump (dummy=<value optimized out>, dummy2=false, > dummy3=0, dummy4=0x0) at /usr/src/sys/ddb/db_command.c:546 > #2 0xffffffff8049dfe9 in db_command (cmd_table=<value optimized out>) > at /usr/src/sys/ddb/db_command.c:453 > #3 0xffffffff8049dd44 in db_command_loop () > at /usr/src/sys/ddb/db_command.c:506 > #4 0xffffffff804a11af in db_trap (type=<value optimized out>, > code=<value optimized out>) at /usr/src/sys/ddb/db_main.c:248 > #5 0xffffffff807fd3e3 in kdb_trap (type=<value optimized out>, > code=<value optimized out>, tf=<value optimized out>) > at /usr/src/sys/kern/subr_kdb.c:654 > #6 0xffffffff80afeaf1 in trap_fatal (frame=0xfffffe0238f7c1d0, eva=0) > at /usr/src/sys/amd64/amd64/trap.c:796 > #7 0xffffffff80afe7df in trap (frame=0xfffffe0238f7c1d0) > at /usr/src/sys/amd64/amd64/trap.c:198 > #8 0xffffffff80adf4a1 in calltrap () > at /usr/src/sys/amd64/amd64/exception.S:236 > #9 0xffffffff807b44fb in __rw_wlock_hard (c=<value optimized out>, > tid=<value optimized out>, file=<value optimized out>, > line=<value optimized out>) at /usr/src/sys/kern/kern_rwlock.c:830 > #10 0xffffffff807b437c in _rw_wlock_cookie (c=0xfffff80070538310, > file=0xffffffff80ca31b2 "/usr/src/sys/net/if_ethersubr.c", line=304) > at /usr/src/sys/kern/kern_rwlock.c:296 > #11 0xffffffff808d1e07 in ether_output (ifp=0xfffff800036e7800, > m=<value optimized out>, dst=0xfffff8003d980e60, ro=0xfffff8003d980e40) > at /usr/src/sys/net/if_ethersubr.c:304 > #12 0xffffffff80923a74 in ip_output (m=0xfffff8000a24a500, > opt=<value optimized out>, ro=<value optimized out>, flags=0, imo=0x0, > inp=<value optimized out>) at /usr/src/sys/netinet/ip_output.c:664 > #13 0xffffffff8099a7ee in tcp_output (tp=<value optimized out>) > at /usr/src/sys/netinet/tcp_output.c:1432 > #14 0xffffffff809a7c88 in tcp_usr_send (so=<value optimized out>, > flags=<value optimized out>, m=0xfffff8003d837800, nam=0x0, > control=<value optimized out>, td=0xfffff8000a24a500) > at /usr/src/sys/netinet/tcp_usrreq.c:956 > #15 0xffffffff808567b4 in sosend_generic (so=<value optimized out>, > addr=<value optimized out>, uio=<value optimized out>, > top=0xfffff8003d837800, control=<value optimized out>, > flags=<value optimized out>, td=<value optimized out>) > at /usr/src/sys/kern/uipc_socket.c:1359 > #16 0xffffffff8082d672 in soo_write (fp=<value optimized out>, > uio=0xfffffe0238f7c900, active_cred=<value optimized out>, > flags=<value optimized out>, td=<value optimized out>) > at /usr/src/sys/kern/sys_socket.c:146 > #17 0xffffffff80823d84 in dofilewrite (td=0xfffff8000a24a500, fd=7, > fp=0xfffff8000a0421e0, auio=0xfffffe0238f7c900, > offset=<value optimized out>, flags=0) at file.h:311 > #18 0xffffffff80823ac8 in kern_writev (td=0xfffff8000a24a500, fd=7, > auio=0xfffffe0238f7c900) at /usr/src/sys/kern/sys_generic.c:508 > #19 0xffffffff80823a54 in sys_write (td=0xfffff800705382f8, > uap=<value optimized out>) at /usr/src/sys/kern/sys_generic.c:421 > #20 0xffffffff80aff33f in amd64_syscall (td=0xfffff8000a24a500, > traced=<value optimized out>) at subr_syscall.c:135 > #21 0xffffffff80adf78b in Xfast_syscall () > at /usr/src/sys/amd64/amd64/exception.S:396 > #22 0x0000000801261f5a in ?? () > Previous frame inner to this frame (corrupt stack?) > Current language: auto; currently minimal > (kgdb) > [...] > -- > O. Hartmann > > Ich widerspreche der Nutzung oder Übermittlung meiner Daten für > Werbezwecke oder für die Markt- oder Meinungsforschung (§ 28 Abs. 4 BDSG).Received on Tue Nov 08 2016 - 17:23:17 UTC
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