This is the second time make has hung reading a pipe. It occurred at exactly the same place in both cases (end of gcc bootstrap). System is 32-bit UP kernel running on c3750. I have seen it now with 2.6.30.9 and 2.6.31.6. I have to think this is libc6 related. Current version is 2.10.1-7. I haven't seen the problem with 64-bit kernel. I also have noticed that logins via ssh and su take a long time after the system runs for awhile. They are quite right after boot. Here's some random data that I collected from the first hang: dave@hiauly6:~/gnu/gcc/objdir$ /usr/bin/gdb /usr/bin/make 4506 GNU gdb (GDB) 7.0-debian Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "hppa-linux-gnu". For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>... Reading symbols from /usr/bin/make...(no debugging symbols found)...done. Attaching to program: /usr/bin/make, process 4506 Reading symbols from /lib/librt.so.1...Reading symbols from /usr/lib/debug/lib/librt-2.10.1.so...done. (no debugging symbols found)...done. Loaded symbols for /lib/librt.so.1 Reading symbols from /lib/libc.so.6...Reading symbols from /usr/lib/debug/lib/libc-2.10.1.so...done. (no debugging symbols found)...done. Loaded symbols for /lib/libc.so.6 Reading symbols from /lib/libpthread.so.0...Reading symbols from /usr/lib/debug/lib/libpthread-2.10.1.so...done. [Thread debugging using libthread_db enabled] (no debugging symbols found)...done. Loaded symbols for /lib/libpthread.so.0 Reading symbols from /lib/ld.so.1...Reading symbols from /usr/lib/debug/lib/ld-2.10.1.so...done. (no debugging symbols found)...done. Loaded symbols for /lib/ld.so.1 0x4098607c in read () from /lib/libc.so.6 (gdb) bt #0 0x4098607c in read () from /lib/libc.so.6 #1 0x0001eb6c in ?? () #2 0x0001ec4c in ?? () #3 0x00021af0 in main () (gdb) disass 0x4098606c 0x4098608c Dump of assembler code from 0x4098606c to 0x4098608c: 0x4098606c <read+24>: cmpib,<>,n 0,ret0,0x409860a0 <read+76> 0x40986070 <read+28>: copy r19,r3 0x40986074 <read+32>: be,l 100(sr2,r0),sr0,r31 0x40986078 <read+36>: ldi 3,r20 0x4098607c <read+40>: ldi -1000,r1 0x40986080 <read+44>: cmpb,>>=,n r1,ret0,0x40986100 <read+172> 0x40986084 <read+48>: copy r3,r19 0x40986088 <read+52>: b,l 0x409a7c38,rp End of assembler dump. dave@hiauly6:/proc/4506$ cat status Name: make State: S (sleeping) Tgid: 4506 Pid: 4506 PPid: 2836 TracerPid: 0 Uid: 1002 1002 1002 1002 Gid: 1002 1002 1002 1002 FDSize: 256 Groups: 0 4 100 119 1002 1003 VmPeak: 3460 kB VmSize: 3460 kB VmLck: 0 kB VmHWM: 2260 kB VmRSS: 2240 kB VmData: 1500 kB VmStk: 88 kB VmExe: 160 kB VmLib: 1652 kB VmPTE: 20 kB Threads: 1 SigQ: 0/16382 SigPnd: 0000000000000000 ShdPnd: 0000000000000000 SigBlk: 0000000000000000 SigIgn: 0000000000000001 SigCgt: 000000330002c006 CapInh: 0000000000000000 CapPrm: 0000000000000000 CapEff: 0000000000000000 CapBnd: fffffffffffffeff voluntary_ctxt_switches: 27 nonvoluntary_ctxt_switches: 17 dave@hiauly6:/proc/4506/fdinfo$ cat 3 pos: 0 flags: 00 dave@hiauly6:/proc/4506/fd$ ls -l total 0 l-wx------ 1 dave dave 64 Nov 29 11:00 0 -> /dev/null l-wx------ 1 dave dave 64 Nov 29 11:00 1 -> /home/dave/gnu/gcc-4.5/objdir/build.log l-wx------ 1 dave dave 64 Nov 29 11:00 2 -> /home/dave/gnu/gcc-4.5/objdir/build.log lr-x------ 1 dave dave 64 Nov 29 11:00 3 -> pipe:[23677] lr-x------ 1 dave dave 64 Nov 29 11:00 6 -> /home/dave/gnu/gcc-4.5/gcc-4.5 lr-x------ 1 dave dave 64 Nov 29 11:00 7 -> pipe:[23678] Processes 23677 and 23678 are non existant. In the current hang, I see: dave@hiauly6:/proc/23324/fd$ ls -l total 0 l-wx------ 1 dave dave 64 Dec 2 19:49 0 -> /dev/null l-wx------ 1 dave dave 64 Dec 2 19:49 1 -> /home/dave/gnu/gcc-4.5/objdir/build.log l-wx------ 1 dave dave 64 Dec 2 19:49 2 -> /home/dave/gnu/gcc-4.5/objdir/build.log lr-x------ 1 dave dave 64 Dec 2 19:49 3 -> pipe:[1383769] lr-x------ 1 dave dave 64 Dec 2 19:49 6 -> /home/dave/gnu/gcc-4.5/gcc-4.5 lr-x------ 1 dave dave 64 Dec 2 19:49 7 -> pipe:[1383770] Not sure what the pipe numbers mean... The current hang could be debugged more if anybody has further ideas. Any thoughts? Dave -- J. David Anglin dave.anglin@xxxxxxxxxxxxxx National Research Council of Canada (613) 990-0752 (FAX: 952-6602) -- To unsubscribe from this list: send the line "unsubscribe linux-parisc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
