> > > > If you attach a debugger to it, can you find out where it's stuck? (Or > > at least run "pstack `pgrep pppd`"?) > > I'll try that. Right now the system is in the middle of a 72 hour > test, but after that I'll force a hang and see what I get. > > > > The symptoms sound like a kernel bug, but it's hard to tell. > Well, I set pppd to disconnect after 11 hours, 17 minutes, 11 seconds, and when it did, the process hung, again. It won't respond to SIGTERM or SIGHUP. The command "pstack `pgrep pppd`" returns: 2875: /usr/sbin/pppd call cricket (No symbols found) 0xb7f14424: ???? (8, 2, 808e580, bff2eaa8, 97aeea0, 97aeeb8) 0x08069654: ???? (8, ffffffff) 0x0806d751: ???? (807bee4, 0, 0, bff2eaf8, 808b884, ffffffff) 0x08062ca9: ???? (0, 0, 0, 806656f, 80813ae, 807c098) + 10 0x0805164b: ???? (80905e0, 80905e4, c, b3b, 0, c) + b0 0x0805226f: ???? (807bc70, 804f930, bff2ec38, b7d50455, 3, bff2ec64) + 50 0xb7d50455: ???? (8051890, 3, bff2ec64, 807bc70, 807bc60, b7f23250) + 400d13a8 Here is the output from lsof for pppd: pppd 2875 root cwd DIR 3,2 4096 2 / pppd 2875 root rtd DIR 3,2 4096 2 / pppd 2875 root txt REG 3,2 269156 300045 /usr/sbin/pppd pppd 2875 root mem REG 3,2 42504 246945 /lib/i686/cmov/libnss_files-2.7.so pppd 2875 root mem REG 3,2 38444 246947 /lib/i686/cmov/libnss_nis-2.7.so pppd 2875 root mem REG 3,2 87800 246942 /lib/i686/cmov/libnsl-2.7.so pppd 2875 root mem REG 3,2 30436 246943 /lib/i686/cmov/libnss_compat-2.7.so pppd 2875 root mem REG 3,2 1413540 246936 /lib/i686/cmov/libc-2.7.so pppd 2875 root mem REG 3,2 166340 99420 /usr/lib/libpcap.so.0.9.8 pppd 2875 root mem REG 3,2 9680 246939 /lib/i686/cmov/libdl-2.7.so pppd 2875 root mem REG 3,2 40440 237629 /lib/libpam.so.0.81.12 pppd 2875 root mem REG 3,2 38296 246938 /lib/i686/cmov/libcrypt-2.7.so pppd 2875 root mem REG 3,2 8192 319525 /var/run/pppd2.tdb pppd 2875 root mem REG 3,2 113248 237570 /lib/ld-2.7.so pppd 2875 root 0u CHR 1,3 586 /dev/null pppd 2875 root 1u CHR 1,3 586 /dev/null pppd 2875 root 2u CHR 1,3 586 /dev/null pppd 2875 root 3u unix 0xd391e900 8193 socket pppd 2875 root 4u CHR 1,3 586 /dev/null pppd 2875 root 5u sock 0,4 8204 can't identify protocol pppd 2875 root 6u sock 0,4 8205 can't identify protocol pppd 2875 root 7u REG 3,2 8192 319525 /var/run/pppd2.tdb pppd 2875 root 8u CHR 166,0 4814 /dev/ttyACM0 grep 9141 root 1w REG 3,2 475 308542 /etc/ppp/pppdhang.txt I am not deeply familiar with Linux. What is a good debugger available for it, preferably from a Debian mirror? -- To unsubscribe from this list: send the line "unsubscribe linux-ppp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
