| Summary: | ipsec-tools-0.8.2: racoon segfaults on x86_64 arch | ||
|---|---|---|---|
| Product: | uClibc | Reporter: | Chris Frederick <cdf123> |
| Component: | Networking | Assignee: | unassigned |
| Status: | RESOLVED INVALID | ||
| Severity: | major | CC: | abhisheietk, uclibc-cvs |
| Priority: | P5 | ||
| Version: | 0.9.33.2 | ||
| Target Milestone: | --- | ||
| Hardware: | PC | ||
| OS: | Linux | ||
| Host: | x64 | Target: | x64 |
| Build: | x64 | ||
| Attachments: | buildroot-2014-05 config file | ||
What is the exact content of your /etc/TZ? Please attach your .config Can you provide a smallish, standalone reproducer? Created attachment 5798 [details]
buildroot-2014-05 config file
Here's the config for the 64bit build.
How smallish do you need the reproducer to be? I have a rootfs.cpio.xz of 12M. Also I build the kernel outside of buildroot, usually grsecurity patched. I can give you a patched and unpatched image, they are both around 4M.
I've moved on with a 32bit build, so the rootfs is a new build that doesn't have the /etc/TZ or /etc/localtime files in it, but it still produces the same error. I would like to get a full 64bit build working.
ipsec-tools-0.8.2 racoon with the racoon.conf.sample works for me:
time([1418647653]) = 1418647653
open("/etc/TZ", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/etc/localtime", O_RDONLY) = 4
read(4, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\6\0\0\0\6\0\0\0\0"..., 68) = 68
lseek(4, -68, SEEK_END) = 2143
read(4, "\t\0\0\34 \1\4\0\0\16\20\0\tLMT\0CEST\0CET\0\0\0\0\1\1\1"..., 68) = 68
close(4) = 0
sendto(3, "<30>Dec 15 13:47:33 racoon: INFO"..., 110, MSG_NOSIGNAL, NULL, 0) = 110
fork() = 7571
exit_group(0) = ?
AFAICS the segfault you are seeing comes from your grsecurity patch and is not a uClibc bug.
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All other applications work fine, and I have a "2014-5" release running almost identical config on x86 that works fine. It seems to die right after getting timezone info. I've tried using the built-in time options in make menuconfig, manually setting, and even removing timezone config files (/etc/TZ and /etc/localtime). It's always immediately after checking these files that the segfault occurs. == Output of "strace racoon -d -d -d" == ... connect(3, {sa_family=AF_LOCAL, sun_path="/dev/log"}, 16) = 0 (a whole bunch of "brk(0x0x67d000)" to "brk(0x694000)") brk(0x694000) = 0x694000 time([1407189506]) = 1407189506 open("/etc/TZ", O_RDONLY) = 4 read(4, "# America/Chicago\nCST6CDT,M3.2.0"..., 68) = 41 close(4) = 0 --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0} --- +++ killed by SIGSEGV +++ Segmentation fault == dmesg | tail == racoon[1588]: segfault at 0 ip 0000031fd77062d7 sp 000003ffd71c0be8 error 4 in libuClibc-0.9.34-git.so[31fd76dd000+52000] grsec: From 192.168.100.2: Segmentation fault occurred at (nil) in /usr/sbin/racoon[racoon:1588] uid/euid:0/0 gid/egid:0/0, parent /bin/bash[sh:1564] uid/euid:0/0 gid/egid:0/0 grsec: From 192.168.100.2: denied resource overstep by requesting 4096 for RLIMIT_CORE against limit 0 for /usr/sbin/racoon[racoon:1588] uid/euid:0/0 gid/egid:0/0, parent /bin/bash[sh:1564] uid/euid:0/0 gid/egid:0/0 I've tried rebuilding with 0.9.32.x, 0.9.33.x, and "daily snapshot", all three have the same segfault.