gvim hangs in squeeze release(debian) with root account, but not with common account.

tomtforever · 04-14-2013, 03:40 AM

below is output by strace.

Code:

     0.000047 mmap2(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0xac593000
     0.000069 mprotect(0xac593000, 4096, PROT_NONE) = 0
     0.000049 clone(child_stack=0xacd93404, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0xacd93bd8, {entry_number:6, base_addr:0xacd93b70, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}, child_tidptr=0xacd93bd8) = 5351
     0.000083 fcntl64(12, F_GETFL)      = 0x2 (flags O_RDWR)
     0.000041 fcntl64(12, F_SETFL, O_RDWR|O_NONBLOCK) = 0
     0.000106 send(11, "\0\0\0\0\0\0\0\0007\0\0\0\0\0\0\0\0\0\0\0\2\0\0\0\1\0\0\0\0\0\0\0"..., 55, 0) = 55
     0.000111 clock_gettime(CLOCK_MONOTONIC, {56325, 363265233}) = 0
     0.000120 mmap2(NULL, 8392704, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0xabd92000
     0.000060 mprotect(0xabd92000, 4096, PROT_NONE) = 0
     0.000045 clone(child_stack=0xac592404, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0xac592bd8, {entry_number:6, base_addr:0xac592b70, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}, child_tidptr=0xac592bd8) = 5352
     0.000144 futex(0x98a250c, FUTEX_WAIT_PRIVATE, 1, NULL) = 0
     5.010217 futex(0x988a420, FUTEX_LOCK_PI_PRIVATE, 1) = 0
     0.000356 futex(0x988a420, FUTEX_UNLOCK_PI_PRIVATE, -1229393932) = 0
     0.000061 send(9, "W", 1, MSG_NOSIGNAL) = -1 ENOTSOCK (Socket operation on non-socket)
     0.000037 write(9, "W", 1)          = 1
     0.000037 futex(0x988a420, FUTEX_UNLOCK_PI_PRIVATE, -1229393932) = 0
     0.000080 munmap(0xacd94000, 67112960) = 0
     0.000047 unlink("/dev/shm/pulse-shm-1410255676") = 0
     0.000116 close(8)                  = 0
     0.000030 close(9)                  = 0
     0.000083 munmap(0xb10af000, 26420) = 0

greenleaf · 04-18-2013, 05:01 AM

I do not run Debian. However it might be an idea to check that both root and common account get the same libraries loaded for gvim. Login as one of these ids, find out which version of gvim that id uses (perhaps via which gvim), and then check the libraries that will be used via ldd. So you could do something like
which gvim
For me this gives /usr/bin/gvim
Then
ldd /usr/bin/gvim (or whatever you got from which) > file1
You then need to strip off the load addresses from the resultant file.

To make this process a bit easier you could use ldd, which and sed (stream editor) together in order to get just the library names with one operation. That would look like this:
ldd `which gvim` | sed -e 's/ (.*//' > filex
where x is 1 or 2, depending on whether you are running the command as user root or as user common account. Note that getting all the characters right for this command is important, so it might be best to do it via copy and paste.

You would have to do this for both accounts, and then compare file1 and file2, looking for differences in library paths (not addresses), via
diff file1 file2

If you see something other than a null result from this difference calculation, then it suggests that you have multiple versions of the same library, and a little housekeeping may be called for. If the result is null then its probably not a problem associated with different versions of the same library.