Messages in this thread | | | Date | Mon, 19 Apr 2010 14:44:57 -0700 | From | Randy Dunlap <> | Subject | Re: [Bugme-new] [Bug 15812] New: utsname.domainname not set in x86_32 processes (causing "YPBINDPROC_DOMAIN: domain not bound" errors) |
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On Mon, 19 Apr 2010 21:29:15 GMT bugzilla-daemon@bugzilla.kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=15812 > > Summary: utsname.domainname not set in x86_32 processes > (causing "YPBINDPROC_DOMAIN: domain not bound" errors) > Product: Platform Specific/Hardware > Version: 2.5 > Kernel Version: 2.6.34-rc4 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: x86-64 > AssignedTo: platform_x86_64@kernel-bugs.osdl.org > ReportedBy: adi@hexapodia.org > CC: hch@lst.de > Regression: Yes > > > 2.6.34-rc4 uname(2) from a x86_32 process copies out 325 bytes rather than the > 390 bytes that 2.6.31 copied out (and that userland expects):
Just to clarify (?), that's a 32-bit process on a 64-bit kernel, right?
> 2.6.31.12% cat foo.c > main() > { > char buf[1000]; > memset(buf, 'x', sizeof(buf)); > uname(buf); > write(1, buf, sizeof(buf)); > return 0; > } > 2.6.31.12% i686-linux-gcc foo.c > 2.6.31.12% ./a.out | hd > 00000000 4c 69 6e 75 78 00 00 00 00 00 00 00 00 00 00 00 |Linux...........| > 00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| > * > 00000040 00 63 76 70 65 34 33 30 30 00 00 00 00 00 00 00 |.cvpe4300.......| > 00000050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| > * > 00000080 00 00 32 2e 36 2e 33 31 2e 31 32 2d 63 76 70 32 |..2.6.31.12-cvp2| > 00000090 30 31 30 30 33 32 39 2d 30 30 31 34 38 2d 67 39 |0100329-00148-g9| > 000000a0 61 38 62 36 36 61 00 00 00 00 00 00 00 00 00 00 |a8b66a..........| > 000000b0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| > 000000c0 00 00 00 23 36 20 53 4d 50 20 54 75 65 20 41 70 |...#6 SMP Tue Ap| > 000000d0 72 20 36 20 31 36 3a 30 33 3a 33 31 20 50 44 54 |r 6 16:03:31 PDT| > 000000e0 20 32 30 31 30 00 00 00 00 00 00 00 00 00 00 00 | 2010...........| > 000000f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| > 00000100 00 00 00 00 78 38 36 5f 36 34 00 00 00 00 00 00 |....x86_64......| > 00000110 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| > * > 00000140 00 00 00 00 00 28 6e 6f 6e 65 29 00 00 00 00 00 |.....(none).....| > 00000150 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| > * > 00000180 00 00 00 00 00 00 78 78 78 78 78 78 78 78 78 78 |......xxxxxxxxxx| > 00000190 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 |xxxxxxxxxxxxxxxx| > * > 000003e0 78 78 78 78 78 78 78 78 |xxxxxxxx| > 000003e8 > > 2.6.34-rc4% ./a.out | hd > 00000000 4c 69 6e 75 78 00 00 00 00 00 00 00 00 00 00 00 |Linux...........| > 00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| > * > 00000040 00 63 76 70 2d 6c 6f 61 6e 65 72 2d 31 36 00 00 |.cvp-loaner-16..| > 00000050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| > * > 00000080 00 00 32 2e 36 2e 33 34 2d 72 63 34 2d 30 30 31 |..2.6.34-rc4-001| > 00000090 31 35 2d 67 64 63 35 37 64 61 33 00 00 00 00 00 |15-gdc57da3.....| > 000000a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| > * > 000000c0 00 00 00 23 36 20 53 4d 50 20 46 72 69 20 41 70 |...#6 SMP Fri Ap| > 000000d0 72 20 31 36 20 31 30 3a 34 31 3a 34 33 20 50 44 |r 16 10:41:43 PD| > 000000e0 54 20 32 30 31 30 00 00 00 00 00 00 00 00 00 00 |T 2010..........| > 000000f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| > 00000100 00 00 00 00 78 38 36 5f 36 34 00 00 00 00 00 00 |....x86_64......| > 00000110 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| > * > 00000140 00 00 00 00 00 78 78 78 78 78 78 78 78 78 78 78 |.....xxxxxxxxxxx| > 00000150 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 78 |xxxxxxxxxxxxxxxx| > * > 000003e0 78 78 78 78 78 78 78 78 |xxxxxxxx| > 000003e8 > > This results in 32-bit applications that attempt to use libnss_nis's getpwuid() > to fail with "YPBINDPROC_DOMAIN: Domain not bound", because they use an > uninitialized value for domainname. > > -- > Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email > ------- You are receiving this mail because: ------- > You are on the CC list for the bug.
--- ~Randy
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