JB wrote:
Frantisek Hanzlik<franta<at> hanzlici.cz> writes:
After fresh Fedora install (from Fedora repo only) I found in "/var/log/messages" records as:
Oct 1 07:08:26 ns kernel: ------------[ cut here ]------------ Oct 1 07:08:26 ns kernel: WARNING: at lib/dma-debug.c:791 check_unmap+0x7a/0x59b() Oct 1 07:08:26 ns kernel: Hardware name: EP45-DQ6 Oct 1 07:08:26 ns kernel: dl2k 0000:09:00.0: DMA-API: device driver tries to free an invalid DMA memory address Oct 1 07:08:26 ns kernel: Modules linked in: bluetooth rfkill nf_nat_ftp nf_conntrack_ftp iptable_nat nf_nat xt_u32 ipt_LOG xt_limit uinput iTCO_wdt i2c_i801 iTCO_vendor_support r8169 mii i2c_core dl2k microcode raid1 [last unloaded: hwmon_vid] Oct 1 07:08:26 ns kernel: Pid: 2454, comm: ip Tainted: G W 2.6.35.4-28.fc14.i686.PAE #1 Oct 1 07:08:26 ns kernel: Call Trace: Oct 1 07:08:26 ns kernel: [<c0441f39>] warn_slowpath_common+0x6a/0x7f ... Oct 1 07:08:26 ns kernel: ---[ end trace a70d91368aa35943 ]---
Oops itself is probably suited for bug report, but what isn't clear for me is line Oct 1 07:08:26 ns kernel: Pid: 2454, comm: ip Tainted: G W 2.6.35.4-28.fc14.i686.PAE #1
Which module caused that kernel is tainted? I suppose Fedora contains only open SW including kernel modules, isn't then there something wrong?
Thanks, Franta Hanzlík
Hi, an answer from test mailing list.
From kernel doc
" 1: 'G' if all modules loaded have a GPL or compatible license, 'P' if any proprietary module has been loaded. Modules without a MODULE_LICENSE or with a MODULE_LICENSE that is not recognised by insmod as GPL compatible are assumed to be proprietary. "
" 10: 'W' if a warning has previously been issued by the kernel. (Though some warnings may set more specific taint flags.) "
JB
Hello Miss JB, i just found your answer, as you wrote it, in kernel-doc Fedora RPM package (/usr/share/doc/stable.knl/Documentation/oops-tracing.txt). I previous had some phantasy how should be "desperate" tainting module dislosured - but it was probable other kernel in other universe. Thanks