Messages in this thread | | | Date | Sun, 7 Dec 2003 12:40:10 -0200 (BRST) | From | Marcelo Tosatti <> | Subject | Re: 2.4.23 hard lock, 100% reproducible. |
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The first oops looks like:
Unable to handle kernel NULL pointer dereference at virtual address: 00000000
printing eip: c02363dd *pde=00000000 Oops: 0000 CPU: 0 EIP: 0010:[<c02363d>] Not tainted EFLAGS: 00010217
eax: 00000006 ebx: 00000000 ecx: 7a01a8c0 ecx: c700b2a0 esi: c0299ce0 edi: 000001b7 ebp: c0299d94 esp: c0299c54 ds: 0018 es: 0018 ss: 0018
process: swapper (pid: 0, stackpage = c0299000)
Isnt it a bit weird that the full backtrace is not reported ?
wli suggests that might stack corruption.
I dont see any suspicious change around tcp_print_conntrack().
Any clues?
On Sun, 7 Dec 2003, Mark Symonds wrote:
> > [...] > > > > addr2line requires compiling with -g. You can also do > > ksymoops -m /path/to/your/System.map -A c02363dd > > which does not require a recompile. > > > > Excellent, this is alot easier. Should note that this > kernel is compiled without support for loadable modules. > Here goes: > > ------------- > > puggy:/usr/src/linux/2.4.23# ksymoops -m ./System.map -A c02363dd > ksymoops 2.4.9 on i686 2.4.23. Options used > -V (default) > -k /proc/ksyms (default) > -l /proc/modules (default) > -o /lib/modules/2.4.23/ (default) > -m ./System.map (specified) > > Error (regular_file): read_ksyms stat /proc/ksyms failed > ksymoops: No such file or directory > No modules in ksyms, skipping objects > No ksyms, skipping lsmod > > > Adhoc c02363dd <tcp_print_conntrack+2d/60> > > 1 error issued. Results may not be reliable. > puggy:/usr/src/linux/2.4.23#
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