So I'm trying to migrate from 2.4 to 2.6 across the board. I've been at 2.6 everywhere but UML for some time, but this problem is defeating me.
I'm running UML on a GCC-3.4.3-compiled 2.6.11.7-skas3-v8-rc5 host (to be .9 when next I reboot) running glibc-2.3.5, like this (simplified from longer line which also fails): /usr/bin/nice -n -10 su firewall -c "LD_ASSUME_KERNEL=2.4.29 uml-esperi" Now on a 2.4 UML that works fine (well, obviously *that* line panics because it doesn't specify a root fs. But the longer line works, and in 2.6 both fail the same way). In 2.6 I see this: Checking for /proc/mm...found Checking for the skas3 patch in the host...found [dead] A gdb backtrace shows this: Attaching to program: /usr/packages/linux/i586-esperi/linux, process 6587 Reading symbols from /lib/libutil.so.1...done. Loaded symbols for /lib/libutil.so.1 Reading symbols from /lib/libc.so.6...done. Loaded symbols for /lib/libc.so.6 Reading symbols from /lib/ld-linux.so.2...done. Loaded symbols for /lib/ld-linux.so.2 0x0805df94 in __const_udelay () (gdb) bt #0 0x0805df94 in __const_udelay () #1 0x0807284b in panic () #2 0x081b9220 in __func__.4 () #3 0x00000001 in ?? () #4 0x08072831 in panic () #5 0x0000000a in ?? () #6 0x000019bc in ?? () #7 0x0806c95f in init_registers () #8 0x000019bc in ?? () #9 0x000019bc in ?? () #10 0x000019bc in ?? () #11 0x000019bc in ?? () #12 0x0805ab01 in can_do_skas () #13 0x00000000 in ?? () #14 0xbffff2e0 in ?? () #15 0x00000000 in ?? () #16 0x00000000 in ?? () #17 0x0000000a in ?? () #18 0xb7ee9000 in ?? () #19 0x08200cc0 in system_state () #20 0x00000000 in ?? () #21 0xbffff444 in ?? () #22 0x0805edf0 in linux_main () #23 0x00000001 in ?? () #24 0x081cb478 in __initcall_stderr_console_init () #25 0x08242050 in ?? () #26 0x0000000a in ?? () #27 0x08059159 in main () which looks to me like a panic. (Why can't I see it? Where's the panic message going? All the *other* messages go straight to the console, as they ought.) The crashing routine is (probably) init_registers(), which checks for the presence of PTRACE_GETREGS, PTRACE_GETFPXREGS, and PTRACE_GETFPREGS on the host --- which certainly look like they're there to me. How to test if they *work* I have not a clue. Any suggestions? -- `End users are just test loads for verifying that the system works, kind of like resistors in an electrical circuit.' - Kaz Kylheku in c.o.l.d.s ------------------------------------------------------- This SF.Net email is sponsored by Oracle Space Sweepstakes Want to be the first software developer in space? Enter now for the Oracle Space Sweepstakes! http://ads.osdn.com/?ad_id=7393&alloc_id=16281&op=click _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
