So: I apply Blaisorblad's 2.6.12-bb2-skas0 rollup patch, build with skas
support, and it crashes (as mentioned earlier) with:
VFS: Mounted root (hostfs filesystem) readonly.
Kernel panic - not syncing: get_skas_faultinfo : failed to wait for
SIGUSR1/SIGTRAP, pid = 7944, n = 7944, errno = 0, status = 0xb
And then a dump (which I pasted in a few messages back...)
Is there an obvious way to track this down further? I ran it under strace and
filtered out the setsigmask stuff, but unfortunately the result's not very
interesting. Lots of stuff happens, then:
waitpid(7944, [{WIFSTOPPED(s) && WSTOPSIG(s) == SIGSEGV}], WUNTRACED) = 7944
ptrace(PTRACE_GETREGS, 7944, 0, 0x88e1804) = 0
ptrace(PTRACE_GETFPXREGS, 7944, 0, 0x88e18b4) = 0
ptrace(PTRACE_CONT, 7944, 0, SIGSEGV) = 0
--- SIGCHLD (Child exited) @ 0 (0) ---
waitpid(7944, [{WIFSTOPPED(s) && WSTOPSIG(s) == SIGUSR1}], WUNTRACED) = 7944
getpid() = 7939
ptrace(PTRACE_SETREGS, 7944, 0, 0x88e7764) = 0
ptrace(PTRACE_CONT, 7944, 0, SIG_0) = 0
--- SIGCHLD (Child exited) @ 0 (0) ---
waitpid(7944, [{WIFSTOPPED(s) && WSTOPSIG(s) == SIGTRAP}], WUNTRACED) = 7944
ptrace(PTRACE_SETREGS, 7944, 0, 0x88e1804) = 0
ptrace(PTRACE_SETFPXREGS, 7944, 0, 0x88e18b4) = 0
ptrace(PTRACE_SYSCALL, 7944, 0, SIG_0) = 0
--- SIGCHLD (Child exited) @ 0 (0) ---
waitpid(7944, [{WIFSTOPPED(s) && WSTOPSIG(s) == SIGSEGV}], WUNTRACED) = 7944
ptrace(PTRACE_GETREGS, 7944, 0, 0x88e1804) = 0
ptrace(PTRACE_GETFPXREGS, 7944, 0, 0x88e18b4) = 0
ptrace(PTRACE_CONT, 7944, 0, SIGSEGV) = 0
waitpid(7944, [{WIFSIGNALED(s) && WTERMSIG(s) == SIGSEGV}], WUNTRACED) = 7944
--- SIGCHLD (Child exited) @ 0 (0) ---
ioctl(1, SNDCTL_TMR_TIMEBASE or TCGETS, 0x88e793c) = -1 ENOTTY (Inappropriate
ioctl for device)
write(1, "Kernel panic - not syncing: get_"..., 131) = 131
And so on through a ptrace of it dumping stack.
Am I doing it right? Is there anything I can do to help track this down?
Rob
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