From: Chuck Ebbert <76306.1226@compuserve.com> Date: Fri, 23 Jun 2006 09:04:31 +0000 (-0700) Subject: [PATCH] i386: extra checks in show_registers() X-Git-Tag: v2.6.18-rc1~1081^2~110 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7e04a1183eac3e6b3570a154c8677fd9184b51e7;p=linux-2.6 [PATCH] i386: extra checks in show_registers() Sometimes thread_info and task_struct get out-of-sync with each other. Printing task.thread_info in show_registers() can help spot this. And when task_struct is corrupt then task.comm can contain garbage, so only print as many characters as it can hold. Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com> Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c index df9d210626..dcc14477af 100644 --- a/arch/i386/kernel/traps.c +++ b/arch/i386/kernel/traps.c @@ -274,8 +274,9 @@ void show_registers(struct pt_regs *regs) regs->esi, regs->edi, regs->ebp, esp); printk(KERN_EMERG "ds: %04x es: %04x ss: %04x\n", regs->xds & 0xffff, regs->xes & 0xffff, ss); - printk(KERN_EMERG "Process %s (pid: %d, threadinfo=%p task=%p)", - current->comm, current->pid, current_thread_info(), current); + printk(KERN_EMERG "Process %.*s (pid: %d, ti=%p task=%p task.ti=%p)", + TASK_COMM_LEN, current->comm, current->pid, + current_thread_info(), current, current->thread_info); /* * When in-kernel, we also print out the stack and code at the * time of the fault..