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[PATCH] i386: extra checks in show_registers()

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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 <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Chuck Ebbert 2006-06-23 02:04:31 -07:00 committed by Linus Torvalds
parent 722f4f5b26
commit 7e04a1183e
1 changed files with 3 additions and 2 deletions
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5
arch/i386/kernel/traps.c
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@ -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..