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| author | Andi Kleen <ak@suse.de> | 2006-07-28 14:44:57 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-28 19:28:00 -0700 |
| commit | c97d20a6c51067a38f53680d9609b4cf2867d077 (patch) | |
| tree | 59867ac01d1b752ba7e520e33f9f84cade6d024e /arch | |
| parent | b783fd925cdd56d24d164e5bdcb072f2a67aedf4 (diff) | |
| download | kernel_samsung_smdk4412-c97d20a6c51067a38f53680d9609b4cf2867d077.zip kernel_samsung_smdk4412-c97d20a6c51067a38f53680d9609b4cf2867d077.tar.gz kernel_samsung_smdk4412-c97d20a6c51067a38f53680d9609b4cf2867d077.tar.bz2 | |
[PATCH] i386: Do backtrace fallback too
Similar patch to earlier x86-64 patch. When the dwarf2 unwinder fails
dump the left over stack with the old unwinder.
Also some clarifications in the headers.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/i386/kernel/traps.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c index 313ac1f..3facc8f 100644 --- a/arch/i386/kernel/traps.c +++ b/arch/i386/kernel/traps.c @@ -187,10 +187,21 @@ static void show_trace_log_lvl(struct task_struct *task, struct pt_regs *regs, if (unwind_init_blocked(&info, task) == 0) unw_ret = show_trace_unwind(&info, log_lvl); } - if (unw_ret > 0) { - if (call_trace > 0) + if (unw_ret > 0 && !arch_unw_user_mode(&info)) { +#ifdef CONFIG_STACK_UNWIND + print_symbol("DWARF2 unwinder stuck at %s\n", + UNW_PC(info.regs)); + if (call_trace == 1) { + printk("Leftover inexact backtrace:\n"); + if (UNW_SP(info.regs)) + stack = (void *)UNW_SP(info.regs); + } else if (call_trace > 1) return; - printk("%sLegacy call trace:\n", log_lvl); + else + printk("Full inexact backtrace again:\n"); +#else + printk("Inexact backtrace:\n"); +#endif } } |