From 33ab1979bc9f719213bc3f392c8fd9d012e4f4e9 Mon Sep 17 00:00:00 2001 From: Jason Wessel <jason.wessel@windriver.com> Date: Wed, 11 Feb 2009 18:46:32 -0600 Subject: [PATCH] kgdb,i386: use address that SP register points to in the exception frame The treatment of the SP register is different on x86_64 and i386. This is a regression fix that lived outside the mainline kernel from 2.6.27 to now. The regression was a result of the original merge consolidation of the i386 and x86_64 archs to x86. The incorrectly reported SP on i386 prevented stack tracebacks from working correctly in gdb. Signed-off-by: Jason Wessel <jason.wessel@windriver.com> --- arch/x86/kernel/kgdb.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c index eedfaebe1063d..b1f4dffb919e8 100644 --- a/arch/x86/kernel/kgdb.c +++ b/arch/x86/kernel/kgdb.c @@ -88,6 +88,7 @@ void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs) gdb_regs[GDB_SS] = __KERNEL_DS; gdb_regs[GDB_FS] = 0xFFFF; gdb_regs[GDB_GS] = 0xFFFF; + gdb_regs[GDB_SP] = (int)®s->sp; #else gdb_regs[GDB_R8] = regs->r8; gdb_regs[GDB_R9] = regs->r9; @@ -100,8 +101,8 @@ void pt_regs_to_gdb_regs(unsigned long *gdb_regs, struct pt_regs *regs) gdb_regs32[GDB_PS] = regs->flags; gdb_regs32[GDB_CS] = regs->cs; gdb_regs32[GDB_SS] = regs->ss; -#endif gdb_regs[GDB_SP] = regs->sp; +#endif } /** -- 2.30.2