linux/arch/i386
Ingo Molnar b88d4f1d39 [PATCH] i386: break out of recursion in stackframe walk
If CONFIG_FRAME_POINTERS is enabled, and one does a dump_stack() during
early SMP init, an infinite stackdump and a bootup hang happens:

 [<c0104e7f>] show_trace+0xd/0xf
 [<c0104e96>] dump_stack+0x15/0x17
 [<c01440df>] save_trace+0xc3/0xce
 [<c014527d>] mark_lock+0x8c/0x4fe
 [<c0145df5>] __lockdep_acquire+0x44e/0xaa5
 [<c0146798>] lockdep_acquire+0x68/0x84
 [<c1048699>] _spin_lock+0x21/0x2f
 [<c010d918>] prepare_set+0xd/0x5d
 [<c010daa8>] generic_set_all+0x1d/0x201
 [<c010ca9a>] mtrr_ap_init+0x23/0x3b
 [<c010ada8>] identify_cpu+0x2a7/0x2af
 [<c01192a7>] smp_store_cpu_info+0x2f/0xb4
 [<c01197d0>] start_secondary+0xb5/0x3ec
 [<c104ec11>] end_of_stack_stop_unwind_function+0x1/0x4
 [<c104ec11>] end_of_stack_stop_unwind_function+0x1/0x4
 [<c104ec11>] end_of_stack_stop_unwind_function+0x1/0x4
 [<c104ec11>] end_of_stack_stop_unwind_function+0x1/0x4
 [<c104ec11>] end_of_stack_stop_unwind_function+0x1/0x4
 [<c104ec11>] end_of_stack_stop_unwind_function+0x1/0x4
 [<c104ec11>] end_of_stack_stop_unwind_function+0x1/0x4
 [<c104ec11>] end_of_stack_stop_unwind_function+0x1/0x4
 [...]

Due to "end_of_stack_stop_unwind_function" recursing back to itself in the
EBP stackframe-walker.  So avoid this type of recursion when walking the
stack .

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-23 07:42:56 -07:00
..
boot [PATCH] vesafb: Fix incorrect logo colors in x86_64 2006-04-11 06:18:54 -07:00
crypto
kernel [PATCH] i386: break out of recursion in stackframe walk 2006-06-23 07:42:56 -07:00
lib [PATCH] x86: cache pollution aware __copy_from_user_ll() 2006-06-23 07:42:56 -07:00
mach-default
mach-es7000
mach-generic [PATCH] i386: apic= command line option should always be 2006-05-30 20:31:05 -07:00
mach-visws
mach-voyager [PATCH] voyager: no need to define BITS_PER_BYTE when it's already in types.h 2006-04-19 09:13:51 -07:00
math-emu
mm [PATCH] build fix: CONFIG_MEMORY_HOTPLUG=y on i386 2006-05-21 12:59:17 -07:00
oprofile [PATCH] Add Core Solo and Core Duo support to oprofile 2006-05-15 11:20:56 -07:00
pci [PATCH] PCI: fix issues with extended conf space when MMCONFIG disabled because of e820 2006-06-21 12:00:01 -07:00
power [PATCH] Don't trigger full rebuild via CONFIG_MTRR 2006-06-23 07:42:56 -07:00
defconfig
Kconfig [PATCH] Unify pxm_to_node() and node_to_pxm() 2006-06-23 07:42:48 -07:00
Kconfig.cpu [PATCH] Enable TSC for AMD Geode GX/LX 2006-04-11 06:18:34 -07:00
Kconfig.debug [PATCH] i386: Move CONFIG_DOUBLEFAULT into arch/i386 where it belongs. 2006-04-18 10:39:20 -07:00
Makefile
Makefile.cpu