Helge Deller 98400ad75e Revert "parisc: Fix backtrace to always include init funtion names" ... This reverts commit 279917e27e. With the CONFIG_HARDENED_USERCOPY option enabled, this patch triggers kernel bugs at runtime: usercopy: Kernel memory overwrite attempt detected to kernel text (offset 2084839, size 6)! kernel BUG at mm/usercopy.c:99! Backtrace: IAOQ[0]: usercopy_abort+0xc4/0xe8 [<00000000406ed1c8>] __check_object_size+0x174/0x238 [<00000000407086d4>] copy_strings.isra.0+0x3e8/0x708 [<0000000040709a20>] do_execveat_common.isra.0+0x1bc/0x328 [<000000004070b760>] compat_sys_execve+0x7c/0xb8 [<0000000040303eb8>] syscall_exit+0x0/0x14 The problem is, that we have an init section of at least 2MB size which starts at _stext and is freed after bootup. If then later some kernel data is (temporarily) stored in this free memory, check_kernel_text_object() will trigger a bug since the data appears to be inside the kernel text (>=_stext) area: if (overlaps(ptr, len, _stext, _etext)) usercopy_abort("kernel text"); Signed-off-by: Helge Deller <deller@gmx.de> Cc: stable@kernel.org # 5.4+		2021-11-22 07:37:31 +01:00
..
boot	parisc: decompressor: clean up Makefile	2021-11-01 07:36:01 +01:00
configs	parisc: Enable CONFIG_PRINTK_TIME=y in 32bit defconfig	2021-11-18 09:02:32 +01:00
include	parisc: Provide an extru_safe() macro to extract unsigned bits	2021-11-22 07:37:31 +01:00
kernel	Revert "parisc: Fix backtrace to always include init funtion names"	2021-11-22 07:37:31 +01:00
lib	parisc: mark xchg functions notrace	2021-11-01 07:36:00 +01:00
math-emu	parisc: math-emu: Fix fall-through warnings	2021-09-01 22:18:18 +02:00
mm	parisc: Fix set_fixmap() on PA1.x CPUs	2021-11-01 12:00:22 +01:00
defpalo.conf	parisc: switch to gzip-compressed vmlinuz kernel	2013-07-09 22:09:20 +02:00
install.sh	parisc: Install vmlinuz instead of zImage file	2020-10-15 08:10:39 +02:00
Kbuild	kbuild: use more subdir- for visiting subdirectories while cleaning	2021-10-24 13:49:46 +09:00
Kconfig	parisc: Move thread_info into task struct	2021-11-01 07:35:59 +01:00
Kconfig.debug	tracing: Refactor TRACE_IRQFLAGS_SUPPORT in Kconfig	2021-08-16 11:37:21 -04:00
Makefile	kbuild: use more subdir- for visiting subdirectories while cleaning	2021-10-24 13:49:46 +09:00
nm