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279917e27e
linux/arch/parisc/kernel
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Helge Deller 279917e27e parisc: Fix backtrace to always include init funtion names 
I noticed that sometimes at kernel startup the backtraces did not
included the function names of init functions. Their address were not
resolved to function names and instead only the address was printed.

Debugging shows that the culprit is is_ksym_addr() which is called
by the backtrace functions to check if an address belongs to a function in
the kernel. The problem occurs only for CONFIG_KALLSYMS_ALL=y.

When looking at is_ksym_addr() one can see that for CONFIG_KALLSYMS_ALL=y
the function only tries to resolve the address via is_kernel() function,
which checks like this:
	if (addr >= _stext && addr <= _end)
                return 1;
On parisc the init functions are located before _stext, so this check fails.
Other platforms seem to have all functions (including init functions)
behind _stext.

The following patch moves the _stext symbol at the beginning of the
kernel and thus includes the init section. This fixes the check and does
not seem to have any negative side effects on where the kernel mapping
happens in the map_pages() function in arch/parisc/mm/init.c.

Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@kernel.org # 5.4+
2021-11-13 22:10:56 +01:00
..
syscalls compat: remove some compat entry points 2021-09-08 15:32:35 -07:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
alternative.c parisc: Refactor alternative code to accept multiple conditions 2020-04-05 22:50:40 +02:00
asm-offsets.c parisc: move CPU field back into thread_info 2021-11-04 11:21:47 +01:00
audit.c audit: add support for the openat2 syscall 2021-10-01 16:52:48 -04:00
cache.c parisc: deduplicate code in flush_cache_mm() and flush_cache_range() 2021-10-30 23:11:01 +02:00
compat_audit.c audit: add support for the openat2 syscall 2021-10-01 16:52:48 -04:00
drivers.c bus: Make remove callback return void 2021-07-21 11:53:42 +02:00
entry.S parisc: Move thread_info into task struct 2021-11-01 07:35:59 +01:00
firmware.c parisc/firmware: add functions to retrieve TOC data 2021-11-01 07:35:59 +01:00
ftrace.c Tracing updates for 5.16: 2021-11-01 20:05:19 -07:00
hardware.c parisc: hardware: Update references to parisc website 2020-06-01 23:02:39 +02:00
head.S parisc: Move thread_info into task struct 2021-11-01 07:35:59 +01:00
hpmc.S parisc: Fix IVT checksum calculation wrt HPMC 2021-02-12 16:31:42 +01:00
inventory.c parisc: Add qemu fw_cfg interface 2020-10-15 08:10:37 +02:00
irq.c parisc: Move thread_info into task struct 2021-11-01 07:35:59 +01:00
jump_label.c parisc: Add static branch and JUMP_LABEL feature 2019-05-06 00:10:03 +02:00
kexec_file.c parisc: add support for kexec_file_load() syscall 2019-09-08 15:41:46 +02:00
kexec.c parisc: add support for kexec_file_load() syscall 2019-09-08 15:41:46 +02:00
kgdb.c maccess: rename probe_kernel_{read,write} to copy_{from,to}_kernel_nofault 2020-06-17 10:57:41 -07:00
kprobes.c kprobes: treewide: Make it harder to refer kretprobe_trampoline directly 2021-09-30 21:24:06 -04:00
Makefile parisc: add support for TOC (transfer of control) 2021-11-01 07:35:59 +01:00
module.c mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
pa7300lc.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pacache.S mm: reorder includes after introduction of linux/pgtable.h 2020-06-09 09:39:13 -07:00
parisc_ksyms.c parisc: Drop strnlen_user() in favour of generic version 2021-09-09 12:44:30 +02:00
patch.c parisc: add spinlock to patch function 2019-06-08 12:56:26 +02:00
pci-dma.c parisc: pci-dma: fix warning unused-function 2020-12-15 05:41:11 +01:00
pci.c parisc: Drop comments which are already in pci.h 2019-09-05 16:41:11 +02:00
pdc_chassis.c kernel.h: split out panic and oops helpers 2021-07-01 11:06:04 -07:00
pdc_cons.c tty: pdc_cons, free tty_driver upon failure 2021-07-27 12:17:21 +02:00
pdt.c parisc: Make use of the helper macro kthread_run() 2021-11-01 07:36:01 +01:00
perf_asm.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
perf_images.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
perf.c parisc/perf: open access for CAP_PERFMON privileged process 2020-04-16 12:19:08 -03:00
process.c parisc architecture updates for kernel v5.16-rc1 2021-11-01 16:51:13 -07:00
processor.c parisc: Drop loops_per_jiffy from per_cpu struct 2020-11-11 14:57:30 +01:00
ptrace.c arch/parisc/kernel: remove duplicate include in ptrace 2021-03-04 09:12:29 +01:00
real2.S parisc: Fix and improve kernel stack unwinding 2018-08-13 09:54:17 +02:00
relocate_kernel.S parisc: add kexec syscall support 2019-09-08 15:37:04 +02:00
setup.c parisc: Mark sched_clock unstable only if clocks are not syncronized 2021-09-09 12:44:31 +02:00
signal32.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
signal32.h parisc: Reduce sigreturn trampoline to 3 instructions 2021-09-09 12:44:31 +02:00
signal.c parisc: Reduce sigreturn trampoline to 3 instructions 2021-09-09 12:44:31 +02:00
smp.c parisc: move CPU field back into thread_info 2021-11-04 11:21:47 +01:00
stacktrace.c parisc: Switch to ARCH_STACKWALK implementation 2021-10-30 23:11:00 +02:00
sys_parisc32.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sys_parisc.c parisc: enhance warning regarding usage of O_NONBLOCK 2021-11-01 07:36:00 +01:00
syscall.S parisc: Don't disable interrupts in cmpxchg and futex operations 2021-11-04 11:21:20 +01:00
time.c parisc: Mark sched_clock unstable only if clocks are not syncronized 2021-09-09 12:44:31 +02:00
toc_asm.S parisc: add support for TOC (transfer of control) 2021-11-01 07:35:59 +01:00
toc.c parisc: add support for TOC (transfer of control) 2021-11-01 07:35:59 +01:00
topology.c parisc: Add CPU topology support 2017-11-17 15:27:22 +01:00
traps.c parisc: don't enable irqs unconditionally in handle_interruption() 2021-11-04 11:21:20 +01:00
unaligned.c Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2019-07-08 21:48:15 -07:00
unwind.c parisc: Move thread_info into task struct 2021-11-01 07:35:59 +01:00
vmlinux.lds.S parisc: Fix backtrace to always include init funtion names 2021-11-13 22:10:56 +01:00