linux-stable/kernel
Naveen N. Rao 6af88cc6e4 kexec_file: drop weak attribute from arch_kexec_apply_relocations[_add]
commit 3e35142ef9 upstream.

Since commit d1bcae833b32f1 ("ELF: Don't generate unused section
symbols") [1], binutils (v2.36+) started dropping section symbols that
it thought were unused.  This isn't an issue in general, but with
kexec_file.c, gcc is placing kexec_arch_apply_relocations[_add] into a
separate .text.unlikely section and the section symbol ".text.unlikely"
is being dropped. Due to this, recordmcount is unable to find a non-weak
symbol in .text.unlikely to generate a relocation record against.

Address this by dropping the weak attribute from these functions.
Instead, follow the existing pattern of having architectures #define the
name of the function they want to override in their headers.

[1] https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=d1bcae833b32f1

[akpm@linux-foundation.org: arch/s390/include/asm/kexec.h needs linux/module.h]
Link: https://lkml.kernel.org/r/20220519091237.676736-1-naveen.n.rao@linux.vnet.ibm.com
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-07-02 16:18:11 +02:00
..
bpf bpf: Add kconfig knob for disabling unpriv bpf by default 2022-02-16 12:44:50 +01:00
cgroup cgroup/cpuset: Remove cpus_allowed/mems_allowed setup in cpuset_init_smp() 2022-05-18 09:18:08 +02:00
configs
debug kdb: Make memory allocations more robust 2021-03-03 18:22:36 +01:00
events perf: Fix sys_perf_event_open() race against self 2022-05-25 08:41:19 +02:00
gcov gcov: add support for GCC 10.1 2020-09-23 10:46:32 +02:00
irq random: remove unused irq_flags argument from add_interrupt_randomness() 2022-06-25 11:46:30 +02:00
livepatch livepatch: Nullify obj->mod in klp_module_coming()'s error path 2019-10-07 18:55:09 +02:00
locking locking/lockdep: Avoid RCU-induced noinstr fail 2021-11-26 11:40:26 +01:00
power PM: suspend: fix return value of __setup handler 2022-04-20 09:08:13 +02:00
printk printk: fix return value of printk.devkmsg __setup handler 2022-04-20 09:08:15 +02:00
rcu rcu: Fix missed wakeup of exp_wq waiters 2021-09-26 13:37:28 +02:00
sched sched/debug: Remove mpol_get/put and task_lock/unlock from sched_show_numa 2022-04-20 09:08:13 +02:00
time timekeeping: Add raw clock fallback for random_get_entropy() 2022-06-25 11:46:38 +02:00
trace tracing: Avoid adding tracer option before update_tracer_options 2022-06-14 16:53:58 +02:00
.gitignore
acct.c kernel/acct.c: fix the acct->needcheck check in check_free_space() 2018-01-10 09:31:17 +01:00
async.c Revert "module, async: async_synchronize_full() on module init iff async is used" 2022-02-23 11:57:33 +01:00
audit.c audit: improve audit queue handling when "audit=1" on cmdline 2022-02-08 18:16:28 +01:00
audit.h audit: fix a net reference leak in audit_list_rules_send() 2020-06-20 10:25:10 +02:00
audit_fsnotify.c
audit_tree.c
audit_watch.c audit: CONFIG_CHANGE don't log internal bookkeeping as an event 2020-10-01 13:12:33 +02:00
auditfilter.c audit: fix a net reference leak in audit_list_rules_send() 2020-06-20 10:25:10 +02:00
auditsc.c audit: print empty EXECVE args 2019-12-01 09:14:03 +01:00
backtracetest.c
bounds.c kbuild: fix kernel/bounds.c 'W=1' warning 2018-11-13 11:15:08 -08:00
capability.c
compat.c make 'user_access_begin()' do 'access_ok()' 2020-06-20 10:24:58 +02:00
configs.c
context_tracking.c
cpu.c random: clear fast pool, crng, and batches in cpuhp bring up 2022-06-25 11:46:35 +02:00
cpu_pm.c kernel/cpu_pm: Fix uninitted local in cpu_pm 2020-06-20 10:25:19 +02:00
crash_core.c kdump: write correct address of mem_section into vmcoreinfo 2018-01-17 09:45:27 +01:00
crash_dump.c
cred.c memcg: account security cred as well to kmemcg 2020-01-09 10:17:54 +01:00
delayacct.c delayacct: Use raw_spinlocks 2018-08-03 07:50:38 +02:00
dma.c
exec_domain.c
exit.c don't dump the threads that had been already exiting when zapped. 2020-11-18 18:27:58 +01:00
extable.c
fork.c mm/hugetlb: initialize hugetlb_usage in mm_init 2021-09-22 11:45:32 +02:00
freezer.c
futex.c mm, futex: fix shared futex pgoff on shmem huge page 2021-07-11 12:48:12 +02:00
groups.c kernel: make groups_sort calling a responsibility group_info allocators 2017-12-20 10:10:18 +01:00
hung_task.c kernel: hung_task.c: disable on suspend 2019-04-20 09:15:05 +02:00
irq_work.c
jump_label.c sched/core: Fix cpu.max vs. cpuhotplug deadlock 2018-12-05 19:41:17 +01:00
kallsyms.c kallsyms: Don't let kallsyms_lookup_size_offset() fail on retrieving the first symbol 2019-09-21 07:15:38 +02:00
kcmp.c
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kcov.c kcov: ensure irq code sees a valid area 2018-08-03 07:50:22 +02:00
kexec.c
kexec_core.c kexec: Allocate decrypted control pages for kdump if SME is enabled 2019-11-24 08:23:15 +01:00
kexec_file.c kexec_file: drop weak attribute from arch_kexec_apply_relocations[_add] 2022-07-02 16:18:11 +02:00
kexec_internal.h
kmod.c kmod: make request_module() return an error when autoloading is disabled 2020-04-24 08:00:44 +02:00
kprobes.c kprobes: Limit max data_size of the kretprobe instances 2021-12-08 08:46:54 +01:00
ksysfs.c
kthread.c kthread: prevent deadlock when kthread_mod_delayed_work() races with kthread_cancel_delayed_work_sync() 2021-07-11 12:48:13 +02:00
latencytop.c
Makefile elfcore: fix building with clang 2021-02-10 09:12:08 +01:00
memremap.c mm, devm_memremap_pages: kill mapping "System RAM" support 2019-01-13 10:01:02 +01:00
module-internal.h
module.c Revert "module, async: async_synchronize_full() on module init iff async is used" 2022-02-23 11:57:33 +01:00
module_signing.c
notifier.c x86/mm: split vmalloc_sync_all() 2020-04-02 16:34:20 +02:00
nsproxy.c
padata.c padata: purge get_cpu and reorder_via_wq from padata_do_serial 2020-05-27 16:43:05 +02:00
panic.c panic: ensure preemption is disabled during panic() 2019-10-17 13:43:19 -07:00
params.c
pid.c
pid_namespace.c memcg: enable accounting for pids in nested pid namespaces 2021-09-22 11:45:32 +02:00
profile.c profiling: fix shift-out-of-bounds bugs 2021-09-26 13:37:28 +02:00
ptrace.c ptrace: Reimplement PTRACE_KILL by always sending SIGKILL 2022-06-14 16:53:43 +02:00
range.c
reboot.c reboot: fix overflow parsing reboot cpu number 2020-11-18 18:28:02 +01:00
relay.c kernel/relay.c: fix memleak on destroy relay channel 2020-08-26 10:29:54 +02:00
resource.c resource: fix integer overflow at reallocation 2018-04-24 09:36:22 +02:00
seccomp.c seccomp: Invalidate seccomp mode to catch death failures 2022-02-16 12:44:52 +01:00
signal.c signal: Remove the bogus sigkill_pending in ptrace_stop 2021-11-26 11:40:24 +01:00
smp.c smp: Fix offline cpu check in flush_smp_call_function_queue() 2022-04-20 09:08:33 +02:00
smpboot.c kthread: Extract KTHREAD_IS_PER_CPU 2021-02-07 14:47:41 +01:00
smpboot.h
softirq.c Mark HI and TASKLET softirq synchronous 2018-08-15 18:12:47 +02:00
stacktrace.c
stop_machine.c stop_machine: Atomically queue and wake stopper threads 2018-09-05 09:26:36 +02:00
sys.c prctl: allow to setup brk for et_dyn executables 2021-09-26 13:37:28 +02:00
sys_ni.c
sysctl.c x86/speculation: Include unprivileged eBPF status in Spectre v2 mitigation reporting 2022-03-11 10:13:28 +01:00
sysctl_binary.c
task_work.c locking/barriers: Convert users of lockless_dereference() to READ_ONCE() 2017-12-25 14:26:21 +01:00
taskstats.c taskstats: fix data-race 2020-01-09 10:17:53 +01:00
test_kprobes.c
torture.c
tracepoint.c tracepoint: Do not fail unregistering a probe due to memory failure 2021-03-03 18:22:47 +01:00
tsacct.c taskstats: Cleanup the use of task->exit_code 2022-02-23 11:57:34 +01:00
ucount.c
uid16.c kernel: make groups_sort calling a responsibility group_info allocators 2017-12-20 10:10:18 +01:00
umh.c usermodehelper: reset umask to default before executing user process 2020-10-14 09:51:10 +02:00
up.c smp: Fix smp_call_function_single_async prototype 2021-05-22 10:57:35 +02:00
user-return-notifier.c
user.c
user_namespace.c userns: move user access out of the mutex 2018-09-09 19:56:00 +02:00
utsname.c
utsname_sysctl.c sys: don't hold uts_sem while accessing userspace memory 2018-09-09 19:56:00 +02:00
watchdog.c watchdog/softlockup: Enforce that timestamp is valid on boot 2020-02-28 16:36:05 +01:00
watchdog_hld.c watchdog: Mark watchdog touch functions as notrace 2018-09-05 09:26:42 +02:00
workqueue.c workqueue: fix UAF in pwq_unbound_release_workfn() 2021-08-04 12:22:14 +02:00
workqueue_internal.h