linux-stable/kernel
John Ogness 5b71a921db panic: Flush kernel log buffer at the end
[ Upstream commit d988d9a9b9 ]

If the kernel crashes in a context where printk() calls always
defer printing (such as in NMI or inside a printk_safe section)
then the final panic messages will be deferred to irq_work. But
if irq_work is not available, the messages will not get printed
unless explicitly flushed. The result is that the final
"end Kernel panic" banner does not get printed.

Add one final flush after the last printk() call to make sure
the final panic messages make it out as well.

Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20240207134103.1357162-14-john.ogness@linutronix.de
Signed-off-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-04-13 12:59:40 +02:00
..
bpf bpf: Protect against int overflow for stack access size 2024-04-13 12:59:16 +02:00
cgroup cgroup: Remove duplicates in cgroup v1 tasks file 2023-10-25 11:54:16 +02:00
configs
debug kdb: Fix a potential buffer overflow in kdb_local() 2024-01-25 14:37:56 -08:00
dma dma-mapping: clear dev->dma_mem to NULL after freeing it 2024-01-25 14:37:45 -08:00
entry entry/kvm: Exit to user mode when TIF_NOTIFY_SIGNAL is set 2023-01-04 11:39:22 +01:00
events perf/core: Fix reentry problem in perf_output_read_group() 2024-04-13 12:59:00 +02:00
futex futex: Don't include process MM in futex key on no-MMU 2023-11-20 11:06:44 +01:00
gcov gcov: add support for checksum field 2023-01-14 10:16:24 +01:00
irq genirq/generic_chip: Make irq_remove_generic_chip() irqdomain aware 2023-11-28 16:54:58 +00:00
kcsan kcsan: Don't expect 64 bits atomic builtins from 32 bits architectures 2023-07-27 08:43:57 +02:00
livepatch livepatch: Fix missing newline character in klp_resolve_symbols() 2023-11-20 11:06:52 +01:00
locking lockdep: Fix block chain corruption 2023-12-08 08:46:09 +01:00
power PM: suspend: Set mem_sleep_current during kernel command line setup 2024-04-13 12:58:13 +02:00
printk printk: Update @console_may_schedule in console_trylock_spinning() 2024-04-13 12:58:54 +02:00
rcu rcu-tasks: Provide rcu_trace_implies_rcu_gp() 2024-03-26 18:21:45 -04:00
sched sched/rt: Disallow writing invalid values to sched_rt_period_us 2024-03-01 13:16:43 +01:00
time timers: Rename del_timer_sync() to timer_delete_sync() 2024-04-13 12:57:58 +02:00
trace ring-buffer: Fix full_waiters_pending in poll 2024-04-13 12:58:34 +02:00
.gitignore kbuild: update config_data.gz only when the content of .config is changed 2021-05-11 14:47:37 +02:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
Makefile futex: Move to kernel/futex/ 2023-01-14 10:15:20 +01:00
acct.c acct: fix potential integer overflow in encode_comp_t() 2023-01-14 10:16:14 +01:00
async.c async: Introduce async_schedule_dev_nocall() 2024-02-23 08:41:53 +01:00
audit.c audit: Send netlink ACK before setting connection in auditd_set 2024-02-23 08:42:03 +01:00
audit.h audit: log AUDIT_TIME_* records only from rules 2022-04-08 14:40:00 +02:00
audit_fsnotify.c audit: fix potential double free on error path from fsnotify_add_inode_mark 2022-08-31 17:15:13 +02:00
audit_tree.c audit: move put_tree() to avoid trim_trees refcount underflow and UAF 2021-09-03 10:09:31 +02:00
audit_watch.c audit: don't WARN_ON_ONCE(!current->mm) in audit_exe_compare() 2023-11-28 16:54:56 +00:00
auditfilter.c
auditsc.c audit: fix possible soft lockup in __audit_inode_child() 2023-09-19 12:20:13 +02:00
backtracetest.c
bounds.c bounds: support non-power-of-two CONFIG_NR_CPUS 2024-04-13 12:58:08 +02:00
capability.c LSM: Signal to SafeSetID when setting group IDs 2020-10-13 09:17:34 -07:00
compat.c sched_getaffinity: don't assume 'cpumask_size()' is fully initialized 2023-04-05 11:23:45 +02:00
configs.c
context_tracking.c
cpu.c hrtimers: Push pending hrtimers away from outgoing CPU earlier 2023-12-13 18:26:56 +01:00
cpu_pm.c PM: cpu: Make notifier chain use a raw_spinlock_t 2021-09-15 09:50:40 +02:00
crash_core.c crash_core, vmcoreinfo: append 'SECTION_SIZE_BITS' to vmcoreinfo 2021-06-23 14:42:52 +02:00
crash_dump.c
cred.c cred: switch to using atomic_long_t 2023-12-20 15:44:30 +01:00
delayacct.c
dma.c
exec_domain.c
exit.c exit: Use READ_ONCE() for all oops/warn limit reads 2023-02-01 08:23:21 +01:00
extable.c
fail_function.c kernel/fail_function: fix memory leak with using debugfs_lookup() 2023-03-11 16:40:18 +01:00
fork.c kernel/fork: beware of __put_task_struct() calling context 2023-09-23 11:01:05 +02:00
freezer.c Revert "kernel: freezer should treat PF_IO_WORKER like PF_KTHREAD for freezing" 2021-04-07 15:00:14 +02:00
gen_kheaders.sh
groups.c LSM: Signal to SafeSetID when setting group IDs 2020-10-13 09:17:34 -07:00
hung_task.c kernel/hung_task.c: make type annotations consistent 2020-11-02 12:14:19 -08:00
iomem.c
irq_work.c
jump_label.c jump_label: Fix jump_label_text_reserved() vs __init 2021-07-20 16:05:58 +02:00
kallsyms.c treewide: Convert macro and uses of __section(foo) to __section("foo") 2020-10-25 14:51:49 -07:00
kcmp.c exec: Transform exec_update_mutex into a rw_semaphore 2021-01-09 13:46:24 +01:00
kcov.c
kexec.c panic, kexec: make __crash_kexec() NMI safe 2023-04-20 12:10:29 +02:00
kexec_core.c kexec: fix a memory leak in crash_shrink_memory() 2023-07-27 08:43:40 +02:00
kexec_elf.c
kexec_file.c kexec: support purgatories with .text.hot sections 2023-06-21 15:45:37 +02:00
kexec_internal.h panic, kexec: make __crash_kexec() NMI safe 2023-04-20 12:10:29 +02:00
kheaders.c kheaders: Use array declaration instead of char 2023-05-17 11:47:33 +02:00
kmod.c
kprobes.c kprobes: Fix to handle forcibly unoptimized kprobes on freeing_list 2024-01-25 14:37:51 -08:00
ksysfs.c kexec: turn all kexec_mutex acquisitions into trylocks 2023-04-20 12:10:29 +02:00
kthread.c kthread: Fix PF_KTHREAD vs to_kthread() race 2021-09-03 10:09:31 +02:00
latencytop.c
module-internal.h
module.c modules: only allow symbol_get of EXPORT_SYMBOL_GPL modules 2023-09-19 12:20:02 +02:00
module_signature.c module: harden ELF info handling 2021-03-25 09:04:11 +01:00
module_signing.c module: harden ELF info handling 2021-03-25 09:04:11 +01:00
notifier.c
nsproxy.c
padata.c crypto: pcrypt - Fix hungtask for PADATA_RESET 2023-11-28 16:54:51 +00:00
panic.c panic: Flush kernel log buffer at the end 2024-04-13 12:59:40 +02:00
params.c params: Replace zero-length array with flexible-array member 2020-10-29 17:22:59 -05:00
pid.c exec: Transform exec_update_mutex into a rw_semaphore 2021-01-09 13:46:24 +01:00
pid_namespace.c rcu-tasks: Fix synchronize_rcu_tasks() VS zap_pid_ns_processes() 2023-03-11 16:39:19 +01:00
profile.c profiling: fix shift too large makes kernel panic 2022-08-21 15:16:05 +02:00
ptrace.c ptrace: Reimplement PTRACE_KILL by always sending SIGKILL 2022-06-09 10:20:49 +02:00
range.c kernel.h: split out min()/max() et al. helpers 2020-10-16 11:11:19 -07:00
reboot.c kernel/reboot: emergency_restart: Set correct system_state 2023-11-28 16:54:58 +00:00
regset.c
relay.c relayfs: fix out-of-bounds access in relay_file_read 2023-05-17 11:47:34 +02:00
resource.c dax/kmem: Fix leak of memory-hotplug resources 2023-03-11 16:40:04 +01:00
rseq.c rseq: Remove broken uapi field layout on 32-bit little endian 2022-04-08 14:40:03 +02:00
scftorture.c scftorture: Forgive memory-allocation failure if KASAN 2023-09-23 11:01:05 +02:00
scs.c
seccomp.c seccomp: Invalidate seccomp mode to catch death failures 2024-03-01 13:16:46 +01:00
signal.c task_work: unconditionally run task_work from get_signal() 2023-01-04 11:39:23 +01:00
smp.c smp: Fix offline cpu check in flush_smp_call_function_queue() 2022-04-20 09:23:29 +02:00
smpboot.c sched/core: Initialize the idle task with preemption disabled 2021-07-14 16:55:50 +02:00
smpboot.h
softirq.c
stackleak.c gcc-plugins/stackleak: Use noinstr in favor of notrace 2022-02-23 12:01:00 +01:00
stacktrace.c
static_call.c static_call: Fix unused variable warn w/o MODULE 2021-09-08 08:49:00 +02:00
stop_machine.c stop_machine, rcu: Mark functions as notrace 2020-10-26 12:12:27 +01:00
sys.c getrusage: use sig->stats_lock rather than lock_task_sighand() 2024-03-15 10:48:22 -04:00
sys_ni.c kernel/sys_ni: add compat entry for fadvise64_64 2022-08-31 17:15:13 +02:00
sysctl-test.c
sysctl.c sched/rt: Disallow writing invalid values to sched_rt_period_us 2024-03-01 13:16:43 +01:00
task_work.c task_work: add helper for more targeted task_work canceling 2023-01-04 11:39:23 +01:00
taskstats.c taskstats: move specifying netlink policy back to ops 2020-10-02 19:11:12 -07:00
test_kprobes.c
torture.c torture: Fix hang during kthread shutdown phase 2023-08-30 16:23:17 +02:00
tracepoint.c tracepoint: Use rcu get state and cond sync for static call updates 2021-09-03 10:09:30 +02:00
tsacct.c taskstats: Cleanup the use of task->exit_code 2022-01-27 10:54:33 +01:00
ucount.c Revert "Add a reference to ucounts for each cred" 2021-09-08 08:49:00 +02:00
uid16.c
uid16.h
umh.c usermodehelper: reset umask to default before executing user process 2020-10-06 10:31:52 -07:00
up.c smp: Fix smp_call_function_single_async prototype 2021-05-14 09:50:46 +02:00
user-return-notifier.c
user.c
user_namespace.c Revert "Add a reference to ucounts for each cred" 2021-09-08 08:49:00 +02:00
usermode_driver.c bpf: Fix umd memory leak in copy_process() 2021-03-30 14:32:03 +02:00
utsname.c
utsname_sysctl.c
watch_queue.c watch_queue: fix IOC_WATCH_QUEUE_SET_SIZE alloc error paths 2023-03-17 08:45:13 +01:00
watchdog.c watchdog: move softlockup_panic back to early_param 2023-11-28 16:54:56 +00:00
watchdog_hld.c watchdog/perf: more properly prevent false positives with turbo modes 2023-07-27 08:43:40 +02:00
workqueue.c Revert "workqueue: remove unused cancel_work()" 2023-12-08 08:46:13 +01:00
workqueue_internal.h