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He Zhe 695583334b printk: Give error on attempt to set log buffer length to over 2G 
[ Upstream commit e6fe3e5b7d ]

The current printk() is ready to handle log buffer size up to 2G.
Give an explicit error for users who want to use larger log buffer.

Also fix printk formatting to show the 2G as a positive number.

Link: http://lkml.kernel.org/r/20181008135916.gg4kkmoki5bgtco5@pathway.suse.cz
Cc: rostedt@goodmis.org
Cc: linux-kernel@vger.kernel.org
Suggested-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: He Zhe <zhe.he@windriver.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
[pmladek: Fixed to the really safe limit 2GB.]
Signed-off-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2019-11-24 08:23:25 +01:00
..
bpf
bpf: fix use after free in prog symbol exposure
2019-10-07 18:55:15 +02:00
cgroup
cgroup: Fix css_task_iter_advance_css_set() cset skip condition
2019-08-09 17:53:37 +02:00
configs
…
debug
kdb: Don't back trace on a cpu that didn't round up
2019-02-12 19:46:09 +01:00
events
signal: Properly deliver SIGILL from uprobes
2019-11-20 17:59:52 +01:00
gcov
…
irq
genirq: Prevent NULL pointer dereference in resend_irqs()
2019-09-19 09:08:04 +02:00
livepatch
livepatch: Nullify obj->mod in klp_module_coming()'s error path
2019-10-07 18:55:09 +02:00
locking
Revert "locking/pvqspinlock: Don't wait if vCPU is preempted"
2019-10-11 18:18:36 +02:00
power
x86/power: Fix 'nosmt' vs hibernation triple fault during resume
2019-06-11 12:21:48 +02:00
printk
printk: Give error on attempt to set log buffer length to over 2G
2019-11-24 08:23:25 +01:00
rcu
rcuperf: Fix cleanup path for invalid perf_type strings
2019-05-31 06:47:33 -07:00
sched
sched/fair: Fix -Wunused-but-set-variable warnings
2019-11-12 19:18:29 +01:00
time
tick: broadcast-hrtimer: Fix a race in bc_set_next
2019-10-11 18:18:46 +02:00
trace
tracing: Initialize iter->seq after zeroing in tracing_read_pipe()
2019-11-06 12:43:20 +01:00
.gitignore
…
acct.c
…
async.c
…
audit_fsnotify.c
…
audit_tree.c
…
audit_watch.c
audit: fix use-after-free in audit_add_watch
2018-09-26 08:38:09 +02:00
audit.c
…
audit.h
…
auditfilter.c
audit: fix a memory leak bug
2019-05-31 06:47:25 -07:00
auditsc.c
audit: fix potential null dereference 'context->module.name'
2018-08-06 16:20:49 +02:00
backtracetest.c
…
bounds.c
kbuild: fix kernel/bounds.c 'W=1' warning
2018-11-13 11:15:08 -08:00
capability.c
…
compat.c
…
configs.c
…
context_tracking.c
…
cpu_pm.c
…
cpu.c
cpu/SMT: State SMT is disabled even with nosmt and without "=force"
2019-11-24 08:23:08 +01:00
crash_core.c
…
crash_dump.c
…
cred.c
access: avoid the RCU grace period for the temporary subjective credentials
2019-07-31 07:28:58 +02:00
delayacct.c
delayacct: Use raw_spinlocks
2018-08-03 07:50:38 +02:00
dma.c
…
elfcore.c
kernel/elfcore.c: include proper prototypes
2019-10-11 18:18:42 +02:00
exec_domain.c
…
exit.c
cgroup: Call cgroup_release() before __exit_signal()
2019-08-09 17:53:36 +02:00
extable.c
…
fork.c
kernel/sysctl.c: do not override max_threads provided by userspace
2019-10-17 13:43:45 -07:00
freezer.c
…
futex_compat.c
…
futex.c
locking/futex: Allow low-level atomic operations to return -EAGAIN
2019-05-10 17:53:15 +02:00
groups.c
…
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_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_internal.h
…
kexec.c
…
kmod.c
…
kprobes.c
kprobes: Don't call BUG_ON() if there is a kprobe in use on free list
2019-11-20 17:59:56 +01:00
ksysfs.c
…
kthread.c
kthread, tracing: Don't expose half-written comm when creating kthreads
2018-08-03 07:50:21 +02:00
latencytop.c
…
Makefile
x86/uaccess, kcov: Disable stack protector
2019-06-19 08:20:56 +02:00
memremap.c
mm, devm_memremap_pages: kill mapping "System RAM" support
2019-01-13 10:01:02 +01:00
module_signing.c
…
module-internal.h
…
module.c
kernel/module: Fix mem leak in module_add_modinfo_attrs
2019-09-16 08:20:46 +02:00
notifier.c
…
nsproxy.c
…
padata.c
padata: use smp_mb in padata_reorder to avoid orphaned padata jobs
2019-07-31 07:28:39 +02:00
panic.c
panic: ensure preemption is disabled during panic()
2019-10-17 13:43:19 -07:00
params.c
…
pid_namespace.c
signal/pid_namespace: Fix reboot_pid_ns to use send_sig not force_sig
2019-07-31 07:28:21 +02:00
pid.c
…
profile.c
…
ptrace.c
ptrace: Fix ->ptracer_cred handling for PTRACE_TRACEME
2019-07-10 09:54:38 +02:00
range.c
…
reboot.c
…
relay.c
relay: check return of create_buf_file() properly
2019-03-13 14:03:20 -07:00
resource.c
…
seccomp.c
…
signal.c
signal: Always ignore SIGKILL and SIGSTOP sent to the global init
2019-11-20 17:59:52 +01:00
smp.c
cpu/hotplug: Fix "SMT disabled by BIOS" detection for KVM
2019-02-12 19:46:13 +01:00
smpboot.c
…
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_ni.c
…
sys.c
kernel/sys.c: prctl: fix false positive in validate_prctl_map()
2019-06-15 11:54:52 +02:00
sysctl_binary.c
…
sysctl.c
sysctl: return -EINVAL if val violates minmax
2019-06-15 11:54:51 +02:00
task_work.c
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taskstats.c
…
test_kprobes.c
…
torture.c
…
tracepoint.c
…
tsacct.c
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ucount.c
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uid16.c
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umh.c
…
up.c
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user_namespace.c
userns: move user access out of the mutex
2018-09-09 19:56:00 +02:00
user-return-notifier.c
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user.c
…
utsname_sysctl.c
sys: don't hold uts_sem while accessing userspace memory
2018-09-09 19:56:00 +02:00
utsname.c
…
watchdog_hld.c
watchdog: Mark watchdog touch functions as notrace
2018-09-05 09:26:42 +02:00
watchdog.c
watchdog: Mark watchdog touch functions as notrace
2018-09-05 09:26:42 +02:00
workqueue_internal.h
…
workqueue.c
watchdog: Mark watchdog touch functions as notrace
2018-09-05 09:26:42 +02:00