Shreyas Joshi 27d1856973 printk: handle blank console arguments passed in. ...

[ Upstream commit 48021f9813 ]

If uboot passes a blank string to console_setup then it results in
a trashed memory. Ultimately, the kernel crashes during freeing up
the memory.

This fix checks if there is a blank parameter being
passed to console_setup from uboot. In case it detects that
the console parameter is blank then it doesn't setup the serial
device and it gracefully exits.

Link: https://lore.kernel.org/r/20200522065306.83-1-shreyas.joshi@biamp.com
Signed-off-by: Shreyas Joshi <shreyas.joshi@biamp.com>
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
[pmladek@suse.com: Better format the commit message and code, remove unnecessary brackets.]
Signed-off-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2020-10-01 13:12:45 +02:00

..

bpf

bpf: Remove recursion prevention from rcu free callback

2020-10-01 13:12:35 +02:00

cgroup

cgroup: add missing skcd->no_refcnt check in cgroup_sk_clone()

2020-08-21 09:48:02 +02:00

configs

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debug

kgdb: Avoid suspicious RCU usage warning

2020-07-09 09:36:30 +02:00

events

uprobes: Change handle_swbp() to send SIGTRAP with si_code=SI_KERNEL, to fix GDB regression

2020-07-29 07:42:52 +02:00

gcov

gcov: add support for GCC 10.1

2020-09-23 10:46:32 +02:00

irq

genirq/affinity: Make affinity setting if activated opt-in

2020-08-21 09:48:23 +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: Fix overflow in presentation of average lock-time

2020-09-03 11:22:27 +02:00

power

PM: hibernate: Freeze kernel threads in software_resume()

2020-05-05 19:15:50 +02:00

printk

printk: handle blank console arguments passed in.

2020-10-01 13:12:45 +02:00

rcu

rcuperf: Fix cleanup path for invalid perf_type strings

2019-05-31 06:47:33 -07:00

sched

sched: correct SD_flags returned by tl->sd_flags()

2020-08-21 09:48:02 +02:00

time

timekeeping: Prevent 32bit truncation in scale64_check_overflow()

2020-10-01 13:12:36 +02:00

trace

tracing: Use address-of operator on section symbols

2020-10-01 13:12:38 +02:00

.gitignore

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acct.c

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async.c

kernel/async.c: revert "async: simplify lowest_in_progress()"

2018-02-16 20:23:05 +01:00

audit_fsnotify.c

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audit_tree.c

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audit_watch.c

audit: CONFIG_CHANGE don't log internal bookkeeping as an event

2020-10-01 13:12:33 +02:00

audit.c

audit: fix a net reference leak in audit_list_rules_send()

2020-06-20 10:25:10 +02:00

audit.h

audit: fix a net reference leak in audit_list_rules_send()

2020-06-20 10:25:10 +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

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bounds.c

kbuild: fix kernel/bounds.c 'W=1' warning

2018-11-13 11:15:08 -08:00

capability.c

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compat.c

make 'user_access_begin()' do 'access_ok()'

2020-06-20 10:24:58 +02:00

configs.c

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context_tracking.c

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cpu_pm.c

kernel/cpu_pm: Fix uninitted local in cpu_pm

2020-06-20 10:25:19 +02:00

cpu.c

x86/speculation: Remove redundant arch_smt_update() invocation

2020-04-24 08:00:41 +02:00

crash_core.c

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crash_dump.c

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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

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elfcore.c

kernel/elfcore.c: include proper prototypes

2019-10-11 18:18:42 +02:00

exec_domain.c

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exit.c

exit: Move preemption fixup up, move blocking operations down

2020-06-20 10:25:10 +02:00

extable.c

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fork.c

futex: Split futex_mm_release() for exit/exec

2019-12-05 15:38:26 +01:00

freezer.c

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futex.c

futex: Unbreak futex hashing

2020-04-02 16:34:21 +02:00

groups.c

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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

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Kconfig.freezer

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Kconfig.hz

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Kconfig.locks

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Kconfig.preempt

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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

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kexec_internal.h

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kexec.c

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kmod.c

kmod: make request_module() return an error when autoloading is disabled

2020-04-24 08:00:44 +02:00

kprobes.c

kprobes: fix kill kprobe which has been marked as gone

2020-10-01 13:12:23 +02:00

ksysfs.c

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kthread.c

kthread, tracing: Don't expose half-written comm when creating kthreads

2018-08-03 07:50:21 +02:00

latencytop.c

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Makefile

y2038: futex: Move compat implementation into futex.c

2019-12-05 15:38:22 +01:00

memremap.c

mm, devm_memremap_pages: kill mapping "System RAM" support

2019-01-13 10:01:02 +01:00

module_signing.c

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module-internal.h

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module.c

kernel/module: Fix memleak in module_add_modinfo_attrs()

2020-02-14 16:32:06 -05:00

notifier.c

x86/mm: split vmalloc_sync_all()

2020-04-02 16:34:20 +02:00

nsproxy.c

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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

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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

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profile.c

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ptrace.c

ptrace: reintroduce usage of subjective credentials in ptrace_has_cap()

2020-01-23 08:20:32 +01:00

range.c

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reboot.c

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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: Move speculation migitation control to arch code

2018-05-22 18:54:04 +02:00

signal.c

signal: Extend exec_id to 64bits

2020-04-24 08:00:38 +02:00

smp.c

cpu/hotplug: Fix "SMT disabled by BIOS" detection for KVM

2019-02-12 19:46:13 +01:00

smpboot.c

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smpboot.h

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softirq.c

Mark HI and TASKLET softirq synchronous

2018-08-15 18:12:47 +02:00

stacktrace.c

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stop_machine.c

stop_machine: Atomically queue and wake stopper threads

2018-09-05 09:26:36 +02:00

sys_ni.c

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sys.c

kernel/sys.c: avoid copying possible padding bytes in copy_to_user

2020-10-01 13:12:30 +02:00

sysctl_binary.c

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sysctl.c

kernel: sysctl: make drop_caches write-only

2020-01-04 13:59:57 +01:00

task_work.c

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taskstats.c

taskstats: fix data-race

2020-01-09 10:17:53 +01:00

test_kprobes.c

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torture.c

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tracepoint.c

tracepoint: Do not warn on ENOMEM

2018-05-09 09:51:50 +02:00

tsacct.c

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ucount.c

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uid16.c

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umh.c

coredump: fix crash when umh is disabled

2020-05-20 08:16:58 +02:00

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

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utsname_sysctl.c

sys: don't hold uts_sem while accessing userspace memory

2018-09-09 19:56:00 +02:00

utsname.c

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watchdog_hld.c

watchdog: Mark watchdog touch functions as notrace

2018-09-05 09:26:42 +02:00

watchdog.c

watchdog/softlockup: Enforce that timestamp is valid on boot

2020-02-28 16:36:05 +01:00

workqueue_internal.h

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workqueue.c

workqueue: don't use wq_select_unbound_cpu() for bound works

2020-03-20 10:54:16 +01:00