Douglas Anderson ff57070df0 kgdb: Prevent infinite recursive entries to the debugger ...

[ Upstream commit 3ca676e4ca ]

If we detect that we recursively entered the debugger we should hack
our I/O ops to NULL so that the panic() in the next line won't
actually cause another recursion into the debugger.  The first line of
kgdb_panic() will check this and return.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Link: https://lore.kernel.org/r/20200507130644.v4.6.I89de39f68736c9de610e6f241e68d8dbc44bc266@changeid
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2020-06-20 10:25:08 +02:00

..

bpf

bpf: Explicitly memset some bpf info structures declared on the stack

2020-04-02 16:34:37 +02:00

cgroup

cgroup1: don't call release_agent when it is ""

2020-04-02 16:34:27 +02:00

configs

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debug

kgdb: Prevent infinite recursive entries to the debugger

2020-06-20 10:25:08 +02:00

events

perf: Add cond_resched() to task_function_call()

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

gcov

kernel/gcov/fs.c: gcov_seq_next() should increase position index

2020-05-02 17:24:14 +02:00

irq

genirq/generic_pending: Do not lose pending affinity update

2020-06-03 08:18:12 +02:00

livepatch

livepatch: Nullify obj->mod in klp_module_coming()'s error path

2019-10-07 18:55:09 +02:00

locking

locktorture: Print ratio of acquisitions, not failures

2020-04-24 08:01:23 +02:00

power

PM: hibernate: Freeze kernel threads in software_resume()

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

printk

printk: fix integer overflow in setup_log_buf()

2019-12-01 09:13:17 +01:00

rcu

rcuperf: Fix cleanup path for invalid perf_type strings

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

sched

sched/fair: Don't NUMA balance for kthreads

2020-06-20 10:24:59 +02:00

time

clocksource: Prevent double add_timer_on() for watchdog_timer

2020-02-14 16:32:20 -05:00

trace

Stop the ad-hoc games with -Wno-maybe-initialized

2020-05-20 08:17:10 +02:00

.gitignore

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acct.c

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async.c

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audit_fsnotify.c

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audit_tree.c

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audit_watch.c

audit_get_nd(): don't unlock parent too early

2019-12-17 20:37:27 +01:00

audit.c

audit: check the length of userspace generated audit records

2020-05-02 17:24:31 +02:00

audit.h

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auditfilter.c

audit: fix error handling in audit_data_to_entry()

2020-03-11 18:02:48 +01:00

auditsc.c

audit: print empty EXECVE args

2019-12-01 09:14:03 +01:00

backtracetest.c

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bounds.c

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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

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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

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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

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

2020-06-20 10:24:58 +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

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irq_work.c

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jump_label.c

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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

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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 optimize_kprobe()/unoptimize_kprobe() cancellation logic

2020-03-11 18:02:57 +01:00

ksysfs.c

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kthread.c

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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

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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: handle alloc_percpu returning NULL in relay_open

2020-06-11 09:22:58 +02:00

resource.c

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seccomp.c

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signal.c

signal: Extend exec_id to 64bits

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

smp.c

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smpboot.c

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smpboot.h

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softirq.c

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stacktrace.c

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stop_machine.c

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sys_ni.c

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sys.c

kernel/sys.c: prctl: fix false positive in validate_prctl_map()

2019-06-15 11:54:52 +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

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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

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user-return-notifier.c

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user.c

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utsname_sysctl.c

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utsname.c

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watchdog_hld.c

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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