Douglas Anderson
b6f50bfa77
kgdb: Disable WARN_CONSOLE_UNLOCKED for all kgdb ...
[ Upstream commit 202164fbfa2b2ffa3e66b504e0f126ba9a745006 ]
In commit 81eaadcae81b ("kgdboc: disable the console lock when in
kgdb") we avoided the WARN_CONSOLE_UNLOCKED() yell when we were in
kgdboc. That still works fine, but it turns out that we get a similar
yell when using other I/O drivers. One example is the "I/O driver"
for the kgdb test suite (kgdbts). When I enabled that I again got the
same yells.
Even though "kgdbts" doesn't actually interact with the user over the
console, using it still causes kgdb to print to the consoles. That
trips the same warning:
con_is_visible+0x60/0x68
con_scroll+0x110/0x1b8
lf+0x4c/0xc8
vt_console_print+0x1b8/0x348
vkdb_printf+0x320/0x89c
kdb_printf+0x68/0x90
kdb_main_loop+0x190/0x860
kdb_stub+0x2cc/0x3ec
kgdb_cpu_enter+0x268/0x744
kgdb_handle_exception+0x1a4/0x200
kgdb_compiled_brk_fn+0x34/0x44
brk_handler+0x7c/0xb8
do_debug_exception+0x1b4/0x228
Let's increment/decrement the "ignore_console_lock_warning" variable
all the time when we enter the debugger.
This will allow us to later revert commit 81eaadcae81b ("kgdboc:
disable the console lock when in kgdb").
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Link: https://lore.kernel.org/r/20200507130644.v4.1.Ied2b058357152ebcc8bf68edd6f20a11d98d7d4e@changeid
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-06-22 09:05:11 +02:00
cpumap: Avoid warning when CONFIG_DEBUG_PER_CPU_MAPS is enabled
2020-05-02 17:25:53 +02:00
Revert "cgroup: Add memory barriers to plug cgroup_rstat_updated() race window"
2020-06-07 13:17:53 +02:00
kconfig: tinyconfig: remove stale stack protector fixups
2018-06-15 07:15:28 +09:00
kgdb: Disable WARN_CONSOLE_UNLOCKED for all kgdb
2020-06-22 09:05:11 +02:00
dma-debug: add a schedule point in debug_dma_dump_mappings()
2020-01-04 19:12:43 +01:00
perf: Add cond_resched() to task_function_call()
2020-06-22 09:05:08 +02:00
kernel/gcov/fs.c: gcov_seq_next() should increase position index
2020-04-29 16:31:12 +02:00
genirq/irqdomain: Check pointer in irq_domain_alloc_irqs_hierarchy()
2020-04-17 10:48:41 +02:00
livepatch: Nullify obj->mod in klp_module_coming()'s error path
2019-10-07 18:57:10 +02:00
locktorture: Print ratio of acquisitions, not failures
2020-04-23 10:30:23 +02:00
PM: hibernate: Freeze kernel threads in software_resume()
2020-05-06 08:13:28 +02:00
printk: fix exclusive_console replaying
2020-02-11 04:33:51 -08:00
rcu: Avoid data-race in rcu_gp_fqs_check_wake()
2020-02-11 04:33:55 -08:00
sched/fair: Don't NUMA balance for kthreads
2020-06-22 09:05:00 +02:00
clocksource: Prevent double add_timer_on() for watchdog_timer
2020-02-11 04:34:18 -08:00
Stop the ad-hoc games with -Wno-maybe-initialized
2020-05-20 08:18:45 +02:00
acct_on(): don't mess with freeze protection
2019-05-31 06:46:05 -07:00
kernel/async.c: revert "async: simplify lowest_in_progress()"
2018-02-06 18:32:44 -08:00
audit: check the length of userspace generated audit records
2020-04-29 16:31:31 +02:00
audit: track the owner of the command mutex ourselves
2018-02-23 11:22:22 -05:00
fsnotify: add fsnotify_add_inode_mark() wrappers
2018-05-18 14:58:22 +02:00
audit: Embed key into chunk
2019-12-13 08:51:11 +01:00
audit_get_nd(): don't unlock parent too early
2019-12-13 08:51:02 +01:00
audit: fix error handling in audit_data_to_entry()
2020-03-05 16:42:17 +01:00
audit: print empty EXECVE args
2019-12-01 09:17:17 +01:00
kbuild: fix kernel/bounds.c 'W=1' warning
2018-11-13 11:08:47 -08:00
LSM: generalize flag passing to security_capable
2020-01-23 08:21:29 +01:00
make 'user_access_begin()' do 'access_ok()'
2020-06-22 09:04:58 +02:00
x86/speculation: Remove redundant arch_smt_update() invocation
2020-04-17 10:48:50 +02:00
kernel/crash_core.c: print timestamp using time64_t
2018-08-22 10:52:47 -07:00
memcg: account security cred as well to kmemcg
2020-01-09 10:19:00 +01:00
delayacct: Use raw_spinlocks
2018-04-27 14:34:51 +02:00
proc: introduce proc_create_single{,_data}
2018-05-16 07:23:35 +02:00
kernel/elfcore.c: include proper prototypes
2019-10-11 18:21:23 +02:00
proc: introduce proc_create_single{,_data}
2018-05-16 07:23:35 +02:00
make 'user_access_begin()' do 'access_ok()'
2020-06-22 09:04:58 +02:00
extable: Make init_kernel_text() global
2018-02-21 16:54:06 +01:00
bpf/error-inject/kprobes: Clear current_kprobe and enable preempt in kprobe
2018-06-21 12:33:19 +02:00
fork,memcg: alloc_thread_stack_node needs to set tsk->stack
2020-01-27 14:50:58 +01:00
PM / reboot: Eliminate race between reboot and suspend
2018-08-06 12:35:20 +02:00
futex: Unbreak futex hashing
2020-03-25 08:06:14 +01:00
kernel: hung_task.c: disable on suspend
2019-04-20 09:16:02 +02:00
memremap: split devm_memremap_pages() and memremap() infrastructure
2018-05-15 23:08:33 -07:00
irq_work: Do not raise an IPI when queueing work on the local CPU
2019-05-31 06:46:19 -07:00
jump_label: move 'asm goto' support test to Kconfig
2019-06-04 08:02:34 +02:00
kallsyms: Don't let kallsyms_lookup_size_offset() fail on retrieving the first symbol
2019-09-21 07:17:02 +02:00
kconfig: include kernel/Kconfig.preempt from init/Kconfig
2018-08-02 08:06:54 +09:00
kernel/kcov.c: mark write_comp_data() as notrace
2019-02-12 19:47:20 +01:00
kexec: add call to LSM hook in original kexec_load syscall
2018-07-16 12:31:57 -07:00
kexec: Allocate decrypted control pages for kdump if SME is enabled
2019-11-24 08:20:29 +01:00
treewide: Use array_size() in vzalloc()
2018-06-12 16:19:22 -07:00
kmod: make request_module() return an error when autoloading is disabled
2020-04-17 10:48:52 +02:00
kprobes: Fix optimize_kprobe()/unoptimize_kprobe() cancellation logic
2020-03-11 14:14:47 +01:00
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-08-13 11:25:07 -07:00
y2038: futex: Move compat implementation into futex.c
2019-12-01 09:17:38 +01:00
mm/memory_hotplug: shrink zones when offlining memory
2020-01-29 16:43:27 +01:00
modsign: log module name in the event of an error
2018-07-02 11:36:17 +02:00
module: avoid setting info->name early in case we can fall back to info->mod->name
2020-02-24 08:34:49 +01:00
modsign: log module name in the event of an error
2018-07-02 11:36:17 +02:00
x86/mm: split vmalloc_sync_all()
2020-03-25 08:06:13 +01:00
padata: purge get_cpu and reorder_via_wq from padata_do_serial
2020-05-27 17:37:36 +02:00
kernel/panic.c: do not append newline to the stack protector panic string
2019-12-01 09:17:10 +01:00
kernel/params.c: downgrade warning for unsafe parameters
2018-04-11 10:28:37 -07:00
Fix failure path in alloc_pid()
2019-01-13 09:51:06 +01:00
signal/pid_namespace: Fix reboot_pid_ns to use send_sig not force_sig
2019-07-26 09:14:01 +02:00
ptrace: reintroduce usage of subjective credentials in ptrace_has_cap()
2020-01-23 08:21:29 +01:00
PM / reboot: Eliminate race between reboot and suspend
2018-08-06 12:35:20 +02:00
kernel/relay.c: handle alloc_percpu returning NULL in relay_open
2020-06-07 13:17:54 +02:00
resource: fix locking in find_next_iomem_res()
2019-09-16 08:22:20 +02:00
rseq: uapi: Declare rseq_cs field as union, update includes
2018-07-10 22:18:52 +02:00
LSM: generalize flag passing to security_capable
2020-01-23 08:21:29 +01:00
signal: Extend exec_id to 64bits
2020-04-17 10:48:47 +02:00
cpu/hotplug: Fix "SMT disabled by BIOS" detection for KVM
2019-02-12 19:47:25 +01:00
smpboot: Remove cpumask from the API
2018-07-03 09:20:44 +02:00
nohz: Fix missing tick reprogram when interrupting an inline softirq
2018-08-03 15:52:10 +02:00
Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-08-13 11:25:07 -07:00
kernel/sys.c: prctl: fix false positive in validate_prctl_map()
2019-06-15 11:54:01 +02:00
Merge branch 'core-rseq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2018-06-10 10:17:09 -07:00
kernel: sysctl: make drop_caches write-only
2020-01-04 19:13:17 +01:00
staging: irda: remove remaining remants of irda code removal
2018-04-16 11:26:49 +02:00
taskstats: fix data-race
2020-01-09 10:18:59 +01:00
kprobes: Remove jprobe API implementation
2018-06-21 12:33:05 +02:00
torture: Keep old-school dmesg format
2018-06-25 11:30:10 -07:00
tracepoint: Fix tracepoint array element size mismatch
2018-10-17 15:35:29 -04:00
headers: untangle kmemleak.h from mm.h
2018-04-05 21:36:27 -07:00
fs: add do_fchownat(), ksys_fchown() helpers and ksys_{,l}chown() wrappers
2018-04-02 20:15:59 +02:00
kernel: provide ksys_*() wrappers for syscalls called by kernel/uid16.c
2018-04-02 20:15:30 +02:00
coredump: fix crash when umh is disabled
2020-05-14 07:57:21 +02:00
userns: use irqsave variant of refcount_dec_and_lock()
2018-08-22 10:52:47 -07:00
userns: also map extents in the reverse map to kernel IDs
2018-11-13 11:09:00 -08:00
uts: create "struct uts_namespace" from kmem_cache
2018-04-11 10:28:35 -07:00
sys: don't hold uts_sem while accessing userspace memory
2018-08-11 02:05:53 -05:00
watchdog/softlockup: Enforce that timestamp is valid on boot
2020-02-24 08:34:49 +01:00
watchdog: Mark watchdog touch functions as notrace
2018-08-30 12:56:40 +02:00
workqueue: don't use wq_select_unbound_cpu() for bound works
2020-03-18 07:14:20 +01:00
workqueue: Set worker->desc to workqueue name by default
2018-05-18 08:47:13 -07:00
b6f50bfa77