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5868347a192afb99b189d72946ab6a321b6115ac
linux/arch/mips/kernel
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Xingxing Su 5868347a19 MIPS: Do not use smp_processor_id() in preemptible code 
Use preempt_disable() to fix the following bug under CONFIG_DEBUG_PREEMPT.

[   21.915305] BUG: using smp_processor_id() in preemptible [00000000] code: qemu-system-mip/1056
[   21.923996] caller is do_ri+0x1d4/0x690
[   21.927921] CPU: 0 PID: 1056 Comm: qemu-system-mip Not tainted 5.8.0-rc2 #3
[   21.934913] Stack : 0000000000000001 ffffffff81370000 ffffffff8071cd60 a80f926d5ac95694
[   21.942984]         a80f926d5ac95694 0000000000000000 98000007f0043c88 ffffffff80f2fe40
[   21.951054]         0000000000000000 0000000000000000 0000000000000001 0000000000000000
[   21.959123]         ffffffff802d60cc 98000007f0043dd8 ffffffff81f4b1e8 ffffffff81f60000
[   21.967192]         ffffffff81f60000 ffffffff80fe0000 ffff000000000000 0000000000000000
[   21.975261]         fffffffff500cce1 0000000000000001 0000000000000002 0000000000000000
[   21.983331]         ffffffff80fe1a40 0000000000000006 ffffffff8077f940 0000000000000000
[   21.991401]         ffffffff81460000 98000007f0040000 98000007f0043c80 000000fffba8cf20
[   21.999471]         ffffffff8071cd60 0000000000000000 0000000000000000 0000000000000000
[   22.007541]         0000000000000000 0000000000000000 ffffffff80212ab4 a80f926d5ac95694
[   22.015610]         ...
[   22.018086] Call Trace:
[   22.020562] [<ffffffff80212ab4>] show_stack+0xa4/0x138
[   22.025732] [<ffffffff8071cd60>] dump_stack+0xf0/0x150
[   22.030903] [<ffffffff80c73f5c>] check_preemption_disabled+0xf4/0x100
[   22.037375] [<ffffffff80213b84>] do_ri+0x1d4/0x690
[   22.042198] [<ffffffff8020b828>] handle_ri_int+0x44/0x5c
[   24.359386] BUG: using smp_processor_id() in preemptible [00000000] code: qemu-system-mip/1072
[   24.368204] caller is do_ri+0x1a8/0x690
[   24.372169] CPU: 4 PID: 1072 Comm: qemu-system-mip Not tainted 5.8.0-rc2 #3
[   24.379170] Stack : 0000000000000001 ffffffff81370000 ffffffff8071cd60 a80f926d5ac95694
[   24.387246]         a80f926d5ac95694 0000000000000000 98001007ef06bc88 ffffffff80f2fe40
[   24.395318]         0000000000000000 0000000000000000 0000000000000001 0000000000000000
[   24.403389]         ffffffff802d60cc 98001007ef06bdd8 ffffffff81f4b818 ffffffff81f60000
[   24.411461]         ffffffff81f60000 ffffffff80fe0000 ffff000000000000 0000000000000000
[   24.419533]         fffffffff500cce1 0000000000000001 0000000000000002 0000000000000000
[   24.427603]         ffffffff80fe0000 0000000000000006 ffffffff8077f940 0000000000000020
[   24.435673]         ffffffff81460020 98001007ef068000 98001007ef06bc80 000000fffbbbb370
[   24.443745]         ffffffff8071cd60 0000000000000000 0000000000000000 0000000000000000
[   24.451816]         0000000000000000 0000000000000000 ffffffff80212ab4 a80f926d5ac95694
[   24.459887]         ...
[   24.462367] Call Trace:
[   24.464846] [<ffffffff80212ab4>] show_stack+0xa4/0x138
[   24.470029] [<ffffffff8071cd60>] dump_stack+0xf0/0x150
[   24.475208] [<ffffffff80c73f5c>] check_preemption_disabled+0xf4/0x100
[   24.481682] [<ffffffff80213b58>] do_ri+0x1a8/0x690
[   24.486509] [<ffffffff8020b828>] handle_ri_int+0x44/0x5c

Signed-off-by: Xingxing Su <suxingxing@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
2020-07-05 11:43:52 +02:00
..
syscalls
vfs: add faccessat2 syscall
2020-05-14 16:44:25 +02:00
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
asm-offsets.c
MIPS: Remove struct task_struct fpu state when CONFIG_MIPS_FP_SUPPORT=n
2018-11-09 10:23:19 -08:00
binfmt_elfn32.c
y2038: elfcore: Use __kernel_old_timeval for process times
2019-11-15 14:38:29 +01:00
binfmt_elfo32.c
y2038: elfcore: Use __kernel_old_timeval for process times
2019-11-15 14:38:29 +01:00
bmips_5xxx_init.S
MIPS: BCM5xxx: Remove dead init_fpu code
2018-11-08 11:20:57 -08:00
bmips_vec.S
MIPS: BMIPS: Add Whirlwind (BMIPS5200) initialization code
2016-05-09 12:00:01 +02:00
branch.c
MIPS: Use fallthrough for arch/mips
2020-05-07 11:55:47 +02:00
cacheinfo.c
mips: cacheinfo: report shared CPU map
2019-11-26 10:33:08 -08:00
cevt-bcm1480.c
MIPS: Replace setup_irq() by request_irq()
2020-03-05 16:47:35 +01:00
cevt-ds1287.c
MIPS: Replace setup_irq() by request_irq()
2020-03-05 16:47:35 +01:00
cevt-gt641xx.c
MIPS: Replace setup_irq() by request_irq()
2020-03-05 16:47:35 +01:00
cevt-r4k.c
mips: cevt-r4k: Update the r4k-clockevent frequency in sync with CPU
2020-05-22 09:14:32 +02:00
cevt-sb1250.c
MIPS: Replace setup_irq() by request_irq()
2020-03-05 16:47:35 +01:00
cevt-txx9.c
MIPS: Replace setup_irq() by request_irq()
2020-03-05 16:47:35 +01:00
cmpxchg.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cps-vec-ns16550.S
mips: Add CPS_NS16550_WIDTH config
2020-05-22 09:12:52 +02:00
cps-vec.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
cpu-probe.c
KVM: MIPS: Enable KVM support for Loongson-3
2020-06-04 13:51:53 -04:00
crash_dump.c
mm: remove include/linux/bootmem.h
2018-10-31 08:54:16 -07:00
crash.c
mm: remove include/linux/bootmem.h
2018-10-31 08:54:16 -07:00
csrc-bcm1480.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
csrc-ioasic.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
csrc-r4k.c
mips: csrc-r4k: Mark R4K timer as unstable if CPU freq changes
2020-05-22 09:14:06 +02:00
csrc-sb1250.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
early_printk_8250.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
2019-05-21 11:28:39 +02:00
early_printk.c
mips: unify prom_putchar() declarations
2018-07-17 09:40:17 -07:00
elf.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
entry.S
mips: Add MIPS Release 5 support
2020-05-22 09:09:01 +02:00
ftrace.c
MIPS: ftrace: Reword prepare_ftrace_return() comment block
2019-06-11 15:46:21 -07:00
genex.S
MIPS: Fix IRQ tracing when call handle_fpe() and handle_msa_fpe()
2020-05-27 13:11:49 +02:00
gpio_txx9.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
head.S
MIPS: Clear XContext at boot time
2020-04-24 18:37:23 +02:00
i8253.c
MIPS: Replace setup_irq() by request_irq()
2020-03-05 16:47:35 +01:00
idle.c
MIPS: Use fallthrough for arch/mips
2020-05-07 11:55:47 +02:00
irq_txx9.c
…
irq-gt641xx.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
2019-05-21 11:28:39 +02:00
irq-msc01.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
irq-rm7000.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
irq.c
MIPS: irq: Allocate accurate order pages for irq stack
2019-02-19 12:45:01 -08:00
jump_label.c
MIPS: jump_label: Use compact branches for >= r6
2019-04-09 16:21:30 -07:00
kgdb.c
MIPS: KGDB: fix kgdb support for SMP platforms.
2019-03-28 11:35:58 -07:00
kprobes.c
mm, kprobes: generalize and rename notify_page_fault() as kprobe_page_fault()
2019-07-16 19:23:22 -07:00
linux32.c
MIPS: Delete unused code in linux32.c
2018-08-01 13:20:27 -07:00
machine_kexec.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230
2019-06-19 17:09:06 +02:00
Makefile
MIPS: Remove not used 8250-platform.c
2020-05-17 10:25:26 +02:00
mcount.S
mips: ftrace: fix static function graph tracing
2018-06-19 15:00:12 -07:00
mips_machine.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
mips-cm.c
mips: cm: Add L2 ECC/parity errors reporting
2020-05-07 13:11:38 +02:00
mips-cpc.c
remove ioremap_nocache and devm_ioremap_nocache
2020-01-06 09:45:59 +01:00
mips-mt-fpaff.c
sched/core: Provide a pointer to the valid CPU mask
2019-06-03 11:49:37 +02:00
mips-mt.c
MIPS: MT: Remove norps command line parameter
2018-11-26 22:49:14 -08:00
mips-r2-to-r6-emul.c
MIPS: Use fallthrough for arch/mips
2020-05-07 11:55:47 +02:00
module.c
mm: don't include asm/pgtable.h if linux/mm.h is already included
2020-06-09 09:39:13 -07:00
octeon_switch.S
Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables
2018-06-14 12:21:18 +09:00
perf_event_mipsxx.c
MIPS: perf: Remove unnecessary "fallthrough" pseudo keywords
2020-05-02 13:21:09 +02:00
perf_event.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
pm-cps.c
MIPS: barrier: Add __SYNC() infrastructure
2019-10-07 09:42:17 -07:00
pm.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
probes-common.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
proc.c
mips: Add MIPS Release 5 support
2020-05-22 09:09:01 +02:00
process.c
mm: don't include asm/pgtable.h if linux/mm.h is already included
2020-06-09 09:39:13 -07:00
prom.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
ptrace32.c
mm: don't include asm/pgtable.h if linux/mm.h is already included
2020-06-09 09:39:13 -07:00
ptrace.c
mm: don't include asm/pgtable.h if linux/mm.h is already included
2020-06-09 09:39:13 -07:00
r4k_fpu.S
mips: Add MIPS Release 5 support
2020-05-22 09:09:01 +02:00
r4k_switch.S
Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables
2018-06-14 12:21:18 +09:00
r4k-bugs64.c
MIPS: r4k-bugs64: Drop CONFIG_CPU_MIPSR6 checks
2019-10-07 09:38:54 -07:00
r2300_fpu.S
MIPS: Simplify FP context initialization
2018-11-09 10:23:13 -08:00
r2300_switch.S
Kbuild: rename CC_STACKPROTECTOR[_STRONG] config variables
2018-06-14 12:21:18 +09:00
relocate_kernel.S
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 230
2019-06-19 17:09:06 +02:00
relocate.c
MIPS: Remove no-op/identity casts
2018-08-31 11:49:20 -07:00
reset.c
MIPS: Hang more efficiently on halt/powerdown/restart
2018-03-09 11:22:43 +00:00
rtlx-cmp.c
…
rtlx-mt.c
MIPS: Replace setup_irq() by request_irq()
2020-03-05 16:47:35 +01:00
rtlx.c
vfs: do bulk POLL* -> EPOLL* replacement
2018-02-11 14:34:03 -08:00
scall32-o32.S
mips: remove nargs from __SYSCALL
2019-07-30 10:50:30 -07:00
scall64-n32.S
mips: remove nargs from __SYSCALL
2019-07-30 10:50:30 -07:00
scall64-n64.S
mips: remove nargs from __SYSCALL
2019-07-30 10:50:30 -07:00
scall64-o32.S
MIPS: asm: Rename some macros to avoid build errors
2020-05-07 13:20:05 +02:00
segment.c
mips: kernel: no need to check return value of debugfs_create functions
2019-01-22 11:17:20 -08:00
setup.c
MIPS: Remove useless parameter of bootcmdline_init()
2020-05-19 17:36:04 +02:00
signal32.c
Remove 'type' argument from access_ok() function
2019-01-03 18:57:57 -08:00
signal_n32.c
Merge branch 'siginfo-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
2019-07-08 21:48:15 -07:00
signal_o32.c
signal: Remove task parameter from force_sig
2019-05-27 09:36:28 -05:00
signal-common.h
MIPS: Save MSA extended context around signals
2015-09-03 12:07:59 +02:00
signal.c
MIPS: Replace zero-length array with flexible-array
2020-05-08 12:01:02 +02:00
smp-bmips.c
mm: don't include asm/pgtable.h if linux/mm.h is already included
2020-06-09 09:39:13 -07:00
smp-cmp.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 182
2019-05-30 11:29:20 -07:00
smp-cps.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
smp-mt.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 182
2019-05-30 11:29:20 -07:00
smp-up.c
MIPS: SMP: Allow boot_secondary SMP op to return errors
2017-08-30 00:57:27 +02:00
smp.c
Merge tag 'mips_5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
2020-03-31 08:51:45 -07:00
spinlock_test.c
mips: kernel: no need to check return value of debugfs_create functions
2019-01-22 11:17:20 -08:00
spram.c
mips: Add CONFIG/CONFIG6/Cause reg fields macro
2020-05-22 09:12:22 +02:00
stacktrace.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
sync-r4k.c
MIPS: sync-r4k: do slave counter synchronization with disabled HW interrupts
2020-01-22 10:16:18 -08:00
syscall.c
MIPS: syscall: Emit Loongson3 sync workarounds within asm
2019-10-07 09:43:05 -07:00
sysrq.c
MIPS: constify sysrq_key_op
2020-05-15 14:53:19 +02:00
time.c
mips: Add udelay lpj numbers adjustment
2020-05-22 09:13:32 +02:00
topology.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
traps.c
MIPS: Do not use smp_processor_id() in preemptible code
2020-07-05 11:43:52 +02:00
unaligned.c
MIPS: Fix build warning about "PTR_STR" redefinition
2020-05-30 10:58:30 +02:00
uprobes.c
MIPS: uprobes: remove set but not used variable 'epc'
2019-05-29 13:20:30 -07:00
vdso.c
mmap locking API: use coccinelle to convert mmap_sem rwsem call sites
2020-06-09 09:39:14 -07:00
vmlinux.lds.S
MIPS: Truncate link address into 32bit for 32bit kernel
2020-05-07 10:31:01 +02:00
vpe-cmp.c
…
vpe-mt.c
…
vpe.c
MIPS: VPE: Fix a double free and a memory leak in 'release_vpe()'
2020-02-15 12:44:03 -08:00
watch.c
MIPS: Use fallthrough for arch/mips
2020-05-07 11:55:47 +02:00