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2e38eb04c9
linux/arch/sh/kernel
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Naveen N. Rao 2e38eb04c9 kprobes: Do not increment probe miss count in the fault handler 
Kprobes has a counter 'nmissed', that is used to count the number of
times a probe handler was not called. This generally happens when we hit
a kprobe while handling another kprobe.

However, if one of the probe handlers causes a fault, we are currently
incrementing 'nmissed'. The comment in fault handler indicates that this
can be used to account faults taken by the probe handlers. But, this has
never been the intention as is evident from the comment above 'nmissed'
in 'struct kprobe':

	/*count the number of times this probe was temporarily disarmed */
	unsigned long nmissed;

Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Link: https://lkml.kernel.org/r/20210601120150.672652-1-naveen.n.rao@linux.vnet.ibm.com
2021-06-03 15:47:26 +02:00
..
cpu arch: sh: remove duplicate include 2021-01-06 19:55:27 -05:00
syscalls Kbuild updates for v5.13 (2nd) 2021-05-08 10:00:11 -07:00
vsyscall mmap locking API: use coccinelle to convert mmap_sem rwsem call sites 2020-06-09 09:39:14 -07:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
asm-offsets.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
crash_dump.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
debugtraps.S sh: kernel: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
disassemble.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
dma-coherent.c dma-mapping: merge <linux/dma-noncoherent.h> into <linux/dma-map-ops.h> 2020-10-06 07:07:06 +02:00
dumpstack.c sh: stacktrace: Remove stacktrace_ops.stack() 2020-08-14 22:05:11 -04:00
dwarf.c It appears that the zero-day bot did find a bug in my sh build. 2019-01-05 14:08:00 -08:00
entry-common.S sh: fix syscall tracing 2020-09-13 21:22:55 -04:00
ftrace.c tracing: Fix various typos in comments 2021-03-23 14:08:18 -04:00
head_32.S sh: kernel: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
hw_breakpoint.c sh: kernel: hw_breakpoint: Fix missing break in switch statement 2019-08-11 16:15:16 -05:00
idle.c sched/idle: Fix arch_cpu_idle() vs tracing 2020-11-24 16:47:35 +01:00
io_trapped.c sh: unexport register_trapped_io and match_trapped_io_handler 2020-08-14 22:05:16 -04:00
io.c sh: kernel: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
iomap.c iomap: constify ioreadX() iomem argument (as in generic implementation) 2020-08-14 19:56:57 -07:00
ioport.c sh: don't include <asm/io_trapped.h> in <asm/io.h> 2020-08-14 22:05:16 -04:00
irq_32.c sh: kernel: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
irq.c softirq: Move do_softirq_own_stack() to generic asm header 2021-02-10 23:34:16 +01:00
kdebugfs.c sh: no need to check return value of debugfs_create functions 2019-06-03 15:39:40 +02:00
kgdb.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
kprobes.c kprobes: Do not increment probe miss count in the fault handler 2021-06-03 15:47:26 +02:00
machine_kexec.c mm: remove unneeded includes of <asm/pgalloc.h> 2020-08-07 11:33:26 -07:00
machvec.c Cleanup, SECCOMP_FILTER support, message printing fixes, and other 2020-08-15 18:50:32 -07:00
Makefile sh: remove -Werror from Makefiles 2020-08-14 22:05:13 -04:00
module.c sh: remove sh5 support 2020-06-01 14:48:52 -04:00
nmi_debug.c sh: kernel: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
perf_callchain.c sh: stacktrace: Remove stacktrace_ops.stack() 2020-08-14 22:05:11 -04:00
perf_event.c sh: Get rid of oprofile leftovers 2021-04-22 13:32:39 +01:00
process_32.c arch: setup PF_IO_WORKER threads like PF_KTHREAD 2021-02-21 17:25:22 -07:00
process.c sh: remove sh5 support 2020-06-01 14:48:52 -04:00
ptrace_32.c sh: fix syscall tracing 2020-09-13 21:22:55 -04:00
ptrace.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
reboot.c sh: remove sh5 support 2020-06-01 14:48:52 -04:00
relocate_kernel.S sh: kernel: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
return_address.c sh: kernel: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
setup.c initrd: remove support for multiple floppies 2020-07-30 08:22:33 +02:00
sh_bios.c sh: kernel: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
sh_ksyms_32.c sh: Add missing DECLARE_EXPORT() for __ashiftrt_r4_xx 2020-06-01 14:48:49 -04:00
signal_32.c sh: add support for TIF_NOTIFY_SIGNAL 2020-11-09 08:16:55 -07:00
smp.c sh: kernel: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
stacktrace.c sh: stacktrace: Remove stacktrace_ops.stack() 2020-08-14 22:05:11 -04:00
swsusp.c sh: kernel: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
sys_sh32.c mm: add ksys_fadvise64_64() helper; remove in-kernel call to sys_fadvise64_64() 2018-04-02 20:16:10 +02:00
sys_sh.c mmap locking API: use coccinelle to convert mmap_sem rwsem call sites 2020-06-09 09:39:14 -07:00
syscalls_32.S sh: remove nargs from __SYSCALL 2019-03-05 21:07:13 -08:00
time.c sh: add the sh_ prefix to early platform symbols 2019-10-07 13:50:48 +02:00
topology.c sh: kernel: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
traps_32.c uaccess: add force_uaccess_{begin,end} helpers 2020-08-12 10:57:59 -07:00
traps.c sh: Get rid of nmi_count() 2020-11-23 10:31:05 +01:00
unwinder.c sh: kernel: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
vmlinux.lds.S vmlinux.lds.h: Split ELF_DETAILS from STABS_DEBUG 2020-09-01 09:50:35 +02:00