Peter Zijlstra 3b5f6045f9 x86/extable: Fix ex_handler_msr() print condition ... [ Upstream commit a1a5482a2c ] On Fri, Jun 17, 2022 at 02:08:52PM +0300, Stephane Eranian wrote: > Some changes to the way invalid MSR accesses are reported by the > kernel is causing some problems with messages printed on the > console. > > We have seen several cases of ex_handler_msr() printing invalid MSR > accesses once but the callstack multiple times causing confusion on > the console. > The problem here is that another earlier commit (5.13): > > a358f40600 ("once: implement DO_ONCE_LITE for non-fast-path "do once" functionality") > > Modifies all the pr_*_once() calls to always return true claiming > that no caller is ever checking the return value of the functions. > > This is why we are seeing the callstack printed without the > associated printk() msg. Extract the ONCE_IF(cond) part into __ONCE_LTE_IF() and use that to implement DO_ONCE_LITE_IF() and fix the extable code. Fixes: a358f40600 ("once: implement DO_ONCE_LITE for non-fast-path "do once" functionality") Reported-by: Stephane Eranian <eranian@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Stephane Eranian <eranian@google.com> Link: https://lkml.kernel.org/r/YqyVFsbviKjVGGZ9@worktop.programming.kicks-ass.net Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-08-17 14:40:41 +02:00
..
acpi	ACPI: CPPC: Don't require _OSC if X86_FEATURE_CPPC is supported	2022-07-12 16:42:23 +02:00
asm-generic	asm-generic: remove a broken and needless ifdef conditional	2022-08-03 12:05:17 +02:00
clocksource
crypto
drm	drm/scheduler: Don't kill jobs in interrupt context	2022-07-29 17:27:56 +02:00
dt-bindings
keys
kunit
kvm
linux	x86/extable: Fix ex_handler_msr() print condition	2022-08-17 14:40:41 +02:00
math-emu
media
memory
misc
net	net: Fix data-races around sysctl_[rw]mem(_offset)?.	2022-08-03 12:05:26 +02:00
pcmcia
ras
rdma
scsi	scsi: fcoe: Fix Wstringop-overflow warnings in fcoe_wwn_from_mac()	2022-06-09 10:30:26 +02:00
soc	net: mscc: ocelot: mark traps with a bool instead of keeping them in a list	2022-05-05 19:15:14 -07:00
sound	ASoC: cs35l41: Fix an out-of-bounds access in otp_packed_element_t	2022-06-09 10:29:55 +02:00
target
trace	net: sock: tracing: Fix sock_exceed_buf_limit not to dereference stale pointer	2022-07-22 10:21:19 +02:00
uapi	drm/fourcc: fix integer type usage in uapi header	2022-07-07 17:55:00 +02:00
vdso
video	video: of_display_timing.h: include errno.h	2022-07-12 16:42:17 +02:00
xen