From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Heiko Carstens <hca@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Sasha Levin <sashal@kernel.org>,
gor@linux.ibm.com, agordeev@linux.ibm.com, peterz@infradead.org,
guoren@kernel.org, npiggin@gmail.com, linux-s390@vger.kernel.org
Subject: [PATCH AUTOSEL 5.15 29/36] s390/idle: mark arch_cpu_idle() noinstr
Date: Sun, 26 Feb 2023 09:48:37 -0500 [thread overview]
Message-ID: <20230226144845.827893-29-sashal@kernel.org> (raw)
In-Reply-To: <20230226144845.827893-1-sashal@kernel.org>
From: Heiko Carstens <hca@linux.ibm.com>
[ Upstream commit a9cbc1b471d291c865907542394f1c483b93a811 ]
linux-next commit ("cpuidle: tracing: Warn about !rcu_is_watching()")
adds a new warning which hits on s390's arch_cpu_idle() function:
RCU not on for: arch_cpu_idle+0x0/0x28
WARNING: CPU: 2 PID: 0 at include/linux/trace_recursion.h:162 arch_ftrace_ops_list_func+0x24c/0x258
Modules linked in:
CPU: 2 PID: 0 Comm: swapper/2 Not tainted 6.2.0-rc6-next-20230202 #4
Hardware name: IBM 8561 T01 703 (z/VM 7.3.0)
Krnl PSW : 0404d00180000000 00000000002b55c0 (arch_ftrace_ops_list_func+0x250/0x258)
R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 RI:0 EA:3
Krnl GPRS: c0000000ffffbfff 0000000080000002 0000000000000026 0000000000000000
0000037ffffe3a28 0000037ffffe3a20 0000000000000000 0000000000000000
0000000000000000 0000000000f4acf6 00000000001044f0 0000037ffffe3cb0
0000000000000000 0000000000000000 00000000002b55bc 0000037ffffe3bb8
Krnl Code: 00000000002b55b0: c02000840051 larl %r2,0000000001335652
00000000002b55b6: c0e5fff512d1 brasl %r14,0000000000157b58
#00000000002b55bc: af000000 mc 0,0
>00000000002b55c0: a7f4ffe7 brc 15,00000000002b558e
00000000002b55c4: 0707 bcr 0,%r7
00000000002b55c6: 0707 bcr 0,%r7
00000000002b55c8: eb6ff0480024 stmg %r6,%r15,72(%r15)
00000000002b55ce: b90400ef lgr %r14,%r15
Call Trace:
[<00000000002b55c0>] arch_ftrace_ops_list_func+0x250/0x258
([<00000000002b55bc>] arch_ftrace_ops_list_func+0x24c/0x258)
[<0000000000f5f0fc>] ftrace_common+0x1c/0x20
[<00000000001044f6>] arch_cpu_idle+0x6/0x28
[<0000000000f4acf6>] default_idle_call+0x76/0x128
[<00000000001cc374>] do_idle+0xf4/0x1b0
[<00000000001cc6ce>] cpu_startup_entry+0x36/0x40
[<0000000000119d00>] smp_start_secondary+0x140/0x150
[<0000000000f5d2ae>] restart_int_handler+0x6e/0x90
Mark arch_cpu_idle() noinstr like all other architectures with
CONFIG_ARCH_WANTS_NO_INSTR (should) have it to fix this.
Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/s390/kernel/idle.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/s390/kernel/idle.c b/arch/s390/kernel/idle.c
index 4bf1ee293f2b3..a0da049e73609 100644
--- a/arch/s390/kernel/idle.c
+++ b/arch/s390/kernel/idle.c
@@ -44,7 +44,7 @@ void account_idle_time_irq(void)
S390_lowcore.last_update_timer = idle->timer_idle_exit;
}
-void arch_cpu_idle(void)
+void noinstr arch_cpu_idle(void)
{
struct s390_idle_data *idle = this_cpu_ptr(&s390_idle);
unsigned long idle_time;
--
2.39.0
next prev parent reply other threads:[~2023-02-26 14:57 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-26 14:48 [PATCH AUTOSEL 5.15 01/36] wifi: ath9k: Fix use-after-free in ath9k_hif_usb_disconnect() Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 02/36] wifi: brcmfmac: Fix potential stack-out-of-bounds in brcmf_c_preinit_dcmds() Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 03/36] rcu: Make RCU_LOCKDEP_WARN() avoid early lockdep checks Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 04/36] rcu: Suppress smp_processor_id() complaint in synchronize_rcu_expedited_wait() Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 05/36] rcu-tasks: Make rude RCU-Tasks work well with CPU hotplug Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 06/36] wifi: ath11k: debugfs: fix to work with multiple PCI devices Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 07/36] thermal: intel: Fix unsigned comparison with less than zero Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 08/36] timers: Prevent union confusion from unexpected restart_syscall() Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 09/36] x86/bugs: Reset speculation control settings on init Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 10/36] wifi: brcmfmac: ensure CLM version is null-terminated to prevent stack-out-of-bounds Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 11/36] wifi: mt7601u: fix an integer underflow Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 12/36] inet: fix fast path in __inet_hash_connect() Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 13/36] ice: restrict PTP HW clock freq adjustments to 100, 000, 000 PPB Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 14/36] ice: add missing checks for PF vsi type Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 15/36] ACPI: Don't build ACPICA with '-Os' Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 16/36] thermal: intel: intel_pch: Add support for Wellsburg PCH Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 17/36] clocksource: Suspend the watchdog temporarily when high read latency detected Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 18/36] crypto: hisilicon: Wipe entire pool on error Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 19/36] netpoll: Remove 4s sleep during carrier detection Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 20/36] net: bcmgenet: Add a check for oversized packets Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 21/36] m68k: Check syscall_trace_enter() return code Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 22/36] netfilter: nf_tables: NULL pointer dereference in nf_tables_updobj() Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 23/36] tools/power/x86/intel-speed-select: Add Emerald Rapid quirk Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 24/36] wifi: mt76: dma: free rx_head in mt76_dma_rx_cleanup Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 25/36] ACPI: video: Fix Lenovo Ideapad Z570 DMI match Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 26/36] net/mlx5: fw_tracer: Fix debug print Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 27/36] coda: Avoid partial allocation of sig_inputArgs Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 28/36] uaccess: Add minimum bounds check on kernel buffer size Sasha Levin
2023-02-26 14:48 ` Sasha Levin [this message]
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 30/36] time/debug: Fix memory leak with using debugfs_lookup() Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 31/36] PM: domains: fix " Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 32/36] PM: EM: " Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 33/36] Bluetooth: btusb: Add VID:PID 13d3:3529 for Realtek RTL8821CE Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 34/36] hv_netvsc: Check status in SEND_RNDIS_PKT completion message Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 35/36] devlink: health: Fix nla_nest_end in error flow Sasha Levin
2023-02-26 14:48 ` [PATCH AUTOSEL 5.15 36/36] scm: add user copy checks to put_cmsg() Sasha Levin
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