From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Francis Laniel <flaniel@linux.microsoft.com>,
Will Deacon <will@kernel.org>, Sasha Levin <sashal@kernel.org>,
catalin.marinas@arm.com, broonie@kernel.org,
keescook@chromium.org, peterz@infradead.org,
mark.rutland@arm.com, christophe.leroy@csgroup.eu,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH AUTOSEL 5.15 06/45] arm64: Do not forget syscall when starting a new thread.
Date: Sun, 7 Aug 2022 21:35:10 -0400 [thread overview]
Message-ID: <20220808013551.315446-6-sashal@kernel.org> (raw)
In-Reply-To: <20220808013551.315446-1-sashal@kernel.org>
From: Francis Laniel <flaniel@linux.microsoft.com>
[ Upstream commit de6921856f99c11d3986c6702d851e1328d4f7f6 ]
Enable tracing of the execve*() system calls with the
syscalls:sys_exit_execve tracepoint by removing the call to
forget_syscall() when starting a new thread and preserving the value of
regs->syscallno across exec.
Signed-off-by: Francis Laniel <flaniel@linux.microsoft.com>
Link: https://lore.kernel.org/r/20220608162447.666494-2-flaniel@linux.microsoft.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/arm64/include/asm/processor.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h
index 5e73d7f7d1e7..d9bf3d12a2b8 100644
--- a/arch/arm64/include/asm/processor.h
+++ b/arch/arm64/include/asm/processor.h
@@ -204,8 +204,9 @@ void tls_preserve_current_state(void);
static inline void start_thread_common(struct pt_regs *regs, unsigned long pc)
{
+ s32 previous_syscall = regs->syscallno;
memset(regs, 0, sizeof(*regs));
- forget_syscall(regs);
+ regs->syscallno = previous_syscall;
regs->pc = pc;
if (system_uses_irq_prio_masking())
--
2.35.1
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next prev parent reply other threads:[~2022-08-08 2:11 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20220808013551.315446-1-sashal@kernel.org>
2022-08-08 1:35 ` [PATCH AUTOSEL 5.15 03/45] arm64: kernel: drop unnecessary PoC cache clean+invalidate Sasha Levin
2022-08-08 1:35 ` [PATCH AUTOSEL 5.15 04/45] arm64: mm: provide idmap pointer to cpu_replace_ttbr1() Sasha Levin
2022-08-08 1:35 ` [PATCH AUTOSEL 5.15 05/45] arm64: kaslr: defer initialization to initcall where permitted Sasha Levin
2022-08-08 1:35 ` Sasha Levin [this message]
2022-08-08 1:35 ` [PATCH AUTOSEL 5.15 07/45] arm64: fix oops in concurrently setting insn_emulation sysctls Sasha Levin
2022-08-08 1:35 ` [PATCH AUTOSEL 5.15 09/45] arm64: kasan: Revert "arm64: mte: reset the page tag in page->flags" Sasha Levin
2022-08-08 1:35 ` [PATCH AUTOSEL 5.15 18/45] ARM: dts: imx6ul: add missing properties for sram Sasha Levin
2022-08-08 1:35 ` [PATCH AUTOSEL 5.15 19/45] ARM: dts: imx6ul: change operating-points to uint32-matrix Sasha Levin
2022-08-08 1:35 ` [PATCH AUTOSEL 5.15 20/45] ARM: dts: imx6ul: fix keypad compatible Sasha Levin
2022-08-08 1:35 ` [PATCH AUTOSEL 5.15 21/45] ARM: dts: imx6ul: fix csi node compatible Sasha Levin
2022-08-08 1:35 ` [PATCH AUTOSEL 5.15 22/45] ARM: dts: imx6ul: fix lcdif " Sasha Levin
2022-08-08 1:35 ` [PATCH AUTOSEL 5.15 23/45] ARM: dts: imx6ul: fix qspi " Sasha Levin
2022-08-08 1:35 ` [PATCH AUTOSEL 5.15 24/45] ARM: dts: BCM5301X: Add DT for Meraki MR26 Sasha Levin
2022-08-08 1:35 ` [PATCH AUTOSEL 5.15 25/45] ARM: dts: ux500: Fix Codina accelerometer mounting matrix Sasha Levin
2022-08-08 1:35 ` [PATCH AUTOSEL 5.15 26/45] ARM: dts: ux500: Fix Gavini " Sasha Levin
2022-08-08 1:35 ` [PATCH AUTOSEL 5.15 28/45] ARM: OMAP2+: display: Fix refcount leak bug Sasha Levin
2022-08-08 1:35 ` [PATCH AUTOSEL 5.15 29/45] ARM: OMAP2+: pdata-quirks: " Sasha Levin
2022-08-08 1:35 ` [PATCH AUTOSEL 5.15 36/45] arm64: dts: allwinner: a64: orangepi-win: Fix LED node name Sasha Levin
2022-08-08 1:35 ` [PATCH AUTOSEL 5.15 37/45] ARM: shmobile: rcar-gen2: Increase refcount for new reference Sasha Levin
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