From: Francis Laniel Date: Wed, 8 Jun 2022 16:24:46 +0000 (+0100) Subject: arm64: Do not forget syscall when starting a new thread. X-Git-Tag: v6.6.17~6978^2~10^2~5 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=de6921856f99c11d3986c6702d851e1328d4f7f6;p=platform%2Fkernel%2Flinux-rpi.git arm64: Do not forget syscall when starting a new thread. 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 Link: https://lore.kernel.org/r/20220608162447.666494-2-flaniel@linux.microsoft.com Signed-off-by: Will Deacon --- diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h index 9e58749..86eb0bf 100644 --- a/arch/arm64/include/asm/processor.h +++ b/arch/arm64/include/asm/processor.h @@ -272,8 +272,9 @@ 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())