Commit de692185 authored by Francis Laniel's avatar Francis Laniel Committed by Will Deacon
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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: default avatarFrancis Laniel <flaniel@linux.microsoft.com>
Link: https://lore.kernel.org/r/20220608162447.666494-2-flaniel@linux.microsoft.com


Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent 9f6a503d

arch/arm64/include/asm/processor.h

+2 −1
Original line number Diff line number Diff line
@@ -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())