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Merge bitcoin/bitcoin#24369: util: Add missing rseq to syscall sandbox

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6c4fd36089 util: Add missing rseq to syscall sandbox (laanwj)

Pull request description:

  Fixes #24368.

ACKs for top commit:
  prusnak:
    Approach ACK 6c4fd36

Tree-SHA512: fc01b99483581280fc5dcbd3367975677849eadf2aabb66850dd0fa40bba9c3979c67d96427c1f4feff948b68744797c4a3ec0a12fc983d91642da794fcea824
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fanquake 2022-02-20 11:28:29 +00:00
commit ffcbaf569e
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6
src/util/syscall_sandbox.cpp
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@ -68,6 +68,10 @@ bool g_syscall_sandbox_log_violation_before_terminating{false};
#define __NR_copy_file_range 326
#endif
#ifndef __NR_rseq
#define __NR_rseq 334
#endif
// This list of syscalls in LINUX_SYSCALLS is only used to map syscall numbers to syscall names in
// order to be able to print user friendly error messages which include the syscall name in addition
// to the syscall number.
@ -327,6 +331,7 @@ const std::map<uint32_t, std::string> LINUX_SYSCALLS{
{__NR_request_key, "request_key"},
{__NR_restart_syscall, "restart_syscall"},
{__NR_rmdir, "rmdir"},
{__NR_rseq, "rseq"},
{__NR_rt_sigaction, "rt_sigaction"},
{__NR_rt_sigpending, "rt_sigpending"},
{__NR_rt_sigprocmask, "rt_sigprocmask"},
@ -723,6 +728,7 @@ public:
allowed_syscalls.insert(__NR_fork); // create a child process
allowed_syscalls.insert(__NR_tgkill); // send a signal to a thread
allowed_syscalls.insert(__NR_wait4); // wait for process to change state, BSD style
allowed_syscalls.insert(__NR_rseq); // register restartable sequence for thread
}
void AllowScheduling()