On Thu, Mar 28, 2024 at 02:27:56PM +0000, Jiaxun Yang wrote: > thread_info.syscall is used by syscall_get_nr to supply syscall nr > over a thread stack frame. > > Previously, thread_info.syscall is only saved at syscall_trace_enter > when syscall tracing is enabled. However rest of the kernel code do > expect syscall_get_nr to be available without syscall tracing. The > previous design breaks collect_syscall. > > Move saving process to syscall entry to fix it. > > Reported-by: Xi Ruoyao <xry111@xxxxxxxxxxx> > Link: https://github.com/util-linux/util-linux/issues/2867 > Signed-off-by: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx> > --- > arch/mips/include/asm/ptrace.h | 2 +- > arch/mips/kernel/asm-offsets.c | 1 + > arch/mips/kernel/ptrace.c | 15 ++++++--------- > arch/mips/kernel/scall32-o32.S | 23 +++++++++++++---------- > arch/mips/kernel/scall64-n32.S | 3 ++- > arch/mips/kernel/scall64-n64.S | 3 ++- > arch/mips/kernel/scall64-o32.S | 33 +++++++++++++++++---------------- > 7 files changed, 42 insertions(+), 38 deletions(-) applied to mips-fixes. Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]
