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| author | Al Viro <viro@zeniv.linux.org.uk> | 2022-08-08 18:08:48 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-08-25 12:38:03 +0300 |
| commit | f20bc59ccf9e4502375b4eb90268c968341a86e4 (patch) | |
| tree | 7d06f25db28a77d695b76cdee188974fea184f3d /arch | |
| parent | 8d0118a027e3c9ab39e31b1fafdb7103922ef3c3 (diff) | |
| download | linux-f20bc59ccf9e4502375b4eb90268c968341a86e4.tar.xz | |
nios2: fix syscall restart checks
commit 2d631bd58fe0ea3e3350212e23c9aba1fb606514 upstream.
sys_foo() returns -512 (aka -ERESTARTSYS) => do_signal() sees
512 in r2 and 1 in r1.
sys_foo() returns 512 => do_signal() sees 512 in r2 and 0 in r1.
The former is restart-worthy; the latter obviously isn't.
Fixes: b53e906d255d ("nios2: Signal handling support")
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/nios2/kernel/signal.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/nios2/kernel/signal.c b/arch/nios2/kernel/signal.c index e45491d1d3e4..d5000d494699 100644 --- a/arch/nios2/kernel/signal.c +++ b/arch/nios2/kernel/signal.c @@ -242,7 +242,7 @@ static int do_signal(struct pt_regs *regs) /* * If we were from a system call, check for system call restarting... */ - if (regs->orig_r2 >= 0) { + if (regs->orig_r2 >= 0 && regs->r1) { continue_addr = regs->ea; restart_addr = continue_addr - 4; retval = regs->r2; |