From: Helge Deller <deller@gmx.de> Date: Mon, 1 Aug 2022 15:36:15 +0000 (+0200) Subject: parisc: io_pgetevents_time64() needs compat syscall in 32-bit compat mode X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=6431e92fc827bdd2d28f79150d90415ba9ce0d21;p=linux.git parisc: io_pgetevents_time64() needs compat syscall in 32-bit compat mode For all syscalls in 32-bit compat mode on 64-bit kernels the upper 32-bits of the 64-bit registers are zeroed out, so a negative 32-bit signed value will show up as positive 64-bit signed value. This behaviour breaks the io_pgetevents_time64() syscall which expects signed 64-bit values for the "min_nr" and "nr" parameters. Fix this by switching to the compat_sys_io_pgetevents_time64() syscall, which uses "compat_long_t" types for those parameters. Cc: <stable@vger.kernel.org> # v5.1+ Signed-off-by: Helge Deller <deller@gmx.de> --- diff --git a/arch/parisc/kernel/syscalls/syscall.tbl b/arch/parisc/kernel/syscalls/syscall.tbl index 68b46fe2f17c5..8a99c998da9bb 100644 --- a/arch/parisc/kernel/syscalls/syscall.tbl +++ b/arch/parisc/kernel/syscalls/syscall.tbl @@ -413,7 +413,7 @@ 412 32 utimensat_time64 sys_utimensat sys_utimensat 413 32 pselect6_time64 sys_pselect6 compat_sys_pselect6_time64 414 32 ppoll_time64 sys_ppoll compat_sys_ppoll_time64 -416 32 io_pgetevents_time64 sys_io_pgetevents sys_io_pgetevents +416 32 io_pgetevents_time64 sys_io_pgetevents compat_sys_io_pgetevents_time64 417 32 recvmmsg_time64 sys_recvmmsg compat_sys_recvmmsg_time64 418 32 mq_timedsend_time64 sys_mq_timedsend sys_mq_timedsend 419 32 mq_timedreceive_time64 sys_mq_timedreceive sys_mq_timedreceive