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Shutemov" , Shuah Khan , linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Dmitry Vyukov , Kostya Serebryany , Evgeniy Stepanov , Lee Smith , Ramana Radhakrishnan , Jacob Bramley , Ruben Ayrapetyan , Chintan Pandya Subject: [PATCH v6 11/11] arm64: annotate user pointers casts detected by sparse Date: Thu, 30 Aug 2018 13:41:16 +0200 Message-Id: <5d54526e5ff2e5ad63d0dfdd9ab17cf359afa4f2.1535629099.git.andreyknvl@google.com> X-Mailer: git-send-email 2.19.0.rc0.228.g281dcd1b4d0-goog In-Reply-To: References: MIME-Version: 1.0 Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds __force annotations for __user pointers casts detected by sparse with the -Wcast-from-as flag enabled (added in [1]). [1] https://github.com/lucvoo/sparse-dev/commit/5f960cb10f56ec2017c128ef9d16060e0145f292 Signed-off-by: Andrey Konovalov --- arch/arm64/include/asm/compat.h | 2 +- arch/arm64/include/asm/uaccess.h | 4 +-- arch/arm64/kernel/perf_callchain.c | 4 +-- arch/arm64/kernel/signal.c | 16 +++++----- arch/arm64/kernel/signal32.c | 6 ++-- arch/arm64/mm/fault.c | 2 +- block/compat_ioctl.c | 15 +++++---- drivers/ata/libata-scsi.c | 2 +- drivers/block/loop.c | 2 +- drivers/gpio/gpiolib.c | 8 +++-- drivers/input/evdev.c | 2 +- drivers/media/dvb-core/dvb_frontend.c | 3 +- drivers/media/v4l2-core/v4l2-compat-ioctl32.c | 9 +++--- drivers/mmc/core/block.c | 6 ++-- drivers/mtd/mtdchar.c | 2 +- drivers/net/tap.c | 2 +- drivers/net/tun.c | 2 +- drivers/spi/spidev.c | 6 ++-- drivers/tty/tty_ioctl.c | 3 +- drivers/tty/vt/vt_ioctl.c | 5 +-- drivers/usb/core/devio.c | 8 +++-- drivers/vfio/vfio.c | 6 ++-- drivers/video/fbdev/core/fbmem.c | 4 +-- drivers/xen/gntdev.c | 6 ++-- drivers/xen/privcmd.c | 4 +-- fs/aio.c | 2 +- fs/autofs/dev-ioctl.c | 3 +- fs/autofs/root.c | 2 +- fs/binfmt_elf.c | 10 +++--- fs/btrfs/ioctl.c | 2 +- fs/compat_ioctl.c | 32 ++++++++++--------- fs/ext2/ioctl.c | 2 +- fs/ext4/ioctl.c | 2 +- fs/fat/file.c | 3 +- fs/fuse/file.c | 2 +- fs/namespace.c | 2 +- fs/readdir.c | 4 +-- fs/signalfd.c | 10 +++--- include/linux/mm.h | 2 +- include/linux/pagemap.h | 8 ++--- include/linux/socket.h | 2 +- ipc/shm.c | 4 +-- kernel/futex.c | 6 ++-- kernel/futex_compat.c | 2 +- kernel/power/user.c | 2 +- kernel/signal.c | 2 +- lib/iov_iter.c | 16 +++++----- lib/strncpy_from_user.c | 2 +- lib/strnlen_user.c | 4 +-- lib/test_kasan.c | 2 +- mm/memory.c | 2 +- mm/migrate.c | 4 +-- mm/process_vm_access.c | 13 ++++---- net/bluetooth/hidp/sock.c | 2 +- net/compat.c | 12 ++++--- sound/core/control_compat.c | 5 +-- sound/core/pcm_native.c | 5 +-- sound/core/timer_compat.c | 3 +- 58 files changed, 163 insertions(+), 140 deletions(-) diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h index 1a037b94eba1..66e023fcea0a 100644 --- a/arch/arm64/include/asm/compat.h +++ b/arch/arm64/include/asm/compat.h @@ -155,7 +155,7 @@ static inline void __user *compat_ptr(compat_uptr_t uptr) static inline compat_uptr_t ptr_to_compat(void __user *uptr) { - return (u32)(unsigned long)uptr; + return (u32)(__force unsigned long)uptr; } #define compat_user_stack_pointer() (user_stack_pointer(task_pt_regs(current))) diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h index fa7318d3d7d5..9b22c0be5c0b 100644 --- a/arch/arm64/include/asm/uaccess.h +++ b/arch/arm64/include/asm/uaccess.h @@ -76,7 +76,7 @@ static inline unsigned long __range_ok(const void __user *addr, unsigned long si { unsigned long ret, limit = current_thread_info()->addr_limit; - __chk_user_ptr(addr); + __chk_user_ptr((void __force *)addr); asm volatile( // A + B <= C + 1 for all A,B,C, in four easy steps: // 1: X = A + B; X' = X % 2^64 @@ -103,7 +103,7 @@ static inline unsigned long __range_ok(const void __user *addr, unsigned long si * pass on to access_ok(), for instance. */ #define untagged_addr(addr) \ - ((__typeof__(addr))sign_extend64((__u64)(addr), 55)) + ((__typeof__(addr))sign_extend64((__force __u64)(addr), 55)) #define access_ok(type, addr, size) \ __range_ok(untagged_addr(addr), size) diff --git a/arch/arm64/kernel/perf_callchain.c b/arch/arm64/kernel/perf_callchain.c index bcafd7dcfe8b..e2d781b9e7ea 100644 --- a/arch/arm64/kernel/perf_callchain.c +++ b/arch/arm64/kernel/perf_callchain.c @@ -123,7 +123,7 @@ void perf_callchain_user(struct perf_callchain_entry_ctx *entry, tail = (struct frame_tail __user *)regs->regs[29]; while (entry->nr < entry->max_stack && - tail && !((unsigned long)tail & 0xf)) + tail && !((__force unsigned long)tail & 0xf)) tail = user_backtrace(tail, entry); } else { #ifdef CONFIG_COMPAT @@ -133,7 +133,7 @@ void perf_callchain_user(struct perf_callchain_entry_ctx *entry, tail = (struct compat_frame_tail __user *)regs->compat_fp - 1; while ((entry->nr < entry->max_stack) && - tail && !((unsigned long)tail & 0x3)) + tail && !((__force unsigned long)tail & 0x3)) tail = compat_user_backtrace(tail, entry); #endif } diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c index 5dcc942906db..da67d0bd1628 100644 --- a/arch/arm64/kernel/signal.c +++ b/arch/arm64/kernel/signal.c @@ -351,7 +351,7 @@ static int parse_user_sigframe(struct user_ctxs *user, user->fpsimd = NULL; user->sve = NULL; - if (!IS_ALIGNED((unsigned long)base, 16)) + if (!IS_ALIGNED((__force unsigned long)base, 16)) goto invalid; while (1) { @@ -450,7 +450,7 @@ static int parse_user_sigframe(struct user_ctxs *user, have_extra_context = true; base = (__force void __user *)extra_datap; - if (!IS_ALIGNED((unsigned long)base, 16)) + if (!IS_ALIGNED((__force unsigned long)base, 16)) goto invalid; if (!IS_ALIGNED(extra_size, 16)) @@ -742,16 +742,16 @@ static void setup_return(struct pt_regs *regs, struct k_sigaction *ka, __sigrestore_t sigtramp; regs->regs[0] = usig; - regs->sp = (unsigned long)user->sigframe; - regs->regs[29] = (unsigned long)&user->next_frame->fp; - regs->pc = (unsigned long)ka->sa.sa_handler; + regs->sp = (__force unsigned long)user->sigframe; + regs->regs[29] = (__force unsigned long)&user->next_frame->fp; + regs->pc = (__force unsigned long)ka->sa.sa_handler; if (ka->sa.sa_flags & SA_RESTORER) sigtramp = ka->sa.sa_restorer; else sigtramp = VDSO_SYMBOL(current->mm->context.vdso, sigtramp); - regs->regs[30] = (unsigned long)sigtramp; + regs->regs[30] = (__force unsigned long)sigtramp; } static int setup_rt_frame(int usig, struct ksignal *ksig, sigset_t *set, @@ -777,8 +777,8 @@ static int setup_rt_frame(int usig, struct ksignal *ksig, sigset_t *set, setup_return(regs, &ksig->ka, &user, usig); if (ksig->ka.sa.sa_flags & SA_SIGINFO) { err |= copy_siginfo_to_user(&frame->info, &ksig->info); - regs->regs[1] = (unsigned long)&frame->info; - regs->regs[2] = (unsigned long)&frame->uc; + regs->regs[1] = (__force unsigned long)&frame->info; + regs->regs[2] = (__force unsigned long)&frame->uc; } } diff --git a/arch/arm64/kernel/signal32.c b/arch/arm64/kernel/signal32.c index 24b09003f821..184178a552d6 100644 --- a/arch/arm64/kernel/signal32.c +++ b/arch/arm64/kernel/signal32.c @@ -483,8 +483,10 @@ int compat_setup_rt_frame(int usig, struct ksignal *ksig, if (err == 0) { compat_setup_return(regs, &ksig->ka, frame->sig.retcode, frame, usig); - regs->regs[1] = (compat_ulong_t)(unsigned long)&frame->info; - regs->regs[2] = (compat_ulong_t)(unsigned long)&frame->sig.uc; + regs->regs[1] = + (compat_ulong_t)(__force unsigned long)&frame->info; + regs->regs[2] = + (compat_ulong_t)(__force unsigned long)&frame->sig.uc; } return err; diff --git a/arch/arm64/mm/fault.c b/arch/arm64/mm/fault.c index 871fb3c38b23..0978b838f46e 100644 --- a/arch/arm64/mm/fault.c +++ b/arch/arm64/mm/fault.c @@ -299,7 +299,7 @@ static void __do_kernel_fault(unsigned long addr, unsigned int esr, static void __do_user_fault(struct siginfo *info, unsigned int esr) { - current->thread.fault_address = (unsigned long)info->si_addr; + current->thread.fault_address = (__force unsigned long)info->si_addr; /* * If the faulting address is in the kernel, we must sanitize the ESR. diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c index 6ca015f92766..35aa46e0e289 100644 --- a/block/compat_ioctl.c +++ b/block/compat_ioctl.c @@ -85,7 +85,7 @@ static int compat_hdio_ioctl(struct block_device *bdev, fmode_t mode, p = compat_alloc_user_space(sizeof(unsigned long)); error = __blkdev_driver_ioctl(bdev, mode, - cmd, (unsigned long)p); + cmd, (__force unsigned long)p); if (error == 0) { unsigned int __user *uvp = compat_ptr(arg); unsigned long v; @@ -138,7 +138,7 @@ static int compat_cdrom_read_audio(struct block_device *bdev, fmode_t mode, return -EFAULT; return __blkdev_driver_ioctl(bdev, mode, cmd, - (unsigned long)cdread_audio); + (__force unsigned long)cdread_audio); } static int compat_cdrom_generic_command(struct block_device *bdev, fmode_t mode, @@ -170,7 +170,8 @@ static int compat_cdrom_generic_command(struct block_device *bdev, fmode_t mode, put_user(compat_ptr(data), &cgc->reserved[0])) return -EFAULT; - return __blkdev_driver_ioctl(bdev, mode, cmd, (unsigned long)cgc); + return __blkdev_driver_ioctl(bdev, mode, cmd, + (__force unsigned long)cgc); } struct compat_blkpg_ioctl_arg { @@ -199,7 +200,7 @@ static int compat_blkpg_ioctl(struct block_device *bdev, fmode_t mode, if (err) return err; - return blkdev_ioctl(bdev, mode, cmd, (unsigned long)a); + return blkdev_ioctl(bdev, mode, cmd, (__force unsigned long)a); } #define BLKBSZGET_32 _IOR(0x12, 112, int) @@ -276,7 +277,7 @@ static int compat_blkdev_driver_ioctl(struct block_device *bdev, fmode_t mode, case DVD_READ_STRUCT: case DVD_WRITE_STRUCT: case DVD_AUTH: - arg = (unsigned long)compat_ptr(arg); + arg = (__force unsigned long)compat_ptr(arg); /* These intepret arg as an unsigned long, not as a pointer, * so we must not do compat_ptr() conversion. */ case HDIO_SET_MULTCOUNT: @@ -355,10 +356,10 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg) */ case BLKRRPART: return blkdev_ioctl(bdev, mode, cmd, - (unsigned long)compat_ptr(arg)); + (__force unsigned long)compat_ptr(arg)); case BLKBSZSET_32: return blkdev_ioctl(bdev, mode, BLKBSZSET, - (unsigned long)compat_ptr(arg)); + (__force unsigned long)compat_ptr(arg)); case BLKPG: return compat_blkpg_ioctl(bdev, mode, cmd, compat_ptr(arg)); case BLKRAGET: diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 1984fc78c750..9d4528ec8b43 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -792,7 +792,7 @@ int ata_sas_scsi_ioctl(struct ata_port *ap, struct scsi_device *scsidev, return put_user(val, (unsigned long __user *)arg); case HDIO_SET_32BIT: - val = (unsigned long) arg; + val = (__force unsigned long) arg; rc = 0; spin_lock_irqsave(ap->lock, flags); if (ap->pflags & ATA_PFLAG_PIO32CHANGE) { diff --git a/drivers/block/loop.c b/drivers/block/loop.c index ea9debf59b22..910f7910ab12 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -1608,7 +1608,7 @@ static int lo_compat_ioctl(struct block_device *bdev, fmode_t mode, case LOOP_CLR_FD: case LOOP_GET_STATUS64: case LOOP_SET_STATUS64: - arg = (unsigned long) compat_ptr(arg); + arg = (__force unsigned long) compat_ptr(arg); /* fall through */ case LOOP_SET_FD: case LOOP_CHANGE_FD: diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index e8f8a1999393..1f678dffe159 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -477,7 +477,8 @@ static long linehandle_ioctl(struct file *filep, unsigned int cmd, static long linehandle_ioctl_compat(struct file *filep, unsigned int cmd, unsigned long arg) { - return linehandle_ioctl(filep, cmd, (unsigned long)compat_ptr(arg)); + return linehandle_ioctl(filep, cmd, + (__force unsigned long)compat_ptr(arg)); } #endif @@ -792,7 +793,8 @@ static long lineevent_ioctl(struct file *filep, unsigned int cmd, static long lineevent_ioctl_compat(struct file *filep, unsigned int cmd, unsigned long arg) { - return lineevent_ioctl(filep, cmd, (unsigned long)compat_ptr(arg)); + return lineevent_ioctl(filep, cmd, + (__force unsigned long)compat_ptr(arg)); } #endif @@ -1091,7 +1093,7 @@ static long gpio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) static long gpio_ioctl_compat(struct file *filp, unsigned int cmd, unsigned long arg) { - return gpio_ioctl(filp, cmd, (unsigned long)compat_ptr(arg)); + return gpio_ioctl(filp, cmd, (__force unsigned long)compat_ptr(arg)); } #endif diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index 370206f987f9..61947c834e01 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -1108,7 +1108,7 @@ static long evdev_do_ioctl(struct file *file, unsigned int cmd, return 0; case EVIOCRMFF: - return input_ff_erase(dev, (int)(unsigned long) p, file); + return input_ff_erase(dev, (int)(__force unsigned long)p, file); case EVIOCGEFFECTS: i = test_bit(EV_FF, dev->evbit) ? diff --git a/drivers/media/dvb-core/dvb_frontend.c b/drivers/media/dvb-core/dvb_frontend.c index c4e7ebfe4d29..ec97b26cbd72 100644 --- a/drivers/media/dvb-core/dvb_frontend.c +++ b/drivers/media/dvb-core/dvb_frontend.c @@ -2180,7 +2180,8 @@ static long dvb_frontend_compat_ioctl(struct file *file, unsigned int cmd, return err; } - return dvb_frontend_ioctl(file, cmd, (unsigned long)compat_ptr(arg)); + return dvb_frontend_ioctl(file, cmd, + (__force unsigned long)compat_ptr(arg)); } #endif diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c index 6481212fda77..97a4e84e2070 100644 --- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c +++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c @@ -505,7 +505,8 @@ static int get_v4l2_plane32(struct v4l2_plane __user *p64, break; case V4L2_MEMORY_USERPTR: if (get_user(p, &p32->m.userptr) || - put_user((unsigned long)compat_ptr(p), &p64->m.userptr)) + put_user((__force unsigned long)compat_ptr(p), + &p64->m.userptr)) return -EFAULT; break; case V4L2_MEMORY_DMABUF: @@ -657,7 +658,7 @@ static int get_v4l2_buffer32(struct v4l2_buffer __user *p64, compat_ulong_t userptr; if (get_user(userptr, &p32->m.userptr) || - put_user((unsigned long)compat_ptr(userptr), + put_user((__force unsigned long)compat_ptr(userptr), &p64->m.userptr)) return -EFAULT; break; @@ -1340,9 +1341,9 @@ static long do_video_ioctl(struct file *file, unsigned int cmd, unsigned long ar * Otherwise, it will pass the newly allocated @new_p64 argument. */ if (compatible_arg) - err = native_ioctl(file, cmd, (unsigned long)p32); + err = native_ioctl(file, cmd, (__force unsigned long)p32); else - err = native_ioctl(file, cmd, (unsigned long)new_p64); + err = native_ioctl(file, cmd, (__force unsigned long)new_p64); if (err == -ENOTTY) return err; diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index a0b9102c4c6e..eb2c21b55fe6 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -799,7 +799,8 @@ static int mmc_blk_ioctl(struct block_device *bdev, fmode_t mode, static int mmc_blk_compat_ioctl(struct block_device *bdev, fmode_t mode, unsigned int cmd, unsigned long arg) { - return mmc_blk_ioctl(bdev, mode, cmd, (unsigned long) compat_ptr(arg)); + return mmc_blk_ioctl(bdev, mode, cmd, + (__force unsigned long) compat_ptr(arg)); } #endif @@ -2491,7 +2492,8 @@ static long mmc_rpmb_ioctl(struct file *filp, unsigned int cmd, static long mmc_rpmb_ioctl_compat(struct file *filp, unsigned int cmd, unsigned long arg) { - return mmc_rpmb_ioctl(filp, cmd, (unsigned long)compat_ptr(arg)); + return mmc_rpmb_ioctl(filp, cmd, + (__force unsigned long)compat_ptr(arg)); } #endif diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 02389528f622..d493647821d5 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -1090,7 +1090,7 @@ static long mtdchar_compat_ioctl(struct file *file, unsigned int cmd, } default: - ret = mtdchar_ioctl(file, cmd, (unsigned long)argp); + ret = mtdchar_ioctl(file, cmd, (__force unsigned long)argp); } mutex_unlock(&mtd_mutex); diff --git a/drivers/net/tap.c b/drivers/net/tap.c index f0f7cd977667..eb710bc2d19d 100644 --- a/drivers/net/tap.c +++ b/drivers/net/tap.c @@ -1128,7 +1128,7 @@ static long tap_ioctl(struct file *file, unsigned int cmd, static long tap_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) { - return tap_ioctl(file, cmd, (unsigned long)compat_ptr(arg)); + return tap_ioctl(file, cmd, (__force unsigned long)compat_ptr(arg)); } #endif diff --git a/drivers/net/tun.c b/drivers/net/tun.c index ebd07ad82431..29be50de0d3d 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -3191,7 +3191,7 @@ static long tun_chr_compat_ioctl(struct file *file, case TUNSETSNDBUF: case SIOCGIFHWADDR: case SIOCSIFHWADDR: - arg = (unsigned long)compat_ptr(arg); + arg = (__force unsigned long)compat_ptr(arg); break; default: arg = (compat_ulong_t)arg; diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c index cda10719d1d1..d9a91676a406 100644 --- a/drivers/spi/spidev.c +++ b/drivers/spi/spidev.c @@ -524,8 +524,8 @@ spidev_compat_ioc_message(struct file *filp, unsigned int cmd, /* Convert buffer pointers */ for (n = 0; n < n_ioc; n++) { - ioc[n].rx_buf = (uintptr_t) compat_ptr(ioc[n].rx_buf); - ioc[n].tx_buf = (uintptr_t) compat_ptr(ioc[n].tx_buf); + ioc[n].rx_buf = (__force uintptr_t) compat_ptr(ioc[n].rx_buf); + ioc[n].tx_buf = (__force uintptr_t) compat_ptr(ioc[n].tx_buf); } /* translate to spi_message, execute */ @@ -546,7 +546,7 @@ spidev_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) && _IOC_DIR(cmd) == _IOC_WRITE) return spidev_compat_ioc_message(filp, cmd, arg); - return spidev_ioctl(filp, cmd, (unsigned long)compat_ptr(arg)); + return spidev_ioctl(filp, cmd, (__force unsigned long)compat_ptr(arg)); } #else #define spidev_compat_ioctl NULL diff --git a/drivers/tty/tty_ioctl.c b/drivers/tty/tty_ioctl.c index d99fec44036c..5abd148bb459 100644 --- a/drivers/tty/tty_ioctl.c +++ b/drivers/tty/tty_ioctl.c @@ -949,7 +949,8 @@ long n_tty_compat_ioctl_helper(struct tty_struct *tty, struct file *file, switch (cmd) { case TIOCGLCKTRMIOS: case TIOCSLCKTRMIOS: - return tty_mode_ioctl(tty, file, cmd, (unsigned long) compat_ptr(arg)); + return tty_mode_ioctl(tty, file, cmd, + (__force unsigned long) compat_ptr(arg)); default: return -ENOIOCTLCMD; } diff --git a/drivers/tty/vt/vt_ioctl.c b/drivers/tty/vt/vt_ioctl.c index a78ad10a119b..794445d10965 100644 --- a/drivers/tty/vt/vt_ioctl.c +++ b/drivers/tty/vt/vt_ioctl.c @@ -1132,7 +1132,8 @@ compat_kdfontop_ioctl(struct compat_console_font_op __user *fontop, i = con_font_op(vc, op); if (i) return i; - ((struct compat_console_font_op *)op)->data = (unsigned long)op->data; + ((struct compat_console_font_op *)op)->data = + (__force unsigned long)op->data; if (copy_to_user(fontop, op, sizeof(struct compat_console_font_op))) return -EFAULT; return 0; @@ -1239,7 +1240,7 @@ long vt_compat_ioctl(struct tty_struct *tty, * but we have to convert it to a proper 64 bit pointer. */ default: - arg = (unsigned long)compat_ptr(arg); + arg = (__force unsigned long)compat_ptr(arg); goto fallback; } out: diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index ed5ab7c8100b..e2fd6ca2d7a3 100644 --- a/drivers/usb/core/devio.c +++ b/drivers/usb/core/devio.c @@ -1405,7 +1405,8 @@ find_memory_area(struct usb_dev_state *ps, const struct usbdevfs_urb *uurb) { struct usb_memory *usbm = NULL, *iter; unsigned long flags; - unsigned long uurb_start = (unsigned long)untagged_addr(uurb->buffer); + unsigned long uurb_start = + (__force unsigned long)untagged_addr(uurb->buffer); spin_lock_irqsave(&ps->lock, flags); list_for_each_entry(iter, &ps->memory_list, memlist) { @@ -1635,7 +1636,8 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb } else if (uurb->buffer_length > 0) { if (as->usbm) { unsigned long uurb_start = - (unsigned long)untagged_addr(uurb->buffer); + (__force unsigned long)untagged_addr( + uurb->buffer); as->urb->transfer_buffer = as->usbm->mem + (uurb_start - as->usbm->vm_start); @@ -1715,7 +1717,7 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb as->userurb = arg; if (as->usbm) { unsigned long uurb_start = - (unsigned long)untagged_addr(uurb->buffer); + (__force unsigned long)untagged_addr(uurb->buffer); as->urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; as->urb->transfer_dma = as->usbm->dma_handle + diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c index 64833879f75d..8f69175eba0e 100644 --- a/drivers/vfio/vfio.c +++ b/drivers/vfio/vfio.c @@ -1204,7 +1204,7 @@ static long vfio_fops_unl_ioctl(struct file *filep, static long vfio_fops_compat_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) { - arg = (unsigned long)compat_ptr(arg); + arg = (__force unsigned long)compat_ptr(arg); return vfio_fops_unl_ioctl(filep, cmd, arg); } #endif /* CONFIG_COMPAT */ @@ -1576,7 +1576,7 @@ static long vfio_group_fops_unl_ioctl(struct file *filep, static long vfio_group_fops_compat_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) { - arg = (unsigned long)compat_ptr(arg); + arg = (__force unsigned long)compat_ptr(arg); return vfio_group_fops_unl_ioctl(filep, cmd, arg); } #endif /* CONFIG_COMPAT */ @@ -1707,7 +1707,7 @@ static int vfio_device_fops_mmap(struct file *filep, struct vm_area_struct *vma) static long vfio_device_fops_compat_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) { - arg = (unsigned long)compat_ptr(arg); + arg = (__force unsigned long)compat_ptr(arg); return vfio_device_fops_unl_ioctl(filep, cmd, arg); } #endif /* CONFIG_COMPAT */ diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c index 20405421a5ed..a267f41378c9 100644 --- a/drivers/video/fbdev/core/fbmem.c +++ b/drivers/video/fbdev/core/fbmem.c @@ -1274,7 +1274,7 @@ static int fb_getput_cmap(struct fb_info *info, unsigned int cmd, put_user(compat_ptr(data), &cmap->transp)) return -EFAULT; - err = do_fb_ioctl(info, cmd, (unsigned long) cmap); + err = do_fb_ioctl(info, cmd, (__force unsigned long) cmap); if (!err) { if (copy_in_user(&cmap32->start, @@ -1346,7 +1346,7 @@ static long fb_compat_ioctl(struct file *file, unsigned int cmd, case FBIOPAN_DISPLAY: case FBIOGET_CON2FBMAP: case FBIOPUT_CON2FBMAP: - arg = (unsigned long) compat_ptr(arg); + arg = (__force unsigned long) compat_ptr(arg); /* fall through */ case FBIOBLANK: ret = do_fb_ioctl(info, cmd, arg); diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c index 57390c7666e5..fc5f60935f92 100644 --- a/drivers/xen/gntdev.c +++ b/drivers/xen/gntdev.c @@ -843,7 +843,7 @@ struct gntdev_copy_batch { static int gntdev_get_page(struct gntdev_copy_batch *batch, void __user *virt, bool writeable, unsigned long *gfn) { - unsigned long addr = (unsigned long)virt; + unsigned long addr = (__force unsigned long)virt; struct page *page; unsigned long xen_pfn; int ret; @@ -953,7 +953,7 @@ static int gntdev_grant_copy_seg(struct gntdev_copy_batch *batch, op->flags |= GNTCOPY_source_gref; } else { virt = seg->source.virt + copied; - off = (unsigned long)virt & ~XEN_PAGE_MASK; + off = (__force unsigned long)virt & ~XEN_PAGE_MASK; len = min(len, (size_t)XEN_PAGE_SIZE - off); ret = gntdev_get_page(batch, virt, false, &gfn); @@ -972,7 +972,7 @@ static int gntdev_grant_copy_seg(struct gntdev_copy_batch *batch, op->flags |= GNTCOPY_dest_gref; } else { virt = seg->dest.virt + copied; - off = (unsigned long)virt & ~XEN_PAGE_MASK; + off = (__force unsigned long)virt & ~XEN_PAGE_MASK; len = min(len, (size_t)XEN_PAGE_SIZE - off); ret = gntdev_get_page(batch, virt, true, &gfn); diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c index 7e6e682104dc..d4b5dab8a80f 100644 --- a/drivers/xen/privcmd.c +++ b/drivers/xen/privcmd.c @@ -558,7 +558,7 @@ static long privcmd_ioctl_mmap_batch( if (state.global_error) { /* Write back errors in second pass. */ - state.user_gfn = (xen_pfn_t *)m.arr; + state.user_gfn = (xen_pfn_t __user *)m.arr; state.user_err = m.err; ret = traverse_pages_block(m.num, sizeof(xen_pfn_t), &pagelist, mmap_return_errors, &state); @@ -596,7 +596,7 @@ static int lock_pages( return -ENOSPC; pinned = get_user_pages_fast( - (unsigned long) kbufs[i].uptr, + (__force unsigned long) kbufs[i].uptr, requested, FOLL_WRITE, pages); if (pinned < 0) return pinned; diff --git a/fs/aio.c b/fs/aio.c index b9350f3360c6..bcf431f3e029 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -1084,7 +1084,7 @@ static void aio_complete(struct aio_kiocb *iocb, long res, long res2) ev_page = kmap_atomic(ctx->ring_pages[pos / AIO_EVENTS_PER_PAGE]); event = ev_page + pos % AIO_EVENTS_PER_PAGE; - event->obj = (u64)(unsigned long)iocb->ki_user_iocb; + event->obj = (u64)(__force unsigned long)iocb->ki_user_iocb; event->data = iocb->ki_user_data; event->res = res; event->res2 = res2; diff --git a/fs/autofs/dev-ioctl.c b/fs/autofs/dev-ioctl.c index 86eafda4a652..f30c7dfec42b 100644 --- a/fs/autofs/dev-ioctl.c +++ b/fs/autofs/dev-ioctl.c @@ -709,7 +709,8 @@ static long autofs_dev_ioctl(struct file *file, unsigned int command, static long autofs_dev_ioctl_compat(struct file *file, unsigned int command, unsigned long u) { - return autofs_dev_ioctl(file, command, (unsigned long) compat_ptr(u)); + return autofs_dev_ioctl(file, command, + (__force unsigned long) compat_ptr(u)); } #else #define autofs_dev_ioctl_compat NULL diff --git a/fs/autofs/root.c b/fs/autofs/root.c index 782e57b911ab..c8ebdeab6708 100644 --- a/fs/autofs/root.c +++ b/fs/autofs/root.c @@ -956,7 +956,7 @@ static long autofs_root_compat_ioctl(struct file *filp, ret = autofs_root_ioctl_unlocked(inode, filp, cmd, arg); else ret = autofs_root_ioctl_unlocked(inode, filp, cmd, - (unsigned long) compat_ptr(arg)); + (__force unsigned long) compat_ptr(arg)); return ret; } diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index efae2fb0930a..0292555d19a4 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -258,18 +258,18 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec, NEW_AUX_ENT(AT_GID, from_kgid_munged(cred->user_ns, cred->gid)); NEW_AUX_ENT(AT_EGID, from_kgid_munged(cred->user_ns, cred->egid)); NEW_AUX_ENT(AT_SECURE, bprm->secureexec); - NEW_AUX_ENT(AT_RANDOM, (elf_addr_t)(unsigned long)u_rand_bytes); + NEW_AUX_ENT(AT_RANDOM, (elf_addr_t)(__force unsigned long)u_rand_bytes); #ifdef ELF_HWCAP2 NEW_AUX_ENT(AT_HWCAP2, ELF_HWCAP2); #endif NEW_AUX_ENT(AT_EXECFN, bprm->exec); if (k_platform) { NEW_AUX_ENT(AT_PLATFORM, - (elf_addr_t)(unsigned long)u_platform); + (elf_addr_t)(__force unsigned long)u_platform); } if (k_base_platform) { NEW_AUX_ENT(AT_BASE_PLATFORM, - (elf_addr_t)(unsigned long)u_base_platform); + (elf_addr_t)(__force unsigned long)u_base_platform); } if (bprm->interp_flags & BINPRM_FLAGS_EXECFD) { NEW_AUX_ENT(AT_EXECFD, bprm->interp_data); @@ -285,12 +285,12 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec, sp = STACK_ADD(p, ei_index); items = (argc + 1) + (envc + 1) + 1; - bprm->p = STACK_ROUND(sp, items); + bprm->p = STACK_ROUND((__force unsigned long)sp, items); /* Point sp at the lowest address on the stack */ #ifdef CONFIG_STACK_GROWSUP sp = (elf_addr_t __user *)bprm->p - items - ei_index; - bprm->exec = (unsigned long)sp; /* XXX: PARISC HACK */ + bprm->exec = (__force unsigned long)sp; /* XXX: PARISC HACK */ #else sp = (elf_addr_t __user *)bprm->p; #endif diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 63600dc2ac4c..da884159b169 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -5971,6 +5971,6 @@ long btrfs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) break; } - return btrfs_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); + return btrfs_ioctl(file, cmd, (__force unsigned long) compat_ptr(arg)); } #endif diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c index a9b00942e87d..675a5e862a68 100644 --- a/fs/compat_ioctl.c +++ b/fs/compat_ioctl.c @@ -152,7 +152,7 @@ static int do_video_get_event(struct file *file, if (kevent == NULL) return -EFAULT; - err = do_ioctl(file, cmd, (unsigned long)kevent); + err = do_ioctl(file, cmd, (__force unsigned long)kevent); if (!err) { err = convert_in_user(&kevent->type, &up->type); err |= convert_in_user(&kevent->timestamp, &up->timestamp); @@ -193,7 +193,7 @@ static int do_video_stillpicture(struct file *file, if (err) return -EFAULT; - err = do_ioctl(file, cmd, (unsigned long) up_native); + err = do_ioctl(file, cmd, (__force unsigned long) up_native); return err; } @@ -264,7 +264,7 @@ static int sg_ioctl_trans(struct file *file, unsigned int cmd, if (get_user(interface_id, &sgio32->interface_id)) return -EFAULT; if (interface_id != 'S') - return do_ioctl(file, cmd, (unsigned long)sgio32); + return do_ioctl(file, cmd, (__force unsigned long)sgio32); if (get_user(iovec_count, &sgio32->iovec_count)) return -EFAULT; @@ -324,7 +324,7 @@ static int sg_ioctl_trans(struct file *file, unsigned int cmd, if (put_user(compat_ptr(data), &sgio->usr_ptr)) return -EFAULT; - err = do_ioctl(file, cmd, (unsigned long) sgio); + err = do_ioctl(file, cmd, (__force unsigned long) sgio); if (err >= 0) { void __user *datap; @@ -332,7 +332,7 @@ static int sg_ioctl_trans(struct file *file, unsigned int cmd, if (copy_in_user(&sgio32->pack_id, &sgio->pack_id, sizeof(int)) || get_user(datap, &sgio->usr_ptr) || - put_user((u32)(unsigned long)datap, + put_user((u32)(__force unsigned long)datap, &sgio32->usr_ptr) || copy_in_user(&sgio32->status, &sgio->status, (4 * sizeof(unsigned char)) + @@ -361,7 +361,7 @@ static int sg_grt_trans(struct file *file, int err, i; sg_req_info_t __user *r; r = compat_alloc_user_space(sizeof(sg_req_info_t)*SG_MAX_QUEUE); - err = do_ioctl(file, cmd, (unsigned long)r); + err = do_ioctl(file, cmd, (__force unsigned long)r); if (err < 0) return err; for (i = 0; i < SG_MAX_QUEUE; i++) { @@ -371,7 +371,7 @@ static int sg_grt_trans(struct file *file, if (copy_in_user(o + i, r + i, offsetof(sg_req_info_t, usr_ptr)) || get_user(ptr, &r[i].usr_ptr) || get_user(d, &r[i].duration) || - put_user((u32)(unsigned long)(ptr), &o[i].usr_ptr) || + put_user((u32)(__force unsigned long)(ptr), &o[i].usr_ptr) || put_user(d, &o[i].duration)) return -EFAULT; } @@ -410,7 +410,7 @@ static int ppp_sock_fprog_ioctl_trans(struct file *file, else cmd = PPPIOCSACTIVE; - return do_ioctl(file, cmd, (unsigned long) u_fprog64); + return do_ioctl(file, cmd, (__force unsigned long) u_fprog64); } struct ppp_option_data32 { @@ -435,7 +435,7 @@ static int ppp_gidle(struct file *file, unsigned int cmd, idle = compat_alloc_user_space(sizeof(*idle)); - err = do_ioctl(file, PPPIOCGIDLE, (unsigned long) idle); + err = do_ioctl(file, PPPIOCGIDLE, (__force unsigned long) idle); if (!err) { if (get_user(xmit, &idle->xmit_idle) || @@ -467,7 +467,7 @@ static int ppp_scompress(struct file *file, unsigned int cmd, sizeof(__u32) + sizeof(int))) return -EFAULT; - return do_ioctl(file, PPPIOCSCOMPRESS, (unsigned long) odata); + return do_ioctl(file, PPPIOCSCOMPRESS, (__force unsigned long) odata); } #ifdef CONFIG_BLOCK @@ -607,7 +607,7 @@ static int serial_struct_ioctl(struct file *file, put_user(0UL, &ss->iomap_base)) return -EFAULT; } - err = do_ioctl(file, cmd, (unsigned long)ss); + err = do_ioctl(file, cmd, (__force unsigned long)ss); if (cmd == TIOCGSERIAL && err >= 0) { if (copy_in_user(ss32, ss, offsetof(SS32, iomem_base)) || get_user(iomem_base, &ss->iomem_base)) @@ -641,14 +641,16 @@ static int rtc_ioctl(struct file *file, case RTC_EPOCH_READ32: ret = do_ioctl(file, (cmd == RTC_IRQP_READ32) ? RTC_IRQP_READ : RTC_EPOCH_READ, - (unsigned long)valp); + (__force unsigned long)valp); if (ret) return ret; return convert_in_user(valp, (unsigned int __user *)argp); case RTC_IRQP_SET32: - return do_ioctl(file, RTC_IRQP_SET, (unsigned long)argp); + return do_ioctl(file, RTC_IRQP_SET, + (__force unsigned long)argp); case RTC_EPOCH_SET32: - return do_ioctl(file, RTC_EPOCH_SET, (unsigned long)argp); + return do_ioctl(file, RTC_EPOCH_SET, + (__force unsigned long)argp); } return -ENOIOCTLCMD; @@ -1436,7 +1438,7 @@ COMPAT_SYSCALL_DEFINE3(ioctl, unsigned int, fd, unsigned int, cmd, goto out_fput; found_handler: - arg = (unsigned long)compat_ptr(arg); + arg = (__force unsigned long)compat_ptr(arg); do_ioctl: error = do_vfs_ioctl(f.file, fd, cmd, arg); out_fput: diff --git a/fs/ext2/ioctl.c b/fs/ext2/ioctl.c index 0367c0039e68..5cf6e2666107 100644 --- a/fs/ext2/ioctl.c +++ b/fs/ext2/ioctl.c @@ -183,6 +183,6 @@ long ext2_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) default: return -ENOIOCTLCMD; } - return ext2_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); + return ext2_ioctl(file, cmd, (__force unsigned long) compat_ptr(arg)); } #endif diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index a7074115d6f6..02c9ffbbb209 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -1107,6 +1107,6 @@ long ext4_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) default: return -ENOIOCTLCMD; } - return ext4_ioctl(file, cmd, (unsigned long) compat_ptr(arg)); + return ext4_ioctl(file, cmd, (__force unsigned long) compat_ptr(arg)); } #endif diff --git a/fs/fat/file.c b/fs/fat/file.c index 4f3d72fb1e60..88f267d5042f 100644 --- a/fs/fat/file.c +++ b/fs/fat/file.c @@ -176,7 +176,8 @@ static long fat_generic_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) { - return fat_generic_ioctl(filp, cmd, (unsigned long)compat_ptr(arg)); + return fat_generic_ioctl(filp, cmd, + (__force unsigned long)compat_ptr(arg)); } #endif diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 32d0b883e74f..4c0ccfeb2e24 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -1255,7 +1255,7 @@ static inline void fuse_page_descs_length_init(struct fuse_req *req, static inline unsigned long fuse_get_user_addr(const struct iov_iter *ii) { - return (unsigned long)ii->iov->iov_base + ii->iov_offset; + return (__force unsigned long)ii->iov->iov_base + ii->iov_offset; } static inline size_t fuse_get_frag_size(const struct iov_iter *ii, diff --git a/fs/namespace.c b/fs/namespace.c index 51f763fb9430..8307bd0399f3 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -2672,7 +2672,7 @@ void *copy_mount_options(const void __user * data) * the remainder of the page. */ /* copy_from_user cannot cross TASK_SIZE ! */ - size = TASK_SIZE - (unsigned long)untagged_addr(data); + size = TASK_SIZE - (__force unsigned long)untagged_addr(data); if (size > PAGE_SIZE) size = PAGE_SIZE; diff --git a/fs/readdir.c b/fs/readdir.c index d97f548e6323..d5de36c3cc66 100644 --- a/fs/readdir.c +++ b/fs/readdir.c @@ -366,8 +366,8 @@ static int compat_fillonedir(struct dir_context *ctx, const char *name, buf->result++; dirent = buf->dirent; if (!access_ok(VERIFY_WRITE, dirent, - (unsigned long)(dirent->d_name + namlen + 1) - - (unsigned long)dirent)) + (__force unsigned long)(dirent->d_name + namlen + 1) - + (__force unsigned long)dirent)) goto efault; if ( __put_user(d_ino, &dirent->d_ino) || __put_user(offset, &dirent->d_offset) || diff --git a/fs/signalfd.c b/fs/signalfd.c index 4fcd1498acf5..23bc1d4d870a 100644 --- a/fs/signalfd.c +++ b/fs/signalfd.c @@ -105,7 +105,7 @@ static int signalfd_copyinfo(struct signalfd_siginfo __user *uinfo, case SIL_TIMER: new.ssi_tid = kinfo->si_tid; new.ssi_overrun = kinfo->si_overrun; - new.ssi_ptr = (long) kinfo->si_ptr; + new.ssi_ptr = (__force long) kinfo->si_ptr; new.ssi_int = kinfo->si_int; break; case SIL_POLL: @@ -122,13 +122,13 @@ static int signalfd_copyinfo(struct signalfd_siginfo __user *uinfo, * it as SIL_FAULT. */ case SIL_FAULT: - new.ssi_addr = (long) kinfo->si_addr; + new.ssi_addr = (__force long) kinfo->si_addr; #ifdef __ARCH_SI_TRAPNO new.ssi_trapno = kinfo->si_trapno; #endif break; case SIL_FAULT_MCEERR: - new.ssi_addr = (long) kinfo->si_addr; + new.ssi_addr = (__force long) kinfo->si_addr; #ifdef __ARCH_SI_TRAPNO new.ssi_trapno = kinfo->si_trapno; #endif @@ -147,11 +147,11 @@ static int signalfd_copyinfo(struct signalfd_siginfo __user *uinfo, */ new.ssi_pid = kinfo->si_pid; new.ssi_uid = kinfo->si_uid; - new.ssi_ptr = (long) kinfo->si_ptr; + new.ssi_ptr = (__force long) kinfo->si_ptr; new.ssi_int = kinfo->si_int; break; case SIL_SYS: - new.ssi_call_addr = (long) kinfo->si_call_addr; + new.ssi_call_addr = (__force long) kinfo->si_call_addr; new.ssi_syscall = kinfo->si_syscall; new.ssi_arch = kinfo->si_arch; break; diff --git a/include/linux/mm.h b/include/linux/mm.h index a61ebe8ad4ca..0cfd80983fea 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1297,7 +1297,7 @@ static inline void clear_page_pfmemalloc(struct page *page) */ extern void pagefault_out_of_memory(void); -#define offset_in_page(p) ((unsigned long)(p) & ~PAGE_MASK) +#define offset_in_page(p) ((__force unsigned long)(p) & ~PAGE_MASK) /* * Flags passed to show_mem() and show_free_areas() to suppress output in diff --git a/include/linux/pagemap.h b/include/linux/pagemap.h index b1bd2186e6d2..26d08d4ed59b 100644 --- a/include/linux/pagemap.h +++ b/include/linux/pagemap.h @@ -579,8 +579,8 @@ static inline int fault_in_pages_writeable(char __user *uaddr, int size) } while (uaddr <= end); /* Check whether the range spilled into the next page. */ - if (((unsigned long)uaddr & PAGE_MASK) == - ((unsigned long)end & PAGE_MASK)) + if (((__force unsigned long)uaddr & PAGE_MASK) == + ((__force unsigned long)end & PAGE_MASK)) return __put_user(0, end); return 0; @@ -604,8 +604,8 @@ static inline int fault_in_pages_readable(const char __user *uaddr, int size) } while (uaddr <= end); /* Check whether the range spilled into the next page. */ - if (((unsigned long)uaddr & PAGE_MASK) == - ((unsigned long)end & PAGE_MASK)) { + if (((__force unsigned long)uaddr & PAGE_MASK) == + ((__force unsigned long)end & PAGE_MASK)) { return __get_user(c, end); } diff --git a/include/linux/socket.h b/include/linux/socket.h index 7ed4713d5337..529f526bca1c 100644 --- a/include/linux/socket.h +++ b/include/linux/socket.h @@ -93,7 +93,7 @@ struct cmsghdr { #define CMSG_ALIGN(len) ( ((len)+sizeof(long)-1) & ~(sizeof(long)-1) ) -#define CMSG_DATA(cmsg) ((void *)((char *)(cmsg) + sizeof(struct cmsghdr))) +#define CMSG_DATA(cmsg) ((void *)((char __force *)(cmsg) + sizeof(struct cmsghdr))) #define CMSG_SPACE(len) (sizeof(struct cmsghdr) + CMSG_ALIGN(len)) #define CMSG_LEN(len) (sizeof(struct cmsghdr) + (len)) diff --git a/ipc/shm.c b/ipc/shm.c index b0eb3757ab89..310096ffe8c4 100644 --- a/ipc/shm.c +++ b/ipc/shm.c @@ -1392,7 +1392,7 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr, unsigned long shmlba) { struct shmid_kernel *shp; - unsigned long addr = (unsigned long)shmaddr; + unsigned long addr = (__force unsigned long)shmaddr; unsigned long size; struct file *file, *base; int err; @@ -1600,7 +1600,7 @@ long ksys_shmdt(char __user *shmaddr) { struct mm_struct *mm = current->mm; struct vm_area_struct *vma; - unsigned long addr = (unsigned long)shmaddr; + unsigned long addr = (__force unsigned long)shmaddr; int retval = -EINVAL; #ifdef CONFIG_MMU loff_t size = 0; diff --git a/kernel/futex.c b/kernel/futex.c index 11fc3bb456d6..8bb0858c795a 100644 --- a/kernel/futex.c +++ b/kernel/futex.c @@ -499,7 +499,7 @@ static void drop_futex_key_refs(union futex_key *key) static int get_futex_key(u32 __user *uaddr, int fshared, union futex_key *key, int rw) { - unsigned long address = (unsigned long)uaddr; + unsigned long address = (__force unsigned long)uaddr; struct mm_struct *mm = current->mm; struct page *page, *tail; struct address_space *mapping; @@ -727,7 +727,7 @@ static int fault_in_user_writeable(u32 __user *uaddr) int ret; down_read(&mm->mmap_sem); - ret = fixup_user_fault(current, mm, (unsigned long)uaddr, + ret = fixup_user_fault(current, mm, (__force unsigned long)uaddr, FAULT_FLAG_WRITE, NULL); up_read(&mm->mmap_sem); @@ -3584,7 +3584,7 @@ SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val, */ if (cmd == FUTEX_REQUEUE || cmd == FUTEX_CMP_REQUEUE || cmd == FUTEX_CMP_REQUEUE_PI || cmd == FUTEX_WAKE_OP) - val2 = (u32) (unsigned long) utime; + val2 = (u32) (__force unsigned long) utime; return do_futex(uaddr, op, val, tp, uaddr2, val2, val3); } diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c index 83f830acbb5f..b6052ae7b349 100644 --- a/kernel/futex_compat.c +++ b/kernel/futex_compat.c @@ -196,7 +196,7 @@ COMPAT_SYSCALL_DEFINE6(futex, u32 __user *, uaddr, int, op, u32, val, } if (cmd == FUTEX_REQUEUE || cmd == FUTEX_CMP_REQUEUE || cmd == FUTEX_CMP_REQUEUE_PI || cmd == FUTEX_WAKE_OP) - val2 = (int) (unsigned long) utime; + val2 = (int) (__force unsigned long) utime; return do_futex(uaddr, op, val, tp, uaddr2, val2, val3); } diff --git a/kernel/power/user.c b/kernel/power/user.c index 2d8b60a3c86b..10a578efc892 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c @@ -431,7 +431,7 @@ snapshot_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) case SNAPSHOT_CREATE_IMAGE: return snapshot_ioctl(file, cmd, - (unsigned long) compat_ptr(arg)); + (__force unsigned long) compat_ptr(arg)); case SNAPSHOT_SET_SWAP_AREA: { struct compat_resume_swap_area __user *u_swap_area = diff --git a/kernel/signal.c b/kernel/signal.c index 5843c541fda9..2bc6d7fdeaec 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -3494,7 +3494,7 @@ do_sigaltstack (const stack_t *ss, stack_t *oss, unsigned long sp) return -ENOMEM; } - t->sas_ss_sp = (unsigned long) ss_sp; + t->sas_ss_sp = (__force unsigned long) ss_sp; t->sas_ss_size = ss_size; t->sas_ss_flags = ss_flags; } diff --git a/lib/iov_iter.c b/lib/iov_iter.c index 8be175df3075..6b1f373d241d 100644 --- a/lib/iov_iter.c +++ b/lib/iov_iter.c @@ -1112,9 +1112,9 @@ unsigned long iov_iter_alignment(const struct iov_iter *i) return size; } iterate_all_kinds(i, size, v, - (res |= (unsigned long)v.iov_base | v.iov_len, 0), + (res |= (__force unsigned long)v.iov_base | v.iov_len, 0), res |= v.bv_offset | v.bv_len, - res |= (unsigned long)v.iov_base | v.iov_len + res |= (__force unsigned long)v.iov_base | v.iov_len ) return res; } @@ -1131,11 +1131,11 @@ unsigned long iov_iter_gap_alignment(const struct iov_iter *i) } iterate_all_kinds(i, size, v, - (res |= (!res ? 0 : (unsigned long)v.iov_base) | + (res |= (!res ? 0 : (__force unsigned long)v.iov_base) | (size != v.iov_len ? size : 0), 0), (res |= (!res ? 0 : (unsigned long)v.bv_offset) | (size != v.bv_len ? size : 0)), - (res |= (!res ? 0 : (unsigned long)v.iov_base) | + (res |= (!res ? 0 : (__force unsigned long)v.iov_base) | (size != v.iov_len ? size : 0)) ); return res; @@ -1196,7 +1196,7 @@ ssize_t iov_iter_get_pages(struct iov_iter *i, if (unlikely(i->type & ITER_PIPE)) return pipe_get_pages(i, pages, maxsize, maxpages, start); iterate_all_kinds(i, maxsize, v, ({ - unsigned long addr = (unsigned long)v.iov_base; + unsigned long addr = (__force unsigned long)v.iov_base; size_t len = v.iov_len + (*start = addr & (PAGE_SIZE - 1)); int n; int res; @@ -1273,7 +1273,7 @@ ssize_t iov_iter_get_pages_alloc(struct iov_iter *i, if (unlikely(i->type & ITER_PIPE)) return pipe_get_pages_alloc(i, pages, maxsize, start); iterate_all_kinds(i, maxsize, v, ({ - unsigned long addr = (unsigned long)v.iov_base; + unsigned long addr = (__force unsigned long)v.iov_base; size_t len = v.iov_len + (*start = addr & (PAGE_SIZE - 1)); int n; int res; @@ -1457,7 +1457,7 @@ int iov_iter_npages(const struct iov_iter *i, int maxpages) if (npages >= maxpages) return maxpages; } else iterate_all_kinds(i, size, v, ({ - unsigned long p = (unsigned long)v.iov_base; + unsigned long p = (__force unsigned long)v.iov_base; npages += DIV_ROUND_UP(p + v.iov_len, PAGE_SIZE) - p / PAGE_SIZE; if (npages >= maxpages) @@ -1467,7 +1467,7 @@ int iov_iter_npages(const struct iov_iter *i, int maxpages) if (npages >= maxpages) return maxpages; }),({ - unsigned long p = (unsigned long)v.iov_base; + unsigned long p = (__force unsigned long)v.iov_base; npages += DIV_ROUND_UP(p + v.iov_len, PAGE_SIZE) - p / PAGE_SIZE; if (npages >= maxpages) diff --git a/lib/strncpy_from_user.c b/lib/strncpy_from_user.c index 97467cd2bc59..2dc90838a594 100644 --- a/lib/strncpy_from_user.c +++ b/lib/strncpy_from_user.c @@ -109,7 +109,7 @@ long strncpy_from_user(char *dst, const char __user *src, long count) src = untagged_addr(src); max_addr = user_addr_max(); - src_addr = (unsigned long)src; + src_addr = (__force unsigned long)src; if (likely(src_addr < max_addr)) { unsigned long max = max_addr - src_addr; long retval; diff --git a/lib/strnlen_user.c b/lib/strnlen_user.c index 8b5f56466e00..10cc31f41064 100644 --- a/lib/strnlen_user.c +++ b/lib/strnlen_user.c @@ -42,7 +42,7 @@ static inline long do_strnlen_user(const char __user *src, unsigned long count, * Do everything aligned. But that means that we * need to also expand the maximum.. */ - align = (sizeof(long) - 1) & (unsigned long)src; + align = (sizeof(long) - 1) & (__force unsigned long)src; src -= align; max += align; @@ -111,7 +111,7 @@ long strnlen_user(const char __user *str, long count) str = untagged_addr(str); max_addr = user_addr_max(); - src_addr = (unsigned long)str; + src_addr = (__force unsigned long)str; if (likely(src_addr < max_addr)) { unsigned long max = max_addr - src_addr; long retval; diff --git a/lib/test_kasan.c b/lib/test_kasan.c index ec657105edbf..e6a6ad7cc054 100644 --- a/lib/test_kasan.c +++ b/lib/test_kasan.c @@ -476,7 +476,7 @@ static noinline void __init copy_user_test(void) pr_info("out-of-bounds in strncpy_from_user()\n"); unused = strncpy_from_user(kmem, usermem, size + 1); - vm_munmap((unsigned long)usermem, PAGE_SIZE); + vm_munmap((__force unsigned long)usermem, PAGE_SIZE); kfree(kmem); } diff --git a/mm/memory.c b/mm/memory.c index c467102a5cbc..eb7606ab3620 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -4728,7 +4728,7 @@ long copy_huge_page_from_user(struct page *dst_page, unsigned int pages_per_huge_page, bool allow_pagefault) { - void *src = (void *)usr_src; + void *src = (__force void *)usr_src; void *page_kaddr; unsigned long i, rc = 0; unsigned long ret_val = pages_per_huge_page * PAGE_SIZE; diff --git a/mm/migrate.c b/mm/migrate.c index d6a2e89b086a..9786b5f827cf 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1582,7 +1582,7 @@ static int do_pages_move(struct mm_struct *mm, nodemask_t task_nodes, goto out_flush; if (get_user(node, nodes + i)) goto out_flush; - addr = (unsigned long)p; + addr = (__force unsigned long)p; err = -ENODEV; if (node < 0 || node >= MAX_NUMNODES) @@ -1656,7 +1656,7 @@ static void do_pages_stat_array(struct mm_struct *mm, unsigned long nr_pages, down_read(&mm->mmap_sem); for (i = 0; i < nr_pages; i++) { - unsigned long addr = (unsigned long)(*pages); + unsigned long addr = (__force unsigned long)(*pages); struct vm_area_struct *vma; struct page *page; int err = -EFAULT; diff --git a/mm/process_vm_access.c b/mm/process_vm_access.c index a447092d4635..4a7a55f4614d 100644 --- a/mm/process_vm_access.c +++ b/mm/process_vm_access.c @@ -175,10 +175,10 @@ static ssize_t process_vm_rw_core(pid_t pid, struct iov_iter *iter, for (i = 0; i < riovcnt; i++) { iov_len = rvec[i].iov_len; if (iov_len > 0) { - nr_pages_iov = ((unsigned long)rvec[i].iov_base - + iov_len) - / PAGE_SIZE - (unsigned long)rvec[i].iov_base - / PAGE_SIZE + 1; + nr_pages_iov = ((__force unsigned long)rvec[i].iov_base + + iov_len) / PAGE_SIZE - + (__force unsigned long)rvec[i].iov_base + / PAGE_SIZE + 1; nr_pages = max(nr_pages, nr_pages_iov); } } @@ -218,8 +218,9 @@ static ssize_t process_vm_rw_core(pid_t pid, struct iov_iter *iter, for (i = 0; i < riovcnt && iov_iter_count(iter) && !rc; i++) rc = process_vm_rw_single_vec( - (unsigned long)rvec[i].iov_base, rvec[i].iov_len, - iter, process_pages, mm, task, vm_write); + (__force unsigned long)rvec[i].iov_base, + rvec[i].iov_len, iter, process_pages, mm, task, + vm_write); /* copied = space before - space after */ total_len -= iov_iter_count(iter); diff --git a/net/bluetooth/hidp/sock.c b/net/bluetooth/hidp/sock.c index 1eaac01f85de..a07dc6ad085f 100644 --- a/net/bluetooth/hidp/sock.c +++ b/net/bluetooth/hidp/sock.c @@ -185,7 +185,7 @@ static int hidp_sock_compat_ioctl(struct socket *sock, unsigned int cmd, unsigne copy_to_user(&uca->name[0], &ca.name[0], 128)) return -EFAULT; - arg = (unsigned long) uca; + arg = (__force unsigned long) uca; /* Fall through. We don't actually write back any _changes_ to the structure anyway, so there's no need to copy back diff --git a/net/compat.c b/net/compat.c index 3b2105f6549d..786c71c44f99 100644 --- a/net/compat.c +++ b/net/compat.c @@ -103,7 +103,7 @@ int get_compat_msghdr(struct msghdr *kmsg, ((ucmlen) >= sizeof(struct compat_cmsghdr) && \ (ucmlen) <= (unsigned long) \ ((mhdr)->msg_controllen - \ - ((char *)(ucmsg) - (char *)(mhdr)->msg_control))) + ((char __force *)(ucmsg) - (char __force *)(mhdr)->msg_control))) static inline struct compat_cmsghdr __user *cmsg_compat_nxthdr(struct msghdr *msg, struct compat_cmsghdr __user *cmsg, int cmsg_len) @@ -582,7 +582,7 @@ int compat_mc_setsockopt(struct sock *sock, int level, int optname, case MCAST_JOIN_GROUP: case MCAST_LEAVE_GROUP: { - struct compat_group_req __user *gr32 = (void *)optval; + struct compat_group_req __user *gr32 = (__force void *)optval; struct group_req __user *kgr = compat_alloc_user_space(sizeof(struct group_req)); u32 interface; @@ -603,7 +603,8 @@ int compat_mc_setsockopt(struct sock *sock, int level, int optname, case MCAST_BLOCK_SOURCE: case MCAST_UNBLOCK_SOURCE: { - struct compat_group_source_req __user *gsr32 = (void *)optval; + struct compat_group_source_req __user *gsr32 = + (__force void *)optval; struct group_source_req __user *kgsr = compat_alloc_user_space( sizeof(struct group_source_req)); u32 interface; @@ -624,7 +625,8 @@ int compat_mc_setsockopt(struct sock *sock, int level, int optname, } case MCAST_MSFILTER: { - struct compat_group_filter __user *gf32 = (void *)optval; + struct compat_group_filter __user *gf32 = + (__force void *)optval; struct group_filter __user *kgf; u32 interface, fmode, numsrc; @@ -662,7 +664,7 @@ int compat_mc_getsockopt(struct sock *sock, int level, int optname, char __user *optval, int __user *optlen, int (*getsockopt)(struct sock *, int, int, char __user *, int __user *)) { - struct compat_group_filter __user *gf32 = (void *)optval; + struct compat_group_filter __user *gf32 = (__force void *)optval; struct group_filter __user *kgf; int __user *koptlen; u32 interface, fmode, numsrc; diff --git a/sound/core/control_compat.c b/sound/core/control_compat.c index 507fd5210c1c..eae6af108bf2 100644 --- a/sound/core/control_compat.c +++ b/sound/core/control_compat.c @@ -418,7 +418,8 @@ static int snd_ctl_elem_add_compat(struct snd_ctl_file *file, sizeof(data->value.enumerated))) goto error; data->value.enumerated.names_ptr = - (uintptr_t)compat_ptr(data->value.enumerated.names_ptr); + (__force uintptr_t)compat_ptr( + data->value.enumerated.names_ptr); break; default: break; @@ -465,7 +466,7 @@ static inline long snd_ctl_ioctl_compat(struct file *file, unsigned int cmd, uns case SNDRV_CTL_IOCTL_TLV_READ: case SNDRV_CTL_IOCTL_TLV_WRITE: case SNDRV_CTL_IOCTL_TLV_COMMAND: - return snd_ctl_ioctl(file, cmd, (unsigned long)argp); + return snd_ctl_ioctl(file, cmd, (__force unsigned long)argp); case SNDRV_CTL_IOCTL_ELEM_LIST32: return snd_ctl_elem_list_compat(ctl->card, argp); case SNDRV_CTL_IOCTL_ELEM_INFO32: diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 66c90f486af9..6bf7fc29d6a0 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -2888,7 +2888,8 @@ static int snd_pcm_common_ioctl(struct file *file, case SNDRV_PCM_IOCTL_START: return snd_pcm_start_lock_irq(substream); case SNDRV_PCM_IOCTL_LINK: - return snd_pcm_link(substream, (int)(unsigned long) arg); + return snd_pcm_link(substream, + (int)(__force unsigned long) arg); case SNDRV_PCM_IOCTL_UNLINK: return snd_pcm_unlink(substream); case SNDRV_PCM_IOCTL_RESUME: @@ -2925,7 +2926,7 @@ static int snd_pcm_common_ioctl(struct file *file, case SNDRV_PCM_IOCTL_PAUSE: return snd_pcm_action_lock_irq(&snd_pcm_action_pause, substream, - (int)(unsigned long)arg); + (int)(__force unsigned long)arg); case SNDRV_PCM_IOCTL_WRITEI_FRAMES: case SNDRV_PCM_IOCTL_READI_FRAMES: return snd_pcm_xferi_frames_ioctl(substream, arg); diff --git a/sound/core/timer_compat.c b/sound/core/timer_compat.c index e00f7e399e46..b7bf8a99f883 100644 --- a/sound/core/timer_compat.c +++ b/sound/core/timer_compat.c @@ -154,7 +154,8 @@ static long __snd_timer_user_ioctl_compat(struct file *file, unsigned int cmd, case SNDRV_TIMER_IOCTL_PAUSE: case SNDRV_TIMER_IOCTL_PAUSE_OLD: case SNDRV_TIMER_IOCTL_NEXT_DEVICE: - return __snd_timer_user_ioctl(file, cmd, (unsigned long)argp); + return __snd_timer_user_ioctl(file, cmd, + (__force unsigned long)argp); case SNDRV_TIMER_IOCTL_GPARAMS32: return snd_timer_user_gparams_compat(file, argp); case SNDRV_TIMER_IOCTL_INFO32: