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| author | Al Viro <viro@zeniv.linux.org.uk> | 2015-02-23 03:21:31 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2015-04-11 22:24:31 -0400 |
| commit | a555ad450f973528825201a5fedbe46374f86644 (patch) | |
| tree | 693c68515fb05210c87c5dea011564f8a3b132ae /arch | |
| parent | 9e7543e9398ddd9679fbc81748a3e62eff4ab105 (diff) | |
| download | blackbird-obmc-linux-a555ad450f973528825201a5fedbe46374f86644.tar.gz blackbird-obmc-linux-a555ad450f973528825201a5fedbe46374f86644.zip | |
whack-a-mole: no need to set_fs(USER_DS) in {start,flush}_thread()
flush_old_exec() has already done that. Back on 2011 a bunch of
instances like that had been kicked out, but that hadn't taken
care of then-out-of-tree architectures, obviously, and they served
as reinfection vector...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arc/kernel/process.c | 2 | ||||
| -rw-r--r-- | arch/c6x/kernel/process.c | 1 | ||||
| -rw-r--r-- | arch/hexagon/kernel/process.c | 2 | ||||
| -rw-r--r-- | arch/metag/include/asm/processor.h | 1 | ||||
| -rw-r--r-- | arch/nios2/kernel/process.c | 1 | ||||
| -rw-r--r-- | arch/openrisc/kernel/process.c | 1 |
6 files changed, 0 insertions, 8 deletions
diff --git a/arch/arc/kernel/process.c b/arch/arc/kernel/process.c index 98c00a2d4dd9..f46efd14059d 100644 --- a/arch/arc/kernel/process.c +++ b/arch/arc/kernel/process.c @@ -155,8 +155,6 @@ int copy_thread(unsigned long clone_flags, */ void start_thread(struct pt_regs * regs, unsigned long pc, unsigned long usp) { - set_fs(USER_DS); /* user space */ - regs->sp = usp; regs->ret = pc; diff --git a/arch/c6x/kernel/process.c b/arch/c6x/kernel/process.c index 57d2ea8d1977..3ae9f5a166a0 100644 --- a/arch/c6x/kernel/process.c +++ b/arch/c6x/kernel/process.c @@ -101,7 +101,6 @@ void start_thread(struct pt_regs *regs, unsigned int pc, unsigned long usp) */ usp -= 8; - set_fs(USER_DS); regs->pc = pc; regs->sp = usp; regs->tsr |= 0x40; /* set user mode */ diff --git a/arch/hexagon/kernel/process.c b/arch/hexagon/kernel/process.c index 0a0dd5c05b46..a9ebd471823a 100644 --- a/arch/hexagon/kernel/process.c +++ b/arch/hexagon/kernel/process.c @@ -37,8 +37,6 @@ */ void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long sp) { - /* Set to run with user-mode data segmentation */ - set_fs(USER_DS); /* We want to zero all data-containing registers. Is this overkill? */ memset(regs, 0, sizeof(*regs)); /* We might want to also zero all Processor registers here */ diff --git a/arch/metag/include/asm/processor.h b/arch/metag/include/asm/processor.h index 13272fd5a5ba..0838ca699764 100644 --- a/arch/metag/include/asm/processor.h +++ b/arch/metag/include/asm/processor.h @@ -111,7 +111,6 @@ struct thread_struct { */ #define start_thread(regs, pc, usp) do { \ unsigned int *argc = (unsigned int *) bprm->exec; \ - set_fs(USER_DS); \ current->thread.int_depth = 1; \ /* Force this process down to user land */ \ regs->ctx.SaveMask = TBICTX_PRIV_BIT; \ diff --git a/arch/nios2/kernel/process.c b/arch/nios2/kernel/process.c index 0e075b5ad2a5..2f8c74f93e70 100644 --- a/arch/nios2/kernel/process.c +++ b/arch/nios2/kernel/process.c @@ -94,7 +94,6 @@ void show_regs(struct pt_regs *regs) void flush_thread(void) { - set_fs(USER_DS); } int copy_thread(unsigned long clone_flags, diff --git a/arch/openrisc/kernel/process.c b/arch/openrisc/kernel/process.c index 386af258591d..7095dfe7666b 100644 --- a/arch/openrisc/kernel/process.c +++ b/arch/openrisc/kernel/process.c @@ -197,7 +197,6 @@ void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long sp) { unsigned long sr = mfspr(SPR_SR) & ~SPR_SR_SM; - set_fs(USER_DS); memset(regs, 0, sizeof(struct pt_regs)); regs->pc = pc; |
