mirror-linux

Author SHA1 Message Date

Author	SHA1	Message	Date
Jann Horn	c26958cb5a	Take mmap lock in cacheflush syscall We need to take the mmap lock around find_vma() and subsequent use of the VMA. Otherwise, we can race with concurrent operations like munmap(), which can lead to use-after-free accesses to freed VMAs. Fixes: `1000197d80` ("nios2: System calls handling") Signed-off-by: Jann Horn <jannh@google.com> Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>	2021-02-19 15:01:59 +08:00
Ley Foon Tan	1000197d80	nios2: System calls handling This patch adds support for system calls from userspaces. It uses the asm-generic/unistd.h definitions with architecture spcific syscall. The sys_call_table is just an array defined in a C file and it contains pointers to the syscall functions. Signed-off-by: Ley Foon Tan <lftan@altera.com>	2014-12-08 12:55:58 +08:00

Jann Horn

Take mmap lock in cacheflush syscall

We need to take the mmap lock around find_vma() and subsequent use of the
VMA. Otherwise, we can race with concurrent operations like munmap(), which
can lead to use-after-free accesses to freed VMAs.

Fixes: 1000197d80 ("nios2: System calls handling")
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>

2021-02-19 15:01:59 +08:00

Ley Foon Tan

1000197d80

nios2: System calls handling

This patch adds support for system calls from userspaces. It uses the
asm-generic/unistd.h definitions with architecture spcific syscall.
The sys_call_table is just an array defined in a C file and it contains
pointers to the syscall functions.

Signed-off-by: Ley Foon Tan <lftan@altera.com>

2014-12-08 12:55:58 +08:00

2 Commits (c38b8400aef99d63be2b1ff131bb993465dcafe1)