diff options
Diffstat (limited to 'arch/um/os-Linux')
| -rw-r--r-- | arch/um/os-Linux/elf_aux.c | 3 | ||||
| -rw-r--r-- | arch/um/os-Linux/sigio.c | 5 | ||||
| -rw-r--r-- | arch/um/os-Linux/skas/process.c | 5 | ||||
| -rw-r--r-- | arch/um/os-Linux/trap.c | 1 |
4 files changed, 12 insertions, 2 deletions
diff --git a/arch/um/os-Linux/elf_aux.c b/arch/um/os-Linux/elf_aux.c index 3a8d7e3aae0a..608784d4ec57 100644 --- a/arch/um/os-Linux/elf_aux.c +++ b/arch/um/os-Linux/elf_aux.c @@ -39,6 +39,9 @@ __init void scan_elf_aux( char **envp) switch ( auxv->a_type ) { case AT_SYSINFO: __kernel_vsyscall = auxv->a_un.a_val; + /* See if the page is under TASK_SIZE */ + if (__kernel_vsyscall < (unsigned long) envp) + __kernel_vsyscall = 0; break; case AT_SYSINFO_EHDR: vsyscall_ehdr = auxv->a_un.a_val; diff --git a/arch/um/os-Linux/sigio.c b/arch/um/os-Linux/sigio.c index b2e1fd8e3571..3fc43b33db66 100644 --- a/arch/um/os-Linux/sigio.c +++ b/arch/um/os-Linux/sigio.c @@ -334,8 +334,11 @@ void maybe_sigio_broken(int fd, int read) sigio_lock(); err = need_poll(&all_sigio_fds, all_sigio_fds.used + 1); - if(err) + if(err){ + printk("maybe_sigio_broken - failed to add pollfd for " + "descriptor %d\n", fd); goto out; + } all_sigio_fds.poll[all_sigio_fds.used++] = ((struct pollfd) { .fd = fd, diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index 9b34fe65949a..dda06789bcb0 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -419,9 +419,12 @@ void map_stub_pages(int fd, unsigned long code, .offset = code_offset } } }); n = os_write_file(fd, &mmop, sizeof(mmop)); - if(n != sizeof(mmop)) + if(n != sizeof(mmop)){ + printk("mmap args - addr = 0x%lx, fd = %d, offset = %llx\n", + code, code_fd, (unsigned long long) code_offset); panic("map_stub_pages : /proc/mm map for code failed, " "err = %d\n", -n); + } if ( stack ) { __u64 map_offset; diff --git a/arch/um/os-Linux/trap.c b/arch/um/os-Linux/trap.c index 1df231a26244..d221214d2ed5 100644 --- a/arch/um/os-Linux/trap.c +++ b/arch/um/os-Linux/trap.c @@ -16,6 +16,7 @@ void usr2_handler(int sig, union uml_pt_regs *regs) CHOOSE_MODE(syscall_handler_tt(sig, regs), (void) 0); } +/* Initialized from linux_main() */ void (*sig_info[NSIG])(int, union uml_pt_regs *); void os_fill_handlinfo(struct kern_handlers h) |
