[Qemu-devel] [PATCH] linux-user: fix multi-threaded /proc/self/maps

[Alexander Graf]

When reading our faked /proc/self/maps from a secondary thread,
we get an invalid stack entry. This is because ts->stack_base is not
initialized in non-primary threads.

However, ts->info is, and the stack layout information we're looking
for is there too. So let's use that one instead!

Signed-off-by: Alexander Graf <address@hidden>
---
 linux-user/syscall.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 39d02f8..06408bd 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -4920,8 +4920,8 @@ static int open_self_maps(void *cpu_env, int fd)
 #if defined(TARGET_ARM) || defined(TARGET_M68K) || defined(TARGET_UNICORE32)
     dprintf(fd, "%08llx-%08llx rw-p %08llx 00:00 0          [stack]\n",
                 (unsigned long long)ts->info->stack_limit,
-                (unsigned long long)(ts->stack_base + (TARGET_PAGE_SIZE - 1))
-                                     & TARGET_PAGE_MASK,
+                (unsigned long long)(ts->info->start_stack +
+                                     (TARGET_PAGE_SIZE - 1)) & 
TARGET_PAGE_MASK,
                 (unsigned long long)0);
 #endif
 
-- 
1.6.0.2