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authorXi Kangjie <imxikangjie@gmail.com>2018-01-18 16:34:00 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-01-19 10:09:41 -0800
commit883d50f56d263f70fd73c0d96b09eb36c34e9305 (patch)
tree02e9e827233616e37837735b7a61b62c77d97f55 /scripts
parentscripts/decodecode: fix decoding for AArch64 (arm64) instructions (diff)
downloadlinux-dev-883d50f56d263f70fd73c0d96b09eb36c34e9305.tar.xz
linux-dev-883d50f56d263f70fd73c0d96b09eb36c34e9305.zip
scripts/gdb/linux/tasks.py: fix get_thread_info
Since kernel 4.9, the thread_info has been moved into task_struct, no longer locates at the bottom of kernel stack. See commits c65eacbe290b ("sched/core: Allow putting thread_info into task_struct") and 15f4eae70d36 ("x86: Move thread_info into task_struct"). Before fix: (gdb) set $current = $lx_current() (gdb) p $lx_thread_info($current) $1 = {flags = 1470918301} (gdb) p $current.thread_info $2 = {flags = 2147483648} After fix: (gdb) p $lx_thread_info($current) $1 = {flags = 2147483648} (gdb) p $current.thread_info $2 = {flags = 2147483648} Link: http://lkml.kernel.org/r/20180118210159.17223-1-imxikangjie@gmail.com Fixes: 15f4eae70d36 ("x86: Move thread_info into task_struct") Signed-off-by: Xi Kangjie <imxikangjie@gmail.com> Acked-by: Jan Kiszka <jan.kiszka@siemens.com> Acked-by: Kieran Bingham <kbingham@kernel.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts')
-rw-r--r--scripts/gdb/linux/tasks.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/scripts/gdb/linux/tasks.py b/scripts/gdb/linux/tasks.py
index 1bf949c43b76..f6ab3ccf698f 100644
--- a/scripts/gdb/linux/tasks.py
+++ b/scripts/gdb/linux/tasks.py
@@ -96,6 +96,8 @@ def get_thread_info(task):
thread_info_addr = task.address + ia64_task_size
thread_info = thread_info_addr.cast(thread_info_ptr_type)
else:
+ if task.type.fields()[0].type == thread_info_type.get_type():
+ return task['thread_info']
thread_info = task['stack'].cast(thread_info_ptr_type)
return thread_info.dereference()