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| author | Rich Felker <dalias@libc.org> | 2018-03-15 20:01:36 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-30 07:47:38 +0200 |
| commit | af794b799a80cb855e251de3748a25f3700f0587 (patch) | |
| tree | b30fb2472488cc49d2412f490f9006a9a070054d | |
| parent | 8035424c9c5b4bd249a21866e6507c51e19e7ecd (diff) | |
| download | linux-stable-af794b799a80cb855e251de3748a25f3700f0587.tar.gz linux-stable-af794b799a80cb855e251de3748a25f3700f0587.tar.bz2 linux-stable-af794b799a80cb855e251de3748a25f3700f0587.zip | |
sh: fix debug trap failure to process signals before return to user
[ Upstream commit 96a598996f6ac518ac79839ecbb17c91af91f4f7 ]
When responding to a debug trap (breakpoint) in userspace, the
kernel's trap handler raised SIGTRAP but returned from the trap via a
code path that ignored pending signals, resulting in an infinite loop
re-executing the trapping instruction.
Signed-off-by: Rich Felker <dalias@libc.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/sh/kernel/entry-common.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sh/kernel/entry-common.S b/arch/sh/kernel/entry-common.S index 13047a4facd2..5a9017ba26ab 100644 --- a/arch/sh/kernel/entry-common.S +++ b/arch/sh/kernel/entry-common.S @@ -255,7 +255,7 @@ debug_trap: mov.l @r8, r8 jsr @r8 nop - bra __restore_all + bra ret_from_exception nop CFI_ENDPROC |