diff options
| author | Rich Felker <dalias@libc.org> | 2018-03-15 20:01:36 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-30 07:52:22 +0200 |
| commit | d9179b4aa407ee3c6408616f334b55484b1cb034 (patch) | |
| tree | e13dab0cbcdb264771928368e8ccadf5337ee0ae /arch/sh | |
| parent | 4ee9130f64238677cdff5948812426c1c75c0c5f (diff) | |
| download | linux-rt-d9179b4aa407ee3c6408616f334b55484b1cb034.tar.gz | |
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>
Diffstat (limited to 'arch/sh')
| -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 c001f782c5f1..28cc61216b64 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 |