sh: fix debug trap failure to process signals before return to user
authorRich Felker <dalias@libc.org>
Fri, 16 Mar 2018 00:01:36 +0000 (20:01 -0400)
committerRich Felker <dalias@libc.org>
Thu, 12 Apr 2018 23:47:52 +0000 (19:47 -0400)
commit96a598996f6ac518ac79839ecbb17c91af91f4f7
treee98fa02d3b025abe1a3bd55d804a64e4259bcdf5
parenteb6b6930a70faefe04479a71088cc10366782d9a
sh: fix debug trap failure to process signals before return to user

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>
arch/sh/kernel/entry-common.S