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| author | Al Viro | 2012-11-19 04:27:03 +0100 |
|---|---|---|
| committer | David S. Miller | 2012-11-19 04:27:03 +0100 |
| commit | fae2ae2a900a5c7bb385fe4075f343e7e2d5daa2 (patch) | |
| tree | e2a5db3f28670ff0e86f2f75d1c6de210a51967f /arch/parisc/kernel/signal32.c | |
| parent | fanotify: fix FAN_Q_OVERFLOW case of fanotify_read() (diff) | |
| download | kernel-qcow2-linux-fae2ae2a900a5c7bb385fe4075f343e7e2d5daa2.tar.gz kernel-qcow2-linux-fae2ae2a900a5c7bb385fe4075f343e7e2d5daa2.tar.xz kernel-qcow2-linux-fae2ae2a900a5c7bb385fe4075f343e7e2d5daa2.zip | |
sparc64: not any error from do_sigaltstack() should fail rt_sigreturn()
If a signal handler is executed on altstack and another signal comes,
we will end up with rt_sigreturn() on return from the second handler
getting -EPERM from do_sigaltstack(). It's perfectly OK, since we
are not asking to change the settings; in fact, they couldn't have been
changed during the second handler execution exactly because we'd been
on altstack all along. 64bit sigreturn on sparc treats any error from
do_sigaltstack() as "SIGSEGV now"; we need to switch to the same semantics
we are using on other architectures.
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/parisc/kernel/signal32.c')
0 files changed, 0 insertions, 0 deletions