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author | Will Deacon <will.deacon@arm.com> | 2013-09-19 10:32:20 +0100 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2013-09-21 20:41:25 +0100 |
commit | d95bc2501da97e2884b957c48df37c258a34db8d (patch) | |
tree | e7414b8c26264cdec3b2f64317dddff0cd780aee /arch/arm/kernel/signal.c | |
parent | c89efa731e70a12908a0c155518ebbfd2d6ca605 (diff) | |
download | talos-obmc-linux-d95bc2501da97e2884b957c48df37c258a34db8d.tar.gz talos-obmc-linux-d95bc2501da97e2884b957c48df37c258a34db8d.zip |
ARM: 7839/1: entry: fix tracing of ARM-private syscalls
Commit 377747c40657 ("ARM: entry: allow ARM-private syscalls to be
restarted") reworked the low-level syscall dispatcher to allow
restarting of ARM-private syscalls. Unfortunately, this relocated the
label used to dispatch a private syscall from the trace path, so that
the invocation would be bypassed altogether!
This causes applications to fail under strace as soon as they rely on
a private syscall (e.g. set_tls):
set_tls(0xb6fad4c0, 0xb6fadb98, 0xb6fb1050, 0xb6fad4c0, 0xb6fb1050)
= -1 ENOSYS (Function not implemented)
This patch fixes the label so that we correctly dispatch private
syscalls from the trace path.
Reported-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Tested-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/kernel/signal.c')
0 files changed, 0 insertions, 0 deletions