kernel/linux.git/arch/blackfin/include/asm/bug.h, branch linux-4.16.y

debug: Fix WARN_ON_ONCE() for modules

2017-07-20T10:31:04+00:00

Mike Galbraith reported a situation where a WARN_ON_ONCE() call in DRM code turned into an oops. As it turns out, WARN_ON_ONCE() seems to be completely broken when called from a module. The bug was introduced with the following commit: 19d436268dde ("debug: Add _ONCE() logic to report_bug()") That commit changed WARN_ON_ONCE() to move its 'once' logic into the bug trap handler. It requires a writable bug table so that the BUGFLAG_DONE bit can be written to the flags to indicate the first warning has occurred. The bug table was made writable for vmlinux, which relies on vmlinux.lds.S and vmlinux.lds.h for laying out the sections. However, it wasn't made writable for modules, which rely on the ELF section header flags. Reported-by: Mike Galbraith Tested-by: Masami Hiramatsu Signed-off-by: Josh Poimboeuf Acked-by: Peter Zijlstra (Intel) Cc: Linus Torvalds Cc: Peter Zijlstra Cc: Thomas Gleixner Fixes: 19d436268dde ("debug: Add _ONCE() logic to report_bug()") Link: http://lkml.kernel.org/r/a53b04235a65478dd9afc51f5b329fdc65c84364.1500095401.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar

Blackfin: change the BUG opcode to an unused 16-bit opcode

2010-05-22T18:19:04+00:00

The current BUG opcode includes the bit that flags the insn as a 32bit opcode, but it wasn't declaring it as 32bits. So pick an unused 16bit. URL: http://blackfin.uclinux.org/gf/tracker/5973 Signed-off-by: Robin Getz Signed-off-by: Mike Frysinger

Blackfin: Convert BUG() to use unreachable()

2009-12-15T13:38:35+00:00

Use the new unreachable() macro instead of for(;;); Signed-off-by: David Daney Signed-off-by: Mike Frysinger

Blackfin: mass clean up of copyright/licensing info

2009-10-07T08:36:26+00:00

Bill Gatliff & David Brownell pointed out we were missing some copyrights, and licensing terms in some of the files in ./arch/blackfin, so this fixes things, and cleans them up. It also removes: - verbose GPL text(refer to the top level ./COPYING file) - file names (you are looking at the file) - bug url (it's in the ./MAINTAINERS file) - "or later" on GPL-2, when we did not have that right It also allows some Blackfin-specific assembly files to be under a BSD like license (for people to use them outside of Linux). Signed-off-by: Robin Getz Signed-off-by: Mike Frysinger

Blackfin: add support for GENERIC_BUG

2009-06-13T11:20:07+00:00

Signed-off-by: Mike Frysinger

Blackfin arch: move include/asm-blackfin header files to arch/blackfin

2008-08-27T02:51:02+00:00

Signed-off-by: Bryan Wu