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| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2016-03-17 22:23:04 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-17 23:09:34 +0100 |
| commit | 2553b67a1fbe7bf202e4e8070ab0b00d3d3a06a2 (patch) | |
| tree | fc3ae8145246c0914b83693988f3d9f1a695d9bb /lib/bug.c | |
| parent | param: convert some "on"/"off" users to strtobool (diff) | |
| download | linux-2553b67a1fbe7bf202e4e8070ab0b00d3d3a06a2.tar.xz linux-2553b67a1fbe7bf202e4e8070ab0b00d3d3a06a2.zip | |
lib/bug.c: use common WARN helper
The traceoff_on_warning option doesn't have any effect on s390, powerpc,
arm64, parisc, and sh because there are two different types of WARN
implementations:
1) The above mentioned architectures treat WARN() as a special case of a
BUG() exception. They handle warnings in report_bug() in lib/bug.c.
2) All other architectures just call warn_slowpath_*() directly. Their
warnings are handled in warn_slowpath_common() in kernel/panic.c.
Support traceoff_on_warning on all architectures and prevent any future
divergence by using a single common function to emit the warning.
Also remove the '()' from '%pS()', because the parentheses look funky:
[ 45.607629] WARNING: at /root/warn_mod/warn_mod.c:17 .init_dummy+0x20/0x40 [warn_mod]()
Reported-by: Chunyu Hu <chuhu@redhat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Tested-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/bug.c')
| -rw-r--r-- | lib/bug.c | 26 |
1 files changed, 2 insertions, 24 deletions
diff --git a/lib/bug.c b/lib/bug.c index 6cde380f09de..bc3656e944d2 100644 --- a/lib/bug.c +++ b/lib/bug.c @@ -167,30 +167,8 @@ enum bug_trap_type report_bug(unsigned long bugaddr, struct pt_regs *regs) if (warning) { /* this is a WARN_ON rather than BUG/BUG_ON */ - pr_warn("------------[ cut here ]------------\n"); - - if (file) - pr_warn("WARNING: at %s:%u\n", file, line); - else - pr_warn("WARNING: at %p [verbose debug info unavailable]\n", - (void *)bugaddr); - - if (panic_on_warn) { - /* - * This thread may hit another WARN() in the panic path. - * Resetting this prevents additional WARN() from - * panicking the system on this thread. Other threads - * are blocked by the panic_mutex in panic(). - */ - panic_on_warn = 0; - panic("panic_on_warn set ...\n"); - } - - print_modules(); - show_regs(regs); - print_oops_end_marker(); - /* Just a warning, don't kill lockdep. */ - add_taint(BUG_GET_TAINT(bug), LOCKDEP_STILL_OK); + __warn(file, line, (void *)bugaddr, BUG_GET_TAINT(bug), regs, + NULL); return BUG_TRAP_TYPE_WARN; } |