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| author | Thomas Gleixner <tglx@linutronix.de> | 2015-01-12 10:51:13 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2015-01-12 10:51:13 +0100 |
| commit | 2f5eaf66e580f64032b365a00157b6b58c266b37 (patch) | |
| tree | 7852017c864f0eb3833782e2a017952bd8531458 /kernel/panic.c | |
| parent | c291ee622165cb2c8d4e7af63fffd499354a23be (diff) | |
| parent | 91d1179212161f220938198b742c328ad38fd0a3 (diff) | |
Merge tag 'irqchip-urgent-3.19' of git://git.infradead.org/users/jcooper/linux into irq/urgent
irqchip urgent fixes for v3.19 from Jason Cooper
- mtk-sysirq: Fix error handling
- hip04: Fix cpu map for 16bit value
- gic-v3-its: Clear a warning regarding decimal constants
- omap-intc: Fix legacy DMA regression
- atmel-aic-common: Retain priority when changing type
Diffstat (limited to 'kernel/panic.c')
| -rw-r--r-- | kernel/panic.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/kernel/panic.c b/kernel/panic.c index cf80672b792..4d8d6f906de 100644 --- a/kernel/panic.c +++ b/kernel/panic.c @@ -33,6 +33,7 @@ static int pause_on_oops; static int pause_on_oops_flag; static DEFINE_SPINLOCK(pause_on_oops_lock); static bool crash_kexec_post_notifiers; +int panic_on_warn __read_mostly; int panic_timeout = CONFIG_PANIC_TIMEOUT; EXPORT_SYMBOL_GPL(panic_timeout); @@ -428,6 +429,17 @@ static void warn_slowpath_common(const char *file, int line, void *caller, if (args) vprintk(args->fmt, args->args); + 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(); dump_stack(); print_oops_end_marker(); @@ -485,6 +497,7 @@ EXPORT_SYMBOL(__stack_chk_fail); core_param(panic, panic_timeout, int, 0644); core_param(pause_on_oops, pause_on_oops, int, 0644); +core_param(panic_on_warn, panic_on_warn, int, 0644); static int __init setup_crash_kexec_post_notifiers(char *s) { |