Bug: recent printk recursion
WebWe use printk-safe now which makes printk-recursion detection code in vprintk_emit() unreachable. The tricky thing here is that, apart from detecting and reporting printk recursions, that code also used to zap_locks() in case of panic() from the same CPU. However, zap_locks() does not look to be needed anymore: Webrecursion_bug = 1; goto out_restore_irqs;} zap_locks ();} lockdep_off (); raw_spin_lock (& logbuf_lock); printk_cpu = this_cpu; if (recursion_bug) {recursion_bug = 0; strcpy …
Bug: recent printk recursion
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Web-const char printk_recursion_bug_msg [] = - KERN_CRIT "BUG: recent printk recursion!\n";-static int printk_recursion_bug;-asmlinkage int vprintk(const char *fmt, … WebJul 9, 2009 · "The patch for this bug is by editing the vprink () function and make printk_recursion_bug_msg static and drop printk prefix from recursion variables and …
WebThe comment assumed the burst to be one and the ratelimit used to be named printk_ratelimit_jiffies. Signed-off-by: Uwe Kleine-König Cc: Dave Young Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds http://visa.lab.asu.edu/gitlab/fstrace/android-kernel-msm-hammerhead-3.4-marshmallow-mr3/commits/331995e78385a0b9860f4c4c1766e842e61c450a/kernel/printk.c
WebIs it acceptible? > > yes, this is how it is. "BUG: recent printk recursion!" will be printed > instead of the message. I am not sure if it's the best way. For example, in the case … Webrecursion bug (basically 'bool'). Make it a bit more informative and keep in `recursion_bug' smp_processor_id of the CPU (the most recent one) that has caused a recursive printk bug. For instance, the error message will change from BUG: recent printk recursion! to BUG: recent printk recursion on CPU5! Rename `recursion_bug' to …
WebCreated attachment 109919 complete dmesg from 3.18-rc4 all kernels since 3.13 immidiatly print this while loading the initrd: (copied by hand) ----- BUG: recent printk recursion! E[ DRM] GPU lockup - switching to software fbcon ----- this of course means X wont come up. the last working kernel seems to be 3.11. i've tested 3.13, 3.15, 3.16, 3.17 and 3.18-rc4 …
WebCuando se descubre que varios núcleos llaman a printk durante el proceso de localización de fallas, es difícil ver intuitivamente qué núcleo está imprimiendo cada línea. Así que quiero aumentar el número de núcleo antes de cada línea para imprimir "[x]", intenté durante mucho tiempo, intento aumentar la conversión de cadena de this ... jesse clark photographyjesse clark wedding videographerWeb# BUG: recent printk recursion! <7>dm9000 dm9000: entering dm9000_interrupt BUG: spinlock recursion on CPU#0, httpd/29 lock: 00177648, .magic: dead4ead, .owner: … jesse clayburn cfisdWebSo let's complain about anything we don't understand, not just %n, and stop pretending that we'd be able to make sense of the rest of the format/arguments. If the offending specifier is in a printk() call we unfortunately only get a "BUG: recent printk recursion!", but at least direct users of the sprintf family will be caught. jesse clark editingWebAhh, what we could do is something like the below and delay both the acquire and release of the console_sem. --- kernel/printk.c 86 +++++----- 1 files changed, 40 insertions(+), 46 deletions(-) diff--git a/kernel/printk.c b/kernel/printk.c index 3518539..d3bdf5a 100644 --- a/kernel/printk.c +++ b/kernel/printk.c @@ -686,6 +686,7 @@ static ... jesse clay navy seal twistin wristWebJun 28, 2013 · text 4.38 KB None 0 0 raw download clone embed print report NR_IRQS:16 nr_irqs:16 16 sched_clock: 32 bits at 24MHz, resolution 41ns, wraps every … jesse clayton wilsonWeb"BUG: recent printk recursion!"; - recursion_bug = 0; + recursion_bug = false; /* emit KERN_CRIT message */ printed_len += log_store(0, 2, LOG_PREFIX LOG_NEWLINE, … jesse clegg wife dies