#include #include #include #include #include #include #ifndef MCL_ONFAULT #define MCL_ONFAULT (MCL_FUTURE << 1) #endif static int test_limit(void) { int ret = 1; struct rlimit lims; void *map; if (getrlimit(RLIMIT_MEMLOCK, &lims)) { perror("getrlimit"); return ret; } if (mlockall(MCL_ONFAULT | MCL_FUTURE)) { perror("mlockall"); return ret; } map = mmap(NULL, 2 * lims.rlim_max, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_POPULATE, 0, 0); if (map != MAP_FAILED) printf("mmap should have failed, but didn't\n"); else { ret = 0; munmap(map, 2 * lims.rlim_max); } munlockall(); return ret; } int main(int argc, char **argv) { int ret = 0; ret += test_limit(); return ret; } git/'>net-next.git
net-next plumbingsTobias Klauser
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authorThomas Gleixner <tglx@linutronix.de>2017-01-31 19:03:21 +0100
committerThomas Gleixner <tglx@linutronix.de>2017-01-31 20:22:18 +0100
commitaaaec6fc755447a1d056765b11b24d8ff2b81366 (patch)
treea7f4167960ee1df86739905b6ccdeb95465bfe5f /drivers/usb/musb/am35x.c
parent08d85f3ea99f1eeafc4e8507936190e86a16ee8c (diff)
x86/irq: Make irq activate operations symmetric
The recent commit which prevents double activation of interrupts unearthed interesting code in x86. The code (ab)uses irq_domain_activate_irq() to reconfigure an already activated interrupt. That trips over the prevention code now. Fix it by deactivating the interrupt before activating the new configuration. Fixes: 08d85f3ea99f1 "irqdomain: Avoid activating interrupts more than once" Reported-and-tested-by: Mike Galbraith <efault@gmx.de> Reported-and-tested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701311901580.3457@nanos
Diffstat (limited to 'drivers/usb/musb/am35x.c')