Messages in this thread | | | Subject | WARNING native_smp_call_function mask 2.6.22.6 SMP on Single CPU System | From | Michael Stiller <> | Date | Thu, 06 Sep 2007 13:00:03 +0200 |
| |
Hi,
i get the following warning if i call vfree some memory allocated by vmalloc on a single cpu machine running 2.6.22.6 SMP:
WARNING: at arch/i386/kernel/smp.c:559 native_smp_call_function_mask() [<c010e77c>] native_smp_call_function_mask+0x145/0x14a [<c01cb32d>] idr_remove+0x102/0x163 [<c010e43f>] do_flush_tlb_all+0x0/0x59 [<c010e43f>] do_flush_tlb_all+0x0/0x59 [<c010ea33>] smp_call_function+0x1c/0x29 [<c0120922>] on_each_cpu+0x18/0x29 [<c010e2e9>] flush_tlb_all+0x1b/0x1f [<c0155227>] remove_vm_area+0x4c/0x59 [<c0155252>] __vunmap+0x1e/0xe5 [<c011ccb7>] printk+0x1b/0x1f [<e0b15f21>] ring_release+0x1f7/0x28a [ring] [<c0247305>] sock_fasync+0x99/0x146 [<c024826b>] sock_release+0x14/0x66 [<c02486a8>] sock_close+0x1e/0x38 [<c01600ee>] __fput+0x99/0x166 [<c015db9f>] filp_close+0x3e/0x62 [<c015ebf0>] sys_close+0x5f/0x9e [<c0103dba>] syscall_call+0x7/0xb =======================
I use the rvmalloc / rvfree functions copied from usbvideo.c:
static void rvfree(void *mem, unsigned long size) { unsigned long adr; unsigned long pages = 0;
#if defined(RING_DEBUG) printk("RING: rvfree: %lu bytes\n", size); #endif
if (!mem) return;
adr = (unsigned long) mem; while ((long) size > 0) { ClearPageReserved(vmalloc_to_page((void *)adr)); pages++; adr += PAGE_SIZE; size -= PAGE_SIZE; } #if defined(RING_DEBUG) printk("RING: rvfree: %lu pages\n", pages); printk("RING: rvfree: calling vfree....\n"); #endif vfree(mem); // WARNING occurs here printk("RING: rvfree: after vfree....\n"); }
Any clues?
Please cc me for answers. Thanks in advance.
-Michael
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |