Messages in this thread |  | | Date | Thu, 28 Dec 2000 16:59:48 -0700 | From | "Jeff V. Merkey" <> | Subject | 2.2.19 hard hang from userspace while accessing /dev/mdXX devices |
| |
Hard hand in 2.2.19
If you open a non-existant md device (i.e. /dev/md11) from userspace with an open() call, then send an ioctl() command, it results in the following message then hard hangs the entire system if you attempt to open any /dev/mdXX device with a minor number greater than 10. Used to work on 2.2.17.
message is:
md map 11 bap map 11 ll_rw_block
offending code that causes the hard hang is:
register int fd, ccode; struct hd_geometry geometry;
fd = open("/dev/md11", O_RDWR); if (fd < 0) return 1;
#ifdef HDIO_REQ ccode = ioctl(fd, HDIO_REQ, &geometry); #else ccode = ioctl(fd, HDIO_GETGEO, &geometry); #endif if ((ccode == -EINVAL) || (ccode == -ENODEV)) { close(fd); return 1; } close(fd) return 0;
Jeff
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
|  |