Hi all. I'm trying to debug a "spinlock held too long" error. Therefore I thought compiling my kernel with "options WITNESS" would be a good idea.
Using the WITNESS kernel I cannot load my driver with any MTX_SPIN mutex. I had to change it all to MTX_DEF since every MTX_SPIN got me this error: panic: lock (network driver) spin mutex does not match earlier (sleep mutex) lock So I changed it all to MTX_DEF, just to see if things will work. Now I can load my driver, but calling ifconfig shows a new crash: mtnic0: Activating port:1 mtnic0: Ethernet address: 00:00:00:00:08:88 mtnic0: Activating port:2 mtnic1: Ethernet address: 00:00:00:00:08:89 lock order reversal: (sleepable after non-sleepable) 1st 0xffffffff81379010 MTNIC state semaphore (MTNIC state semaphore) @ mtnic_netdev.c:1855 2nd 0xffffffff809eee00 ACPI root bus (ACPI root bus) @ /usr/src/sys/dev/acpica/acpi.c:1022 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2a witness_checkorder() at witness_checkorder+0x559 _sx_xlock() at _sx_xlock+0x32 acpi_alloc_resource() at acpi_alloc_resource+0x9a pci_alloc_resource() at pci_alloc_resource+0x81 resource_list_alloc() at resource_list_alloc+0x17a pci_alloc_resource() at pci_alloc_resource+0x81 bus_alloc_resource() at bus_alloc_resource+0x89 mtnic_start_port() at mtnic_start_port+0x4f1 mtnic_open() at mtnic_open+0xb2 ether_ioctl() at ether_ioctl+0xb5 mtnic_ioctl() at mtnic_ioctl+0x3e in_ifinit() at in_ifinit+0x8d in_control() at in_control+0xc66 ifioctl() at ifioctl+0xea kern_ioctl() at kern_ioctl+0xa3 ioctl() at ioctl+0xf9 syscall() at syscall+0x1b5 Xfast_syscall() at Xfast_syscall+0xab --- syscall (54, FreeBSD ELF64, ioctl), rip = 0x800824cfc, rsp = 0x7fffffffe3b8, rbp = 0x7fffffffee10 --- KDB: enter: witness_checkorder [thread pid 1051 tid 100069 ] Stopped at kdb_enter+0x31: leave db> Can anybody please tell me what is going on here? -Yony _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
