Hi, I'm trying to debug a kernel panic (something like this): Unable to handle kernel NULL pointer dereference at virtual address 00000014 ptbr = 93959000 pgd = 93a0a000 Oops: Kernel access of bad area, sig: 11 [#1] FRAME_POINTER chip: 0x01f:0x1e82 rev 2 Modules linked in: ftdi_sio usbserial PC is at isp1760_irq+0xda/0x7f0 LR is at isp1760_irq+0x492/0x7f0 pc : [<901408be>] lr : [<90140c76>] Not tainted sp : 93aa399c r12: fffffffe r11: 00000000 r10: 00000000 r9 : fffffffe r8 : 00000000 r7 : 93aa3a08 r6 : 93406400 r5 : 00820004 r4 : 00000003 r3 : 00000008 r2 : 00000002 r1 : fffffffd r0 : 93837000 Call trace: [<90134abc>] usb_hcd_irq+0x50/0x54 [<900383da>] handle_IRQ_event+0x1e/0x40 [<90039098>] handle_level_irq+0x78/0x8c ... This is on an AVR32 platform, and I'm building the kernel myself (cross compiling). The image is then converted to a uImage before being loaded to the target. Is there a way to get the following to work in this context? $ gdb arch/avr32/boot/images/vmlinux.elf ... Reading symbols from /home/.../linux-2.6.37/arch/avr32/boot/images/vmlinux.elf...done. (gdb) list *isp1760_irq+0xda 0x9017ac36 is in isp1760_irq (include/linux/spinlock.h:285). 280 raw_spin_lock_init(&(_lock)->rlock); \ 281 } while (0) 282 283 static inline void spin_lock(spinlock_t *lock) 284 { 285 raw_spin_lock(&lock->rlock); 286 } 287 288 static inline void spin_lock_bh(spinlock_t *lock) 289 { The problem is that the line reported is totally wrong (this being very unhelpful and confusing indeed - it tool me awhile to realise this!). I've also tried to use gdb from the avr32 toolchain with the same result. Is there a way to get this to work? Thanks, Arvid Brodin Enea Services Stockholm AB