Andreas Schwab schwab@linux-m68k.org writes:
This breaks booting on ppc32:
Does enabling CONFIG_DEBUG_ATOMIC_SLEEP fix the crash? It did for me on qemu.
cheers
Kernel attemptd to writ user page (1ff0) - exploit attempt? (uid: 0) BUG: Unable to handle kernel data access on write at 0x00001ff0 Faulting instruction address: 0xc0009554 Vector: 300 (Data Access) at [c0b09d10] pc: c0009554: do_softirq_own_stack+0x18/0x30 lr: c004f480: __irq_exit_rcu+0x70/0xc0 sp: c0b09dd0 msr: 1032 dar: 1ff0 dsisr: 42000000 current = 0xc0a08360 pid = 0, comm = swapper Linux version 6.5.0 ... enter ? for help [c0b09de0] c00ff480 __irq_exit_rcu+0x70/0xc0 [c0b09df0] c0005a98 Decrementer_virt+0x108/0x10c --- Exception: 900 (Decrementer) at c06cfa0c __schedule+0x4fc/0x510 [c0b09ec0] c06cf75c __schedule+0x1cc/0x510 (unreliable) [c0b09ef0] c06cfc90 __cond_resched+0x2c/0x54 [c0b09f00] c06d07f8 mutex_lock_killable+0x18/0x5c [c0b09f10] c013c404 pcpu_alloc+0x110/0x4dc [c0b09f70] c000cc34 alloc_descr.isra.18+0x48/0x144 [c0b09f90] c0988aa0 early_irq_init+0x64/0x8c [c0b09fa0] c097a5a4 start_kernel+0x5b4/0x7b0 [c0b09ff0] 00003dc0 mon>
-- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."