Unable to handle kernel paging request at virtual address dfff800000000006 KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 [dfff800000000006] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 5291 Comm: syz.0.234 Not tainted 6.1.146-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : rose_transmit_link+0x40/0x66c net/rose/rose_link.c:266 lr : rose_transmit_link+0x34/0x66c net/rose/rose_link.c:263 sp : ffff800020c67760 x29: ffff800020c67760 x28: dfff800000000000 x27: 1ffff0000418cefc x26: dfff800000000000 x25: 0000000000000032 x24: 0000000000000000 x23: ffff0000f63955a5 x22: 0000000000000000 x21: 0000000000000032 x20: ffff0000cad13dc0 x19: 0000000000000000 x18: 0000000000000000 x17: 0000000000000000 x16: ffff800008042c60 x15: 0000000000000002 x14: 000000000000000f x13: 0000000000ff0100 x12: 0000000000080000 x11: 000000000000144c x10: ffff800021019000 x9 : 0000000000000002 x8 : 0000000000000006 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000000 x3 : ffff80000fccb9f0 x2 : 0000000000000001 x1 : 0000000000000000 x0 : ffff0000cad13dc0 Call trace: rose_transmit_link+0x40/0x66c net/rose/rose_link.c:266 rose_write_internal+0xeec/0x17c0 net/rose/rose_subr.c:198 rose_release+0x224/0x518 net/rose/af_rose.c:671 __sock_release net/socket.c:654 [inline] sock_close+0xb4/0x1f8 net/socket.c:1400 __fput+0x1bc/0x7c0 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x1ec/0x270 kernel/task_work.c:203 get_signal+0x1120/0x1310 kernel/signal.c:2648 do_signal arch/arm64/kernel/signal.c:1081 [inline] do_notify_resume+0x340/0x2b0c arch/arm64/kernel/signal.c:1134 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x98/0x138 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Code: 97d4bb4a 9100ca75 d343fea8 12000aa9 (38fa6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97d4bb4a bl 0xffffffffff52ed28 4: 9100ca75 add x21, x19, #0x32 8: d343fea8 lsr x8, x21, #3 c: 12000aa9 and w9, w21, #0x7 * 10: 38fa6908 ldrsb w8, [x8, x26] <-- trapping instruction