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: 0 PID: 4435 Comm: syz.3.4 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : rose_transmit_link+0x40/0x668 net/rose/rose_link.c:266 lr : rose_transmit_link+0x34/0x668 net/rose/rose_link.c:263 sp : ffff800021327760 x29: ffff800021327760 x28: dfff800000000000 x27: ffff700004264efc x26: dfff800000000000 x25: 0000000000000032 x24: 0000000000000000 x23: ffff0000c46595ad x22: 0000000000000000 x21: 0000000000000036 x20: ffff0000d1d15b40 x19: 0000000000000000 x18: ffff800011b8bf60 x17: ffff80000fd47170 x16: ffff8000082d9364 x15: 0000000000000002 x14: 000000000000000f x13: 0000000000ff0100 x12: 0000000000080000 x11: 00000000000066f6 x10: ffff800025f19000 x9 : 0000000000000006 x8 : 0000000000000006 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000000 x3 : ffff80000fd637bc x2 : 0000000000000001 x1 : 0000000000000000 x0 : ffff0000d1d15b40 Call trace: rose_transmit_link+0x40/0x668 net/rose/rose_link.c:266 rose_write_internal+0xefc/0x17d0 net/rose/rose_subr.c:198 rose_release+0x208/0x4d4 net/rose/af_rose.c:671 __sock_release net/socket.c:654 [inline] sock_close+0xb4/0x1f8 net/socket.c:1399 __fput+0x1bc/0x7b8 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x1ec/0x278 kernel/task_work.c:203 get_signal+0x111c/0x1304 kernel/signal.c:2648 do_signal arch/arm64/kernel/signal.c:1095 [inline] do_notify_resume+0x33c/0x2aa4 arch/arm64/kernel/signal.c:1148 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+0x98/0x128 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: 97d1b2a8 9100da75 d343fea8 12000aa9 (38fa6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97d1b2a8 bl 0xffffffffff46caa0 4: 9100da75 add x21, x19, #0x36 8: d343fea8 lsr x8, x21, #3 c: 12000aa9 and w9, w21, #0x7 * 10: 38fa6908 ldrsb w8, [x8, x26] <-- trapping instruction