Unable to handle kernel paging request at virtual address dfff800000000000 KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] Mem abort info: ESR = 0x0000000096000005 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x05: level 1 translation fault Data abort info: ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [dfff800000000000] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.11.0-rc7-syzkaller-00105-g5f5673607153 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : dst_dev_put+0x2c/0x2bc net/core/dst.c:149 lr : dst_dev_put+0x28/0x2bc net/core/dst.c:148 sp : ffff8000976079a0 x29: ffff8000976079a0 x28: ffffffffffffffff x27: ffff80008eefa000 x26: 1ffff00011ddf466 x25: dfff800000000000 x24: dfff800000000000 x23: 0000000000000000 x22: dfff800000000000 x21: ffff80008f571148 x20: 00007dfe9b5f8080 x19: 0000000000000004 x18: ffff0001b36af6a8 x17: 00000000ffff0000 x16: ffff800080569b84 x15: 0000000000000001 x14: 1fffe0001db510c3 x13: 0000000000000000 x12: 0000000000000000 x11: ffff60001db510c4 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : ffff0000c19ddac0 x7 : ffff80008325ee24 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff800089ddf5e0 x2 : 0000000000000001 x1 : 0000000000000001 x0 : 0000000000000004 Call trace: dst_dev_put+0x2c/0x2bc net/core/dst.c:149 rt_fibinfo_free_cpus net/ipv4/fib_semantics.c:206 [inline] fib_nh_common_release+0x1f4/0x440 net/ipv4/fib_semantics.c:217 fib6_nh_release+0x3a0/0x40c net/ipv6/route.c:3668 fib6_info_destroy_rcu+0xc8/0x214 net/ipv6/ip6_fib.c:177 rcu_do_batch kernel/rcu/tree.c:2569 [inline] rcu_core+0x888/0x1b3c kernel/rcu/tree.c:2843 rcu_core_si+0x10/0x1c kernel/rcu/tree.c:2860 handle_softirqs+0x2e4/0xbfc kernel/softirq.c:554 run_ksoftirqd+0x70/0x158 kernel/softirq.c:928 smpboot_thread_fn+0x4b0/0x90c kernel/smpboot.c:164 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860 Code: aa0003f3 f2fbfff6 97a8d6ee d343fe77 (38766ae8) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: aa0003f3 mov x19, x0 4: f2fbfff6 movk x22, #0xdfff, lsl #48 8: 97a8d6ee bl 0xfffffffffea35bc0 c: d343fe77 lsr x23, x19, #3 * 10: 38766ae8 ldrb w8, [x23, x22] <-- trapping instruction