IPVS: stopping backup sync thread 6966 ... Unable to handle kernel paging request at virtual address dfff800000000012 KASAN: null-ptr-deref in range [0x0000000000000090-0x0000000000000097] 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 [dfff800000000012] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 0 UID: 0 PID: 1561 Comm: kworker/u8:7 Not tainted 6.13.0-rc7-syzkaller-g1950a0af2d55 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: netns cleanup_net pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __fib6_drop_pcpu_from+0x1c0/0x3e8 net/ipv6/ip6_fib.c:980 lr : __fib6_drop_pcpu_from+0x158/0x3e8 net/ipv6/ip6_fib.c:966 sp : ffff80009f5e6920 x29: ffff80009f5e6920 x28: 1fffe00019d266a2 x27: dfff800000000000 x26: ffff0000ce933400 x25: 0000000000000093 x24: fffffdffbf732498 x23: 0000000000000000 x22: dfff800000000000 x21: 1ffff00011e5aa66 x20: ffff0000ce933510 x19: 0000000000000008 x18: 1ffff00013ebcdee x17: 0000000000040f9c x16: ffff80008069d0f0 x15: 0000000000000001 x14: 1ffff00011f340ca x13: dfff800000000000 x12: 000000005a9df1ca x11: 0000000074890eb5 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 0000000000000012 x7 : ffff80008a3e3d58 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000008 Call trace: __fib6_drop_pcpu_from+0x1c0/0x3e8 net/ipv6/ip6_fib.c:980 (P) fib6_drop_pcpu_from net/ipv6/ip6_fib.c:1024 [inline] fib6_purge_rt+0x208/0x7a4 net/ipv6/ip6_fib.c:1035 fib6_del_route net/ipv6/ip6_fib.c:1995 [inline] fib6_del+0xc0c/0x126c net/ipv6/ip6_fib.c:2040 fib6_clean_node+0x24c/0x4d0 net/ipv6/ip6_fib.c:2202 fib6_walk_continue+0x5b8/0x7e0 net/ipv6/ip6_fib.c:2124 fib6_walk+0x144/0x258 net/ipv6/ip6_fib.c:2172 fib6_clean_tree net/ipv6/ip6_fib.c:2252 [inline] __fib6_clean_all+0x29c/0x418 net/ipv6/ip6_fib.c:2268 fib6_clean_all+0x3c/0x50 net/ipv6/ip6_fib.c:2279 rt6_sync_down_dev net/ipv6/route.c:4908 [inline] rt6_disable_ip+0x130/0x718 net/ipv6/route.c:4913 addrconf_ifdown+0x154/0x17c8 net/ipv6/addrconf.c:3877 addrconf_notify+0x340/0xce8 notifier_call_chain+0x1c4/0x550 kernel/notifier.c:85 raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:453 call_netdevice_notifiers_info net/core/dev.c:2026 [inline] call_netdevice_notifiers_extack net/core/dev.c:2064 [inline] call_netdevice_notifiers net/core/dev.c:2078 [inline] dev_close_many+0x308/0x474 net/core/dev.c:1619 dev_close+0x174/0x250 net/core/dev.c:1641 cfg80211_shutdown_all_interfaces+0xc0/0x1d8 net/wireless/core.c:280 ieee80211_remove_interfaces+0x10c/0x5dc net/mac80211/iface.c:2280 ieee80211_unregister_hw+0x60/0x29c net/mac80211/main.c:1671 mac80211_hwsim_del_radio+0x220/0x3e4 drivers/net/wireless/virtual/mac80211_hwsim.c:5625 hwsim_exit_net+0x51c/0x5ec drivers/net/wireless/virtual/mac80211_hwsim.c:6505 ops_exit_list net/core/net_namespace.c:172 [inline] cleanup_net+0x640/0xa34 net/core/net_namespace.c:648 process_one_work+0x7a8/0x15cc kernel/workqueue.c:3236 process_scheduled_works kernel/workqueue.c:3317 [inline] worker_thread+0x97c/0xeec kernel/workqueue.c:3398 kthread+0x288/0x310 kernel/kthread.c:389 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862 Code: f9400308 b4000188 91024119 d343ff28 (387b6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: f9400308 ldr x8, [x24] 4: b4000188 cbz x8, 0x34 8: 91024119 add x25, x8, #0x90 c: d343ff28 lsr x8, x25, #3 * 10: 387b6908 ldrb w8, [x8, x27] <-- trapping instruction