------------[ cut here ]------------ WARNING: CPU: 0 PID: 30148 at drivers/net/netdevsim/fib.c:448 nsim_fib6_rt_nh_del+0x267/0x330 drivers/net/netdevsim/fib.c:448 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 30148 Comm: syz-executor.4 Not tainted 5.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:221 __warn.cold+0x2f/0x35 kernel/panic.c:582 report_bug+0x27b/0x2f0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:105 [inline] fixup_bug arch/x86/kernel/traps.c:100 [inline] do_error_trap+0x12b/0x220 arch/x86/kernel/traps.c:197 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:216 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:nsim_fib6_rt_nh_del+0x267/0x330 drivers/net/netdevsim/fib.c:448 Code: e8 ee 69 73 fc 85 db 74 32 e8 45 68 73 fc 48 89 ef e8 7d 31 b2 fc 5b 5d 41 5c 41 5d 41 5e 41 5f e9 2e 68 73 fc e8 29 68 73 fc <0f> 0b 5b 5d 41 5c 41 5d 41 5e 41 5f e9 18 68 73 fc e8 13 68 73 fc RSP: 0018:ffffc90005456478 EFLAGS: 00010246 RAX: 0000000000040000 RBX: dffffc0000000000 RCX: ffffc900120a6000 RDX: 0000000000040000 RSI: ffffffff85006697 RDI: ffff888096719380 RBP: ffff8880967193b8 R08: ffff888087e86380 R09: fffffbfff1516d79 R10: ffffc900054564b0 R11: fffffbfff1516d78 R12: ffff88809f1eb910 R13: ffff8880959a4c00 R14: ffff8880967193b8 R15: ffff888096719380 nsim_fib6_rt_remove drivers/net/netdevsim/fib.c:688 [inline] nsim_fib6_event drivers/net/netdevsim/fib.c:725 [inline] nsim_fib_event drivers/net/netdevsim/fib.c:744 [inline] nsim_fib_event_nb+0x14bb/0x24e0 drivers/net/netdevsim/fib.c:772 notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 __atomic_notifier_call_chain+0x95/0x180 kernel/notifier.c:173 call_fib_notifiers+0x166/0x290 net/core/fib_notifier.c:35 call_fib6_entry_notifiers+0xfb/0x150 net/ipv6/ip6_fib.c:399 fib6_del_route net/ipv6/ip6_fib.c:1981 [inline] fib6_del+0xe63/0x14c0 net/ipv6/ip6_fib.c:2017 fib6_clean_node+0x39b/0x570 net/ipv6/ip6_fib.c:2179 fib6_walk_continue+0x4aa/0x8e0 net/ipv6/ip6_fib.c:2101 fib6_walk+0x91/0xf0 net/ipv6/ip6_fib.c:2149 fib6_clean_tree+0xdb/0x120 net/ipv6/ip6_fib.c:2229 __fib6_clean_all+0x118/0x2a0 net/ipv6/ip6_fib.c:2245 rt6_sync_down_dev+0x12a/0x150 net/ipv6/route.c:4775 rt6_disable_ip+0x24/0x460 net/ipv6/route.c:4780 addrconf_ifdown+0x9d/0x12f0 net/ipv6/addrconf.c:3677 addrconf_notify+0x5a6/0x2250 net/ipv6/addrconf.c:3602 notifier_call_chain+0xc0/0x230 kernel/notifier.c:83 call_netdevice_notifiers_info net/core/dev.c:2016 [inline] call_netdevice_notifiers_info+0xb5/0x130 net/core/dev.c:2001 call_netdevice_notifiers_extack net/core/dev.c:2028 [inline] call_netdevice_notifiers net/core/dev.c:2042 [inline] __dev_notify_flags+0x1e9/0x2c0 net/core/dev.c:8305 dev_change_flags+0x100/0x160 net/core/dev.c:8341 do_setlink+0xa1c/0x3680 net/core/rtnetlink.c:2605 rtnl_group_changelink net/core/rtnetlink.c:3124 [inline] __rtnl_newlink+0xc94/0x1590 net/core/rtnetlink.c:3278 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3398 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5461 netlink_rcv_skb+0x15a/0x430 net/netlink/af_netlink.c:2469 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] netlink_unicast+0x537/0x740 net/netlink/af_netlink.c:1329 netlink_sendmsg+0x882/0xe10 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 ____sys_sendmsg+0x6e6/0x810 net/socket.c:2352 ___sys_sendmsg+0x100/0x170 net/socket.c:2406 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2439 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline] do_fast_syscall_32+0x270/0xe90 arch/x86/entry/common.c:396 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139 Kernel Offset: disabled Rebooting in 86400 seconds..