------------[ cut here ]------------
WARNING: CPU: 0 PID: 31327 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: 31327 Comm: syz-executor.3 Not tainted 5.7.0-rc3-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:175 [inline]
 fixup_bug arch/x86/kernel/traps.c:170 [inline]
 do_error_trap+0x12b/0x220 arch/x86/kernel/traps.c:267
 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286
 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 1e 09 7a fc 85 db 74 32 e8 a5 07 7a fc 48 89 ef e8 bd 86 b7 fc 5b 5d 41 5c 41 5d 41 5e 41 5f e9 8e 07 7a fc e8 89 07 7a fc <0f> 0b 5b 5d 41 5c 41 5d 41 5e 41 5f e9 78 07 7a fc e8 73 07 7a fc
RSP: 0018:ffffc9000838f3e8 EFLAGS: 00010216
RAX: 0000000000040000 RBX: dffffc0000000000 RCX: ffffc900102d6000
RDX: 0000000000008b94 RSI: ffffffff84f92717 RDI: ffff8880a9748700
RBP: ffff8880a9748738 R08: ffff888041e924c0 R09: fffffbfff1512999
R10: ffffc9000838f420 R11: fffffbfff1512998 R12: ffff8880a2506090
R13: ffff8880a790b800 R14: ffff8880a9748738 R15: ffff8880a9748700
 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
 __ip6_del_rt_siblings net/ipv6/route.c:3805 [inline]
 ip6_route_del+0xf98/0x13b0 net/ipv6/route.c:3953
 ipv6_route_ioctl+0x326/0x360 net/ipv6/route.c:4330
 inet6_ioctl+0x16c/0x1b0 net/ipv6/af_inet6.c:550
 sock_do_ioctl+0xd8/0x2f0 net/socket.c:1053
 routing_ioctl+0x350/0x5f0 net/socket.c:3460
 compat_sock_ioctl_trans net/socket.c:3507 [inline]
 compat_sock_ioctl+0x13dc/0x2250 net/socket.c:3607
 __do_compat_sys_ioctl fs/ioctl.c:857 [inline]
 __se_compat_sys_ioctl fs/ioctl.c:808 [inline]
 __ia32_compat_sys_ioctl+0x23d/0x2b0 fs/ioctl.c:808
 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..