------------[ cut here ]------------
WARNING: CPU: 0 PID: 10130 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: 10130 Comm: syz-executor.2 Not tainted 5.9.0-rc2-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+0x18f/0x20d lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:231
 __warn.cold+0x20/0x4a kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:nsim_fib6_rt_nh_del+0x267/0x330 drivers/net/netdevsim/fib.c:448
Code: e8 7e 7f 6a fc 85 db 74 32 e8 f5 82 6a fc 48 89 ef e8 6d 26 aa fc 5b 5d 41 5c 41 5d 41 5e 41 5f e9 de 82 6a fc e8 d9 82 6a fc <0f> 0b 5b 5d 41 5c 41 5d 41 5e 41 5f e9 c8 82 6a fc e8 c3 82 6a fc
RSP: 0018:ffffc9001531f5a0 EFLAGS: 00010206
RAX: 0000000000008410 RBX: dffffc0000000000 RCX: ffffc9000ca24000
RDX: 0000000000040000 RSI: ffffffff8509bc37 RDI: ffff8880988b1e00
RBP: ffff8880988b1e38 R08: 0000000000000001 R09: ffff8881a965ece0
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880a2936b10
R13: ffff8880a9208c00 R14: ffff8880988b1e38 R15: ffff8880988b1e00
 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+0x1230/0x2880 drivers/net/netdevsim/fib.c:772
 notifier_call_chain+0xb5/0x200 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 net/ipv6/ip6_fib.c:400 [inline]
 fib6_del_route net/ipv6/ip6_fib.c:1982 [inline]
 fib6_del+0xf7d/0x1630 net/ipv6/ip6_fib.c:2018
 __ip6_del_rt_siblings net/ipv6/route.c:3847 [inline]
 ip6_route_del+0x1527/0x1a60 net/ipv6/route.c:3995
 ipv6_route_ioctl+0x468/0x570 net/ipv6/route.c:4366
 inet6_ioctl+0x242/0x280 net/ipv6/af_inet6.c:561
 sock_do_ioctl+0xcb/0x2d0 net/socket.c:1047
 sock_ioctl+0x3b8/0x730 net/socket.c:1198
 vfs_ioctl fs/ioctl.c:48 [inline]
 __do_sys_ioctl fs/ioctl.c:753 [inline]
 __se_sys_ioctl fs/ioctl.c:739 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:739
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45d579
Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f42ada13c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000001e140 RCX: 000000000045d579
RDX: 0000000020000240 RSI: 000000000000890c RDI: 0000000000000003
RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
R13: 000000000169fb6f R14: 00007f42ada149c0 R15: 000000000118cf4c
Kernel Offset: disabled
Rebooting in 86400 seconds..