------------[ cut here ]------------ WARNING: CPU: 0 PID: 24376 at drivers/net/netdevsim/fib.c:448 nsim_fib6_rt_nh_find drivers/net/netdevsim/fib.c:417 [inline] WARNING: CPU: 0 PID: 24376 at drivers/net/netdevsim/fib.c:448 nsim_fib6_rt_nh_del+0x154/0x290 drivers/net/netdevsim/fib.c:447 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 24376 Comm: syz-executor.0 Not tainted 5.8.0-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+0x1f0/0x31e lib/dump_stack.c:118 panic+0x264/0x7a0 kernel/panic.c:231 __warn+0x227/0x250 kernel/panic.c:600 report_bug+0x1b1/0x2e0 lib/bug.c:198 handle_bug+0x42/0x80 arch/x86/kernel/traps.c:235 exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:255 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536 RIP: 0010:nsim_fib6_rt_nh_del+0x154/0x290 drivers/net/netdevsim/fib.c:417 Code: 8a fc 4d 89 2c 24 4c 89 e8 48 c1 e8 03 80 3c 28 00 74 08 4c 89 ef e8 8b 01 8a fc 48 8b 04 24 49 89 45 00 eb 1b e8 ac 4f 4a fc <0f> 0b 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 96 4f 4a fc RSP: 0018:ffffc9000729f8f0 EFLAGS: 00010287 RAX: ffffffff852a8814 RBX: ffff8880a2e67138 RCX: 0000000000040000 RDX: ffffc90005de9000 RSI: 000000000000112c RDI: 000000000000112d RBP: dffffc0000000000 R08: ffffffff852a1f87 R09: fffffbfff131daa6 R10: fffffbfff131daa6 R11: 0000000000000000 R12: ffff88809f8f4800 R13: ffff8880a2e67138 R14: 1ffff1101234d97a R15: ffff888091a6cbd0 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+0x18b1/0x3680 drivers/net/netdevsim/fib.c:772 notifier_call_chain kernel/notifier.c:83 [inline] __atomic_notifier_call_chain+0x17f/0x2c0 kernel/notifier.c:173 call_fib_notifiers+0x2d/0x60 net/core/fib_notifier.c:35 fib6_del_route net/ipv6/ip6_fib.c:400 [inline] fib6_del+0xf24/0x1360 net/ipv6/ip6_fib.c:2018 __ip6_del_rt_siblings net/ipv6/route.c:3847 [inline] ip6_route_del+0x1ac9/0x2360 net/ipv6/route.c:3995 ipv6_route_ioctl+0x4a3/0x820 net/ipv6/route.c:4366 inet6_ioctl+0x168/0x1a0 net/ipv6/af_inet6.c:561 sock_do_ioctl+0x7b/0x260 net/socket.c:1047 sock_ioctl+0x4aa/0x690 net/socket.c:1198 vfs_ioctl fs/ioctl.c:48 [inline] ksys_ioctl fs/ioctl.c:753 [inline] __do_sys_ioctl fs/ioctl.c:762 [inline] __se_sys_ioctl+0xf9/0x160 fs/ioctl.c:760 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45ccd9 Code: 2d b6 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 fb b5 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f53b9330c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000001c7c0 RCX: 000000000045ccd9 RDX: 0000000020000440 RSI: 000000000000890c RDI: 0000000000000003 RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c R13: 00007ffc2d6dab8f R14: 00007f53b93319c0 R15: 000000000078bf0c Kernel Offset: disabled Rebooting in 86400 seconds..