------------[ cut here ]------------ WARNING: CPU: 1 PID: 22348 at drivers/net/netdevsim/fib.c:448 nsim_fib6_rt_nh_del+0x267/0x330 drivers/net/netdevsim/fib.c:448 Modules linked in: CPU: 1 PID: 22348 Comm: syz-executor.3 Not tainted 5.10.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:nsim_fib6_rt_nh_del+0x267/0x330 drivers/net/netdevsim/fib.c:448 Code: e8 2e 4e 4c fc 85 db 74 32 e8 d5 55 4c fc 48 89 ef e8 6d 44 8d fc 5b 5d 41 5c 41 5d 41 5e 41 5f e9 be 55 4c fc e8 b9 55 4c fc <0f> 0b 5b 5d 41 5c 41 5d 41 5e 41 5f e9 a8 55 4c fc e8 a3 55 4c fc RSP: 0018:ffffc900026e75b0 EFLAGS: 00010216 RAX: 0000000000008582 RBX: dffffc0000000000 RCX: ffffc9000fb1c000 RDX: 0000000000040000 RSI: ffffffff8523aec7 RDI: ffff88801c0e2f00 RBP: ffff88801c0e2f38 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff888024995890 R13: ffff88801ce58a00 R14: ffff88801c0e2f38 R15: ffff88801c0e2f00 FS: 00007f23703ff700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004d0629 CR3: 000000001429b000 CR4: 0000000000350ee0 Call Trace: 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+0x8d/0x170 kernel/notifier.c:217 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:1986 [inline] fib6_del+0xf04/0x15b0 net/ipv6/ip6_fib.c:2027 __ip6_del_rt_siblings net/ipv6/route.c:3848 [inline] ip6_route_del+0x172a/0x1cc0 net/ipv6/route.c:3996 ipv6_route_ioctl+0x468/0x570 net/ipv6/route.c:4367 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: 0033:0x45deb9 Code: 0d 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f23703fec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000001e840 RCX: 000000000045deb9 RDX: 0000000020000140 RSI: 000000000000890c RDI: 0000000000000003 RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c R13: 00007ffc0aa5af0f R14: 00007f23703ff9c0 R15: 000000000118bf2c