Warning: Permanently added '10.128.0.253' (ED25519) to the list of known hosts.
[+] Starting reproducer...
[+] Using interface index: 2
[+] Thread 1 created.
[+] Thread 2 created.
[+] Thread 3 created.
[+] Thread 4 created.
[ 91.547084][ T5940] IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE
[ 91.547099][ T5940] IPv6: NLM_F_CREATE should be set when creating new route
[ 91.547166][ T5940] IPv6: NLM_F_CREATE should be set when creating new route
[ 91.550597][ T5940] IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE
[ 91.550607][ T5940] IPv6: NLM_F_CREATE should be set when creating new route
[ 91.550619][ T5940] IPv6: NLM_F_CREATE should be set when creating new route
[ 91.551319][ T5940] IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE
[ 91.551623][ T5940] IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE
[ 91.551862][ T5940] IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE
[ 91.619370][ T5940] IPv6: RTM_NEWROUTE with no NLM_F_CREATE or NLM_F_REPLACE
[ 91.619386][ T5940] IPv6: NLM
** replaying previous printk message **
[ 91.619386][ T5940] IPv6: NLM_F_CREATE should be set when creating new route
[ 91.619405][ T5940] IPv6: NLM_F_CREATE should be set when creating new route
[ 91.634339][ T5940] ------------[ cut here ]------------
[ 91.634351][ T5940] i != fen6_info->nsiblings
[ 91.634362][ T5940] WARNING: drivers/net/netdevsim/fib.c:831 at nsim_fib_event_nb+0xbcc/0xe50, CPU#1: syz-executor446/5940
[ 91.676735][ T5940] Modules linked in:
[ 91.681096][ T5940] CPU: 1 UID: 0 PID: 5940 Comm: syz-executor446 Not tainted syzkaller #0 PREEMPT(full)
[ 91.691357][ T5940] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
[ 91.701988][ T5940] RIP: 0010:nsim_fib_event_nb+0xbcc/0xe50
[ 91.708191][ T5940] Code: 20 4c 8b 64 24 28 e8 e3 25 8f fa e8 de 25 8f fa 44 89 ee 44 89 ff e8 83 1f 8f fa 45 39 fd 0f 84 67 fd ff ff e8 c5 25 8f fa 90 <0f> 0b 90 e9 59 fd ff ff e8 b7 25 8f fa 48 c7 c7 c0 f5 c4 8c e8 cb
[ 91.729039][ T5940] RSP: 0018:ffffc900033df388 EFLAGS: 00010293
[ 91.735693][ T5940] RAX: 0000000000000000 RBX: ffffc900033df4d0 RCX: 0000000000000000
[ 91.744750][ T5940] RDX: ffff88802f668000 RSI: ffffffff877d30cb RDI: ffff88802e305418
[ 91.753182][ T5940] RBP: ffff88802e30542c R08: 0000000000000005 R09: 0000000000000000
[ 91.761160][ T5940] R10: 0000000000000001 R11: 0000000000000001 R12: ffff88802528b000
[ 91.770217][ T5940] R13: 0000000000000001 R14: ffff888024695480 R15: ffff88802e305400
[ 91.778678][ T5940] FS: 00007fd00e2266c0(0000) GS:ffff888122a46000(0000) knlGS:0000000000000000
[ 91.788457][ T5940] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 91.795511][ T5940] CR2: 00007fd00d224d58 CR3: 000000007594e000 CR4: 00000000003526f0
[ 91.803938][ T5940] Call Trace:
[ 91.807561][ T5940]
[ 91.810932][ T5940] notifier_call_chain+0x99/0x3f0
[ 91.816439][ T5940] atomic_notifier_call_chain+0x71/0x1c0
[ 91.822082][ T5940] call_fib_notifiers+0x33/0x70
[ 91.828043][ T5940] call_fib6_multipath_entry_notifiers+0x112/0x170
[ 91.835017][ T5940] ? __pfx_call_fib6_multipath_entry_notifiers+0x10/0x10
[ 91.842048][ T5940] ? find_held_lock+0x2b/0x80
[ 91.847137][ T5940] ? ip6_route_multipath_add+0x11e2/0x1ba0
[ 91.853091][ T5940] ? ip6_route_multipath_add+0x11e2/0x1ba0
[ 91.858907][ T5940] ip6_route_multipath_add+0x128f/0x1ba0
[ 91.865275][ T5940] ? __lock_acquire+0x5c0/0x1f40
[ 91.870231][ T5940] ? __pfx_ip6_route_multipath_add+0x10/0x10
[ 91.876282][ T5940] ? avc_has_perm_noaudit+0x11e/0x470
[ 91.881671][ T5940] ? inet6_rtm_newroute+0xf5/0x160
[ 91.886869][ T5940] inet6_rtm_newroute+0xf5/0x160
[ 91.891823][ T5940] ? __pfx_inet6_rtm_newroute+0x10/0x10
[ 91.897441][ T5940] ? __lock_acquire+0x5c0/0x1f40
[ 91.902428][ T5940] ? find_held_lock+0x2b/0x80
[ 91.907114][ T5940] ? rtnetlink_rcv_msg+0x93a/0xe90
[ 91.912265][ T5940] ? rtnetlink_rcv_msg+0x93a/0xe90
[ 91.917378][ T5940] ? __pfx_inet6_rtm_newroute+0x10/0x10
[ 91.922983][ T5940] rtnetlink_rcv_msg+0x95e/0xe90
[ 91.927940][ T5940] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 91.933461][ T5940] ? __lock_acquire+0x5c0/0x1f40
[ 91.938412][ T5940] ? __netlink_lookup+0xa9/0x900
[ 91.943400][ T5940] netlink_rcv_skb+0x159/0x420
[ 91.948174][ T5940] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 91.953685][ T5940] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 91.958993][ T5940] ? netlink_deliver_tap+0x1ae/0xcc0
[ 91.964356][ T5940] netlink_unicast+0x585/0x850
[ 91.969136][ T5940] ? __pfx_netlink_unicast+0x10/0x10
[ 91.974484][ T5940] ? __pfx_sock_has_perm+0x10/0x10
[ 91.979605][ T5940] netlink_sendmsg+0x8b0/0xda0
[ 91.984443][ T5940] ? __pfx_netlink_sendmsg+0x10/0x10
[ 91.989744][ T5940] ? selinux_socket_sendmsg+0x198/0x2f0
[ 91.995386][ T5940] __sys_sendto+0x48b/0x4e0
[ 91.999899][ T5940] ? __pfx_netlink_sendmsg+0x10/0x10
[ 92.005256][ T5940] ? __pfx___sys_sendto+0x10/0x10
[ 92.010297][ T5940] ? fd_install+0x223/0x580
[ 92.014874][ T5940] ? xfd_validate_state+0x129/0x190
[ 92.020106][ T5940] __x64_sys_sendto+0xe0/0x1c0
[ 92.024907][ T5940] ? do_syscall_64+0xae/0x790
[ 92.029593][ T5940] ? lockdep_hardirqs_on+0x7d/0x110
[ 92.034827][ T5940] do_syscall_64+0x123/0x790
[ 92.039430][ T5940] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 92.045359][ T5940] RIP: 0033:0x7fd00ea7f65e
[ 92.049783][ T5940] Code: 08 0f 85 f5 e2 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 90 41 57 41 56 4d 89 c6 41 55 4d 89 cd 41 54 55 53 48 83 ec 08
[ 92.069464][ T5940] RSP: 002b:00007fd00e225b08 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[ 92.077924][ T5940] RAX: ffffffffffffffda RBX: 00007fd00e2266c0 RCX: 00007fd00ea7f65e
[ 92.085933][ T5940] RDX: 000000000000006c RSI: 00007fd00e225dc0 RDI: 0000000000000004
[ 92.093947][ T5940] RBP: 0000000000050014 R08: 00007fd00e225b84 R09: 000000000000000c
[ 92.101928][ T5940] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
[ 92.110312][ T5940] R13: 00007fd00e225bc0 R14: 00007fd00e225df4 R15: 000000000000400a
[ 92.118359][ T5940]
[ 92.121379][ T5940] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 92.128656][ T5940] CPU: 1 UID: 0 PID: 5940 Comm: syz-executor446 Not tainted syzkaller #0 PREEMPT(full)
[ 92.138371][ T5940] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
[ 92.148431][ T5940] Call Trace:
[ 92.151716][ T5940]
[ 92.154643][ T5940] dump_stack_lvl+0x100/0x190
[ 92.159339][ T5940] vpanic+0x553/0x970
[ 92.163328][ T5940] ? __pfx_vpanic+0x10/0x10
[ 92.167843][ T5940] panic+0xd1/0xe0
[ 92.171572][ T5940] ? __pfx_panic+0x10/0x10
[ 92.176012][ T5940] check_panic_on_warn.cold+0x19/0x34
[ 92.181388][ T5940] ? nsim_fib_event_nb+0xbcc/0xe50
[ 92.186510][ T5940] __warn.cold+0x191/0x318
[ 92.190937][ T5940] __report_bug+0x30f/0x440
[ 92.195447][ T5940] ? nsim_fib_event_nb+0xbcc/0xe50
[ 92.200571][ T5940] ? __pfx___report_bug+0x10/0x10
[ 92.205622][ T5940] ? nsim_fib_event_nb+0xbcc/0xe50
[ 92.210740][ T5940] report_bug+0xb3/0x220
[ 92.214988][ T5940] ? nsim_fib_event_nb+0xbcc/0xe50
[ 92.220105][ T5940] handle_bug+0x16a/0x2a0
[ 92.224443][ T5940] exc_invalid_op+0x17/0x50
[ 92.228952][ T5940] asm_exc_invalid_op+0x1a/0x20
[ 92.233790][ T5940] RIP: 0010:nsim_fib_event_nb+0xbcc/0xe50
[ 92.239524][ T5940] Code: 20 4c 8b 64 24 28 e8 e3 25 8f fa e8 de 25 8f fa 44 89 ee 44 89 ff e8 83 1f 8f fa 45 39 fd 0f 84 67 fd ff ff e8 c5 25 8f fa 90 <0f> 0b 90 e9 59 fd ff ff e8 b7 25 8f fa 48 c7 c7 c0 f5 c4 8c e8 cb
[ 92.259129][ T5940] RSP: 0018:ffffc900033df388 EFLAGS: 00010293
[ 92.265189][ T5940] RAX: 0000000000000000 RBX: ffffc900033df4d0 RCX: 0000000000000000
[ 92.273159][ T5940] RDX: ffff88802f668000 RSI: ffffffff877d30cb RDI: ffff88802e305418
[ 92.281127][ T5940] RBP: ffff88802e30542c R08: 0000000000000005 R09: 0000000000000000
[ 92.289096][ T5940] R10: 0000000000000001 R11: 0000000000000001 R12: ffff88802528b000
[ 92.297066][ T5940] R13: 0000000000000001 R14: ffff888024695480 R15: ffff88802e305400
[ 92.305042][ T5940] ? nsim_fib_event_nb+0xbcb/0xe50
[ 92.310164][ T5940] ? nsim_fib_event_nb+0xbcb/0xe50
[ 92.315296][ T5940] notifier_call_chain+0x99/0x3f0
[ 92.320337][ T5940] atomic_notifier_call_chain+0x71/0x1c0
[ 92.325979][ T5940] call_fib_notifiers+0x33/0x70
[ 92.330839][ T5940] call_fib6_multipath_entry_notifiers+0x112/0x170
[ 92.337349][ T5940] ? __pfx_call_fib6_multipath_entry_notifiers+0x10/0x10
[ 92.344375][ T5940] ? find_held_lock+0x2b/0x80
[ 92.349062][ T5940] ? ip6_route_multipath_add+0x11e2/0x1ba0
[ 92.354875][ T5940] ? ip6_route_multipath_add+0x11e2/0x1ba0
[ 92.360698][ T5940] ip6_route_multipath_add+0x128f/0x1ba0
[ 92.366353][ T5940] ? __lock_acquire+0x5c0/0x1f40
[ 92.371306][ T5940] ? __pfx_ip6_route_multipath_add+0x10/0x10
[ 92.377321][ T5940] ? avc_has_perm_noaudit+0x11e/0x470
[ 92.382713][ T5940] ? inet6_rtm_newroute+0xf5/0x160
[ 92.387831][ T5940] inet6_rtm_newroute+0xf5/0x160
[ 92.392803][ T5940] ? __pfx_inet6_rtm_newroute+0x10/0x10
[ 92.398354][ T5940] ? __lock_acquire+0x5c0/0x1f40
[ 92.403309][ T5940] ? find_held_lock+0x2b/0x80
[ 92.407997][ T5940] ? rtnetlink_rcv_msg+0x93a/0xe90
[ 92.413111][ T5940] ? rtnetlink_rcv_msg+0x93a/0xe90
[ 92.418225][ T5940] ? __pfx_inet6_rtm_newroute+0x10/0x10
[ 92.423783][ T5940] rtnetlink_rcv_msg+0x95e/0xe90
[ 92.428731][ T5940] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 92.434207][ T5940] ? __lock_acquire+0x5c0/0x1f40
[ 92.439155][ T5940] ? __netlink_lookup+0xa9/0x900
[ 92.444099][ T5940] netlink_rcv_skb+0x159/0x420
[ 92.448867][ T5940] ? __pfx_rtnetlink_rcv_msg+0x10/0x10
[ 92.454340][ T5940] ? __pfx_netlink_rcv_skb+0x10/0x10
[ 92.459654][ T5940] ? netlink_deliver_tap+0x1ae/0xcc0
[ 92.464954][ T5940] netlink_unicast+0x585/0x850
[ 92.469736][ T5940] ? __pfx_netlink_unicast+0x10/0x10
[ 92.475036][ T5940] ? __pfx_sock_has_perm+0x10/0x10
[ 92.480156][ T5940] netlink_sendmsg+0x8b0/0xda0
[ 92.485011][ T5940] ? __pfx_netlink_sendmsg+0x10/0x10
[ 92.490307][ T5940] ? selinux_socket_sendmsg+0x198/0x2f0
[ 92.495864][ T5940] __sys_sendto+0x48b/0x4e0
[ 92.500372][ T5940] ? __pfx_netlink_sendmsg+0x10/0x10
[ 92.505672][ T5940] ? __pfx___sys_sendto+0x10/0x10
[ 92.510710][ T5940] ? fd_install+0x223/0x580
[ 92.515228][ T5940] ? xfd_validate_state+0x129/0x190
[ 92.520423][ T5940] __x64_sys_sendto+0xe0/0x1c0
[ 92.525194][ T5940] ? do_syscall_64+0xae/0x790
[ 92.529874][ T5940] ? lockdep_hardirqs_on+0x7d/0x110
[ 92.535074][ T5940] do_syscall_64+0x123/0x790
[ 92.539674][ T5940] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 92.545564][ T5940] RIP: 0033:0x7fd00ea7f65e
[ 92.549967][ T5940] Code: 08 0f 85 f5 e2 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 90 41 57 41 56 4d 89 c6 41 55 4d 89 cd 41 54 55 53 48 83 ec 08
[ 92.569562][ T5940] RSP: 002b:00007fd00e225b08 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[ 92.577979][ T5940] RAX: ffffffffffffffda RBX: 00007fd00e2266c0 RCX: 00007fd00ea7f65e
[ 92.585940][ T5940] RDX: 000000000000006c RSI: 00007fd00e225dc0 RDI: 0000000000000004
[ 92.594001][ T5940] RBP: 0000000000050014 R08: 00007fd00e225b84 R09: 000000000000000c
[ 92.601962][ T5940] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
[ 92.609932][ T5940] R13: 00007fd00e225bc0 R14: 00007fd00e225df4 R15: 000000000000400a
[ 92.618002][ T5940]
[ 92.621278][ T5940] Kernel Offset: disabled
[ 92.625591][ T5940] Rebooting in 86400 seconds..