bond0: (slave dummy0): Releasing backup interface
dummy0: left allmulticast mode
Oops: general protection fault, probably for non-canonical address 0xdffffc001fffe000: 0000 [#1] SMP KASAN PTI
KASAN: probably user-memory-access in range [0x00000000ffff0000-0x00000000ffff0007]
CPU: 0 UID: 0 PID: 15770 Comm: syz.2.2768 Not tainted 6.17.0-rc1-syzkaller-00127-g715c7a36d59f #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:fib_table_flush+0x29f/0x11a0 net/ipv4/fib_trie.c:2038
Code: 44 89 e7 44 89 f6 e8 b0 7d b7 f7 45 38 f4 76 6e e8 26 7d b7 f7 48 89 df e8 be d1 ff ff eb 64 4d 8d 75 05 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 28 0d 00 00 45 0f b6 36 31 ff 44 89 f6
RSP: 0018:ffffc9001c9ee500 EFLAGS: 00010207
RAX: 000000001fffe000 RBX: ffff8880579b5c20 RCX: 0000000000080000
RDX: ffffc9000da72000 RSI: 00000000000267e9 RDI: 00000000000267ea
RBP: ffffc9001c9ee6d8 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: dffffc0000000000
R13: 00000000ffff0000 R14: 00000000ffff0005 R15: 0000000000000001
FS: 00007f28c4a946c0(0000) GS:ffff888125c1c000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2d64b1 CR3: 0000000074606000 CR4: 00000000003526f0
Call Trace:
<TASK>
fib_flush net/ipv4/fib_frontend.c:195 [inline]
fib_disable_ip+0xfd/0x170 net/ipv4/fib_frontend.c:1455
fib_netdev_event+0x318/0x490 net/ipv4/fib_frontend.c:-1
notifier_call_chain+0x1b6/0x3e0 kernel/notifier.c:85
call_netdevice_notifiers_extack net/core/dev.c:2267 [inline]
call_netdevice_notifiers net/core/dev.c:2281 [inline]
netif_close_many+0x29c/0x410 net/core/dev.c:1784
netif_close+0x158/0x210 net/core/dev.c:1797
dev_close+0x10a/0x220 net/core/dev_api.c:220
__bond_release_one+0xbb5/0x10e0 drivers/net/bonding/bond_main.c:2657
do_set_master+0x312/0x6d0 net/core/rtnetlink.c:2932
do_setlink+0xcf0/0x41c0 net/core/rtnetlink.c:3150
rtnl_group_changelink net/core/rtnetlink.c:3775 [inline]
__rtnl_newlink net/core/rtnetlink.c:3929 [inline]
rtnl_newlink+0x149f/0x1c70 net/core/rtnetlink.c:4057
rtnetlink_rcv_msg+0x7cc/0xb70 net/core/rtnetlink.c:6946
netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552
netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
netlink_unicast+0x82c/0x9e0 net/netlink/af_netlink.c:1346
netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896
sock_sendmsg_nosec net/socket.c:714 [inline]
__sock_sendmsg+0x219/0x270 net/socket.c:729
____sys_sendmsg+0x505/0x830 net/socket.c:2614
___sys_sendmsg+0x21f/0x2a0 net/socket.c:2668
__sys_sendmsg net/socket.c:2700 [inline]
__do_sys_sendmsg net/socket.c:2705 [inline]
__se_sys_sendmsg net/socket.c:2703 [inline]
__x64_sys_sendmsg+0x19b/0x260 net/socket.c:2703
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f28c3b8ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f28c4a94038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f28c3db6090 RCX: 00007f28c3b8ebe9
RDX: 0000000000000000 RSI: 0000200000000280 RDI: 0000000000000003
RBP: 00007f28c3c11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f28c3db6128 R14: 00007f28c3db6090 R15: 00007ffdbf845928
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:fib_table_flush+0x29f/0x11a0 net/ipv4/fib_trie.c:2038
Code: 44 89 e7 44 89 f6 e8 b0 7d b7 f7 45 38 f4 76 6e e8 26 7d b7 f7 48 89 df e8 be d1 ff ff eb 64 4d 8d 75 05 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 0f 85 28 0d 00 00 45 0f b6 36 31 ff 44 89 f6
RSP: 0018:ffffc9001c9ee500 EFLAGS: 00010207
RAX: 000000001fffe000 RBX: ffff8880579b5c20 RCX: 0000000000080000
RDX: ffffc9000da72000 RSI: 00000000000267e9 RDI: 00000000000267ea
RBP: ffffc9001c9ee6d8 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: dffffc0000000000
R13: 00000000ffff0000 R14: 00000000ffff0005 R15: 0000000000000001
FS: 00007f28c4a946c0(0000) GS:ffff888125d1c000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c24bd5e CR3: 0000000074606000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
0: 44 89 e7 mov %r12d,%edi
3: 44 89 f6 mov %r14d,%esi
6: e8 b0 7d b7 f7 call 0xf7b77dbb
b: 45 38 f4 cmp %r14b,%r12b
e: 76 6e jbe 0x7e
10: e8 26 7d b7 f7 call 0xf7b77d3b
15: 48 89 df mov %rbx,%rdi
18: e8 be d1 ff ff call 0xffffd1db
1d: eb 64 jmp 0x83
1f: 4d 8d 75 05 lea 0x5(%r13),%r14
23: 4c 89 f0 mov %r14,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 28 0d 00 00 jne 0xd5f
37: 45 0f b6 36 movzbl (%r14),%r14d
3b: 31 ff xor %edi,%edi
3d: 44 89 f6 mov %r14d,%esi